FLEX自定义事件,及上传

as3端

 
 

package?com.czw.apps.base?
  
  
{?
  
  
????import?flash.events.*;?
  
  
????import?flash.net.*;?
  
  
????import?flash.utils.*;?
  
  
????[Event(name="ioError",?type="flash.events.IOErrorEvent")]?
  
  
????[Event(name="complete",?type="flash.events.Event")]?
  
  
?????
  
  
????public?class?FileUpload?extends?EventDispatcher?
  
  
????{?
  
  
????????private?var?file:FileReference;?
  
  
?????????
  
  
????????private?var?_fileType:String="All";?
  
  
?????????
  
  
????????[Bindable]?
  
  
????????[Inspectable(category="General",?defaultValue="")]?
  
  
????????private?var?_file_name:String;?
  
  
?????????
  
  
????????[Bindable]?
  
  
????????[Inspectable(category="General",?defaultValue="")]?
  
  
????????private?var?_process_event:ProgressEvent;?
  
  
?????????
  
  
????????[Bindable]?
  
  
????????[Inspectable(category="General",?defaultValue="Image",?enumeration="Image,Word,Excel,Pdf,All")]?
  
  
????????public?function?get?fileType():String?
  
  
????????{?
  
  
????????????return?_fileType;?
  
  
????????}?
  
  
????????public?function?set?fileType(value:String):void?
  
  
????????{?
  
  
????????????this._fileType=value;?
  
  
????????}?
  
  
?????????
  
  
????????public?function?get?actualFileType():String?
  
  
????????{?
  
  
????????????return?file.type.substring(1,file.type.length);?
  
  
????????}?
  
  
?????????
  
  
????????public?function?FileUpload()?
  
  
????????{?
  
  
????????????file?=?new?FileReference();?
  
  
????????????configureListeners(file);?
  
  
????????}?
  
  
?????????
  
  
????????public?function?get?data():ByteArray{?
  
  
????????????if(file!=null)?
  
  
????????????{?
  
  
????????????????return?file.data;?
  
  
????????????}?
  
  
????????????return?null;?
  
  
????????}?
  
  
?????????
  
  
????????public?function?get?fileName():String?
  
  
????????{?
  
  
????????????return?_file_name;?
  
  
????????}?
  
  
?????????
  
  
????????public?function?get?processEvent():ProgressEvent?
  
  
????????{?
  
  
????????????return?_process_event;?
  
  
????????}?
  
  
?????????
  
  
????????public?function?browse():void?
  
  
????????{?
  
  
????????????file.browse(types);?
  
  
????????}?
  
  
?????????
  
  
????????private?function?configureListeners(dispatcher:IEventDispatcher):void?{?
  
  
????????????dispatcher.addEventListener(Event.CANCEL,?eventHandler);?
  
  
????????????dispatcher.addEventListener(Event.COMPLETE,?eventHandler);?
  
  
????????????dispatcher.addEventListener(HTTPStatusEvent.HTTP_STATUS,?eventHandler);?
  
  
????????????dispatcher.addEventListener(IOErrorEvent.IO_ERROR,?eventHandler);?
  
  
????????????dispatcher.addEventListener(Event.OPEN,?eventHandler);?
  
  
????????????dispatcher.addEventListener(ProgressEvent.PROGRESS,?progressHandler);?
  
  
????????????dispatcher.addEventListener(SecurityErrorEvent.SECURITY_ERROR,?eventHandler);?
  
  
????????????dispatcher.addEventListener(Event.SELECT,?selectHandler);?
  
  
????????????dispatcher.addEventListener(DataEvent.UPLOAD_COMPLETE_DATA,uploadCompleteDataHandler);?
  
  
????????}?
  
  
?????????
  
  
????????private?function?eventHandler(event:Event):void?{?
  
  
????????????this.dispatchEvent(event);?
  
  
????????}?
  
  
?????????
  
  
????????private?function?uploadCompleteDataHandler(event:DataEvent):void?{?
  
  
????????????trace("uploadCompleteData:?"?+?event.data);?
  
  
????????????_file_name=event.data?as?String;?
  
