Initial commit based on GenericQtClient v0.3.0

UIs/GenericWidgets/views/itemdetailmapper.cpp

@@ -0,0 +1,160 @@
+#include "itemdetailmapper.h"
+
+#include <QAbstractItemModel>
+#include <QDataWidgetMapper>
+#include <QGridLayout>
+#include <QJsonArray>
+#include <QJsonObject>
+#include <QLabel>
+#include <QLineEdit>
+#include <QPushButton>
+#include <QSpinBox>
+#include <QTableView>
+#include "model/metadata.h"
+
+ItemDetailMapper::ItemDetailMapper(QWidget* parent)
+    : QWidget{parent} {
+  /// model mapping
+  m_mapper = std::make_unique<QDataWidgetMapper>(this);
+  /// BUG: If multiple columns are changed not all changes are applied.
+  ///     Multiple changes are set individually by calling setData().
+  ///     Probably due to a conflicting dataChanged signal for too many roles&columns the data of
+  ///     the remaining columns is reset before setData is called.
+  ///     And a manual submit would also create multiple undo steps anyway.
+  /// Workaround: ManualSubmit -> AutoSubmit
+  // m_mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
+  m_mapper->setSubmitPolicy(QDataWidgetMapper::AutoSubmit);
+
+  /// model mapping buttons
+  m_nextButton     = new QPushButton(tr("Ne&xt"));
+  m_previousButton = new QPushButton(tr("&Previous"));
+
+  connect(m_previousButton, &QAbstractButton::clicked, this, &ItemDetailMapper::toPrevious);
+  connect(m_nextButton, &QAbstractButton::clicked, this, &ItemDetailMapper::toNext);
+
+  /// the individual widgets
+  // REFACTOR deduce label names and types from meta data & use a factory
+  m_nameLabel = new QLabel("&Name");
+  m_nameEdit  = new QLineEdit();
+  m_nameLabel->setBuddy(m_nameEdit);
+
+  m_descriptionLabel = new QLabel("&Description");
+  m_descriptionEdit  = new QLineEdit();
+  m_descriptionLabel->setBuddy(m_descriptionEdit);
+
+  m_infoLabel = new QLabel("&Info");
+  m_infoEdit  = new QLineEdit();
+  m_infoLabel->setBuddy(m_infoEdit);
+
+  m_amountLabel = new QLabel("&Amount");
+  m_amountBox   = new QSpinBox();
+  m_amountBox->setMaximum(1000);
+  m_amountLabel->setBuddy(m_amountBox);
+
+  m_factorLabel = new QLabel("&Factor");
+  m_factorBox   = new QDoubleSpinBox();
+  m_factorBox->setMaximum(1000);
+  m_factorLabel->setBuddy(m_factorBox);
+
+  QGridLayout* layout = new QGridLayout();
+  layout->addWidget(m_nameLabel, 0, 0, 1, 1);
+  layout->addWidget(m_nameEdit, 0, 1, 1, 1);
+  layout->addWidget(m_descriptionLabel, 1, 0, 1, 1);
+  layout->addWidget(m_descriptionEdit, 1, 1, 1, 1);
+  layout->addWidget(m_infoLabel, 2, 0, 1, 1);
+  layout->addWidget(m_infoEdit, 2, 1, 1, 1);
+  layout->addWidget(m_amountLabel, 3, 0, 1, 1);
+  layout->addWidget(m_amountBox, 3, 1, 1, 1);
+  layout->addWidget(m_factorLabel, 4, 0, 1, 1);
+  layout->addWidget(m_factorBox, 4, 1, 1, 1);
+
+  layout->addWidget(m_previousButton, 5, 0, 1, 1);
+  layout->addWidget(m_nextButton, 5, 1, 1, 1);
+
+  setLayout(layout);
+}
+
+void ItemDetailMapper::setModelMappings(QTableView* tableView) {
+  qDebug() << "Setting model...";
+  m_tableView      = tableView;
+  m_model          = tableView->model();
+  m_selectionModel = tableView->selectionModel();
+
+  m_mapper->setModel(m_model);
+  m_mapper->addMapping(m_nameEdit, 0);
+  m_mapper->addMapping(m_descriptionEdit, 1);
+  m_mapper->addMapping(m_infoEdit, 2);
+  m_mapper->addMapping(m_amountBox, 3);
+  m_mapper->addMapping(m_factorBox, 4);
+
+  m_mapper->setCurrentIndex(m_selectionModel->currentIndex().row());
+
+  connect(m_model, &QAbstractItemModel::rowsInserted, this, &ItemDetailMapper::rowsInserted);
+  connect(m_model, &QAbstractItemModel::rowsRemoved, this, &ItemDetailMapper::rowsRemoved);
+  connect(m_selectionModel, &QItemSelectionModel::currentChanged, this,
+          &ItemDetailMapper::onCurrentIndexChanged);
+
+  updateButtons(m_selectionModel->currentIndex().row());
+}
+
+bool ItemDetailMapper::submit() { return m_mapper->submit(); }
+
+void ItemDetailMapper::revert() { m_mapper->revert(); }
+
+void ItemDetailMapper::onCurrentIndexChanged(const QModelIndex& current,
+                                             const QModelIndex& /*previous*/) {
+  if (!isEnabled()) {
+    setEnabled(true);
+  }
+  m_mapper->setCurrentModelIndex(current);
+  updateButtons(current.row());
+  emitContentChanged(current);
+}
+
+void ItemDetailMapper::rowsInserted(const QModelIndex& parent, int start, int end) {
+  updateButtons(m_mapper->currentIndex());
+}
+
+void ItemDetailMapper::rowsRemoved(const QModelIndex& parent, int start, int end) {
+  if (m_model->rowCount() == 0) {
+    setEnabled(false);
+
+    m_nameEdit->clear();
+    m_descriptionEdit->clear();
+    m_infoEdit->clear();
+    m_amountBox->clear();
+    m_factorBox->clear();
+  }
+
+  updateButtons(m_mapper->currentIndex());
+}
+
+void ItemDetailMapper::toPrevious() {
+  int currentRow            = m_selectionModel->currentIndex().row();
+  QModelIndex previousIndex = m_selectionModel->currentIndex().siblingAtRow(currentRow - 1);
+  if (previousIndex.isValid()) {
+    m_selectionModel->setCurrentIndex(previousIndex, QItemSelectionModel::ClearAndSelect);
+  }
+}
+
+void ItemDetailMapper::toNext() {
+  int currentRow        = m_selectionModel->currentIndex().row();
+  QModelIndex nextIndex = m_selectionModel->currentIndex().siblingAtRow(currentRow + 1);
+  if (nextIndex.isValid()) {
+    m_selectionModel->setCurrentIndex(nextIndex, QItemSelectionModel::ClearAndSelect);
+  }
+}
+
+void ItemDetailMapper::updateButtons(int row) {
+  m_previousButton->setEnabled(row > 0);
+  m_nextButton->setEnabled(row < m_model->rowCount() - 1);
+}
+
+void ItemDetailMapper::emitContentChanged(const QModelIndex& currentIndex) {
+  // BUG QR-Code isn't updated after changes through the ItemDetailMapper #18
+  QString toStringText = "";
+  if (currentIndex.isValid()) {
+    toStringText = currentIndex.data(ToStringRole).toString();
+  }
+  emit contentChanged(toStringText);
+}

