Bug 18693 – Cmd-B and Cmd-I events cannot be overriden by JavaScript in editor mode.

• Component: HTML Editing
• Status: NEW

[Martin Kou]

When editor mode is enabled, it is impossible to receive the keydown events of Meta-B and Meta-I in JavaScript. This is a serious problem for implementing web based editors because it is often desirable to implement custom logic for the hotkeys instead of always following the browser's default.

To reproduce the issue:
1. Open the attached HTML test case.
2. Click in the iframe area, a caret should appear indicating the area is editable.
3. Press any Meta combination that's not Meta-I or Meta-B, the correct keycode should be printed out in the editing area.
4. Press Meta-I or Meta-B, the keycode is not printed out indicating the JavaScript logic failed to receive the events.

[Martin Kou]

Created attachment 20765 [details]
Test case

[Martin Kou]

This issue is causing the bug https://dev.fckeditor.net/ticket/1701 in FCKeditor.

[Alexey Proskuryakov]

Confirmed with r32635. IE allows JavaScript to cancel default processing for these events.

Similarly perhaps, Command-I cannot be used in Safari to invoke the Mail Contents of This Page command when in editable text (<rdar://problem/5845299>).

[Alexey Proskuryakov]

*** Bug 25604 has been marked as a duplicate of this bug. ***

[Eric Seidel (no email)]

I looked into this a little yesterday.  We're short-circuiting handling of these events.  I didn't quite know how to hook into the NSResponder/NSTextField model in order to process the key events at the right time however.  It seems we might have to implement our own processKeyEvents: which is called from the EditorClient handleKeyEvent callback.  I should post actual stack traces in the bug for more intelligent discussion.