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
* Sets the index of the 'up' button in the button label array passed in the
	* constructor. The behavior of the button marked as the 'up' button will
	* then be handled internally.
	* (enable state, button invocation behavior)
	*/
	public void setUpButtonIndex(int upButtonIndex) {
		Assert.isTrue(upButtonIndex < fButtonLabels.length);
		fUpButtonIndex= upButtonIndex;
	}
	/**
	* Sets the index of the 'down' button in the button label array passed in
	* the constructor. The behavior of the button marked as the 'down' button
	* will then be handled internally. (enable state, button invocation
	* behavior)
	*/
	public void setDownButtonIndex(int downButtonIndex) {
		Assert.isTrue(downButtonIndex < fButtonLabels.length);
		fDownButtonIndex= downButtonIndex;
	}
	/**
	* Sets the viewerSorter.
	* @param viewerSorter The viewerSorter to set
	*/
	public void setViewerSorter(ViewerSorter viewerSorter) {
		fViewerSorter= viewerSorter;
	}
	
	public void setTreeExpansionLevel(int level) {
		fTreeExpandLevel= level;
		if (isOkToUse(fTreeControl) && fTreeExpandLevel > 0) {