plugins/org.eclipse.bpel.common.ui.noEmbeddedEditors/src/org/eclipse/bpel/common/ui/CommonUIPlugin.java - bpel/org.eclipse.bpel - Git at Google

 /*******************************************************************************
  * Copyright (c) 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.bpel.common.ui;

 import java.lang.reflect.Field;
 import java.net.MalformedURLException;
 import java.net.URL;

 import org.eclipse.bpel.common.ui.details.IDetailsColors;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IConfigurationElement;
 import org.eclipse.core.runtime.IExtensionPoint;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.jface.resource.ColorRegistry;
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.resource.ImageRegistry;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.graphics.ImageData;
 import org.eclipse.swt.graphics.RGB;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.ui.plugin.AbstractUIPlugin;
 import org.osgi.framework.BundleContext;

 /**
  * The main plug-in class to be used in the desktop.
  */

 @SuppressWarnings("nls")

 public class CommonUIPlugin extends AbstractUIPlugin {

 	/** Our plug-in id */
 	public static final String PLUGIN_ID = "org.eclipse.bpel.common.ui"; //$NON-NLS-1$

 	//The shared instance.
 	private static CommonUIPlugin plugin;

 	private ColorRegistry colorRegistry;
 	// https://bugs.eclipse.org/bugs/show_bug.cgi?id=330813
 	private ImageRegistry imageRegistry;

 	/**
 	 * The constructor.
 	 */
 	public CommonUIPlugin() {
 		// nothing
 	}

 	/**
 	 * This method is called upon plug-in activation
 	 */
 	@Override
 	public void start(BundleContext context) throws Exception {
 		super.start(context);
 		plugin = this;
 	}

 	/**
 	 * This method is called when the plug-in is stopped
 	 */
 	@Override
 	public void stop(BundleContext context) throws Exception {
 		super.stop(context);
 		plugin = null;
 	}

 	/**
 	 * Returns the shared instance.
 	 * @return the plugin singleton
 	 */
 	public static CommonUIPlugin getDefault() {
 		return plugin;
 	}

 	/**
 	 * Returns an image descriptor for the image file at the given
 	 * plug-in relative path.
 	 *
 	 * @param path the path
 	 * @return the image descriptor
 	 */

 	public static ImageDescriptor getImageDescriptor(String path) {
 		return AbstractUIPlugin.imageDescriptorFromPlugin("org.eclipse.bpel.common.ui", path);
 	}

 	/**
 	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#getImageRegistry()
 	 */
 	@Override
 	public synchronized ImageRegistry getImageRegistry() {
 		if (imageRegistry == null) {
 			imageRegistry = super.getImageRegistry();
 			initializeImages(Display.getCurrent());
 		}
 		return imageRegistry;
 	}

 	/**
 	 * Return color registry.
 	 * @return the color registry.
 	 */
 	public synchronized ColorRegistry getColorRegistry() {
 		if (colorRegistry == null) {
 			colorRegistry = new ColorRegistry();
 			registerColors(Display.getCurrent());
 		}
 		return colorRegistry;
 	}

 	/**
 	 * Creates an image and places it in the image registry.
 	 */
 	private void createImageDescriptor(String id, URL baseURL) {
 		URL url = null;
 		try {
 			url = new URL(baseURL, ICommonUIConstants.ICON_PATH + id);
 		} catch (MalformedURLException e) {
 		}
 		ImageDescriptor desc = ImageDescriptor.createFromURL(url);
 		getImageRegistry().put(id, desc);
 	}

 	/**
 	 * Initializes the table of images used in this plugin.
 	 */
 	private void initializeImages (Display display) {
 		URL baseURL = getBundle().getEntry("/"); //$NON-NLS-1$

 		// A little reflection magic ... so that we don't
 		// have to add the createImageDescriptor every time
 		// we add it to the IBPELUIConstants ..
 		Field fields[] = ICommonUIConstants.class.getFields();
 		for(int i=0; i < fields.length; i++) {
 			Field f = fields[i];
 			if (f.getType() != String.class) {
 				continue;
 			}
 			String name = f.getName();
 			if (name.startsWith("ICON_") || name.startsWith("CURSOR_")) {   //$NON-NLS-1$ //$NON-NLS-2$
 				try {
 					String value = (String) f.get(null);
 					createImageDescriptor(value, baseURL);
 				} catch (Exception e) {
 					log(e);
 				}
 			}
 		}

