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Bug 345892

Summary: Selection jumps in tree
Product: [Eclipse Project] Platform Reporter: Markus Keller <markus.kell.r>
Component: SWTAssignee: Silenio Quarti <Silenio_Quarti>
Status: VERIFIED FIXED QA Contact:
Severity: major    
Priority: P3 CC: bokowski, cocoakevin, eclipse.felipe, gheorghe, grant_gayed, markus.kell.r, remy.suen, Silenio_Quarti, skovatch, snorthov
Version: 3.7Flags: eclipse.felipe: review+
gheorghe: review+
Target Milestone: 3.7 RC2   
Hardware: PC   
OS: Mac OS X   
Whiteboard:
Bug Depends on: 276531    
Bug Blocks:    
Attachments:
Description Flags
simple test case
none
patch none

Description Markus Keller CLA 2011-05-16 04:33:48 EDT 
+++ This bug was initially created as a clone of Bug #276531 +++

Bug 276531 is back in RC1 (I20110512-2000). Was OK in I20110428-0848.

Steps:

1. Open Preferences dialog
2. Make sure it comes up all collapsed, with the first item (General) selected. If not, select the first item, close the dialog, and open again.
3. Click on "Ant"

Expected: "Ant" gets selected
Actual: "Plug-in Development" gets selected.
Comment 1 Silenio Quarti CLA 2011-05-16 14:43:37 EDT 
Created attachment 195778 [details]
simple test case

The problem happens because the dialog is resized during the mouse down event. The coordinate system of the cocoa tree view is up side down, so making the tree taller changes the item that is under the mouse event.
Comment 2 Silenio Quarti CLA 2011-05-16 14:54:15 EDT 
Created attachment 195780 [details]
patch

This patch puts back the code from April 28 that was working around this problem. This is the safest fix at this point, but note that it does not completely fix it. If the user clicks far enough to the right of the item, the problem still happens.
Comment 3 Silenio Quarti CLA 2011-05-17 10:47:58 EDT 
Fixed in HEAD
Comment 4 Markus Keller CLA 2011-05-20 05:26:05 EDT 
Verified in I20110519-1138 that it works fine when you click the text.

(In reply to comment #2)
> If the user clicks far enough to the right of the item, the
> problem still happens.

It also happens when you click on the left of the triangle.