Bug 60991 – WebKit2: Needs API to set a custom drop target

• Component: WebKit2
• Status: RESOLVED FIXED

[Brian Weinstein]

WebKit2 needs an API to set a custom drop target for a view. It exists in WebKit1.

<rdar://problem/9090868>

[Brian Weinstein]

Created attachment 93821 [details]
[PATCH] Fix

[Adam Roben (:aroben)]

Comment on attachment 93821 [details]
[PATCH] Fix

View in context: https://bugs.webkit.org/attachment.cgi?id=93821&action=review

> Source/WebKit2/UIProcess/win/WebView.cpp:1128
> +void WebView::setCustomDropTarget(IDropTarget* dropTarget)
> +{
> +    ::RevokeDragDrop(m_window);
> +    ::RegisterDragDrop(m_window, dropTarget);
> +}

If someone passes in 0 here, we should set the drop target back to our standard one. Otherwise clients will have no way to clear their custom drop target.

[Brian Weinstein]

(In reply to comment #2)
> (From update of attachment 93821 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=93821&action=review
> 
> > Source/WebKit2/UIProcess/win/WebView.cpp:1128
> > +void WebView::setCustomDropTarget(IDropTarget* dropTarget)
> > +{
> > +    ::RevokeDragDrop(m_window);
> > +    ::RegisterDragDrop(m_window, dropTarget);
> > +}
> 
> If someone passes in 0 here, we should set the drop target back to our standard one. Otherwise clients will have no way to clear their custom drop target.

Fixed. New patch coming soon.

[Brian Weinstein]

Created attachment 93832 [details]
[PATCH] Fix v2

[Adam Roben (:aroben)]

Comment on attachment 93832 [details]
[PATCH] Fix v2

View in context: https://bugs.webkit.org/attachment.cgi?id=93832&action=review

> Source/WebKit2/UIProcess/win/WebView.cpp:1132
> +void WebView::setCustomDropTarget(IDropTarget* dropTarget)
> +{
> +    ::RevokeDragDrop(m_window);
> +
> +    if (dropTarget)
> +        ::RegisterDragDrop(m_window, dropTarget);
> +    else
> +        ::RegisterDragDrop(m_window, this);
> +}

This won't work correctly if m_window has been destroyed or the page has already been closed. We shouldn't do anything in those cases.

[Brian Weinstein]

Created attachment 93834 [details]
[PATCH] Fix v3

[Brian Weinstein]

Landed in r86717.