/** * Copyright (c) 2003 IBM Corporation and others. * All rights reserved.   This program and the accompanying materials * are made available under the terms of the Common Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/cpl-v10.html  * * Contributors: * IBM - Initial API and implementation */ package org.eclipse.webbrowser.internal; import java.net.URL; import java.util.Map; import java.util.HashMap; import org.eclipse.swt.graphics.Image; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.resource.ImageRegistry; /** * Utility class to handle image resources. */ public class ImageResource { // the image registry private static ImageRegistry imageRegistry; // map of image descriptors since these // will be lost by the image registry private static Map imageDescriptors; // base urls for images private static URL ICON_BASE_URL; static { try { String pathSuffix = "icons/"; ICON_BASE_URL = WebBrowserUIPlugin.getInstance().getBundle().getEntry(pathSuffix); } catch (Exception e) { Trace.trace(Trace.SEVERE, "Could not set icon base URL", e); } } private static Image[] busyImages; private static final String URL_CLCL = "clcl16/"; private static final String URL_ELCL = "elcl16/"; private static final String URL_DLCL = "dlcl16/"; private static final String URL_OBJ = "obj16/"; // --- constants for images --- // toolbar images public static final String IMG_CLCL_NAV_BACKWARD = "IMG_CLCL_NAV_BACKWARD"; public static final String IMG_CLCL_NAV_FORWARD = "IMG_CLCL_NAV_FORWARD"; public static final String IMG_CLCL_NAV_STOP = "IMG_CLCL_NAV_STOP"; public static final String IMG_CLCL_NAV_REFRESH = "IMG_CLCL_NAV_REFRESH"; public static final String IMG_CLCL_NAV_GO = "IMG_CLCL_NAV_GO"; public static final String IMG_CLCL_NAV_FAVORITES = "cfavorites"; public static final String IMG_CLCL_NAV_HOME = "IMG_CLCL_NAV_HOME"; public static final String IMG_CLCL_NAV_PRINT = "IMG_CLCL_NAV_PRINT"; public static final String IMG_ELCL_NAV_BACKWARD = "IMG_ELCL_NAV_BACKWARD"; public static final String IMG_ELCL_NAV_FORWARD = "IMG_ELCL_NAV_FORWARD"; public static final String IMG_ELCL_NAV_STOP = "IMG_ELCL_NAV_STOP"; public static final String IMG_ELCL_NAV_REFRESH = "IMG_ELCL_NAV_REFRESH"; public static final String IMG_ELCL_NAV_GO = "IMG_ELCL_NAV_GO"; public static final String IMG_ELCL_NAV_FAVORITES = "efavorites"; public static final String IMG_ELCL_NAV_HOME = "IMG_ELCL_NAV_HOME"; public static final String IMG_ELCL_NAV_PRINT = "IMG_ELCL_NAV_PRINT"; public static final String IMG_DLCL_NAV_BACKWARD = "IMG_DLCL_NAV_BACKWARD"; public static final String IMG_DLCL_NAV_FORWARD = "IMG_DLCL_NAV_FORWARD"; public static final String IMG_DLCL_NAV_STOP = "IMG_DLCL_NAV_STOP"; public static final String IMG_DLCL_NAV_REFRESH = "IMG_DLCL_NAV_REFRESH"; public static final String IMG_DLCL_NAV_GO = "IMG_DLCL_NAV_GO"; public static final String IMG_DLCL_NAV_FAVORITES = "dfavorites"; public static final String IMG_DLCL_NAV_HOME = "IMG_DLCL_NAV_HOME"; public static final String IMG_DLCL_NAV_PRINT = "IMG_DLCL_NAV_PRINT"; // general object images public static final String IMG_INTERNAL_BROWSER = "internalBrowser"; public static final String IMG_EXTERNAL_BROWSER = "externalBrowser"; public static final String IMG_FAVORITE = "favorite"; /** * Cannot construct an ImageResource. Use static methods only. */ private