bundles/org.eclipse.rap.ui.workbench/Eclipse UI/org/eclipse/rap/ui/internal/servlet/WorkbenchApplicationConfiguration.java - rap/org.eclipse.rap - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006, 2019 EclipseSource 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:
  *    Innoopract Informationssysteme GmbH - initial API and implementation
  *    EclipseSource - ongoing development
  *    Frank Appel - replaced singletons and static fields (Bug 337787)
  ******************************************************************************/
 package org.eclipse.rap.ui.internal.servlet;

 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
 import java.text.MessageFormat;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.FileLocator;
 import org.eclipse.core.runtime.IConfigurationElement;
 import org.eclipse.core.runtime.IExtension;
 import org.eclipse.core.runtime.IExtensionPoint;
 import org.eclipse.core.runtime.IExtensionRegistry;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.equinox.app.IApplication;
 import org.eclipse.rap.rwt.application.Application;
 import org.eclipse.rap.rwt.application.Application.OperationMode;
 import org.eclipse.rap.rwt.application.ApplicationConfiguration;
 import org.eclipse.rap.rwt.application.EntryPoint;
 import org.eclipse.rap.rwt.application.EntryPointFactory;
 import org.eclipse.rap.rwt.client.WebClient;
 import org.eclipse.rap.rwt.internal.lifecycle.DefaultEntryPointFactory;
 import org.eclipse.rap.rwt.service.ResourceLoader;
 import org.eclipse.rap.rwt.service.ServiceHandler;
 import org.eclipse.rap.rwt.service.SettingStoreFactory;
 import org.eclipse.rap.ui.internal.application.EntryPointApplicationWrapper;
 import org.eclipse.rap.ui.internal.branding.AbstractBranding;
 import org.eclipse.rap.ui.internal.branding.BrandingExtension;
 import org.eclipse.rap.ui.internal.branding.BrandingManager;
 import org.eclipse.rap.ui.internal.branding.BrandingUtil;
 import org.eclipse.rap.ui.internal.preferences.WorkbenchFileSettingStoreFactory;
 import org.eclipse.rap.ui.resources.IResource;
 import org.eclipse.swt.widgets.Widget;
 import org.eclipse.ui.internal.WorkbenchPlugin;
 import org.osgi.framework.Bundle;
 import org.osgi.framework.BundleContext;
 import org.osgi.framework.Constants;
 import org.osgi.framework.FrameworkUtil;
 import org.osgi.framework.ServiceReference;
 import org.osgi.service.http.HttpService;


 public class WorkbenchApplicationConfiguration implements ApplicationConfiguration {

   private static final String ID_ENTRY_POINT = "org.eclipse.rap.ui.entrypoint";
   private static final String ID_THEMES = "org.eclipse.rap.ui.themes";
   private static final String ELEMENT_THEME = "theme";
   private static final String ELEMENT_THEME_CONTRIBUTION = "themeContribution";
   private static final String ID_THEMEABLE_WIDGETS = "org.eclipse.rap.ui.themeableWidgets";
   private static final String ID_SERVICE_HANDLER = "org.eclipse.rap.ui.serviceHandler";
   private static final String ID_SETTING_STORES = "org.eclipse.rap.ui.settingstores";

   private static final String PROP_SETTING_STORES_FACTORY
     = "org.eclipse.rap.rwt.settingStoreFactory";

   private static final String RUN = "run"; //$NON-NLS-1$
   private static final String PI_RUNTIME = "org.eclipse.core.runtime"; //$NON-NLS-1$
   private static final String PT_APPLICATIONS = "applications"; //$NON-NLS-1$
   private static final String PT_APP_VISIBLE = "visible"; //$NON-NLS-1$

   private final ServiceReference<HttpService> httpServiceReference;

   // Default constructor to enable subclassing without adding a dependency to OSGi API
   public WorkbenchApplicationConfiguration() {
     httpServiceReference = null;
   }

