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.. ==================================================
.. Header hierachy
.. ==
..  --
..   ^^
..    ''
..     ;;
..      ,,
..
.. --------------------------------------------------
.. External Links: `Bootstrap <http://getbootstrap.com/>`_:
.. Add Images: https://wiki.typo3.org/ReST_Syntax#Images
..
.. -*- coding: utf-8 -*- with BOM.


.. include:: Includes.txt


.. _installation:

Installation
============

Preparation
-----------

Report & Form
^^^^^^^^^^^^^

In PHP 5.x the QFQ extension needs  the PHP MySQL native driver. The following functions are used and are only available with the
native driver (see also: http://dev.mysql.com/downloads/connector/php-mysqlnd/):

* mysqli::get_result (important),
* mysqli::fetch_all (nice to use)

To normalize UTF8 input, the *php5-intl* resp. *php7.0-intl* package is needed by

* normalizer::normalize()

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For the `download`_ function, the program `pdftk` is necessary to concatenate PDF files.

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Preparation for Ubuntu 14.04::

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	sudo apt-get install php5-mysqlnd php5-intl pdftk
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	sudo php5enmod mysqlnd
	sudo service apache2 restart

Preparation steps for Ubuntu 16.04::

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	sudo apt install php7.0-intl
	sudo apt install pdftk libxrender1        # for PDF and 'HTML to PDF' (wkhtmltopdf)
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.. _wkhtmltopdf:

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wkhtmltopdf
^^^^^^^^^^^
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`wkhtmltopdf`  `<http://wkhtmltopdf.org/>`_ will be used by QFQ to offer 'website print' and 'HTML to PDF' conversion.
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The converter is not included in QFQ and has to be manually installed.
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* The Ubuntu package `wkhtmltopdf` needs a running Xserver - this does not work on a headless webserver. Best is to
   install the QT version from the named website above.
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In `config-qfq-ini`_ specify the:
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* installed `wkhtmltopdf` binary,
* the site base URL.

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**Important**: To access FE_GROUP protected pages or content, it's necessary to set in the Typo3 Installtool: ::

   [FE][lockIP] = 0

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HTML to PDF conversion
''''''''''''''''''''''

`wkhtmltopdf` converts a website (local or remote) to a (multi)-page PDF file. It's mainly used in `download`_.

Print
'''''

Different browser prints the same page in different variations. To prevent this, QFQ implements a small PHP wrapper
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`print.php` with uses `wkhtmltopdf` to convert HTML to PDF.
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Provide a `print this page`-link (replace {current pageId})::

	<a href="typo3conf/ext/qfq/qfq/api/print.php?id={current pageId}">Print this page</a>

Any parameter specified after `print.php` will be delivered to `wkhtmltopdf` as part of the URL.

Typoscript code to implement a print link on every page::

	10 = TEXT
	10 {
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		wrap = <a href="typo3conf/ext/qfq/qfq/api/print.php?id=...|&type=2"><span class="glyphicon glyphicon-print" aria-hidden="true"></span> Printview</a>
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		data = page:uid
	}

Setup
-----

* Install the extension via the Extensionmanager.

  * If you install the extension by manual download/upload and get an error message
    "can't activate extension": rename the downloaded zip file to `qfq.zip` or `qfq_<version>.zip` (e.g. version: 0.9.1).

  * If the Extensionmanager stops after importing: check your memory limit in php.ini.

* Enable the online local-documentation_.
* Copy/rename the file *<Documentroot>/typo3conf/ext/<ext_dir>/config.example.qfq.ini* to
  *<Documentroot>/typo3conf/config.qfq.ini* and configure the necessary values: `config.qfq.ini`_
  The configuration file is outside the extension directory to not loose it during updates.
* Play the SQL File *<ext_dir>/qfq/sql/formEditor.sql* to fill the database with the *FormEditor* records.
* Configure Typoscript to include Bootstrap, jQuery, QFQ javascript and CSS files.

::

	page.meta {
	  X-UA-Compatible = IE=edge
	  X-UA-Compatible.attribute = http-equiv
	  viewport=width=device-width, initial-scale=1
	}

	page.includeCSS {

		file1 = typo3conf/ext/qfq/Resources/Public/Css/bootstrap.min.css
		file2 = typo3conf/ext/qfq/Resources/Public/Css/bootstrap-theme.min.css
		file3 = typo3conf/ext/qfq/Resources/Public/Css/jqx.base.css
		file4 = typo3conf/ext/qfq/Resources/Public/Css/jqx.bootstrap.css
		file5 = typo3conf/ext/qfq/Resources/Public/Css/qfq-bs.css
	}

	page.includeJS {

		file1 = typo3conf/ext/qfq/Resources/Public/JavaScript/jquery.min.js
		file2 = typo3conf/ext/qfq/Resources/Public/JavaScript/bootstrap.min.js
		file3 = typo3conf/ext/qfq/Resources/Public/JavaScript/validator.min.js
		file4 = typo3conf/ext/qfq/Resources/Public/JavaScript/jqx-all.js
		file5 = typo3conf/ext/qfq/Resources/Public/JavaScript/globalize.js
		file6 = typo3conf/ext/qfq/Resources/Public/JavaScript/tinymce.min.js
		file7 = typo3conf/ext/qfq/Resources/Public/JavaScript/EventEmitter.min.js
		file8 = typo3conf/ext/qfq/Resources/Public/JavaScript/qfq.min.js
	}

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.. _form-editor:
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FormEditor
----------
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Setup a *report* to manage all *forms*:

* Create a Typo3 page.
* Set the 'URL Alias' to `form` (default) or the individual defined value in parameter EDIT_FORM_PAGE (config.qfq.ini).
* Insert a content record of type *qfq*.
* In the bodytext insert the following code:
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::

	# If there is a form given by SIP: show
	form={{form:S}}

	10 {
		# List of Forms: Do not show this list of forms if there is a form given by SIP.
		# Table header.
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		sql = SELECT CONCAT('{{pageId:T}}&form=Form&') as _Pagen, '#', 'Name', 'Title', 'Table', '' FROM (SELECT 1) AS fake WHERE  '{{form:SE}}'=''
		head = <table class="table table-hover qfq-table-50">
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		tail = </table>
		rbeg = <thead><tr>
		rend = </tr></thead>
		fbeg = <th>
		fend = </th>

		10 {
			# All forms
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			sql = SELECT CONCAT('{{pageId:T}}&form=Form&r=', f.id) as _Pagee, f.id, f.name, f.title, f.tableName, CONCAT('form=Form&r=', f.id) as _Paged FROM Form AS f  ORDER BY f.name
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			rbeg = <tr>
			rend = </tr>
			fbeg = <td>
			fend = </td>
		}
	}

.. _config-qfq-ini:

config.qfq.ini
--------------

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+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| Keyword                     | Example                                         | Description                                                                |
+=============================+=================================================+============================================================================+
| DB_USER                     | DB_USER=qfqUser                                 | Credentials configured in MySQL                                            |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| DB_PASSWORD                 | DB_PASSWORD=12345678                            | Credentials configured in MySQL                                            |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| DB_SERVER                   | DB_SERVER=localhost                             | Hostname of MySQL Server                                                   |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| DB_NAME                     | DB_NAME=qfq_db                                  | Database name                                                              |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| DB_NAME_TEST                | DB_NAME_TEST=qfq_db_test                        | Used during development of QFQ                                             |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| DB_INIT                     | DB_INIT=set names utf8                          | Global init for using the database.                                        |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| SQL_LOG                     | SQL_LOG=sql.log                                 | Filename to log SQL commands: relative to <ext_dir> or absolute.           |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| SQL_LOG_MODE                | SQL_LOG_MODE=modify                             | *all*: every statement will be logged - this is a lot                      |
|                             |                                                 | *modify*: log only statements who change data                              |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| SHOW_DEBUG_INFO             | SHOW_DEBUG_INFO=auto                            | Possible values: auto|yes|no. For 'auto': If a BE User is logged in,       |
|                             |                                                 | debug information will be shown on the fronend.                            |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| CSS_LINK_CLASS_INTERNA    L | CSS_LINK_CLASS_INTERNAL=internal                | CSS class name of links which points to internal tagets                    |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| CSS_LINK_CLASS_EXTERNAL     | CSS_LINK_CLASS_EXTERNAL=external                | CSS class name of links which points to internal tagets                    |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| CSS_CLASS_QFQ_CONTAINER     |CSS_CLASS_QFQ_CONTAINER=container                | QFQ with own Bootstrap: 'container'.                                       |
|                             |                                                 | QFQ already nested in Bootstrap of mainpage: <empty>                       |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| CSS_CLASS_QFQ_FORM_PILL     |CSS_CLASS_QFQ_FORM_PILL=qfq-color-grey-1         | Wrap around title bar for pills: CSS Class, typically a background color   |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| CSS_CLASS_QFQ_FORM_BODY     |CSS_CLASS_QFQ_FORM_BODY=qfq-color-grey-2         | Wrap around formelements: CSS Class, typically a background color          |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| DATE_FORMAT                 | DATE_FORMAT= yyyy-mm-dd                         | Possible options: yyyy-mm-dd, dd.mm.yyyy                                   |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| FORM_DATA_PATTERN_ERROR     |FORM_DATA_PATTERN_ERROR=please check pa.         | Customizable error message used in validator.js. 'pattern' violation       |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| FORM_DATA_REQUIRED_ERROR    |FORM_DATA_REQUIRED_ERROR=missing value           | Customizable error message used in validator.js. 'required' fields         |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| FORM_DATA_MATCH_ERROR       |FORM_DATA_MATCH_ERROR=type error                 | Customizable error message used in validator.js. 'match' retype mismatch   |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| FORM_DATA_ERROR             |FORM_DATA_ERROR=generic error                    | Customizable error message used in validator.js. 'no specific' given       |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| FORM_BS_COLUMNS             | FORM_BS_COLUMNS=12                              | The whole form will be wrapped in 'col-md-??'. Default is 12 for 100%      |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| FORM_BS_LABEL_COLUMNS       | FORM_BS_LABEL_COLUMNS = 3                       | Default number of BS columns for the 'label'-column                        |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| FORM_BS_INPUT_COLUMNS       | FORM_BS_INPUT_COLUMNS = 6                       | Default number of BS columns for the 'input'-column                        |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| FORM_BS_NOTE_COLUMNS        | FORM_BS_NOTE_COLUMNS = 3                        | Default number of BS columns for the 'note'-column                         |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
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| FORM_BUTTON_ON_CHANGE_CLASS | FORM_BUTTON_ON_CHANGE_CLASS=alert-info btn-info | Color for save button after modification                                   |
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+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| BASE_URL_PRINT              | BASE_URL_PRINT=http://example.com               | URL where wkhtmltopdf will fetch the HTML (no parameter, those comes later)|
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| WKHTMLTOPDF                 | WKHTMLTOPDF=/usr/bin/wkhtmltopdf                | Binary where to find wkhtmltopdf.                                          |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| EDIT_FORM_PAGE              | EDIT_FORM_PAGE = form                           | T3 Pagealias to edit a form.                                               |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
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| LDAP_1_RDN                  | LDAP_1_RDN='ou=Admin,ou=example,dc=com'         | Credentials for non-anonymous LDAP access. At the moment only one set of   |
+-----------------------------+-------------------------------------------------+ crendentials is supported.                                                 |
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| LDAP_1_PASSWORD             | LDAP_1_PASSWORD=mySecurePassword                |                                                                            |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
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| SECURITY_VARS_HONEYPOT      | SECURITY_VARS_HONEYPOT = email,username,password| If empty: no check. All named variables will rendered as INPUT elements    |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| SECURITY_ATTACK_DELAY       | SECURITY_ATTACK_DELAY = 5                       | If an attack is detected, sleep 'x' seconds and exit PHP process           |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| SECURITY_SHOW_MESSAGE       | SECURITY_SHOW_MESSAGE = true                    | If an attack is detected, show a message                                   |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
| SECURITY_GET_MAX_LENGTH     | SECURITY_GET_MAX_LENGTH = 32                    | Check that there are no GET vars longer than 'x' chars                     |
+-----------------------------+-------------------------------------------------+----------------------------------------------------------------------------+
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Example: *typo3conf/config.qfq.ini*