 		//	tray buttons
 		ImageRegistry registry = getImageRegistry();
 		ImageDescriptor desc = registry.getDescriptor(ICommonUIConstants.ICON_TRAY_EXPAND_ARROW);

 		registry.remove(ICommonUIConstants.ICON_KEY_TRAY_COLLAPSE_BUTTON );
 		registry.remove(ICommonUIConstants.ICON_KEY_TRAY_EXPAND_BUTTON );

 		registry.put(ICommonUIConstants.ICON_KEY_TRAY_COLLAPSE_BUTTON, desc.createImage());
 		ImageData data = ImageUtils.flip(desc.getImageData());
 		registry.put(ICommonUIConstants.ICON_KEY_TRAY_EXPAND_BUTTON, new Image(display, data));
 	}

 	/**
 	 * Register the colors used by the details editor and its parts.
 	 */
 	private void registerColors(Display display) {
 		RGB light = display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND).getRGB();
 		RGB dark = ColorUtils.getShadeRGB(light, -0.09019605f);
 		RGB shadow = ColorUtils.getShadeRGB(light, -0.20f);
 		RGB scrollBtn = ColorUtils.getShadeRGB(light, -0.1921568f);

 		ColorRegistry registry = getColorRegistry();
 		registry.put(IDetailsColors.COLOR_LIGHT_BACKGROUND, light);
 		registry.put(IDetailsColors.COLOR_DARK_BACKGROUND, dark);
 		registry.put(IDetailsColors.COLOR_DARK_SHADOW, shadow);
 		registry.put(IDetailsColors.COLOR_TOOL_SELECTED_1, light);
 		registry.put(IDetailsColors.COLOR_TOOL_SELECTED_2, dark);
 		registry.put(IDetailsColors.COLOR_SCROLL_BUTTON, scrollBtn);
 		registry.put(IDetailsColors.COLOR_TOOL_SELECTED_BORDER, display.getSystemColor(SWT.COLOR_LIST_BACKGROUND).getRGB());
 		RGB canvas = display.getSystemColor(SWT.COLOR_LIST_BACKGROUND).getRGB();
 		registry.put(IDetailsColors.COLOR_CANVAS, canvas);
 		registry.put(IDetailsColors.COLOR_TEXT, display.getSystemColor(SWT.COLOR_LIST_FOREGROUND).getRGB());

 		// tray
 		registry.put(IDetailsColors.COLOR_TRAY_BACKGROUND, ColorUtils.getLightShade(light, 2, 3));

 		// selection handler
 		Color selectionColor = Display.getCurrent().getSystemColor(SWT.COLOR_LIST_SELECTION);
 		colorRegistry.put(ICommonUIConstants.COLOR_SELECTION_HANDLE_CORNER, ColorUtils.getLightShade(selectionColor.getRGB(), 2, 3));
 	}

 	/**
 	 * Method to create an error status object and write an error message to the log
 	 * based on the passed boolean value.
 	 * Return the IStatus that is created.
 	 *
 	 * @param message message that describes the error
 	 * @param e Exception
 	 * @param writeToLog boolean, whether or not to write the exception and message to the log
 	 * @return IStatus
 	 */
 	public IStatus createErrorStatus(String message, Exception e, boolean writeToLog){
 		IStatus status = new Status(
 			IStatus.ERROR,
 			CommonUIPlugin.PLUGIN_ID,
 			0,
 			message,
 			e);

 		if (writeToLog)
 			CommonUIPlugin.plugin.getLog().log(status);
 		return status;
 	}

 	/**
 	 * Utility methods for logging exceptions.
 	 * @param e exception
 	 * @param severity severity
 	 */
 	public static void log(Exception e, int severity) {
 		IStatus status = null;
 		if (e instanceof CoreException) {
 			status = ((CoreException)e).getStatus();
 		} else {
 			String m = e.getMessage();
 			status = new Status(severity, PLUGIN_ID, 0, m==null? "<no message>" : m, e);
 		}
 		System.out.println(e.getClass().getName()+": "+status);
 		CommonUIPlugin.getDefault().getLog().log(status);
 	}

 	/**
 	 * Log an exception.
 	 *
 	 * @param e
 	 */

 	public static void log(Exception e) {
 		log(e, IStatus.ERROR);
 	}


 	/**
 	 * The configuration elements for our extension points
 	 *
 	 * @param extensionPointId our extension points
 	 *
 	 * @return the configuration elements.
 	 *
 	 */

 	public static IConfigurationElement[] getConfigurationElements (String extensionPointId) {

