egroupware/etemplate/js/et2_widget_template.js

198 lines
5.4 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 $Id$
*/
/*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.
*
* @augments et2_DOMWidget
*/
var et2_template = (function(){ "use strict"; return et2_DOMWidget.extend(
{
attributes: {
"template": {
"name": "Template",
"type": "string",
"description": "Name / ID of template with optional cache-buster ('?'+filemtime of template on server)",
"default": et2_no_init
},
"group": {
// TODO: Not implemented
"name": "Group",
"description":"Not implemented",
//"default": 0
"default": et2_no_init
},
"version": {
"name": "Version",
"type": "string",
"description": "Version of the template"
},
"lang": {
"name": "Language",
"type": "string",
"description": "Language the template is written in"
},
"content": {
"name": "Content index",
"default": et2_no_init,
"description": "Used for passing in specific content to the template other than what it would get by ID."
},
url: {
name: "URL of template",
type: "string",
description: "full URL to load template incl. cache-buster"
}
},
createNamespace: true,
/**
* Initializes this template widget as a simple container.
*
* @memberOf et2_template
* @param {et2_widget} _parent
* @param {object} _attrs
*/
init: function(_parent, _attrs) {
// Set this early, so it's available for creating namespace
if(_attrs.content)
{
this.content = _attrs.content;
}
this._super.apply(this, arguments);
this.div = document.createElement("div");
// Deferred object so we can load via AJAX
this.loading = jQuery.Deferred();
if (this.id != "" || this.options.template)
{
var parts = (this.options.template || this.id).split('?');
var cache_buster = parts.length > 1 ? parts.pop() : null;
var template_name = parts.pop();
// Check to see if XML is known
var xml = null;
var templates = etemplate2.prototype.templates; // use global eTemplate cache
if(!(xml = templates[template_name]))
{
// Check to see if ID is short form --> prepend parent/top-level name
if(template_name.indexOf('.') < 0)
{
var root = _parent ? _parent.getRoot() : null;
var top_name = root && root._inst ? root._inst.name : null;
if (top_name && template_name.indexOf('.') < 0) template_name = top_name+'.'+template_name;
}
xml = templates[template_name];
if(!xml)
{
// Ask server
var url = this.options.url;
if (!this.options.url)
{
var splitted = template_name.split('.');
// use template base url from initial template, to continue using webdav, if that was loaded via webdav
url = this.getRoot()._inst.template_base_url + splitted.shift() + "/templates/default/" +
splitted.join('.')+ ".xet" + (cache_buster ? '?download='+cache_buster : '');
}
// if server did not give a cache-buster, fall back to current time
if (url.indexOf('?') == -1) url += '?download='+(new Date).valueOf();
if(this.options.url || splitted.length)
{
et2_loadXMLFromURL(url, function(_xmldoc) {
// Scan for templates and store them
for(var i = 0; i < _xmldoc.childNodes.length; i++) {
var template = _xmldoc.childNodes[i];
if(template.nodeName.toLowerCase() != "template") continue;
templates[template.getAttribute("id")] = template;
}
// Read the XML structure of the requested template
if (typeof templates[template_name] != 'undefined') this.loadFromXML(templates[template_name]);
// Update flag
this.loading.resolve();
}, this);
}
return;
}
}
if(xml !== null && typeof xml !== "undefined")
{
this.egw().debug("log", "Loading template from XML: ", template_name);
this.loadFromXML(xml);
// Don't call this here - done by caller, or on whole widget tree
//this.loadingFinished();
// But resolve the promise
this.loading.resolve();
}
else
{
this.egw().debug("warn", "Unable to find XML for ", template_name);
this.loading.reject();
}
}
else
{
// No actual template
this.loading.resolve();
}
},
/**
* Override parent to support content attribute
* Templates always have ID set, but seldom do we want them to
* create a namespace based on their ID.
*/
checkCreateNamespace: function() {
if(this.content)
{
var old_id = this.id;
this.id = this.content;
this._super.apply(this, arguments);
this.id = old_id;
}
},
getDOMNode: function() {
return this.div;
},
/**
* Override to return the promise for deferred loading
*/
doLoadingFinished: function() {
// Apply parent now, which actually puts into the DOM
this._super.apply(this, arguments);
// Fire load event when done loading
this.loading.done(jQuery.proxy(function() {$j(this).trigger("load");},this.div));
// Not done yet, but widget will let you know
return this.loading.promise();
}
});}).call(this);
et2_register_widget(et2_template, ["template"]);