passwordmanager/model/fieldmodel.cpp

339 lines
10 KiB
C++

#include "./fieldmodel.h"
#ifdef PASSWORD_MANAGER_GUI_QTWIDGETS
# include "./gui/undocommands.h"
#endif
#include <passwordfile/io/field.h>
#include <QMimeData>
#include <QStringList>
using namespace std;
using namespace Io;
namespace QtGui {
/*!
* \class FieldModel
* \brief The FieldModel class provides a model interface for the fields of an AccountEntry.
*
* When building the Qt Widgets GUI, the model also supports Qt Widgets' undo framework.
* \sa http://qt-project.org/doc/qt-5/qabstracttablemodel.html
* \sa http://qt-project.org/doc/qt-5/qundo.html
*/
/*!
* \brief Constructs a new field model.
*/
FieldModel::FieldModel(QObject *parent) :
QAbstractTableModel(parent),
m_accountEntry(nullptr),
m_fields(nullptr),
m_passwordVisibility(PasswordVisibility::OnlyWhenEditing)
{}
#ifdef PASSWORD_MANAGER_GUI_QTWIDGETS
/*!
* \brief Constructs a new field model with the specified \a undoStack.
*
* This constructor is only available when PASSWORD_MANAGER_GUI_QTWIDGETS is defined.
*/
FieldModel::FieldModel(QUndoStack *undoStack, QObject *parent) :
QAbstractTableModel(parent),
StackSupport(undoStack),
m_accountEntry(nullptr),
m_fields(nullptr)
{}
#endif
/*!
* \brief Sets the account entry. Causes a model reset.
*
* The \a entry might be nullptr.
* The caller keeps the ownership and should not destroy the \a entry as long it is assigned.
*/
void FieldModel::setAccountEntry(AccountEntry *entry)
{
if(entry != m_accountEntry) {
beginResetModel();
if((m_accountEntry = entry)) {
m_fields = &entry->fields();
} else {
m_fields = nullptr;
}
endResetModel();
}
}
QVariant FieldModel::data(const QModelIndex &index, int role) const
{
if(index.isValid() && m_fields && index.row() >= 0) {
// return data for existent field
if(static_cast<size_t>(index.row()) < m_fields->size()) {
switch(role) {
case Qt::DisplayRole:
case Qt::EditRole:
switch(index.column()) {
case 0:
return QString::fromStdString(m_fields->at(index.row()).name());
case 1:
return (m_passwordVisibility == PasswordVisibility::Always
|| role == Qt::EditRole
|| m_fields->at(index.row()).type() != FieldType::Password)
? QString::fromStdString(m_fields->at(index.row()).value())
: QString(m_fields->at(index.row()).value().size(), QChar(0x2022));
default:
;
}
break;
case FieldTypeRole:
return static_cast<int>(m_fields->at(index.row()).type());
default:
;
}
// return data for empty field at the end which enables the user to append fields
} else if(static_cast<size_t>(index.row()) == m_fields->size()) {
switch(role) {
case Qt::DisplayRole:
case Qt::EditRole:
switch(index.column()) {
case 0:
return QString();
case 1:
return QString();
default:
;
}
break;
default:
;
}
}
}
return QVariant();
}
QMap<int, QVariant> FieldModel::itemData(const QModelIndex &index) const
{
static int roles[] = {Qt::EditRole, FieldTypeRole};
QMap<int, QVariant> roleMap;
for(int role : roles) {
QVariant variantData = data(index, role);
if (variantData.isValid()) {
roleMap.insert(role, variantData);
}
}
return roleMap;
}
bool FieldModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
#if PASSWORD_MANAGER_GUI_QTWIDGETS
if(undoStack()) {
return push(new FieldModelSetValueCommand(this, index, value, role));
}
#endif
QVector<int> roles;
if(index.isValid() && m_fields && index.row() >= 0) {
// set data for existing field
if(static_cast<size_t>(index.row()) < m_fields->size()) {
switch(role) {
case Qt::EditRole:
switch(index.column()) {
case 0:
m_fields->at(index.row()).setName(value.toString().toStdString());
roles << role;
break;
case 1:
m_fields->at(index.row()).setValue(value.toString().toStdString());
roles << role;
break;
default:
;
}
break;
case FieldTypeRole: {
bool ok;
int fieldType = value.toInt(&ok);
if(ok && Field::isValidType(fieldType)) {
roles << role;
m_fields->at(index.row()).setType(static_cast<FieldType>(fieldType));
}
break;
} default:
;
}
// remove last field if empty, showing an empty field at the end to enabled appending new rows is provided by the data method
