Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2008 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.commons.workbench.browser; import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.io.IOException; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.window.Window; import org.eclipse.mylyn.commons.ui.PlatformUiUtil; import org.eclipse.mylyn.internal.commons.workbench.CommonsWorkbenchPlugin; import org.eclipse.swt.SWT; import org.eclipse.swt.browser.Browser; import org.eclipse.swt.browser.LocationEvent; import org.eclipse.swt.browser.LocationListener; import org.eclipse.swt.browser.StatusTextEvent; import org.eclipse.swt.browser.StatusTextListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.GridLayout; 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.Text; import org.eclipse.ui.browser.IWorkbenchBrowserSupport; import org.eclipse.ui.statushandlers.StatusManager; /** * Dialog that show the contents of an HTML page or the content of a URL in a dialog. * * @author Shawn Minto * @author Steffen Pingel * @since 3.7 */ public class WebBrowserDialog extends MessageDialog { private String text; private Browser browser; private Label statusLabel; private Text locationLabel; private boolean showLocation = true; private boolean showStatus = true; public WebBrowserDialog(Shell parentShell, String dialogTitle, Image dialogTitleImage, String dialogMessage, int dialogImageType, String[] dialogButtonLabels, int defaultIndex) { super(parentShell, dialogTitle, dialogTitleImage, dialogMessage, dialogImageType, dialogButtonLabels, defaultIndex); this.setShellStyle(SWT.SHELL_TRIM | SWT.RESIZE); } public void setText(String text) { this.text = text; if (browser != null) { browser.setText(text); } } public String getText() { return text; } public boolean setUrl(String url, String postData, String[] headers) { return getBrowser().setUrl(url, postData, headers); } public static int openText(Shell parent, String title, String message, String text) { if (PlatformUiUtil.hasInternalBrowser()) { WebBrowserDialog dialog = new WebBrowserDialog(parent, title, null, message, NONE, new String[] { IDialogConstants.OK_LABEL }, 0); dialog.setText(text); return dialog.open(); } else { File file = null; try { file = File.createTempFile("temp", ".html"); //$NON-NLS-1$ //$NON-NLS-2$ file.deleteOnExit(); BufferedWriter writer = new BufferedWriter(new FileWriter(file)); try { writer.write(message); } finally { writer.close(); } } catch (IOException e) { if (file != null) { file.delete(); } StatusManager.getManager().handle(new Status(IStatus.ERROR, CommonsWorkbenchPlugin.ID_PLUGIN, "Unexpected error while displaying page", e), StatusManager.LOG); //$NON-NLS-1$ return Window.CANCEL; } BrowserUtil.openUrl(file.toURI().toString(), IWorkbenchBrowserSupport.AS_EXTERNAL); return Window.OK; } } @Override public Control createCustomArea(Composite parent) { GridLayout layout = new GridLayout(1, false); layout.marginHeight = 0; layout.marginWidth = 0; parent.setLayout(layout); if (showLocation) { locationLabel = new Text(parent, SWT.READ_ONLY | SWT.BORDER); locationLabel.setBackground(parent.getBackground()); GridDataFactory.fillDefaults().grab(true, false).applyTo(locationLabel); } browser = new Browser(parent, SWT.BORDER); GridDataFactory.fillDefaults().grab(true, true).applyTo(browser); if (showStatus) { statusLabel = new Label(parent, SWT.NONE); GridDataFactory.fillDefaults().grab(true, false).applyTo(statusLabel); browser.addStatusTextListener(new StatusTextListener() { public void changed(StatusTextEvent event) { statusLabel.setText((event.text != null) ? event.text : ""); //$NON-NLS-1$ } }); } if (showLocation) { browser.addLocationListener(new LocationListener() { public void changing(LocationEvent event) { // ignore } public void changed(LocationEvent event) { if (!event.top) { // ignore nested frames return; } locationLabel.setText(event.location != null ? event.location : ""); //$NON-NLS-1$ } }); } if (text != null) { browser.setText(text); } Dialog.applyDialogFont(parent); return parent; } public Browser getBrowser() { return browser; } @Override protected Point getInitialSize() { return new Point(500, 500); } /** * @since 3.11 */ public boolean getShowLocation() { return showLocation; } /** * @since 3.11 */ public void setShowLocation(boolean showLocation) { if (locationLabel != null) { throw new IllegalStateException("Control already created"); //$NON-NLS-1$ } this.showLocation = showLocation; } /** * @since 3.11 */ public boolean getShowStatus() { return showStatus; } /** * @since 3.11 */ public void setShowStatus(boolean showStatus) { if (statusLabel != null) { throw new IllegalStateException("Control already created"); //$NON-NLS-1$ } this.showStatus = showStatus; } }