org.eclipse.edt.debug.ui.launching.EGLJavaLaunchUtils.java Source code

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Here is the source code for org.eclipse.edt.debug.ui.launching.EGLJavaLaunchUtils.java

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/*******************************************************************************
 * Copyright  2011, 2013 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
 *
 *******************************************************************************/
package org.eclipse.edt.debug.ui.launching;

import java.net.MalformedURLException;
import java.net.URL;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
import org.eclipse.edt.debug.internal.ui.EDTDebugUIPlugin;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;

public class EGLJavaLaunchUtils {
    private EGLJavaLaunchUtils() {
        // No Instances
    }

    private static boolean imageRegistryInitialized;
    private static final Object initializeMutex = new Object();

    /**
     * The image registry which holds <code>Image</code>s
     */
    private static ImageRegistry imageRegistry;

    private static URL ICON_BASE_URL;
    static {
        ICON_BASE_URL = EDTDebugUIPlugin.getDefault().getBundle().getEntry("icons/full/"); //$NON-NLS-1$
    }

    public static Image getImage(String key) {
        if (!imageRegistryInitialized) {
            initializeImageRegistry();
        }
        return getImageRegistry().get(key);
    }

    private static ImageRegistry initializeImageRegistry() {
        synchronized (initializeMutex) {
            if (!imageRegistryInitialized) {
                imageRegistry = new ImageRegistry(getStandardDisplay());
                declareImages();
                imageRegistryInitialized = true;
            }
        }
        return imageRegistry;
    }

    private final static void declareRegistryImage(String key, String path) {
        ImageDescriptor desc = ImageDescriptor.getMissingImageDescriptor();
        try {
            desc = ImageDescriptor.createFromURL(makeIconFileURL(path));
        } catch (MalformedURLException me) {
        }
        imageRegistry.put(key, desc);
    }

    private static URL makeIconFileURL(String iconPath) throws MalformedURLException {
        if (ICON_BASE_URL == null) {
            throw new MalformedURLException();
        }
        return new URL(ICON_BASE_URL, iconPath);
    }

    private static void declareImages() {
        declareRegistryImage(IEGLJavaLaunchConstants.IMG_LAUNCH_MAIN_TAB, "obj16/main_tab_obj.gif"); //$NON-NLS-1$
    }

    public static ImageRegistry getImageRegistry() {
        if (imageRegistry == null) {
            imageRegistry = new ImageRegistry();
        }
        return imageRegistry;
    }

    public static Display getStandardDisplay() {
        Display display = Display.getCurrent();
        if (display == null) {
            display = Display.getDefault();
        }
        return display;
    }

    public static void addJavaAttributes(String projectName, ILaunchConfigurationWorkingCopy configuration) {
        if (projectName != null && projectName.length() != 0) {
            IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projectName);
            if (project != null && project.isAccessible()) {
                try {
                    if (project.hasNature(JavaCore.NATURE_ID)) {
                        configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME,
                                projectName);
                    }
                } catch (CoreException e) {
                }
            }
        }
        configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_MAIN_TYPE_NAME,
                "org.eclipse.edt.javart.ide.MainProgramLauncher"); //$NON-NLS-1$
        configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_STOP_IN_MAIN, false);
    }
}