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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 EasyMercurial
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5
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6 Based on HgExplorer by Jari Korhonen
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7 Copyright (c) 2010 Jari Korhonen
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8 Copyright (c) 2010 Chris Cannam
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9 Copyright (c) 2010 Queen Mary, University of London
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10
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11 This program is free software; you can redistribute it and/or
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12 modify it under the terms of the GNU General Public License as
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13 published by the Free Software Foundation; either version 2 of the
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14 License, or (at your option) any later version. See the file
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15 COPYING included with this distribution for more information.
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16 */
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17
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18 #include "historywidget.h"
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19
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20 #include "changesetscene.h"
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21 #include "panned.h"
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22 #include "panner.h"
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23 #include "grapher.h"
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24 #include "debug.h"
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25 #include "uncommitteditem.h"
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26
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27 #include <iostream>
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28
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29 #include <QGridLayout>
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30
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31 HistoryWidget::HistoryWidget()
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32 {
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33 m_panned = new Panned;
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34 m_panner = new Panner;
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35 m_uncommitted = new UncommittedItem();
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36 m_uncommitted->setRow(-1);
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37 m_uncommittedVisible = false;
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38
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39 QGridLayout *layout = new QGridLayout;
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40 layout->addWidget(m_panned, 0, 0);
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41 layout->addWidget(m_panner, 0, 1);
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42 m_panner->setMaximumWidth(80);
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43 m_panner->connectToPanned(m_panned);
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44
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45 setLayout(layout);
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46 }
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47
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48 HistoryWidget::~HistoryWidget()
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49 {
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50 clearChangesets();
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51 if (!m_uncommittedVisible) delete m_uncommitted;
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52 }
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53
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54 void HistoryWidget::clearChangesets()
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55 {
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56 foreach (Changeset *cs, m_changesets) delete cs;
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57 m_changesets.clear();
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58 }
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59
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60 void HistoryWidget::setCurrent(QStringList ids)
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61 {
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62 if (m_currentIds == ids) return;
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63 DEBUG << "HistoryWidget::setCurrent: " << ids.size() << " ids" << endl;
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64 m_currentIds.clear();
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65 foreach (QString id, ids) {
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66 m_currentIds.push_back(id);
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67 }
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68 updateNewAndCurrentItems();
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69 }
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70
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71 void HistoryWidget::showUncommittedChanges(bool show)
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72 {
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73 if (m_uncommittedVisible == show) return;
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74 m_uncommittedVisible = show;
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75 QGraphicsScene *scene = m_panned->scene();
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76 if (!scene) return;
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77 if (m_uncommittedVisible) {
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78 scene->addItem(m_uncommitted);
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79 } else {
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80 scene->removeItem(m_uncommitted);
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81 }
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82 }
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83
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84 void HistoryWidget::parseNewLog(QString log)
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85 {
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86 DEBUG << "HistoryWidget::parseNewLog: log has " << log.length() << " chars" << endl;
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87 Changesets csets = Changeset::parseChangesets(log);
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88 DEBUG << "HistoryWidget::parseNewLog: log has " << csets.size() << " changesets" << endl;
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89 replaceChangesets(csets);
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90 layoutAll();
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91 }
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92
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93 void HistoryWidget::parseIncrementalLog(QString log)
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94 {
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95 DEBUG << "HistoryWidget::parseIncrementalLog: log has " << log.length() << " chars" << endl;
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96 Changesets csets = Changeset::parseChangesets(log);
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97 DEBUG << "HistoryWidget::parseIncrementalLog: log has " << csets.size() << " changesets" << endl;
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98 if (!csets.empty()) {
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99 addChangesets(csets);
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100 layoutAll();
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101 }
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102 }
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103
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104 void HistoryWidget::replaceChangesets(Changesets csets)
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105 {
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106 QSet<QString> oldIds;
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107 foreach (Changeset *cs, m_changesets) {
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108 oldIds.insert(cs->id());
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109 }
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110
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111 QSet<QString> newIds;
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112 foreach (Changeset *cs, csets) {
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113 if (!oldIds.contains(cs->id())) {
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114 newIds.insert(cs->id());
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115 }
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116 }
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117
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118 if (newIds.size() == csets.size()) {
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119 // completely new set, unrelated to the old: don't mark new
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120 m_newIds.clear();
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121 } else {
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122 m_newIds = newIds;