   /*
    * Note [rst]: public as per request in https://bugs.eclipse.org/bugs/show_bug.cgi?id=372183
    */
   public WorkbenchApplicationConfiguration( ServiceReference<HttpService> httpServiceReference ) {
     this.httpServiceReference = httpServiceReference;
   }

   @Override
   public void configure( Application application ) {
     application.setOperationMode( OperationMode.SWT_COMPATIBILITY );
     registerSettingStoreFactory( application );
     registerThemeableWidgets( application );
     registerThemes( application );
     registerThemeContributions( application );
     registerResources( application );
     registerServiceHandlers( application );
     registerBrandings( application ); // [rh] brandings must be red before apps/entry points
     registerEntryPoints( application );
   }

   private void registerSettingStoreFactory( Application application ) {
     // determine which factory to use via an environment setting / config.ini
     SettingStoreFactory result = null;
     String factoryId = getOSGiProperty( PROP_SETTING_STORES_FACTORY );
     if( factoryId != null ) {
       result = loadSettingStoreFactory( factoryId );
     }
     if( result == null ) {
       result = new WorkbenchFileSettingStoreFactory(); // default
     }
     application.setSettingStoreFactory( result );
   }

   private SettingStoreFactory loadSettingStoreFactory( String factoryId ) {
     SettingStoreFactory result = null;
     IExtensionRegistry registry = Platform.getExtensionRegistry();
     IExtensionPoint point = registry.getExtensionPoint( ID_SETTING_STORES );
     IConfigurationElement[] elements = point.getConfigurationElements();
     for( int i = 0; i < elements.length; i++ ) {
       String id = elements[ i ].getAttribute( "id" );
       if( factoryId.equals( id ) ) {
         result = loadSettingStoreFactory( elements[ i ] );
       }
     }
     if( result == null ) {
       String msg = "Unable to find setting store factory with id '" + factoryId + "'.";
       WorkbenchPlugin.log( msg );
     }
     return result;
   }

   private SettingStoreFactory loadSettingStoreFactory( IConfigurationElement element ) {
     SettingStoreFactory result = null;
     try {
       result = ( SettingStoreFactory )element.createExecutableExtension( "class" );
     } catch( CoreException cex ) {
       WorkbenchPlugin.log( cex.getStatus() );
     }
     return result;
   }

   private static String getOSGiProperty( String name ) {
     Bundle bundle = FrameworkUtil.getBundle( WorkbenchApplicationConfiguration.class );
     BundleContext bundleContext = bundle.getBundleContext();
     Bundle systemBundle = bundleContext.getBundle( Constants.SYSTEM_BUNDLE_ID );
     return systemBundle.getBundleContext().getProperty( name );
   }

   @SuppressWarnings( "unchecked" )
   private void registerEntryPoints( Application application ) {
     for( IConfigurationElement element : getEntryPointExtensions() ) {
       String id = element.getAttribute( "id" );
       String path = element.getAttribute( "path" );
       String className = element.getAttribute( "class" );
       String applicationId = element.getAttribute( "applicationId" );
       String brandingId = element.getAttribute( "brandingId" );
       try {
         EntryPointFactory entryPointFactory;
         if( className != null ) {
           Class<? extends EntryPoint> entryPointClass = loadClass( className, element );
           entryPointFactory = new DefaultEntryPointFactory( entryPointClass );
         } else if( applicationId != null ) {
           entryPointFactory = createEntryPointFactoryForApplication( applicationId );
         } else {
           throw new IllegalArgumentException( "Neither class nor applicationId specified" );
         }
         Map<String, String> properties = getBrandingProperties( brandingId );
         application.addEntryPoint( path, entryPointFactory, properties );
       } catch( final Throwable thr ) {
         String text = "Could not register entry point ''{0}'' with id ''{1}''.";
         Object[] param = new Object[] { className, id };
         logProblem( text, param, thr, element.getContributor().getName() );
       }
     }
   }