::

	; To get internal default values, inactivate the option by commenting (= ';') it.
	DB_USER = qfqUser
	DB_SERVER = localhost
	DB_PASSWORD = 12345678
	DB_NAME = qfq_db
	DB_INIT = set names utf8
	SQL_LOG = sql.log
	SHOW_DEBUG_INFO = auto
	CSS_LINK_CLASS_INTERNAL = internal
	CSS_LINK_CLASS_EXT = external
	;CSS_CLASS_QFQ_CONTAINER =
	;CSS_CLASS_QFQ_FORM =
	CSS_CLASS_QFQ_FORM_PILL = qfq-color-grey-1
	CSS_CLASS_QFQ_FORM_BODY = qfq-color-grey-2
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	;DATE_FORMAT= yyyy-mm-dd
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	;FORM_DATA_PATTERN_ERROR =
	;FORM_DATA_REQUIRED_ERROR =
	;FORM_DATA_MATCH_ERROR =
	;FORM_DATA_ERROR =
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	;FORM_BS_COLUMNS = 12
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	;FORM_BS_LABEL_COLUMNS = 3
	;FORM_BS_INPUT_COLUMNS = 6
	;FORM_BS_NOTE_COLUMNS = 3
	BASE_URL_PRINT=http://example.com
	WKHTMLTOPDF=/usr/bin/wkhtmltopdf
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	;EDIT_FORM_PAGE = form
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	;LDAP_1_RDN='ou=Admin,dc=example,dc=com'
	;LDAP_1_PASSWORD=mySecurePassword
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	;SECURITY_VARS_HONEYPOT=email,username,password
	;SECURITY_ATTACK_DELAY=5
	;SECURITY_SHOW_MESSAGE=true
	;SECURITY_GET_MAX_LENGTH=32
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.. _local-documentation:

Local Documentation
-------------------

To render the QFQ reST documentation:

* Take care to have 'unzip' and 'Python setuptools' installed (necessary to run).

Preparation for Ubuntu 16.04::

	sudo apt install unzip python-setuptools python-pip

* Install the extension "Sphinx Python Documentation Generator and Viewer" (sphinx).

  * Execute the update script (symbol 'two arrows as a circle' behind the extension name)
  * Choose 'Sphinx 1.4.4' - click on 'Import'.

* In the Exension Manager open the configuration dialog of the extension 'sphinx'. Activate the 'Sphinx 1.4.4' option and save it.
* On top of the browser window click on the 'question mark' to open the menu, choose 'Sphinx'.
* Show doumentation 'QFQ Extension'

* If you have problems with the rendering, please check: http://mbless.de/blog/2015/01/26/sphinx-doc-installation-steps.html

.. _concept:

Concept
=======

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SIPs
----

The following is a technical background information. Not needed to just use QFQ.

The SIPs are uniq timestamps, created/registered on the fly for a specific browser session (=user). Every SIP is
registered on the server (= stored in a PHP Session) and contains one or more key/value pairs. The key/value pairs never leave
the server. The SIPs will be used:

* to protect values not to be spoofed by anyone,
* to protect values not to be altered by anyone,
* to grant access, e.g.:

  * load and save forms,
  * upload files,
  * download files,
  * PHP AJAX pages.

SIPs becomes invalid, as soon as the current browser session is destroyed. The client (= user) can't manipulate the content
of SIPs - it's only possible to reuse already registered SIPs by the user, who already owns the session.
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Access privileges
-----------------

The Typo3 FE Groups can be used to implement access privileges. Such groups are assigned to
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* Typo3 FE users,
* Typo3 pages,
* and/or Typo3 content records (e.g. QFQ records).

This will be used for general page structure privileges.

A `record base` privileges controlling (e.g. which user can edit
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which person record) will be implicit configured, by the way that records are viewable / editable (or not) through
SQL in the specific QFQ tt-content statements.
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Typo3 QFQ content element
-------------------------

Insert one or more QFQ content elements on a Typo3 page. Specify column and language per content record as wished.

The title of the QFQ content element will not be rendered. It's only visible in the backend for orientation.

QFQ Keywords (Bodytext)
^^^^^^^^^^^^^^^^^^^^^^^

 +-------------------+---------------------------------------------------------------------------------+
 | Name              | Explanation                                                                     |
 +===================+=================================================================================+
 | form              | Formname defined in ttcontent record bodytext                                   |
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 |                   | - Fix. E.g.: **form = person**                                                  |
 |                   | - by SIP: **form = {{form}}**                                                   |
 |                   | - by SQL: **form = {{SELECT c.form FROM conference AS c WHERE c.id={{a:C}} }}** |
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 +-------------------+---------------------------------------------------------------------------------+
 | r                 | <record id> The form will load the record with the specified id                 |
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 |                   | - Variants: **r = 123**, by SQL: **r = {{SELECT ...}}**                         |
 |                   | - If not specified, the default is '0'                                          |
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 +-------------------+---------------------------------------------------------------------------------+
 | <level>.db        | Select a DB. Only necessary if a different than the standard DB should be used. |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.fbeg      | Start token for every field (=column)                                           |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.fend      | End token for every field (=column)                                             |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.head      | Start token for whole <level>                                                   |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.tail      | End token for whole <level>                                                     |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.rbeg      | Start token for row.                                                            |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.rbgd      | Alternating (per row) token                                                     |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.rend      | End token for row. Will be rendered **before** subsequent levels are processed  |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.renr      | End token for row. Will be rendered **after** subsequent levels are processed   |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.rsep      | Seperator token between rows                                                    |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.fsep      | Seperator token between fields (=columns)                                       |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.sql       | SQL Query                                                                       |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.althead   | If <level>.sql is empty, these token will be rendered                           |
 +-------------------+---------------------------------------------------------------------------------+
 | debugShowBodyText | If ='1' and config.qfq.ini:*showDebugInfo=yes* - shows a tooltip with bodytext  |
 +-------------------+---------------------------------------------------------------------------------+

.. _debug:

Debug
^^^^^

* config.ini: *SHOW_DEBUG_INFO = yes|no|auto*

  * *yes*:

    * Form:

      * For every internal link/button, show tooltips with decoded SIP on mouseover.
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      * Shows an 'Edit form'-button (wrench symbol) on a form. The link points to the T3 page with the :ref:`form-editor`.
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    * Report: Will be configured per tt-content record.

      *debugShowBodyText = 1*

  * *no*: No debug info.

  * *auto*: Depending if there is a Typo3 BE session, set internally:

    * *SHOW_DEBUG_INFO = yes*  (BE session exist)
    * *SHOW_DEBUG_INFO = no*   (no BE session)


.. _variables:

Variables
---------

Most fields of a form or report specification might contain:

* ''constants'' (=strings), this is the standard use case.
* ''variables'' retrieved from the stores (see below),
* ''SQL statements'' (limited set of),
* or any combination of the above.

* A variable (or SQL) statement is surrounded by curly braces:

  *{{VarName[:<store / prio>[:<sanitize class>[:<escape>]]]}}*

* Example:

  *{{r}}*

  *{{index:FS}}*

  *{{name:FS:alnumx:s}}*

  *{{SELECT name FROM person WHERE id=1234}}*

  *{{SELECT name FROM person WHERE id={{r}} }}*

  *{{SELECT name FROM person WHERE id={{key1:C:alnumx}} }}*

* Leading and trailing spaces inside curly braces are removed.

  * *{{ SELECT "Hello World"   }}* acts as *{{SELECT "Hello World"}}*
  * *{{ varname   }}* acts as *{{varname}}*


* There are several stores, from where to retrieve the value. If a value is not found in one store, the next store is searched,
  until a value is found or there are no more stores available.
* If anywhere along the line an empty string is found, this **is** a value: therefore, the search will stop.
* If no value is found, the value is an <empty string>.

URL Parameter
^^^^^^^^^^^^^

* URL (=GET) Parameter can be used in *forms* and *reports* as variables.
* If a value violates a parameter sanitize class, the value becomes an empty string.

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Escape
^^^^^^

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Variables used in SQL Statements might cause trouble by using: NUL (ASCII 0), \\n, \\r, \\, ', ", and Control-Z.

Available `escape` types:
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	* 'm' - `real_escape_string() <http://php.net/manual/en/mysqli.real-escape-string.php>`_ (m = mysql)
	* 'l' - LDAP search filter values will be escaped: `ldap-escape() <http://php.net/manual/en/function.ldap-escape.php>`_ (LDAP_ESCAPE_FILTER).
	* 'L' - LDAP DN values will be escaped. `ldap-escape() <http://php.net/manual/en/function.ldap-escape.php>`_ (LDAP_ESCAPE_DN).
	* 's' - single ticks will be escaped. str_replace() of ' against \\'.
	* 'd' - double ticks will be escaped: str_replace() of " against \\".
	* '-' - no escaping.
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* The `escape` type is defined by the fourth parameter of the variable. E.g.: `{{name:FE:alnumx:m}}` (m = mysql).
* It's possible to combine different `escape` types, they will be processed in the order given. E.g. `{{name:FE:alnumx:Ls}}` (L, s).
* Escaping is typically necessary for SQL or LDAP queries.
* Be careful when escaping nested variables. Best is to escape **only** the most outer variable.
* In `config.qfq.ini`_ a global `default escape type` can be defined. Such type applies to all substituted variables without
  a *specific* escape type.
* Additionally a `default escape type` can be defined per `Form`. This overwrites the global definition of `config.qfq.ini`.
* To suppress a default escape type, the `escape type` = '-' will switch of escaping. E.g.: `{{name:FE:alnumx:-}}`.
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Sanitize class
^^^^^^^^^^^^^^

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* All values in Store *C* (Client=Browser) and store *F* (Form) will be sanitized:
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* All `predefined-variable-names`_ have a specific default sanitize class. For these variables, it's not necessary
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  to specify a sanitize class.
* All other variables (Store: C, F) get by default the sanitize class defined in the corresponding form. If not defined
  the default class is 'digit'.
* A default sanitize class can be overwritten by individual definition: *{{a:C:all}}*

+------------------+------+-------+-----------------------------------------------------------------------------------------+
| Name             | Form | Query | Pattern                                                                                 |
+==================+======+=======+=========================================================================================+
| **alnumx**       | Form | Query | [A-Za-z][0-9]@-_.,;: /() ÀÈÌÒÙàèìòùÁÉÍÓÚÝáéíóúýÂÊÎÔÛâêîôûÃÑÕãñõÄËÏÖÜŸäëïöüÿ             |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **digit**        | Form | Query | [0-9]                                                                                   |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **numerical**    | Form | Query | [0-9.-+]                                                                                |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **email**        | Form | Query | [a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}                                          |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **min|max**      | Form |       | Compares the value against an lower and upper limit (numeric or string).                |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **min|max date** | Form |       | Compares the value against an lower and upper date or datetime.                         |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **pattern**      | Form |       | Compares the value against a regexp.                                                    |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **allbut**       | Form | Query | All characters allowed, but not [ ]  { } % & \ #. The used regexp: '^[^\[\]{}%&\\#]+$', |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **all**          | Form | Query | no sanitizing                                                                           |
+------------------+------+-------+-----------------------------------------------------------------------------------------+

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Security
========

All values passed to QFQ will be:

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* Checked against max. length and allowed content, on the client and on the server side. On the server side, the check
  happens before any further processing. The 'length' and 'allowed' content is specified per `FormElement`. 'alnumx' is the
  default allowed content for those. Violating the rules will stop the 'save record' process (Form) or result in an empty value (Report).

