clipboard copy and paste in flex web application

In flex we can easily save our data to System clipboard by using System.setClipboard() method. For security reasons getting clipboard data from flex code is not allowed.

An alternate way to get the clipboard data to flex Application is through java script by ExternalInterface.call(). Once control was transferred to javaScript we can access the clipboard data and return it to flex Application. below is the attached code

CopyAndPaste.mxml








import mx.controls.Alert;
public function CopyToClipboard():void{
System.setClipboard(copyData.text);
}

public function PasteFromClipboard():void{
var str2:String=ExternalInterface.call("PasteFromClipboard");
pasteData.text=str2;
}
]]>



In index.template.html (flex generated html wrapper ) place the following code inside

function PasteFromClipboard()
{
var str=”"
var browser=navigator.appName;
if(browser==”Microsoft Internet Explorer”)
{
return (window.clipboardData.getData(‘Text’));
}
else if (window.netscape)
{
netscape.security.PrivilegeManager.enablePrivilege( ‘UniversalXPConnect’ );
this.clipboardid = Components.interfaces.nsIClipboard;
this.clipboard = Components.classes['@mozilla.org/widget/clipboard;1'].getService( this.clipboardid );
this.clipboardstring = Components.classes['@mozilla.org/supports-string;1'].createInstance( Components.interfaces.nsISupportsString );
netscape.security.PrivilegeManager.enablePrivilege( ‘UniversalXPConnect’ );
var transfer = Components.classes['@mozilla.org/widget/transferable;1'].createInstance( Components.interfaces.nsITransferable );
transfer.addDataFlavor( ‘text/unicode’ );
this.clipboard.getData( transfer, this.clipboardid.kGlobalClipboard );
var str = new Object();
var strLength = new Object();
transfer.getTransferData( ‘text/unicode’, str, strLength );
str = str.value.QueryInterface( Components.interfaces.nsISupportsString );
return str+”";
}
}

Note : Work only in Internet explorer and morzilla firefox

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