| /******************************************************************************* |
| * Copyright (c) 2000, 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 |
| *******************************************************************************/ |
| package org.eclipse.search2.internal.ui; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.ISafeRunnable; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.SafeRunner; |
| |
| import org.eclipse.jface.util.SafeRunnable; |
| |
| import org.eclipse.search.internal.ui.SearchPlugin; |
| import org.eclipse.search.ui.ISearchResult; |
| import org.eclipse.search.ui.ISearchResultPage; |
| |
| public class SearchPageRegistry { |
| |
| public static final String ID_EXTENSION_POINT= "org.eclipse.search.searchResultViewPages"; //$NON-NLS-1$ |
| public static final String ATTRIB_SEARCH_RESULT_CLASS= "searchResultClass"; //$NON-NLS-1$ |
| public static final String ATTRIB_ID= "id"; //$NON-NLS-1$ |
| |
| public static final String ATTRIB_LABEL= "label"; //$NON-NLS-1$ |
| public static final String ATTRIB_ICON= "icon"; //$NON-NLS-1$ |
| |
| public static final String ATTRIB_HELP_CONTEXT= "helpContextId"; //$NON-NLS-1$ |
| |
| private final Map<String, IConfigurationElement> fResultClassNameToExtension; |
| private final Map<IConfigurationElement, ISearchResultPage> fExtensionToInstance; |
| private final IConfigurationElement[] fExtensions; |
| |
| public SearchPageRegistry() { |
| fExtensionToInstance= new HashMap<>(); |
| fResultClassNameToExtension= new HashMap<>(); |
| fExtensions= Platform.getExtensionRegistry().getConfigurationElementsFor(ID_EXTENSION_POINT); |
| for (IConfigurationElement fExtension : fExtensions) { |
| fResultClassNameToExtension.put(fExtension.getAttribute(ATTRIB_SEARCH_RESULT_CLASS), fExtension); |
| } |
| } |
| |
| public ISearchResultPage findPageForSearchResult(ISearchResult result, boolean create) { |
| Class<? extends ISearchResult> resultClass= result.getClass(); |
| IConfigurationElement configElement= findConfigurationElement(resultClass); |
| if (configElement != null) { |
| return getSearchResultPage(configElement, create); |
| } |
| return null; |
| } |
| |
| public ISearchResultPage findPageForPageId(String pageId, boolean create) { |
| IConfigurationElement configElement= findConfigurationElement(pageId); |
| if (configElement != null) { |
| return getSearchResultPage(configElement, create); |
| } |
| return null; |
| } |
| |
| public String findLabelForPageId(String pageId) { |
| IConfigurationElement configElement= findConfigurationElement(pageId); |
| if (configElement != null) { |
| return configElement.getAttribute(ATTRIB_LABEL); |
| } |
| return null; |
| } |
| |
| public String getHelpContextId(String pageId) { |
| IConfigurationElement configElement= findConfigurationElement(pageId); |
| if (configElement != null) { |
| return configElement.getAttribute(ATTRIB_HELP_CONTEXT); |
| } |
| return null; |
| } |
| |
| private ISearchResultPage getSearchResultPage(final IConfigurationElement configElement, boolean create) { |
| ISearchResultPage instance= fExtensionToInstance.get(configElement); |
| if (instance == null && create) { |
| final Object[] result= new Object[1]; |
| |
| ISafeRunnable safeRunnable= new SafeRunnable(SearchMessages.SearchPageRegistry_error_creating_extensionpoint) { |
| @Override |
| public void run() throws Exception { |
| result[0]= configElement.createExecutableExtension("class"); //$NON-NLS-1$ |
| } |
| @Override |
| public void handleException(Throwable e) { |
| // invalid contribution |
| SearchPlugin.log(e); |
| } |
| }; |
| SafeRunner.run(safeRunnable); |
| if (result[0] instanceof ISearchResultPage) { |
| instance= (ISearchResultPage) result[0]; |
| instance.setID(configElement.getAttribute(ATTRIB_ID)); |
| fExtensionToInstance.put(configElement, instance); |
| } |
| } |
| return instance; |
| } |
| |
| private IConfigurationElement findConfigurationElement(String pageId) { |
| for (IConfigurationElement curr : fExtensions) { |
| if (pageId.equals(curr.getAttribute(ATTRIB_ID))) { |
| return curr; |
| } |
| } |
| return null; |
| } |
| |
| private IConfigurationElement findConfigurationElement(Class<?> resultClass) { |
| String className= resultClass.getName(); |
| IConfigurationElement configElement= fResultClassNameToExtension.get(className); |
| if (configElement != null) { |
| return configElement; |
| } |
| Class<?> superclass= resultClass.getSuperclass(); |
| if (superclass != null) { |
| IConfigurationElement foundExtension= findConfigurationElement(superclass); |
| if (foundExtension != null) { |
| fResultClassNameToExtension.put(className, configElement); |
| return foundExtension; |
| } |
| } |
| |
| Class<?>[] interfaces= resultClass.getInterfaces(); |
| for (Class<?> interface1 : interfaces) { |
| IConfigurationElement foundExtension= findConfigurationElement(interface1); |
| if (foundExtension != null) { |
| fResultClassNameToExtension.put(className, configElement); |
| return foundExtension; |
| } |
| } |
| return null; |
| } |
| |
| |
| |
| } |