* Only elements defined in the `Form` definition or requested by `Report` will be processed.

* UTF8 normalized (normalizer::normalize) to unify different ways of composing characters. It's more a database interest
  to work with unified data.

SQL statements are typically fired as `prepared statements` with separated variables.
Further *custom* SQL statements will be defined by the webmaster - those do not use `prepared statements` and might be
affected by SQL injection. To prevent SQL injection, every variable can be escaped with `mysqli::real_escape_string` by
defining the `escape` modifier `m`.

**QFQ notice**:

* Variables passed by the client (=Browser) are untrusted and use the default sanatize class 'digit' (if nothing else is
  specified). If alpha characters are submitted, the content violates `digit` and becomes therefore empty - there is no
  error message. Best is to always use SIP or digits.
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Get Parameter
-------------

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**QFQ security restriction**:
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* GET parameter might contain urlencoded content (%xx). Therefore all GET parameter will be processed by 'urldecode()'.
  As a result a text like '%nn' in GET variables will always be decoded. It's not possible to transfer '%nn' itself.
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* GET variables are limited to SECURITY_GET_MAX_LENGTH chars - any violation will stop QFQ.
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Post Parameter
--------------

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required, the encoding can be disabled per FormElement: `encode=none` (default is `specialchar`).

During Form load, htmlentities are decoded again.
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$_SERVER
--------

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All $_SERVER vars are htmlentities encoded (all, not only specialchars!) .
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Honeypot
--------

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Every QFQ Form contains 'honeypot'-HTML input elements (HTML: hidden & readonly). Which of them to use is configured in
`config.qfq.ini`_ (default:   'username', 'password' and 'email'). On every start of QFQ (form, report, save, ...),
these variables are tested if they are non-empty. If any of the default configured are needed, an explicit variable name
list have to be unconfigured in `config.qfq.ini`_.
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**QFQ security restriction**:
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* The honeypot variables can't be used in GET or POST as regular HTML input elements - any values of them will terminate QFQ.
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Violation
---------

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On any violation, QFQ will sleep SECURITY_ATTACK_DELAY seconds (`config.qfq.ini`_) and than exit the running PHP process.
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A detected attack leads to a complete white (=empty) page.

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If SECURITY_SHOW_MESSAGE = true (`config.qfq.ini`_), at least a message is displayed.
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Client Parameter via SIP
------------------------
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Links with URL parameters, targeting to the local website, are typically SIP encoded. Instead of transferring the parameter
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as part of the URL, only one uniqe GET parameter 's' is appended at the link. The parameter 's' is uniq (equal to a
timestamp) for the user. Assigned variables are stored as a part of the PHP user session on the server.
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Two users might have the same value of parameter 's', but the content is completely independet.

Variables needed by Typo3 remains on the link and are not 'sip-encoded'.

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Secure direct fileaccess
------------------------

If the application uploads files, mostly it's not necessary and often a security issue, to offer a direct download of
the uploaded files. Best is to create a directory, e.g. `fileadmin/protected` and deny direct access via webbrowser to it.
E.g. for Apache set a htaccess rule: ::

		<Directory /var/www/html/fileadmin/protected>
			Require all denied
		</Directory>

To offer download of those files, use the reserved columnname '_download':`download`_ or variants.


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Store
=====

Only variables that are known in a specified store can be substituted.

 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 |Name |Description                                                                             | Content                                                                    |
 +=====+========================================================================================+============================================================================+
 | F   | :ref:`STORE_FORM`: data not saved in database yet.                                     | All native *FormElements*. Recent values from the Browser.                 |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | S   | :ref:`STORE_SIP`: Client parameter 's' will indicate the current SIP, which will be    | sip, r (recordId), form                                                    |
 |     | loaded from the SESSION repo to the SIP-Store.                                         |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | R   | :ref:`STORE_RECORD`: Record - the current record loaded in the form                    | All columns of the current record from the current table                   |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | B   | :ref:`STORE_BEFORE`: Record - the current record loaded in the form before any update  | All columns of the current record from the current table                   |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | P   | Parent record. E.g.: on multi forms the current record of the outer query              | All columns of the MultiSQL Statement from the table for the current row   |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | D   | Default values column : The *table.column* specified *default value*.                  |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | M   | Column type: The *table.column* specified *type*                                       |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | C   | :ref:`STORE_CLIENT`: POST variable, if not found: GET variable                         | Parameter sent from the Client (=Browser).                                 |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | T   | :ref:`STORE_TYPO3`: a) Bodytext (ttcontent record), b) Typo3 internal variables        | See Typo3 tt_content record configuration                                  |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | V   | :ref:`STORE_VARS`: Generic variables                                                   |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
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 | L   | :ref:`STORE_LDAP`: Will be filled on demand during processing of a *FormElement*       | Custom specified list of LDAP attributes                                   |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
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 | 0   | *Zero* - allways value: 0, might be helpful if a variable is empty or undefined and    | Any key                                                                    |
 |     | will be used in an SQL statement.                                                      |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | E   | *Empty* - allways an empty string, might be helpful if a variable is empty or undefined| Any key                                                                    |
 |     | and will be used in an SQL statement                                                   |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | Y   | :ref:`STORE_SYSTEM`: a) Database, b) helper vars for logging/debugging:                |                                                                            |
 |     | SYSTEM_SQL_RAW ... SYSTEM_FORM_ELEMENT_COLUMN, c) Any custom fields: CONTACT, HELP, ...|                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+

* Default *<prio>*: *FSRVD* - Form / SIP / Record / Vars / Table definition.
* Hint: Preferable, parameter should be submitted by SIP, not by Client (=URL).

  * Warning: Data submitted via 'Client' can be easily spoofed and altered.
  * Best: Data submitted via SIP never leaves the server, cannot be spoofed or altered by the user.
  * SIPs can _only_ be defined by using *Report*. Inside of *Report* use columns 'Link' (with attribute 's'), 'page?' or 'Page?'.

.. _predefined-variable-names:

Predefined variable names
-------------------------

.. _STORE_FORM:

Store: *FORM* - F
^^^^^^^^^^^^^^^^^

* Sanatized: *yes*
* Represents the values in the form, typically before saving them.
* Used for:

  * *FormElements* who will be rerendered, after a parent *FormElement* has been changed by the user.
  * *FormElement* actions, before saving the form.
  * Values will be sanitized by the class configured in corresponding the *FormElement*. By default, the sanitize class is `alnumx`.

 +---------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                            | Explanation                                                                                                                                |
 +=================================+============================================================================================================================================+
 | <FormElement name>              | Name of native *FormElement*. To get, exactly and only, the specified *FormElement* (for 'pId'): *{{pId:F}}*                               |
 +---------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+

.. _STORE_SIP:

Store: *SIP* - S
^^^^^^^^^^^^^^^^

* Sanatized: *no*
* Filled automatically by creating links. E.g.:

  * in `Report` by using `_page?` or `_link` (with active 's')
  * in `Form` by using subrecords: 'new', 'edit', 'delete' links (system) or by column type `_page?`, `_link`.

 +-------------------------+-----------------------------------------------------------+
 | Name                    | Explanation                                               |
 +=========================+===========================================================+
 | sip                     | 13 char uniqid                                            |
 +-------------------------+-----------------------------------------------------------+
 | r                       | current record id                                         |
 +-------------------------+-----------------------------------------------------------+
 | form                    | current form name                                         |
 +-------------------------+-----------------------------------------------------------+
 | table                   | current table name                                        |
 +-------------------------+-----------------------------------------------------------+
 | urlparam                | all non Typo3 paramter in one string                      |
 +-------------------------+-----------------------------------------------------------+
 | <user defined>          | additional user defined link parameter                    |
 +-------------------------+-----------------------------------------------------------+

.. _STORE_RECORD:

Store: *RECORD* - R
^^^^^^^^^^^^^^^^^^^

* Sanatized: *no*
* Current record loaded in Form.
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* If r=0, all values are empty.
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 +------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                   | Explanation                                                                                                                                      |
 +========================+==================================================================================================================================================+
 | <column name>          | Name of a column of the primary table (as defined in the current form). To get, exactly and only, the specified form *FormElement*: *{{pId:R}}*  |
 +------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+

.. _STORE_BEFORE:

Store: *BEFORE* - B
^^^^^^^^^^^^^^^^^^^

* Sanatized: *no*
* Current record loaded in Form without any modification.
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* If r=0, all values are empty.
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This store is handy to compare new and old values of a form.

 +------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                   | Explanation                                                                                                                                      |
 +========================+==================================================================================================================================================+
 | <column name>          | Name of a column of the primary table (as defined in the current form). To get, exactly and only, the specified form *FormElement*: *{{pId:R}}*  |
 +------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+

.. _STORE_CLIENT:

Store: *CLIENT* - C
^^^^^^^^^^^^^^^^^^^

* Sanatized: *yes*

 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                    | Explanation                                                                                                                              |
 +=========================+==========================================================================================================================================+
 | s                       | =SIP                                                                                                                                     |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | r                       | record id. Typically stored in SIP, rarely specified on the URL                                                                          |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | keySemId                | always current Semester Id                                                                                                               |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | keySemIdUser            | *{{keySemIdUser}}*, may be changed by user                                                                                               |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | HTTP_HOST               | current HTTP HOST                                                                                                                        |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | REMOTE_ADDR             | Client IP address                                                                                                                        |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | '$_SERVER[*]'           | All other variables accessable by *$_SERVER[]*. Only the often used have a pre-defined sanitize class.                                   |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | form                    | Unique name of current form                                                                                                              |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | ANREDE                  | *{{sex}}* == male >> Sehr geehrter Herr, *{{sex}}* == female  Sehr geehrte Frau                                                          |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | EANREDE                 | *{{sex}}* == male >> Dear Mr., *{{sex}}* == female >> Dear Mrs.                                                                          |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+

.. _STORE_TYPO3:

Store: *TYPO3* (Bodytext) - T
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* Sanatized: *no*

 +-------------------------+-------------------------------------------------------------------+----------+
 | Name                    | Explanation                                                       | Note     |
 +=========================+===================================================================+==========+
 | form                    | Formname defined in ttcontent record bodytext                     | see note |
 |                         |                                                                   |          |
 |                         | * Fix. E.g. *form = person*                                       |          |
 |                         | * via SIP. E.g. *form = {{form}}*                                 |          |
 +-------------------------+-------------------------------------------------------------------+----------+
 | pageId                  | Record id of current Typo3 page                                   | see note |
 +-------------------------+-------------------------------------------------------------------+----------+
 | pageType                | Current selected page type (typically URL parameter 'type')       | see note |
 +-------------------------+-------------------------------------------------------------------+----------+
 | pageLanguage            | Current selected page language (typically URL parameter 'L')      | see note |
 +-------------------------+-------------------------------------------------------------------+----------+
 | ttcontentUid            | Record id of current Typo3 content element                        | see note |
 +-------------------------+-------------------------------------------------------------------+----------+
 | feUser                  | Logged in Typo3 FE User                                           |          |
 +-------------------------+-------------------------------------------------------------------+----------+
 | feUserUid               | Logged in Typo3 FE User uid                                       |          |
 +-------------------------+-------------------------------------------------------------------+----------+
 | feUserGroup             | FE groups of logged in Typo3 FE User                              |          |
 +-------------------------+-------------------------------------------------------------------+----------+

* **note**: not available
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  * in :ref:`dynamic-update` or
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  * by *FormElement* class 'action' with type 'beforeSave', 'afterSave', 'beforeDelete', 'afterDelete'.

