egroupware_official/etemplate/js/widget_browser.js

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/**
* EGroupware eTemplate2 widget browser
* View & play with et2 widgets - javascript
*
* @link http://www.egroupware.org
* @author Nathan Gray
* @copyright 2013 Nathan Gray
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage tools
* @version $Id$
*/
/**
* widget_browser shows a list of widgets, and allows you to view them one at a time.
* You can view and edit defined properties to see the effect.
*/
function widget_browser(list_div, widget_div)
{
// Initialize etemplate2
this.et2 = new etemplate2(widget_div, "etemplate::ajax_process_content");
// Normally this would be passed from app
var _data = {};
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// Create the basic widget container and attach it to the DOM
// Not really needed, but let's be consitent with et2
this.et2.widgetContainer = new et2_container(null);
this.et2.widgetContainer.setApiInstance(egw('etemplate', egw.elemWindow(this.et2.DOMContainer)));
this.et2.widgetContainer.setInstanceManager(this.et2);
this.et2.widgetContainer.setParentDOMNode(this.et2.DOMContainer);
this.et2.widgetContainer.setArrayMgrs(this.et2._createArrayManagers(_data));
// Set up UI
this.list_div = $j(list_div);
this.widget_div = $j(widget_div);
this.attribute_list = null;
// Create and popuplate the widget list
this._init_list();
}
/**
* Read the widget registry and create a list.
* The user can pick a widget, and we'll instanciate it.
*/
widget_browser.prototype._init_list = function()
{
var self = this;
// Create list
var list = $j(document.createElement('ul'))
.attr('id', 'widgets')
.click(function(e) {self.select_widget(e);})
.appendTo(this.list_div);
// Sort the registry
var types = [];
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for(var type in et2_registry)
{
types.push(type);
}
types.sort();
for(var i = 0; i < types.length; i++)
{
list.append('<li>'+types[i]+'</li>');
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}
// Build attribute table
attribute_table = $j(document.createElement('table'));
attribute_table.append('<thead class = "ui-widget-header"><td>'+egw().lang('Name')+"</td><td>"+egw().lang("Data type") +
"</td><td>"+egw().lang("Value") + "</td></thead>");
this.attribute_list = $j(document.createElement('tbody'))
.appendTo(attribute_table);
this.list_div.append(
$j(document.createElement('div'))
.attr('id', 'widget_attributes')
.append(attribute_table)
);
};
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/**
* User selected a widget from the list
*
* Create an instance of the widget, get its attributes, and display it.
*/
widget_browser.prototype.select_widget = function(e,f)
{
// UI prettyness - clear selected
$j(e.target).parent().children().removeClass("ui-state-active");
// Clear previous widget
if(this.widget)
{
this.et2.widgetContainer.removeChild(this.widget);
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this.widget.free();
this.widget = null;
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}
// Get the type of widget
var type = $j(e.target).text();
if(!type || e.target.nodeName != 'LI')
{
return;
}
// UI prettyness - show item as selected
$j(e.target).addClass('ui-state-active');
// Widget attributes
var attrs = {};
window.wb_widget = this.widget = et2_createWidget(type, attrs, this.et2.widgetContainer);
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this.widget.loadingFinished();
// Attribute list
this.attribute_list.empty();
if(this.widget !== null && this.widget.attributes)
{
for(var attr in this.widget.attributes)
{
if(this.widget.attributes[attr].ignore) continue;
this.create_attribute(attr, this.widget.attributes[attr])
.appendTo(this.attribute_list);
}
}
};
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/**
* Create the UI (DOM) elements for a single widget attribute
*
* @param name Name of the attribute
* @param settings attribute attributes (Human name, description, etc)
*/
widget_browser.prototype.create_attribute = function(name, settings)
{
var set_function_name = "set_"+name;
var row = $j(document.createElement("tr"))
.addClass(typeof this.widget[set_function_name] == 'function' ? 'ui-state-default':'ui-state-disabled')
// Human Name
.append($j(document.createElement('td'))
.text(settings.name)
)
// Data type
.append($j(document.createElement('td'))
.text(settings.type)
);
// Add attribute name & description as a tooltip
if(settings.description)
{
egw().tooltipBind(row,settings.description);
}
// Value
var value = $j(document.createElement('td')).appendTo(row);
if(row.hasClass('ui-state-disabled'))
{
// No setter - just use text
value.text(this.widget.options[name]);
return row;
}
// Setter function - maybe editable?
var self = this;
var input = null;
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switch(settings.type)
{
case 'string':
input = $j('<input/>')
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.change(function(e) {
self.widget[set_function_name].apply(self.widget, [$j(e.target).val()]);
});
input.val(this.widget.options[name]);
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break;
case 'boolean':
input = $j('<input type="checkbox"/>')
.attr("checked", this.widget.options[name])
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.change(function(e) {
self.widget[set_function_name].apply(self.widget, [e.target.checked]);
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});
break;
default:
value.text(this.widget.options[name]);
return row;
}
input.appendTo(value);
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return row;
};
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egw_LAB.wait(function() {
var wb = new widget_browser(
document.getElementById("widget_list"),
document.getElementById("widget_container")
);
});