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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();
}
}
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