text: /**
   * ### Checkbox plugin
   *
   * This plugin renders checkbox icons in front of each node, making multiple selection much easier. 
   * It also supports tri-state behavior, meaning that if a node has a few of its children checked it will be rendered as undetermined, and state will be propagated up.
   */
  /*globals jQuery, define, exports, require, document */
  (function (factory) {
  	"use strict";
  	if (typeof define === 'function' && define.amd) {
  		define('jstree.checkbox', ['jquery','jstree'], factory);
  	}
  	else if(typeof exports === 'object') {
  		factory(require('jquery'), require('jstree'));
  	}
  	else {
  		factory(jQuery, jQuery.jstree);
  	}
  }(function ($, jstree, undefined) {
  	"use strict";
  
  	if($.jstree.plugins.checkbox) { return; }
  
  	var _i = document.createElement('I');
  	_i.className = 'jstree-icon jstree-checkbox';
  	/**
  	 * stores all defaults for the checkbox plugin
  	 * @name $.jstree.defaults.checkbox
  	 * @plugin checkbox
  	 */
  	$.jstree.defaults.checkbox = {
  		/**
  		 * a boolean indicating if checkboxes should be visible (can be changed at a later time using `show_checkboxes()` and `hide_checkboxes`). Defaults to `true`.
  		 * @name $.jstree.defaults.checkbox.visible
  		 * @plugin checkbox
  		 */
  		visible				: true,
  		/**
  		 * a boolean indicating if checkboxes should cascade down and have an undetermined state. Defaults to `true`.
  		 * @name $.jstree.defaults.checkbox.three_state
  		 * @plugin checkbox
  		 */
  		three_state			: true,
  		/**
  		 * a boolean indicating if clicking anywhere on the node should act as clicking on the checkbox. Defaults to `true`.
  		 * @name $.jstree.defaults.checkbox.whole_node
  		 * @plugin checkbox
  		 */
  		whole_node			: true,
  		/**
  		 * a boolean indicating if the selected style of a node should be kept, or removed. Defaults to `true`.
  		 * @name $.jstree.defaults.checkbox.keep_selected_style
  		 * @plugin checkbox
  		 */
  		keep_selected_style	: true,
  		/**
  		 * This setting controls how cascading and undetermined nodes are applied. 
  		 * If 'up' is in the string - cascading up is enabled, if 'down' is in the string - cascading down is enabled, if 'undetermined' is in the string - undetermined nodes will be used. 
  		 * If `three_state` is set to `true` this setting is automatically set to 'up+down+undetermined'. Defaults to ''.
  		 * @name $.jstree.defaults.checkbox.cascade
  		 * @plugin checkbox
  		 */
  		cascade				: ''
  	};
  	$.jstree.plugins.checkbox = function (options, parent) {
  		this.bind = function () {
  			parent.bind.call(this);
  			this._data.checkbox.uto = false;
  			if(this.settings.checkbox.three_state) {
  				this.settings.checkbox.cascade = 'up+down+undetermined';
  			}
  			this.element
  				.on("init.jstree", $.proxy(function () {
  						this._data.checkbox.visible = this.settings.checkbox.visible;
  						if(!this.settings.checkbox.keep_selected_style) {
  							this.element.addClass('jstree-checkbox-no-clicked');
  						}
  					}, this))
  				.on("loading.jstree", $.proxy(function () {
  						this[ this._data.checkbox.visible ? 'show_checkboxes' : 'hide_checkboxes' ]();
  					}, this));
  			if(this.settings.checkbox.cascade.indexOf('undetermined') !== -1) {
  				this.element
  					.on('changed.jstree move_node.jstree copy_node.jstree redraw.jstree open_node.jstree', $.proxy(function () {
  							// only if undetermined is in setting
  							if(this._data.checkbox.uto) { clearTimeout(this._data.checkbox.uto); }
  							this._data.checkbox.uto = setTimeout($.proxy(this._undetermined, this), 50);
  						}, this));
  			}
  			if(this.settings.checkbox.cascade.indexOf('up') !== -1 || this.settings.checkbox.cascade.indexOf('down') !== -1) {
  				this.element
  					.on('model.jstree', $.proxy(function (e, data) {
  							var m = this._model.data,
  								p = m[data.parent],
  								dpc = data.nodes,
  								chd = [],
  								c, i, j, k, l, tmp, s = this.settings.checkbox.cascade;
  