.. _STORE_VARS:

Store: *VARS* - V
^^^^^^^^^^^^^^^^^

* Sanatized: *no*

 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                    | Explanation                                                                                                                                |
 +=========================+============================================================================================================================================+
 | random                  | random string with length of 32 chars, alphanum                                                                                            |
 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | slaveId                 | see *FormElement* `action`                                                                                                                 |
 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | filename                | Original filename of an uploaded file via an 'upload'-FormElement. Valid only during processing of the current 'upload'-formElement.       |
 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | fileDestinaton          | Destination (path & filename) for an uploaded file. Defined in an 'upload'-FormElement.parameter. Valid: same as 'filename'.               |
 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+

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.. _STORE_LDAP:

Store: *LDAP* - L
^^^^^^^^^^^^^^^^^

* Sanatized: *yes*
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* See also :ref:`LDAP`:
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 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                    | Explanation                                                                                                                                |
 +=========================+============================================================================================================================================+
 | <custom defined>        | See *ldapAttributes*                                                                                                                       |
 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+


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.. _STORE_SYSTEM:

Store: *SYSTEM* - Y
^^^^^^^^^^^^^^^^^^^

* Sanatized: *no*

 +-------------------------+--------------------------------------------------------------------------+
 | Name                    | Explanation                                                              |
 +=========================+==========================================================================+
 | DB_USER                 | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | DB_SERVER               | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | DB_NAME                 | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | DB_INIT                 | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | SQL_LOG                 | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | SQL_LOG_MODE            | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | SHOW_DEBUG_INFO         | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | CSS_LINK_CLASS_INTERNAL | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | CSS_LINK_CLASS_EXTERNAL | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | CSS_CLASS_QFQ_CONTAINER | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | EXT_PATH                | computed during runtime                                                  |
 +-------------------------+--------------------------------------------------------------------------+
 | SITE_PATH               | computed during runtime                                                  |
 +-------------------------+--------------------------------------------------------------------------+
 | DATE_FORMAT             | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | class                   | defined in config.ini (CSS_CLASS_QFQ_FORM) or form definition            |
 +-------------------------+--------------------------------------------------------------------------+
 | classPill               | defined in config.ini (CSS_CLASS_QFQ_FORM_PILL) or form definition       |
 +-------------------------+--------------------------------------------------------------------------+
 | classBody               | defined in config.ini (CSS_CLASS_QFQ_FORM_BODY) or form definition       |
 +-------------------------+--------------------------------------------------------------------------+
 | data-pattern-error      | defined in config.ini or form definition                                 |
 +-------------------------+--------------------------------------------------------------------------+
 | data-require-error      | defined in config.ini or form definition                                 |
 +-------------------------+--------------------------------------------------------------------------+
 | data-match-error        | defined in config.ini or form definition                                 |
 +-------------------------+--------------------------------------------------------------------------+
 | data-error              | defined in config.ini or form definition                                 |
 +-------------------------+--------------------------------------------------------------------------+
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 | bsColumns               | defined in config.ini (FORM_BS_COLUMNS) or form definition               |
 +-------------------------+--------------------------------------------------------------------------+
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 | bsLabelColumns          | defined in config.ini (FORM_BS_LABEL_COLUMNS) or form definition         |
 +-------------------------+--------------------------------------------------------------------------+
 | bsInputColumns          | defined in config.ini (FORM_BS_INPUT_COLUMNS) or form definition         |
 +-------------------------+--------------------------------------------------------------------------+
 | bsNoteColumns           | defined in config.ini (FORM_BS_NOTE_COLUMNS) or form definition          |
 +-------------------------+--------------------------------------------------------------------------+
 | sqlFinal                | computed during runtime, used for error reporting                        |
 +-------------------------+--------------------------------------------------------------------------+
 | sqlParamArray           | computed during runtime, used for error reporting                        |
 +-------------------------+--------------------------------------------------------------------------+
 | sqlCount                | computed during runtime, used for error reporting                        |
 +-------------------------+--------------------------------------------------------------------------+

SQL Statement
-------------

* The detection of an SQL command is case *insensitive*.
* Leading  whitespace will be skipped.
* The following commands are interpreted as SQL commands:

  * SELECT
  * INSERT, UPDATE, DELETE, REPLACE, TRUNCATE
  * SHOW, DESCRIBE, EXPLAIN, SET

* A SQL Statement might contain parameters, including additional SQL statements. Inner SQL queries will be executed first.
* All variables will be substituted one by one from inner to outer.
* Maximum recursion depth: 5 (a recursion depth of 2 is sometimes used for mailing with templates, 3 and more probably confuses too much and is therefore not practicable, but supported until depth of 5)
* The number of variables inside an input field or a SQL statement is not limited.
* A resultset of a SQL statement will be imploded over all: concat all columns of a row, concat all rows - there is no glue string.

* Example::

  {{SELECT id, name FROM Person}}
  {{SELECT id, name, IF({{feUser}}=0,'Yes','No')  FROM Vorlesung WHERE sem_id={{keySemId:Y}} }}
  {{SELECT id, city FROM Address AS adr WHERE adr.pId={{SELECT id FROM Account AS acc WHERE acc.name={{feUser}} }} }}

* Special case for SELECT input fields. To deliver a result array specify an '!' before the SELECT: ::

   {{!SELECT ...}}

  * This is only possible for the outermost SELECT.

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.. _LDAP:

LDAP
====

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in the *parameter* field of the *Form* and/or the *FormElement*. Definitions of the *FormElement* will overwrite definitions
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of the *Form*. One LDAP Server can be configured per *FormElement*. Multiple *FormElements* might use individual LDAP
Server configurations.
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* only necessary in one *FormElement*, most usefull setup is to specify all values in that specific *FormElement*,
* needed on multiple *FormElement*s (of the same *Form*, e.g. one *input* with *typeAhead*, one *note* and one *action*), it's more
  efficient to specify the base parameter *ldapServer*, *ldapBaseDn* in *Form.parameter* and the rest on the current
  *FormElement*.

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+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| Parameter                   | Example                          | Description                                                   | Form | FormElement | Used for |
+=============================+==================================+===============================================================+======+=============+==========+
| ldapServer                  | directory.example.com            | Hostname. For LDAPS: `ldaps://directory.example.com:636`      | x    | x           | TA, FSL  |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| ldapBaseDn                  | ou=Addressbook,dc=example,dc=com | Base DN to start the search                                   | x    | x           | TA, FSL  |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| ldapAttributes              | cn, email                        | List of attributes to save in STORE_LDAP                      | x    | x           | FSL      |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| ldapSearch                  | (mail=john.doe@example.com)      | Regular LDAP search expresssion                               | x    | x           | FSL      |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| ldapTimeLimit               | 3 (default)                      | Maximum time to wait for an answer of the LDAP Server         | x    | x           | TA, FSL  |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| ldapUseBindCredentials      | ldapUseBindCredentials=1         | Use LDAP_1_* crendentials from config.qfq.ini for ldap_bind() | x    | x           | TA, FSL  |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| typeAheadLdap               | -                                | Enable LDAP as 'Typeahead' data source                        |      | x           | TA       |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| typeAheadLdapSearch         | `(|(cn=*?*)(mail=*?*))`          | Regular LDAP search expresssion, returns upto typeAheadLimit  | x    | x           | TA       |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| typeAheadLdapSearchPrefetch | `(mail=?)`                       | Regular LDAP search expresssion, typically return one record  | x    | x           | TA       |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
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| typeAheadLdapSearchPerToken | -                                | Split search value in token and permutate search combination  | x    | x           | TA       |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
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| typeAheadLdapValuePrintf    | `'%s / %s', cn, mail`            | Custom format to display attributes, as `value`               | x    | x           | TA       |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| typeAheadLdapIdPrintf       | `'%s', mail`                     | Custom format to display attributes, as `id`                  | x    | x           | TA       |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| typeAheadLimit              | 20 (default)                     | Result will be limited to this number of entries              | x    | x           | TA       |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| typeAheadPedantic           | typeAheadPedantic                | Activate 'pedantic' mode - only valid keys are allowed        | x    | x           | TA       |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| typeAheadMinLength          | 2 (default)                      | Minimum number of characters before starting the search       | x    | x           | TA       |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
| fillStoreLdap               | -                                | Activate `Fill STORE LDAP` with the first retrieved record    |      | x           | FSL      |
+-----------------------------+----------------------------------+---------------------------------------------------------------+------+-------------+----------+
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* *typeAheadLimit*: there might be a hard limit on the server side (e.g. 100) - which can't be extended.
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* *ldapUseBindCredentials* is only necessary if `anonymous` access is not possible. RDN and password has to be configured in
  `config.qfq.ini`.
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.. _LDAP_Typeahead:

Typeahead (TA)
--------------

*Typeahead* offers continous searching of a LDAP directoy by using a regular *FormElement* of type *text*.
The *FormElement.parameter*=*typeAheadLdap* will trigger LDAP searches on every user **keystroke**
(starting after *typeAheadMinLength* keystrokes) for the current *FormElement* - this is different from *dynamicUpdate*
(triggered by leaving focus of an input element). Typeahead delivers a list of elements.

* *FormElement.parameter.typeAheadLdap* - activate the mode *Typeahead* - no value is needed, the existence is suffucient.
* *Form.parameter* or *FormElement.parameter*:

  * *ldapServer* = `directory.example.com`
  * *ldapBaseDn* =  `ou=Addressbook,dc=example,dc=com`
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  * *typeAheadLdapSearch* = `(|(cn=*?*)(mail=*?*))`
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  * *typeAheadLdapValuePrintf* = `'%s / %s', cn, email`
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  * *typeAheadLdapIdPrintf* = `'%s', email`
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  * Optional: *ldapUseBindCredentials* = 1
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All fetched LDAP values will be formatted with:
* *typeAheadLdapValuePrintf*, shown to the user in a drop-down box and
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* *typeAheadLdapIdPrintf*, which represents the final data to save.
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The `id/value` translation is compareable to a regular select drop-down box with id/value pairs.
Only attributes, defined in *typeAheadLdapValuePrintf* / *typeAheadLdapIdPrintf* will be fetched from the LDAP directory.
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To examine all possible values of an LDAP server, use the commandline tool `ldapsearch`. E.g.::

  ldapsearch -x -h directory.example.com -L -b ou=Addressbook,dc=example,dc=com "(mail=john.doe@example.com)"

All occurences of a '?' in *ldapSearch* will be replaced by the user data typed in via the text-*FormElement*.
The typed data will be escaped to fullfill LDAP search limitations.
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Regular *Form* variables might be used on all parameter and will be evaluated during form load (!) - *not* at the time when
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the user types something.

