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annotate src/metadataview.cpp @ 25:64a51a42c01f

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Assign copyright correctly
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 May 2015 17:53:36 +0200
parents 6b9b5efcd7f4
children 4e16fbd10945
rev   line source
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1 /* Copyright (C) 2015 by ETH Zürich
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU GPL (v>=2)
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5 * and comes with ABSOLUTELY NO WARRANTY!
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6 * See LICENSE.txt for details.
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7 */
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8 #include "metadataview.h"
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9 #include "qxtcsvmodel.h"
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10 #include "filterwidget.h"
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11
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12 #include <QTextCodec>
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13 #include <QTableView>
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14 #include <QSortFilterProxyModel>
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15 #include <QVBoxLayout>
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16 #include <QLabel>
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17 #include <QDebug>
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18 #include <QModelIndex>
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19 #include <QHeaderView>
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20 #include <QItemSelectionModel>
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21
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22 MetaDataView::MetaDataView(QWidget *parent, Qt::WindowFlags f) :
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23 QWidget(parent, f) {
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24 /* Create models */
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25 mSortModel = new QSortFilterProxyModel;
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26 mCSVModel = new QxtCsvModel;
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27 setupGUI();
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28
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29 connect(mView->selectionModel(), &QItemSelectionModel::selectionChanged,
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30 this, &MetaDataView::viewSelectionChanged);
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31 connect(mSortModel, &QSortFilterProxyModel::dataChanged,
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32 this, &MetaDataView::dataChanged);
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33 return;
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34 }
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35
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36 void MetaDataView::setupGUI() {
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37 QVBoxLayout *baseLayout = new QVBoxLayout;
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38
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39 FilterWidget *filterWidget = new FilterWidget(mSortModel);
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40 baseLayout->addWidget(filterWidget);
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41
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42 mView = new QTableView;
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43 mView->setModel(mSortModel);
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44
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45 mView->horizontalHeader()->setStretchLastSection(true);
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46 mView->resizeColumnsToContents();
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47 // mView->setColumnWidth(0, 60);
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48 mView->setSelectionBehavior(QAbstractItemView::SelectRows);
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49 mView->setSelectionMode(QAbstractItemView::SingleSelection);
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50 mView->setSortingEnabled(true);
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51 mView->setEditTriggers(QAbstractItemView::NoEditTriggers);
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52
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53 baseLayout->addWidget(mView);
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54
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55 setLayout(baseLayout);
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56 }
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57
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58 QString MetaDataView::parseMetaData(const QString& filePath) {
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59 mCSVModel->setSource(filePath, true, ';', QTextCodec::codecForName("UTF8"));
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60 if (!mCSVModel->rowCount()) {
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61 return tr("Failed to parse file: '%1'").arg(filePath);
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62 }
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63
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64 mSortModel->setSourceModel(mCSVModel);
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65 qDebug() << "Parsed: " << mCSVModel->rowCount() << " rows.";
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66 return QString();
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67 }
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68
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69 void MetaDataView::dataChanged()
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70 {
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71 QItemSelectionModel *selection = mView->selectionModel();
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72 QModelIndexList selected = selection->selectedIndexes();
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73
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74 qDebug() << "Data Changed.";
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75 if (selected.isEmpty()) {
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76 /* Nothing selected still we need to emit this signal to update
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77 * the viewer otherwise selection changed handles it. */
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78 emit selectionChanged(QString(), 0, mSortModel->rowCount() - 1,
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79 QDateTime());
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80 }
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81 }
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82
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83 void MetaDataView::viewSelectionChanged(const QItemSelection& selected,
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84 const QItemSelection& deselected) {
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85 if (selected.indexes().isEmpty()) {
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86 /* Nothing selected */
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87 return;
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88 }
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89 /* One row selected */
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90 Q_ASSERT(selected.indexes().count() == mCSVModel->columnCount());
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91 const QModelIndex idx = selected.indexes()[0];
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92 const QString dateString = selected.indexes()[1].data().toString();
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93 bool ok;
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94 qint64 secondsSinceEpoch = dateString.toLongLong(&ok);
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95 if (!ok) {
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96 // TODO emit error
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97 qDebug() << "Unparsable date.";
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98 }
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99 QDateTime timestamp = QDateTime::fromMSecsSinceEpoch(secondsSinceEpoch * 1000);
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100 emit selectionChanged(idx.data().toString(), idx.row(), mSortModel->rowCount() - 1,
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101 timestamp);
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102 qDebug() << "Selection changed: " << idx.data();
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103 }
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104
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105 void MetaDataView::selectRow(int row) {
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106 QItemSelectionModel *selection = mView->selectionModel();
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107 if (!mSortModel->hasIndex(row, 0)) {
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108 qDebug() << "Invalid row: " << row;
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109 return;
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110 }
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111 QModelIndex newIdx = mSortModel->index(row, 0);
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112 selection->select(newIdx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
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113 }
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114
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115 void MetaDataView::selectPrevRow() {
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116 QItemSelectionModel *selection = mView->selectionModel();
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117 QModelIndexList selected = selection->selectedIndexes();
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118 int row = 0,
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119 col = 0;
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120 if (selected.isEmpty()) {
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121 qDebug() << "Selection empty. Start at row 0";
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122 if (!mSortModel->hasIndex(row, col)) {
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123 qDebug() << "Empty model. Failed to advance.";
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124 return;
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125 }
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126 } else {
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127 QModelIndex old = selection->selectedIndexes().first();
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128 if (!mSortModel->hasIndex(old.row() - 1, old.column())) {
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129 qDebug() << "No less rows.";
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130 return;
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131 }
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132 row = old.row() - 1;
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133 col = old.column();
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134 }
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135 QModelIndex newIdx = mSortModel->index(row, col);
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136 selection->select(newIdx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
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137 }
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138
2
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139 void MetaDataView::selectNextRow() {
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140 QItemSelectionModel *selection = mView->selectionModel();
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141 QModelIndexList selected = selection->selectedIndexes();
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142 int row = 0,
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143 col = 0;
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144 if (selected.isEmpty()) {
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145 qDebug() << "Selection empty. Start at row 0";
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146 if (!mSortModel->hasIndex(row, col)) {
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147 qDebug() << "Empty model. Failed to advance.";
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148 return;
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149 }
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150 } else {
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151 QModelIndex old = selection->selectedIndexes().first();
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152 if (!mSortModel->hasIndex(old.row() + 1, old.column())) {
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153 qDebug() << "No more rows.";
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154 return;
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155 }
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156 row = old.row() + 1;
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157 col = old.column();
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158 }
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159 QModelIndex newIdx = mSortModel->index(row, col);
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160 selection->select(newIdx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
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161 }
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