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TreeViewer+ObservableListTreeContentProvider: how to limit visualization depth? [message #1385154]

Wed, 04 June 2014 16:03

Andriy Fomenko

Messages: 24
Registered: May 2013

Junior Member

I have a working model, where TreeViewer gets data from the model supplied by the ObservableListTreeContentProvider:

IListProperty childrenProperty = new MultiListProperty( new IListProperty[] { BeanProperties.list(ModelSetObject.class, "children") }, ModelAbstractEntity.class );
contentProvider = new ObservableListTreeContentProvider( childrenProperty.listFactory(), null );
resTree.setContentProvider(contentProvider);

I'm also supplying ObservableMapLabelProvider as needed

What I want to accomplish is to limit the visualization depth to 2 layers deep (my model is 3-layers).

Is it something which can be forced on ObservableListTreeContentProvider ?

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Re: TreeViewer+ObservableListTreeContentProvider: how to limit visualization depth? [message #1385355 is a reply to message #1385154]

Thu, 05 June 2014 19:16

Erdal Karaca

Messages: 854
Registered: July 2009

Senior Member

You can override the hasChildren(Object) method and determine if the given element has the required depth (<=2) and return super.hasChildren(), else return false...

Andriy Fomenko wrote on Wed, 04 June 2014 18:03

I have a working model, where TreeViewer gets data from the model supplied by the ObservableListTreeContentProvider:

IListProperty childrenProperty = new MultiListProperty( new IListProperty[] { BeanProperties.list(ModelSetObject.class, "children") }, ModelAbstractEntity.class );
contentProvider = new ObservableListTreeContentProvider( childrenProperty.listFactory(), null );
resTree.setContentProvider(contentProvider);

I'm also supplying ObservableMapLabelProvider as needed

What I want to accomplish is to limit the visualization depth to 2 layers deep (my model is 3-layers).

Is it something which can be forced on ObservableListTreeContentProvider ?

Report message to a moderator