org.eclipse.rcptt.ui.dialogs.LinkMessageDialogWithToggle.java Source code

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Here is the source code for org.eclipse.rcptt.ui.dialogs.LinkMessageDialogWithToggle.java

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/*******************************************************************************
 * Copyright (c) 2009, 2014 Xored Software Inc 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:
 *     Xored Software Inc - initial API and implementation and/or initial documentation
 *******************************************************************************/
package org.eclipse.rcptt.ui.dialogs;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialogWithToggle;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.program.Program;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Link;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public abstract class LinkMessageDialogWithToggle extends MessageDialogWithToggle {

    protected static final String TOGGLE_MESSAGE = "Never show this dialog again";
    private static final Pattern LINK_PATTERN = Pattern.compile("<a>(.*)</a>");

    private final String linkMessage;
    private final String link;
    private final IEclipsePreferences prefs;

    public LinkMessageDialogWithToggle(Shell parentShell, String dialogTitle, Image image, String linkMessage,
            int dialogImageType, String[] dialogButtonLabels, int defaultIndex, String toggleMessage,
            boolean toggleState, String prefKey, IEclipsePreferences prefs) {
        super(parentShell, dialogTitle, image, null, dialogImageType, dialogButtonLabels, defaultIndex,
                toggleMessage, toggleState);
        Matcher matcher = LINK_PATTERN.matcher(linkMessage);
        this.linkMessage = linkMessage;
        String link = null;
        while (matcher.find()) {
            if (link != null)
                throw new IllegalArgumentException("More than one link found");
            link = matcher.group(1);
        }
        if (link != null)
            this.link = link.contains("@") ? "mailto:" + link : link;
        else
            this.link = null;
        setPrefKey(prefKey);
        this.prefs = prefs;
        setShellStyle(getShellStyle() | SWT.SHEET);
    }

    @Override
    protected Control createMessageArea(Composite composite) {
        super.createMessageArea(composite);
        Link link = new Link(composite, SWT.NONE);
        link.setText(linkMessage);
        GridDataFactory.fillDefaults().align(SWT.FILL, SWT.BEGINNING).grab(true, false)
                .hint(convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH), SWT.DEFAULT)
                .applyTo(link);
        link.addListener(SWT.Selection, new Listener() {
            public void handleEvent(Event event) {
                Program.launch(LinkMessageDialogWithToggle.this.link);
            }
        });
        return composite;
    }

    @Override
    public int open() {
        String show = prefs.get(getPrefKey(), MessageDialogWithToggle.PROMPT);
        if (!MessageDialogWithToggle.NEVER.equals(show)) {
            int result = super.open();
            if (getToggleState()) {
                prefs.put(getPrefKey(), MessageDialogWithToggle.NEVER);
            }
            return result;
        }
        return 0;
    }

}