FLEX的TREE组件源码解读（一）

Tree控件类元数据类型相关解释

 

//  Events[Event(name="itemClose", type="mx.events.TreeEvent")] //当一个分支折叠触发此事件

[Event(name="itemOpen", type="mx.events.TreeEvent")] //当一个分支展开触发此事件

[Event(name="itemOpening", type="mx.events.TreeEvent")]//当一个分支展开或者关闭时触发？？

 

 

//  Styles

include "../styles/metadata/PaddingStyles.as";

//设置交替背景色 

[Style(name="alternatingItemColors", type="Array", arrayType="uint", format="Color", inherit="yes")]

//设置不同深度级别的背景色。详细：http://blog.minidx.com/2008/12/23/1812.html

[Style(name="depthColors", type="Array", arrayType="uint", format="Color", inherit="yes")]

[Style(name="defaultLeafIcon", type="Class", format="EmbeddedFile", inherit="no")]//设定默认子页ICON

[Style(name="disclosureOpenIcon", type="Class", format="EmbeddedFile", inherit="no")]//设置向下ICON

[Style(name="disclosureClosedIcon", type="Class", format="EmbeddedFile", inherit="no")]//设置向右ICON

[Style(name="folderOpenIcon", type="Class", format="EmbeddedFile", inherit="no")]//设置文件夹关闭ICON

[Style(name="folderClosedIcon", type="Class", format="EmbeddedFile", inherit="no")]//设置文件夹打开ICON

[Style(name="indentation", type="Number", inherit="no")]//设置缩进属性

//设置动画变化的时间长短。详细http://www.elanso.com/ArticleModule/sourcearticle.aspx?idx=TgSYPARbKAUAPAVILcJhRRIi 

[Style(name="openDuration", type="Number", format="Time", inherit="no")]

//动画效果openEasingFunction。详细http://blog.minidx.com/2008/12/22/1808.html

[Style(name="openEasingFunction", type="Function", inherit="no")]

[Style(name="rollOverColor", type="uint", format="Color", inherit="yes")]//悬浮颜色效果

[Style(name="selectionColor", type="uint", format="Color", inherit="yes")]//选择颜色效果

[Style(name="selectionDisabledColor", type="uint", format="Color", inherit="yes")]//只读颜色效果

//选择动画效果

[Style(name="selectionEasingFunction", type="Function", inherit="no")]

//文字悬浮动画效果

[Style(name="textRollOverColor", type="uint", format="Color", inherit="yes")]

//文字被选择效果

[Style(name="textSelectedColor", type="uint", format="Color", inherit="yes")]

 

 

//  Other metadata[AccessibilityClass(implementation="mx.accessibility.TreeAccImpl")]

//默认绑定的数据提供器属性

[DefaultBindingProperty(destination="dataProvider")]

//默认属性数据提供器

[DefaultProperty("dataProvider")]

//默认触发事件

[DefaultTriggerEvent("change")]

//Tree.png

[IconFile("Tree.png")]

//

[RequiresDataBinding(true)]

 

 

    private var IS_NEW_ROW_STYLE:Object =    {        depthColors: true,//深度        indentation: true,//缩进        disclosureOpenIcon: true,//向下箭头图标        disclosureClosedIcon: true,//向左箭头图标        folderOpenIcon: true,//文件夹打开状态图标        folderClosedIcon: true,//文件夹关闭状态图标        defaultLeafIcon: true   //叶子节点图标    };