egroupware/etemplate/js/et2_widget_itempicker.js

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/**
* eGroupWare eTemplate2 - JS Itempicker object
* derived from et2_link_entry widget @copyright 2011 Nathan Gray
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Christian Binder
* @author Nathan Gray
* @copyright 2012 Christian Binder
* @copyright 2011 Nathan Gray
* @version $Id: et2_widget_itempicker.js 38623 2012-03-26 23:27:53Z jaytraxx $
*/
"use strict";
/*egw:uses
jquery.jquery;
et2_core_inputWidget;
et2_core_valueWidget;
*/
/**
* Class which implements the "itempicker" XET-Tag
*/
var et2_itempicker = et2_inputWidget.extend({
attributes: {
"application": {
"name": "Application",
"type": "string",
"default": "",
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"description": "Limit to the listed application or applications (comma separated)"
},
"blur": {
"name": "Placeholder",
"type": "string",
"default": et2_no_init,
"description": "This text get displayed if an input-field is empty and does not have the input-focus (blur). It can be used to show a default value or a kind of help-text."
},
"query": {
"name": "Query callback",
"type": "any",
"default": false,
"description": "Callback before query to server. Must return true, or false to abort query."
},
},
legacyOptions: ["application"],
search_timeout: 200, //ms after change to send query
minimum_characters: 2, // Don't send query unless there's at least this many chars
last_search: "", // Remember last search value
current_app: "", // Remember currently chosen application
init: function() {
this._super.apply(this, arguments);
this.div = null;
this.left = null;
this.right = null;
this.right_container = null;
this.app_select = null;
this.search = null;
this.button_action = null;
this.itemlist = null;
this.createInputWidget();
},
clearSearchResults: function() {
this.search.val("");
this.itemlist.html("");
this.search.focus();
this.clear.hide();
},
createInputWidget: function() {
var _self = this;
this.div = $j(document.createElement("div"));
this.left = $j(document.createElement("div"));
this.right = $j(document.createElement("div"));
this.right_container = $j(document.createElement("div"));
this.app_select = $j(document.createElement("ul"));
this.search = $j(document.createElement("input"));
this.clear = $j(document.createElement("span"));
this.itemlist = $j(document.createElement("div"));
// Container elements
this.div.addClass("et2_itempicker");
this.left.addClass("et2_itempicker_left");
this.right.addClass("et2_itempicker_right");
this.right_container.addClass("et2_itempicker_right_container");
// Application select
this.app_select.addClass("et2_itempicker_app_select");
var item_count = 0;
for(var key in this.options.select_options) {
var img_icon = this.egw().image(key + "/navbar");
if(img_icon === null) {
continue;
}
var img = $j(document.createElement("img"));
img.attr("src", img_icon);
var item = $j(document.createElement("li"))
item.attr("id", key)
.click(function() {
_self.clearSearchResults();
$j(".et2_itempicker_app_select li").removeClass("selected");
$j(this).addClass("selected");
_self.current_app = $j(this).attr("id");
})
.append(img);
if(item_count == 0) {
item.addClass("selected"); // select first item by default
this.current_app = key;
}
this.app_select.append(item);
item_count++;
}
// Search input field
this.search.addClass("et2_itempicker_search");
this.search.keyup(function() {
var request = {};
request.term = $j(this).val();
_self.query(request);
});
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this.set_blur(this.options.blur, this.search);
// Clear button for search
this.clear
.addClass("et2_itempicker_clear ui-icon ui-icon-close")
.click(function(e){
_self.clearSearchResults();
})
.hide();
// Action button
this.button_action = et2_createWidget("button");
$j(this.button_action.getDOMNode()).addClass("et2_itempicker_button_action");
this.button_action.set_label(this.egw().lang("Action"));
this.button_action.click = function() {
// ToDo: execute defined action
