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 * Brock Janiczak - improvements * Eugene Kuleshov - improvements *******************************************************************************/ package org.eclipse.mylyn.internal.tasks.ui.wizards; import java.util.ArrayList; import java.util.List; import java.util.Set; 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.viewers.DecoratingLabelProvider; import org.eclipse.jface.viewers.IOpenListener; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.OpenEvent; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TreePath; import org.eclipse.jface.viewers.TreeSelection; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.wizard.IWizard; import org.eclipse.jface.wizard.IWizardNode; import org.eclipse.jface.wizard.WizardDialog; import org.eclipse.jface.wizard.WizardSelectionPage; import org.eclipse.mylyn.commons.ui.CommonImages; import org.eclipse.mylyn.commons.workbench.GradientDrawer; import org.eclipse.mylyn.internal.tasks.core.Category; import org.eclipse.mylyn.internal.tasks.core.ITaskRepositoryFilter; import org.eclipse.mylyn.internal.tasks.core.LocalRepositoryConnector; import org.eclipse.mylyn.internal.tasks.core.TaskRepositoryManager; import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin; import org.eclipse.mylyn.internal.tasks.ui.actions.AddRepositoryAction; import org.eclipse.mylyn.internal.tasks.ui.util.TasksUiInternal; import org.eclipse.mylyn.internal.tasks.ui.views.TaskRepositoriesViewSorter; import org.eclipse.mylyn.internal.tasks.ui.views.TaskRepositoryLabelProvider; import org.eclipse.mylyn.tasks.core.AbstractRepositoryConnector; import org.eclipse.mylyn.tasks.core.TaskRepository; import org.eclipse.mylyn.tasks.ui.TasksUi; import org.eclipse.mylyn.tasks.ui.TasksUiImages; import org.eclipse.mylyn.tasks.ui.TasksUiUtil; 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.graphics.Point; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Tree; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.handlers.IHandlerService; import org.eclipse.ui.themes.IThemeManager; /** * @author Mik Kersten * @author Brock Janiczak * @author Steffen Pingel * @author Eugene Kuleshov */ public abstract class SelectRepositoryPage extends WizardSelectionPage { private TreeViewer viewer; protected MultiRepositoryAwareWizard wizard; private List<TaskRepository> repositories = new ArrayList<TaskRepository>(); private final ITaskRepositoryFilter taskRepositoryFilter; // private TaskRepositoriesContentProvider contentProvider; class RepositoryContentProvider implements ITreeContentProvider { public Object[] getChildren(Object parentElement) { return null; } public Object getParent(Object element) { return null; } public boolean hasChildren(Object element) { return false; } public Object[] getElements(Object inputElement) { return repositories.toArray(); } public void dispose() { // ignore } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { // ignore } } public SelectRepositoryPage(ITaskRepositoryFilter taskRepositoryFilter) { super(Messages.SelectRepositoryPage_Select_a_repository); setTitle(Messages.SelectRepositoryPage_Select_a_repository); setDescription(Messages.SelectRepositoryPage_Add_new_repositories_using_the_X_view); this.taskRepositoryFilter = taskRepositoryFilter; this.repositories = getTaskRepositories(); } public List<TaskRepository> getTaskRepositories() { List<TaskRepository> repositories = new ArrayList<TaskRepository>(); TaskRepositoryManager repositoryManager = TasksUiPlugin.getRepositoryManager(); for (AbstractRepositoryConnector connector : repositoryManager.getRepositoryConnectors()) { Set<TaskRepository> connectorRepositories = repositoryManager .getRepositories(connector.getConnectorKind()); for (TaskRepository repository : connectorRepositories) { if (taskRepositoryFilter.accept(repository, connector)) { repositories.add(repository); } } } return repositories; } public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NULL); GridLayout layout = new GridLayout(1, true); container.setLayout(layout); Tree tree = createTableViewer(container); viewer.setSorter(new TaskRepositoriesViewSorter()); GridData gridData = new GridData(GridData.FILL_BOTH | GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL); tree.setLayoutData(gridData); Composite buttonContainer = new Composite(container, SWT.NULL); GridLayout buttonLayout = new GridLayout(2, false); buttonContainer.setLayout(buttonLayout); final AddRepositoryAction action = new AddRepositoryAction(); action.setPromptToAddQuery(false); Button button = new Button(buttonContainer, SWT.NONE); button.