| /******************************************************************************* |
| * Copyright (c) 2005, 2017 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.ui.internal.cheatsheets.composite.views; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Constructor; |
| import java.net.URL; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.FileLocator; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.osgi.util.NLS; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.ui.internal.cheatsheets.CheatSheetPlugin; |
| import org.eclipse.ui.internal.cheatsheets.ICheatSheetResource; |
| import org.eclipse.ui.internal.cheatsheets.Messages; |
| import org.eclipse.ui.internal.cheatsheets.registry.CheatSheetRegistryReader; |
| import org.eclipse.ui.internal.provisional.cheatsheets.TaskExplorer; |
| import org.osgi.framework.Bundle; |
| |
| public class TaskExplorerManager { |
| private static TaskExplorerManager instance; |
| |
| private Map<String, Image> images; |
| |
| private TaskExplorerManager() { |
| |
| } |
| |
| public static TaskExplorerManager getInstance() { |
| if (instance == null) { |
| instance = new TaskExplorerManager(); |
| } |
| return instance; |
| } |
| |
| public TaskExplorer getExplorer(String explorerKind) { |
| CheatSheetRegistryReader.TaskExplorerNode explorerInfo = |
| CheatSheetRegistryReader.getInstance().findTaskExplorer(explorerKind); |
| if (explorerInfo != null) { |
| TaskExplorer explorerInstance = null; |
| Class<?> extClass = null; |
| String className = explorerInfo.getClassName(); |
| try { |
| Bundle bundle = Platform.getBundle(explorerInfo.getPluginId()); |
| extClass = bundle.loadClass(className); |
| } catch (Exception e) { |
| String message = NLS.bind(Messages.ERROR_LOADING_CLASS, (new Object[] {className})); |
| Status status = new Status(IStatus.ERROR, ICheatSheetResource.CHEAT_SHEET_PLUGIN_ID, IStatus.OK, message, e); |
| CheatSheetPlugin.getPlugin().getLog().log(status); |
| } |
| try { |
| if (extClass != null) { |
| Constructor<?> c = extClass.getConstructor(); |
| explorerInstance = (TaskExplorer) c.newInstance(); |
| } |
| } catch (Exception e) { |
| String message = NLS.bind(Messages.ERROR_CREATING_CLASS, (new Object[] {className})); |
| IStatus status = new Status(IStatus.ERROR, ICheatSheetResource.CHEAT_SHEET_PLUGIN_ID, IStatus.OK, message, e); |
| CheatSheetPlugin.getPlugin().getLog().log(status); |
| } |
| |
| return explorerInstance; |
| } |
| |
| return null; |
| } |
| |
| private ImageDescriptor getImageDescriptor(String explorerKind) { |
| CheatSheetRegistryReader.TaskExplorerNode explorerInfo = |
| CheatSheetRegistryReader.getInstance().findTaskExplorer(explorerKind); |
| if (explorerInfo == null) { |
| return null; |
| } |
| String iconPath = explorerInfo.getIconPath(); |
| if (iconPath == null) { |
| return null; |
| } |
| Bundle bundle = Platform.getBundle(explorerInfo.getPluginId()); |
| URL url = FileLocator.find(bundle, new Path(iconPath), null); |
| try { |
| url = FileLocator.resolve(url); |
| return ImageDescriptor.createFromURL(url); |
| } catch (IOException e) { |
| return null; |
| } |
| } |
| |
| private Map<String, Image> getImages() { |
| if (images == null) { |
| initImages(); |
| } |
| return images; |
| } |
| |
| |
| private void initImages() { |
| if (images == null) { |
| images = new HashMap<>(); |
| String[] ids = CheatSheetRegistryReader.getInstance().getExplorerIds(); |
| for (int i = 0; i < ids.length; i++) { |
| ImageDescriptor descriptor = getImageDescriptor(ids[i]); |
| if (descriptor != null) { |
| images.put(ids[i], descriptor.createImage()); |
| } |
| } |
| } |
| } |
| |
| public String getName(String explorerKind) { |
| CheatSheetRegistryReader.TaskExplorerNode explorerInfo = |
| CheatSheetRegistryReader.getInstance().findTaskExplorer(explorerKind); |
| if (explorerInfo != null) { |
| return explorerInfo.getName(); |
| } |
| return null; |
| } |
| |
| public Image getImage(String id) { |
| return getImages().get(id); |
| } |
| |
| } |