mirror of
https://github.com/EGroupware/egroupware.git
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798 lines
19 KiB
JavaScript
798 lines
19 KiB
JavaScript
/**
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* eGroupWare eTemplate2 - JS Widget base class
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @subpackage api
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* @link http://www.egroupware.org
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* @author Andreas Stöckel
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* @copyright Stylite 2011
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* @version $Id$
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*/
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"use strict";
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/*egw:uses
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jsapi.egw;
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et2_core_xml;
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et2_core_common;
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et2_core_inheritance;
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et2_core_arrayMgr;
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*/
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/**
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* The registry contains all XML tag names and the corresponding widget
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* constructor.
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*/
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var et2_registry = {};
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/**
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* Registers the widget class defined by the given constructor and associates it
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* with the types in the _types array.
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*/
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function et2_register_widget(_constructor, _types)
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{
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// Iterate over all given types and register those
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for (var i = 0; i < _types.length; i++)
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{
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var type = _types[i].toLowerCase();
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// Check whether a widget has already been registered for one of the
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// types.
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if (et2_registry[type])
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{
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et2_debug("warn", "Widget class registered for " + type +
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" will be overwritten.");
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}
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et2_registry[type] = _constructor;
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}
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}
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/**
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* Creates a widget registered for the given tag-name. If "readonly" is listed
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* inside the attributes, et2_createWidget will try to use the "_ro" type of the
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* widget.
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*
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* @param _name is the name of the widget with which it is registered. If the
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* widget is not found, an et2_placeholder will be created.
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* @param _attrs is an associative array with attributes. If not passed, it will
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* default to true.
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* @param _parent is the parent to which the element will be attached. If _parent
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* is not passed, it will default to null. Then you have to attach the element
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* to a parent using the addChild or insertChild method.
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*/
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function et2_createWidget(_name, _attrs, _parent)
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{
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if (typeof _attrs == "undefined")
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{
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_attrs = {};
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}
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if (typeof _parent == "undefined")
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{
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_parent = null;
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}
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// Parse the "readonly" and "type" flag for this element here, as they
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// determine which constructor is used
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var nodeName = _attrs["type"] = _name;
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var readonly = _attrs["readonly"] =
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typeof _attrs["readonly"] == "undefined" ? false : _attrs["readonly"];
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// Get the constructor - if the widget is readonly, use the special "_ro"
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// constructor if it is available
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var constructor = typeof et2_registry[nodeName] == "undefined" ?
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et2_placeholder : et2_registry[nodeName];
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if (readonly && typeof et2_registry[nodeName + "_ro"] != "undefined")
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{
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constructor = et2_registry[nodeName + "_ro"];
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}
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// Do an sanity check for the attributes
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constructor.prototype.generateAttributeSet(_attrs);
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// Create the new widget and return it
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return new constructor(_parent, _attrs);
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}
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/**
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* The et2 widget base class.
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*/
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var et2_widget = Class.extend({
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attributes: {
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"id": {
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"name": "ID",
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"type": "string",
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"description": "Unique identifier of the widget"
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},
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"no_lang": {
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"name": "No translation",
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"type": "boolean",
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"default": false,
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"description": "If true, no translations are made for this widget"
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},
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/**
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* Ignore the "span" property by default - it is read by the grid and
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* other widgets.
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*/
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"span": {
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"ignore": true
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},
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/**
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* Ignore the "type" tag - it is read by the "createElementFromNode"
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* function and passed as second parameter of the widget constructor
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*/
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"type": {
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"ignore": true
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},
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/**
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* Ignore the readonly tag by default - its also read by the
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* "createElementFromNode" function.
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*/
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"readonly": {
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"ignore": true
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}
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},
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// Set the legacyOptions array to the names of the properties the "options"
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// attribute defines.
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legacyOptions: [],
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/**
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* Set this variable to true if this widget can have namespaces
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*/
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createNamespace: false,
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/**
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* The init function is the constructor of the widget. When deriving new
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* classes from the widget base class, always call this constructor unless
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* you know what you're doing.
