1 files changed, 218 insertions, 0 deletions
diff --git a/archive/org.eclipse.qvt.declarative.editor.imp.runtime/src/org/eclipse/imp/runtime/PluginImages.java b/archive/org.eclipse.qvt.declarative.editor.imp.runtime/src/org/eclipse/imp/runtime/PluginImages.java
new file mode 100644
index 000000000..776859487
--- /dev/null
+++ b/archive/org.eclipse.qvt.declarative.editor.imp.runtime/src/org/eclipse/imp/runtime/PluginImages.java
@@ -0,0 +1,218 @@
+/*******************************************************************************
+* Copyright (c) 2007 IBM Corporation.
+* 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:
+*    Robert Fuhrer (rfuhrer@watson.ibm.com) - initial API and implementation
+*******************************************************************************/
+
+package org.eclipse.imp.runtime;
+
+import java.net.URL;
+import java.util.HashMap;
+import java.util.Map;
+import org.eclipse.core.runtime.FileLocator;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.Path;
+import org.eclipse.jface.action.IAction;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.jface.resource.ImageRegistry;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.ImageData;
+import org.osgi.framework.Bundle;
+
+public class PluginImages {
+    // The plug-in registry
+    private static ImageRegistry fgImageRegistry= null;
+
+    private static Map<String,ImageDescriptor> fgAvoidSWTErrorMap= null;
+
+    public static final IPath ICONS_PATH= new Path("/icons"); //$NON-NLS-1$
+
+    private static final String NAME_PREFIX= ""; //$NON-NLS-1$
+    private static final int NAME_PREFIX_LENGTH= NAME_PREFIX.length();
+
+    public static final String VIEW_MENU_IMAGE= NAME_PREFIX + "view_menu.gif"; //$NON-NLS-1$
+
+    public static final ImageDescriptor viewMenuImageDesc= createManaged(NAME_PREFIX, VIEW_MENU_IMAGE);
+
+    public static final String FILE_IMAGE= NAME_PREFIX + "file.gif"; //$NON-NLS-1$
+
+    public static final ImageDescriptor fileImageDesc= createManaged(NAME_PREFIX, FILE_IMAGE);
+
+    public static final String FOLDER_IMAGE= NAME_PREFIX + "folder.gif"; //$NON-NLS-1$
+
+    public static final ImageDescriptor folderImageDesc= createManaged(NAME_PREFIX, FOLDER_IMAGE);
+
+    public static final String PROJECT_IMAGE= NAME_PREFIX + "project.gif"; //$NON-NLS-1$
+
+    public static final ImageDescriptor projectImageDesc= createManaged(NAME_PREFIX, PROJECT_IMAGE);
+
+    public static final ImageDescriptor DESC_OVR_WARNING= createUnManagedCached(NAME_PREFIX, "warning_co.gif"); //$NON-NLS-1$
+
+    public static final ImageDescriptor DESC_OVR_ERROR= createUnManagedCached(NAME_PREFIX, "error_co.gif"); //$NON-NLS-1$
+
+    private static final class CachedImageDescriptor extends ImageDescriptor {
+        private ImageDescriptor fDescriptor;
+        private ImageData fData;
+
+        public CachedImageDescriptor(ImageDescriptor descriptor) {
+            fDescriptor = descriptor;
+        }
+
+        public ImageData getImageData() {
+            if (fData == null) {
+                fData= fDescriptor.getImageData();
+            }
+            return fData;
+        }
+    }
+
+    /**
+     * Returns the image managed under the given key in this registry.
+     * 
+     * @param key the image's key
+     * @return the image managed under the given key
+     */
+    public static Image get(String key) {
+        return getImageRegistry().get(key);
+    }
+
+    /**
+     * Returns the image descriptor for the given key in this registry. Might be called in a non-UI thread.
+     * 
+     * @param key the image's key
+     * @return the image descriptor for the given key
+     */
+    public static ImageDescriptor getDescriptor(String key) {
+        if (fgImageRegistry == null) {
+            return fgAvoidSWTErrorMap.get(key);
+        }
+        return getImageRegistry().getDescriptor(key);
+    }
+
+    /**
+     * Sets the three image descriptors for enabled, disabled, and hovered to an action. The actions
+     * are retrieved from the *tool16 folders.
+     * 
+     * @param action	the action
+     * @param iconName	the icon name
+     */
+    public static void setToolImageDescriptors(IAction action, String iconName) {
+        setImageDescriptors(action, "tool16", iconName); //$NON-NLS-1$
+    }
+
+    /**
+     * Sets the three image descriptors for enabled, disabled, and hovered to an action. The actions
+     * are retrieved from the *lcl16 folders.