  
????????}?
  
  
?????????
  
  
????????private?function?progressHandler(event:ProgressEvent):void?{?
  
  
????????????this._process_event=event;?
  
  
????????}?
  
  
?????????
  
  
????????private?function?selectHandler(event:Event):void?{?
  
  
????????????_file_name?=?FileReference(event.target).name;?
  
  
????????????trace("selectHandler:?name="?+?_file_name);?
  
  
????????????file.load();?
  
  
????????}?
  
  
?????????
  
  
????????private?function?getImageTypeFilter():FileFilter?
  
  
????????{?
  
  
????????????return?new?FileFilter("Images?(*.jpg,?*.jpeg,?*.gif,?*.png)",?"*.jpg;*.jpeg;*.gif;*.png");?
  
  
????????}?
  
  
?????????
  
  
????????private?function?getWordTypeFilter():FileFilter?
  
  
????????{?
  
  
????????????return?new?FileFilter("Word?Files?(*.doc,?*.docx)",?"*.doc;*.docx");?
  
  
????????}?
  
  
?????????
  
  
????????private?function?getExcelTypeFilter():FileFilter?
  
  
????????{?
  
  
????????????return?new?FileFilter("Excel?Files?(*.xls,?*.xlsx)",?"*.xls;*.xlsx");?
  
  
????????}?
  
  
?????????
  
  
????????private?function?getPdfTypeFilter():FileFilter?
  
  
????????{?
  
  
????????????return?new?FileFilter("Pdf?Files?(*.pdf)","*.pdf");?
  
  
????????}?
  
  
?????????
  
  
????????private?function?get?types():Array?{?
  
  
????????????switch(_fileType)?
  
  
????????????{?
  
  
????????????????case?"Image":?
  
  
????????????????????return?new?Array(getImageTypeFilter());?
  
  
????????????????case?"Word":?
  
  
????????????????????return?new?Array(getWordTypeFilter());?
  
  
????????????????case?"Excel":?
  
  
????????????????????return?new?Array(getExcelTypeFilter());?
  
  
????????????????case?"Pdf":?
  
  
????????????????????return?new?Array(getPdfTypeFilter());?
  
  
????????????????default:?
  
  
????????????????????return?[getPdfTypeFilter(),getImageTypeFilter(),getWordTypeFilter(),getExcelTypeFilter()];?
  
  
????????????}?
  
  
????????????return?null;?
  
  
????????}?
  
  
????}?
  
  
}?
 
 

flex端

?

 
 

<fx:Declarations>?
  
  
<base:FileUpload?id="uploadFile"?complete="browsComplete()"/>?
  
  
</fx:Declarations>?
  
  
<fx:Script>?
  
  
private?function?uploadBrows(attachmentType:int):void?
  
  
????????????{?
  
  
????????????????if(loading)?
  
  
????????????????{?
  
  
????????????????????if(alert==null)?
  
  
????????????????????{?
  
  
????????????????????????alert=new?Alert;?
  
  
????????????????????????alert.title="文件上传提示";?
  
  
????????????????????????alert.text="文件上传中，请稍后";?
  
  
????????????????????}?
  
  
????????????????????PopUpManager.addPopUp(alert,?parent,?true);?
  
  
????????????????????PopUpManager.centerPopUp(alert);?
  
  
????????????????????return;?
  
  
????????????????}?
  
  
????????????????loading=true;?
  
  
????????????????this.attachmentType=attachmentType;?
  
  
????????????????if(attachmentType==8){?
  
  
????????????????????uploadFile.fileType="Image";?
  
  
????????????????}else{?
  
  
????????????????????uploadFile.fileType="All";?
  
  
????????????????}?
  
  
????????????????uploadFile.browse();?
  
  
????????????}?
  
  
//上传文件成功回调函数
 private function browsComplete():void
 {}
  
  
</fx:Script>?
  
  
<s:Button?left="108"?bottom="2"?width="45"?label="上传"?click="uploadBrows(8);"?
  
  
??????????????????????????enabled="{updateFlag||addFlag}"/>?