To select or deselect a graphic object in a manager, use the
setSelected
method:
void setSelected(IlvGraphic obj, boolean select, boolean redraw)
Once an object has been selected, you can
retrieve its selection object using:
IlvSelection getSelection(IlvGraphic obj)
This method returns
null
if the object does not have an associated selection object; in
other words, if the graphic object is not selected. You can also
use the following method to determine whether the object is
selected or not:
boolean isSelected(IlvGraphic obj)
To obtain the selected object from the selection object, use the getObject method of
IlvSelection
.
You can obtain an enumeration of all the
selected objects in the manager with:
IlvGraphicEnumeration getSelectedObjects()
You can use this method as follows.
IlvGraphicEnumeration selectedobjs = manager.getSelectedObjects();
IlvGraphic obj;
while(selectedobjs.hasMoreElements()) {
obj = selectedobjs.nextElement();
//perform some action
}
Note
To avoid unpredictable results, you must
not select or deselect graphic objects when stepping through the
enumeration as in the example above.
Other methods of
IlvManager
allow you to select and deselect all objects in the manager or in a
particular layer:
void selectAll(IlvManagerView view, boolean redraw)
void selectAll(boolean redraw)
void deSelectAll(boolean redraw)
void deSelectAll(int layer, boolean redraw)
Selection interactor
The library provides the
IlvSelectInteractor
class which allows you to select and deselect objects in an
interactive way (using the mouse). It also allows you to edit
graphic objects. For more information, see The selection interactor.