By default, you can drag text (or even files) onto textarea, however, this action does not trigger the
Steps to reproduce:
* select arbitrary text
* drop onto the textarea
* logging the action via the scripted ondrop event
Assigned to Darin Adler for similarities to bug#3256
Created attachment 2413 [details]
Testcase - drop text onto the textarea
I would add that it's not just onDrop, but any drag event (ondragover, ondragenter, ondragleave). Strangely only the border of the textarea (the 1 pixel line around the textarea) seems to fire these events but the body of the textarea does not.
Also positioning elements above a textarea (absolutely positioned) causes events not to fire on that element either (seems as if the textarea below the elements is intercepting and sinking the events). Dropping text on a div, absolutely positioned above a textarea causes the text to appear in the textarea (instead of being handled by the upper element).
drop also seems to never fire for contentEditable regions.
The test case (<https://bugs.webkit.org/attachment.cgi?id=2413>) is invalid, because it does not listen for the dragenter and dragover events as required by section 7.9.1 of the HTML 5 spec, <http://dev.w3.org/html5/spec/Overview.html#introduction-4>. In particular, the spec. states, "to accept a drop, the drop target has to listen to at least three events: [dragenter, dragover, and drop]".
When the above prerequisite is satisfied, we do not ignore ondrop events to textareas. Moreover, dragenter, dragover, and drop events are all delivered to the textarea.
Actually, we fire the ondrop event so long as the textarea is listening for dragover events. We should probably file a separate bug to make dragenter also required.
Created attachment 43973 [details]
Dan's analysis makes sense to me.