[Flex] 组件Tree系列 —— 运用LabelFunction hasChildren getChildren设置Tree包含节点个数

mxml:

 1 <?xml version="1.0" encoding="utf-8"?>

 2 

 3 <!--功能描述：运用LabelFunction hasChildren getChildren设置Tree包含节点个数-->

 4 

 5 <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 

 6                xmlns:s="library://ns.adobe.com/flex/spark" 

 7                xmlns:mx="library://ns.adobe.com/flex/mx" width="1080" height="1920" addedToStage="application1_addedToStageHandler(event)" resize="application1_resizeHandler(event)">

 8     

 9     <fx:Script>

10         <![CDATA[

11             import mx.events.ResizeEvent;

12             

13             protected function tree_labelFunction(item:Object):String

14             {

15                 var label:String = item.@label;

16                 if (tree.dataDescriptor.hasChildren(item)) {

17                     label += " (" + tree.dataDescriptor.getChildren(item).length + ")";

18                 }

19                 

20                 return label;

21                 

22             }

23             

24             protected function application1_addedToStageHandler(event:Event):void

25             {

26                 trace(stage.stageWidth,stage.width,stage.stageHeight,stage.height);

27                 this.width = 1080;

28                 this.height = 1920;

29                 trace(stage.stageWidth,stage.width,stage.stageHeight,stage.height);

30                 trace(this.width,this.height);

31             }

32             

33             protected function application1_resizeHandler(event:ResizeEvent):void

34             {

35                 //this.width = 1080;

36                 //this.height = 1920;

37                 trace(this.width,this.height);

38             }

39             

40         ]]>

41     </fx:Script>

42     

43     <fx:Declarations>

44         <!-- 将非可视元素（例如服务、值对象）放在此处 -->

45         <fx:XML id="data" xmlns="">

46             <data>

47                 <actor label="周星驰" clickEnabled="false">

48                     <year label="1988">

49                         <item label="《霹雳先锋》香港票房8916612 " clickEnabled="false"/>

50                         <item label="《捕风汉子》香港票房3149395 " />

51                         <item label="《最佳女婿》香港票房5807710 " />

52                     </year>

53                     <year label="1989">

54                         <item label="《龙在天涯》香港票房6809853 " clickEnabled="false"/>

55                         <item label="《义胆群英》香港票房7913329 " />

56                         <item label="《流氓差婆》香港票房5624622 " />

57                         <item label="《风雨同路》香港票房9335299 " />

58                     </year>

59                     <year label="1990 ">

60                         <item label="《望夫成龙》香港票房13703364 " />

61                         <item label="《咖喱辣椒》香港票房15777856 " />

62                         <item label="《小偷阿星》香港票房7968106 " />

63                         <item label="《师兄撞鬼》香港票房12128944 " clickEnabled="false"/>

64                         <item label="《赌圣》香港票房41326156 " />

65                         <item label="《无敌幸运星》香港票房18799869" />

66                         <item label="《江湖最后一个大佬》香港票房5495811 " />

67                     </year>

68                 </actor>

69                 <actor label="李连杰">

70                     <year label="1992">

71                         <item label="笑傲江湖之东方不败（1992）" clickEnabled="false" />

72                         <item label="黄飞鸿之二男儿当自强（1992）" />

73                         <item label="黄飞鸿之三狮王争霸（1992）" />

74                     </year>

75                     <year label="1993">

76                         <item label="方世玉Ⅱ万夫莫敌（1993）" />

77                         <item label="倚天屠龙记之魔教教主（1993）" />

78                         <item label="黄飞鸿之铁鸡斗蜈蚣（1993）" />

79                         <item label="太极张三丰（1993）" />

80                     </year>

81                     <year label="1994">

82                         <item label="新少林五祖（1994）" />

83                         <item label="精武英雄（1994）" />

84                         <item label="中南海保镖（1994） " />

85                         <item label="给爸爸的信（1995" />

86                     </year>

87                     <year label="1995">

88                         <item label="鼠胆龙威（1995）" />

89                         <item label="给爸爸的信（1995" />

90                     </year>

91                 </actor>

92             </data>

93         </fx:XML>

94     </fx:Declarations>

95     <mx:Tree id="tree" dataProvider="{data}" labelField="@label" showRoot="false" width="320" labelFunction="tree_labelFunction"/>

96 </s:Application>