package rocks.inspectit.ui.rcp.handlers;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;

import rocks.inspectit.ui.rcp.provider.ICmrRepositoryProvider;
import rocks.inspectit.ui.rcp.repository.CmrRepositoryDefinition;
import rocks.inspectit.ui.rcp.view.impl.StorageManagerView;
import rocks.inspectit.ui.rcp.wizard.ManageLabelWizard;

/**
 * Show labels manager handler.
 *
 * @author Ivan Senic
 *
 */
public class ShowLabelsManagerHandler extends AbstractHandler implements IHandler {

	/**
	 * {@inheritDoc}
	 */
	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		ISelection selection = HandlerUtil.getCurrentSelection(event);
		if (selection instanceof StructuredSelection) {
			Object selectedObject = ((StructuredSelection) selection).getFirstElement();
			if (selectedObject instanceof ICmrRepositoryProvider) {
				CmrRepositoryDefinition cmrRepositoryDefinition = ((ICmrRepositoryProvider) selectedObject).getCmrRepositoryDefinition();
				ManageLabelWizard wizard = new ManageLabelWizard(cmrRepositoryDefinition);
				WizardDialog dialog = new WizardDialog(HandlerUtil.getActiveShell(event), wizard);
				dialog.open();

				if (wizard.isShouldRefreshStorages()) {
					IViewPart viewPart = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().findView(StorageManagerView.VIEW_ID);
					if (viewPart instanceof StorageManagerView) {
						((StorageManagerView) viewPart).refresh(cmrRepositoryDefinition);
					}
				}
			}
		}

		return null;
	}

}