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Pedantic
^^^^^^^^

In case the typed value (technically this is the value of the *id*, latest in the moment when loosing the focus) have
to be a valid (= exist on the LDAP server), the *typeAheadPedantic* mode can be activated.
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If the user typed something and that is not a valid *id*, the client (=browser) will delete the input when loosing the focus.
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To identify the exact *id*, an additional search filter is necessary: `ypeAheadLdapSearchPrefetch` - see next topic.
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* *Form.parameter* or *FormElement.parameter*:

  * *typeAheadPedantic*
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Prefetch
^^^^^^^^

After 'form load' with an existing record, the user epects to see the previous saved data. In case there is an *id* to
*value* translation, the *value* does not exist in the database, instead it has to be fetched again dynamically from the
LDAP server. A precise LDAP query has to be defined to force this:

* *Form.parameter* or *FormElement.parameter*:

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  * *typeAheadLdapSearchPrefetch* = `(mail=?)`

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This situation also applies in *pedantic* mode to verify the user input after each change.

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PerToken
^^^^^^^^

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Sometimes a LDAP server only provides attributes like 'sn' and 'givenName', but not 'displayName' or a practial combination of
multiple attributes - than it is difficult to search for 'firstname' and (=boolean AND) 'lastname'. E.g. 'John Doe', results to search like
`(|(sn=*John Doe*)(givenName=*John Doe*))` which will be probably always be empty.
Instead, the user input has to be splitted in token and the search string has to repeated for every token.
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* *Form.parameter* or *FormElement.parameter*:

  * *typeAheadLdapSearchPerToken* - no value needed.

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This will repeat the search string per token.

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E.g.::

   User search string: X Y
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   Ldap search string: (|(a=*?*)(b=*?*))

   Result: (& (|(a=*X*)(b=*X*)) (|(a=*Y*)(b=*Y*))
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Attention: this option is only usefull in specific environments.
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.. _Fill_LDAP_STORE:

Fill STORE LDAP (FSL)
---------------------

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Before processing a *FormElement*, an optional configured FSL-action loads **one** record from a LDAP directory and stores
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the named attributes in STORE_LDAP. If the LDAP search query selects more than one record, only the first record is processed.
The attributes names always becomes lowercase (PHP implentation detail on get_ldap_entries()) in the store. To make
accessing STORE_LDAP easily, the keys are implemented case insensitive for this specific store. FLS is triggered during *Form*-...
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* load,
* dynamic update,
* save.

The FLS happens *before* the main *FormElement* processing starts. Therefore the fetched LDAP data (specified by *ldapAttributes*),
are available via `{{<attributename>:L:allbut:s}}` during the regular *FormElement* processing. Take care to specify
a sanatize class and optional escaping on further processing of those data.

Important: LDAP access might slow down the *Form* processing on load, update or save! The timeout (default: 3 seconds) have
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 to be multiplied by the number of accesses. E.g. a broken LDAP connection and 3 *FormELements* with *FSL*
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 results to 9 seconds delay on save. Also be prepared not to receive the expected data.

* *FormElement.parameter.fillStoreLdap* - activate the mode *Fill S* - no value is needed, the existence is suffucient.
* *Form.parameter* or *FormElement.parameter*:

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  * *ldapServer* = `directory.example.com`
  * *ldapBaseDn* =  `ou=Addressbook,dc=example,dc=com`
  * *typeAheadLdapSearch* = `(|(cn=*?*)(mail=*?*))`
  * *ldapAttributes* = `givenName, sn, telephoneNumber, email`
  * *ldapSearch* = `(mail={{email::l}})`
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  * Optional: *ldapUseBindCredentials* = 1
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After filling the store, access the content via `{{<attributename>:allbut:L:s}}`.
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Form
====

* Forms will be created by using the *QFQ Form Editor* on the Typo3 frontend (HTML form).
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* The Formeditor itself consist of two predefined QFQ forms: *form* and *formElement* - these forms are often updated
  during the installation of new QFQ versions.
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* Every form consist of a) a *Form* record and b) multiple *FormElement* records.
* A form is assigned to a  *table*. Such a table is called the *primary table* for this form.
* There are three types of forms which can roughly categorized into:

  * *Simple* form: the form acts on one record, stored in one table.

    * The form will create necessary SQL commands for insert, update and delete (only primary record) automatically.

  * *Advanced* form: the form acts on multiple records, stored in more than one table.

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    * Fields of the primary table acts like a *simple* form, all other fields have to be specified with *action/afterSave* records.
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  * *Multi* form: the form acts simultanously on more than one record. All records use the same *FormElements*.

    * The *FormElements* are defined as a regular *simple* / or *advanced* form, plus a SQL Query, which selects and
      iterates over all records. Those records will be loaded at the same time.

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* Form mode: The parameter 'r' (given via URL or via SIP) decide if the form is in mode:

  * `New`:

    * Missing parameter 'r' or 'r=0'
    * On form load, no record is displayed.
    * Saving the form creates a new primary record.
    * E.g.: `http://example.com/index.php?id=home&form=Person`  or `http://example.com/index.php?id=home&form=Person&r=0`

  * `Edit`:

    * Parameter 'r>0'
    * On form load, the specified record (<tablename>.id= <r>) will be loaded and displayed.
    * Saving the form will update the existing record.
    * E.g.: `http://example.com/index.php?id=home&form=Person&r=123`

* Display a form:

  * Create a QFQ tt_content record on a Typo 3 page.
  * Inside the QFQ record: `form  = <formname>`. E.g.:

    * Static: `form = Person`
    * Dynamic: `form  = {{form:S}}`  (the left `form` is a keyword for QFQ, the right `form` is a free chooseable variable name)

  * With the `Dynamic` option, it's easily possible to use one Typo3 page and display different forms on that specific
    page. This is nice to configure few Typo 3 pages. The disadvantage is that the user might loose the navigation.
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.. _form-main:

Definition
----------

+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
| Name                    | Type                                                     | Description                                                                             |
+=========================+==========================================================+=========================================================================================+
|id                       | int, autoincrement                                       | created by by MySQL                                                                     |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|name                     | string                                                   | unique and speaking name of the form. Form will be identified by this name              |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|title                    | string                                                   | Title, shown on/above the form.                                                         |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|noteInternal             | textarea                                                 | Internal notes: special functionality, used variables, ...                              |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|tableName                | string                                                   | Primay table of the form                                                                |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|permitNew                | enum('sip', 'logged_in', 'logged_out', 'always', 'never')| Default: sip                                                                            |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|permitEdit               | enum('sip', 'logged_in', 'logged_out', 'always', 'never')| Default: sip                                                                            |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|render                   | enum('plain','table', 'bootstrap')                       | Default bootstrap                                                                       |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|requiredParameter        | string                                                   | Name of required SIP parameter, seperated by comma. '#' as comment delimiter            |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|showButton               | set('new', 'delete', 'close', 'save')                    | Default 'new,delete,close,save'. Shown buttons in the upper right corner of the form.   |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|multiMode                | enum('none','horizontal','vertical')                     | Default 'none'                                                                          |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|multiSql                 | text                                                     | Optional. SQL Query which selects all records to edit.                                  |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|multiDetailForm          | string                                                   | Optional. Form to open, if a record is selected to edit (double click on record line)   |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|multiDetailFormParameter | string                                                   | Optional. Translated Parameter submitted to detailform (like subrecord parameter)       |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|forwardMode              | string: 'auto | no | page'                               |                                                                                         |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|forwardPage              | string / query                                           | If $forward=="page": page to jump to                                                    |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|bsLabelColumns           | string                                                   | The bootstrap grid system is based on 12 columns. The sum of *bsLabelColumns*,          |
+-------------------------+----------------------------------------------------------+ *bsInputColumns* and *bsNoteColumns* should be 12. These values here are the base values|
|bsInputColumns           | string                                                   | for all *FormElements*. Exceptions per *FormElement* can be specified per *FormElement*.|
+-------------------------+----------------------------------------------------------+ Default: label=3, input=6, note=3. See :ref:`form-layout`.                              |
|bsNoteColumns            | string                                                   |                                                                                         |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|parameter                | text                                                     | Misc additional parameters. See :ref:`form-parameter`.                                  |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|deleted                  | string                                                   | 'yes'|'no'.                                                                             |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|modified                 | timestamp                                                | updated automatically through stored procedure                                          |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|created                  | datetime                                                 | set once through QFQ                                                                    |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+

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permitNew & permitEdit
^^^^^^^^^^^^^^^^^^^^^^

Depending on `r`, the following access permission will be taken:

* `r=0` - permitNew
* `r>0` - permitEdit


+------------+---------------------------------------------------------------------------------------------------+
| Option     | Description                                                                                       |
+============+===================================================================================================+
| sip        | The parameter 'form' and 'r' must be supplied via SIP or hard coded in the QFQ tt_content record. |
+------------+---------------------------------------------------------------------------------------------------+
| logged_in  | The form will only be shown if the current User is logged in as a FE User                         |
+------------+---------------------------------------------------------------------------------------------------+
| logged_out | The form will only be shown if the current User is *not* logged in as a FE User                   |
+------------+---------------------------------------------------------------------------------------------------+
| always     | No access restriction, the form will always be shown                                              |
+------------+---------------------------------------------------------------------------------------------------+
| never      | The form will never be shown                                                                      |
+------------+---------------------------------------------------------------------------------------------------+


* `sip` is *always* the preferred way. With 'sip' it's not necessary to differ between logged in or not, cause the SIP
   only  exist and is only valid, if it's created via QFQ/report earlier. This means 'creating' the SIP implies
   'access granted'. The grant will be revoked when the QFQ session is destroyed - this happens when a user loggs out or
   the webbrowser is closed.

* `logged_id` / `logged_out`: for forms which might be displayed without a SIP, but maybe on a protected or even unprotected
  page. *The option is probably not often used.*

* `always`: such a form is always allowed to be loaded.

  * `permitNew=always`: Public accessible forms (e.g. for registration) will allow users to fill and save
    the form.

  * `permitEdit=always`: Public accessible forms will allow users to update existing data. This
    is dangerous, cause the URL paramater (recordId) 'r' might be changed by the user (URL manipulating) and therefore
    the user might see and/or change data from other users. *The option is probably not often used.*

* `never`: such a form is not allowed to be loaded.

  * `permitNew=never`: Public accessible forms. It's not possible to create new records.

  * `permitEdit=none`: Public accessible forms. It's not possible to update records.




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showButton
^^^^^^^^^^

Display or hide the button `new`, `delete`, `close`, `save`.

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* *new*: Creates a new record. If the form needs any special parameter via SIP or Client (=browser), hide this 'new' button - the necessary parameter are not provided.
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* *delete*: This either deletes the current record only, or (if defined via action *FormElement* 'before Delete' ) any specified subrecords.
* *close*: Close the current form. If there are changes, a popup opens and ask to save / close / cancel. The last page from the history will be shown.
* *save*: Save the form.

* Default: show all buttons.

.. _form-parameter:

parameter
^^^^^^^^^

* The following parameter are optional and can be configured in the *Form.parameter* field.

