egroupware_official/etemplate/js/et2_widget_template.js
2011-08-24 10:18:07 +00:00

147 lines
3.3 KiB
JavaScript

/**
* eGroupWare eTemplate2 - JS Template base class
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Andreas Stöckel
* @copyright Stylite 2011
* @version $Id$
*/
"use strict";
/*egw:uses
et2_core_xml;
et2_core_DOMWidget;
*/
/**
* Class which implements the "template" XET-Tag. When the id parameter is set,
* the template class checks whether another template with this id already
* exists. If yes, this template is removed from the DOM tree, copied and
* inserted in place of this template.
*
* TODO: Check whether this widget behaves as it should.
*/
var et2_template = et2_DOMWidget.extend({
attributes: {
"template": {
},
"group": {
},
"version": {
"name": "Version",
"type": "string",
"description": "Version of the template"
},
"lang": {
"name": "Language",
"type": "string",
"description": "Language the template is written in"
}
},
createNamespace: true,
/**
* Initializes this template widget as a simple container.
*/
init: function() {
this._super.apply(this, arguments);
this.proxiedTemplate = null;
this.isProxied = false;
this.isProxy = false;
this.div = document.createElement("div");
if (this.id != "")
{
this.createProxy();
}
},
createProxy: function() {
// Check whether a template with the given name already exists and
// is not a proxy.
var tmpl = this.getRoot().getWidgetById(this.id);
if (tmpl instanceof et2_template && tmpl.proxiedTemplate == null &&
tmpl != this)
{
// Detatch the proxied template from the DOM to and set its
// isProxied property to true
tmpl.makeProxied();
// Do not copy the id when cloning as this leads to infinit
// recursion
tmpl.options.id = "";
// Create a clone of the template and add it as child of this
// template (done by passing "this" to the clone function)
this.proxiedTemplate = tmpl.clone(this);
// Reset the "ignore" flag and manually copy the id
tmpl.options.id = this.id;
this.proxiedTemplate.id = tmpl.id;
this.proxiedTemplate.isProxy = true;
// Disallow adding any new node to this template
this.supportedWidgetClasses = [];
}
},
/**
* If the parent node is changed, either the DOM-Node of the proxied template
* or the DOM-Node of this template is connected to the parent DOM-Node.
*/
doLoadingFinished: function() {
// Check whether the parent implements the et2_IDOMNode interface.
if (this._parent && this._parent.implements(et2_IDOMNode)) {
var parentNode = this._parent.getDOMNode(this);
if (parentNode)
{
if (this.proxiedTemplate)
{
this.proxiedTemplate.setParentDOMNode(parentNode);
this.proxiedTemplate.loadingFinished();
return false;
}
else if (!this.isProxied && !this.isProxy)
{
this.setParentDOMNode(parentNode);
}
}
}
return true;
},
makeProxied: function() {
if (!this.isProxied)
{
this.detatchFromDOM();
this.div = null;
this.parentNode = null;
}
this.isProxied = true;
},
getDOMNode: function() {
return this.div;
},
isInTree: function(_sender) {
return this._super(this, !this.isProxied);
}
});
et2_register_widget(et2_template, ["template"]);