 		IExtensionPoint extensionPoint = Platform.getExtensionRegistry().getExtensionPoint(PLUGIN_ID, extensionPointId);
 		if (extensionPoint == null) {
 			return new IConfigurationElement[0];
 		}
 		return extensionPoint.getConfigurationElements();
 	}

 }
	/*******************************************************************************
	* Copyright (c) 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.bpel.common.ui;

	import java.lang.reflect.Field;
	import java.net.MalformedURLException;
	import java.net.URL;

	import org.eclipse.bpel.common.ui.details.IDetailsColors;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IConfigurationElement;
	import org.eclipse.core.runtime.IExtensionPoint;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.jface.resource.ColorRegistry;
	import org.eclipse.jface.resource.ImageDescriptor;
	import org.eclipse.jface.resource.ImageRegistry;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.graphics.Color;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.graphics.ImageData;
	import org.eclipse.swt.graphics.RGB;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.ui.plugin.AbstractUIPlugin;
	import org.osgi.framework.BundleContext;

	/**
	* The main plug-in class to be used in the desktop.
	*/

	@SuppressWarnings("nls")

	public class CommonUIPlugin extends AbstractUIPlugin {

	/** Our plug-in id */
	public static final String PLUGIN_ID = "org.eclipse.bpel.common.ui"; //$NON-NLS-1$

	//The shared instance.
	private static CommonUIPlugin plugin;

	private ColorRegistry colorRegistry;
	// https://bugs.eclipse.org/bugs/show_bug.cgi?id=330813
	private ImageRegistry imageRegistry;

	/**
	* The constructor.
	*/
	public CommonUIPlugin() {
	// nothing
	}

	/**
	* This method is called upon plug-in activation
	*/
	@Override
	public void start(BundleContext context) throws Exception {
	super.start(context);
	plugin = this;
	}

	/**
	* This method is called when the plug-in is stopped
	*/
	@Override
	public void stop(BundleContext context) throws Exception {
	super.stop(context);
	plugin = null;
	}

	/**
	* Returns the shared instance.
	* @return the plugin singleton
	*/
	public static CommonUIPlugin getDefault() {
	return plugin;
	}

	/**
	* Returns an image descriptor for the image file at the given
	* plug-in relative path.
	*
	* @param path the path
	* @return the image descriptor
	*/

	public static ImageDescriptor getImageDescriptor(String path) {
	return AbstractUIPlugin.imageDescriptorFromPlugin("org.eclipse.bpel.common.ui", path);
	}

	/**
	* @see org.eclipse.ui.plugin.AbstractUIPlugin#getImageRegistry()
	*/
	@Override
	public synchronized ImageRegistry getImageRegistry() {
	if (imageRegistry == null) {
	imageRegistry = super.getImageRegistry();
	initializeImages(Display.getCurrent());
	}
	return imageRegistry;
	}

	/**
	* Return color registry.
	* @return the color registry.
	*/
	public synchronized ColorRegistry getColorRegistry() {
	if (colorRegistry == null) {
	colorRegistry = new ColorRegistry();
	registerColors(Display.getCurrent());
	}
	return colorRegistry;
	}

	/**
	* Creates an image and places it in the image registry.
	*/
	private void createImageDescriptor(String id, URL baseURL) {
	URL url = null;
	try {
	url = new URL(baseURL, ICommonUIConstants.ICON_PATH + id);
	} catch (MalformedURLException e) {
	}
	ImageDescriptor desc = ImageDescriptor.createFromURL(url);
	getImageRegistry().put(id, desc);
	}

	/**
	* Initializes the table of images used in this plugin.
	*/
	private void initializeImages (Display display) {
	URL baseURL = getBundle().getEntry("/"); //$NON-NLS-1$

	// A little reflection magic ... so that we don't
	// have to add the createImageDescriptor every time
	// we add it to the IBPELUIConstants ..
	Field fields[] = ICommonUIConstants.class.getFields();
	for(int i=0; i < fields.length; i++) {
	Field f = fields[i];
	if (f.getType() != String.class) {
	continue;
	}
	String name = f.getName();
	if (name.startsWith("ICON_") \|\| name.startsWith("CURSOR_")) { //$NON-NLS-1$ //$NON-NLS-2$
	try {
	String value = (String) f.get(null);
	createImageDescriptor(value, baseURL);
	} catch (Exception e) {
	log(e);
	}
	}
	}