  							if(s.indexOf('down') !== -1) {
  								// apply down
  								if(p.state.selected) {
  									for(i = 0, j = dpc.length; i < j; i++) {
  										m[dpc[i]].state.selected = true;
  									}
  									this._data.core.selected = this._data.core.selected.concat(dpc);
  								}
  								else {
  									for(i = 0, j = dpc.length; i < j; i++) {
  										if(m[dpc[i]].state.selected) {
  											for(k = 0, l = m[dpc[i]].children_d.length; k < l; k++) {
  												m[m[dpc[i]].children_d[k]].state.selected = true;
  											}
  											this._data.core.selected = this._data.core.selected.concat(m[dpc[i]].children_d);
  										}
  									}
  								}
  							}
  
  							if(s.indexOf('up') !== -1) {
  								// apply up
  								for(i = 0, j = p.children_d.length; i < j; i++) {
  									if(!m[p.children_d[i]].children.length) {
  										chd.push(m[p.children_d[i]].parent);
  									}
  								}
  								chd = $.vakata.array_unique(chd);
  								for(k = 0, l = chd.length; k < l; k++) {
  									p = m[chd[k]];
  									while(p && p.id !== '#') {
  										c = 0;
  										for(i = 0, j = p.children.length; i < j; i++) {
  											c += m[p.children[i]].state.selected;
  										}
  										if(c === j) {
  											p.state.selected = true;
  											this._data.core.selected.push(p.id);
  											tmp = this.get_node(p, true);
  											if(tmp && tmp.length) {
  												tmp.children('.jstree-anchor').addClass('jstree-clicked');
  											}
  										}
  										else {
  											break;
  										}
  										p = this.get_node(p.parent);
  									}
  								}
  							}
  
  							this._data.core.selected = $.vakata.array_unique(this._data.core.selected);
  						}, this))
  					.on('select_node.jstree', $.proxy(function (e, data) {
  							var obj = data.node,
  								m = this._model.data,
  								par = this.get_node(obj.parent),
  								dom = this.get_node(obj, true),
  								i, j, c, tmp, s = this.settings.checkbox.cascade;
  
  							// apply down
  							if(s.indexOf('down') !== -1) {
  								this._data.core.selected = $.vakata.array_unique(this._data.core.selected.concat(obj.children_d));
  								for(i = 0, j = obj.children_d.length; i < j; i++) {
  									tmp = m[obj.children_d[i]];
  									tmp.state.selected = true;
  									if(tmp && tmp.original && tmp.original.state && tmp.original.state.undetermined) {
  										tmp.original.state.undetermined = false;
  									}
  								}
  							}
  
  							// apply up
  							if(s.indexOf('up') !== -1) {
  								while(par && par.id !== '#') {
  									c = 0;
  									for(i = 0, j = par.children.length; i < j; i++) {
  										c += m[par.children[i]].state.selected;
  									}
  									if(c === j) {
  										par.state.selected = true;
  										this._data.core.selected.push(par.id);
  										tmp = this.get_node(par, true);
  										if(tmp && tmp.length) {
  											tmp.children('.jstree-anchor').addClass('jstree-clicked');
  										}
  									}
  									else {
  										break;
  									}
  									par = this.get_node(par.parent);
  								}
  							}
  
  							// apply down (process .children separately?)
  							if(s.indexOf('down') !== -1 && dom.length) {
  								dom.find('.jstree-anchor').addClass('jstree-clicked');
  							}
  						}, this))
  					.on('deselect_all.jstree', $.proxy(function (e, data) {
  							var obj = this.get_node('#'),
  								m = this._model.data,
  								i, j, tmp;
  							for(i = 0, j = obj.children_d.length; i < j; i++) {
  								tmp = m[obj.children_d[i]];
  								if(tmp && tmp.original && tmp.original.state && tmp.original.state.undetermined) {
  									tmp.original.state.undetermined = false;
  								}
  							}
  						}, this))
  					.on('deselect_node.jstree', $.proxy(function (e, data) {
  							var obj = data.node,
  								dom = this.get_node(obj, true),
  								i, j, tmp, s = this.settings.checkbox.cascade;
  							if(obj && obj.original && obj.original.state && obj.original.state.undetermined) {
  								obj.original.state.undetermined = false;
  							}
  
