/** Used when the context is switched. Installs the undoMa */
public void update() {
try {
actualProjectDiagram = ModelerSession.getProjectService().getSelectedDiagram();
actualUCDiagramModel = (UCDiagramModel) actualProjectDiagram.getDiagramModel();
actualUCDiagramModel.installUndoActions(
actions.get(UCNotationModel.UNDO_ACTION_KEY),
actions.get(UCNotationModel.REDO_ACTION_KEY));
actions
.get(UCNotationModel.UNDO_ACTION_KEY)
.setEnabled(actualUCDiagramModel.getUndoManager().canUndo());
actions
.get(UCNotationModel.REDO_ACTION_KEY)
.setEnabled(actualUCDiagramModel.getUndoManager().canRedo());
final ProjectDiagram projectDiagram = ModelerSession.getProjectService().getSelectedDiagram();
projectDiagram.addChangeListener(this);
actions.get(UCNotationModel.SAVE_ACTION_KEY).setEnabled(projectDiagram.isChanged());
} catch (ClassCastException exception) {
LOG.error("Unable to cast selected diagram model to UCDiagramModel class.", exception);
} catch (Exception exception) {
LOG.error("An error has occurred during context switch.", exception);
}
this.setTitleAt(0, actualProjectDiagram.getDisplayName());
((UCTabParent) this.getComponent(0)).update();
}
/**
* {@inheritDoc}
*
* <p>Un-install the last UC notation diagram's listeners, sets the UNDO & REDO action as disable
* and makes the actualUCDiagramModel variable null (actual UC notation diagram is none).
*/
public void over() {
if (actualUCDiagramModel != null) {
actualUCDiagramModel.uninstallUndoActions();
} else {
LOG.error(
"over() method of UC notation workspace has been invoked, but there hasn't been set any"
+ "actual UC notation diagram before.");
}
if (actualProjectDiagram != null) {
actualProjectDiagram.removeChangeListener(this);
}
}