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123 }
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124
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125 clearChangesets();
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126 m_changesets = csets;
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127 }
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128
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129 void HistoryWidget::addChangesets(Changesets csets)
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130 {
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131 m_newIds.clear();
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132
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133 if (csets.empty()) return;
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134
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135 foreach (Changeset *cs, csets) {
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136 m_newIds.insert(cs->id());
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137 }
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138
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139 DEBUG << "addChangesets: " << csets.size() << " new changesets" << endl;
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140
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141 csets << m_changesets;
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142 m_changesets = csets;
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143 }
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144
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145 void HistoryWidget::layoutAll()
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146 {
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147 setChangesetParents();
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148
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149 ChangesetScene *scene = new ChangesetScene();
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150 ChangesetItem *tipItem = 0;
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151
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152 QGraphicsScene *oldScene = m_panned->scene();
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153
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154 // detach m_uncommitted from old scene so it doesn't get deleted
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155 if (oldScene && (m_uncommitted->scene() == oldScene)) {
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156 oldScene->removeItem(m_uncommitted);
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157 }
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158
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159 m_panned->setScene(0);
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160 m_panner->setScene(0);
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161
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162 delete oldScene;
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163
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164 if (!m_changesets.empty()) {
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165 Grapher g(scene);
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166 try {
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167 g.layout(m_changesets);
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168 } catch (std::string s) {
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169 std::cerr << "Internal error: Layout failed: " << s << std::endl;
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170 }
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171 tipItem = g.getItemFor(m_changesets[0]);
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172 DEBUG << "tipItem is " << tipItem << " for tip changeset "
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173 << m_changesets[0]->id() << endl;
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174 }
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175
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176 if (m_uncommittedVisible) {
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177 scene->addItem(m_uncommitted);
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178 }
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179
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180 m_panned->setScene(scene);
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181 m_panner->setScene(scene);
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182
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183 updateNewAndCurrentItems();
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184
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185 if (m_uncommittedVisible) {
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186 m_uncommitted->ensureVisible();
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187 } else if (tipItem) {
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188 DEBUG << "asking tip item to be visible" << endl;
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189 tipItem->ensureVisible();
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190 }
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191 }
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192
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193 void HistoryWidget::setChangesetParents()
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194 {
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195 for (int i = 0; i < m_changesets.size(); ++i) {
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196 Changeset *cs = m_changesets[i];
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197 // Need to reset this, as Grapher::layout will recalculate it
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198 // and we don't want to end up with twice the children for
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199 // each parent...
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200 cs->setChildren(QStringList());
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201 }
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202 for (int i = 0; i+1 < m_changesets.size(); ++i) {
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203 Changeset *cs = m_changesets[i];
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204 if (cs->parents().empty()) {
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205 QStringList list;
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206 list.push_back(m_changesets[i+1]->id());
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207 cs->setParents(list);
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208 }
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209 }
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210 }
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211
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212 void HistoryWidget::updateNewAndCurrentItems()
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213 {
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214 QGraphicsScene *scene = m_panned->scene();
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215 if (!scene) return;
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216
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217 QList<QGraphicsItem *> items = scene->items();
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218 foreach (QGraphicsItem *it, items) {
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219
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220 ChangesetItem *csit = dynamic_cast<ChangesetItem *>(it);
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221 if (!csit) continue;
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222
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223 QString id = csit->getChangeset()->id();
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224
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225 bool current = m_currentIds.contains(id);
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226 if (current) {
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227 DEBUG << "id " << id << " is current" << endl;
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228 }
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229 bool newid = m_newIds.contains(id);
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230 if (newid) {
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231 DEBUG << "id " << id << " is new" << endl;
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232 }
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233
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234 csit->setCurrent(current);
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235 csit->setNew(newid);
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236
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237 if (current) {
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238 m_uncommitted->setRow(csit->row() - 1);
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239 m_uncommitted->setColumn(csit->column());
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240 m_uncommitted->setWide(csit->isWide());
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241 m_uncommitted->setBranch(csit->getChangeset()->branch());
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242 }
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243 }
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244 }
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