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/******************************************************************************* * Copyright (c) 2004, 2005 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.wst.css.ui.internal.image; import java.util.HashMap; import java.util.Map; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.resource.ImageRegistry; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.swt.graphics.Image; import org.eclipse.ui.plugin.AbstractUIPlugin; import org.eclipse.wst.css.ui.internal.CSSUIPlugin; import org.eclipse.wst.css.ui.internal.editor.CSSEditorPluginImages; public class CSSImageHelper { private static CSSImageHelper fInstance = null; /** * singleton */ public synchronized static CSSImageHelper getInstance() { if (fInstance == null) { fInstance = new CSSImageHelper(); } return fInstance; } private HashMap fImageDescRegistry = null; // save a descriptor for each image private Map fTypeMap = null; /** * */ private CSSImageHelper() { super(); } /** * */ private Image createImage(String resource) { ImageDescriptor desc = AbstractUIPlugin.imageDescriptorFromPlugin(CSSUIPlugin.ID, resource); Image image = null; if (desc == null) { desc = ImageDescriptor.getMissingImageDescriptor(); image = desc.createImage(); } else { image = desc.createImage(); getImageRegistry().put(resource, image); } return image; } /** * Creates an image descriptor from the given imageFilePath and adds the * image descriptor to the image descriptor registry. If an image * descriptor could not be created, the default "missing" image descriptor * is returned but not added to the image descriptor registry. * * @param imageFilePath * @return ImageDescriptor image descriptor for imageFilePath or default * "missing" image descriptor if resource could not be found */ private ImageDescriptor createImageDescriptor(String imageFilePath) { ImageDescriptor imageDescriptor = AbstractUIPlugin.imageDescriptorFromPlugin(CSSUIPlugin.ID, imageFilePath); if (imageDescriptor != null) { getImageDescriptorRegistry().put(imageFilePath, imageDescriptor); } else { imageDescriptor = ImageDescriptor.getMissingImageDescriptor(); } return imageDescriptor; } /** * by type */ public Image getImage(CSSImageType type) { if (fTypeMap == null) { fTypeMap = new HashMap(); fTypeMap.put(CSSImageType.STYLESHEET, CSSEditorPluginImages.IMG_OBJ_STYLESHEET); fTypeMap.put(CSSImageType.RULE_CHARSET, CSSEditorPluginImages.IMG_OBJ_RULE_CHARSET); fTypeMap.put(CSSImageType.RULE_FONTFACE, CSSEditorPluginImages.IMG_OBJ_RULE_FONTFACE); fTypeMap.put(CSSImageType.RULE_IMPORT, CSSEditorPluginImages.IMG_OBJ_RULE_IMPORT); fTypeMap.put(CSSImageType.RULE_MEDIA, CSSEditorPluginImages.IMG_OBJ_RULE_MEDIA); fTypeMap.put(CSSImageType.RULE_PAGE, CSSEditorPluginImages.IMG_OBJ_RULE_PAGE); fTypeMap.put(CSSImageType.RULE_STYLE, CSSEditorPluginImages.IMG_OBJ_RULE_STYLE); fTypeMap.put(CSSImageType.RULE_UNKNOWN, CSSEditorPluginImages.IMG_OBJ_RULE_UNKNOWN); fTypeMap.put(CSSImageType.SELECTOR_CLASS, CSSEditorPluginImages.IMG_OBJ_SELECTOR_CLASS); fTypeMap.put(CSSImageType.SELECTOR_ID, CSSEditorPluginImages.IMG_OBJ_SELECTOR_ID); fTypeMap.put(CSSImageType.SELECTOR_PSEUDO, CSSEditorPluginImages.IMG_OBJ_SELECTOR_PSEUDO); fTypeMap.put(CSSImageType.SELECTOR_TAG, CSSEditorPluginImages.IMG_OBJ_SELECTOR_TAG); fTypeMap.put(CSSImageType.SELECTOR_LINK, CSSEditorPluginImages.IMG_OBJ_SELECTOR_LINK); fTypeMap.put(CSSImageType.SELECTOR_DEFAULT, CSSEditorPluginImages.IMG_OBJ_SELECTOR_DEFAULT); fTypeMap.put(CSSImageType.VALUE_FUNCTION, CSSEditorPluginImages.IMG_OBJ_VALUE_FUNCTION); fTypeMap.put(CSSImageType.VALUE_NUMBER, CSSEditorPluginImages.IMG_OBJ_VALUE_NUMBER); fTypeMap.put(CSSImageType.VALUE_STRING, CSSEditorPluginImages.IMG_OBJ_VALUE_STRING); fTypeMap.put(CSSImageType.CATEGORY_AURAL, CSSEditorPluginImages.IMG_OBJ_CATEGORY_AURAL); fTypeMap.put(CSSImageType.CATEGORY_BOX, CSSEditorPluginImages.IMG_OBJ_CATEGORY_BOX); fTypeMap.put(CSSImageType.CATEGORY_COLORANDBACKGROUND, CSSEditorPluginImages.IMG_OBJ_CATEGORY_COLORANDBACKGROUND); fTypeMap.put(CSSImageType.CATEGORY_CONTENT, CSSEditorPluginImages.IMG_OBJ_CATEGORY_CONTENT); fTypeMap.put(CSSImageType.CATEGORY_FONT, CSSEditorPluginImages.IMG_OBJ_CATEGORY_FONT); fTypeMap.put(CSSImageType.CATEGORY_PAGE, CSSEditorPluginImages.IMG_OBJ_CATEGORY_PAGE); fTypeMap.put(CSSImageType.CATEGORY_TABLES, CSSEditorPluginImages.IMG_OBJ_CATEGORY_TABLES); fTypeMap.put(CSSImageType.CATEGORY_TEXT, CSSEditorPluginImages.IMG_OBJ_CATEGORY_TEXT); fTypeMap.put(CSSImageType.CATEGORY_UI, CSSEditorPluginImages.IMG_OBJ_CATEGORY_UI); fTypeMap.put(CSSImageType.CATEGORY_VISUAL, CSSEditorPluginImages.IMG_OBJ_CATEGORY_VISUAL); fTypeMap.put(CSSImageType.CATEGORY_DEFAULT, CSSEditorPluginImages.IMG_OBJ_CATEGORY_DEFAULT); } return getImage((String) fTypeMap.get(type)); } /** * by relative path(from here) */ public Image getImage(String resource) { if (resource == null) { return null; } Image image = getImageRegistry().get(resource); if (image == null) { image = createImage(resource); } return image; } /** * Retrieves the image descriptor associated with resource from the image * descriptor registry. If the image descriptor cannot be retrieved, * attempt to find and load the image descriptor at the location specified * in resource. * * @param resource * the image descriptor to retrieve * @return ImageDescriptor the image descriptor assocated with resource or * the default "missing" image descriptor if one could not be * found */ public ImageDescriptor getImageDescriptor(String resource) { ImageDescriptor imageDescriptor = null; Object o = getImageDescriptorRegistry().get(resource); if (o == null) { // create a descriptor imageDescriptor = createImageDescriptor(resource); } else { imageDescriptor = (ImageDescriptor) o; } return imageDescriptor; } /** * Returns the image descriptor registry for this plugin. * * @return HashMap - image descriptor registry for this plugin */ private HashMap getImageDescriptorRegistry() { if (fImageDescRegistry == null) fImageDescRegistry = new HashMap(); return fImageDescRegistry; } private ImageRegistry getImageRegistry() { return JFaceResources.getImageRegistry(); } }