+     * 
+     * @param action	the action
+     * @param iconName	the icon name
+     */
+    public static void setLocalImageDescriptors(IAction action, String iconName) {
+        setImageDescriptors(action, "lcl16", iconName); //$NON-NLS-1$
+    }
+
+    /*
+     * Helper method to access the image registry from the JavaPlugin class.
+     */
+    /* package */static ImageRegistry getImageRegistry() {
+        if (fgImageRegistry == null) {
+            fgImageRegistry= new ImageRegistry();
+            for(String key: fgAvoidSWTErrorMap.keySet()) {
+                fgImageRegistry.put(key, fgAvoidSWTErrorMap.get(key));
+            }
+            fgAvoidSWTErrorMap= null;
+        }
+        return fgImageRegistry;
+    }
+
+    //---- Helper methods to access icons on the file system --------------------------------------
+    private static void setImageDescriptors(IAction action, String type, String relPath) {
+        ImageDescriptor id= create("d" + type, relPath, false); //$NON-NLS-1$
+        if (id != null)
+            action.setDisabledImageDescriptor(id);
+        /*
+         * id= create("c" + type, relPath, false); //$NON-NLS-1$
+         * if (id != null)
+         * 		action.setHoverImageDescriptor(id);
+         */
+        ImageDescriptor descriptor= create("e" + type, relPath); //$NON-NLS-1$
+        action.setHoverImageDescriptor(descriptor);
+        action.setImageDescriptor(descriptor);
+    }
+
+    private static ImageDescriptor createManaged(String prefix, String name) {
+        ImageDescriptor result= create(prefix, name.substring(NAME_PREFIX_LENGTH), true);
+        if (fgAvoidSWTErrorMap == null) {
+            fgAvoidSWTErrorMap= new HashMap<String,ImageDescriptor>();
+        }
+        fgAvoidSWTErrorMap.put(name, result);
+        if (fgImageRegistry != null) {
+            RuntimePlugin.getInstance().writeErrorMsg("Image registry already defined"); //$NON-NLS-1$
+        }
+        return result;
+    }
+
+    private static ImageDescriptor createManaged(String prefix, String name, String key) {
+        ImageDescriptor result= create(prefix, name.substring(NAME_PREFIX_LENGTH), true);
+        if (fgAvoidSWTErrorMap == null) {
+            fgAvoidSWTErrorMap= new HashMap<String,ImageDescriptor>();
+        }
+        fgAvoidSWTErrorMap.put(key, result);
+        if (fgImageRegistry != null) {
+            RuntimePlugin.getInstance().writeErrorMsg("Image registry already defined"); //$NON-NLS-1$
+        }
+        return result;
+    }
+
+    /*
+     * Creates an image descriptor for the given prefix and name in the JDT UI bundle and let tye descriptor cache the image data.
+     * If no image could be found, the 'missing image descriptor' is returned.
+     */
+    private static ImageDescriptor createUnManagedCached(String prefix, String name) {
+        return new CachedImageDescriptor(create(prefix, name, true));
+    }
+
+    /*
+     * Creates an image descriptor for the given prefix and name in the JDT UI bundle. The path can
+     * contain variables like $NL$.
+     * If no image could be found, <code>useMissingImageDescriptor</code> decides if either
+     * the 'missing image descriptor' is returned or <code>null</code>.
+     * or <code>null</code>.
+     */
+    private static ImageDescriptor create(String prefix, String name, boolean useMissingImageDescriptor) {
+        IPath path= ICONS_PATH.append(prefix).append(name);
+        return createImageDescriptor(RuntimePlugin.getInstance().getBundle(), path, useMissingImageDescriptor);
+    }
+
+    /*
+     * Creates an image descriptor for the given prefix and name in the JDT UI bundle. The path can
+     * contain variables like $NL$.
+     * If no image could be found, the 'missing image descriptor' is returned.
+     */
+    private static ImageDescriptor create(String prefix, String name) {
+        return create(prefix, name, true);
+    }
+
+    /*
+     * Creates an image descriptor for the given path in a bundle. The path can contain variables
+     * like $NL$.
+     * If no image could be found, <code>useMissingImageDescriptor</code> decides if either
+     * the 'missing image descriptor' is returned or <code>null</code>.
+     * Added for 3.1.1.
+     */
+    public static ImageDescriptor createImageDescriptor(Bundle bundle, IPath path, boolean useMissingImageDescriptor) {
+        URL url= FileLocator.find(bundle, path, null);
+        if (url != null) {
+            return ImageDescriptor.createFromURL(url);
+        }
+        if (useMissingImageDescriptor) {
+            return ImageDescriptor.getMissingImageDescriptor();
+        }
+        return null;
+    }
+}