Java tutorial
/******************************************************************************* * Copyright (c) 2009 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.context; import java.util.Collections; import java.util.Date; import java.util.List; import java.util.Map; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.wizard.ProgressMonitorPart; import org.eclipse.jface.wizard.WizardDialog; import org.eclipse.mylyn.commons.workbench.WorkbenchUtil; import org.eclipse.mylyn.internal.tasks.ui.util.AttachmentUtil; import org.eclipse.mylyn.tasks.core.ITask; import org.eclipse.mylyn.tasks.core.ITaskAttachment; import org.eclipse.mylyn.tasks.core.TaskRepository; 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.graphics.Image; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Link; import org.eclipse.swt.widgets.Shell; import com.ibm.icu.text.DateFormat; /** * @author Steffen Pingel */ public class RetrieveLatestContextDialog extends MessageDialog { public static boolean openQuestion(Shell shell, ITask task) { TaskRepository repository = TasksUi.getRepositoryManager().getRepository(task.getConnectorKind(), task.getRepositoryUrl()); List<ITaskAttachment> contextAttachments = AttachmentUtil.getContextAttachments(repository, task); Collections.sort(contextAttachments, new TaskAttachmentComparator()); if (contextAttachments.size() > 0) { ITaskAttachment attachment = contextAttachments.get(0); String author = null; if (attachment.getAuthor() != null) { author = (attachment.getAuthor().getName()) != null ? attachment.getAuthor().getName() : attachment.getAuthor().getPersonId(); } if (author == null) { author = Messages.RetrieveLatestContextDialog_Unknown; } Date date = attachment.getCreationDate(); String dateString = null; if (date != null) { dateString = DateFormat.getDateInstance(DateFormat.LONG).format(date); } if (dateString == null) { dateString = Messages.RetrieveLatestContextDialog_Unknown; } String message = NLS.bind(Messages.RetrieveLatestContextDialog_No_local_context_exists, author, dateString); int kind = QUESTION; int style = SWT.NONE; RetrieveLatestContextDialog dialog = new RetrieveLatestContextDialog(shell, Messages.RetrieveLatestContextDialog_Dialog_Title, null, message, kind, new String[] { IDialogConstants.OK_LABEL, IDialogConstants.CANCEL_LABEL }, 0, task, attachment); style &= SWT.SHEET; dialog.setShellStyle(dialog.getShellStyle() | style); return dialog.open() == 0; } return false; } private final ITaskAttachment attachment; private Link link; private ProgressContainer progressContainer; private ProgressMonitorPart progressMonitorPart; private final ITask task; public RetrieveLatestContextDialog(Shell parentShell, String dialogTitle, Image dialogTitleImage, String dialogMessage, int dialogImageType, String[] dialogButtonLabels, int defaultIndex, ITask task, ITaskAttachment attachment) { super(parentShell, dialogTitle, dialogTitleImage, dialogMessage, dialogImageType, dialogButtonLabels, defaultIndex); this.task = task; this.attachment = attachment; } @Override protected void buttonPressed(int buttonId) { if (progressContainer.isActive()) { return; } if (buttonId == 0) { if (!AttachmentUtil.downloadContext(task, attachment, progressContainer)) { // failed return; } } super.buttonPressed(buttonId); } @Override protected Control createButtonBar(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setLayout(GridLayoutFactory.fillDefaults().numColumns(3).create()); GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(composite); Control control = createLink(composite); GridDataFactory.fillDefaults().grab(true, false).applyTo(control); super.createButtonBar(composite); return composite; } @Override protected Control createContents(Composite parent) { Control control = super.createContents(parent); progressContainer.setCancelButton(getButton(1)); getButton(0).setFocus(); return control; } @Override protected Control createCustomArea(Composite parent) { progressMonitorPart = new ProgressMonitorPart(parent, null); GridDataFactory.fillDefaults().grab(true, false).applyTo(progressMonitorPart); progressContainer = new ProgressContainer(getShell(), progressMonitorPart) { @Override protected void restoreUiState(Map<Object, Object> state) { link.setEnabled(true); getButton(0).setEnabled(true); getButton(1).setEnabled(true); }; @Override protected void saveUiState(Map<Object, Object> savedState) { link.setEnabled(false); getButton(0).setEnabled(false); }; }; return progressMonitorPart; } protected Control createLink(Composite parent) { link = new Link(parent, SWT.NONE); link.setText(Messages.RetrieveLatestContextDialog_Show_All_Contexts_Label); link.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { close(); ContextRetrieveWizard wizard = new ContextRetrieveWizard(task); WizardDialog dialog = new WizardDialog(WorkbenchUtil.getShell(), wizard); dialog.create(); dialog.setBlockOnOpen(true); setReturnCode(dialog.open()); } }); return link; } }