if(!roles.isEmpty() && static_cast<size_t>(index.row()) == m_fields->size() - 1 && m_fields->at(index.row()).isEmpty()) {
beginRemoveRows(index.parent(), index.row(), index.row());
m_fields->pop_back();
endRemoveRows();
}
// set data for a new field emplaced at the end of the field list
} else if(static_cast<size_t>(index.row()) == m_fields->size() && !value.toString().isEmpty()) {
switch(role) {
case Qt::DisplayRole:
case Qt::EditRole:
switch(index.column()) {
case 0:
beginInsertRows(index.parent(), rowCount(), rowCount());
m_fields->emplace_back(m_accountEntry);
m_fields->back().setName(value.toString().toStdString());
endInsertRows();
roles << role;
break;
case 1:
beginInsertRows(index.parent(), rowCount(), rowCount());
m_fields->emplace_back(m_accountEntry);
m_fields->back().setValue(value.toString().toStdString());
endInsertRows();
roles << role;
break;
default:
;
}
break;
default:
;
}
}
}
// return false if nothing could be changed
if(roles.isEmpty()) {
return false;
} else {
// some roles affect other roles
switch(role) {
case Qt::EditRole:
roles << Qt::DisplayRole;
break;
case FieldTypeRole:
roles << Qt::DisplayRole << Qt::EditRole;
break;
default:
;
}
}
// emit data changed signal on sucess
emit dataChanged(index, index, roles);
return true;
}
Qt::ItemFlags FieldModel::flags(const QModelIndex &index) const
{
return QAbstractTableModel::flags(index) | Qt::ItemIsEditable | Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled;
}
QVariant FieldModel::headerData(int section, Qt::Orientation orientation, int role) const
{
switch(orientation) {
case Qt::Horizontal:
switch(role) {
case Qt::DisplayRole:
switch(section) {
case 0:
return tr("Name");
case 1:
return tr("Value");
default:
;
}
break;
default:
;
}
break;
default:
;
}
return QVariant();
}
int FieldModel::rowCount(const QModelIndex &parent) const
{
return (!parent.isValid() && m_fields) ? m_fields->size() + 1 : 0;
}
int FieldModel::columnCount(const QModelIndex &parent) const
{
return !parent.isValid() ? 2 : 0;
}
bool FieldModel::insertRows(int row, int count, const QModelIndex &parent)
{
#ifdef PASSWORD_MANAGER_GUI_QTWIDGETS
if(undoStack()) {
return push(new FieldModelInsertRowsCommand(this, row, count));
}
#endif
if(!parent.isValid() && row >= 0 && count > 0 && static_cast<size_t>(row) <= m_fields->size()) {
beginInsertRows(parent, row, row + count - 1);
m_fields->insert(m_fields->begin() + row, count, Field(m_accountEntry));
endInsertRows();
return true;
}
return false;
}
bool FieldModel::removeRows(int row, int count, const QModelIndex &parent)
{
#ifdef PASSWORD_MANAGER_GUI_QTWIDGETS
if(undoStack()) {
return push(new FieldModelRemoveRowsCommand(this, row, count));
}
#endif
if(!parent.isValid() && row >= 0 && count > 0 && static_cast<size_t>(row + count) <= m_fields->size()) {
beginRemoveRows(parent, row, row + count - 1);
m_fields->erase(m_fields->begin() + row, m_fields->begin() + row + count);
endRemoveRows();
return true;
}
return false;
}
bool FieldModel::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
{
if(!QAbstractTableModel::dropMimeData(data, action, row, column, parent)) {
if(data->hasText()) {
return setData(parent, data->text(), Qt::EditRole);
}
}
return false;
}
QStringList FieldModel::mimeTypes() const
{
return QAbstractTableModel::mimeTypes() << QStringLiteral("text/plain");
}
QMimeData *FieldModel::mimeData(const QModelIndexList &indexes) const
{
QMimeData *data = QAbstractTableModel::mimeData(indexes);
if(!indexes.isEmpty()) {
QStringList result;
foreach(const QModelIndex &index, indexes) {
result << index.data(Qt::EditRole).toString();
}
data->setText(result.join(QChar('\n')));
}
return data;
}
/*!
* \brief Returns the field for the specified row.
*
* Might be nullptr if no account entry is assigned or if the row is out of range.
*/
const Field *FieldModel::field(size_t row) const
{
if(m_fields && row < m_fields->size()) {
return &m_fields->at(row);
}
return nullptr;
}
}