	// tray buttons
	ImageRegistry registry = getImageRegistry();
	ImageDescriptor desc = registry.getDescriptor(ICommonUIConstants.ICON_TRAY_EXPAND_ARROW);

	registry.remove(ICommonUIConstants.ICON_KEY_TRAY_COLLAPSE_BUTTON );
	registry.remove(ICommonUIConstants.ICON_KEY_TRAY_EXPAND_BUTTON );

	registry.put(ICommonUIConstants.ICON_KEY_TRAY_COLLAPSE_BUTTON, desc.createImage());
	ImageData data = ImageUtils.flip(desc.getImageData());
	registry.put(ICommonUIConstants.ICON_KEY_TRAY_EXPAND_BUTTON, new Image(display, data));
	}

	/**
	* Register the colors used by the details editor and its parts.
	*/
	private void registerColors(Display display) {
	RGB light = display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND).getRGB();
	RGB dark = ColorUtils.getShadeRGB(light, -0.09019605f);
	RGB shadow = ColorUtils.getShadeRGB(light, -0.20f);
	RGB scrollBtn = ColorUtils.getShadeRGB(light, -0.1921568f);

	ColorRegistry registry = getColorRegistry();
	registry.put(IDetailsColors.COLOR_LIGHT_BACKGROUND, light);
	registry.put(IDetailsColors.COLOR_DARK_BACKGROUND, dark);
	registry.put(IDetailsColors.COLOR_DARK_SHADOW, shadow);
	registry.put(IDetailsColors.COLOR_TOOL_SELECTED_1, light);
	registry.put(IDetailsColors.COLOR_TOOL_SELECTED_2, dark);
	registry.put(IDetailsColors.COLOR_SCROLL_BUTTON, scrollBtn);
	registry.put(IDetailsColors.COLOR_TOOL_SELECTED_BORDER, display.getSystemColor(SWT.COLOR_LIST_BACKGROUND).getRGB());
	RGB canvas = display.getSystemColor(SWT.COLOR_LIST_BACKGROUND).getRGB();
	registry.put(IDetailsColors.COLOR_CANVAS, canvas);
	registry.put(IDetailsColors.COLOR_TEXT, display.getSystemColor(SWT.COLOR_LIST_FOREGROUND).getRGB());

	// tray
	registry.put(IDetailsColors.COLOR_TRAY_BACKGROUND, ColorUtils.getLightShade(light, 2, 3));

	// selection handler
	Color selectionColor = Display.getCurrent().getSystemColor(SWT.COLOR_LIST_SELECTION);
	colorRegistry.put(ICommonUIConstants.COLOR_SELECTION_HANDLE_CORNER, ColorUtils.getLightShade(selectionColor.getRGB(), 2, 3));
	}

	/**
	* Method to create an error status object and write an error message to the log
	* based on the passed boolean value.
	* Return the IStatus that is created.
	*
	* @param message message that describes the error
	* @param e Exception
	* @param writeToLog boolean, whether or not to write the exception and message to the log
	* @return IStatus
	*/
	public IStatus createErrorStatus(String message, Exception e, boolean writeToLog){
	IStatus status = new Status(
	IStatus.ERROR,
	CommonUIPlugin.PLUGIN_ID,
	0,
	message,
	e);

	if (writeToLog)
	CommonUIPlugin.plugin.getLog().log(status);
	return status;
	}

	/**
	* Utility methods for logging exceptions.
	* @param e exception
	* @param severity severity
	*/
	public static void log(Exception e, int severity) {
	IStatus status = null;
	if (e instanceof CoreException) {
	status = ((CoreException)e).getStatus();
	} else {
	String m = e.getMessage();
	status = new Status(severity, PLUGIN_ID, 0, m==null? "<no message>" : m, e);
	}
	System.out.println(e.getClass().getName()+": "+status);
	CommonUIPlugin.getDefault().getLog().log(status);
	}

	/**
	* Log an exception.
	*
	* @param e
	*/

	public static void log(Exception e) {
	log(e, IStatus.ERROR);
	}


	/**
	* The configuration elements for our extension points
	*
	* @param extensionPointId our extension points
	*
	* @return the configuration elements.
	*
	*/

	public static IConfigurationElement[] getConfigurationElements (String extensionPointId) {

	IExtensionPoint extensionPoint = Platform.getExtensionRegistry().getExtensionPoint(PLUGIN_ID, extensionPointId);
	if (extensionPoint == null) {
	return new IConfigurationElement[0];
	}
	return extensionPoint.getConfigurationElements();
	}

	}