   @SuppressWarnings( "unchecked" )
   private EntryPointFactory createEntryPointFactoryForApplication( String applicationId )
     throws ClassNotFoundException
   {
     IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry();
     String extensionPointId = PI_RUNTIME + '.' + PT_APPLICATIONS;
     IExtension extension = extensionRegistry.getExtension( extensionPointId, applicationId );
     if( extension == null ) {
       String message = "Application extension not found by id: " + applicationId;
       throw new IllegalArgumentException( message );
     }
     IConfigurationElement configElement = extension.getConfigurationElements()[ 0 ];
     String isVisible = configElement.getAttribute( PT_APP_VISIBLE );
     if( isVisible != null && !Boolean.valueOf( isVisible ).booleanValue() ) {
       throw new IllegalArgumentException( "Application is not visible:" + applicationId );
     }
     IConfigurationElement[] runElement = configElement.getChildren( RUN );
     String className = runElement[ 0 ].getAttribute( "class" ); //$NON-NLS-1$
     Class<? extends IApplication> applicationClass = loadClass( className, configElement );
     return createApplicationEntryPointFactory( applicationClass );
   }

   private static EntryPointFactory
     createApplicationEntryPointFactory( final Class<? extends IApplication> applicationClass )
   {
     return new EntryPointFactory() {
       @Override
       public EntryPoint create() {
         return new EntryPointApplicationWrapper( applicationClass );
       }
     };
   }

   @SuppressWarnings( "unchecked" )
   private void registerThemeableWidgets( Application application ) {
     IExtensionRegistry registry = Platform.getExtensionRegistry();
     IExtensionPoint ep = registry.getExtensionPoint( ID_THEMEABLE_WIDGETS );
     IConfigurationElement[] widgetExts = ep.getConfigurationElements();
     for( int i = 0; i < widgetExts.length; i++ ) {
       String contributorName = widgetExts[ i ].getContributor().getName();
       String widgetClass = widgetExts[ i ].getAttribute( "class" );
       try {
         final Bundle bundle = Platform.getBundle( contributorName );
         Class<? extends Widget> widget = (Class<? extends Widget>)bundle.loadClass( widgetClass );
         application.addThemeableWidget( widget );
       } catch( final Throwable thr ) {
         String text = "Could not register themeable widget ''{0}''.";
         Object[] param = new Object[] { widgetClass };
         logProblem( text, param, thr, contributorName );
       }
     }
   }

   private void registerThemes( Application application ) {
     IExtensionRegistry registry = Platform.getExtensionRegistry();
     IExtensionPoint ep = registry.getExtensionPoint( ID_THEMES );
     IConfigurationElement[] elements = ep.getConfigurationElements();
     for( int i = 0; i < elements.length; i++ ) {
       if( ELEMENT_THEME.equals( elements[ i ].getName() ) ) {
         String contributorName = elements[ i ].getContributor().getName();
         String themeId = elements[ i ].getAttribute( "id" );
         String themeFile = elements[ i ].getAttribute( "file" );
         try {
           Bundle bundle = Platform.getBundle( contributorName );
           ResourceLoader resourceLoader = createThemeResourceLoader( bundle );
           application.addStyleSheet( themeId, themeFile, resourceLoader );
         } catch( final Exception e ) {
           String text = "Could not register custom theme ''{0}'' from file ''{1}''.";
           Object[] param = new Object[] { themeId, themeFile };
           logProblem( text, param, e, contributorName );
         }
       }
     }
   }

   private void registerThemeContributions( Application application ) {
     IExtensionRegistry registry = Platform.getExtensionRegistry();
     IExtensionPoint ep = registry.getExtensionPoint( ID_THEMES );
     IConfigurationElement[] elements = ep.getConfigurationElements();
     for( int i = 0; i < elements.length; i++ ) {
       if( ELEMENT_THEME_CONTRIBUTION.equals( elements[ i ].getName() ) ) {
         String contributorName = elements[ i ].getContributor().getName();
         String themeId = elements[ i ].getAttribute( "themeId" );
         String themeFile = elements[ i ].getAttribute( "file" );
         try {
           Bundle bundle = Platform.getBundle( contributorName );
           ResourceLoader loader = createThemeResourceLoader( bundle );
           application.addStyleSheet( themeId, themeFile, loader );
         } catch( final Exception e ) {
           String text = "Could not register contribution for theme ''{0}'' from file ''{1}''.";
           Object[] param = new Object[] { themeId, themeFile };
           logProblem( text, param, e, contributorName );
         }
       }
     }
   }

