Handle drop to WebView: WebDragDestinationActionDHTML
Handle drop to WebView: WebDragDestinationActionDHTML
- Subject: Handle drop to WebView: WebDragDestinationActionDHTML
- From: Wayne Shao <email@hidden>
- Date: Wed, 27 Oct 2010 16:19:14 -0700
I would like to handle drop to WebView to not load the dropped object, but
to perform some customized action.
However, I ran into similar issues as described here:
http://lists.apple.com/archives/webkitsdk-dev/2005/May/msg00046.html
Basically, for these two callbacks in WebUIDelegate,
- A. – webView:dragDestinationActionMaskForDraggingInfo:<http://developer.apple.com/library/mac/documentation/Cocoa/Reference/WebKit/Protocols/WebUIDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/instm/NSObject/webView:dragDestinationActionMaskForDraggingInfo:>
-
- B. – webView:willPerformDragDestinationAction:forDraggingInfo:<http://developer.apple.com/library/mac/documentation/Cocoa/Reference/WebKit/Protocols/WebUIDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/instm/NSObject/webView:willPerformDragDestinationAction:forDraggingInfo:>
-
My question is: How can I return something other
than WebDragDestinationActionLoad in A and still have a chance to process
the data in method B?
Currently, the issues are:
- If I return WebDragDestinationActionDHTML, B is never called.
- If return WebDragDestinationActionLoad, B is called, but I do not want
to load the dropped resource. I want to customize it by extracting data and
update the current resource in WebView.
- Another option is to do the custom data extraction in A and
return WebDragDestinationActionNone. But the callback A is invoked multiple
times during a drag/drop operation, I need to only process it once at the
last callback. i.e., the correct place to do it is in callback method B.
Any solutions?
Thanks,
--
W. Shao
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