SandboxMouseEvent， FlexMouseEvent，Flex 多选 ComboBox

发布时间：2020-12-15 04:24:11 所属栏目：百科来源：网络整理

导读：说多了墨迹，直接帖代码 ? MyClassFactory 类如下： [java] ? view plain copy import ?flash.display.DisplayObject;?? ?? import ?mx.core.ClassFactory;?? import ?mx.states.OverrideBase;?? ?? public ? class ?MyClassFactory? extends ?ClassFactory

说多了墨迹，直接帖代码

MyClassFactory 类如下：

[java]? 
   view plain 
   copy 
    
   
 import?flash.display.DisplayObject;??
 ??
import?mx.core.ClassFactory;??
 import?mx.states.OverrideBase;??
 ??
public?class?MyClassFactory?extends?ClassFactory??
 {??
 ????public?function?MyClassFactory(generator:Class=null)??
 ????{??
 ????????super(generator);??
 ????}??
private?var?eventArray:Array=new?Array();??
 ????private?var?_properties:Array=new?Array();??
public?function?addInitEventListener(type:String,?listener:Function,?useCapture:Boolean=false,?priority:int=0,useWeakReference:Boolean=false):void{??
 ????????eventArray.push({type:type,listener:listener,useCapture:useCapture,priority:priority,useWeakReference:useWeakReference});??
 ????}??
public?function?addInitProperties(key:String,value:*):void{??
 ????????_properties.push({key:key,value:value});??
 ??????
 ????override?public?function?newInstance():*{??
 ????????trace("MyClassFactory.newInstance();");??
 ????????var?obj:*=super.newInstance();??
 ????????var?event:Object;??
 ????????if(eventArray!=null&&eventArray.length>0&&obj?as?DisplayObject){??
 ????????????var?i:0;??
 ????????????for(i=0;i<_properties.length;i++){??
 ????????????????event=_properties[i];??
 ????????????????if(event.value?is?Function){??
 ????????????????????obj[event.key]=event.value();??
 ????????????????}else{??
 ????????????????????obj[event.key]=event.value;??
 ????????????????}??
 ??????????????????
 ????????????}??
 ??????????????
0;i<eventArray.length;i++){??
 ????????????????event=eventArray[i];??
 ????????????????DisplayObject(obj).addEventListener(event.type,event.listener,event.useCapture,event.priority,event.useWeakReference);??
 ????????????}??
 ????????}??
return?obj??
 }??

MyComboBox 类如下：

copy 
    
   

?flash.events.Event;??

import?flash.events.MouseEvent;??
import?mx.collections.ArrayCollection;??
import?mx.controls.ComboBox;??
import?mx.controls.List;??
import?mx.controls.listClasses.ListBase;??
import?mx.events.FlexEvent;??
import?mx.events.FlexMouseEvent;??
import?mx.events.ListEvent;??
import?mx.events.SandboxMouseEvent;??
class?MyComboBox?extends?ComboBox??
{??
public?function?MyComboBox()??
????{??
super();??
this.dropdownFactory=new?MyClassFactory(List);??
this.getDropdownFactory().addInitEventListener(ListEvent.CHANGE,dropdown_Change,1);??
this.getDropdownFactory().addInitEventListener(MouseEvent.MOUSE_DOWN,?dropdown_mouseDownHandler);??
this.getDropdownFactory().addInitEventListener(FlexMouseEvent.MOUSE_DOWN_OUTSIDE,?dropdown_mouSEOutsideHandler);??
this.getDropdownFactory().addInitEventListener(FlexMouseEvent.MOUSE_WHEEL_OUTSIDE,?dropdown_mouSEOutsideHandler);??
this.getDropdownFactory().addInitEventListener(SandboxMouseEvent.MOUSE_DOWN_SOMEWHERE,153); background-color:inherit; font-weight:bold">this.getDropdownFactory().addInitEventListener(SandboxMouseEvent.MOUSE_WHEEL_SOMEWHERE,153); background-color:inherit; font-weight:bold">this.getDropdownFactory().addInitProperties("allowMultipleSelection",153); background-color:inherit; font-weight:bold">true);??
this.getDropdownFactory().addInitProperties("selectedItems",getSelectedItems);??
private?var?_selectedItems:Array;??
private?var?_selectedIndices:Array;??
private?var?_separation:String=",";??
????[Bindable("change")]??
????[Bindable("valueCommit")]??
public?function?get?selectedItems():Array{??
return??_selectedItems==null?[]:_selectedItems;??
public?function?set?selectedItems(array:Array): ????????var?t:String;??
this._selectedItems=array;??
this.text=selectedLabel;??
public?function?get?selectedIndices():Array{??
return?_selectedIndices!=null?_selectedIndices:[];??
public?function?set?selectedIndices(array:Array):this._selectedIndices=array;??
????/**?
?????*?Label?分隔符?
?????*?*/??
public?function?get?separation():String{??
return?this._separation;??
public?function?set?separation(value:String):this._separation=value;??
public?function?getSelectedItems():Array{??
this.selectedItems;??
?????*?选中项时，Ctrl?是否按下?
private?var?ctrlKey:Boolean=false;??
private?function?dropdown_Change(event:ListEvent): ????????var?listBase:ListBase=event.currentTarget?as?ListBase;??
this.selectedItems=listBase.selectedItems;??
this.selectedIndices=listBase.selectedIndices;??
??????????
????????trace("dropdown_Change-----"+"selectedItems:"+selectedItems.length+"t"+"selectedIndices:"+selectedIndices.length);??
??????
private?function?dropdown_mouseDownHandler(event:MouseEvent): ????????ctrlKey=event.ctrlKey;??
private?function?dropdown_mouseDownOutSide(event:FlexMouseEvent): ????????close();??
public?function?close(trigger:Event=null):if(!ctrlKey){??
super.close(trigger);//未按下?Ctrl?时?关闭??
????????}??
????override?public?function?get?selectedLabel():String??
????????var?array:Array= ????????var?result:String="";??
for(var?i:0;i<array.length;i++){??
????????????result+=itemToLabel(array[i]);??
????????????if(i!=(array.length-1)){??
????????????????result+=separation;??
??????????
return?result;??
public?function??getDropdownFactory():MyClassFactory{??
super.dropdownFactory?as?MyClassFactory;??
?????*??@private?
?????*/??
private?function?dropdown_mouSEOutsideHandler(event:Event):void??
????????trace("selectedItems:"+selectedItems.length+"t"+"selectedIndices:"+selectedIndices.length);??
if?(event?is?MouseEvent)??
????????{??
????????????var?mouseEvent:MouseEvent?=?MouseEvent(event);??
if?(!hitTestPoint(mouseEvent.stageX,?mouseEvent.stageY,?true))??
????????????{??
super.close(event);??
else?if?(event?is?SandboxMouseEvent)???
super.close(event);??
}??

调用代码如下：

[html]? 
   copy

<my:MyComboBox?width="180">??

????my:dataProvider>??
????????s:ArrayCollection ????????????fx:String>选项一</ ????????????>选项二>选项三>选项四>选项五my:MyComboBox>??

（按Ctrl 点击选择项为多选）

转载：http://www.voidcn.com/article/p-fdlfofxw-zz.html

（编辑：李大同）

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