Re: Drop on WebView?

Subject: Re: Drop on WebView?

From: George Orthwein <email@hidden>

Date: Fri, 24 Feb 2006 15:04:37 -0500

Delivered-to: email@hidden

On Feb 22, 2006, at 5:50 AM, Benjamin Miller wrote:

Is it possible to drop any pboard type onto a WebView?

I believe so. Check out:

/Developer/Examples/Dashboard/Dropper/

Also for reference:

http://developer.apple.com/documentation/AppleApplications/Conceptual/SafariJSProgTopics/Tasks/DragAndDrop.html

You'll also need to implement some Webview UI Delegates (first one optional):

- (unsigned) webView:(WebView *)sender dragDestinationActionMaskForDraggingInfo:(id <NSDraggingInfo>)draggingInfo

- (void)webView:(WebView *)sender willPerformDragDestinationAction:(WebDragDestinationAction)action forDraggingInfo:(id <NSDraggingInfo>)draggingInfo

However, by default, images and html files dropped onto a Webview will cause the view to reload them as the new source. I'm not sure of the best way to prevent this.

I ended up returning WebDragDestinationActionDHTML for the "dragDestinationActionMaskForDraggingInfo" delegate and included the _javascript_ functions in the Dropper example. This works and I can handle the drop in the "willPerformDragDestinationAction" delegate. An undesirable side-effect is that drops are only accepted if they are over the rendered <body> of the page. In other words, if you have a page with only a few sentences, then drops outside the rendered area (below those sentences) are inactive. This makes some sense since I'm using WebDragDestinationActionDHTML but I'd like the entire Webview to accept drops. This would be especially problematic for an empty Webview.

I tried returning (WebDragDestinationActionAny & ~WebDragDestinationActionLoad) without success either. I think WebDragDestinationActionLoad may be required to enable a non-editable webview to recognize a drop anywhere, but there must be some way of suppressing the load action.

I'd be pleased if anyone can shed some light on this.

Thanks,

george

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References:

>Drop on WebView? (From: Benjamin Miller <email@hidden>)