  							// apply down
  							if(s.indexOf('down') !== -1) {
  								for(i = 0, j = obj.children_d.length; i < j; i++) {
  									tmp = this._model.data[obj.children_d[i]];
  									tmp.state.selected = false;
  									if(tmp && tmp.original && tmp.original.state && tmp.original.state.undetermined) {
  										tmp.original.state.undetermined = false;
  									}
  								}
  							}
  
  							// apply up
  							if(s.indexOf('up') !== -1) {
  								for(i = 0, j = obj.parents.length; i < j; i++) {
  									tmp = this._model.data[obj.parents[i]];
  									tmp.state.selected = false;
  									if(tmp && tmp.original && tmp.original.state && tmp.original.state.undetermined) {
  										tmp.original.state.undetermined = false;
  									}
  									tmp = this.get_node(obj.parents[i], true);
  									if(tmp && tmp.length) {
  										tmp.children('.jstree-anchor').removeClass('jstree-clicked');
  									}
  								}
  							}
  							tmp = [];
  							for(i = 0, j = this._data.core.selected.length; i < j; i++) {
  								// apply down + apply up
  								if(
  									(s.indexOf('down') === -1 || $.inArray(this._data.core.selected[i], obj.children_d) === -1) &&
  									(s.indexOf('up') === -1 || $.inArray(this._data.core.selected[i], obj.parents) === -1)
  								) {
  									tmp.push(this._data.core.selected[i]);
  								}
  							}
  							this._data.core.selected = $.vakata.array_unique(tmp);
  
  							// apply down (process .children separately?)
  							if(s.indexOf('down') !== -1 && dom.length) {
  								dom.find('.jstree-anchor').removeClass('jstree-clicked');
  							}
  						}, this));
  			}
  			if(this.settings.checkbox.cascade.indexOf('up') !== -1) {
  				this.element
  					.on('delete_node.jstree', $.proxy(function (e, data) {
  							// apply up (whole handler)
  							var p = this.get_node(data.parent),
  								m = this._model.data,
  								i, j, c, tmp;
  							while(p && p.id !== '#') {
  								c = 0;
  								for(i = 0, j = p.children.length; i < j; i++) {
  									c += m[p.children[i]].state.selected;
  								}
  								if(c === j) {
  									p.state.selected = true;
  									this._data.core.selected.push(p.id);
  									tmp = this.get_node(p, true);
  									if(tmp && tmp.length) {
  										tmp.children('.jstree-anchor').addClass('jstree-clicked');
  									}
  								}
  								else {
  									break;
  								}
  								p = this.get_node(p.parent);
  							}
  						}, this))
  					.on('move_node.jstree', $.proxy(function (e, data) {
  							// apply up (whole handler)
  							var is_multi = data.is_multi,
  								old_par = data.old_parent,
  								new_par = this.get_node(data.parent),
  								m = this._model.data,
  								p, c, i, j, tmp;
  							if(!is_multi) {
  								p = this.get_node(old_par);
  								while(p && p.id !== '#') {
  									c = 0;
  									for(i = 0, j = p.children.length; i < j; i++) {
  										c += m[p.children[i]].state.selected;
  									}
  									if(c === j) {
  										p.state.selected = true;
  										this._data.core.selected.push(p.id);
  										tmp = this.get_node(p, true);
  										if(tmp && tmp.length) {
  											tmp.children('.jstree-anchor').addClass('jstree-clicked');
  										}
  									}
  									else {
  										break;
  									}
  									p = this.get_node(p.parent);
  								}
  							}
  							p = new_par;
  							while(p && p.id !== '#') {
  								c = 0;
  								for(i = 0, j = p.children.length; i < j; i++) {
  									c += m[p.children[i]].state.selected;
  								}
  								if(c === j) {
  									if(!p.state.selected) {
  										p.state.selected = true;
  										this._data.core.selected.push(p.id);
  										tmp = this.get_node(p, true);
  										if(tmp && tmp.length) {
  											tmp.children('.jstree-anchor').addClass('jstree-clicked');
  										}
  									}
  								}
  								else {
  									if(p.state.selected) {
  										p.state.selected = false;
  										this._data.core.selected = $.vakata.array_remove_item(this._data.core.selected, p.id);
  										tmp = this.get_node(p, true);
  										if(tmp && tmp.length) {
  											tmp.children('.jstree-anchor').removeClass('jstree-clicked');
  										}
  									}
  									else {
  										break;
  									}
  								}
  								p = this.get_node(p.parent);
  							}
  						}, this));
  			}
  		};
  		/**
  		 * set the undetermined state where and if necessary. Used internally.
  		 * @private
  		 * @name _undetermined()
  		 * @plugin checkbox
  		 */
  		this._undetermined = function () {
  			var i, j, m = this._model.data, s = this._data.core.selected, p = [], t = this;
  			for(i = 0, j = s.length; i < j; i++) {
  				if(m[s[i]] && m[s[i]].parents) {
  					p = p.concat(m[s[i]].parents);
  				}
  			}
  			// attempt for server side undetermined state
  			this.element.find('.jstree-closed').not(':has(.jstree-children)')
  				.each(function () {
  					var tmp = t.get_node(this), tmp2;
  					if(!tmp.state.loaded) {
  						if(tmp.original && tmp.original.state && tmp.original.state.undetermined && tmp.original.state.undetermined === true) {
  							p.push(tmp.id);
  							p = p.concat(tmp.parents);
  						}
  					}
  					else {
  						for(i = 0, j = tmp.children_d.length; i < j; i++) {
  							tmp2 = m[tmp.children_d[i]];
  							if(!tmp2.state.loaded && tmp2.original && tmp2.original.state && tmp2.original.state.undetermined && tmp2.original.state.undetermined === true) {
  								p.push(tmp2.id);
  								p = p.concat(tmp2.parents);
  							}
  						}
  					}
  				});
  			p = $.vakata.array_unique(p);
  			p = $.vakata.array_remove_item(p,'#');
  
