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Can't create another side-by-side editor anymore by taking the file and dragging it to the left side of the current editor view. The screen flickers briefly, changing to the blue color, and also nothing happens when releasing the mouse. This used to be fine in M6, seems to be broken in M7 now.
Dragging to right side also doesn't seem to work anymore. Dragging it down detaches it (not sure if that is desired behavior or not).
This is observed on CDT version of Eclipse Luna M7, in case it matters.
Can anyone confirm this? I think this is quite major.
There's a known defect that prevents the *feedback* from showing up on Linux but our tests here show that it does work. If you have an editor area with let's say 3 open editors A, B & C...if you drag one of the tabs and position the cursor to the center of the editor vertically and 1/4 the way from the left edge of the editor and release what happens ?
Nothing happens. My screen gets the blue overlay just like it should, but when releasing the mouse nothing happens. Also, the blue overlay used to indicate where the dragged editor will end up, but now it just covers the entire screen.
Is there a workaround for now? Is there another way I can open an editor side-by-side? Keyboard shortcut maybe?
We'll check this on Paul's machine when he's available. Is there anybody else where you are with a similar setup that could try to sse if there results match. You might also try a different CSS Theme to see if there's a difference...
Tried different themes and palettes, no avail. As a workaround, for now I can drag the editor tab to where the outline view is, that still works.
Thanks but...YUK ! We'll take a look at this tomorrow. Is there anything in your Error Log view or the .log file ? Maybe we're blowing up showing he feedback and killing the 'drop' operation...
I can see this error tRACE here. Doesn't happen all the time though, but it's definitely related. java.lang.NullPointerException at org.eclipse.e4.ui.workbench.addons.dndaddon.DetachedDropAgent.drop(DetachedDropAgent.java:60) at org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent.dragFinished(DragAgent.java:159) at org.eclipse.e4.ui.workbench.addons.dndaddon.PartDragAgent.dragFinished(PartDragAgent.java:111) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.finishDrag(DnDManager.java:276) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.startDrag(DnDManager.java:243) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager$1.dragDetected(DnDManager.java:87) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:127) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4462) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1388) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3806) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3416) at org.eclipse.jface.window.Window.runEventLoop(Window.java:832) at org.eclipse.jface.window.Window.open(Window.java:808) at org.eclipse.ui.internal.views.log.EventDetailsDialog.open(EventDetailsDialog.java:181) at org.eclipse.ui.internal.views.log.EventDetailsDialogAction.run(EventDetailsDialogAction.java:98) at org.eclipse.ui.internal.views.log.LogView$15.doubleClick(LogView.java:536) at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:831) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178) at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:828) at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1472) at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1237) at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:252) at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:249) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:311) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4462) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1388) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3806) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3416) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1152) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1033) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:635) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:578) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:379) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:233) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
I just tried it out on a colleague's PC that pretty much runs the same setup as me (running Eclipse on Linux, the GUI is on Windows via Exceed). On his PC, strangely it works somewhat, but the behavior is pretty erratic, the editor often becomes detached completely. Not sure why it doesn't work at all on mine, but there is definitely some issue.
Tried out RC1, same issue there.
Anybody working on this? This would be a very bad bug to make it to the final release. Tried out Eclipse CDT 4.4.0 RC1, still same issue there, not surprisingly. I found out there is a spot somewhere on the edge that will actually to a split. But I have to try about 50-100 times before it works, so it's very annoying. Along the way, I get plenty of the following error traces. Also, the editor widget looks pretty weird now, the tabs seem to have once full height, once only half height. java.lang.NullPointerException at org.eclipse.e4.ui.workbench.addons.dndaddon.DetachedDropAgent.drop(DetachedDropAgent.java:60) at org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent.dragFinished(DragAgent.java:159) at org.eclipse.e4.ui.workbench.addons.dndaddon.PartDragAgent.dragFinished(PartDragAgent.java:111) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.finishDrag(DnDManager.java:276) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.startDrag(DnDManager.java:243) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager$1.dragDetected(DnDManager.java:87) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:127) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4462) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1388) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3806) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3416) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1152) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1033) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) ...
Was there a text editor widget change between M6 and M7?