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING | GridData.VERTICAL_ALIGN_BEGINNING)); button.setImage(CommonImages.getImage(TasksUiImages.REPOSITORY_NEW)); button.setText(AddRepositoryAction.TITLE); button.setEnabled(action.isEnabled()); button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { TaskRepository taskRepository = action.showWizard(); if (taskRepository != null) { SelectRepositoryPage.this.repositories = getTaskRepositories(); viewer.setInput(TasksUi.getRepositoryManager().getRepositoryConnectors()); viewer.setSelection(new StructuredSelection(taskRepository)); } } }); final Command discoveryWizardCommand = TasksUiInternal.getConfiguredDiscoveryWizardCommand(); if (discoveryWizardCommand != null && discoveryWizardCommand.isEnabled()) { Button discoveryButton = new Button(buttonContainer, 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); } protected Tree createTableViewer(Composite container) { viewer = new TreeViewer(container, SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL); // contentProvider = new TeamRepositoriesContentProvider(); viewer.setContentProvider(new RepositoryContentProvider()); // ViewerFilter[] filters = { new EmptyCategoriesFilter(contentProvider) }; // viewer.setFilters(filters); // viewer.setLabelProvider(new TaskRepositoryLabelProvider()); 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 TaskRepository) { setSelectedNode(new CustomWizardNode((TaskRepository) selection.getFirstElement())); setPageComplete(true); } else { setSelectedNode(null); setPageComplete(false); } } }); TaskRepository selectedRepository = TasksUiUtil.getSelectedRepository(null); if (selectedRepository != null) { Category category = ((TaskRepositoryManager) TasksUi.getRepositoryManager()) .getCategory(selectedRepository); Object[] path = { category, selectedRepository }; viewer.setSelection(new TreeSelection(new TreePath(path))); } else { TaskRepository localRepository = TasksUi.getRepositoryManager().getRepository( LocalRepositoryConnector.CONNECTOR_KIND, LocalRepositoryConnector.REPOSITORY_URL); viewer.setSelection(new StructuredSelection(localRepository)); } final IThemeManager themeManager = PlatformUI.getWorkbench().getThemeManager(); new GradientDrawer(themeManager, getViewer()) { @Override protected boolean shouldApplyGradient(org.eclipse.swt.widgets.Event event) { return event.item.getData() instanceof Category; } }; viewer.addOpenListener(new IOpenListener() { public void open(OpenEvent event) { if (canFlipToNextPage()) { getContainer().showPage(getNextPage()); } else if (canFinish()) { if (getWizard().performFinish()) { ((WizardDialog) getContainer()).close(); } } } }); viewer.expandAll(); viewer.getTree().showSelection(); viewer.getTree().setFocus(); return viewer.getTree(); } protected abstract IWizard createWizard(TaskRepository taskRepository); @Override public boolean canFlipToNextPage() { return getSelectedNode() != null && getNextPage() != null; } public boolean canFinish() { return getSelectedNode() != null && getNextPage() == null; } public boolean performFinish() { if (getSelectedNode() == null || getNextPage() != null) { // finish event will get forwarded to nested wizard // by container return false; } return getSelectedNode().getWizard().performFinish(); } private class CustomWizardNode implements IWizardNode { private final TaskRepository repository; private IWizard wizard; public CustomWizardNode(TaskRepository repository) { this.repository = repository; } public void dispose() { if (wizard != null) { wizard.dispose(); } } public Point getExtent() { return new Point(-1, -1); } public IWizard getWizard() { if (wizard == null) { wizard = SelectRepositoryPage.this.createWizard(repository); if (wizard != null) { wizard.setContainer(getContainer()); } } return wizard; } public boolean isContentCreated() { return wizard != null; } @Override public boolean equals(Object obj) { if (!(obj instanceof CustomWizardNode)) { return false; } CustomWizardNode that = (CustomWizardNode) obj; if (this == that) { return true; } return this.repository.getConnectorKind().equals(that.repository.getConnectorKind()) && this.repository.getRepositoryUrl().equals(that.repository.getRepositoryUrl()); } @Override public int hashCode() { return 31 * this.repository.getRepositoryUrl().hashCode() + this.repository.getConnectorKind().hashCode(); } } /** * Public for testing. */ public TreeViewer getViewer() { return viewer; } /** * Public for testing. */ public List<TaskRepository> getRepositories() { return repositories; } }