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*
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* @param _parent is the parent object from the XML tree which contains this
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* object. The default constructor always adds the new instance to the
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* children list of the given parent object. _parent may be NULL.
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* @param _attrs is an associative array of attributes.
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*/
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init: function(_parent, _attrs) {
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// Check whether all attributes are available
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if (typeof _parent == "undefined")
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{
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_parent = null;
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}
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if (typeof _attrs == "undefined")
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{
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_attrs = {};
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}
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// Initialize all important parameters
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this._mgrs = {};
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this._inst = null;
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this._children = [];
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this._type = _attrs["type"];
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this.id = _attrs["id"];
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// Add this widget to the given parent widget
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this._parent = _parent;
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if (_parent != null)
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{
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this._parent.addChild(this);
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}
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// The supported widget classes array defines a whitelist for all widget
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// classes or interfaces child widgets have to support.
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this.supportedWidgetClasses = [et2_widget];
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if (_attrs["id"])
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{
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// Create a namespace for this object
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if (this.createNamespace)
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{
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this.checkCreateNamespace();
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}
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}
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// Add all attributes hidden in the content arrays to the attributes
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// parameter
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this.transformAttributes(_attrs);
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// Create a local copy of the options object
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this.options = et2_cloneObject(_attrs);
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},
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/**
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* The destroy function destroys all children of the widget, removes itself
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* from the parents children list.
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* In all classes derrived from et2_widget ALWAYS override the destroy
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* function and remove ALL references to other objects. Also remember to
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* unbind ANY event this widget created and to remove all DOM-Nodes it
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* created.
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*/
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destroy: function() {
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// Call the destructor of all children
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for (var i = this._children.length - 1; i >= 0; i--)
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{
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this._children[i].free();
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}
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// Remove this element from the parent
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if (this._parent !== null)
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{
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this._parent.removeChild(this);
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}
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// Free the array managers if they belong to this widget
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for (var key in this._mgrs)
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{
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if (this._mgrs[key] && this._mgrs[key].owner == this)
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{
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this._mgrs[key].free();
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}
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}
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},
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/**
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* Creates a copy of this widget. The parameters given are passed to the
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* constructor of the copied object. If the parameters are omitted, _parent
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* is defaulted to null
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*/
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clone: function(_parent) {
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// Default _parent to null
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if (typeof _parent == "undefined")
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{
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_parent = null;
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}
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// Create the copy
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var copy = new (this.constructor)(_parent, this.options);
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// Assign this element to the copy
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copy.assign(this);
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return copy;
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},
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assign: function(_obj) {
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if (typeof _obj._children == "undefined")
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{
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et2_debug("log", "Foo!");
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}
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// Create a clone of all child elements of the given object
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for (var i = 0; i < _obj._children.length; i++)
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{
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_obj._children[i].clone(this);
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}
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// Copy a reference to the content array manager
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this.setArrayMgrs(_obj.mgrs);
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},
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/**
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* Returns the parent widget of this widget
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*/
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getParent: function() {
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return this._parent;
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},
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/**
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* Returns the list of children of this widget.
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*/
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getChildren: function() {
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return this._children;
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},
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/**
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* Returns the base widget
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*/
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getRoot: function() {
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if (this._parent != null)
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{
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return this._parent.getRoot();
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}
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else
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{
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return this;
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}
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},
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/**
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* Inserts an child at the end of the list.
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*
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* @param _node is the node which should be added. It has to be an instance
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* of et2_widget
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*/
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addChild: function(_node) {
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this.insertChild(_node, this._children.length);
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},
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/**
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* Inserts a child at the given index.
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*
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* @param _node is the node which should be added. It has to be an instance
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* of et2_widget
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* @param _idx is the position at which the element should be added.
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*/
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insertChild: function(_node, _idx) {
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// Check whether the node is one of the supported widget classes.
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if (this.isOfSupportedWidgetClass(_node))
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{
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// Remove the node from its original parent
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if (_node._parent)
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{
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_node._parent.removeChild(_node);
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}
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_node._parent = this;
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this._children.splice(_idx, 0, _node);
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}
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else
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{
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et2_debug("error", this, "Widget is not supported by this widget class", _node);
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// throw("Widget is not supported by this widget class!");
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}
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},
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/**
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* Removes the child but does not destroy it.
