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annotate src/org/tmatesoft/hg/util/ProgressSupport.java @ 176:a8df7162ec75

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Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sat, 02 Apr 2011 03:01:14 +0200
parents d5268ca7715b
children 41a778e3fd31
rev   line source
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1 /*
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2 * Copyright (c) 2011 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.util;
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18
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19 /**
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20 * Mix-in to report progress of a long-running operation
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21 *
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22 * @author Artem Tikhomirov
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23 * @author TMate Software Ltd.
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24 */
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25 public interface ProgressSupport {
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26
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27 public void start(long totalUnits);
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28 public void worked(int units);
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29 public void done();
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30
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31 static class Factory {
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32
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33 /**
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34 * @param target object that might be capable to report progress. Can be <code>null</code>
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35 * @return support object extracted from target or an empty, no-op implementation
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36 */
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37 public static ProgressSupport get(Object target) {
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38 if (target instanceof ProgressSupport) {
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39 return (ProgressSupport) target;
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40 }
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41 if (target instanceof Adaptable) {
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42 ProgressSupport ps = ((Adaptable) target).getAdapter(ProgressSupport.class);
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43 if (ps != null) {
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44 return ps;
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45 }
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46 }
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47 return new ProgressSupport() {
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48 public void start(long totalUnits) {
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49 }
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50 public void worked(int units) {
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51 }
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52 public void done() {
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53 }
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54 };
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55 }
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56 }
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57 }