Java tutorial
/******************************************************************************* * Copyright (c) 2010 Tasktop Technologies 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: * Tasktop Technologies - initial API and implementation * Itema AS - bug 326761: switched to use common service message control *******************************************************************************/ package org.eclipse.mylyn.internal.tasks.ui.notifications; import java.net.MalformedURLException; import java.net.URL; import java.util.Collections; import java.util.Date; import org.eclipse.core.commands.Command; import org.eclipse.core.commands.ExecutionEvent; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.SafeRunner; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.util.SafeRunnable; import org.eclipse.mylyn.commons.notifications.feed.IServiceMessageListener; import org.eclipse.mylyn.commons.notifications.feed.ServiceMessageEvent; import org.eclipse.mylyn.commons.notifications.ui.NotificationControl; import org.eclipse.mylyn.internal.commons.notifications.feed.ServiceMessage; import org.eclipse.mylyn.internal.tasks.core.LocalTask; import org.eclipse.mylyn.internal.tasks.ui.ITasksUiPreferenceConstants; import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin; import org.eclipse.mylyn.internal.tasks.ui.actions.AddRepositoryAction; import org.eclipse.mylyn.internal.tasks.ui.preferences.TasksUiPreferencePage; import org.eclipse.mylyn.internal.tasks.ui.util.TasksUiInternal; import org.eclipse.mylyn.internal.tasks.ui.wizards.Messages; import org.eclipse.mylyn.tasks.ui.TasksUiUtil; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.handlers.IHandlerService; /** * @author Robert Elves * @author Steffen Pingel * @author Torkild U. Resheim */ public class TaskListServiceMessageControl extends NotificationControl implements IServiceMessageListener { private ServiceMessage currentMessage; public TaskListServiceMessageControl(Composite parent) { super(parent); setPreferencesPageId(TasksUiPreferencePage.ID); } static ExecutionEvent createExecutionEvent(Command command, IHandlerService handlerService) { return new ExecutionEvent(command, Collections.emptyMap(), null, TasksUiInternal.createDiscoveryWizardEvaluationContext(handlerService)); } @Override protected void closeMessage() { if (currentMessage != null) { TasksUiPlugin.getDefault().getPreferenceStore() .setValue(ITasksUiPreferenceConstants.LAST_SERVICE_MESSAGE_ID, currentMessage.getId()); } close(); } public void handleEvent(final ServiceMessageEvent event) { switch (event.getEventKind()) { case MESSAGE_UPDATE: IPreferenceStore preferenceStore = TasksUiPlugin.getDefault().getPreferenceStore(); preferenceStore.setValue(ITasksUiPreferenceConstants.LAST_SERVICE_MESSAGE_CHECKTIME, new Date().getTime()); String lastMessageId = preferenceStore.getString(ITasksUiPreferenceConstants.LAST_SERVICE_MESSAGE_ID); for (final ServiceMessage message : event.getMessages()) { if (!message.isValid() || message.getId().equals("-1")) { //$NON-NLS-1$ continue; } if (message.getId().compareTo(lastMessageId) > 0) { Display.getDefault().asyncExec(new Runnable() { public void run() { setMessage(message); // event id is not used but must be set to make configure link visible setEventId(""); //$NON-NLS-1$ } }); break; } } break; case STOP: close(); break; } } public void setMessage(ServiceMessage message) { if (message != null) { ensureControl(); if (message.getETag() != null && message.getLastModified() != null) { IPreferenceStore preferenceStore = TasksUiPlugin.getDefault().getPreferenceStore(); preferenceStore.setValue(ITasksUiPreferenceConstants.LAST_SERVICE_MESSAGE_ETAG, message.getETag()); preferenceStore.setValue(ITasksUiPreferenceConstants.LAST_SERVICE_MESSAGE_LAST_MODIFIED, message.getLastModified()); } this.currentMessage = message; setTitle(message.getTitle()); setTitleImage(Dialog.getImage(message.getImage())); setDescription(message.getDescription()); } } @Override public SelectionListener getLinkListener() { return new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if (e.text == null) { return; } final String action = getAction(e.text); if ("create-local-task".equals(action)) { //$NON-NLS-1$ closeMessage(); LocalTask task = TasksUiInternal.createNewLocalTask(null); TasksUiUtil.openTask(task); } else if ("connect".equals(action)) { //$NON-NLS-1$ closeMessage(); new AddRepositoryAction().run(); } else if ("discovery".equals(action)) { //$NON-NLS-1$ closeMessage(); final Command discoveryWizardCommand = TasksUiInternal.getConfiguredDiscoveryWizardCommand(); if (discoveryWizardCommand != null && discoveryWizardCommand.isEnabled()) { IHandlerService handlerService = (IHandlerService) PlatformUI.getWorkbench() .getService(IHandlerService.class); try { handlerService.executeCommand(discoveryWizardCommand.getId(), null); } catch (Exception e1) { IStatus status = new Status(IStatus.ERROR, TasksUiPlugin.ID_PLUGIN, NLS.bind(Messages.SelectRepositoryConnectorPage_discoveryProblemMessage, new Object[] { e1.getMessage() }), e1); TasksUiInternal.logAndDisplayStatus( Messages.SelectRepositoryConnectorPage_discoveryProblemTitle, status); } } } else if (TasksUiInternal.isValidUrl(e.text)) { TasksUiUtil.openUrl(e.text); } else if (currentMessage != null) { SafeRunner.run(new SafeRunnable() { public void run() throws Exception { if (currentMessage.openLink(action)) { closeMessage(); } } }); } } }; } /** * Extracts action from query part or a URL if applicable. */ public static String getAction(String action) { if (action.startsWith("http")) { //$NON-NLS-1$ URL url; try { url = new URL(action); String query = url.getQuery(); if (query != null && query.startsWith("action=")) { //$NON-NLS-1$ int i = query.indexOf("&"); //$NON-NLS-1$ if (i != -1) { action = query.substring(7, i); } else { action = query.substring(7); } } else { return null; } } catch (MalformedURLException e1) { // ignore return null; } } return action.toLowerCase(); } }