| /******************************************************************************* |
| * Copyright (c) 2009, 2010 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 |
| *******************************************************************************/ |
| package org.eclipse.e4.ui.workbench.renderers.swt; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.WeakHashMap; |
| import org.eclipse.e4.ui.internal.workbench.ExtensionPointProxy; |
| import org.eclipse.e4.ui.model.application.ui.MElementContainer; |
| import org.eclipse.e4.ui.model.application.ui.MUIElement; |
| import org.eclipse.e4.ui.model.application.ui.menu.MMenuElement; |
| import org.eclipse.e4.ui.model.application.ui.menu.MRenderedMenuItem; |
| import org.eclipse.jface.action.ContributionItem; |
| import org.eclipse.jface.action.IContributionItem; |
| import org.eclipse.jface.action.MenuManager; |
| import org.eclipse.swt.widgets.Menu; |
| import org.eclipse.swt.widgets.MenuItem; |
| import org.eclipse.swt.widgets.Widget; |
| |
| /** |
| * Create a contribute part. |
| */ |
| public class RenderedMenuItemRenderer extends SWTPartRenderer { |
| |
| private static Method aboutToShow; |
| |
| private static Method getAboutToShow() { |
| if (aboutToShow == null) { |
| try { |
| aboutToShow = MenuManager.class |
| .getDeclaredMethod("handleAboutToShow"); //$NON-NLS-1$ |
| aboutToShow.setAccessible(true); |
| } catch (SecurityException e) { |
| // TODO Auto-generated catch block |
| e.printStackTrace(); |
| } catch (NoSuchMethodException e) { |
| // TODO Auto-generated catch block |
| e.printStackTrace(); |
| } |
| } |
| return aboutToShow; |
| } |
| |
| private Map<IContributionItem, List<MenuRecord>> map = new WeakHashMap<IContributionItem, List<MenuRecord>>(); |
| |
| public Object createWidget(final MUIElement element, Object parent) { |
| if (!(element instanceof MRenderedMenuItem) |
| || !(parent instanceof Menu)) { |
| return null; |
| } |
| |
| MRenderedMenuItem menuModel = (MRenderedMenuItem) element; |
| Object contribution = menuModel.getContributionItem(); |
| if (contribution instanceof ExtensionPointProxy) { |
| ExtensionPointProxy proxy = (ExtensionPointProxy) contribution; |
| Object delegate = proxy.createDelegate(menuModel); |
| if (delegate != null) { |
| proxy.setField("dirty", Boolean.TRUE); //$NON-NLS-1$ |
| return fill((IContributionItem) delegate, (Menu) parent); |
| } |
| } else if (contribution instanceof IContributionItem) { |
| return fill((IContributionItem) contribution, (Menu) parent); |
| } |
| return null; |
| } |
| |
| private Object fill(IContributionItem item, Menu menu) { |
| ContributionItem contribution = (ContributionItem) item; |
| MenuManager manager = (MenuManager) contribution.getParent(); |
| try { |
| if (manager == null) { |
| manager = new MenuManager(); |
| manager.add(contribution); |
| } |
| getAboutToShow().invoke(manager, new Object[0]); |
| } catch (IllegalArgumentException e) { |
| // TODO Auto-generated catch block |
| e.printStackTrace(); |
| return null; |
| } catch (IllegalAccessException e) { |
| // TODO Auto-generated catch block |
| e.printStackTrace(); |
| return null; |
| } catch (InvocationTargetException e) { |
| // TODO Auto-generated catch block |
| e.printStackTrace(); |
| return null; |
| } |
| |
| int itemCount = menu.getItemCount(); |
| List<MenuRecord> list = map.get(item); |
| if (list != null) { |
| for (int i = 0; i < list.size(); i++) { |
| MenuRecord record = list.get(i); |
| Menu storedMenu = record.getMenu(); |
| if (storedMenu.isDisposed()) { |
| list.remove(i); |
| i--; |
| } else if (storedMenu == menu) { |
| record.dispose(); |