   private static void registerResources( Application application ) {
     List<IResource> resources = ResourceReader.readResources();
     new ResourceRegisterer( application ).registerResources( resources );
   }

   private static ResourceLoader createThemeResourceLoader( final Bundle bundle ) {
     ResourceLoader result = new ResourceLoader() {
       @Override
       public InputStream getResourceAsStream( final String resourceName ) throws IOException {
         InputStream result = null;
         IPath path = new Path( resourceName );
         URL url = FileLocator.find( bundle, path, null );
         if( url != null ) {
           result = url.openStream();
         }
         return result;
       }
     };
     return result;
   }

   private void registerServiceHandlers( Application application ) {
     IExtensionRegistry registry = Platform.getExtensionRegistry();
     IExtensionPoint point = registry.getExtensionPoint( ID_SERVICE_HANDLER );
     IConfigurationElement[] elements = point.getConfigurationElements();
     for( int i = 0; i < elements.length; i++ ) {
       try {
         String id = elements[ i ].getAttribute( "id" );
         if( id != null ) {
           Object extObject = elements[ i ].createExecutableExtension( "class" );
           ServiceHandler handler = ( ServiceHandler )extObject;
           application.addServiceHandler( id, handler );
         }
       } catch( final CoreException ce ) {
         WorkbenchPlugin.getDefault().getLog().log( ce.getStatus() );
       }
     }
   }

   private void registerBrandings( Application application ) {
     try {
       new BrandingExtension( application, httpServiceReference ).read();
     } catch( final IOException ioe ) {
       throw new RuntimeException( "Unable to read branding extension", ioe );
     }
   }

   private static AbstractBranding findBrandingById( String id ) {
     AbstractBranding result = null;
     AbstractBranding[] brandings = BrandingManager.getInstance().getAll();
     for( AbstractBranding branding : brandings ) {
       if( branding.getId() != null && branding.getId().equals( id ) ) {
         result = branding;
       }
     }
     return result;
   }

   private Map<String, String> getBrandingProperties( String brandingId ) {
     AbstractBranding branding = findBrandingById( brandingId );
     Map<String, String> result = new HashMap<String, String>();
     result.put( BrandingUtil.ENTRY_POINT_BRANDING, brandingId );
     if( branding != null ) {
       result.put( WebClient.THEME_ID, branding.getThemeId() );
       result.put( WebClient.BODY_HTML, branding.getBody() );
       result.put( WebClient.PAGE_TITLE, branding.getTitle() );
       result.put( WebClient.FAVICON, branding.getFavIcon() );
       result.put( WebClient.HEAD_HTML, BrandingUtil.headerMarkup( branding ) );
     }
     return result;
   }

   private static IConfigurationElement[] getEntryPointExtensions() {
     IExtensionRegistry registry = Platform.getExtensionRegistry();
     IExtensionPoint extensionPoint = registry.getExtensionPoint( ID_ENTRY_POINT );
     IConfigurationElement[] elements = extensionPoint.getConfigurationElements();
     return elements;
   }

   private static void logProblem( String text,
                                   Object[] textParams,
                                   Throwable problem,
                                   String bundleId )
   {
     String msg = MessageFormat.format( text, textParams );
     Status status = new Status( IStatus.ERROR, bundleId, IStatus.OK, msg, problem );
     WorkbenchPlugin.getDefault().getLog().log( status );
   }

   private static <T> T loadClass( String className, IConfigurationElement element )
     throws ClassNotFoundException
   {
     Bundle bundle = Platform.getBundle( element.getContributor().getName() );
     return ( T )bundle.loadClass( className );
   }

