egroupware_official/etemplate/js/et2_widget_ajaxSelect.js

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/**
* EGroupware eTemplate2 - JS Ajax select / auto complete object
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Nathan Gray
* @copyright Nathan Gray 2012
* @version $Id$
*/
"use strict";
/*egw:uses
jquery.jquery;
jquery.jquery-ui;
et2_core_inputWidget;
et2_core_valueWidget;
*/
/**
* Using AJAX, this widget allows a type-ahead find similar to a ComboBox, where as the user enters information,
* a drop-down box is populated with the n closest matches. If the user clicks on an item in the drop-down, that
* value is selected.
* n is the maximum number of results set in the user's preferences.
* The user is restricted to selecting values in the list.
* This widget can get data from any function that can provide data to a nextmatch widget.
* @augments et2_inputWidget
*/
var et2_ajaxSelect = et2_inputWidget.extend(
{
attributes: {
'get_rows': {
"name": "Data source",
"type": "any",
"default": "",
"description": "Function to get search results, either a javascript function or server-side."
},
'get_title': {
"name": "Title function",
"type": "any",
"default": "",
"description": "Function to get title for selected entry. Used when closed, and if no template is given."
},
'id_field': {
"name": "Result ID field",
"type": "string",
"default": "value",
"description": "Which key in result sub-array to look for row ID. If omitted, the key for the row will be used."
},
'template': {
"name": "Row template",
"type": "string",
"default": "",
"description": "ID of the template to use to display rows. If omitted, title will be shown for each result."
},
'filter': {
"name": "Filter",
"type": "string",
"default": "",
"description": "Apply filter to search results. Same as nextmatch."
},
'filter2': {
"name": "Filter 2",
"type": "string",
"default": "",
"description": "Apply filter to search results. Same as nextmatch."
},
'link': {
"name": "Read only link",
"type": "boolean",
"default": "true",
"description": "If readonly, widget will be text. If link is set, widget will be a link."
},
// Pass by code only
'values': {
"name": "Values",
"type": "any",
"default": {},
"description": "Specify the available options. Use this, or Data source."
}
},
/**
* Constructor
*
* @memberOf et2_ajaxSelect
*/
init: function(parent, attrs) {
this._super.apply(this, arguments);
if(typeof attrs.get_rows == 'string')
{
attrs.get_rows = this.egw().link('/index.php', {
menuaction: this.options.get_rows
})
}
this.createInputWidget();
this.input = null;
this.createInputWidget();
},
createInputWidget: function() {
this.input = $j(document.createElement("input"));
this.input.addClass("et2_textbox");
this.setDOMNode(this.input[0]);
var widget = this;
this.input.autocomplete({
delay: 100,
source: this.options.get_rows ?
this.options.get_rows :
et2_selectbox.find_select_options(this,this.options.values),
select: function(event, ui) {
widget.value = ui.item[widget.options.id_field];
if(widget.options.get_title)
{
if(typeof widget.options.get_title == 'function')
{
widget.input.val(widget.options.get_title.call(widget.value));
}
else if (typeof widget.options.get_title == 'string')
{
// TODO: Server side callback
}
}
else
{
widget.input.val(ui.item.label);
}
// Prevent default action of setting field to the value
return false;
}
});
},
getValue: function()
{
if(this.options.blur && this.input.val() == this.options.blur) return "";
return this.value;
},
set_value: function(_value)
{
this.value = _value;
if(this.input.autocomplete('instance'))
{
var source = this.input.autocomplete('option','source');
if(typeof source == 'object')
{
for(var i in source)
{
if(typeof source[i].value != 'undefined' && typeof source[i].label != 'undefined' && source[i].value === _value)
{
this.input.val(source[i].label)
}
else if (typeof source[i] == 'string')
{
this.input.val(source[_value]);
break;
}
}
}
else if(typeof source == 'function')
{
// TODO
}
}
},
set_blur: function(_value) {
if(_value) {
this.input.attr("placeholder", _value + ""); // HTML5
if(!this.input[0].placeholder) {
// Not HTML5
if(this.input.val() == "") this.input.val(this.options.blur);
this.input.focus(this,function(e) {
if(e.data.input.val() == e.data.options.blur) e.data.input.val("");
}).blur(this, function(e) {
if(e.data.input.val() == "") e.data.input.val(e.data.options.blur);
});
}
} else {
this.input.removeAttr("placeholder");
}
}
});
et2_register_widget(et2_ajaxSelect, ["ajax_select"]);
/**
* et2_textbox_ro is the dummy readonly implementation of the textbox.
* @augments et2_valueWidget
*/
var et2_ajaxSelect_ro = et2_valueWidget.extend([et2_IDetachedDOM],
{
/**
* Ignore all more advanced attributes.
*/
attributes: {
"multiline": {
"ignore": true
}
},
/**
* Constructor
*
* @memberOf et2_ajaxSelect_ro
*/
init: function() {
this._super.apply(this, arguments);
this.value = "";
this.span = $j(document.createElement("span"));
this.setDOMNode(this.span[0]);
},
set_value: function(_value) {
this.value = _value;
if(!_value) _value = "";
this.span.text(_value);
},
/**
* Code for implementing et2_IDetachedDOM
*/
getDetachedAttributes: function(_attrs)
{
_attrs.push("value");
},
getDetachedNodes: function()
{
return [this.span[0]];
},
setDetachedAttributes: function(_nodes, _values)
{
this.span = jQuery(_nodes[0]);
if(typeof _values["value"] != 'undefined')
{
this.set_value(_values["value"]);
}
}
});
et2_register_widget(et2_ajaxSelect_ro, ["ajax_select_ro"]);