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?
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" fontSize="13" creationComplete="init()" xmlns:e="cpt.*" >
<mx:Script>
<![CDATA[
import com.havenliu.event.DeleteEvent;
import cpt.deletebtn;
import mx.events.CloseEvent;
import mx.collections.ArrayCollection;
import mx.controls.Alert;
import flash.profiler.showRedrawRegions;
import mx.controls.ProgressBar;
?
//最大上传文件数
private var maxFiles:int=5;
//最大上传文件大小(M)
private var maxSize:Number=50;
public var fileList:FileReferenceList = new FileReferenceList();
?
private var fileSize:Number=0;
//后台接受附件的地址，这里是一个servlet，你可以自己定义为jsp、php、asp、action等
private var uploadurl:URLRequest = new URLRequest("http://localhost:8080/MyUpload/UploadFile");
[Bindable]
private var files:ArrayCollection=new ArrayCollection();
?
private function init():void{
//附件选择监听器
fileList.addEventListener(Event.SELECT,selectHandler);
//给“添加”按钮注册监听器
browse.addEventListener(MouseEvent.CLICK,browseHandler);
//删除附件按钮注册监听器
deleteAll.addEventListener(MouseEvent.CLICK,resetHandler);
buttonState();
}
?
private function selectHandler(event:Event):void
{
var countfiles:int=files.length+fileList.fileList.length;
var countsize:Number=0;
//计算总附件大小
for each(var _file:FileReference in fileList.fileList)
{
countsize+=_file.size;
}
countsize+=fileSize;
if(countfiles>maxFiles)
{
Alert.show("一次最大只能上传"+maxFiles+"个附件");
}else if(countsize>maxSize*(1024*1024))
{
Alert.show("附件大小不能超过"+maxSize+"M");
}else
{
for each(var file:FileReference in fileList.fileList)
{
if(!checkDitto(file))
{
files.addItem(file);
refreshText();
buttonState();
}
}
}
}
?
private function browseHandler(event:Event):void
{
//这里没有过滤文件类型，即所有文件都可以上传，实际开发中，为了安全考虑可能需要过滤
var fileType:FileFilter=new FileFilter("文件类型(*.*)","*.*");
var allTypes:Array = new Array(fileType);
fileList.browse(allTypes);
}
private function resetHandler(event:Event):void
{
Alert.show("您确定要删除全部附件？","提示信息",Alert.YES|Alert.NO,fileGrid,alertHandler,null,Alert.NO);
function alertHandler(event:CloseEvent):void
{
if(event.detail==Alert.YES)
{
files.removeAll();
refreshText();
buttonState();
}
}
}
//更新Text文本信息
private function refreshText():void
{
//重新统计附件大小，将原来的信息清0
fileSize=0;
for(var i:int=0;i<files.length;i++)
{
fileSize+=FileReference(files[i]).size;
}
msg.text="共计"+files.length+"个附件，文件总大小："+(fileSize/(1024*1024)).toString().slice(0,4)+"M (最大上传5个附件，总大小不超过50M)";
}
//控制按钮状态
private function buttonState():void
{
if(files.length<1)
{
upload.enabled=false;
deleteAll.enabled=false;
}else
{
upload.enabled=true;
deleteAll.enabled=true;
}
if(files.length>=maxFiles)
{
browse.enabled=false;
}else
{
browse.enabled=true;
}
}
private function uploadfile():void
{
if(files.length>0)
{
for(var i:int=0;i<files.length;i++)
{
var file:FileReference=files[i] as FileReference;
try{
file.addEventListener(Event.COMPLETE,uploadok);
// file.addEventListener(ProgressEvent.PROGRESS,uploadstart);
file.upload(uploadurl);
}catch(error:Error)
{
Alert.show("上传失败",error.message);
}
}
//文件全部上传完成后，上传和全部删除按钮变为灰色
upload.enabled=false;
deleteAll.enabled=false;
browse.enabled=false;
}
}
?
//判断文件是否重复
private function checkDitto(file:FileReference):Boolean
{
var result:Boolean=false;
for (var i:int=0;i<files.length;i++)
{
var _file:FileReference=files[i];
//如果选择文件的名字、大小和最后修改时间完全一样，则这两个文件重复
if(file.name==_file.name||file.modificationDate==_file.modificationDate||file.size==_file.size)
{
result= true;
break;
}
else
{
result= false;
}
}
return result;
}
public function deleteFile(data:Object):void
{
var indexNo:int=files.getItemIndex(data as FileReference);
files.removeItemAt(indexNo);
refreshText();
buttonState();
}
?
public function probar(event:Event,data:Object):void
{
var probar:ProgressBar=event.target as ProgressBar;
probar.label = "%3%%";
probar.setProgress(0,100);
var file:FileReference=data as FileReference;
file.addEventListener(ProgressEvent.PROGRESS,function(event: ProgressEvent): void
{
probar.setProgress(event.bytesLoaded,event.bytesTotal);
});
?
}
private function uploadok(event:Event):void
{
var file: FileReference = event.target as FileReference;
file.removeEventListener(Event.COMPLETE,uploadok);
trace("上载完成");
?
}
// private function uploadstart(event:Event):void
// {
// trace("上载开始");
// }
public function deletefile(event:DeleteEvent):void
{
var delfile:FileReference=event.file;
deleteFile(delfile);
}
?
]]>
</mx:Script>
<mx:Panel width="500" height="300" layout="absolute" title="多文件上传组件">
<mx:VBox width="100%" height="100%" x="0" y="0">
<mx:DataGrid id="fileGrid" width="100%" dataProvider="{files}">
<mx:columns>
<mx:DataGridColumn headerText="文件名" dataField="name" />
<mx:DataGridColumn width="80" headerText="大小(字节)" dataField="size"/>
<mx:DataGridColumn width="120" headerText="上传进度" dataField="loadRate" sortable="false" ><mx:itemRenderer>
<mx:Component>
<mx:HBox fontSize="10" fontWeight="normal" fontThickness="1">
<mx:ProgressBar verticalCenter="true" width="100%" paddingLeft="5" paddingRight="5"
maximum="100" minimum="0" labelPlacement="center" mode="manual"
label="%3%%" textAlign="left" creationComplete="outerDocument.probar(event,data)"/>
</mx:HBox>
</mx:Component>
</mx:itemRenderer>
</mx:DataGridColumn>
<mx:DataGridColumn headerText="删除" sortable="false" >
<mx:itemRenderer>
<mx:Component>
<e:deletebtn tarfile="{data as FileReference}" delFile="outerDocument.deletefile(event)">
</e:deletebtn>
</mx:Component>
</mx:itemRenderer>
</mx:DataGridColumn>
</mx:columns>
</mx:DataGrid>
<mx:HBox width="100%" height="39">
<mx:Spacer/>
<mx:Button id="browse" label="添加..." textAlign="right"/>
<mx:Button id="upload" label="上传" click="uploadfile()" textAlign="right"/>
<mx:Button id="deleteAll" label="全部删除" textAlign="right"/>
</mx:HBox>
<mx:Text id="msg" text="共计0个附件，文件总大小：0M (最大上传5个附件，总大小不超过50M)" fontSize="12" fontFamily="Arial"/>
</mx:VBox>
</mx:Panel>
?
</mx:Application> |
