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annotate src/org/tmatesoft/hg/repo/ext/HgExtensionsManager.java @ 520:1ee452f31187

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Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 21 Dec 2012 21:20:26 +0100
parents d2f6ab541330
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1 /*
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2 * Copyright (c) 2012 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo.ext;
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18
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19 import org.tmatesoft.hg.internal.Internals;
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20 import org.tmatesoft.hg.repo.HgRepoConfig;
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21
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22 /**
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23 *
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24 * @author Artem Tikhomirov
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25 * @author TMate Software Ltd.
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26 */
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27 public abstract class HgExtensionsManager {
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28
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29 public enum HgExt {
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30 MQ ("mq"), Rebase("rebase");
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31
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32 private final String mercurialExtName;
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33
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34 private HgExt(String nativeName) {
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35 mercurialExtName = nativeName;
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36 }
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37
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38 String getNativeName() {
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39 return mercurialExtName;
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40 }
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41 }
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42
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43 private final Internals repo;
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44 private MqManager mqExt;
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45 private Rebase rebaseExt;
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46
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47 protected HgExtensionsManager(Internals internalRepo) {
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48 repo = internalRepo;
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49 }
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50
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51 public boolean isEnabled(HgExt e) {
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52 HgRepoConfig cfg = repo.getRepo().getConfiguration();
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53 return cfg.getExtensions().isEnabled(e.getNativeName());
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54 }
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55
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56 public Rebase getRebaseExtension() {
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57 if (rebaseExt == null && isEnabled(HgExt.Rebase)) {
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58 rebaseExt = new Rebase(repo);
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59 }
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60 return rebaseExt;
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61 }
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62
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63 public MqManager getMQ() {
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64 if (mqExt == null && isEnabled(HgExt.MQ)) {
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65 mqExt = new MqManager(repo);
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66 }
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67 return mqExt;
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68 }
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69 }