text

;(function($) {



	$.extend($.fn, {

		treeview_addon:function(options){

			var defaults = {

				jsonArray : null,

				jsonUrl:"",//通过url获取json数据，暂时未完成。

					/*in the jsonArray,the key of json will become the a tag's href or the value of the input tag, 

						and the value is also a json data made by two key-value, "text"(string,the display text of the tree's leaves) and "children"(jsonArray,the children of this 

						 branch).

					eg.	 [

							{

								"1":{

									"text":"Item1",

									"children":

										[

											{

												"2":{

														"text":"Item2",

														"children":[]

													}

											}

										]

									}

							}

						 ]

					*/

				inputType:false,/*you can choose checkbox,radio. if you don't want input support, you can write false*/

				inputName:false,

				leavesTag:"span",/*just like the treeview support, you can use a or span, */

				folderAHref:"",/*文件夹的链接，未完成*/

				fileAhref:"",/*文件的链接，未完成*/

				checkedArray:[],/*已经选择的列表，数组的元素是checkbox的value值。正在完成。。*/

					

				partCheckedImageSrc:"./treeviewaddon/partChecked.jpg",

				

				

				

				/*properties below belong to jquery.treeview*/

				

				control: null,

				animated: "fast",

				collapsed: true,

				unique: true,

				persist: "cookie",

				toggle: function() {}

			};

			var options = $.extend(defaults,options);

			var $this=$(this);

			if(options.jsonArray!=null){

				$this.html(getTreeHtml(options.jsonArray));

			}

			$this.treeview({

				animated: options.animated,

				persist: options.persist,

				collapsed: options.collapsed,

				unique: options.unique,

				toggle: options.toggle

			})

			

			/*初始化已经选择的input标签*/

			if(options.checkedArray.length>0){

				for(var i in options.checkedArray){

					$this.find("li input[value='"+options.checkedArray[i]+"']").attr("checked",true);

				}

			}

			if(options.inputType=="checkbox"){

			

				var inputs=$this.find("input:"+options.inputType);

				inputs.click(function(e){

					updateCheckBoxStates($(this));

				}).each(function(index, element) {

					var input=inputs.eq(index);

					if(input.nextAll("ul").length==0){

						updateCheckBoxParentsStates(input);

					}

				});

			}

			

			

			function getTreeHtml(jsonArray){

				var treeHtml="";



				recurseTreeHtml(jsonArray);

				return treeHtml;

				

				function recurseTreeHtml(jsonArray){

					

					for(var i =0;i"+treeItem.text+"";

						

						if(treeItem.children.length>0){

							treeHtml+="

"

							recurseTreeHtml(treeItem.children);

							treeHtml+="

";

						}

						

						treeHtml+=""

					}		

				};

				

			}

			

			function updateCheckBoxStates($this)

			{

				if($this.attr("checked")=="checked"||$this.attr("checked")==true)

				{

					//update lower chechbox's states

					$this.nextAll("ul").find("input:"+options.inputType).attr("checked",true)

						.css("display","inline").next("img").remove();

					//update upper chechbox's states

					updateCheckBoxParentsStates($this);

				}else{

					//update lower chechbox's states

					$this.nextAll("ul").find("input:"+options.inputType).attr("checked",false)

						.next("img").css("display","inline").remove();

					//update upper chechbox's states

					updateCheckBoxParentsStates($this);

				}

			}

			

			

			//update the states of the upper checkbox 

			function updateCheckBoxParentsStates($this)

			{

				var parents = findCheckBoxParents($this);

				for(i in parents){

					var parent=parents[i];

					var children=parent.nextAll("ul").find("input:"+options.inputType);

					var allChecked=true;

					var allNotChecked=true;

					children.each(function(ind){

						if(children.eq(ind).attr("checked")=="checked"||children.eq(ind).attr("checked")==true){

							allNotChecked=false;

						}else{

							allChecked=false;

						}

					});

					if(allChecked){

						parent.attr("checked",true);

							if(parent.next().is("img")){

								parent.css("display","inline").next("img").remove();

							}

					}else if(allNotChecked){

						parent.attr("checked",false);

							if(parent.next().is("img")){

								parent.css("display","inline").next("img").remove();

							}

					}else{

						parent.attr("checked",false);

						if(!parent.next().is("img")){

							parent.css("display","none").after("")

								.next("img").click(function(){

									parent.click();

									if(parent.attr("checked")=="checked"||parent.attr("checked")==true){

										parent.css("display","inline").next("img").remove();

									}else{

										parent.css("display","none").after("");

									}

									updateCheckBoxStates(parent);

								});

						}

						//css("background","url(./images/partChecked.jpg)");

					}

				}

						

			}

			

			//find the upper checkbox

			function findCheckBoxParents(c)

			{

				var checkBoxParents=new Array();

				function pushCheckBoxParent(cc)

				{

					//alert(cc.parent().parent().html());

					var checkBoxParent=cc.parent().parent().prevAll("input:"+options.inputType);

					if(checkBoxParent.length>0){

						checkBoxParents.push(checkBoxParent);

						pushCheckBoxParent(checkBoxParent);

					}

				}

				

				pushCheckBoxParent(c);

				return checkBoxParents;

				

			}

			

		}

	});

	

})(jQuery);