Bug 70077 [typing] Copy/paste doesn't work occasionally
Hi. When I do the copying/pasting, something seems strange: I'm editing the Java source code, and want to copy some lines of code to another place, I selected the lines, about 15-line, press Ctrl-C, and then move to the paste place, and press Ctrl-V, and just nothing happened. I've tried several time, and tried to use mouse and right-button-menu for the copy/paste, the results are the same. And I also tried to copy/paste only one line, it sometimes works, but not always. With multiple lines copy/paste, it sometimes works too. I'm using the Eclipse 3, Windows 2000 pro, JDK 1.4.2, Lomboz.3rc2(before), Lomboz 3(now).
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/ClipboardOperationAction.java
public void update() {
		super.update();
		
		if (!isReadOnlyOperation() && !canModifyEditor()) {
			setEnabled(false);
			return;
		}
		
		ITextEditor editor= getTextEditor();
		if (fOperationTarget == null && editor!= null && fOperationCode != -1)
			fOperationTarget= (ITextOperationTarget) editor.getAdapter(ITextOperationTarget.class);
			
		boolean isEnabled= (fOperationTarget != null && fOperationTarget.canDoOperation(fOperationCode));
		setEnabled(isEnabled);
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.ui.texteditor.TextEditorAction#setEditor(org.eclipse.ui.texteditor.ITextEditor)
	 */
	public void setEditor(ITextEditor editor) {
		super.setEditor(editor);
		fOperationTarget= null;
	}
	
	
	private void doCutCopyWithImportsOperation() {
		ITextEditor editor= getTextEditor();
		IJavaElement inputElement= (IJavaElement) editor.getEditorInput().getAdapter(IJavaElement.class);
		ISelection selection= editor.getSelectionProvider().getSelection();