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Bug 345012

Summary:	CCE thrown with the 'VNC Viewer' view
Product:	z_Archived	Reporter:	Remy Suen <remy.suen>
Component:	Sequoyah	Assignee:	TmL Inbox <vncviewer.sequoyah-inbox>
Status:	RESOLVED WORKSFORME	QA Contact:
Severity:	major
Priority:	P3	CC:	kpqb38, Lars.Vogel, mirko, nkvg64, pwebster, wmg040
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Windows All
Whiteboard:
Bug Depends on:
Bug Blocks:	345008

Description Remy Suen

2011-05-06 14:40:54 EDT

I believe this is because SWTRemoteDisplay arbitrarily sets its own layout to be the same as its parent's layout. In this case, the parent is a ScrolledComposite so its layout becomes a ScrolledCompositeLayout.

Each composite should decide what it wants to use to layout its children (if any) and not just randomly reuse the same layout (and same instance) as whatever its parent is using.

This problem pretty much makes Eclipse unusable because the CCE will keep happening whenever we need to layout the view.

java.lang.ClassCastException: org.eclipse.sequoyah.vnc.vncviewer.graphics.swt.img.SWTRemoteDisplayImg cannot be cast to org.eclipse.swt.custom.ScrolledComposite
	at org.eclipse.swt.custom.ScrolledCompositeLayout.layout(ScrolledCompositeLayout.java:50)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1263)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1270)
	at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1249)
	at org.eclipse.swt.widgets.Composite.setLayoutDeferred(Composite.java:1086)
	at org.eclipse.swt.widgets.Display.runDeferredLayouts(Display.java:4187)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3745)

Comment 1 Daniel Drigo Pastore

2011-09-08 15:35:53 EDT

Hi Remy,

we investigated this issue, but could not reproduce it.
Could you please give us more information on how you are trying to use it?

Thanks,
Daniel Pastore

Comment 2 Remy Suen

2011-09-08 16:03:21 EDT

(In reply to comment #1)
> we investigated this issue, but could not reproduce it.

This problem will manifest itself if you use the 'VNC Viewer' view plug-in on Eclipse 4.x.

Comment 3 Daniel Drigo Pastore

2011-09-09 09:01:00 EDT

Hi Remy,

Well, our focus now would be for 3.7 SR1, so we can't address this bug right now.
As soon as we have some news for this, we'll announce it then.

Thanks for reporting this bug,

Daniel Pastore
Sequoyah Team

Comment 4 Eric Moffatt

2012-01-30 14:57:54 EST

Ping ! we're going into M6, is there any update on this ?

Comment 5 Remy Suen

2012-03-02 16:17:02 EST

Still getting this error with I20120229-2200 on Windows 7.

When I try to open the view, the 'Console' view also seems to automatically spawn although that view also seems to be broken in some way.

Comment 6 Mirko Raner

2012-10-30 14:01:39 EDT

I'm getting the exact same issue with Juno build 20120614-1722/Sequoyah 2.1.0.N20120718-0509.
All that is needed to reproduce this problem is attempting to connect to a VNC server.

Comment 7 Lars Vogel

2019-01-14 03:51:16 EST

Please reopen if this is still relevant