| package org.eclipse.ui.examples.presentation; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.MissingResourceException; |
| import java.util.ResourceBundle; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.resource.ImageRegistry; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.ui.plugin.AbstractUIPlugin; |
| import org.osgi.framework.BundleContext; |
| |
| /** |
| * The main plugin class to be used in the desktop. |
| */ |
| public class PresentationPlugin extends AbstractUIPlugin { |
| //The shared instance. |
| private static PresentationPlugin plugin; |
| //Resource bundle. |
| private ResourceBundle resourceBundle; |
| |
| /** |
| * The constructor. |
| */ |
| public PresentationPlugin() { |
| super(); |
| plugin = this; |
| try { |
| resourceBundle = ResourceBundle.getBundle("org.eclipse.ui.examples.presentation.PresentationPluginResources"); //$NON-NLS-1$ |
| } catch (MissingResourceException x) { |
| resourceBundle = null; |
| } |
| } |
| |
| /** |
| * Returns the given image. The image will be managed by the plugin's |
| * image registry. |
| * |
| * @param imageName a pathname relative to the icons directory of |
| * this project. |
| */ |
| public Image getImage(String imageName) { |
| ImageRegistry reg = getImageRegistry(); |
| |
| Image result = reg.get(imageName); |
| |
| if (result != null) { |
| return result; |
| } |
| |
| result = getImageDescriptor(imageName).createImage(); |
| |
| reg.put(imageName, result); |
| |
| return result; |
| } |
| |
| /** |
| * Returns the given image descriptor. The caller will be responsible |
| * for deallocating the image if it creates the image from the descriptor |
| * |
| * @param imageName is a pathname relative to the icons directory |
| * within this project. |
| */ |
| public ImageDescriptor getImageDescriptor(String imageName) { |
| ImageDescriptor desc; |
| try { |
| desc = |
| ImageDescriptor.createFromURL( |
| new URL( |
| plugin.getBundle().getEntry("/"), //$NON-NLS-1$ |
| "icons/" + imageName)); //$NON-NLS-1$ |
| } catch (MalformedURLException e) { |
| desc = ImageDescriptor.getMissingImageDescriptor(); |
| } |
| |
| return desc; |
| } |
| |
| /** |
| * This method is called upon plug-in activation |
| */ |
| public void start(BundleContext context) throws Exception { |
| super.start(context); |
| } |
| |
| /** |
| * This method is called when the plug-in is stopped |
| */ |
| public void stop(BundleContext context) throws Exception { |
| super.stop(context); |
| } |
| |
| /** |
| * Returns the shared instance. |
| */ |
| public static PresentationPlugin getDefault() { |
| return plugin; |
| } |
| |
| /** |
| * Returns the string from the plugin's resource bundle, |
| * or 'key' if not found. |
| */ |
| public static String getResourceString(String key) { |
| ResourceBundle bundle = PresentationPlugin.getDefault().getResourceBundle(); |
| try { |
| return (bundle != null) ? bundle.getString(key) : key; |
| } catch (MissingResourceException e) { |
| return key; |
| } |
| } |
| |
| /** |
| * Returns the plugin's resource bundle, |
| */ |
| public ResourceBundle getResourceBundle() { |
| return resourceBundle; |
| } |
| } |