console.log("Button action clicked!");
};
// Itemlist
this.itemlist.attr("id", "itempicker_itemlist");
this.itemlist.addClass("et2_itempicker_itemlist");
// Put everything together
this.left.append(this.app_select);
this.right_container.append(this.search);
this.right_container.append(this.clear);
this.right_container.append(this.button_action.getDOMNode());
this.right_container.append(this.itemlist);
this.right.append(this.right_container);
this.div.append(this.right); // right before left to have a natural
this.div.append(this.left); // z-index for left div over right div
this.setDOMNode(this.div[0]);
},
getValue: function()
{
if(this.options.blur && this.input.val() == this.options.blur) return "";
return this._super.apply(this, arguments);
},
/**
* Ask server for entries matching selected app/type and filtered by search string
*/
query: function(request) {
if(request.term.length < 3) {
return true;
}
// Remember last search
this.last_search = request.term;
// Allow hook / tie in
if(this.options.query && typeof this.options.query == 'function')
{
if(!this.options.query(request, response)) return false;
}
//if(request.term in this.cache) {
// return response(this.cache[request.term]);
//}
this.itemlist.addClass("loading");
this.clear.css("display", "inline-block");
var request = new egw_json_request("etemplate_widget_itempicker::ajax_item_search::etemplate",
[this.current_app, '', request.term, request.options],
this
);
request.sendRequest(true, this._results, this);
},
/**
* Server found some results
*/
_results: function(data) {
this.itemlist.removeClass("loading");
this.updateItemList(data);
},
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set_blur: function(_value, input) {
if(typeof input == 'undefined') input = this.search;
if(_value) {
input.attr("placeholder", _value); // HTML5
if(!input[0].placeholder) {
// Not HTML5
if(input.val() == "") input.val(_value);
input.focus(input,function(e) {
var placeholder = _value;
if(e.data.val() == placeholder) e.data.val("");
}).blur(input, function(e) {
var placeholder = _value;
if(e.data.val() == "") e.data.val(placeholder);
});
if(input.val() == "") input.val(_value);
}
} else {
this.search.removeAttr("placeholder");
}
},
transformAttributes: function(_attrs) {
this._super.apply(this, arguments);
_attrs["select_options"] = {};
if(_attrs["application"])
{
var apps = et2_csvSplit(_attrs["application"], null, ",");
for(var i = 0; i < apps.length; i++)
{
_attrs["select_options"][apps[i]] = this.egw().lang(apps[i]);
}
}
else
{
_attrs["select_options"] = this.egw().link_app_list('query');
}
// Check whether the options entry was found, if not read it from the
// content array.
if (_attrs["select_options"] == null)
{
_attrs["select_options"] = this.getArrayMgr('content')
.getEntry("options-" + this.id)
}
// Default to an empty object
if (_attrs["select_options"] == null)
{
_attrs["select_options"] = {};
}
},
updateItemList: function(data) {
var list = $j(document.createElement("ul"));
var item_count = 0;
var _self = this;
for(var id in data) {
var item = $j(document.createElement("li"));
if(item_count%2 == 0) {
item.addClass("row_on");
} else {
item.addClass("row_off");
}
item.attr("id", id)
.html(data[id])
.click(function(e) {
if(e.ctrlKey || e.metaKey) {
// add to selection
$j(this).addClass("selected");
} else if(e.shiftKey) {
// select range
var start = $j(this).siblings(".selected").first();
if(start == 0) {
// no start item - cannot select range - select single item
$j(this).addClass("selected");
return true;
}
var end = $j(this);
// swap start and end if start appears after end in dom hierarchy
if(start.index() > end.index()) {
var startOld = start;
start = end;
end = startOld;
}
// select start to end
start.addClass("selected");
start.nextUntil(end).addClass("selected");
end.addClass("selected");
} else {
// select single item
$j(this).siblings(".selected").removeClass("selected");
$j(this).addClass("selected");
}
});
list.append(item);
item_count++;
}
this.itemlist.html(list);
}
});
et2_register_widget(et2_itempicker, ["itempicker"]);