 }
	/*******************************************************************************
	* Copyright (c) 2006, 2019 EclipseSource 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:
	* Innoopract Informationssysteme GmbH - initial API and implementation
	* EclipseSource - ongoing development
	* Frank Appel - replaced singletons and static fields (Bug 337787)
	******************************************************************************/
	package org.eclipse.rap.ui.internal.servlet;

	import java.io.IOException;
	import java.io.InputStream;
	import java.net.URL;
	import java.text.MessageFormat;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;

	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.FileLocator;
	import org.eclipse.core.runtime.IConfigurationElement;
	import org.eclipse.core.runtime.IExtension;
	import org.eclipse.core.runtime.IExtensionPoint;
	import org.eclipse.core.runtime.IExtensionRegistry;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.equinox.app.IApplication;
	import org.eclipse.rap.rwt.application.Application;
	import org.eclipse.rap.rwt.application.Application.OperationMode;
	import org.eclipse.rap.rwt.application.ApplicationConfiguration;
	import org.eclipse.rap.rwt.application.EntryPoint;
	import org.eclipse.rap.rwt.application.EntryPointFactory;
	import org.eclipse.rap.rwt.client.WebClient;
	import org.eclipse.rap.rwt.internal.lifecycle.DefaultEntryPointFactory;
	import org.eclipse.rap.rwt.service.ResourceLoader;
	import org.eclipse.rap.rwt.service.ServiceHandler;
	import org.eclipse.rap.rwt.service.SettingStoreFactory;
	import org.eclipse.rap.ui.internal.application.EntryPointApplicationWrapper;
	import org.eclipse.rap.ui.internal.branding.AbstractBranding;
	import org.eclipse.rap.ui.internal.branding.BrandingExtension;
	import org.eclipse.rap.ui.internal.branding.BrandingManager;
	import org.eclipse.rap.ui.internal.branding.BrandingUtil;
	import org.eclipse.rap.ui.internal.preferences.WorkbenchFileSettingStoreFactory;
	import org.eclipse.rap.ui.resources.IResource;
	import org.eclipse.swt.widgets.Widget;
	import org.eclipse.ui.internal.WorkbenchPlugin;
	import org.osgi.framework.Bundle;
	import org.osgi.framework.BundleContext;
	import org.osgi.framework.Constants;
	import org.osgi.framework.FrameworkUtil;
	import org.osgi.framework.ServiceReference;
	import org.osgi.service.http.HttpService;


	public class WorkbenchApplicationConfiguration implements ApplicationConfiguration {

	private static final String ID_ENTRY_POINT = "org.eclipse.rap.ui.entrypoint";
	private static final String ID_THEMES = "org.eclipse.rap.ui.themes";
	private static final String ELEMENT_THEME = "theme";
	private static final String ELEMENT_THEME_CONTRIBUTION = "themeContribution";
	private static final String ID_THEMEABLE_WIDGETS = "org.eclipse.rap.ui.themeableWidgets";
	private static final String ID_SERVICE_HANDLER = "org.eclipse.rap.ui.serviceHandler";
	private static final String ID_SETTING_STORES = "org.eclipse.rap.ui.settingstores";

	private static final String PROP_SETTING_STORES_FACTORY
	= "org.eclipse.rap.rwt.settingStoreFactory";

	private static final String RUN = "run"; //$NON-NLS-1$
	private static final String PI_RUNTIME = "org.eclipse.core.runtime"; //$NON-NLS-1$
	private static final String PT_APPLICATIONS = "applications"; //$NON-NLS-1$
	private static final String PT_APP_VISIBLE = "visible"; //$NON-NLS-1$

	private final ServiceReference<HttpService> httpServiceReference;

	// Default constructor to enable subclassing without adding a dependency to OSGi API
	public WorkbenchApplicationConfiguration() {
	httpServiceReference = null;
	}

