Java tutorial
/* ********************************************************************** ** ** Copyright notice ** ** ** ** (c) 2005-2011 RSSOwl Development Team ** ** http://www.rssowl.org/ ** ** ** ** 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.rssowl.org/legal/epl-v10.html ** ** ** ** A copy is found in the file epl-v10.html and important notices to the ** ** license from the team is found in the textfile LICENSE.txt distributed ** ** in this package. ** ** ** ** This copyright notice MUST APPEAR in all copies of the file! ** ** ** ** Contributors: ** ** RSSOwl Development Team - initial API and implementation ** ** ** ** ********************************************************************** */ package org.rssowl.ui.internal.dialogs.fatal; import org.eclipse.core.runtime.IStatus; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.wizard.WizardPage; 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.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.Label; import org.rssowl.core.internal.InternalOwl; import org.rssowl.core.util.Pair; import org.rssowl.ui.internal.Application; import org.rssowl.ui.internal.OwlUI; import org.rssowl.ui.internal.util.LayoutUtils; import java.io.File; import java.text.DateFormat; import java.util.List; /** * Part of the {@link FatalErrorWizard} to restore from a backup. * * @author bpasero */ public class RestoreBackupPage extends WizardPage { private List<File> fBackups; private ComboViewer fBackupsViewer; private final DateFormat fDateFormat = OwlUI.getShortDateFormat(); private Button fConfirmRestoreCheck; private final IStatus fErrorStatus; RestoreBackupPage(String pageName, IStatus errorStatus, List<File> backups) { super(pageName, pageName, null); fErrorStatus = errorStatus; fBackups = backups; } /* * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite) */ public void createControl(Composite parent) { /* Title Image and Message */ setImageDescriptor(OwlUI.getImageDescriptor("icons/wizban/welcome_wiz.gif")); //$NON-NLS-1$ if (!fErrorStatus.isOK()) setMessage(Messages.RestoreBackupPage_RSSOWL_CRASH, IMessageProvider.WARNING); else setMessage(Messages.RestoreBackupPage_RESTORE_TEXT_OK, IMessageProvider.INFORMATION); /* Container */ Composite container = new Composite(parent, SWT.NONE); container.setLayout(LayoutUtils.createGridLayout(2, 5, 5)); ((GridLayout) container.getLayout()).marginBottom = 10; /* Restore Information */ { Label backupInfoLabel = new Label(container, SWT.NONE); backupInfoLabel.setText(Messages.RestoreBackupPage_RESTORING_A_BACKUP); backupInfoLabel.setFont(OwlUI.getBold(JFaceResources.DIALOG_FONT)); backupInfoLabel.setLayoutData(new GridData(SWT.BEGINNING, SWT.BEGINNING, false, false, 2, 1)); Label backupTextLabel = new Label(container, SWT.WRAP); backupTextLabel.setText( Application.IS_WINDOWS && !fErrorStatus.isOK() ? Messages.RestoreBackupPage_BACKUP_INFO_RESTART : Messages.RestoreBackupPage_BACKUP_INFO_QUIT); backupTextLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1)); ((GridData) backupTextLabel.getLayoutData()).widthHint = 200; } /* Current Profile Info */ Pair<File, Long> pair = InternalOwl.getDefault().getProfile(); File profile = pair.getFirst(); if (profile != null && profile.exists()) { Label currentProfileLabel = new Label(container, SWT.NONE); currentProfileLabel.setText(Messages.RestoreBackupPage_CURRENT_PROFILE); currentProfileLabel.setLayoutData(new GridData(SWT.BEGINNING, SWT.BEGINNING, false, false)); ((GridData) currentProfileLabel.getLayoutData()).verticalIndent = 5; Long timestamp = (pair.getSecond() != null) ? pair.getSecond() : profile.lastModified(); Label currentProfileTextLabel = new Label(container, SWT.NONE); currentProfileTextLabel.setText(NLS.bind(Messages.RestoreBackupPage_LAST_MODIFIED, fDateFormat.format(timestamp), OwlUI.getSize((int) profile.length()))); currentProfileTextLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); ((GridData) currentProfileTextLabel.getLayoutData()).verticalIndent = 5; } /* Restore Controls */ { Label chooseBackupLabel = new Label(container, SWT.NONE); chooseBackupLabel.setText(Messages.RestoreBackupPage_CHOOSE_BACKUP); chooseBackupLabel.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false)); fBackupsViewer = new ComboViewer(container, SWT.BORDER | SWT.READ_ONLY); fBackupsViewer.getControl().setLayoutData(new GridData(SWT.BEGINNING, SWT.BEGINNING, false, false)); fBackupsViewer.getCombo().setVisibleItemCount(fBackups.size()); fBackupsViewer.setContentProvider(new ArrayContentProvider()); fBackupsViewer.setLabelProvider(new LabelProvider() { @Override public String getText(Object element) { File file = (File) element; return NLS.bind(Messages.RestoreBackupPage_BACKUP_LABEL, fDateFormat.format(file.lastModified()), OwlUI.getSize((int) file.length())); } }); fBackupsViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { getContainer().updateButtons(); fConfirmRestoreCheck.setEnabled(!event.getSelection().isEmpty()); } }); fBackupsViewer.setInput(fBackups); } /* Restore Advise */ { Composite adviseContainer = new Composite(container, SWT.None); adviseContainer.setLayout(LayoutUtils.createGridLayout(1, 0, 0)); adviseContainer.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1)); ((GridData) adviseContainer.getLayoutData()).verticalIndent = 5; Label adviseLabel = new Label(adviseContainer, SWT.NONE); adviseLabel.setText(Messages.RestoreBackupPage_CAUTION); adviseLabel.setFont(OwlUI.getBold(JFaceResources.DIALOG_FONT)); adviseLabel.setLayoutData(new GridData(SWT.BEGINNING, SWT.BEGINNING, false, false)); Label adviseTextLabel = new Label(adviseContainer, SWT.WRAP); adviseTextLabel.setText(Messages.RestoreBackupPage_RESTORE_WARNING); adviseTextLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); ((GridData) adviseTextLabel.getLayoutData()).widthHint = 200; fConfirmRestoreCheck = new Button(adviseContainer, SWT.CHECK); fConfirmRestoreCheck.setText(Messages.RestoreBackupPage_CONFIRM_RESTORE); fConfirmRestoreCheck.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); ((GridData) fConfirmRestoreCheck.getLayoutData()).verticalIndent = 5; ((GridData) fConfirmRestoreCheck.getLayoutData()).horizontalIndent = 5; fConfirmRestoreCheck.setEnabled(false); fConfirmRestoreCheck.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { getContainer().updateButtons(); } }); } Dialog.applyDialogFont(container); setControl(container); } /* * @see org.eclipse.jface.wizard.WizardPage#isPageComplete() */ @Override public boolean isPageComplete() { return fBackupsViewer.getSelection().isEmpty() || fConfirmRestoreCheck.getSelection(); } File getSelectedBackup() { IStructuredSelection selection = (IStructuredSelection) fBackupsViewer.getSelection(); if (!selection.isEmpty()) return (File) selection.getFirstElement(); return null; } }