| /*=============================================================================# |
| # Copyright (c) 2006, 2020 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.ltk.ui.util; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.preferences.DefaultScope; |
| import org.eclipse.core.runtime.preferences.IScopeContext; |
| import org.eclipse.core.runtime.preferences.InstanceScope; |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.ui.texteditor.ChainedPreferenceStore; |
| |
| import org.eclipse.statet.jcommons.collections.ImList; |
| |
| import org.eclipse.statet.ecommons.preferences.core.PreferenceAccess; |
| import org.eclipse.statet.ecommons.preferences.ui.ScopedPreferenceStore; |
| |
| |
| /** |
| * Util to create combination of preference stores. |
| */ |
| public class CombinedPreferenceStore { |
| |
| public static IPreferenceStore createStore( |
| final IPreferenceStore[] preferenceStores, final PreferenceAccess corePrefs, final String[] coreQualifier) { |
| |
| ImList<IScopeContext> contexts= corePrefs.getPreferenceContexts(); |
| // default scope must not be included (will be automatically added) |
| if (contexts.size() > 0 && contexts.get(contexts.size() - 1) instanceof DefaultScope) { |
| contexts= contexts.subList(0, contexts.size() - 1); |
| } |
| final IScopeContext mainScope= (!contexts.isEmpty()) ? contexts.get(0) : InstanceScope.INSTANCE; |
| |
| if (preferenceStores.length == 0 && contexts.size() <= 1 && coreQualifier.length == 1) { |
| return new ScopedPreferenceStore(mainScope, coreQualifier[0]); |
| } |
| |
| final List<IPreferenceStore> stores= new ArrayList<>(); |
| for (final String qualifier : coreQualifier) { |
| final ScopedPreferenceStore store= new ScopedPreferenceStore(mainScope, qualifier); |
| store.setSearchContexts(contexts); |
| stores.add(store); |
| } |
| stores.addAll(Arrays.asList(preferenceStores)); |
| return new ChainedPreferenceStore(stores.toArray(new IPreferenceStore[stores.size()])); |
| } |
| |
| public static IPreferenceStore createStore(final PreferenceAccess corePrefs, final String coreQualifier) { |
| return createStore(new IPreferenceStore[0], corePrefs, new String[] { coreQualifier }); |
| } |
| |
| public static IPreferenceStore createStore(final IPreferenceStore... preferenceStores) { |
| return new ChainedPreferenceStore(preferenceStores); |
| } |
| |
| |
| private CombinedPreferenceStore() {} |
| |
| } |