	/*
	* Note [rst]: public as per request in https://bugs.eclipse.org/bugs/show_bug.cgi?id=372183
	*/
	public WorkbenchApplicationConfiguration( ServiceReference<HttpService> httpServiceReference ) {
	this.httpServiceReference = httpServiceReference;
	}

	@Override
	public void configure( Application application ) {
	application.setOperationMode( OperationMode.SWT_COMPATIBILITY );
	registerSettingStoreFactory( application );
	registerThemeableWidgets( application );
	registerThemes( application );
	registerThemeContributions( application );
	registerResources( application );
	registerServiceHandlers( application );
	registerBrandings( application ); // [rh] brandings must be red before apps/entry points
	registerEntryPoints( application );
	}

	private void registerSettingStoreFactory( Application application ) {
	// determine which factory to use via an environment setting / config.ini
	SettingStoreFactory result = null;
	String factoryId = getOSGiProperty( PROP_SETTING_STORES_FACTORY );
	if( factoryId != null ) {
	result = loadSettingStoreFactory( factoryId );
	}
	if( result == null ) {
	result = new WorkbenchFileSettingStoreFactory(); // default
	}
	application.setSettingStoreFactory( result );
	}

	private SettingStoreFactory loadSettingStoreFactory( String factoryId ) {
	SettingStoreFactory result = null;
	IExtensionRegistry registry = Platform.getExtensionRegistry();
	IExtensionPoint point = registry.getExtensionPoint( ID_SETTING_STORES );
	IConfigurationElement[] elements = point.getConfigurationElements();
	for( int i = 0; i < elements.length; i++ ) {
	String id = elements[ i ].getAttribute( "id" );
	if( factoryId.equals( id ) ) {
	result = loadSettingStoreFactory( elements[ i ] );
	}
	}
	if( result == null ) {
	String msg = "Unable to find setting store factory with id '" + factoryId + "'.";
	WorkbenchPlugin.log( msg );
	}
	return result;
	}

	private SettingStoreFactory loadSettingStoreFactory( IConfigurationElement element ) {
	SettingStoreFactory result = null;
	try {
	result = ( SettingStoreFactory )element.createExecutableExtension( "class" );
	} catch( CoreException cex ) {
	WorkbenchPlugin.log( cex.getStatus() );
	}
	return result;
	}

	private static String getOSGiProperty( String name ) {
	Bundle bundle = FrameworkUtil.getBundle( WorkbenchApplicationConfiguration.class );
	BundleContext bundleContext = bundle.getBundleContext();
	Bundle systemBundle = bundleContext.getBundle( Constants.SYSTEM_BUNDLE_ID );
	return systemBundle.getBundleContext().getProperty( name );
	}

	@SuppressWarnings( "unchecked" )
	private void registerEntryPoints( Application application ) {
	for( IConfigurationElement element : getEntryPointExtensions() ) {
	String id = element.getAttribute( "id" );
	String path = element.getAttribute( "path" );
	String className = element.getAttribute( "class" );
	String applicationId = element.getAttribute( "applicationId" );
	String brandingId = element.getAttribute( "brandingId" );
	try {
	EntryPointFactory entryPointFactory;
	if( className != null ) {
	Class<? extends EntryPoint> entryPointClass = loadClass( className, element );
	entryPointFactory = new DefaultEntryPointFactory( entryPointClass );
	} else if( applicationId != null ) {
	entryPointFactory = createEntryPointFactoryForApplication( applicationId );
	} else {
	throw new IllegalArgumentException( "Neither class nor applicationId specified" );
	}
	Map<String, String> properties = getBrandingProperties( brandingId );
	application.addEntryPoint( path, entryPointFactory, properties );
	} catch( final Throwable thr ) {
	String text = "Could not register entry point ''{0}'' with id ''{1}''.";
	Object[] param = new Object[] { className, id };
	logProblem( text, param, thr, element.getContributor().getName() );
	}
	}
	}

