Bug 44535 [misc] Wrong message displayed while opening a class file outside classapth
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/ClassFileEditor.java
}
			
			public boolean requestWidgetToken(IWidgetTokenKeeper requester, int priority) {
				if (WorkbenchHelp.isContextHelpDisplayed())
					return false;
				return super.requestWidgetToken(requester, priority);
			}
		};	
	}
	
	/*
	 * @see org.eclipse.ui.IWorkbenchPart#dispose()
	 */
	public void dispose() {
		
		IDocumentProvider documentProvider= getDocumentProvider();
		if (documentProvider instanceof ClassFileDocumentProvider)
			((ClassFileDocumentProvider) documentProvider).removeInputChangeListener(this);
		super.dispose();
	}
	/*
	 * @see org.eclipse.ui.IWorkbenchPart#setFocus()
	 */
	public void setFocus() {
		super.setFocus();
		if (fSourceAttachmentForm != null && !fSourceAttachmentForm.isDisposed())
			fSourceAttachmentForm.setFocus();
	}
}