| itemCount = menu.getItemCount(); |
| list.remove(i); |
| break; |
| } |
| } |
| } |
| |
| item.fill(menu, itemCount); |
| int endIndex = menu.getItemCount(); |
| |
| if (list == null) { |
| if (itemCount != endIndex) { |
| list = new ArrayList<MenuRecord>(); |
| MenuRecord record = new MenuRecord(menu); |
| for (int i = itemCount; i < endIndex; i++) { |
| record.addItem(menu.getItem(i)); |
| } |
| list.add(record); |
| map.put(item, list); |
| } |
| } else { |
| for (int i = 0; i < list.size(); i++) { |
| MenuRecord record = list.get(i); |
| if (record.getMenu() == menu) { |
| list.remove(i); |
| record = new MenuRecord(menu); |
| for (int j = itemCount; j < endIndex; j++) { |
| record.addItem(menu.getItem(j)); |
| } |
| list.add(record); |
| return null; |
| } |
| } |
| |
| MenuRecord record = new MenuRecord(menu); |
| for (int i = itemCount; i < endIndex; i++) { |
| record.addItem(menu.getItem(i)); |
| } |
| list.add(record); |
| map.put(item, list); |
| } |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer#unbindWidget |
| * (org.eclipse.e4.ui.model.application.ui.MUIElement) |
| */ |
| @Override |
| public Object unbindWidget(MUIElement me) { |
| MRenderedMenuItem item = (MRenderedMenuItem) me; |
| Object contributionItem = item.getContributionItem(); |
| if (contributionItem instanceof ExtensionPointProxy) { |
| ExtensionPointProxy proxy = (ExtensionPointProxy) contributionItem; |
| Object delegate = proxy.getDelegate(); |
| if (delegate instanceof IContributionItem) { |
| ((IContributionItem) delegate).dispose(); |
| } |
| } else if (contributionItem instanceof IContributionItem) { |
| ((IContributionItem) contributionItem).dispose(); |
| } |
| return super.unbindWidget(me); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer#hideChild |
| * (org.eclipse.e4.ui.model.application.MElementContainer, |
| * org.eclipse.e4.ui.model.application.MUIElement) |
| */ |
| @Override |
| public void hideChild(MElementContainer<MUIElement> parentElement, |
| MUIElement child) { |
| super.hideChild(parentElement, child); |
| |
| // Since there's no place to 'store' a child that's not in a menu |
| // we'll blow it away and re-create on an add |
| Widget widget = (Widget) child.getWidget(); |
| if (widget != null && !widget.isDisposed()) |
| widget.dispose(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.e4.ui.workbench.renderers.AbstractPartRenderer#getUIContainer |
| * (org.eclipse.e4.ui.model.application.MUIElement) |
| */ |
| @Override |
| public Object getUIContainer(MUIElement element) { |
| if (!(element instanceof MMenuElement)) |
| return null; |
| |
| if (element.getParent().getWidget() instanceof MenuItem) { |
| MenuItem mi = (MenuItem) element.getParent().getWidget(); |
| if (mi.getMenu() == null) { |
| mi.setMenu(new Menu(mi)); |
| } |
| return mi.getMenu(); |
| } |
| |
| return super.getUIContainer(element); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer#processContents |
| * (org.eclipse.e4.ui.model.application.ui.MElementContainer) |
| */ |
| @Override |
| public void processContents(MElementContainer<MUIElement> container) { |
| // We've delegated further rendering to the ContributionManager |
| // it's their fault the menu items don't show up! |
| } |
| |
| class MenuRecord { |
| |
| private Menu menu; |
| private List<MenuItem> items = new ArrayList<MenuItem>(); |
| |
| public MenuRecord(Menu menu) { |
| this.menu = menu; |
| } |
| |
| public Menu getMenu() { |
| return menu; |
| } |
| |
| public void addItem(MenuItem item) { |
| items.add(item); |
| } |
| |
| public void dispose() { |
| for (MenuItem item : items) { |
| item.dispose(); |
| } |
| } |
| } |
| } |