408 lines
13 KiB
C++
408 lines
13 KiB
C++
#include "./fieldmodel.h"
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#ifdef PASSWORD_MANAGER_UNDO_SUPPORT
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#include "../gui/undocommands.h"
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#endif
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#include <passwordfile/io/field.h>
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#include <QMimeData>
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#include <QStringList>
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#include <memory>
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using namespace std;
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using namespace Io;
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namespace QtGui {
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/*!
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* \class FieldModel
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* \brief The FieldModel class provides a model interface for the fields of an AccountEntry.
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*
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* When building the Qt Widgets GUI, the model also supports Qt Widgets' undo framework.
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* \sa http://qt-project.org/doc/qt-5/qabstracttablemodel.html
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* \sa http://qt-project.org/doc/qt-5/qundo.html
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*/
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/*!
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* \brief Constructs a new field model.
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*/
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FieldModel::FieldModel(QObject *parent)
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: QAbstractTableModel(parent)
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, m_accountEntry(nullptr)
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, m_fields(nullptr)
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, m_passwordVisibility(PasswordVisibility::OnlyWhenEditing)
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{
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}
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#ifdef PASSWORD_MANAGER_UNDO_SUPPORT
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/*!
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* \brief Constructs a new field model with the specified \a undoStack.
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*
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* This constructor is only available when PASSWORD_MANAGER_GUI_QTWIDGETS is defined.
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*/
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FieldModel::FieldModel(QUndoStack *undoStack, QObject *parent)
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: QAbstractTableModel(parent)
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, StackSupport(undoStack)
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, m_accountEntry(nullptr)
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, m_fields(nullptr)
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{
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}
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#endif
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QHash<int, QByteArray> FieldModel::roleNames() const
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{
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static const QHash<int, QByteArray> roles{
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{ FieldModelRoles::FieldTypeRole, "fieldType" },
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{ FieldModelRoles::Key, "key" },
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{ FieldModelRoles::Value, "value" },
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{ FieldModelRoles::IsPassword, "isPassword" },
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{ FieldModelRoles::AlwaysActualValue, "actualValue" },
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{ FieldModelRoles::IsLastRow, "isLastRow" },
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};
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return roles;
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}
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/*!
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* \brief Sets the account entry. Causes a model reset.
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*
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* The \a entry might be nullptr.
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* The caller keeps the ownership and should not destroy the \a entry as long it is assigned.
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*/
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void FieldModel::setAccountEntry(AccountEntry *entry)
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{
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if (entry == m_accountEntry) {
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return;
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}
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beginResetModel();
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if ((m_accountEntry = entry)) {
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m_fields = &entry->fields();
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} else {
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m_fields = nullptr;
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}
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endResetModel();
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}
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inline QVariant FieldModel::passwordValue(const QModelIndex &index, int role) const
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{
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return (m_passwordVisibility == PasswordVisibility::Always || role == Qt::EditRole
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|| (*m_fields)[static_cast<size_t>(index.row())].type() != FieldType::Password)
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? QString::fromStdString((*m_fields)[static_cast<size_t>(index.row())].value())
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: QString((*m_fields)[static_cast<size_t>(index.row())].value().size(), QChar(0x2022));
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}
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QVariant FieldModel::data(const QModelIndex &index, int role) const
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{
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if (!index.isValid() || !m_fields || index.row() < 0) {
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return QVariant();
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}
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// return data for existent field
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if (static_cast<size_t>(index.row()) < m_fields->size()) {
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switch (role) {
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case Qt::DisplayRole:
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case Qt::EditRole:
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switch (index.column()) {
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case 0:
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return QString::fromStdString((*m_fields)[static_cast<size_t>(index.row())].name());
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case 1:
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return passwordValue(index, role);
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default:;
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}
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break;
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case FieldTypeRole:
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return static_cast<int>((*m_fields)[static_cast<size_t>(index.row())].type());
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case Key:
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return QString::fromStdString((*m_fields)[static_cast<size_t>(index.row())].name());
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case Value:
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return passwordValue(index, role);
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case AlwaysActualValue:
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return QString::fromStdString((*m_fields)[static_cast<size_t>(index.row())].value());
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case IsPassword:
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return (*m_fields)[static_cast<size_t>(index.row())].type() == FieldType::Password;
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case IsLastRow:
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return false;
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default:;
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}
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} else if (static_cast<size_t>(index.row()) == m_fields->size()) {
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// return data for empty field at the end which enables the user to append fields
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switch (role) {
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case Qt::DisplayRole:
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case Qt::EditRole:
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switch (index.column()) {
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case 0:
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return QString();
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case 1:
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return QString();
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default:;
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}
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break;
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case Key:
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case Value:
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case AlwaysActualValue:
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return QString();
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case IsPassword:
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return false;
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case IsLastRow:
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return true;
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default:;
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}
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}
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return QVariant();
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}
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QMap<int, QVariant> FieldModel::itemData(const QModelIndex &index) const
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{
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static const auto roleMap = [this, index] {
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QMap<int, QVariant> roleMap;
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for (const auto role : initializer_list<int>{ Qt::EditRole, FieldTypeRole }) {
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const auto variantData(data(index, role));
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if (variantData.isValid()) {
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roleMap.insert(role, variantData);
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}
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}
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return roleMap;
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}();
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return roleMap;
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}
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bool FieldModel::setData(const QModelIndex &index, const QVariant &value, int role)
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{
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#ifdef PASSWORD_MANAGER_UNDO_SUPPORT
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if (undoStack()) {
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return push(make_unique<FieldModelSetValueCommand>(this, index, value, role));
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}
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#endif
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if (!index.isValid() || !m_fields || index.row() < 0) {
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return false;
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}
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QVector<int> roles;
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if (static_cast<size_t>(index.row()) < m_fields->size()) {
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// set data for existing field
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switch (role) {
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case Qt::EditRole:
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switch (index.column()) {
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case 0:
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m_fields->at(static_cast<size_t>(index.row())).setName(value.toString().toStdString());
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roles << Qt::DisplayRole << Qt::EditRole << Key;
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break;
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case 1:
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m_fields->at(static_cast<size_t>(index.row())).setValue(value.toString().toStdString());
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roles << Qt::DisplayRole << Qt::EditRole << Value << AlwaysActualValue;
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break;
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default:;
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}
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break;
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case FieldTypeRole: {
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bool ok;
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int fieldType = value.toInt(&ok);
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if (ok && Field::isValidType(fieldType)) {
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m_fields->at(static_cast<size_t>(index.row())).setType(static_cast<FieldType>(fieldType));
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roles << Qt::DisplayRole << Value << FieldTypeRole << IsPassword;
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}
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break;
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}
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case Key:
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m_fields->at(static_cast<size_t>(index.row())).setName(value.toString().toStdString());
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roles << Qt::DisplayRole << Qt::EditRole << Key;
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break;
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case Value:
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case AlwaysActualValue:
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m_fields->at(static_cast<size_t>(index.row())).setValue(value.toString().toStdString());
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roles << Qt::DisplayRole << Qt::EditRole << Value << AlwaysActualValue;
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break;
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case IsPassword:
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m_fields->at(static_cast<size_t>(index.row())).setType(value.toBool() ? FieldType::Password : FieldType::Normal);
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roles << Qt::DisplayRole << Value << FieldTypeRole << IsPassword;
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break;
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default:;
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}
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// remove last field if empty, showing an empty field at the end to enabled appending new rows is provided by the data method
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if (!roles.isEmpty() && static_cast<size_t>(index.row()) == m_fields->size() - 1
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&& m_fields->at(static_cast<size_t>(index.row())).isEmpty()) {
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beginRemoveRows(index.parent(), index.row(), index.row());
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m_fields->pop_back();
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endRemoveRows();
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}
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} else if (static_cast<size_t>(index.row()) == m_fields->size() && !value.toString().isEmpty()) {
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// set data for a new field emplaced at the end of the field list
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switch (role) {
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case Qt::DisplayRole:
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case Qt::EditRole:
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switch (index.column()) {
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case 0:
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beginInsertRows(index.parent(), rowCount(), rowCount());
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m_fields->emplace_back(m_accountEntry);
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m_fields->back().setName(value.toString().toStdString());
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endInsertRows();
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roles << Qt::DisplayRole << Qt::EditRole << IsLastRow;
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break;
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case 1:
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beginInsertRows(index.parent(), rowCount(), rowCount());
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m_fields->emplace_back(m_accountEntry);
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m_fields->back().setValue(value.toString().toStdString());
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endInsertRows();
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roles << Qt::DisplayRole << Qt::EditRole << IsLastRow;
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break;
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default:;
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}
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break;
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default:;
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}
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}
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// return false if nothing could be changed
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if (roles.isEmpty()) {
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return false;
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}
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// emit data changed signal on sucess
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emit dataChanged(index, index, roles);
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return true;
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}
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Qt::ItemFlags FieldModel::flags(const QModelIndex &index) const
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{
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return QAbstractTableModel::flags(index) | Qt::ItemIsEditable | Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled;
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}
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QVariant FieldModel::headerData(int section, Qt::Orientation orientation, int role) const
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{
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switch (orientation) {