With the RC2 candidate, you can now see feedback on linux again. Can you try your usecase on http://download.eclipse.org/eclipse/downloads/drops4/I20140522-1330/ ? I tried it here and it worked fine. PW
Just tried, it's still broken: eclipse.buildId=4.4.0.I20140522-1330 java.version=1.7.0_10 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Command-line arguments: -os linux -ws gtk -arch x86_64 java.lang.NullPointerException at org.eclipse.e4.ui.workbench.addons.dndaddon.DetachedDropAgent.drop(DetachedDropAgent.java:60) at org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent.dragFinished(DragAgent.java:159) at org.eclipse.e4.ui.workbench.addons.dndaddon.PartDragAgent.dragFinished(PartDragAgent.java:111) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.finishDrag(DnDManager.java:276) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.startDrag(DnDManager.java:243) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager$1.dragDetected(DnDManager.java:87) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:127) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4487) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1388) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3831) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3441) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1152) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1033) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:379) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:233) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
(In reply to Sascha Konrad from comment #16) > Just tried, it's still broken: > Thanks for trying again. So what's going on here? When I drag an editor towards the left side of the editor area, I see the split DND feedback. If I drop the editor in the center of the left split pane, I get 2 editors (and no errors). PW
(In reply to Paul Webster from comment #17) > > So what's going on here? When I drag an editor towards the left side of the > editor area, I see the split DND feedback. If I drop the editor in the > center of the left split pane, I get 2 editors (and no errors). I meant to ask a question :-) Do you see the split feedback now? Do you get that error when you drop your editor in the centre of left hand split? PW
I see the feedback in the RC2 candidate just the same as in RC1. It flickers, and it seems to sometimes tell me that if I drop it, it will split, but then releasing it does nothing and logs the error trace. Like I said, if I try 100 times, I can get it to split, but then it also looks weird (see attachment). Is that expected? Tabs are very small now, and there is a white line above them.
Created attachment 243449 [details] Weird looking tabs after split
Yes, the tab part is correct. PW (In reply to Sascha Konrad from comment #16) > Just tried, it's still broken: > > eclipse.buildId=4.4.0.I20140522-1330 > java.version=1.7.0_10 The other thing I would suggest (although it might not make a difference) is updating your java. Anything before 1.7.0_25 is suspect, and AFAIK they're up past 1.7.0_51 Also, could attach your <workspace>/.metadata/.plugins/org.eclipse.e4.workbench/workbench.xmi Maybe it's something specific to your workspace that kills it. PW
Just updated Java, still same issue. eclipse.buildId=4.4.0.I20140515-1230 java.version=1.7.0_55 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -product org.eclipse.epp.package.cpp.product Command-line arguments: -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.cpp.product Don't want to attach my entire workbench.xmi, it seems to have some sensitive information in there. Anything specific I should look for?
Ok, I tracked it down a little bit further. I am running Eclipse on a remote Linux server, and I am using an Exceed on Demand X server on my windows machine to display the GUI. When I have Exceed set to use the Native (Windows) window manager, then I have the issue. When I switch to use the MWM window manager, then splitting works normally. Using MWM window manager is not really an option though, it's quite archaic and a pain.
I realize that may be hard to reproduce, but maybe there is some tweaking that can be done, since it was working without issues until M6.
Sascha, we can reproduce the problem since we don't have access to that environment. Can you debug it? Find out what is causing the NPE? Is it the org.eclipse.e4.ui.workbench.addons.dndaddon.DetachedDropAgent.curRect? Then can you find out when that's set to null? What call is doing that? PW
(In reply to Paul Webster from comment #25) > Sascha, we can reproduce the problem since we don't have access to that > environment. That's "we can't reproduce the problem"
I haven't tried to debug Eclipse before, if there are some instructions on how to get Eclipse running in the debugger I would appreciate that. I have found a workaround for my problem now. I can run mwm in my console, which temporarily switches Eclipse to the mwm window manager. Then I can do the split, and then exit out of mwm to return to native window manager again. While this works, it's less from ideal.
Bug confirmed still present on Mars.2 (4.5.2), under Ubuntu 15.10, default "Unity" window manager.
My patch for bug 492842 also addresses an intermittent issue that would interfere with editor splitting. After the patch gets into a build, I'd be interested in hearing from one of the reporters to see if it's the same problem they were seeing here.
I believe this is fixed. Please reopen if you don't see the fix in RC1.
Marking as duplicate so that anyone discovering this can trace the problem to the fix. *** This bug has been marked as a duplicate of bug 492842 ***