ImageResource() { } /** * Returns the busy images for the Web browser. * * @return org.eclipse.swt.graphics.Image[] */ public static Image[] getBusyImages() { return busyImages; } /** * Return the image with the given key. * * @param key java.lang.String * @return org.eclipse.swt.graphics.Image */ public static Image getImage(String key) { if (imageRegistry == null) initializeImageRegistry(); return imageRegistry.get(key); } /** * Return the image descriptor with the given key. * * @param key java.lang.String * @return org.eclipse.jface.resource.ImageDescriptor */ public static ImageDescriptor getImageDescriptor(String key) { if (imageRegistry == null) initializeImageRegistry(); return (ImageDescriptor) imageDescriptors.get(key); } /** * Initialize the image resources. */ protected static void initializeImageRegistry() { imageRegistry = new ImageRegistry(); imageDescriptors = new HashMap(); // load Web browser images registerImage(IMG_ELCL_NAV_BACKWARD, URL_ELCL + "nav_backward.gif"); registerImage(IMG_ELCL_NAV_FORWARD, URL_ELCL + "nav_forward.gif"); registerImage(IMG_ELCL_NAV_STOP, URL_ELCL + "nav_stop.gif"); registerImage(IMG_ELCL_NAV_REFRESH, URL_ELCL + "nav_refresh.gif"); registerImage(IMG_ELCL_NAV_GO, URL_ELCL + "nav_go.gif"); registerImage(IMG_ELCL_NAV_FAVORITES, URL_ELCL + "add_favorite.gif"); registerImage(IMG_ELCL_NAV_HOME, URL_ELCL + "nav_home.gif"); registerImage(IMG_ELCL_NAV_PRINT, URL_ELCL + "nav_print.gif"); registerImage(IMG_CLCL_NAV_BACKWARD, URL_CLCL + "nav_backward.gif"); registerImage(IMG_CLCL_NAV_FORWARD, URL_CLCL + "nav_forward.gif"); registerImage(IMG_CLCL_NAV_STOP, URL_CLCL + "nav_stop.gif"); registerImage(IMG_CLCL_NAV_REFRESH, URL_CLCL + "nav_refresh.gif"); registerImage(IMG_CLCL_NAV_GO, URL_CLCL + "nav_go.gif"); registerImage(IMG_CLCL_NAV_FAVORITES, URL_CLCL + "add_favorite.gif"); registerImage(IMG_CLCL_NAV_HOME, URL_CLCL + "nav_home.gif"); registerImage(IMG_CLCL_NAV_PRINT, URL_CLCL + "nav_print.gif"); registerImage(IMG_DLCL_NAV_BACKWARD, URL_DLCL + "nav_backward.gif"); registerImage(IMG_DLCL_NAV_FORWARD, URL_DLCL + "nav_forward.gif"); registerImage(IMG_DLCL_NAV_STOP, URL_DLCL + "nav_stop.gif"); registerImage(IMG_DLCL_NAV_REFRESH, URL_DLCL + "nav_refresh.gif"); registerImage(IMG_DLCL_NAV_GO, URL_DLCL + "nav_go.gif"); registerImage(IMG_DLCL_NAV_FAVORITES, URL_DLCL + "add_favorite.gif"); registerImage(IMG_DLCL_NAV_HOME, URL_DLCL + "nav_home.gif"); registerImage(IMG_DLCL_NAV_PRINT, URL_DLCL + "nav_print.gif"); registerImage(IMG_INTERNAL_BROWSER, URL_OBJ + "internal_browser.gif"); registerImage(IMG_EXTERNAL_BROWSER, URL_OBJ + "external_browser.gif"); registerImage(IMG_FAVORITE, URL_OBJ + "favorite.gif"); // busy images busyImages = new Image[13]; for (int i = 0; i < 13; i++) { registerImage("busy" + i, URL_OBJ + "frames" + java.io.File.separator + "frame" + (i+1) + ".gif"); busyImages[i] = getImage("busy" + i); } } /** * Register an image with the registry. * * @param key java.lang.String * @param partialURL java.lang.String */ private static void registerImage(String key, String partialURL) { try { ImageDescriptor id = ImageDescriptor.createFromURL(new URL(ICON_BASE_URL, partialURL)); imageRegistry.put(key, id); imageDescriptors.put(key, id); } catch (Exception e) { Trace.trace(Trace.WARNING, "Error registering image " + key + " from " + partialURL, e); } } }