| /******************************************************************************* |
| * 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.jface.text.formatter; |
| |
| import java.util.LinkedList; |
| import java.util.Map; |
| |
| /** |
| * Formatting strategy for context based content formatting. Retrieves the preferences |
| * set on the formatting context's {@link FormattingContextProperties#CONTEXT_PREFERENCES} |
| * property and makes them available to subclasses. |
| * <p> |
| * |
| * @since 3.0 |
| */ |
| public abstract class ContextBasedFormattingStrategy implements IFormattingStrategy, IFormattingStrategyExtension { |
| |
| /** The current preferences for formatting */ |
| private Map<String, String> fCurrentPreferences= null; |
| |
| /** The list of preferences for initiated the formatting steps */ |
| private final LinkedList<Map<String, String>> fPreferences= new LinkedList<>(); |
| |
| @Override |
| public void format() { |
| fCurrentPreferences= fPreferences.removeFirst(); |
| } |
| |
| @Override |
| public String format(String content, boolean start, String indentation, int[] positions) { |
| return null; |
| } |
| |
| @Override |
| public void formatterStarts(final IFormattingContext context) { |
| @SuppressWarnings("unchecked") |
| Map<String, String> prefs= (Map<String, String>) context.getProperty(FormattingContextProperties.CONTEXT_PREFERENCES); |
| fPreferences.addLast(prefs); |
| } |
| |
| @Override |
| public void formatterStarts(final String indentation) { |
| // Do nothing |
| } |
| |
| @Override |
| public void formatterStops() { |
| fPreferences.clear(); |
| |
| fCurrentPreferences= null; |
| } |
| |
| /** |
| * Returns the preferences used for the current formatting step. |
| * |
| * @return The preferences for the current formatting step |
| */ |
| public final Map<String, String> getPreferences() { |
| return fCurrentPreferences; |
| } |
| } |