| /******************************************************************************* |
| * Copyright (c) 2007, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Wind River Systems - Pawel Piech: Bug 213244 - VariableAdapterService should also call IAdaptable.getAdapter() for adaptables that implement this method directly. |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.viewers.model; |
| |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IColumnPresentationFactory; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementContentProvider; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementEditor; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementLabelProvider; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementMementoProvider; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelProxyFactory; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelProxyFactory2; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelSelectionPolicy; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelSelectionPolicyFactory; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerInputProvider; |
| import org.eclipse.debug.internal.ui.views.launch.DebugElementAdapterFactory; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| |
| /** |
| * Helper class to retrieve adapters associated with viewers. |
| * |
| * @since 3.4 |
| */ |
| public class ViewerAdapterService { |
| |
| |
| /** |
| * Returns the content provider for the given element or |
| * <code>null</code> if none. |
| * |
| * @param element element to retrieve adapter for |
| * @return content provider or <code>null</code> |
| */ |
| public static IElementContentProvider getContentProvider(Object element) { |
| return (IElementContentProvider)getAdapter(element, IElementContentProvider.class); |
| } |
| |
| /** |
| * Returns the label provider for the given element or |
| * <code>null</code> if none. |
| * |
| * @param element element to retrieve adapter for |
| * @return label provider or <code>null</code> |
| */ |
| public static IElementLabelProvider getLabelProvider(Object element) { |
| IElementLabelProvider lp = (IElementLabelProvider)getAdapter(element, IElementLabelProvider.class); |
| if (lp == null && element instanceof String) { |
| // there are no adapters registered for Strings |
| return new DebugElementAdapterFactory().getAdapter(element, IElementLabelProvider.class); |
| } |
| return lp; |
| } |
| |
| /** |
| * Returns the column presentation factory for the given element or <code>null</code>. |
| * |
| * @param element element to retrieve adapter for |
| * @return column presentation factory of <code>null</code> |
| */ |
| public static IColumnPresentationFactory getColumnPresentationFactory(Object element) { |
| return (IColumnPresentationFactory)getAdapter(element, IColumnPresentationFactory.class); |
| } |
| |
| /** |
| * Returns the model proxy factory for the given element or |
| * <code>null</code> if none. |
| * |
| * @param element element to retrieve adapter for |
| * @return model proxy factory or <code>null</code> |
| */ |
| public static IModelProxyFactory getModelProxyFactory(Object element) { |
| return (IModelProxyFactory)getAdapter(element, IModelProxyFactory.class); |
| } |
| |
| /** |
| * Returns the model proxy factory v.2 for the given element or |
| * <code>null</code> if none. |
| * |
| * @param element element to retrieve adapter for |
| * @return model proxy factory or <code>null</code> |
| */ |
| public static IModelProxyFactory2 getModelProxyFactory2(Object element) { |
| return (IModelProxyFactory2)getAdapter(element, IModelProxyFactory2.class); |
| } |
| |
| /** |
| * Returns the memento provider for the given element or |
| * <code>null</code> if none. |
| * |
| * @param element element to retrieve adapter for |
| * @return memento provider or <code>null</code> |
| */ |
| public static IElementMementoProvider getMementoProvider(Object element) { |
| return (IElementMementoProvider)getAdapter(element, IElementMementoProvider.class); |
| } |
| |
| /** |
| * Returns the element editor for the given element or <code>null</code>. |
| * |
| * @param element element to retrieve adapter for |
| * @return element editor or <code>null</code> |
| */ |
| public static IElementEditor getElementEditor(Object element) { |
| return (IElementEditor)getAdapter(element, IElementEditor.class); |
| } |
| |
| /** |
| * Creates and returns the selection policy associated with the given selection |
| * or <code>null</code> if none. |
| * |
| * @param selection or <code>null</code> |
| * @param context presentation context |
| * @return selection policy or <code>null</code> |
| */ |
| public static IModelSelectionPolicy getSelectionPolicy(ISelection selection, IPresentationContext context) { |
| if (selection instanceof IStructuredSelection) { |
| IStructuredSelection ss = (IStructuredSelection) selection; |
| Object element = ss.getFirstElement(); |
| IModelSelectionPolicyFactory factory = (IModelSelectionPolicyFactory) getAdapter(element, IModelSelectionPolicyFactory.class); |
| if (factory != null) { |
| return factory.createModelSelectionPolicyAdapter(element, context); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the viewer input provider for the given element or |
| * <code>null</code> if none. |
| * |
| * @param element element to retrieve adapter for |
| * @return viewer input provider or <code>null</code> |
| */ |
| public static IViewerInputProvider getInputProvider(Object element) { |
| return (IViewerInputProvider)getAdapter(element, IViewerInputProvider.class); |
| } |
| |
| /** |
| * Returns an adapter of the specified type for the given object or <code>null</code> |
| * if none. |
| * |
| * @param element element to retrieve adapter for |
| * @param type adapter type |
| * @return adapter or <code>null</code> |
| */ |
| private static Object getAdapter(Object element, Class<?> type) { |
| return DebugPlugin.getAdapter(element, type); |
| } |
| } |