How use this functionality that org.eclipse.ui.decorators provides? Lets say I have some object in TreeViewer and want to enable decorator only when object has "dirty" property set to true? Do I have to build some Decorator implementation or only use of objectState in plugin.xml extension will fulfill my needs?
"A brilliant colleague of mine" section in this post may be helpful In Eclipse RCP, how do I disable a save toolbar button according to the "dirty" property in editor