Selects Management Model

The graph model also provides the element selection management model, by which the elements will be selected or the selection may be cancelled.

#selectionModel :Q.SelectionModel - element selection model

• Selection element: model.selectionModel.select(…);
• Cancel element selection: model.selectionModel.unselect(…);
• Clear element selection status: model.selectionModel.clear();

Selection change events

Provides corresponding dispatcher for selection change event, applicable to selection change event of monitoring elements

#selectionChangeDispatcher :Q.Dispatcher - Dispatcher of element selection change event

Example

Monitor selection change events

var model = graph.graphModel;
var a = new Q.Node('A');
model.add(a);
var b = new Q.Node('B');
model.add(b);

model.selectionChangeDispatcher.addListener(function(evt){
    Q.log(evt.kind);
});
var selectionModel = model.selectionModel;
selectionModel.select(a);
selectionModel.unselect(a);
selectionModel.select(b);
selectionModel.clear();

Print results

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