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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 m_uncommittedVisible = show;
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74 layoutAll();
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75 }
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76
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77 void HistoryWidget::parseNewLog(QString log)
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78 {
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79 DEBUG << "HistoryWidget::parseNewLog: log has " << log.length() << " chars" << endl;
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80 Changesets csets = Changeset::parseChangesets(log);
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81 DEBUG << "HistoryWidget::parseNewLog: log has " << csets.size() << " changesets" << endl;
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82 replaceChangesets(csets);
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83 layoutAll();
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84 }
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85
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86 void HistoryWidget::parseIncrementalLog(QString log)
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87 {
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88 DEBUG << "HistoryWidget::parseIncrementalLog: log has " << log.length() << " chars" << endl;
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89 Changesets csets = Changeset::parseChangesets(log);
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90 DEBUG << "HistoryWidget::parseIncrementalLog: log has " << csets.size() << " changesets" << endl;
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91 if (!csets.empty()) {
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92 addChangesets(csets);
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93 layoutAll();
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94 }
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95 }
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96
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97 void HistoryWidget::replaceChangesets(Changesets csets)
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98 {
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99 QSet<QString> oldIds;
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100 foreach (Changeset *cs, m_changesets) {
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101 oldIds.insert(cs->id());
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102 }
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103
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104 QSet<QString> newIds;
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105 foreach (Changeset *cs, csets) {
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106 if (!oldIds.contains(cs->id())) {
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107 newIds.insert(cs->id());
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108 }
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109 }
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110
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111 if (newIds.size() == csets.size()) {
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112 // completely new set, unrelated to the old: don't mark new
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113 m_newIds.clear();
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114 } else {
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115 m_newIds = newIds;
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116 }
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117
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118 clearChangesets();
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119 m_changesets = csets;
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120 }
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121
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122 void HistoryWidget::addChangesets(Changesets csets)
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123 {
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124 m_newIds.clear();
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125 foreach (Changeset *cs, csets) {
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126 m_newIds.insert(cs->id());
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127 }
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128
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129 csets << m_changesets;
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130 m_changesets = csets;
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131 }
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132
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133 void HistoryWidget::layoutAll()
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134 {
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135 setChangesetParents();
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136
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137 ChangesetScene *scene = new ChangesetScene();
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138 ChangesetItem *tipItem = 0;
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139
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140 if (!m_changesets.empty()) {
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141 Grapher g(scene);
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142 try {
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143 g.layout(m_changesets);
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144 } catch (std::string s) {
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145 std::cerr << "Internal error: Layout failed: " << s << std::endl;
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146 }
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147 tipItem = g.getItemFor(m_changesets[0]);
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148 DEBUG << "tipItem is " << tipItem << " for tip changeset "
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149 << m_changesets[0]->id() << endl;
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150 }
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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 if (m_uncommittedVisible) {
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159 scene->addItem(m_uncommitted);
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160 }
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161
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162 m_panned->setScene(scene);
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163 m_panner->setScene(scene);
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164
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165 if (oldScene) delete oldScene;
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166
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167 updateNewAndCurrentItems();
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168
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169 if (m_uncommittedVisible) {
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170 m_uncommitted->ensureVisible();
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171 } else if (tipItem) {
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172 DEBUG << "asking tip item to be visible" << endl;
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173 tipItem->ensureVisible();
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174 }
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175 }
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176
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177 void HistoryWidget::setChangesetParents()
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178 {
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179 for (int i = 0; i+1 < m_changesets.size(); ++i) {
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180 Changeset *cs = m_changesets[i];
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181 // Need to reset this, as Grapher::layout will recalculate it
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182 // and we don't want to end up with twice the children for
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183 // each parent...
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184 cs->setChildren(QStringList());
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185 if (cs->parents().empty()) {
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186 QStringList list;
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187 list.push_back(m_changesets[i+1]->id());
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188 cs->setParents(list);
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189 }
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190 }
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191 }
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192
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193 void HistoryWidget::updateNewAndCurrentItems()
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194 {
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195 QGraphicsScene *scene = m_panned->scene();
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196 if (!scene) return;
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197
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198 QList<QGraphicsItem *> items = scene->items();
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199 foreach (QGraphicsItem *it, items) {
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200
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201 ChangesetItem *csit = dynamic_cast<ChangesetItem *>(it);
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202 if (!csit) continue;
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203
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204 QString id = csit->getChangeset()->id();
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205
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206 bool current = m_currentIds.contains(id);
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207 if (current) {
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208 DEBUG << "id " << id << " is current" << endl;
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209 }
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210 bool newid = m_newIds.contains(id);
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211 if (newid) {
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212 DEBUG << "id " << id << " is new" << endl;
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213 }
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214
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215 csit->setCurrent(current);
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216 csit->setNew(newid);
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217
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218 if (current) {
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219 m_uncommitted->setRow(csit->row() - 1);
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220 m_uncommitted->setColumn(csit->column());
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221 m_uncommitted->setWide(csit->isWide());
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222 m_uncommitted->setBranch(csit->getChangeset()->branch());
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223 }
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224 }
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225 }
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