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+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| Name                        | Type   | Description                                                                                              |
+=============================+========+==========================================================================================================+
| bsColumns                   | int    | Wrap the whole form in '<div class="col-md-??">                                                          |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| maxVisiblePill              | int    | Show pills upto <maxVisiblePill> as button, all further in a drop-down menu. Eg.: maxVisiblePill=3       |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| class                       | string | HTML div with given class, surrounding the whole form. Eg.: class=container-fluid                        |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| classPill                   | string | HTML div with given class, surrounding the `pill` title line.                                            |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| classBody                   | string | HTML div with given class, surrounding all *FormElement*.                                                |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| submitButtonText            | string | Show save button, with the <submitButtonText> at the bottom of the form                                  |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| extraDeleteForm             | string | Name of a form which specifies how to delete the primary record and optional slave records               |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-pattern-error          | string | Pattern violation: Text for error message used for all FormElements of current form                      |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-required-error         | string | Required violation: Text for error message used for all FormElements of current form                     |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-match-error            | string | Match violation: Text for error message used for all FormElements of current form                        |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-error                  | string | If none specific is defined: Text for error message used for all FormElements of current form            |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| buttonOnChangeClass         | string | Color for save button after user modified some content or current form. E.g.: 'btn-info alert-info'      |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| ldapServer                  | string | FQDN Ldap Server. E.g.: directory.example.com                                                            |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| ldapBaseDn                  | string | E.g.: `ou=Addressbook,dc=example,dc=com`                                                                 |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| ldapAttributes              | string | List of attributes to fill STORE_LDAP with. E.g.: cn, email                                              |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| ldapSearch                  | string | E.g.: `(mail={{email::alnumx:l}})`                                                                       |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| ldapTimeLimit               | int    | Maximum time to wait for an answer of the LDAP Server                                                    |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadLdap               | -      | Enable LDAP as 'Typeahead' data source                                                                   |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadLdapSearch         | string | Regular LDAP search expresssion. E.g.:  `(|(cn=*?*)(mail=*?*))`                                          |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadLdapValuePrintf    | string | Value formatting of LDAP result, per entry. E.g.: `'%s / %s / %s', mail, roomnumber, telephonenumber`    |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadLdapIdPrintf       | string | Key formatting of LDAP result, per entry. E.g.: `'%s', mail`                                             |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadLdapSearchPerToken | -      | Split search value in token and permutate search combination                                             |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadLimit              | int    | Maximum number of entries. The limit is applied to the server (LDAP or SQL) and the Client               |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadMinLength          | int    | Minimum number of characters which have to typed to start the search.                                    |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| mode                        | string | The value `readonly` will activate a global readonly mode of the form - the user can't change any data.  |
|                             |        | See :ref:`form-mode-readonly`                                                                            |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
| saveButtonActive            | -      | Make the 'save'-button active on *Form* load (instead of waiting for the first user change)              |
+-----------------------------+--------+----------------------------------------------------------------------------------------------------------+
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* Example:

  * maxVisiblePill = 5
  * class = container-fluid
  * classBody = qfq-form-right

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.. _comment-space-character:

Comment- and space-character
''''''''''''''''''''''''''''

* Lines will be trimmed - leading and trailing spaces will be removed.
* If a leading and/or trailing space is needed, escape it: '\ hello world \' > ' hello world '.

* Lines starting with a '#' are treated as a comment and will not be parsed. Suche lines are treated as 'empty lines'
* The comment sign can be escaped with '\'


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submitButtonText
''''''''''''''''

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If specified and non empty, display a regular submit button at the bottom of the page with the given text.
This gives the form a ordinary HTML-form look'n' feel. With this option, the standard buttons on the top right border
should be hided to not confuse the user.

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* Optional.
* Default: Empty

class
'''''

* Optional.
* Default: `container`
* Any CSS class name(s) can be specified.
* Check `typo3conf/ext/qfq/Resources/Public/Css/qfq-bs.css` for predefined classes.
* Typical use: adjust the floating rules of the form.
  * See: http://getbootstrap.com/css/#overview-container
  * Expand the form over the whole area: `container-fluid`

classPill
'''''''''

* Optional.
* Default: `qfq-color-grey-1`
* Any CSS class name(s) can be specified.
* Check `typo3conf/ext/qfq/Resources/Public/Css/qfq-bs.css` for predefined classes.
* Typical use: adjust the background color of the `pill title` area.
* Predefined background colors: `qfq-color-white`, `qfq-color-grey-1` (dark), `qfq-color-grey-2` (light),
  `qfq-color-blue-1` (dark), `qfq-color-blue-2`. (light)
* `classPill` is only visible on forms with container elemants of type 'Pill'.

classBody
'''''''''

* Optional.
* Default: `qfq-color-grey-2`
* Any CSS class name(s) can be specified.
* Check `typo3conf/ext/qfq/Resources/Public/Css/qfq-bs.css` for predefined classes.
* Typical use:

  * adjust the background color of the *FormElement* area.
  * make all form labels right align: `qfq-form-right`.

* Predefined background colors: `qfq-color-white`, `qfq-color-grey-1` (dark), `qfq-color-grey-2` (light),
  `qfq-color-blue-1` (dark), `qfq-color-blue-2`. (light)

extraDeleteForm
'''''''''''''''

Depending on the database definition, it might be necessary to delete the primary record *and* corresponding slave records.
To not repeat such 'slave record delete definition', an 'extraDeleteForm' can be specified. If the user opens a record
in a form and clicks on the 'delete' button, a defined 'extraDeleteForm'-form will be used to delete primary and slave
records instead of using the current form.
E.g. if there are multiple different forms to work on the same table, all of theses forms might reference to the same
'extraDeleteForm'-form. This simplifies the maintenance.

The 'extraDeleteForm' parameter might be specified for a 'form' and/or for 'subrecords'

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.. _form-mode-readonly:

Global Form mode 'readonly'
'''''''''''''''''''''''''''

The form.parameter setting `mode=readonly` will switch the whole form into a `readonly` mode, which is a fast way to use
an existing *Form* just to display the form data, without a possibility for the user to change any data of the form.
The mode can be statically defined in the *Form.parameter* field via::

    mode=readonly

Or dynamically, e.g. via::

    mode={{formModeGlobal:S:alnumx}}

Such variant might be called via SIP. The following shows the same *Form* in the `regular` mode and second in `readonly` mode::

	10.sql = SELECT CONCAT('from&form=person&r=', p.id) as _Pagee, CONCAT('from&form=person&formModeGlobal=readonly&r=', p.id) as _Pagee FROM Person AS p

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FormElements
------------

* Each *form* contains one or more *FormElement*.
* The *FormElements* are divided in three categories:

  * :ref:`class-container`
  * :ref:`class-native`
  * :ref:`class-action`

* Ordering and grouping: Native *FormElements* and Container-Elements (both with feIdContainer=0) will be ordered by 'ord'.
* Inside of a container, all nested elements will be displayed.
* Technical, it's *not* necessary to configure a FormElement for the primary index column `id`.
* Additional options to a *FormElement* will be configured via the *FormElement.parameter* field (analog to *Form.parameter*
  for *Forms* ).

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  * See also: :ref:`comment-space-character`
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.. _class-container:

Class: Container
----------------

* Pills are containers for 'fieldset' *and* / *or* 'native' *FormElements*.
* Fieldsets are containers for 'native' *FormElements*.
* TemplateGroups are containers for 'fieldset' *and* / *or* 'native' *FormElements*.

Type: fieldset
^^^^^^^^^^^^^^

* Native *FormElements* can be assigned to a fieldset.
* FormElement settings:

  * *name*: technical name, used as HTML identifier.
  * *label*: Shown title of the fieldset.

Type: pill
^^^^^^^^^^

* Pill is synonymous for a tab. A pill looks like a tab.
* Pills are only available with mode render='bootstrap'.
* If there is at least one pill defined, every native *FormElement* needs to be assigned to a pill or to a fieldset.
* If there is at least one pill defined, every fieldset needs to be assigned to a pill.

* FormElement settings:

  * *name*: technical name, used as HTML identifier.
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  * *label*: Label shown on the corresponding pill button or inside the drop-down menu.
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  * *type*: *pill*
  * *feIdContainer*: `0`  - Pill's can't be nested.
  * *parameter*:

    * *maxVisiblePill*: `<nr>` - Number of Pill-Buttons shown. Undefined means unlimited. Excess Pill buttons will be
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      displayed as a drop-down menu.
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.. _class-native:

Type: templateGroup
^^^^^^^^^^^^^^^^^^^

*TemplateGroups* will be used to create a series of grouped (by the given *templateGroup*) *FormElements*.

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*FormElements* can be assigned to a *templateGroup*. These *templateGroup* will be rendered upto *n*-times. On 'form load'
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only a single (=first) copy of the *templateGroup* will be shown. Below the last copy of the *templateGroup* an 'add'-button is
shown. If the user click on it, an additional copy of the *templateGroup* is displayed. This can be repeated up to
*templateGroup.maxLength* times. Also, the user can 'remove' previously created copies by clicking on a remove button near
beside every *templateGroup*. The first copy of a templateGroup can't be removed.

* FormElement settings:

  * *label*: Shown in the FormElement-editor *container* field.
  * *maxLength*: Maximum number of copies of the current *templateGroup*. Default: 5.
  * *bsLabelColumn*, *bsInputColumn*, *bsNoteColumn*: column widths for row with the 'Add' button.
  * *parameter*:

    * *tgAddClass*: Class of the 'add' button. Default: `btn btn-default`.
    * *tgAddText*: Text shown on the button. Default: `Add`.
    * *tgRemoveClass*: Class of the 'remove' button. Default: `btn btn-default`.
    * *tgRemoveText*: Text shown on the button. Default: `Remove`.
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    * *tgClass*: Class wrapped around every copy of the *templateGroup*.
      E.g. the class `qfq-child-margin-top` adds a margin between two copies of the *templateGroup*. Default: empty
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Multiple *templateGroups* per form are allowed.

The name of the native FormElements, inside the templateGroup, which represents the effective table columns, uses the placeholder
`%d`. E.g. the columns `grade1`, `grade2`, `grade3` needs a *FormElement.name* = `grade%d`. The counting will always start with 1.
The placeholder `%d` can also be used in the *FormElement.label*

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Example of styling the Add/ Delete Button: :ref:`example_class_template_group`

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Column: primary record
''''''''''''''''''''''

If the columns `<name>%d` are real columns on the primary table, saving and delete (=empty string) are done automatically.
E.g. if there are upto five elements `grade1, ..., grade5` and the user inputs only the first three, the remaining will be set
to an empty string.

Column: non primary record
''''''''''''''''''''''''''

Additional logic is required to load, update, insert and/or delete slave records.

Load
;;;;

On each native *FormElement* of the *templateGroup* define a SQL query in the *FormElement.value* field. The query has to
select **all** values of all possible existing copies of the *FormElement* - therefore the exclamation mark is necessary.
Also define the order. E.g. *FormElement.value*::

   {{!SELECT street FROM Address WHERE personId={{id}} ORDER BY id}}

Insert / Update / Delete
;;;;;;;;;;;;;;;;;;;;;;;;

Add an *action* record, type='afterSave', and assign the record to the given *templateGroup*.

