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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 module dwtx.jface.text.source.ILineDiffInfo;
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14
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15 import dwt.dwthelper.utils;
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16
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17
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18 /**
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19 * Describes the change state of one line, which consists of the state of the line itself, which
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20 * can be <code>UNCHANGED</code>, <code>CHANGED</code> or <code>ADDED</code>, and the number of
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21 * deleted lines before and after this line.
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22 * <p>
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23 * This interface may be implemented by clients.
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24 * </p>
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25 *
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26 * @since 3.0
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27 */
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28 public interface ILineDiffInfo {
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29
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30 /** Denotes an unchanged line. */
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31 static final int UNCHANGED= 0;
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32
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33 /** Denotes an added line. */
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34 static final int ADDED= 1;
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35
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36 /** Denotes a changed line. */
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37 static final int CHANGED= 2;
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38
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39 /**
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40 * Returns the number of deleted lines after this line.
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41 *
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42 * @return the number of lines after this line.
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43 */
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44 int getRemovedLinesBelow();
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45
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46 /**
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47 * Returns the number of deleted lines before this line.
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48 *
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49 * @return the number of lines before this line.
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50 */
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51 int getRemovedLinesAbove();
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52
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53 /**
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54 * Returns the type of this line, one out of <code>UNCHANGED</code>, <code>CHANGED</code> or
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55 * <code>ADDED</code>.
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56 *
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57 * @return the type of this line.
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58 */
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59 int getChangeType();
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60
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61 /**
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62 * Returns whether this line has any changes (to itself, or any deletions before or after it).
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63 *
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64 * @return <code>true</code>, if the line's state (as returned by <code>getType</code>) is
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65 * either <code>CHANGED</code> or <code>ADDED</code> or either of <code>getRemovedLinesBelow</code>
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66 * and <code>getRemovedLinesAbove</code> would return a number > 0
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67 */
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68 bool hasChanges();
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69
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70 /**
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71 * Returns the original text of this changed region
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72 *
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73 * @return the original text of this changed region, including any deleted lines. The returned
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74 * value and its elements may not be <code>null/code>, it may however be of zero length
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75 */
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76 String[] getOriginalText();
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77 }
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