au.gov.ga.earthsci.eclipse.extras.browser.WebBrowserUtil.java Source code

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Here is the source code for au.gov.ga.earthsci.eclipse.extras.browser.WebBrowserUtil.java

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/*******************************************************************************
 * Copyright (c) 2003, 2011 IBM Corporation 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:
 *     IBM Corporation - Initial API and implementation
 * Martin Oberhuber (Wind River) - [292882] Default Browser on Solaris
 *******************************************************************************/
package au.gov.ga.earthsci.eclipse.extras.browser;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

/**
 * Utility class for the Web browser tools.
 */
public class WebBrowserUtil {
    public static Boolean isInternalBrowserOperational;

    private static final char STYLE_SEP = '-';

    private static final int DEFAULT_STYLE = BrowserViewer.BUTTON_BAR | BrowserViewer.LOCATION_BAR;

    /**
     * WebBrowserUtil constructor comment.
     */
    public WebBrowserUtil() {
        super();
    }

    /**
     * Returns true if we're running on Windows.
     * 
     * @return boolean
     */
    public static boolean isWindows() {
        String os = System.getProperty("os.name"); //$NON-NLS-1$
        if (os != null && os.toLowerCase().indexOf("win") >= 0) //$NON-NLS-1$
            return true;
        return false;
    }

    /**
     * Returns true if we're running on linux.
     * 
     * @return boolean
     */
    public static boolean isLinux() {
        String os = System.getProperty("os.name"); //$NON-NLS-1$
        if (os != null && os.toLowerCase().indexOf("lin") >= 0) //$NON-NLS-1$
            return true;
        return false;
    }

    /**
     * Open a dialog window.
     * 
     * @param message
     *            java.lang.String
     */
    public static void openError(String message) {
        Display d = Display.getCurrent();
        if (d == null)
            d = Display.getDefault();

        Shell shell = d.getActiveShell();
        MessageDialog.openError(shell, Messages.errorDialogTitle, message);
    }

    /**
     * Open a dialog window.
     * 
     * @param message
     *            java.lang.String
     */
    public static void openMessage(String message) {
        Display d = Display.getCurrent();
        if (d == null)
            d = Display.getDefault();

        Shell shell = d.getActiveShell();
        MessageDialog.openInformation(shell, Messages.searchingTaskName, message);
    }

    /**
     * Encodes browser style in the secondary id as id-style
     * 
     * @param browserId
     * @param style
     * @return secondaryId
     */
    public static String encodeStyle(String browserId, int style) {
        return browserId + STYLE_SEP + style;
    }

    /**
     * Decodes secondary id into a browser style.
     * 
     * @param secondaryId
     * @return style
     */
    public static int decodeStyle(String secondaryId) {
        if (secondaryId != null) {
            int sep = secondaryId.lastIndexOf(STYLE_SEP);
            if (sep != -1) {
                String stoken = secondaryId.substring(sep + 1);
                try {
                    return Integer.parseInt(stoken);
                } catch (NumberFormatException e) {
                    // ignore
                }
            }
        }
        return DEFAULT_STYLE;
    }

    public static String decodeId(String encodedId) {
        int sep = encodedId.lastIndexOf(STYLE_SEP);
        if (sep != -1) {
            return encodedId.substring(0, sep);
        }
        return encodedId;
    }
}