In the parameter field define: ::

		slaveId = {{SELECT id FROM Address WHERE personId={{id}} ORDER BY id LIMIT %D,1}}
		sqlHonorFormElements = city%d, street%d
		sqlUpdate = {{UPDATE Address SET city='{{city%d:FE:alnumx:s}}', street='{{street%d:FE:alnumx:s}}'  WHERE id={{slaveId}} LIMIT 1}}
		sqlInsert = {{INSERT INTO Address (`personId`, `city`, `street`) VALUES ({{id}}, '{{city%d:FE:alnumx:s}}' , '{{street%d:FE:alnumx:s}}') }}
		sqlDelete = {{DELETE FROM Address WHERE id={{slaveId}} LIMIT 1}}

The `slaveId` needs attention: the placeholder `%d` starts always at 1. The `LIMIT` directive starts at 0 - therefore
use `%D` instead of `%d`, cause `%D` is always one below `%d` - but can **only** be used on the action element.

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Class: Native
-------------

Fields:

+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
| Name          | Type                        | Description                                                                                       |
+===============+=============================+===================================================================================================+
| id            | int                         |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
| formId        | int                         |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|feIdContainer  | int                         |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|enabled        | enum('yes'|'no')            |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|dynamicUpdate  | enum('yes'|'no')            | In the browser, *FormElements* with "dynamicUpdate='yes'"  will be updated depending on user      |
|               |                             | input. :ref:`dynamic-update`                                                                      |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|name           | string                      |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|label          | string                      | Label of *FormElement*. Depending on layout model, left or on top of the *FormElement*            |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|mode           | enum('show', 'readonly',    | *Show*: regular user input field. This is the default.                                            |
|               | 'required',                 | *Required*: User has to specify a value. Typically, an <empty string> represents 'no value'.      |
|               | 'disabled' )                | *Readonly*: user can't change any data. Data not saved.                                           |
|               |                             | *Disabled*: *FormElement* is not visible.                                                         |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|modeSql        | `select` statement with     | A value given here overwrites the setting from `mode`. Most usefull with :ref:`dynamic-update`.   |
|               | a value like in `mode`      | E.g.: {{SELECT IF( '{{otherFunding:FR:alnumx}}'='yes' ,'show', 'hidden' }}                        |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|class          | enum('native', 'action',    | Details below.                                                                                    |
|               | 'container')                |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|type           | enum('checkbox', 'date', 'time', 'datetime',  'dateJQW', 'datetimeJQW', 'extra', 'gridJQW', 'text', 'editor', 'note',           |
|               | 'password', 'radio', 'select', 'subrecord', 'upload', 'fieldset', 'pill', 'beforeLoad', 'beforeSave',                           |
|               | 'beforeInsert', 'beforeUpdate', 'beforeDelete', 'afterLoad', 'afterSave', 'afterInsert', 'afterUpdate', 'afterDelete',          |
|               | 'sendMail')                                                                                                                     |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
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|encode         | 'none', 'specialchar'       | With 'specialchar' (default) the chars <>"'& will be encoded to their htmlentity.                 |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
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|checkType      | enum('min|max', 'pattern',  |                                                                                                   |
|               | 'number', 'email')          |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|checkPattern   | 'regexp'                    |If $checkType=='pattern': pattern to match                                                         |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|onChange       | string                      |List of *FormElement*-names of current form, separated by ', ', If one of the named *FormElements* |
|               |                             | change, reload own data / status / mode                                                           |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|ord            | string                      | Display order of *FormElements* ('order' is a reserved keyword)                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|tabindex       | string                      |HTML tabindex attribute                                                                            |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|size           | string                      |Visible length of input element. Might be ommited, depending on the choosen form layout.           |
|               |                             |Format: <width>,<height> (in characters)                                                           |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|bsLabelColumns | string                      | Number of bootstrap grid columns for label. By default empty, value inherits from the form.       |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|bsInputColumns | string                      | Number of bootstrap grid columns for input. By default empty, value inherits from the form.       |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|bsNoteColumns  | string                      | Number of bootstrap grid columns for note. By default empty, value inherits from the form.        |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|maxLength      | string                      |Maximum characters for input.                                                                      |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|note           | string                      |Note of *FormElement*. Depending on layout model, right or below of the *FormElement*.             |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|tooltip        | text                        |Display this text as tooltip on mouse over.                                                        |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|placeholder    | string                      |Text, displayed inside the input element in light grey.                                            |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|clientJs       | text                        |Javascript called on 'on change' *FormElement*                                                     |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|value          | text                        |Default value                                                                                      |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|sql1           | text                        |SQL query                                                                                          |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|parameter      | text                        |Might contain misc parameter. Depends on the type of *FormElement*.                                |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|feGroup        | string                      | Comma-separated list of Typo3 FE Group ID. NOT SURE IF THIS WILL BE IMPLEMENTED. Native           |
|               |                             | *FormElements*, fieldsets and pills can be assigned to feGroups. Group status: show, hidden,      |
|               |                             | disabled. Group Access: FE-Groups. User will be assigned to FE-Groups and the form definition     |
|               |                             | reference such FE-groups. Easy way of granting permission.                                        |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|deleted        | string                      | 'yes'|'no'.                                                                                       |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|modified       | timestamp                   |updated automatically through stored procedure                                                     |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|created        | datetime                    |set once through QFQ                                                                               |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+

.. _fe-parameter-attributes:

Attributes defined in the parameter field
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

See also at specific *FormElement* definitions.

+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| Name                   | Type   | Note                                                                                                     |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-pattern-error     | string | Pattern violation: Text for error message used for all FormElements of current form                      |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-required-error    | string | Required violation: Text for error message used for all FormElements of current form                     |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-match-error       | string | Match violation: Text for error message used for all FormElements of current form                        |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-error             | string | If none specific is defined: Text for error message used for all FormElements of current form            |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| htmlBefore             | string | HTML Code wrapped before the complete *FormElement*                                                      |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| htmlAfter              | string | HTML Code wrapped after the complete *FormElement*                                                       |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| wrapRow                | string | If specified, skip default wrapping (`<div class='col-md-?>`). Instead the given string is used.         |
+------------------------+--------+                                                                                                          |
| wrapInput              | string |                                                                                                          |
+------------------------+--------+                                                                                                          |
| wrapInput              | string |                                                                                                          |
+------------------------+--------+                                                                                                          |
| wrapNote               | string |                                                                                                          |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+

Effect matrix
^^^^^^^^^^^^^

+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| Attribute        | checkbox | dateJQW | datetimeJQW |  gridJQW | extra  | text  | note | password | radio | select | subrecord | timeJQW | upload | editor |
+==================+==========+=========+=============+==========+========+=======+======+==========+=======+========+===========+=========+========+========+
|id                |Internal id                                                                                                                              |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|formId            |Form                                                                                                                            |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|containerId       |Assign the *FormElement* to user defined fieldSet or pill                                                                       |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|enabled           |*FormElement* is active or not                                                                                                  |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|name              |Name of a column of the primary table. *FormElements* with a corresponding table will be saved automatically.                   |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|label             |Label shown to the user.                                                                                                        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|mode              |show, readonly, required, lock, disable.                                                                                        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|class             |native                                                                                                                          |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|type              | checkbox | dateJQW | datetimeJQW |  gridJQW | extra  | text  | note | password | radio | select | subrecord | timeJQW | upload |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|checkType         |          |   -     |   -         |          |        |   -   |      |   -      |       |        |           |   -     |        |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|checkPattern      |          |   -     |   -         |          |        |   -   |      |   -      |       |        |           |   -     |        |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|onChange          |   -      |   -     |   -         |          |        |   -   |      |   -      |   -   |   -    |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|ord               |   -      |   -     |   -         |   -      |   -    |   -   |   -  |   -      |   -   |   -    |   -       |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|tabindex          |   -      |   -     |   -         |   -      |   -    |   -   |   -  |   -      |   -   |   -    |   -       |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|size              |   -      |         |             |          |        |   -   |      |   -      |   -   |   -  2 |           |   -     |   -  ? |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|maxLength         |   1      |         |             |          |        |   -   |      |   -      |   - 1 |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|note              |   -      |   -     |   -         |          |        |   -   |   -  |   -      |   -   |   -    |   -       |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|tooltip           |   -      |   -     |   -         |          |        |   -   |      |   -      |   -   |   -    |           |   -     |   -    |   ?    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|placeholder       |          |   -     |   -         |          |        |   -   |      |          |       |        |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|clientJs          |          |   -     |   -         |   -      |        |   -   |      |   -      |   -   |   -    |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|value             |   -      |   -     |   -         |   -      |   -    |   -   |   -  |   -      |   -   |   -    |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|sql1              |?                                                                                                                                        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|*Additional attributes in Field 'parameter'. Typically in key=value format.*                                                                                |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| type             | checkbox | dateJQW | datetimeJQW | gridJQW  | extra  | text  | note | password | radio | select | subrecord | timeJQW | upload | editor |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| accept           |?                                                                                                                                        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| alt              |?                                                                                                                               |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| autocomplete     |          |   -     |   -         |          |        |   -   |      |          |       |        |           |   -     |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| autofocus        |   -      |   -     |   -         |          |        |   -   |      |   -      |   -   |   -    |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| checkBoxMode     |   -      |   -     |             |          |        |       |      |          |       |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| checked          |   -      |         |             |          |        |   -   |      |          |   -   |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| unchecked        |   -      |         |             |          |        |   -   |      |          |   -   |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| label2           |   -      |         |             |          |        |       |      |          |   -   |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| itemList         |   -      |         |             |          |        |       |      |          |   -   |   -    |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| emptyItemAtStart |          |         |             |          |        |       |      |          |       |   -    |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| emptyItemAtEnd   |          |         |             |          |        |       |      |          |       |   -    |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| emptyHide        |          |         |             |          |        |       |      |          |       |   -    |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| retype           |          | -       | -           |          |        | -     |      | -        |       |        |           | -       |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| accept           |          |         |             |          |        |       |      |          |       |        |           |         |   -  3 |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| slaveId          |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| fileDestination  |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| sqlBefore        |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| sqlInsert        |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| sqlDelete        |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| sqlAfter         |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+

* 1: A line break created every <size> elements. Easy way to make checkboxes or radio vertical instead of horizontal.
* 2: Any number >1 makes the 'select' input 'multiple' ready.
* See: https://www.w3.org/TR/html5/forms.html#file-upload-state-(type=file)

* All 'native' *FormElements* like 'input', 'checkbox', ...

'autofocus': The first *FormElement* with this attribute will get the focus after form load. If there is no such attribute
 given to any *FormElement*, the attribute will be automatically assigned to the first editable *FormElement*.

To disable 'autofocus' on a form, set 'autofocus=0' on the first editable *FormElement*.

Note: If there are multiple pills defined on a form, only the first pill will be set with 'autofocus'.

Type: checkbox
^^^^^^^^^^^^^^

Checkboxes can be rendered in mode:

* *single*:

  * One column in a table corresponds to one checkbox.
  * The value for statuses *checked* and *unchecked* are free to choose.
  * This mode is selected, if a) *checkBoxMode* = single, or b) *checkBoxMode* is missing **and** the number of fields of the column definition is <3.
  * *FormElement.parameter*:

    * *checkBoxMode* = single (optional)
    * *checked* = <value> (optional, the value which represents 'checked')

      * If *checked* is empty or missing: If *type* = 'enum' or 'set', get first item of the definition. If *type* = string, get default.

