Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2009 Willian Mitsuda 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: * Willian Mitsuda - initial API and implementation * Tasktop Technologies - improvements * Tomasz Zarna, IBM Corporation - improvements for bug 261648 *******************************************************************************/ package org.eclipse.mylyn.internal.tasks.ui.commands; import java.util.ArrayList; import java.util.LinkedList; import java.util.List; import java.util.Set; import org.eclipse.core.commands.common.CommandException; 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.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.DecoratingLabelProvider; import org.eclipse.jface.viewers.IOpenListener; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.OpenEvent; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.mylyn.commons.core.StatusHandler; import org.eclipse.mylyn.internal.tasks.core.AbstractTask; import org.eclipse.mylyn.internal.tasks.core.AbstractTaskCategory; import org.eclipse.mylyn.internal.tasks.core.AbstractTaskContainer; import org.eclipse.mylyn.internal.tasks.core.ITaskRepositoryFilter; import org.eclipse.mylyn.internal.tasks.core.TaskList; import org.eclipse.mylyn.internal.tasks.core.TaskRepositoryManager; import org.eclipse.mylyn.internal.tasks.ui.ITaskCommandIds; import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin; import org.eclipse.mylyn.internal.tasks.ui.views.TaskRepositoryLabelProvider; import org.eclipse.mylyn.tasks.core.AbstractRepositoryConnector; import org.eclipse.mylyn.tasks.core.IRepositoryElement; import org.eclipse.mylyn.tasks.core.ITask; import org.eclipse.mylyn.tasks.core.TaskRepository; import org.eclipse.mylyn.tasks.ui.TaskElementLabelProvider; import org.eclipse.mylyn.tasks.ui.TasksUiUtil; import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyAdapter; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.dialogs.SelectionStatusDialog; import org.eclipse.ui.handlers.IHandlerService; /** * @author Willian Mitsuda */ public class RemoteTaskSelectionDialog extends SelectionStatusDialog { public RemoteTaskSelectionDialog(Shell parent) { super(parent); setShellStyle(getShellStyle() | SWT.RESIZE); setStatusLineAboveButtons(true); } private Text idText; private TableViewer tasksViewer; private ComboViewer repositoriesViewer; private Button addToTaskListCheck; private ComboViewer categoryViewer; // TODO: copy'n pasted code; make API? private 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 (ITaskRepositoryFilter.CAN_CREATE_TASK_FROM_KEY.accept(repository, connector)) { repositories.add(repository); } } } return repositories; } @Override protected Control createDialogArea(Composite parent) { Composite area = (Composite) super.createDialogArea(parent); Label idLabel = new Label(area, SWT.NULL); idLabel.setText(Messages.RemoteTaskSelectionDialog_Enter_Key_ID__use_comma_for_multiple_); idText = new Text(area, SWT.BORDER); idText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); Label matchingTasksLabel = new Label(area, SWT.NONE); matchingTasksLabel.setText(Messages.RemoteTaskSelectionDialog_Matching_tasks); tasksViewer = new TableViewer(area, SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL); tasksViewer.getControl() .setLayoutData(GridDataFactory.fillDefaults().grab(true, true).hint(400, 400).create()); tasksViewer.setLabelProvider(new DecoratingLabelProvider(new TaskElementLabelProvider(true), PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator())); tasksViewer.setContentProvider(new ArrayContentProvider()); tasksViewer.addFilter(new ViewerFilter() { @Override public boolean select(Viewer viewer, Object parentElement, Object element) { if (selectedIds == null) { return false; } // Only shows exact task matches if (!(element instanceof ITask)) { return false; } ITask task = (ITask) element; String taskId = task.getTaskKey(); for (String id : selectedIds) { if (id.equals(taskId)) { return true; } } return false; } }); tasksViewer.setInput(TasksUiPlugin.getTaskList().getAllTasks()); idText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { computeIds(); validate(); tasksViewer.refresh(false); } }); tasksViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { validate(); } }); tasksViewer.addOpenListener(new IOpenListener() { public void open(OpenEvent event) { if (getOkButton().getEnabled()) { okPressed(); } } }); Table table = tasksViewer.getTable(); table.showSelection(); Composite repositoriesComposite = new Composite(area, SWT.NONE); repositoriesComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); repositoriesComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(3).create()); Label repositoriesLabel = new Label(repositoriesComposite, SWT.NONE); repositoriesLabel.setText(Messages.RemoteTaskSelectionDialog_Select_a_task_repository); repositoriesViewer = new ComboViewer(repositoriesComposite, SWT.DROP_DOWN | SWT.READ_ONLY); repositoriesViewer.setLabelProvider(new