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*/
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removeChild: function(_node) {
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// Retrieve the child from the child list
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var idx = this._children.indexOf(_node);
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if (idx >= 0)
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{
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// This element is no longer parent of the child
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_node._parent = null;
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this._children.splice(idx, 1);
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}
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},
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/**
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* Searches an element by id in the tree, descending into the child levels.
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*
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* @param _id is the id you're searching for
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*/
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getWidgetById: function(_id) {
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if (this.id == _id)
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{
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return this;
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}
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for (var i = 0; i < this._children.length; i++)
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{
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var elem = this._children[i].getWidgetById(_id);
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if (elem != null)
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{
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return elem;
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}
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}
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return null;
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},
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/**
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* Function which allows iterating over the complete widget tree.
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*
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* @param _callback is the function which should be called for each widget
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* @param _context is the context in which the function should be executed
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* @param _type is an optional parameter which specifies a class/interface
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* the elements have to be instanceOf.
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*/
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iterateOver: function(_callback, _context, _type) {
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if (typeof _type == "undefined")
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{
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_type = et2_widget;
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}
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if (this.isInTree() && this.instanceOf(_type))
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{
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_callback.call(_context, this);
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}
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for (var i = 0; i < this._children.length; i++)
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{
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this._children[i].iterateOver(_callback, _context, _type);
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}
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},
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/**
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* Returns true if the widget currently resides in the visible part of the
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* widget tree. E.g. Templates which have been cloned are not in the visible
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* part of the widget tree.
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*
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* @param _vis can be used by widgets overwriting this function - simply
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* write
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* return this._super(inTree);
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* when calling this function the _vis parameter does not have to be supplied.
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*/
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isInTree: function(_sender, _vis) {
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if (typeof _vis == "undefined")
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{
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_vis = true;
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}
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if (this._parent)
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{
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return _vis && this._parent.isInTree(this);
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}
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return _vis;
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},
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isOfSupportedWidgetClass: function(_obj)
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{
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for (var i = 0; i < this.supportedWidgetClasses.length; i++)
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{
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if (_obj.instanceOf(this.supportedWidgetClasses[i]))
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{
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return true;
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}
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}
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return false;
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},
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/**
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* The parseXMLAttrs function takes an XML DOM attributes object
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* and adds the given attributes to the _target associative array. This
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* function also parses the legacyOptions.
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*
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* @param _attrsObj is the XML DOM attributes object
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* @param _target is the object to which the attributes should be written.
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*/
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parseXMLAttrs: function(_attrsObj, _target, _proto) {
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// Check whether the attributes object is really existing, if not abort
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if (typeof _attrsObj == "undefined")
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{
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return;
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}
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// Iterate over the given attributes and parse them
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for (var i = 0; i < _attrsObj.length; i++)
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{
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var attrName = _attrsObj[i].name;
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var attrValue = _attrsObj[i].value;
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// Special handling for the legacy options
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if (attrName == "options")
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{
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// Parse the legacy options
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var splitted = et2_csvSplit(attrValue);
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for (var j = 0; j < splitted.length && j < _proto.legacyOptions.length; j++)
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{
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_target[_proto.legacyOptions[j]] = splitted[j];
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}
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}
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else
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{
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var mgr = this.getArrayMgr("content");
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if (mgr != null && typeof _proto.attributes[attrName] != "undefined")
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{
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var attr = _proto.attributes[attrName];
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// If the attribute is marked as boolean, parse the
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// expression as bool expression.
