| /******************************************************************************* |
| * Copyright (c) 2008, 2016 xored software, Inc. and others. |
| * |
| * 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: |
| * xored software, Inc. - initial API and Implementation (Alex Panchenko) |
| *******************************************************************************/ |
| package org.eclipse.dltk.formatter; |
| |
| import java.util.Map; |
| |
| import org.eclipse.dltk.formatter.internal.FormatterIndentGenerator; |
| import org.eclipse.dltk.formatter.internal.FormatterMixedIndentGenerator; |
| import org.eclipse.dltk.ui.CodeFormatterConstants; |
| import org.eclipse.dltk.ui.formatter.IScriptFormatter; |
| import org.eclipse.jface.text.IDocument; |
| |
| /** |
| * Abstract base class for the {@link IScriptFormatter} implementations. |
| */ |
| public abstract class AbstractScriptFormatter implements IScriptFormatter { |
| |
| private final Map<String, ? extends Object> preferences; |
| |
| /** |
| * @param preferences |
| */ |
| protected AbstractScriptFormatter(Map<String, ? extends Object> preferences) { |
| this.preferences = preferences; |
| } |
| |
| protected boolean getBoolean(String key) { |
| Object value = preferences.get(key); |
| if (value != null) { |
| if (value instanceof Boolean) { |
| return ((Boolean) value).booleanValue(); |
| } |
| if (value instanceof Number) { |
| return ((Number) value).intValue() != 0; |
| } |
| return Boolean.valueOf(value.toString()).booleanValue(); |
| } |
| return false; |
| } |
| |
| protected int getInt(String key) { |
| return toInt(preferences.get(key)); |
| } |
| |
| private static int toInt(Object value) { |
| if (value != null) { |
| if (value instanceof Number) { |
| return ((Number) value).intValue(); |
| } |
| try { |
| return Integer.parseInt(value.toString()); |
| } catch (NumberFormatException e) { |
| // ignore |
| } |
| } |
| return 0; |
| } |
| |
| protected String getString(String key) { |
| Object value = preferences.get(key); |
| if (value != null) { |
| return value.toString(); |
| } |
| return null; |
| } |
| |
| /** |
| * @since 2.0 |
| */ |
| protected IFormatterIndentGenerator createIndentGenerator() { |
| final int tabSize = getInt(CodeFormatterConstants.FORMATTER_TAB_SIZE); |
| final int indentSize = getInt(CodeFormatterConstants.FORMATTER_INDENTATION_SIZE); |
| final String indentType = getString(CodeFormatterConstants.FORMATTER_TAB_CHAR); |
| if (CodeFormatterConstants.SPACE.equals(indentType)) { |
| return new FormatterIndentGenerator(' ', indentSize, tabSize); |
| } else if (CodeFormatterConstants.MIXED.equals(indentType)) { |
| return new FormatterMixedIndentGenerator(indentSize, tabSize); |
| } else { |
| return new FormatterIndentGenerator('\t', 1, tabSize); |
| } |
| } |
| |
| @Override |
| public int detectIndentationLevel(IDocument document, int offset) { |
| return 0; |
| } |
| |
| } |