Java tutorial
/******************************************************************************* * Copyright (c) 2015 MINRES Technologies GmbH 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: * MINRES Technologies GmbH - initial API and implementation *******************************************************************************/ package com.minres.scviewer.e4.application.parts; import java.awt.Desktop; import java.io.IOException; import java.net.URISyntaxException; import java.util.regex.Matcher; import java.util.regex.Pattern; import javax.annotation.PostConstruct; import javax.inject.Inject; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.StyleRange; import org.eclipse.swt.custom.StyledText; import org.eclipse.swt.events.PaintEvent; import org.eclipse.swt.events.PaintListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Canvas; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.wb.swt.ResourceManager; import org.eclipse.wb.swt.SWTResourceManager; /** * The Class AboutDialog. */ public class AboutDialog extends Dialog { /** The product title. */ private String productTitle = "\nSCViewer - a SystemC waveform viewer\n\nVersion: 1.0\n"; /** The copyright text. */ private String copyrightText = "\nCopyright (c) 2015 MINRES Technologies GmbH and others.\n" + "\n" + "All rights reserved. MINRES and the MINRES logo are trademarks of MINRES Technologies GmbH, http://www.minres.com/ . " + "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\n" + "\n\nSources code is hosted at GitHub: https://github.com/eyck/txviewer\n"; /** * Create the dialog. * * @param parentShell the parent shell */ @Inject public AboutDialog(Shell parentShell) { super(parentShell); } /** * Create contents of the dialog. * * @param parent the parent * @return the control */ @Override protected Control createDialogArea(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); GridData gd_composite = new GridData(SWT.LEFT, SWT.FILL, true, true); gd_composite.widthHint = 600; gd_composite.heightHint = 250; composite.setLayoutData(gd_composite); composite.setLayout(new GridLayout(2, false)); final Color white = SWTResourceManager.getColor(SWT.COLOR_WHITE); final Image scviewerLogo = ResourceManager.getPluginImage("com.minres.scviewer.e4.application", "icons/SCViewer_logo.png"); final Image minresLogo = ResourceManager.getPluginImage("com.minres.scviewer.e4.application", "icons/Minres_logo.png"); Canvas canvas = new Canvas(composite, SWT.NO_REDRAW_RESIZE); GridData gd_canvas = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1); gd_canvas.widthHint = 200; gd_canvas.heightHint = 250; canvas.setLayoutData(gd_canvas); canvas.addPaintListener(new PaintListener() { public void paintControl(PaintEvent e) { e.gc.setBackground(white); e.gc.fillRectangle(e.x, e.y, e.width, e.height); e.gc.drawImage(scviewerLogo, 4, 0); e.gc.drawImage(minresLogo, 0, 200); } }); StyledText styledText = new StyledText(composite, SWT.BORDER); styledText.setEditable(false); GridData gd_styledText = new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1); styledText.setLayoutData(gd_styledText); styledText.setText(productTitle + copyrightText); styledText.setBackground(white); styledText.setWordWrap(true); styledText.setLeftMargin(5); StyleRange styleRange = new StyleRange(); styleRange.start = 0; styleRange.length = productTitle.length(); styleRange.fontStyle = SWT.BOLD; styledText.setStyleRange(styleRange); ///^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/ Pattern pattern = Pattern.compile("https?:\\/\\/([\\da-z\\.-]+)\\.([a-z\\.]{2,6})([\\/\\w\\.-]*)*\\/?"); // in case you would like to ignore case sensitivity, // you could use this statement: // Pattern pattern = Pattern.compile("\\s+", Pattern.CASE_INSENSITIVE); Matcher matcher = pattern.matcher(productTitle + copyrightText); // check all occurance while (matcher.find()) { styleRange = new StyleRange(); styleRange.underline = true; styleRange.underlineStyle = SWT.UNDERLINE_LINK; styleRange.data = matcher.group(); styleRange.start = matcher.start(); styleRange.length = matcher.end() - matcher.start(); styledText.setStyleRange(styleRange); } styledText.addListener(SWT.MouseDown, new Listener() { @Override public void handleEvent(Event event) { // It is up to the application to determine when and how a link should be activated. // links are activated on mouse down when the control key is held down // if ((event.stateMask & SWT.MOD1) != 0) { try { int offset = ((StyledText) event.widget).getOffsetAtLocation(new Point(event.x, event.y)); StyleRange style = ((StyledText) event.widget).getStyleRangeAtOffset(offset); if (style != null && style.underline && style.underlineStyle == SWT.UNDERLINE_LINK) { Desktop.getDesktop().browse(new java.net.URI(style.data.toString())); } } catch (IOException | URISyntaxException | IllegalArgumentException e) { } // } } }); styleRange.start = 0; return composite; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ protected void createButtonsForButtonBar(Composite parent) { // create OK button createButton(parent, IDialogConstants.OK_ID, IDialogConstants.CLOSE_LABEL, true); } /** * Open the dialog. * @return the result */ @PostConstruct @Override public int open() { return super.open(); } }