	@SuppressWarnings( "unchecked" )
	private EntryPointFactory createEntryPointFactoryForApplication( String applicationId )
	throws ClassNotFoundException
	{
	IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry();
	String extensionPointId = PI_RUNTIME + '.' + PT_APPLICATIONS;
	IExtension extension = extensionRegistry.getExtension( extensionPointId, applicationId );
	if( extension == null ) {
	String message = "Application extension not found by id: " + applicationId;
	throw new IllegalArgumentException( message );
	}
	IConfigurationElement configElement = extension.getConfigurationElements()[ 0 ];
	String isVisible = configElement.getAttribute( PT_APP_VISIBLE );
	if( isVisible != null && !Boolean.valueOf( isVisible ).booleanValue() ) {
	throw new IllegalArgumentException( "Application is not visible:" + applicationId );
	}
	IConfigurationElement[] runElement = configElement.getChildren( RUN );
	String className = runElement[ 0 ].getAttribute( "class" ); //$NON-NLS-1$
	Class<? extends IApplication> applicationClass = loadClass( className, configElement );
	return createApplicationEntryPointFactory( applicationClass );
	}

	private static EntryPointFactory
	createApplicationEntryPointFactory( final Class<? extends IApplication> applicationClass )
	{
	return new EntryPointFactory() {
	@Override
	public EntryPoint create() {
	return new EntryPointApplicationWrapper( applicationClass );
	}
	};
	}

	@SuppressWarnings( "unchecked" )
	private void registerThemeableWidgets( Application application ) {
	IExtensionRegistry registry = Platform.getExtensionRegistry();
	IExtensionPoint ep = registry.getExtensionPoint( ID_THEMEABLE_WIDGETS );
	IConfigurationElement[] widgetExts = ep.getConfigurationElements();
	for( int i = 0; i < widgetExts.length; i++ ) {
	String contributorName = widgetExts[ i ].getContributor().getName();
	String widgetClass = widgetExts[ i ].getAttribute( "class" );
	try {
	final Bundle bundle = Platform.getBundle( contributorName );
	Class<? extends Widget> widget = (Class<? extends Widget>)bundle.loadClass( widgetClass );
	application.addThemeableWidget( widget );
	} catch( final Throwable thr ) {
	String text = "Could not register themeable widget ''{0}''.";
	Object[] param = new Object[] { widgetClass };
	logProblem( text, param, thr, contributorName );
	}
	}
	}

	private void registerThemes( Application application ) {
	IExtensionRegistry registry = Platform.getExtensionRegistry();
	IExtensionPoint ep = registry.getExtensionPoint( ID_THEMES );
	IConfigurationElement[] elements = ep.getConfigurationElements();
	for( int i = 0; i < elements.length; i++ ) {
	if( ELEMENT_THEME.equals( elements[ i ].getName() ) ) {
	String contributorName = elements[ i ].getContributor().getName();
	String themeId = elements[ i ].getAttribute( "id" );
	String themeFile = elements[ i ].getAttribute( "file" );
	try {
	Bundle bundle = Platform.getBundle( contributorName );
	ResourceLoader resourceLoader = createThemeResourceLoader( bundle );
	application.addStyleSheet( themeId, themeFile, resourceLoader );
	} catch( final Exception e ) {
	String text = "Could not register custom theme ''{0}'' from file ''{1}''.";
	Object[] param = new Object[] { themeId, themeFile };
	logProblem( text, param, e, contributorName );
	}
	}
	}
	}

	private void registerThemeContributions( Application application ) {
	IExtensionRegistry registry = Platform.getExtensionRegistry();
	IExtensionPoint ep = registry.getExtensionPoint( ID_THEMES );
	IConfigurationElement[] elements = ep.getConfigurationElements();
	for( int i = 0; i < elements.length; i++ ) {
	if( ELEMENT_THEME_CONTRIBUTION.equals( elements[ i ].getName() ) ) {
	String contributorName = elements[ i ].getContributor().getName();
	String themeId = elements[ i ].getAttribute( "themeId" );
	String themeFile = elements[ i ].getAttribute( "file" );
	try {
	Bundle bundle = Platform.getBundle( contributorName );
	ResourceLoader loader = createThemeResourceLoader( bundle );
	application.addStyleSheet( themeId, themeFile, loader );
	} catch( final Exception e ) {
	String text = "Could not register contribution for theme ''{0}'' from file ''{1}''.";
	Object[] param = new Object[] { themeId, themeFile };
	logProblem( text, param, e, contributorName );
	}
	}
	}
	}

