| /****************************************************************************** |
| * Copyright (c) 2010 Oracle |
| * 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: |
| * Konstantin Komissarchik - initial implementation and ongoing maintenance |
| ******************************************************************************/ |
| |
| package org.eclipse.jst.common.project.facet.ui.libprov.internal; |
| |
| import static org.eclipse.jst.common.project.facet.core.libprov.internal.LibraryProviderFrameworkImpl.reportProviderNotDefined; |
| import static org.eclipse.jst.common.project.facet.ui.internal.FacetedProjectFrameworkJavaExtUiPlugin.PLUGIN_ID; |
| import static org.eclipse.wst.common.project.facet.core.util.internal.PluginUtil.findRequiredAttribute; |
| import static org.eclipse.wst.common.project.facet.core.util.internal.PluginUtil.instantiate; |
| import static org.eclipse.wst.common.project.facet.core.util.internal.PluginUtil.loadClass; |
| |
| import java.util.ArrayList; |
| import java.util.EnumMap; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| 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.Platform; |
| import org.eclipse.jst.common.project.facet.core.libprov.ILibraryProvider; |
| import org.eclipse.jst.common.project.facet.core.libprov.LibraryInstallDelegate; |
| import org.eclipse.jst.common.project.facet.core.libprov.LibraryProviderActionType; |
| import org.eclipse.jst.common.project.facet.core.libprov.LibraryProviderFramework; |
| import org.eclipse.jst.common.project.facet.ui.libprov.LibraryProviderOperationPanel; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.wst.common.project.facet.core.util.internal.PluginUtil.InvalidExtensionException; |
| |
| /** |
| * @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a> |
| */ |
| |
| public final class LibraryProviderFrameworkUiImpl |
| { |
| private static final String EXTENSION_POINT_ID = "libraryProviderActionPanels"; //$NON-NLS-1$ |
| |
| private static final String EL_PANEL = "panel"; //$NON-NLS-1$ |
| private static final String ATTR_CLASS = "class"; //$NON-NLS-1$ |
| private static final String ATTR_PROVIDER = "provider"; //$NON-NLS-1$ |
| |
| private static LibraryProviderFrameworkUiImpl instance = null; |
| |
| private final Map<ILibraryProvider,Map<LibraryProviderActionType,PanelDef>> panels; |
| |
| public LibraryProviderFrameworkUiImpl() |
| { |
| this.panels = new HashMap<ILibraryProvider,Map<LibraryProviderActionType,PanelDef>>(); |
| readExtensions(); |
| } |
| |
| public static synchronized LibraryProviderFrameworkUiImpl get() |
| { |
| if( instance == null ) |
| { |
| instance = new LibraryProviderFrameworkUiImpl(); |
| } |
| |
| return instance; |
| } |
| |
| public Control createInstallLibraryPanel( final Composite parent, |
| final LibraryInstallDelegate delegate, |
| final String label ) |
| { |
| return new LibraryInstallPanel( parent, delegate, label ); |
| } |
| |
| public LibraryProviderOperationPanel getOperationPanel( final ILibraryProvider provider, |
| final LibraryProviderActionType actionType ) |
| { |
| ILibraryProvider prov = provider; |
| PanelDef panelDef = null; |
| |
| while( prov != null && panelDef == null ) |
| { |
| final Map<LibraryProviderActionType,PanelDef> providerPanelDefs = this.panels.get( prov ); |
| |
| if( providerPanelDefs != null ) |
| { |
| panelDef = providerPanelDefs.get( actionType ); |
| } |
| |
| prov = prov.getBaseProvider(); |
| } |
| |
| if( panelDef == null ) |
| { |
| return null; |
| } |
| |
| final Class<LibraryProviderOperationPanel> panelClass = panelDef.getPanelClass(); |
| |
| if( panelClass == null ) |
| { |
| return null; |
| } |
| |
| return instantiate( panelDef.getPluginId(), panelClass ); |
| } |
| |
| private void readExtensions() |
| { |
| final IExtensionRegistry registry = Platform.getExtensionRegistry(); |
| |
| final IExtensionPoint point |
| = registry.getExtensionPoint( PLUGIN_ID, EXTENSION_POINT_ID ); |
| |
| if( point == null ) |
| { |
| throw new IllegalStateException(); |
| } |
| |
| final List<IConfigurationElement> cfgels = new ArrayList<IConfigurationElement>(); |
| |
| for( IExtension extension : point.getExtensions() ) |
| { |
| for( IConfigurationElement element : extension.getConfigurationElements() ) |
| { |
| cfgels.add( element ); |
| } |
| } |
| |
| for( IConfigurationElement element : cfgels ) |
| { |
| if( ! element.getName().equals( EL_PANEL ) ) |
| { |
| continue; |
| } |
| |
| try |
| { |
| final String pluginId = element.getContributor().getName(); |
| |
| final String providerId = findRequiredAttribute( element, ATTR_PROVIDER ); |
| |
| if( ! LibraryProviderFramework.isProviderDefined( providerId ) ) |
| { |
| reportProviderNotDefined( providerId, pluginId ); |
| throw new InvalidExtensionException(); |
| } |
| |
| final ILibraryProvider provider |
| = LibraryProviderFramework.getProvider( providerId ); |
| |
| final String panelClassName = findRequiredAttribute( element, ATTR_CLASS ); |
| |
| final PanelDef panelDef = new PanelDef( pluginId, panelClassName ); |
| |
| Map<LibraryProviderActionType,PanelDef> providerPanelDefs = this.panels.get( provider ); |
| |
| if( providerPanelDefs == null ) |
| { |
| providerPanelDefs = new EnumMap<LibraryProviderActionType,PanelDef>( LibraryProviderActionType.class ); |
| this.panels.put( provider, providerPanelDefs ); |
| } |
| |
| providerPanelDefs.put( LibraryProviderActionType.INSTALL, panelDef ); |
| } |
| catch( InvalidExtensionException e ) |
| { |
| // Ignore and continue. The problem has already been reported to the user |
| // in the log. |
| } |
| } |
| } |
| |
| private static final class PanelDef |
| { |
| private final String pluginId; |
| private final String className; |
| private Class<LibraryProviderOperationPanel> panelClass; |
| |
| public PanelDef( final String pluginId, |
| final String className ) |
| { |
| this.pluginId = pluginId; |
| this.className = className; |
| this.panelClass = null; |
| } |
| |
| public String getPluginId() |
| { |
| return this.pluginId; |
| } |
| |
| public synchronized Class<LibraryProviderOperationPanel> getPanelClass() |
| { |
| if( this.panelClass == null ) |
| { |
| this.panelClass = loadClass( this.pluginId, this.className ); |
| } |
| |
| return this.panelClass; |
| } |
| } |
| |
| } |