ShowPropertyParametersActionBase.java

package org.eclipse.uml2.diagram.common.parameter;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gmf.runtime.diagram.ui.actions.DiagramAction;
import org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.uml2.diagram.common.Messages;
import org.eclipse.uml2.diagram.common.parameter.EditPropertyParametersDialog;
import org.eclipse.uml2.uml.Operation;

/*
 * TODO :
 * - old to new property parameters merge(probably in accordance with the name)
 * - make action totally undoable (now only label refresh can be undone)
 */

public abstract class ShowPropertyParametersActionBase extends DiagramAction {

	private IWorkbenchPage myWorkbechPage;

	public ShowPropertyParametersActionBase(IWorkbenchPage workbenchPage) {
		super(workbenchPage);
		setText(Messages.ShowPropertyParametersActionBase_action_manage_parameters);
		myWorkbechPage = workbenchPage;
	}

	@Override
	protected void doRun(IProgressMonitor progressMonitor) {
		EditPropertyParametersDialog dialog = createDialog(getShell(), getOperationToEdit());
		dialog.create();
		dialog.open();
		execute(new RefreshEditPartCommand(getSelectedEditPart()), new NullProgressMonitor());
	}

	abstract protected EditPropertyParametersDialog createDialog(Shell shell, Operation operation);

	@Override
	protected Request createTargetRequest() {
		return null;
	}

	@Override
	protected Command getCommand() {
		// return nothing because all functionality is implemented in #doRun(IProgressMonitor) method
		return new Command(Messages.ShowPropertyParametersActionBase_command_empty) {
		};
	}

	@Override
	protected boolean isSelectionListener() {
		return true;
	}

	private Shell getShell() {
		return myWorkbechPage.getActivePart().getSite().getShell();
	}

	private GraphicalEditPart getSelectedEditPart() {
		return (GraphicalEditPart) getStructuredSelection().getFirstElement();
	}

	private Operation getOperationToEdit() {
		GraphicalEditPart selected = getSelectedEditPart();
		return (Operation) selected.getNotationView().getElement();
	}

	private static class RefreshEditPartCommand extends Command {

		private GraphicalEditPart myEditPart;

		public RefreshEditPartCommand(GraphicalEditPart editPart) {
			super(Messages.ShowPropertyParametersActionBase_command_refresh_property_label);
			myEditPart = editPart;
		}

		@Override
		public void execute() {
			// refresh PropertyEditPArt
			myEditPart.refresh();
			// refresh parent Compartment
			myEditPart.getParent().refresh();
		}
	}

}