	private static void registerResources( Application application ) {
	List<IResource> resources = ResourceReader.readResources();
	new ResourceRegisterer( application ).registerResources( resources );
	}

	private static ResourceLoader createThemeResourceLoader( final Bundle bundle ) {
	ResourceLoader result = new ResourceLoader() {
	@Override
	public InputStream getResourceAsStream( final String resourceName ) throws IOException {
	InputStream result = null;
	IPath path = new Path( resourceName );
	URL url = FileLocator.find( bundle, path, null );
	if( url != null ) {
	result = url.openStream();
	}
	return result;
	}
	};
	return result;
	}

	private void registerServiceHandlers( Application application ) {
	IExtensionRegistry registry = Platform.getExtensionRegistry();
	IExtensionPoint point = registry.getExtensionPoint( ID_SERVICE_HANDLER );
	IConfigurationElement[] elements = point.getConfigurationElements();
	for( int i = 0; i < elements.length; i++ ) {
	try {
	String id = elements[ i ].getAttribute( "id" );
	if( id != null ) {
	Object extObject = elements[ i ].createExecutableExtension( "class" );
	ServiceHandler handler = ( ServiceHandler )extObject;
	application.addServiceHandler( id, handler );
	}
	} catch( final CoreException ce ) {
	WorkbenchPlugin.getDefault().getLog().log( ce.getStatus() );
	}
	}
	}

	private void registerBrandings( Application application ) {
	try {
	new BrandingExtension( application, httpServiceReference ).read();
	} catch( final IOException ioe ) {
	throw new RuntimeException( "Unable to read branding extension", ioe );
	}
	}

	private static AbstractBranding findBrandingById( String id ) {
	AbstractBranding result = null;
	AbstractBranding[] brandings = BrandingManager.getInstance().getAll();
	for( AbstractBranding branding : brandings ) {
	if( branding.getId() != null && branding.getId().equals( id ) ) {
	result = branding;
	}
	}
	return result;
	}

	private Map<String, String> getBrandingProperties( String brandingId ) {
	AbstractBranding branding = findBrandingById( brandingId );
	Map<String, String> result = new HashMap<String, String>();
	result.put( BrandingUtil.ENTRY_POINT_BRANDING, brandingId );
	if( branding != null ) {
	result.put( WebClient.THEME_ID, branding.getThemeId() );
	result.put( WebClient.BODY_HTML, branding.getBody() );
	result.put( WebClient.PAGE_TITLE, branding.getTitle() );
	result.put( WebClient.FAVICON, branding.getFavIcon() );
	result.put( WebClient.HEAD_HTML, BrandingUtil.headerMarkup( branding ) );
	}
	return result;
	}

	private static IConfigurationElement[] getEntryPointExtensions() {
	IExtensionRegistry registry = Platform.getExtensionRegistry();
	IExtensionPoint extensionPoint = registry.getExtensionPoint( ID_ENTRY_POINT );
	IConfigurationElement[] elements = extensionPoint.getConfigurationElements();
	return elements;
	}

	private static void logProblem( String text,
	Object[] textParams,
	Throwable problem,
	String bundleId )
	{
	String msg = MessageFormat.format( text, textParams );
	Status status = new Status( IStatus.ERROR, bundleId, IStatus.OK, msg, problem );
	WorkbenchPlugin.getDefault().getLog().log( status );
	}

	private static <T> T loadClass( String className, IConfigurationElement element )
	throws ClassNotFoundException
	{
	Bundle bundle = Platform.getBundle( element.getContributor().getName() );
	return ( T )bundle.loadClass( className );
	}

	}