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最新文章 : flex

Flex拖拽 Canvas容器里拖动Box

2009-02-18
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Flex拖拽-Canvas容器里拖动Box
文章分类:Web前端关键字: flex, flex拖拽, canvas, box
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
import mx.core.IUIComponent;
import mx.containers.Box;
import mx.containers.Canvas;
import mx.events.DragEvent;
import mx.managers.DragManager;
import mx.core.DragSource;
import mx.core.UIComponent;
private static const FORMAT:String = "box";
private function boxMouseDownHandler(evt:MouseEvent):void{
var iu:IUIComponent = evt.currentTarget as IUIComponent;
var dragSource:DragSource = new DragSource();
dragSource.addData( iu, FORMAT );
DragManager.doDrag( iu, dragSource, evt );
}

private function canvasDragEnterHandler(evt:DragEvent):void{
if(evt.dragSource.hasFormat(FORMAT)){
DragManager.acceptDragDrop(Canvas(evt.currentTarget));
......

Flex拖拽 List内部拖拽

Flex拖拽-List内部拖拽
关键字: flex, flex拖拽, list
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="creationHandler();">
<mx:Script>
<![CDATA[
import mx.utils.ObjectUtil;
import mx.events.DragEvent;
import mx.collections.ArrayCollection;
private function creationHandler():void {
var collection:ArrayCollection = new ArrayCollection( ['Josh', 'Todd', 'Abey'] );
contactList.dataProvider = collection;
}

]]>
</mx:Script>

<mx:Panel title="Contact List:" width="200" height="200">
<mx:List id="contactList" width="100%" height="100%" dragEnabled="true" dropEnabled="true" dragMoveEnabled="true"/>
</mx:Panel>
</mx:WindowedApplication>
......

Flex拖拽两个List之间拖拽

Flex拖拽-两个List之间拖拽
关键字: flex拖拽, list
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="creationHandler();">
<mx:Script>
<![CDATA[
import mx.events.DragEvent;
import mx.collections.ArrayCollection;
[Bindable]
public var isEnabled:Boolean = true;
private static const DIS_LABEL:String = "不能拖拽";
private static const EN_LABEL:String = "可以拖拽";
private function creationHandler():void {
list1.dataProvider = new ArrayCollection(['Spider Monkey', 'Orangutan', 'Gorilla']);
list2.dataProvider = new ArrayCollection(['Lion', 'Cheetah', 'Puma'])
}
private function clickHandler():void {
enableBtn.label = ( enableBtn.label == DIS_LABEL ) ? EN_LABEL : DIS_LABEL;
isEnabled = !isEnabled;
}
private function dragEnterHandler( evt:DragEvent ):void {
evt.target.dropEnabled = ( evt.target != evt.dragInitiator );
}
......

Flex 中的States(状态)

Flex 中的States(状态)
关键字: flex, states
States 是一套用于创建状态组件的强大工具，也就是说组件可以有多个视图。
使用States 来切换视图可以节约资源
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:states>
<mx:State name="Register">
<mx:AddChild relativeTo="{loginForm}" position="lastChild">
<mx:FormItem id="confirm" label="确认密码">
<mx:TextInput/>
</mx:FormItem>
</mx:AddChild>
<mx:SetProperty target="{loginPanel}" name="title" value="注册"/>
<mx:SetProperty target="{loginButton}" name="label" value="注册"/>
<mx:RemoveChild target="{registerLink}"/>
<mx:AddChild relativeTo="{spacerl}" position="before">
<mx:LinkButton label="返回到登陆" click="currentState=''"/>
</mx:AddChild>
</mx:State>
</mx:states>

<mx:Panel id="loginPanel" title="登陆" font ......

Flex 对集合的多个字段进行排序

Flex 对集合的多个字段进行排序
关键字: flex, 排序, 日期排序
因为数组可被多个SortFields 排序，Sort 对象的fields 属性就是一个数组。这些sort 创建一
个层级的结构，所有对象进行分组排序，先根据field 属性里的第一个SortField 对象，再第
一个，以此类推。这个例子代码先根据regions 再states 对集合进行排序：
coll = new ArrayCollection{[{city:"Cleveland", state:"Ohio", region:"East"},{city:"Sacramento", state:"California", region:"West"},{city:"Atlanta",state:"Georgia", region:"South"},{city:"Columbus", state:"Ohio", region:"East"}]);
var sort:Sort = new Sort();
sort.fields = [new SortField("region"), new SortField("state")];
coll.sort = sort;
coll.refresh();
对集合的日期类型数据进行排序,使用mx.utils.ObjectUtil 类的dateCompare 方法比较日期。
ObjectUtil 类提供一个dateCompare 方法用于检测两个Date 对象哪个更早。你可以用
ObjectUtil.dateCompare 方法来比较两个日期的大小。dateCompare 方法返回1, 0, 或
-1：如果值为null 或相等返回0，如果第一个值为null 或小于第二个值返回1，如果第二个值
为null 或小 ......

Flex中窗体参数传递方法

http://blog.csdn.net/shuiying/archive/2009/08/19/4459419.aspx 剽于
DELPHI C#传递很简单这个怎么怎么麻烦呢

Flex中窗体参数传递方法
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1. 调用窗体
A 窗体是一个applicaton窗体 B
窗� ......