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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13
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14 module dwtx.jface.text.formatter.ContextBasedFormattingStrategy;
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15
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16 import dwt.dwthelper.utils;
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17
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18 import java.util.LinkedList;
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19 import java.util.Map;
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20
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21 /**
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22 * Formatting strategy for context based content formatting. Retrieves the preferences
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23 * set on the formatting context's {@link FormattingContextProperties#CONTEXT_PREFERENCES}
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24 * property and makes them available to subclasses.
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25 * <p>
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26 *
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27 * @since 3.0
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28 */
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29 public abstract class ContextBasedFormattingStrategy : IFormattingStrategy, IFormattingStrategyExtension {
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30
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31 /** The current preferences for formatting */
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32 private Map fCurrentPreferences= null;
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33
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34 /** The list of preferences for initiated the formatting steps */
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35 private final LinkedList fPreferences= new LinkedList();
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36
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37 /*
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38 * @see dwtx.jface.text.formatter.IFormattingStrategyExtension#format()
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39 */
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40 public void format() {
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41 fCurrentPreferences= (Map)fPreferences.removeFirst();
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42 }
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43
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44 /*
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45 * @see dwtx.jface.text.formatter.IFormattingStrategy#format(java.lang.String, bool, java.lang.String, int[])
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46 */
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47 public String format(String content, bool start, String indentation, int[] positions) {
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48 return null;
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49 }
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50
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51 /*
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52 * @see dwtx.jface.text.formatter.IFormattingStrategyExtension#formatterStarts(dwtx.jface.text.formatter.IFormattingContext)
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53 */
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54 public void formatterStarts(final IFormattingContext context) {
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55 fPreferences.addLast(context.getProperty(FormattingContextProperties.CONTEXT_PREFERENCES));
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56 }
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57
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58 /*
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59 * @see IFormattingStrategy#formatterStarts(String)
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60 */
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61 public void formatterStarts(final String indentation) {
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62 // Do nothing
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63 }
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64
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65 /*
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66 * @see dwtx.jface.text.formatter.IFormattingStrategyExtension#formatterStops()
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67 */
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68 public void formatterStops() {
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69 fPreferences.clear();
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70
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71 fCurrentPreferences= null;
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72 }
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73
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74 /**
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75 * Returns the preferences used for the current formatting step.
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76 *
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77 * @return The preferences for the current formatting step
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78 */
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79 public final Map getPreferences() {
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80 return fCurrentPreferences;
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81 }
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82 }
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