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if (attr.type == "boolean")
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{
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attrValue = mgr.parseBoolExpression(attrValue);
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}
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else
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{
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attrValue = mgr.expandName(attrValue);
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}
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}
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// Set the attribute
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_target[attrName] = attrValue;
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}
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}
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},
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/**
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* Apply the "modifications" to the element and translate attributes marked
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* with "translate: true"
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*/
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transformAttributes: function(_attrs) {
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// Apply the content of the modifications array
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if (this.id)
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{
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if (typeof this.id != "string")
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{
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console.log(this.id);
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}
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if(this.getArrayMgr("modifications"))
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{
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var data = this.getArrayMgr("modifications").getEntry(this.id);
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if (data instanceof Object)
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{
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for (var key in data)
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{
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if (!(data[key] instanceof Object))
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{
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_attrs[key] = data[key];
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}
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}
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}
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}
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}
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// Translate the attributes
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for (var key in _attrs)
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{
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if (_attrs[key] && typeof this.attributes[key] != "undefined")
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{
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if (this.attributes[key].translate === true ||
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(this.attributes[key].translate === "!no_lang" && !_attrs["no_lang"]))
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_attrs[key] = egw.lang(_attrs[key]);
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}
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}
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},
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createElementFromNode: function(_node) {
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var attributes = {};
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// Parse the "readonly" and "type" flag for this element here, as they
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// determine which constructor is used
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var _nodeName = attributes["type"] = _node.getAttribute("type") ?
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_node.getAttribute("type") : _node.nodeName.toLowerCase();
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var readonly = attributes["readonly"] =
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this.getArrayMgr("readonlys").isReadOnly(
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_node.getAttribute("id"), _node.getAttribute("readonly"),
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this.readonly);
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// Check to see if modifications change type
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var modifications = this.getArrayMgr("modifications");
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if(modifications && _node.getAttribute("id")) {
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var entry = modifications.getEntry(_node.getAttribute("id"));
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if(entry && entry.type)
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{
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_nodeName = attributes["type"] = entry.type
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}
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entry = null;
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}
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// Get the constructor - if the widget is readonly, use the special "_ro"
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// constructor if it is available
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var constructor = typeof et2_registry[_nodeName] == "undefined" ?
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et2_placeholder : et2_registry[_nodeName];
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if (readonly && typeof et2_registry[_nodeName + "_ro"] != "undefined")
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{
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constructor = et2_registry[_nodeName + "_ro"];
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}
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// Parse the attributes from the given XML attributes object
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this.parseXMLAttrs(_node.attributes, attributes, constructor.prototype);
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// Do an sanity check for the attributes
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constructor.prototype.generateAttributeSet(attributes);
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// Creates the new widget, passes this widget as an instance and
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// passes the widgetType. Then it goes on loading the XML for it.
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var widget = new constructor(this, attributes);
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// Load the widget itself from XML
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widget.loadFromXML(_node);
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return widget;
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},
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/**
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* Loads the widget tree from an XML node
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*/
|
|
loadFromXML: function(_node) {
|
|
// Load the child nodes.
|
|
for (var i = 0; i < _node.childNodes.length; i++)
|
|
{
|
|
var node = _node.childNodes[i];
|
|
var widgetType = node.nodeName.toLowerCase();
|
|
|
|
if (widgetType == "#comment")
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (widgetType == "#text")
|
|
{
|
|
if (node.data.replace(/^\s+|\s+$/g, ''))
|
|
{
|
|
this.loadContent(node.data);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Create the new element
|
|
this.createElementFromNode(node);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Called whenever textNodes are loaded from the XML tree
|
|
*/
|
|
loadContent: function(_content) {
|
|
},
|
|
|
|
/**
|
|
* Called when loading the widget (sub-tree) is finished. First when this
|
|
* function is called, the DOM-Tree is created. loadingFinished is
|
|
* recursively called for all child elements. Do not directly override this
|
|
* function but the doLoadingFinished function which is executed before
|
|
* descending deeper into the DOM-Tree
|
|
*/
|
|
loadingFinished: function() {
|
|
// Call all availble setters
|
|
this.initAttributes(this.options);
|
|
|
|
if (this.doLoadingFinished())
|
|
{
|
|
// Descend recursively into the tree
|
|
for (var i = 0; i < this._children.length; i++)
|
|
{
|
|
this._children[i].loadingFinished();
|
|
}
|
|
}
|
|
},
|
|
|
|
doLoadingFinished: function() {
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Sets all array manager objects - this function can be used to set the
|
|
* root array managers of the container object.
