/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.log;
import java.util.HashMap;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.jboss.tools.common.Messages;
import org.jboss.tools.foundation.core.plugin.log.IPluginLog;
import org.jboss.tools.foundation.core.plugin.log.PluginLog;
/**
* Provides an easy way to log status of events.
*
* NOTE: It is useful to make the static method getPluginLog() which provides
* the interface IPluginLog for using it in your code in future
*
* @author Sergey Vasilyev
*/
public class BaseUIPlugin extends AbstractUIPlugin implements
org.jboss.tools.common.log.IPluginLog {
private IPluginLog pluginLog = null;
protected IPluginLog getPluginLogInternal() {
if( pluginLog == null )
pluginLog = new PluginLog(this);
return pluginLog;
}
// A Map to save a descriptor for each image
private HashMap<String, ImageDescriptor> fImageDescRegistry = null;
public void logError(String message, Throwable t) {
LogHelper.logError(this, message, t);
}
public void logError(String message) {
LogHelper.logError(this, message);
}
public void logError(Throwable t) {
LogHelper.logError(this, t);
}
public void logInfo(String message, Throwable t) {
LogHelper.logInfo(this, message, t);
}
public void logInfo(String message) {
LogHelper.logInfo(this, message);
}
public void logWarning(String message, Throwable t) {
LogHelper.logWarning(this, message, t);
}
public void logWarning(String message) {
LogHelper.logWarning(this, message);
}
public void logWarning(Throwable t) {
LogHelper.logWarning(this, t);
}
public void logMessage(int code, String message, Throwable t) {
getPluginLogInternal().logMessage(code, message, t);
}
public void logStatus(IStatus s) {
getPluginLogInternal().logStatus(s);
}
public void showError(String message, Throwable t) {
logError(message, t);
Shell shell = Display.getDefault().getActiveShell();
IStatus s = StatusFactory.getInstance(IStatus.ERROR, this.getBundle()
.getSymbolicName(), message, t);
ErrorDialog.openError(shell, Messages.BaseUIPlugin_ErrorDialogTitle,
message, s);
}
/**
* Retrieves the image associated with resource from the image registry. If
* the image cannot be retrieved, attempt to find and load the image at the
* location specified in resource.
*
* @param resource
* the image to retrieve
* @return Image the image associated with resource or null if one could not
* be found
*/
public Image getImage(String resource) {
Image image = getImageRegistry().get(resource);
if (image == null) {
// create an image
image = createImage(resource);
}
return image;
}
/**
* Creates an image from the given resource and adds the image to the image
* registry.
*
* @param resource
* @return Image
*/
private Image createImage(String resource) {
ImageDescriptor desc = getImageDescriptorFromRegistry(resource);
Image image = null;
if (desc != null) {
image = desc.createImage();
// dont add the missing image descriptor image to the image
// registry
if (!desc.equals(ImageDescriptor.getMissingImageDescriptor())) {
getImageRegistry().put(resource, image);
}
}
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 getImageDescriptorFromRegistry(String resource) {
ImageDescriptor imageDescriptor = null;
ImageDescriptor o = getImageDescriptorRegistry().get(resource);
if (o == null) {
// create a descriptor
imageDescriptor = createImageDescriptor(resource);
} else {
imageDescriptor = o;
}
return imageDescriptor;
}
/**
* Returns the image descriptor registry for this plugin.
*
* @return HashMap - image descriptor registry for this plugin
*/
private HashMap<String, ImageDescriptor> getImageDescriptorRegistry() {
if (fImageDescRegistry == null) {
fImageDescRegistry = new HashMap<String, ImageDescriptor>();
}
return fImageDescRegistry;
}
/**
* 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(getBundle().getSymbolicName(), imageFilePath); //$NON-NLS-1$
if (imageDescriptor != null) {
getImageDescriptorRegistry().put(imageFilePath, imageDescriptor);
} else {
imageDescriptor = ImageDescriptor.getMissingImageDescriptor();
}
return imageDescriptor;
}
}