Instantiating and attaching a subclass of IlvLabelLayout

The class IlvLabelLayout is an abstract class. It has no constructors. You will instantiate a subclass as shown in the following example:

IlvAnnealingLabelLayout layout = new IlvAnnealingLabelLayout();

In order to place labels, a manager needs to be attached to the layout instance. The following method, defined on the class IlvLabelLayout , allows you to specify the manager you want to lay out:

void attach(IlvManager manager)  

For example:

...
IlvManager manager = new IlvManager();
/* Add obstacles and labels to the manager here */
layout.attach(manager);

The attach method does nothing if the specified manager is already attached. If a different manager is attached, this method first detaches this old manager, then attaches the new one. You can obtain the attached manager using the method getManager . If the manager is attached in this way, a default labeling model is created internally. The labeling model can be obtained by:

IlvLabelingModel labelingModel = layout.getLabelingModel();

After layout, when you no longer need the layout instance, you should call the method

void detach()   

If the detach method is not called, some objects may not be garbage-collected. This method also performs cleaning operations on the manager (properties that may have been added by the layout algorithm on objects of the manager.