DependenciesPlugin.java

/*******************************************************************************
 * Copyright (c) 2008 Scott Stanchfield
 * 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
 *******************************************************************************/
package com.javadude.dependencies;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.resource.ColorRegistry;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The main plugin class to be used in the desktop.
 */
public class DependenciesPlugin extends AbstractUIPlugin {
    public static final String PLUGIN_ID = "com.javadude.dependencies";
    //Color registry instance to allow the view to use colors
    private ColorRegistry colorRegistry;

    //The shared instance.
    private static DependenciesPlugin plugin;

    /**
     * The constructor.
     */
    public DependenciesPlugin() {
        DependenciesPlugin.plugin = this;
    }

    /**
     * This method is called upon plug-in activation
     */
    @Override
    public void start(BundleContext context) throws Exception {
        super.start(context);
    }

    /**
     * This method is called when the plug-in is stopped
     */
    @Override
    public void stop(BundleContext context) throws Exception {
        super.stop(context);
        DependenciesPlugin.plugin = null;
    }

    /**
     * Returns the shared instance.
     */
    public static DependenciesPlugin getDefault() {
        return DependenciesPlugin.plugin;
    }

    /**
     * Returns an image descriptor for the image file at the given
     * plug-in relative path.
     *
     * @param path the path
     * @return the image descriptor
     */
    public static ImageDescriptor getImageDescriptor(String path) {
        return AbstractUIPlugin.imageDescriptorFromPlugin("com.javadude.dependencies", path);
    }

    public static void error(int code, String message, Throwable t) {
        IStatus status =
            new Status(IStatus.ERROR, DependenciesPlugin.PLUGIN_ID, code, message, t);
        ErrorDialog.openError(Display.getDefault().getActiveShell(), "Property Editor Error", message, status);
        DependenciesPlugin.getDefault().getLog().log(status);
    }

    /**
     * Get a color from the color registry
     */
    public Color getColor(String colorName) {
        if (colorRegistry == null) {
            colorRegistry = new ColorRegistry();
        }

        return colorRegistry.get(colorName);
    }

    /**
     * Set a color in the color registry
     */
    public void setColor(String colorName, int red, int green, int blue) {
        if (colorRegistry == null) {
            colorRegistry = new ColorRegistry();
        }
        colorRegistry.put(colorName, new RGB(red, green, blue));
    }
}