Description Konstantin Komissarchik 2010-06-15 23:13:58 EDT

If the user goes to select text in FormText control and ends up with empty selection, the control doesn't always realize that no selection happened. It might take a few tries to reproduce this. I found that it helps to start selection and then move slightly down (not enough to go to the next line) before ending the selection. 

You can tell that the control thinks there is a selection present by the fact that Copy menu item is enabled. It might take a few tries to get into this state, but once you are there invoking Copy causes the following exception:

java.lang.IllegalArgumentException: Argument not valid
at org.eclipse.swt.SWT.error(SWT.java:3865)
at org.eclipse.swt.SWT.error(SWT.java:3799)
at org.eclipse.swt.SWT.error(SWT.java:3770)
at org.eclipse.swt.dnd.DND.error(DND.java:282)
at org.eclipse.swt.dnd.DND.error(DND.java:228)
at org.eclipse.swt.dnd.Clipboard.setContents(Clipboard.java:480)
at org.eclipse.swt.dnd.Clipboard.setContents(Clipboard.java:411)
at org.eclipse.ui.forms.widgets.FormText.copy(FormText.java:1085)
at
org.eclipse.ui.forms.widgets.FormText$10.widgetSelected(FormText.java:920)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3910)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3503)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.ja
va:113)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:19
4)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(Ec
lipseAppLauncher.java:110)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppL
auncher.java:79)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)