TaskRepositoryLabelProvider()); repositoriesViewer.setContentProvider(new ArrayContentProvider()); List<TaskRepository> taskRepositories = getTaskRepositories(); repositoriesViewer.setInput(taskRepositories); if (taskRepositories.size() == 1) { repositoriesViewer.setSelection(new StructuredSelection(taskRepositories.get(0))); } TaskRepository currentRepository = TasksUiUtil.getSelectedRepository(null); if (currentRepository != null) { repositoriesViewer.setSelection(new StructuredSelection(currentRepository), true); } repositoriesViewer.getControl().setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); repositoriesViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { tasksViewer.setSelection(StructuredSelection.EMPTY); validate(); } }); Button addRepositoryButton = new Button(repositoriesComposite, SWT.NONE); addRepositoryButton.setText(Messages.RemoteTaskSelectionDialog_Add_); addRepositoryButton.setEnabled(TasksUiPlugin.getRepositoryManager().hasUserManagedRepositoryConnectors()); addRepositoryButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent event) { IHandlerService hndSvc = (IHandlerService) PlatformUI.getWorkbench() .getService(IHandlerService.class); try { hndSvc.executeCommand(ITaskCommandIds.ADD_TASK_REPOSITORY, null); repositoriesViewer.setInput(getTaskRepositories()); } catch (CommandException e) { StatusHandler.log(new Status(IStatus.ERROR, TasksUiPlugin.ID_PLUGIN, e.getMessage(), e)); } } }); Composite addToTaskListComposite = new Composite(area, SWT.NONE); addToTaskListComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).create()); addToTaskListCheck = new Button(addToTaskListComposite, SWT.CHECK); addToTaskListCheck.setText(Messages.RemoteTaskSelectionDialog_Add_to_Task_List_category); categoryViewer = new ComboViewer(addToTaskListComposite, SWT.DROP_DOWN | SWT.READ_ONLY); categoryViewer.setContentProvider(new ArrayContentProvider()); TaskList taskList = TasksUiPlugin.getTaskList(); LinkedList<AbstractTaskContainer> categories = new LinkedList<AbstractTaskContainer>( taskList.getCategories()); categories.addFirst(taskList.getDefaultCategory()); categoryViewer.setInput(categories); categoryViewer.setLabelProvider(new LabelProvider() { @Override public String getText(Object element) { if (element instanceof IRepositoryElement) { return ((IRepositoryElement) element).getSummary(); } return super.getText(element); } }); categoryViewer.setSelection(new StructuredSelection(taskList.getDefaultCategory())); categoryViewer.getControl().setEnabled(addToTaskListCheck.getSelection()); addToTaskListCheck.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { categoryViewer.getControl().setEnabled(addToTaskListCheck.getSelection()); } }); idText.addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { if (e.keyCode == SWT.ARROW_DOWN) { tasksViewer.getControl().setFocus(); } } }); validate(); Dialog.applyDialogFont(area); return area; } private void validate() { if (idText.getText().trim().equals("")) { //$NON-NLS-1$ updateStatus(new Status(IStatus.INFO, TasksUiPlugin.ID_PLUGIN, 0, Messages.RemoteTaskSelectionDialog_Enter_a_valid_task_ID, null)); return; } if (tasksViewer.getSelection().isEmpty() && repositoriesViewer.getSelection().isEmpty()) { updateStatus(new Status(IStatus.INFO, TasksUiPlugin.ID_PLUGIN, 0, Messages.RemoteTaskSelectionDialog_Select_a_task_or_repository, null)); return; } updateStatus(new Status(IStatus.OK, TasksUiPlugin.ID_PLUGIN, 0, "", null)); //$NON-NLS-1$ } @Override protected void updateStatus(IStatus status) { super.updateStatus(status); // support disabling button for non-error statuses Button okButton = getOkButton(); if (okButton != null && !okButton.isDisposed()) { okButton.setEnabled(status.isOK()); } } private String[] selectedIds; private TaskRepository selectedRepository; private AbstractTask selectedTask; private boolean shouldAddToTaskList; private AbstractTaskCategory selectedCategory; public String[] getSelectedIds() { return selectedIds; } public TaskRepository getSelectedTaskRepository() { return selectedRepository; } public AbstractTask getSelectedTask() { return selectedTask; } public boolean shouldAddToTaskList() { return shouldAddToTaskList; } public AbstractTaskCategory getSelectedCategory() { return selectedCategory; } @Override protected void computeResult() { computeIds(); ISelection taskSelection = tasksViewer.getSelection(); if (!taskSelection.isEmpty()) { selectedTask = (AbstractTask) ((IStructuredSelection) taskSelection).getFirstElement(); } else { selectedRepository = (TaskRepository) ((IStructuredSelection) repositoriesViewer.getSelection()) .getFirstElement(); } shouldAddToTaskList = addToTaskListCheck.getSelection(); if (shouldAddToTaskList) { selectedCategory = (AbstractTaskCategory) ((IStructuredSelection) categoryViewer.getSelection()) .getFirstElement(); } } private void computeIds() { selectedIds = idText.getText().split(","); //$NON-NLS-1$ for (String id : selectedIds) { id = id.trim(); } } }