Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2007 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 * Sebastian Davids <sdavids@gmx.de> - Collapse all action * Sebastian Davids <sdavids@gmx.de> - Images for menu items *******************************************************************************/ package org.eclipse.ui.internal.navigator.resources.actions; import java.net.URL; import java.util.Collections; import org.eclipse.core.runtime.Assert; import org.eclipse.core.runtime.FileLocator; import org.eclipse.core.runtime.Path; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.action.Separator; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.ui.IWorkbenchWindow; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.actions.ExportResourcesAction; import org.eclipse.ui.actions.ImportResourcesAction; import org.eclipse.ui.internal.navigator.resources.plugin.WorkbenchNavigatorMessages; import org.eclipse.ui.internal.navigator.resources.plugin.WorkbenchNavigatorPlugin; import org.eclipse.ui.navigator.CommonActionProvider; import org.eclipse.ui.navigator.ICommonActionExtensionSite; import org.eclipse.ui.navigator.ICommonMenuConstants; import org.eclipse.ui.navigator.ICommonViewerWorkbenchSite; import org.eclipse.ui.navigator.WizardActionGroup; /** * Adds actions for Import/Export wizards. The group is smart, in that it will * either add actions for Import and Export, or if there are context sensitive * options available (as defined by <b>org.eclipse.ui.navigator.commonWizard</b>), * then it will compound these options into a submenu with the appropriate lead * text ("Import" or "Export"). * * <p> * <strong>EXPERIMENTAL</strong>. This class or interface has been added as * part of a work in progress. There is a guarantee neither that this API will * work nor that it will remain the same. Please do not use this API without * consulting with the Platform/UI team. * </p> * * @since 3.2 */ public class PortingActionProvider extends CommonActionProvider { private static final String COMMON_NAVIGATOR_IMPORT_MENU = "common.import.menu"; //$NON-NLS-1$ private static final String COMMON_NAVIGATOR_EXPORT_MENU = "common.export.menu"; //$NON-NLS-1$ private ImportResourcesAction importAction; private ExportResourcesAction exportAction; private WizardActionGroup importWizardActionGroup; private WizardActionGroup exportWizardActionGroup; private boolean disposed = false; private boolean contribute = false; public void init(ICommonActionExtensionSite anExtensionSite) { Assert.isTrue(!disposed); if (anExtensionSite.getViewSite() instanceof ICommonViewerWorkbenchSite) { IWorkbenchWindow window = ((ICommonViewerWorkbenchSite) anExtensionSite.getViewSite()) .getWorkbenchWindow(); importAction = new ImportResourcesAction(window); exportAction = new ExportResourcesAction(window); importWizardActionGroup = new WizardActionGroup(window, PlatformUI.getWorkbench().getImportWizardRegistry(), WizardActionGroup.TYPE_IMPORT, anExtensionSite.getContentService()); exportWizardActionGroup = new WizardActionGroup(window, PlatformUI.getWorkbench().getExportWizardRegistry(), WizardActionGroup.TYPE_EXPORT, anExtensionSite.getContentService()); contribute = true; } } /** * Extends the superclass implementation to dispose the subgroups. */ public void dispose() { if (!contribute) { return; } importWizardActionGroup.dispose(); exportWizardActionGroup.dispose(); importAction = null; exportAction = null; disposed = true; } public void fillContextMenu(IMenuManager aMenu) { if (!contribute) { return; } Assert.isTrue(!disposed); ISelection selection = getContext().getSelection(); if (!(selection instanceof IStructuredSelection) || ((IStructuredSelection) selection).size() > 1) { addSimplePortingMenus(aMenu); } else { addImportMenu(aMenu); addExportMenu(aMenu); } } /** * Returns the image descriptor with the given relative path. */ protected ImageDescriptor getImageDescriptor(String relativePath) { String iconPath = "icons/full/"; //$NON-NLS-1$ URL url = FileLocator.find(WorkbenchNavigatorPlugin.getDefault().getBundle(), new Path(iconPath + relativePath), Collections.EMPTY_MAP); if (url == null) { return ImageDescriptor.getMissingImageDescriptor(); } return ImageDescriptor.createFromURL(url); } private void addSimplePortingMenus(IMenuManager aMenu) { aMenu.appendToGroup(ICommonMenuConstants.GROUP_PORT, importAction); aMenu.appendToGroup(ICommonMenuConstants.GROUP_PORT, exportAction); } private void addImportMenu(IMenuManager aMenu) { importWizardActionGroup.setContext(getContext()); if (importWizardActionGroup.getWizardActionIds().length == 0) { aMenu.appendToGroup(ICommonMenuConstants.GROUP_PORT, importAction); return; } IMenuManager submenu = new MenuManager( WorkbenchNavigatorMessages.PortingActionProvider_ImportResourcesMenu_label, COMMON_NAVIGATOR_IMPORT_MENU); importWizardActionGroup.fillContextMenu(submenu); submenu.add(new Separator(ICommonMenuConstants.GROUP_ADDITIONS)); submenu.add(new Separator()); submenu.add(importAction); aMenu.appendToGroup(ICommonMenuConstants.GROUP_PORT, submenu); } private void addExportMenu(IMenuManager aMenu) { exportWizardActionGroup.setContext(getContext()); if (exportWizardActionGroup.getWizardActionIds().length == 0) { aMenu.appendToGroup(ICommonMenuConstants.GROUP_PORT, exportAction); return; } IMenuManager submenu = new MenuManager( WorkbenchNavigatorMessages.PortingActionProvider_ExportResourcesMenu_label, COMMON_NAVIGATOR_EXPORT_MENU); exportWizardActionGroup.fillContextMenu(submenu); submenu.add(new Separator(ICommonMenuConstants.GROUP_ADDITIONS)); submenu.add(new Separator()); submenu.add(exportAction); aMenu.appendToGroup(ICommonMenuConstants.GROUP_PORT, submenu); } }