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Bug 185817

Summary:

MouseListener (with count for e.g. 2) on Linux-Gtk

Product:

[Eclipse Project] Platform

Reporter:

Thomas Schindl <tom.schindl>

Component:

SWT

Assignee:

Platform-SWT-Inbox <platform-swt-inbox>

Status:

CLOSED WORKSFORME

QA Contact:

Severity:

normal

Priority:

CC:

ericwill, ipun, pinnamur, snorthov

Version:

3.3

Keywords:

triaged

Target Milestone:

---

Hardware:

Other

OS:

Linux

See Also:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=510803

Whiteboard:

Bug Depends on:

Bug Blocks:

184346

Attachments:

Description	Flags
Snippet to try out	none
Patch	none

Description Thomas Schindl

2007-05-07 13:40:48 EDT

When trying to activate an editor on Linux-Gtk by registering an MouseListener and activating when the MouseEvent.count == 2 the editor looses focus directly after the activation because an FocusOut-Occurs on the Text-Control. This an GTK only issue and works on WinXP and MacOSX. By the way if you use mouseDoubleClick() instead the activation works on Linux-Gtk. Snippet attached

Comment 1 Thomas Schindl

2007-05-07 13:41:50 EDT

Created attachment 66160 [details]
Snippet to try out

Comment 2 Praveen

2009-05-12 01:51:42 EDT

Created attachment 135272 [details]
Patch

We used to grab the focus onto Table for every button-press-event. Due to this, though user tries to assign the focus to Text in editor, the focus is being grabbed by Table. 
For every double-click, 3 events are generated- 2 button-press-events for single-click and a button-press-event for double-click. As we post the event for 2nd button-press-event (clickCount is 2), editor is created in the eventHandler code. Then, another button-press-event of Double-click is generated, at which we incorrectly grab the focus to table.
The fix is to grab the focus on only button-press-event of single-click. The same rule applies for List and Tree also.

Bogdan, the fix works well for single/double-click events. However, while I was testing, I realize that it does not work for triple-click (the focus is reassigned back to table). After the editor is created, Text loses the focus and assigns it back to Table. I was not able to spot the code that grabs the focus to table. I've seen only focus-out (for Text) event generated after triple-click. I'm not quite sure whether this is native behaviour or not. Can you suggest whether I miss anything here ? Thanks!

Comment 3 Eric Williams

2016-10-09 10:29:19 EDT

This is still reproducible.

Comment 4 Eric Williams

2019-02-20 14:02:38 EST

(In reply to Eric Williams from comment #3)
> This is still reproducible.

I cannot reproduce this issue any longer using SWT from master, GTK3.24, and Fedora 29.