| /******************************************************************************* |
| * Copyright (c) 2010, 2016 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Marco Descher <marco@descher.at> - Bug 403081, 403083 |
| * Bruce Skingle <Bruce.Skingle@immutify.com> - Bug 442570 |
| * Lars Vogel <Lars.Vogel@vogella.com> - Bug 472654 |
| *******************************************************************************/ |
| package org.eclipse.e4.ui.workbench.renderers.swt; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import javax.inject.Inject; |
| import org.eclipse.e4.core.contexts.ContextInjectionFactory; |
| import org.eclipse.e4.core.contexts.EclipseContextFactory; |
| import org.eclipse.e4.core.contexts.IEclipseContext; |
| import org.eclipse.e4.ui.di.AboutToHide; |
| import org.eclipse.e4.ui.model.application.ui.menu.MDynamicMenuContribution; |
| import org.eclipse.e4.ui.model.application.ui.menu.MMenu; |
| import org.eclipse.e4.ui.model.application.ui.menu.MMenuElement; |
| import org.eclipse.e4.ui.model.application.ui.menu.MPopupMenu; |
| import org.eclipse.e4.ui.workbench.modeling.EModelService; |
| import org.eclipse.jface.action.IMenuListener2; |
| import org.eclipse.jface.action.IMenuManager; |
| import org.eclipse.jface.action.MenuManager; |
| import org.eclipse.swt.widgets.Menu; |
| |
| /** |
| * <code>MenuManagerHideProcessor</code> provides hooks for renderer processing |
| * before and after the <code>MenuManager</code> calls out to its |
| * <code>IMenuManagerListener2</code> for the <code>menuAboutToHide</code> |
| * events. |
| */ |
| public class MenuManagerHideProcessor implements IMenuListener2 { |
| |
| @Inject |
| private MenuManagerRenderer renderer; |
| |
| @Inject |
| private EModelService modelService; |
| |
| @Override |
| public void menuAboutToShow(IMenuManager manager) { |
| if (!(manager instanceof MenuManager)) { |
| return; |
| } |
| MenuManager menuManager = (MenuManager) manager; |
| final MMenu menuModel = renderer.getMenuModel(menuManager); |
| final Menu menu = menuManager.getMenu(); |
| if (menuModel instanceof MPopupMenu) { |
| hidePopup(menu, (MPopupMenu) menuModel, menuManager); |
| } |
| if (menuModel != null && menu != null) |
| processDynamicElements((MenuManager) manager, menu, menuModel); |
| } |
| |
| /** |
| * Process dynamic menu contributions provided by |
| * {@link MDynamicMenuContribution} application model elements |
| * |
| * @param menu |
| * @param menuModel |
| * |
| */ |
| private void processDynamicElements(final MenuManager menuManager, Menu menu, final MMenu menuModel) { |
| // We need to make a copy of the dynamic items which need to be removed |
| // because the actual remove happens asynchronously. |
| final Map<MDynamicMenuContribution, ArrayList<MMenuElement>> toBeHidden = new HashMap<>(); |
| |
| for (MMenuElement currentMenuElement : menuModel.getChildren()) { |
| if (currentMenuElement instanceof MDynamicMenuContribution) { |
| |
| final Map<String, Object> storageMap = currentMenuElement.getTransientData(); |
| @SuppressWarnings("unchecked") |
| ArrayList<MMenuElement> mel = (ArrayList<MMenuElement>) storageMap |
| .get(MenuManagerShowProcessor.DYNAMIC_ELEMENT_STORAGE_KEY); |
| |
| toBeHidden.put((MDynamicMenuContribution) currentMenuElement, mel); |
| } |
| } |
| |
| if (!menu.isDisposed()) { |
| menu.getDisplay().asyncExec(() -> { |
| for (Entry<MDynamicMenuContribution, ArrayList<MMenuElement>> entry : toBeHidden.entrySet()) { |
| MDynamicMenuContribution currentMenuElement = entry.getKey(); |
| Object contribution = currentMenuElement.getObject(); |
| IEclipseContext dynamicMenuContext = EclipseContextFactory.create(); |
| |
| ArrayList<MMenuElement> mel = entry.getValue(); |
| |
| dynamicMenuContext.set(List.class, mel); |
| dynamicMenuContext.set(MDynamicMenuContribution.class, currentMenuElement); |
| IEclipseContext parentContext = modelService.getContainingContext(currentMenuElement); |
| ContextInjectionFactory.invoke(contribution, AboutToHide.class, parentContext, |
| dynamicMenuContext, null); |
| dynamicMenuContext.dispose(); |
| // remove existing entries for this dynamic |
| // contribution item if there are any |
| if (mel != null && mel.size() > 0) { |
| renderer.removeDynamicMenuContributions(menuManager, menuModel, mel); |
| } |
| |
| // make existing entries for this dynamic contribution |
| // item invisible if there are any |
| if (mel != null && mel.size() > 0) { |
| for (MMenuElement item : mel) { |
| item.setVisible(false); |
| } |
| } |
| } |
| }); |
| } |
| } |
| |
| @Override |
| public void menuAboutToHide(IMenuManager manager) { |
| } |
| |
| private void hidePopup(Menu menu, MPopupMenu menuModel, |
| MenuManager menuManager) { |
| final IEclipseContext popupContext = menuModel.getContext(); |
| final IEclipseContext originalChild = (IEclipseContext) popupContext |
| .get(MenuManagerRendererFilter.TMP_ORIGINAL_CONTEXT); |
| popupContext.remove(MenuManagerRendererFilter.TMP_ORIGINAL_CONTEXT); |
| if (!menu.isDisposed()) { |
| menu.getDisplay().asyncExec(() -> { |
| if (originalChild == null) { |
| popupContext.deactivate(); |
| } else { |
| originalChild.activate(); |
| } |
| }); |
| } |
| } |
| } |