UIs/GenericWidgets/views/itemdetailmapper.h

@@ -0,0 +1,67 @@
+#ifndef ITEMDETAILMAPPER_H
+#define ITEMDETAILMAPPER_H
+
+#include <QDataWidgetMapper>
+#include <QWidget>
+
+class QLabel;
+class QLineEdit;
+class QDoubleSpinBox;
+class QSpinBox;
+class QPushButton;
+class QAbstractItemModel;
+class QItemSelectionModel;
+class QTableView;
+
+class ItemDetailMapper : public QWidget {
+  Q_OBJECT
+ public:
+  explicit ItemDetailMapper(QWidget* parent = nullptr);
+
+  void setModelMappings(QTableView* tableView);
+
+  bool submit();
+  void revert();
+
+ signals:
+  void contentChanged(const QString text);
+
+ private slots:
+  void onCurrentIndexChanged(const QModelIndex& current, const QModelIndex& previous);
+  void rowsInserted(const QModelIndex& parent, int start, int end);
+  void rowsRemoved(const QModelIndex& parent, int start, int end);
+  void toPrevious();
+  void toNext();
+  void updateButtons(int row);
+  void emitContentChanged(const QModelIndex& currentIndex);
+
+ private:
+  /// *** members ***
+  /// Model stuff
+  QTableView* m_tableView               = nullptr;
+  QAbstractItemModel* m_model           = nullptr;
+  QItemSelectionModel* m_selectionModel = nullptr;
+
+  std::unique_ptr<QDataWidgetMapper> m_mapper;
+
+  /// GUI elements
+  QLabel* m_nameLabel   = nullptr;
+  QLineEdit* m_nameEdit = nullptr;
+
+  QLabel* m_descriptionLabel   = nullptr;
+  QLineEdit* m_descriptionEdit = nullptr;
+
+  QLabel* m_infoLabel   = nullptr;
+  QLineEdit* m_infoEdit = nullptr;
+
+  QLabel* m_amountLabel = nullptr;
+  QSpinBox* m_amountBox = nullptr;
+
+  QLabel* m_factorLabel       = nullptr;
+  QDoubleSpinBox* m_factorBox = nullptr;
+
+  QPushButton* m_nextButton;
+  QPushButton* m_previousButton;
+};
+
+#endif  // ITEMDETAILMAPPER_H