    * *unchecked* = <value> (optional, the value which represents 'unchecked')

      * If *unchecked* is empty or missing: If *type* = 'enum' or 'set', get second item of checked. If *type* = 'string', get ''.

    * *label2* = <value>       (Text right beside checkbox) (optional)


* *multi*:

  * One column in a table represents multiple checkboxes. This is typically useful for the column type *set*.
  * The value for status *checked* are free to choose, the value for status *unchecked* is always the empty string.
  * Each field key (or the corresponding value from the key/value pair) will be rendered right beside the checkbox.
  * *FormElement.parameter*

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    * *checkBoxMode* = multi
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    * *itemList* - E.g.:

      * ``itemList=red,blue,orange``
      * ``itemList=1:red,2:blue,3:orange``

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  * *FormElement.sql1* = ``{{!SELECT id, value FROM someTable}}``
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  * *FormElement.maxlength* - vertical or horizontal alignment:

     * Value: '', 0, 1 - The check boxes will be aligned vertical.
     * Value: >1 - The  check boxes will be aligned horizontal, with a linebreak every 'value' elements.

* *FormElement.parameter*:

  * *emptyHide*: Existence of this item hides an entry with an empty string. This is useful for e.g. Enums, which have an empty
    entry, but the empty value should not be selectable.
  * *emptyItemAtStart*: Existence of this item inserts an empty entry at the beginning of the selectlist.
  * *emptyItemAtEnd*: Existence of this item inserts an empty entry at the end of the selectlist.
  * *buttonClass*: Instead of the plain HTML  checkbox fields, Bootstrap
    `buttons <http://getbootstrap.com/javascript/#buttons-checkbox-radio>`_. are rendered as `checkbox` elements. Use
    one of the following `classes <http://getbootstrap.com/css/#buttons-options>`_:
    * `btn-default` (default, grey),
    * `btn-primary` (blue),
    * `btn-success` (green),
    * `btn-info` (light blue),
    * `btn-warning` (orange),
    * `btn-danger` (red).
    With a given *buttonClass*, all buttons (=radios) are rendered horizontal. A value in *FormElement.maxlength* has no effect.

* *No preselection*:

  * If a form is in 'new' mode and if there is a default value configured on a table column, such a value is shown by default.
    There might be situations, where the user should be forced to select a value (e.g. specifying the gender). An unwanted
    default value can be suppressed by specifying an explicit definition on the FormElement field `value`::

      {{<columnname>:RZ}}

    For existing records the shown value is as expected the value of the record. For new records, it's the value `0`,
    which is typically not one of the ENUM / SET values and therefore nothing is selected.


Type: date
^^^^^^^^^^

* Range datetime: '1000-01-01' to '9999-12-31' or '0000-00-00'. (http://dev.mysql.com/doc/refman/5.5/en/datetime.html)
* Optional:

  * *FormElement.parameter.dateFormat*: yyyy-mm-dd | dd.mm.yyyy

Type: datetime
^^^^^^^^^^^^^^

* Range datetime: '1000-01-01 00:00:00' to '9999-12-31 23:59:59' or '0000-00-00 00:00:00'. (http://dev.mysql.com/doc/refman/5.5/en/datetime.html)
* Optional:

  * *FormElement.parameter*:

    * *dateFormat*: yyyy-mm-dd | dd.mm.yyyy
    * *showSeconds*: 0|1 - shows the seconds. Independent if the user specifies seconds, they are displayed '1' or not '0'.
    * *showZero*: 0|1 - For an empty timestamp, With '0' nothing is displayed. With '1' the string '0000-00-00 00:00:00' is displayed.

Type: extra
^^^^^^^^^^^

* Element is not shown in the browser.
* The element can be used to define / precalculate values for a column, which do not already exist as a native *FormElement*.
* The element is build / computed on form load and saved alongside with the SIP parameter of the current form.
* Access the value without specifying any store (default store priority is sufficient).

Type: text
^^^^^^^^^^

* General input for text and number.
* *FormElement.size*:

  * <number>:  width of input element in characters. Lineheight = 1.
  * <cols>,<rows>: input element = textarea, width=<cols>, height=<rows>

* *FormElement.parameter*:

  * *retype* = 1 (optional): Current input element will be rendered twice. The form can only submitted if both elements are equal.
  * *retypeLabel* =<text> (optional): The label of the second element.
  * *retypeNote* =<text> (optional): The note of the second element.
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  * *characterCountWrap* = <text1>|<text2> (optional). Displays a character counter below the input/textarea element. If
    `text1` / `text2` is missing, just display `<current>/</max>`. Customization: `characterCountWrap=<div class=qfq-cc-style>Count: |</div>`
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  * Also check the  :ref:`fe-parameter-attributes` *data-...-error* to customize error messages shown by the validator.

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Type Ahead
''''''''''

Activating `typeahead` functionality offers an instant lookup of data and displaying them to the user, while the user is
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typing, a drop-down box offers the results. As datasource the regular SQL connection or a LDAP query can be used.
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With every keystroke (starting from the *typeAheadMinLength* characters), the already typed value will be transmitted to
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the server, the lookup will be performed and the result, upto *typeAheadLimit* entries, are displayed as a drop-down box.
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* *FormElement.parameter*:

  * *typeAheadLimit* = <number>. Max numbers of result records to be shown. Default is 20.
  * *typeAheadMinLength* = <number>. Minimum length to type before the first lookup starts.

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Depending of the `typeahead` setup, the given FormElement will contain the displayed `value` or `id` (if an id/value dict is
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configured).

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Configuration via Form / FormElement
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

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All of the `typeAhead*` (except `typeAheadLdap`) and `ldap*` parameter can be specified either in
*Form.parameter* or in *FormElement.parameter*.
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SQL
;;;

* *FormElement.parameter*:

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  * *typeAheadSql* = `SELECT ... AS 'id', ... AS 'value' WHERE name LIKE ? OR firstName LIKE ? LIMIT 100`
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    * If there is only one column in the SELECT statement, that one will be used and there is no dict (key/value pair).
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    * If there is no column `id` or no column `value`, than the first column becomes `id` and the second column becomes `value`.
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    * The query will be fired as a 'prepared statement'.
    * The value, typed by the user, will be replaced on all places where a `?` appears.
    * All `?` will be automatically surrounded by '%'. Therefore wildcard search is implemented: `... LIKE '%<?>%' ...`

LDAP
;;;;

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See :ref:`LDAP_Typeahead`
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Type: editor
^^^^^^^^^^^^

* TinyMCE (https://www.tinymce.com, community edition) is used as the QFQ Rich Text Editor.
* The content will be saved as HTML inside the database.
* All configuration and plugins will be configured via the 'parameter' field. Just prepend the word 'editor-' in front
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  of each TinyMCE keyword. Check possible options under:

  * https://www.tinymce.com/docs/configure/,
  * https://www.tinymce.com/docs/plugins/,
  * https://www.tinymce.com/docs/advanced/editor-control-identifiers/#toolbarcontrols

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* Bars:

  * Top: *menubar* - by default hidden.
  * Top: *toolbar* - by default visible.
  * Bottom: *statusbar* - by default hidden, exception: *min_height* and *max_height* are given via size parameter.


* The default setting in *FormElement.parameter* is::

    editor-plugins=code link searchreplace table textcolor textpattern visualchars
    editor-toolbar=code searchreplace undo redo | styleselect link table | fontselect fontsizeselect | bullist numlist outdent indent | forecolor backcolor bold italic editor-menubar=false
    editor-statusbar=false

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* To deactivate the surrouding `<p>` tag, configure in *FormElement.parameter*::

     editor-forced_root_block=false

  This might have impacts on the editor. See https://www.tinymce.com/docs/configure/content-filtering/#forced_root_block

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* *FormElement.size*:

  * <min_height>,<max_height>: in pixels, including top and bottom bars. E.g.: 300,600


Type: note
^^^^^^^^^^

An FormElement without any 'input' functionality -just to show some text. Use the typical fields 'label', 'value' and
'note' to be displayed in the corresponding three standard columns.

Type: password
^^^^^^^^^^^^^^

* Like a `text` element, but every character is shown as an asterisk.

Type: radio
^^^^^^^^^^^

* Radio Buttons will be built from one of three sources:

  1. 'sql1': E.g. *{{!SELECT type AS label FROM car }}* or *{{!SELECT type AS label, typeNr AS id FROM car}}* or *{{!SHOW tables}}*.

    * Resultset format 'named': column 'label' and optional a column 'id'.
    * Resultset format 'index':

      * One column in resultset >> first column represents *label*
      * Two or more columns in resultset >> first column represents *id* and second column represents *label*.

  2. *FormElement.parameter*:

    * *itemList* = `<attribute>` E.g.: *itemList=red,blue,orange* or *itemList=1:red,2:blue:3:orange*

  3. Definition of the *enum* or *set* field (only labels, ids are not possible).


* *FormElement.maxlength* = `<value>`

   * Applies only to 'plain' radio elements (not the Bootstrap 'buttonClass' from below)
   * *vertical* or *horizontal* alignment:

     * `<value>`: '', 0, 1 - The radios will be aligned *vertical*.
     * `<value>`: >1 - The readios will be aligned *horizontal*, with a linebreak every 'value' elements.


* *FormElement.parameter*:

  * *emptyHide*: Existence of this item hides an entry with an empty string. This is useful for e.g. Enums, which have an empty
    entry, but the empty value should not be selectable.
  * *emptyItemAtStart*: Existence of this item inserts an empty entry at the beginning of the selectlist.
  * *emptyItemAtEnd*: Existence of this item inserts an empty entry at the end of the selectlist.
  * *buttonClass*: Instead of the plain radio fields, Bootstrap
    `buttons <http://getbootstrap.com/javascript/#buttons-checkbox-radio>`_. are rendered as `radio` elements. Use
    one of the following `classes <http://getbootstrap.com/css/#buttons-options>`_:
    * `btn-default` (default, grey),
    * `btn-primary` (blue),
    * `btn-success` (green),
    * `btn-info` (light blue),
    * `btn-warning` (orange),
    * `btn-danger` (red).
    With a given *buttonClass*, all buttons (=radios) are rendered horizontal. A value in *FormElement.maxlength* has no effect.

* *No preselection*:

  * If there is a default configured on a table column, such a value is selected by default. If the user should actively
    choose an option, the 'preselection' can be omitted by specifying an explicit definition on the FormElement field `value`::

      {{<columnname>:RZ}}

    For existing records the shown value is as expected the value of the record. For new records, it's the value `0`,
    which is typically not one of the ENUM values and therefore nothing is selected.

Type: select
^^^^^^^^^^^^

* Select lists will be built from one of three sources:

  * 'sql1': E.g. *{{!SELECT type AS label FROM car }}* or *{{!SELECT type AS label, typeNr AS id FROM car}}* or *{{!SHOW tables}}*.

    * Resultset format 'named': column 'label' and optional a column 'id'.
    * Resultset format 'index':

      * One column in resultset >> first column represents *label*
      * Two or more columns in resultset >> first column represents *id* and second column represents *label*.

  * *FormElement.parameter*:

    * *itemList* = `<attribute>` - E.g.: *itemList=red,blue,orange* or *itemList=1:red,2:blue:3:orange*

  * Definition of the *enum* or *set* field (only labels, ids are not possible).

* *FormElement.size*: `<value>`

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  * `<value>`: <empty>|0|1: drop-down list.
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</