  			this.element.find('.jstree-undetermined').removeClass('jstree-undetermined');
  			for(i = 0, j = p.length; i < j; i++) {
  				if(!m[p[i]].state.selected) {
  					s = this.get_node(p[i], true);
  					if(s && s.length) {
  						s.children('.jstree-anchor').children('.jstree-checkbox').addClass('jstree-undetermined');
  					}
  				}
  			}
  		};
  		this.redraw_node = function(obj, deep, is_callback) {
  			obj = parent.redraw_node.call(this, obj, deep, is_callback);
  			if(obj) {
  				var i, j, tmp = null;
  				for(i = 0, j = obj.childNodes.length; i < j; i++) {
  					if(obj.childNodes[i] && obj.childNodes[i].className && obj.childNodes[i].className.indexOf("jstree-anchor") !== -1) {
  						tmp = obj.childNodes[i];
  						break;
  					}
  				}
  				if(tmp) {
  					tmp.insertBefore(_i.cloneNode(false), tmp.childNodes[0]);
  				}
  			}
  			if(!is_callback && this.settings.checkbox.cascade.indexOf('undetermined') !== -1) {
  				if(this._data.checkbox.uto) { clearTimeout(this._data.checkbox.uto); }
  				this._data.checkbox.uto = setTimeout($.proxy(this._undetermined, this), 50);
  			}
  			return obj;
  		};
  		this.activate_node = function (obj, e) {
  			if(this.settings.checkbox.whole_node || $(e.target).hasClass('jstree-checkbox')) {
  				e.ctrlKey = true;
  			}
  			return parent.activate_node.call(this, obj, e);
  		};
  		/**
  		 * show the node checkbox icons
  		 * @name show_checkboxes()
  		 * @plugin checkbox
  		 */
  		this.show_checkboxes = function () { this._data.core.themes.checkboxes = true; this.get_container_ul().removeClass("jstree-no-checkboxes"); };
  		/**
  		 * hide the node checkbox icons
  		 * @name hide_checkboxes()
  		 * @plugin checkbox
  		 */
  		this.hide_checkboxes = function () { this._data.core.themes.checkboxes = false; this.get_container_ul().addClass("jstree-no-checkboxes"); };
  		/**
  		 * toggle the node icons
  		 * @name toggle_checkboxes()
  		 * @plugin checkbox
  		 */
  		this.toggle_checkboxes = function () { if(this._data.core.themes.checkboxes) { this.hide_checkboxes(); } else { this.show_checkboxes(); } };
  	};
  
  	// include the checkbox plugin by default
  	// $.jstree.defaults.plugins.push("checkbox");
  }));