- From: Thomas Broyer <t.broyer@gmail.com>
- Date: Wed, 18 Jun 2008 23:31:48 +0200
On Wed, Jun 18, 2008 at 4:46 PM, Neil Deakin wrote: > The initDragEvent/initDragEvent methods take a DataTransfer as an argument. > Is it expected that the DataTransfer to use here can be created with 'new > DataTransfer'? > > IE and Safari allow a no-argument form of clearData as well which clears all > formats. FWIW, Adobe AIR's Clipboard (which is equivalent to the DataTransfer object) has a clear() no-argument method. See: http://livedocs.adobe.com/flex/3/langref/flash/events/NativeDragEvent.html http://help.adobe.com/en_US/AIR/1.1/jslr/flash/desktop/Clipboard.html > The description for the 'types' property implies that this should be a live > list. Why? Maybe so that you can keep a reference to it while setData/clearData is being called? But couldn't you just keep a reference to the DataTransfer object? It seems that IE doesn't have such a property. Adobe AIR's WebKit does, but how about Safari? > The clearData, setData and getData methods should clarify what happens if an > empty format is supplied. For my personal culture, what happens in IE and Safari? > I still don't understand the purpose of the addElement method. I think addElement is there to allow e.g. "dialog boxes" where the box can be dragged using its "title bar": only the title-bar is draggable but ondragstart it adds the whole dialog box to the list of what is being dragged... > Either this > should be removed or there should be clarification of the difference between > addElement and setDragImage setDragImage is only about the "drag feedback", not "what is being dragged", if I understand correctly... > Previously, I said that DragEvents should be UIEvents. I think they should > instead inherit from MouseEvent. FWIW, NativeDragEvent in Adobe AIR inherits MouseEvent. > We have a need to be able to support both dragging multiple items, as well > as dragging non-string data, for instance dragging a set of files as a set > of File objects (see http://www.w3.org/TR/file-upload/) from the file system > onto a page. That would be new data formats. That's how Adobe AIR solved the problem. They added a Bitmap and File list data formats, for which getData returns AIR-specific objets (a BitmapData and an array of File objects respectively) http://help.adobe.com/en_US/AIR/1.1/jslr/flash/desktop/ClipboardFormats.html http://livedocs.adobe.com/air/1/devappshtml/DragAndDrop_2.html#1048911 > For this, we would also like to propose methods like the following, which > are analagous to the existing methods (where Variant is just any type of > object): I don't see a real need for them (others didn't need them while providing the same features) and they wouldn't be backwards compatible with IE and Safari, while AFAIK the current draft is. -- Thomas Broyer
Received on Wednesday, 18 June 2008 14:31:48 UTC