Java tutorial
/******************************************************************************* * Copyright (c) 2004, 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 *******************************************************************************/ package org.eclipse.mylyn.internal.tasks.ui.wizards; import java.util.ArrayList; import java.util.List; import org.eclipse.core.commands.Command; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.DecoratingLabelProvider; import org.eclipse.jface.viewers.IOpenListener; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.OpenEvent; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.mylyn.commons.ui.CommonImages; import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin; import org.eclipse.mylyn.internal.tasks.ui.util.TasksUiInternal; import org.eclipse.mylyn.internal.tasks.ui.views.TaskRepositoriesSorter; import org.eclipse.mylyn.internal.tasks.ui.views.TaskRepositoryLabelProvider; import org.eclipse.mylyn.tasks.core.AbstractRepositoryConnector; import org.eclipse.mylyn.tasks.ui.TasksUi; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.handlers.IHandlerService; /** * @author Mik Kersten * @author David Green */ public class SelectRepositoryConnectorPage extends WizardPage { private TableViewer viewer; private AbstractRepositoryConnector connector; static class RepositoryContentProvider implements IStructuredContentProvider { public void inputChanged(Viewer v, Object oldInput, Object newInput) { } public void dispose() { } public Object[] getElements(Object parent) { List<AbstractRepositoryConnector> userManagedRepositories = new ArrayList<AbstractRepositoryConnector>(); for (AbstractRepositoryConnector connector : TasksUi.getRepositoryManager().getRepositoryConnectors()) { if (connector.isUserManaged() && connector.canCreateRepository()) { userManagedRepositories.add(connector); } } return userManagedRepositories.toArray(); } } public SelectRepositoryConnectorPage() { super(Messages.SelectRepositoryConnectorPage_Select_a_task_repository_type); setTitle(Messages.SelectRepositoryConnectorPage_Select_a_task_repository_type); setDescription( Messages.SelectRepositoryConnectorPage_You_can_connect_to_an_existing_account_using_one_of_the_installed_connectors); } @Override public boolean canFlipToNextPage() { return connector != null; } public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NULL); GridLayoutFactory.fillDefaults().numColumns(1).spacing(0, 3).applyTo(container); viewer = new TableViewer(container, SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL); viewer.setContentProvider(new RepositoryContentProvider()); viewer.setSorter(new TaskRepositoriesSorter()); viewer.setLabelProvider(new DecoratingLabelProvider(new TaskRepositoryLabelProvider(), PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator())); viewer.setInput(TasksUi.getRepositoryManager().getRepositoryConnectors()); viewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { IStructuredSelection selection = (IStructuredSelection) event.getSelection(); if (selection.getFirstElement() instanceof AbstractRepositoryConnector) { connector = (AbstractRepositoryConnector) selection.getFirstElement(); setPageComplete(true); } } }); viewer.addOpenListener(new IOpenListener() { public void open(OpenEvent event) { getContainer().showPage(getNextPage()); } }); GridDataFactory.fillDefaults().grab(true, true).applyTo(viewer.getControl()); // add a hyperlink for connector discovery if it's available and enabled. // we integrate with discovery via a well-known command, which when invoked launches the discovery wizard final Command discoveryWizardCommand = TasksUiInternal.getConfiguredDiscoveryWizardCommand(); if (discoveryWizardCommand != null && discoveryWizardCommand.isEnabled()) { Button discoveryButton = new Button(container, SWT.PUSH); GridDataFactory.swtDefaults().align(SWT.BEGINNING, SWT.CENTER).applyTo(discoveryButton); discoveryButton.setText(Messages.SelectRepositoryConnectorPage_activateDiscovery); discoveryButton.setImage(CommonImages.getImage(CommonImages.DISCOVERY)); discoveryButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent event) { IHandlerService handlerService = (IHandlerService) PlatformUI.getWorkbench() .getService(IHandlerService.class); try { handlerService.executeCommand(discoveryWizardCommand.getId(), null); } catch (Exception e) { IStatus status = new Status(IStatus.ERROR, TasksUiPlugin.ID_PLUGIN, NLS.bind(Messages.SelectRepositoryConnectorPage_discoveryProblemMessage, new Object[] { e.getMessage() }), e); TasksUiInternal.logAndDisplayStatus( Messages.SelectRepositoryConnectorPage_discoveryProblemTitle, status); } } }); } Dialog.applyDialogFont(container); setControl(container); } public AbstractRepositoryConnector getConnector() { return connector; } }