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comparison src/org/tmatesoft/hg/util/ProgressSupport.java @ 425:48f993aa2f41

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FIXMEs: exceptions, javadoc
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 28 Mar 2012 18:39:29 +0200
parents 91d75e1bac9f
children
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equal deleted inserted replaced
424:6437d261048a 425:48f993aa2f41
1 /* 1 /*
2 * Copyright (c) 2011 TMate Software Ltd 2 * Copyright (c) 2011-2012 TMate Software Ltd
3 * 3 *
4 * This program is free software; you can redistribute it and/or modify 4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by 5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License. 6 * the Free Software Foundation; version 2 of the License.
7 * 7 *
24 */ 24 */
25 public interface ProgressSupport { 25 public interface ProgressSupport {
26 26
27 // -1 for unspecified? 27 // -1 for unspecified?
28 public void start(int totalUnits); 28 public void start(int totalUnits);
29 public void worked(int units); 29 public void worked(int units); // fraction of totalUnits from #start(int)
30 // XXX have to specify whether PS implementors may expect #done regardless of job completion (i.e. in case of cancellation) 30 // XXX have to specify whether PS implementors may expect #done regardless of job completion (i.e. in case of cancellation)
31 public void done(); 31 public void done();
32 32
33 static class Factory { 33 static class Factory {
34 34
51 }; 51 };
52 } 52 }
53 } 53 }
54 54
55 class Sub implements ProgressSupport { 55 class Sub implements ProgressSupport {
56 private int perChildWorkUnitMultiplier; // to multiply child ps units
57 private int perChildWorkUnitDivisor; // to scale down to parent ps units
58 private int unitsConsumed; // parent ps units consumed so far
59 private int fraction = 0; // leftovers of previous not completely consumed work units
56 private final ProgressSupport ps; 60 private final ProgressSupport ps;
57 private int total; 61 private final int psUnits; // total parent ps units
58 private int units;
59 private int psUnits;
60 62
61 public Sub(ProgressSupport parent, int parentUnits) { 63 public Sub(ProgressSupport parent, int parentUnits) {
62 if (parent == null) { 64 if (parent == null) {
63 throw new IllegalArgumentException(); 65 throw new IllegalArgumentException();
64 } 66 }
65 ps = parent; 67 ps = parent;
66 psUnits = parentUnits; 68 psUnits = parentUnits;
67 } 69 }
68 70
69 public void start(int totalUnits) { 71 public void start(int totalUnits) {
70 total = totalUnits; 72 // perChildWorkUnit = (psUnits*100) / totalUnits;
73 perChildWorkUnitDivisor = 10 * totalUnits;
74 perChildWorkUnitMultiplier = psUnits * perChildWorkUnitDivisor / totalUnits;
75
71 } 76 }
72 77
73 public void worked(int worked) { 78 public void worked(int worked) {
74 // FIXME fine-grained subprogress report. now only report at about 50% 79 int x = fraction + worked * perChildWorkUnitMultiplier;
75 if (psUnits > 1 && units < total/2 && units+worked > total/2) { 80 int u = x / perChildWorkUnitDivisor;
76 ps.worked(psUnits/2); 81 fraction = x % perChildWorkUnitDivisor;
77 psUnits -= psUnits/2; 82 if (u > 0) {
83 ps.worked(u);
84 unitsConsumed += u;
78 } 85 }
79 units += worked;
80 } 86 }
81 87
82 public void done() { 88 public void done() {
83 ps.worked(psUnits); 89 ps.worked(psUnits - unitsConsumed);
84 } 90 }
85 } 91 }
86 92
87 interface Target<T> { 93 interface Target<T> {
88 T set(ProgressSupport ps); 94 T set(ProgressSupport ps);
89 } 95 }
90 } 96 }