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case Qt::Horizontal:
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switch (role) {
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case Qt::DisplayRole:
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switch (section) {
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case 0:
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return tr("Name");
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case 1:
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return tr("Value");
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default:;
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}
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break;
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default:;
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}
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break;
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default:;
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}
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return QVariant();
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}
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int FieldModel::rowCount(const QModelIndex &parent) const
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{
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return (!parent.isValid() && m_fields) ? m_fields->size() + 1 : 0;
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}
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int FieldModel::columnCount(const QModelIndex &parent) const
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{
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return !parent.isValid() ? 2 : 0;
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}
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bool FieldModel::insertRows(int row, int count, const QModelIndex &parent)
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{
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#ifdef PASSWORD_MANAGER_UNDO_SUPPORT
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if (undoStack()) {
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return push(make_unique<FieldModelInsertRowsCommand>(this, row, count));
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}
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#endif
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if (parent.isValid() || row < 0 || count <= 0 || static_cast<size_t>(row) > m_fields->size()) {
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return false;
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}
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beginInsertRows(parent, row, row + count - 1);
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m_fields->insert(m_fields->begin() + row, static_cast<size_t>(count), Field(m_accountEntry));
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endInsertRows();
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return true;
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}
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bool FieldModel::removeRows(int row, int count, const QModelIndex &parent)
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{
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#ifdef PASSWORD_MANAGER_UNDO_SUPPORT
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if (undoStack()) {
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return push(make_unique<FieldModelRemoveRowsCommand>(this, row, count));
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}
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#endif
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if (parent.isValid() || row < 0 || count <= 0 || static_cast<size_t>(row + count) > m_fields->size()) {
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return false;
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}
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beginRemoveRows(parent, row, row + count - 1);
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m_fields->erase(m_fields->begin() + row, m_fields->begin() + row + count);
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endRemoveRows();
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return true;
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}
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bool FieldModel::moveRows(const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild)
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{
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// FIXME: implement an undo/redo command
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// validate input parameter
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if (sourceParent.isValid() || destinationParent.isValid() || sourceRow < 0 || count <= 0 || destinationChild < 0
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|| static_cast<size_t>(sourceRow + count) > m_fields->size() || static_cast<size_t>(destinationChild) >= m_fields->size()
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|| (destinationChild >= sourceRow && destinationChild < (sourceRow + count))) {
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return false;
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}
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// begin the move
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if (destinationChild > sourceRow) {
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// move rows down: the third param is still counted in the initial array!
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beginMoveRows(sourceParent, sourceRow, sourceRow + count - 1, destinationParent, destinationChild + count);
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} else {
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// move rows up
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beginMoveRows(sourceParent, sourceRow, sourceRow + count - 1, destinationParent, destinationChild);
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}
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// reserve space for temporary copies (FIXME: possible to avoid this?)
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m_fields->reserve(m_fields->size() + static_cast<size_t>(count));
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vector<Io::Field> tmp(static_cast<size_t>(count));
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// move rows to temporary array
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move(m_fields->begin() + sourceRow, m_fields->begin() + sourceRow + count, tmp.begin());
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// erase slots of rows to be moved
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m_fields->erase(m_fields->begin() + sourceRow, m_fields->begin() + sourceRow + count);
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// insert rows again at their new position
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m_fields->insert(m_fields->begin() + destinationChild, tmp.begin(), tmp.end());
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endMoveRows();
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return true;
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}
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bool FieldModel::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
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{
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if (!QAbstractTableModel::dropMimeData(data, action, row, column, parent) && data->hasText()) {
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return setData(parent, data->text(), Qt::EditRole);
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}
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return false;
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}
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QStringList FieldModel::mimeTypes() const
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{
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return QAbstractTableModel::mimeTypes() << QStringLiteral("text/plain");
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}
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QMimeData *FieldModel::mimeData(const QModelIndexList &indices) const
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{
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QMimeData *const data = QAbstractTableModel::mimeData(indices);
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if (indices.isEmpty()) {
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return data;
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}
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QStringList result;
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result.reserve(indices.size());
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for (const QModelIndex &index : indices) {
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result << index.data(Qt::EditRole).toString();
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}
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data->setText(result.join(QChar('\n')));
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return data;
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}
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/*!
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* \brief Returns the field for the specified row.
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*
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* Might be nullptr if no account entry is assigned or if the row is out of range.
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*/
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const Field *FieldModel::field(size_t row) const
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{
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if (m_fields && row < m_fields->size()) {
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return &(*m_fields)[row];
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}
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return nullptr;
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}
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} // namespace QtGui
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