| [hyades-dev] odd editor behaviour |
|
Hi,
I have an implementation of an editor in eclipse
and when I start up two copies of it they appear in separate tabs as they
should. However, when I close one tab, it would appear that the editor
tab image gets disposed with it. This means that when I select the
other editor instance, I get errors from eclipse trying to draw a disposed tab
image.
I have appended an example of the exception at the
bottom of this email.
This doesn't happen with other editors such as the
text editor so it must be some problem with my editor, but I find it unlikely
that my editor (which never loads the image - it is only ever specified in the
plugin.xml) would somehow get a reference to the image and dispose of
it. The other possibility is that I am implementing my editor in such a
way that something else is erroneously disposing of the image. If this is
the case it would be far more difficult for me to track down as I have no idea
what could cause this to occur.
Does anyone know of any incorrect way I could
implement an editor or anything I could do wrong which might dispose of
the active editor tab image (other than directly disposing the image
itself). Is this perhaps even a bug that other editors have a workaround
for?
Thanks
Antony Miguel
Here is an example of the exception
thrown:
org.eclipse.swt.SWTException: Graphic is
disposed
at org.eclipse.swt.SWT.error(SWT.java:2332) at org.eclipse.swt.SWT.error(SWT.java:2262) at org.eclipse.swt.graphics.Image.getBounds(Image.java:1026) at org.eclipse.swt.custom.CTabItem.onPaint(CTabItem.java:350) at org.eclipse.swt.custom.CTabFolder.onPaint(CTabFolder.java:1196) at org.eclipse.swt.custom.CTabFolder.access$1(CTabFolder.java:1151) at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:198) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:81) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:840) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:865) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:849) at org.eclipse.swt.widgets.Composite.WM_PAINT(Composite.java:730) at org.eclipse.swt.widgets.Control.windowProc(Control.java:2811) at org.eclipse.swt.widgets.Display.windowProc(Display.java:2361) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1303) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1543) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1402) at org.eclipse.ui.internal.Workbench.run(Workbench.java:1385) at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:845) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.basicRun(Main.java:291) at org.eclipse.core.launcher.Main.run(Main.java:747) at org.eclipse.core.launcher.Main.main(Main.java:583) |