/**
* ClassList.js
*
* Released under LGPL License.
* Copyright (c) 1999-2015 Ephox Corp. All rights reserved
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
/**
* Handles adding and removal of classes.
*
* @private
* @class tinymce.ui.ClassList
*/
define("tinymce/ui/ClassList", [
"tinymce/util/Tools"
], function(Tools) {
"use strict";
function noop() {
}
/**
* Constructs a new class list the specified onchange
* callback will be executed when the class list gets modifed.
*
* @constructor ClassList
* @param {function} onchange Onchange callback to be executed.
*/
function ClassList(onchange) {
this.cls = [];
this.cls._map = {};
this.onchange = onchange || noop;
this.prefix = '';
}
Tools.extend(ClassList.prototype, {
/**
* Adds a new class to the class list.
*
* @method add
* @param {String} cls Class to be added.
* @return {tinymce.ui.ClassList} Current class list instance.
*/
add: function(cls) {
if (cls && !this.contains(cls)) {
this.cls._map[cls] = true;
this.cls.push(cls);
this._change();
}
return this;
},
/**
* Removes the specified class from the class list.
*
* @method remove
* @param {String} cls Class to be removed.
* @return {tinymce.ui.ClassList} Current class list instance.
*/
remove: function(cls) {
if (this.contains(cls)) {
for (var i = 0; i < this.cls.length; i++) {
if (this.cls[i] === cls) {
break;
}
}
this.cls.splice(i, 1);
delete this.cls._map[cls];
this._change();
}
return this;
},
/**
* Toggles a class in the class list.
*
* @method toggle
* @param {String} cls Class to be added/removed.
* @param {Boolean} state Optional state if it should be added/removed.
* @return {tinymce.ui.ClassList} Current class list instance.
*/
toggle: function(cls, state) {
var curState = this.contains(cls);
if (curState !== state) {
if (curState) {
this.remove(cls);
} else {
this.add(cls);
}
this._change();
}
return this;
},
/**
* Returns true if the class list has the specified class.
*
* @method contains
* @param {String} cls Class to look for.
* @return {Boolean} true/false if the class exists or not.
*/
contains: function(cls) {
return !!this.cls._map[cls];
},
/**
* Returns a space separated list of classes.
*
* @method toString
* @return {String} Space separated list of classes.
*/
_change: function() {
delete this.clsValue;
this.onchange.call(this);
}
});
// IE 8 compatibility
ClassList.prototype.toString = function() {
var value;
if (this.clsValue) {
return this.clsValue;
}
value = '';
for (var i = 0; i < this.cls.length; i++) {
if (i > 0) {
value += ' ';
}
value += this.prefix + this.cls[i];
}
return value;
};
return ClassList;
});
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