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annotate src/metadataview.cpp @ 24:6b9b5efcd7f4

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Add missing copyright header
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 May 2015 17:47:57 +0200
parents 0a08c1c2531a
children 64a51a42c01f
rev   line source
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1 /* Copyright (C) 2014 by Intevation GmbH
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2 *
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3 * This file is Free Software under the GNU GPL (v>=2)
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4 * and comes with ABSOLUTELY NO WARRANTY!
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5 * See LICENSE.txt for details.
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6 */
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7 #include "metadataview.h"
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8 #include "qxtcsvmodel.h"
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9 #include "filterwidget.h"
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10
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11 #include <QTextCodec>
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12 #include <QTableView>
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13 #include <QSortFilterProxyModel>
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14 #include <QVBoxLayout>
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15 #include <QLabel>
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16 #include <QDebug>
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17 #include <QModelIndex>
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18 #include <QHeaderView>
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19 #include <QItemSelectionModel>
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20
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21 MetaDataView::MetaDataView(QWidget *parent, Qt::WindowFlags f) :
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22 QWidget(parent, f) {
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23 /* Create models */
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24 mSortModel = new QSortFilterProxyModel;
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25 mCSVModel = new QxtCsvModel;
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26 setupGUI();
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27
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28 connect(mView->selectionModel(), &QItemSelectionModel::selectionChanged,
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29 this, &MetaDataView::viewSelectionChanged);
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30 connect(mSortModel, &QSortFilterProxyModel::dataChanged,
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31 this, &MetaDataView::dataChanged);
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32 return;
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33 }
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34
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35 void MetaDataView::setupGUI() {
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36 QVBoxLayout *baseLayout = new QVBoxLayout;
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37
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38 FilterWidget *filterWidget = new FilterWidget(mSortModel);
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39 baseLayout->addWidget(filterWidget);
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40
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41 mView = new QTableView;
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42 mView->setModel(mSortModel);
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43
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44 mView->horizontalHeader()->setStretchLastSection(true);
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45 mView->resizeColumnsToContents();
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46 // mView->setColumnWidth(0, 60);
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47 mView->setSelectionBehavior(QAbstractItemView::SelectRows);
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48 mView->setSelectionMode(QAbstractItemView::SingleSelection);
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49 mView->setSortingEnabled(true);
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50 mView->setEditTriggers(QAbstractItemView::NoEditTriggers);
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51
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52 baseLayout->addWidget(mView);
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53
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54 setLayout(baseLayout);
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55 }
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56
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57 QString MetaDataView::parseMetaData(const QString& filePath) {
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58 mCSVModel->setSource(filePath, true, ';', QTextCodec::codecForName("UTF8"));
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59 if (!mCSVModel->rowCount()) {
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60 return tr("Failed to parse file: '%1'").arg(filePath);
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61 }
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62
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63 mSortModel->setSourceModel(mCSVModel);
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64 qDebug() << "Parsed: " << mCSVModel->rowCount() << " rows.";
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65 return QString();
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66 }
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67
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68 void MetaDataView::dataChanged()
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69 {
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70 QItemSelectionModel *selection = mView->selectionModel();
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71 QModelIndexList selected = selection->selectedIndexes();
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72
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73 qDebug() << "Data Changed.";
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74 if (selected.isEmpty()) {
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75 /* Nothing selected still we need to emit this signal to update
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76 * the viewer otherwise selection changed handles it. */
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77 emit selectionChanged(QString(), 0, mSortModel->rowCount() - 1,
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78 QDateTime());
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79 }
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80 }
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81
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82 void MetaDataView::viewSelectionChanged(const QItemSelection& selected,
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83 const QItemSelection& deselected) {
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84 if (selected.indexes().isEmpty()) {
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85 /* Nothing selected */
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86 return;
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87 }
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88 /* One row selected */
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89 Q_ASSERT(selected.indexes().count() == mCSVModel->columnCount());
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90 const QModelIndex idx = selected.indexes()[0];
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91 const QString dateString = selected.indexes()[1].data().toString();
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92 bool ok;
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93 qint64 secondsSinceEpoch = dateString.toLongLong(&ok);
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94 if (!ok) {
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95 // TODO emit error
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96 qDebug() << "Unparsable date.";
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97 }
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98 QDateTime timestamp = QDateTime::fromMSecsSinceEpoch(secondsSinceEpoch * 1000);
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99 emit selectionChanged(idx.data().toString(), idx.row(), mSortModel->rowCount() - 1,
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100 timestamp);
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101 qDebug() << "Selection changed: " << idx.data();
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102 }
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103
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104 void MetaDataView::selectRow(int row) {
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105 QItemSelectionModel *selection = mView->selectionModel();
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106 if (!mSortModel->hasIndex(row, 0)) {
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107 qDebug() << "Invalid row: " << row;
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108 return;
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109 }
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110 QModelIndex newIdx = mSortModel->index(row, 0);
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111 selection->select(newIdx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
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112 }
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113
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114 void MetaDataView::selectPrevRow() {
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115 QItemSelectionModel *selection = mView->selectionModel();
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116 QModelIndexList selected = selection->selectedIndexes();
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117 int row = 0,
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118 col = 0;
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119 if (selected.isEmpty()) {
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120 qDebug() << "Selection empty. Start at row 0";
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121 if (!mSortModel->hasIndex(row, col)) {
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122 qDebug() << "Empty model. Failed to advance.";
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123 return;
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124 }
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125 } else {
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126 QModelIndex old = selection->selectedIndexes().first();
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127 if (!mSortModel->hasIndex(old.row() - 1, old.column())) {
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128 qDebug() << "No less rows.";
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129 return;
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130 }
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131 row = old.row() - 1;
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132 col = old.column();
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133 }
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134 QModelIndex newIdx = mSortModel->index(row, col);
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135 selection->select(newIdx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
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136 }
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137
2
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138 void MetaDataView::selectNextRow() {
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139 QItemSelectionModel *selection = mView->selectionModel();
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140 QModelIndexList selected = selection->selectedIndexes();
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141 int row = 0,
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142 col = 0;
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143 if (selected.isEmpty()) {
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144 qDebug() << "Selection empty. Start at row 0";
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145 if (!mSortModel->hasIndex(row, col)) {
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146 qDebug() << "Empty model. Failed to advance.";
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147 return;
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148 }
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149 } else {
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150 QModelIndex old = selection->selectedIndexes().first();
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151 if (!mSortModel->hasIndex(old.row() + 1, old.column())) {
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152 qDebug() << "No more rows.";
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153 return;
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154 }
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155 row = old.row() + 1;
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156 col = old.column();
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157 }
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158 QModelIndex newIdx = mSortModel->index(row, col);
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159 selection->select(newIdx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
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160 }
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