Bug 97810 [preferences] Code template preference page buttons are not grayed out if invoked as project specific property page
3.1 RC1 Steps to reproduce: - Invoke Override Method on a project with no project-specific settings - Follow link to code template preference page -> Edit, Import, ... buttons are disabled, but not grayed out -> Toggling 'Enable project specific settings twice correctly grays out the buttons
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/dialogfields/TreeListDialogField.java
}
	
	/*
	* @see DialogField#dialogFieldChanged
	*/
	public void dialogFieldChanged() {
		super.dialogFieldChanged();
		updateButtonState();
	}
	/*
	* Updates the enable state of the all buttons
	*/
	protected void updateButtonState() {
		if (fButtonControls != null) {
			ISelection sel= fTree.getSelection();
			for (int i= 0; i < fButtonControls.length; i++) {
				Button button= fButtonControls[i];
				if (isOkToUse(button)) {
					button.setEnabled(isButtonEnabled(sel, i));
				}
			}
		}
	}
	
	
	protected boolean containsAttributes(List selected) {
		for (int i= 0; i < selected.size(); i++) {
			if (!fElements.contains(selected.get(i))) {
				return true;
			}