|
|
*/
|
|
setArrayMgrs: function(_mgrs) {
|
|
this._mgrs = et2_cloneObject(_mgrs);
|
|
},
|
|
|
|
/**
|
|
* Returns an associative array containing the top-most array managers.
|
|
*
|
|
* @param _mgrs is used internally and should not be supplied.
|
|
*/
|
|
getArrayMgrs: function(_mgrs) {
|
|
if (typeof _mgrs == "undefined")
|
|
{
|
|
_mgrs = {};
|
|
}
|
|
|
|
// Add all managers of this object to the result, if they have not already
|
|
// been set in the result
|
|
for (var key in this._mgrs)
|
|
{
|
|
if (typeof _mgrs[key] == "undefined")
|
|
{
|
|
_mgrs[key] = this._mgrs[key];
|
|
}
|
|
}
|
|
|
|
// Recursively applies this function to the parent widget
|
|
if (this._parent)
|
|
{
|
|
this._parent.getArrayMgrs(_mgrs);
|
|
}
|
|
|
|
return _mgrs;
|
|
},
|
|
|
|
/**
|
|
* Sets the array manager for the given part
|
|
*/
|
|
setArrayMgr: function(_part, _mgr) {
|
|
this._mgrs[_part] = _mgr;
|
|
},
|
|
|
|
/**
|
|
* Returns the array manager object for the given part
|
|
*/
|
|
getArrayMgr: function(_part) {
|
|
if (typeof this._mgrs[_part] != "undefined")
|
|
{
|
|
return this._mgrs[_part];
|
|
}
|
|
else if (this._parent)
|
|
{
|
|
return this._parent.getArrayMgr(_part);
|
|
}
|
|
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* Checks whether a namespace exists for this element in the content array.
|
|
* If yes, an own perspective of the content array is created. If not, the
|
|
* parent content manager is used.
|
|
*/
|
|
checkCreateNamespace: function() {
|
|
// Get the content manager
|
|
var mgrs = this.getArrayMgrs();
|
|
|
|
for (var key in mgrs)
|
|
{
|
|
var mgr = mgrs[key];
|
|
|
|
// Get the original content manager if we have already created a
|
|
// perspective for this node
|
|
if (typeof this._mgrs[key] != "undefined" && mgr.perspectiveData.owner == this)
|
|
{
|
|
mgr = mgr.parentMgr;
|
|
}
|
|
|
|
// Check whether the manager has a namespace for the id of this object
|
|
if (mgr.getEntry(this.id) instanceof Object)
|
|
{
|
|
// The content manager has an own node for this object, so
|
|
// create an own perspective.
|
|
this._mgrs[key] = mgr.openPerspective(this, this.id);
|
|
}
|
|
else
|
|
{
|
|
// The current content manager does not have an own namespace for
|
|
// this element, so use the content manager of the parent.
|
|
delete(this._mgrs[key]);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Sets the instance manager object (of type etemplate2, see etemplate2.js)
|
|
*/
|
|
setInstanceManager: function(_inst) {
|
|
this._inst = _inst;
|
|
},
|
|
|
|
/**
|
|
* Returns the instance manager
|
|
*/
|
|
getInstanceManager: function() {
|
|
if (this._inst != null)
|
|
{
|
|
return this._inst;
|
|
}
|
|
else if (this._parent)
|
|
{
|
|
return this._parent.getInstanceManager();
|
|
}
|
|
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* Returns the application for the template the widget is in.
|
|
* If a sub-template is used, this may be different from the current app.
|
|
*/
|
|
getTemplateApp: function() {
|
|
if(this._template_application)
|
|
{
|
|
return this._template_application;
|
|
}
|
|
else if(this._type == 'template' && this.id)
|
|
{
|
|
var parts = this.id.split(".",2);
|
|
return parts[0];
|
|
} else if (this.getParent()) {
|
|
this._template_application = this.getParent().getTemplateApp();
|
|
return this._template_application;
|
|
}
|
|
var app = egw.getAppName() == 'egroupware' ? 'phpgwapi' : egw.getAppName();
|
|
//console.warn("Unable to find template application, using %s", app);
|
|
return app;
|
|
}
|
|
});
|
|
|
|
|