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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "writeregistermodel.h"
using namespace Qt::StringLiterals;
enum { NumColumn = 0, CoilsColumn = 1, HoldingColumn = 2, ColumnCount = 3, RowCount = 10 };
WriteRegisterModel::WriteRegisterModel(QObject *parent)
: QAbstractTableModel(parent),
m_coils(RowCount, false), m_holdingRegisters(RowCount, 0u)
{
}
int WriteRegisterModel::rowCount(const QModelIndex & /* parent */) const
{
return RowCount;
}
int WriteRegisterModel::columnCount(const QModelIndex & /* parent */) const
{
return ColumnCount;
}
QVariant WriteRegisterModel::data(const QModelIndex &index, int role) const
{
const int row = index.row();
const int column = index.column();
if (!index.isValid() || row >= RowCount || column >= ColumnCount)
return {};
Q_ASSERT(m_coils.count() == RowCount);
Q_ASSERT(m_holdingRegisters.count() == RowCount);
if (column == NumColumn && role == Qt::DisplayRole)
return QString::number(row);
if (column == CoilsColumn && role == Qt::CheckStateRole) // coils
return m_coils.at(row) ? Qt::Checked : Qt::Unchecked;
if (column == HoldingColumn && role == Qt::DisplayRole) // holding registers
return QString("0x%1").arg(QString::number(m_holdingRegisters.at(row), 16));
return {};
}
QVariant WriteRegisterModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role != Qt::DisplayRole)
return {};
if (orientation == Qt::Horizontal) {
switch (section) {
case NumColumn:
return u"#"_s;
case CoilsColumn:
return u"Coils "_s;
case HoldingColumn:
return u"Holding Registers"_s;
default:
break;
}
}
return {};
}
bool WriteRegisterModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
const int row = index.row();
const int column = index.column();
if (!index.isValid() || row >= RowCount || column >= ColumnCount)
return false;
Q_ASSERT(m_coils.count() == RowCount);
Q_ASSERT(m_holdingRegisters.count() == RowCount);
if (column == CoilsColumn && role == Qt::CheckStateRole) { // coils
auto s = static_cast<Qt::CheckState>(value.toUInt());
s == Qt::Checked ? m_coils.setBit(row) : m_coils.clearBit(row);
emit dataChanged(index, index);
return true;
}
if (column == HoldingColumn && role == Qt::EditRole) { // holding registers
bool result = false;
quint16 newValue = value.toString().toUShort(&result, 16);
if (result)
m_holdingRegisters[row] = newValue;
emit dataChanged(index, index);
return result;
}
return false;
}
Qt::ItemFlags WriteRegisterModel::flags(const QModelIndex &index) const
{
const int row = index.row();
const int column = index.column();
Qt::ItemFlags flags = QAbstractTableModel::flags(index);
if (!index.isValid() || row >= RowCount || column >= ColumnCount)
return flags;
if ((row < m_address) || (row >= (m_address + m_number)))
flags &= ~Qt::ItemIsEnabled;
if (column == CoilsColumn) // coils
return flags | Qt::ItemIsUserCheckable;
if (column == HoldingColumn) // holding registers
return flags | Qt::ItemIsEditable;
return flags;
}
void WriteRegisterModel::setStartAddress(int address)
{
m_address = address;
emit updateViewport();
}
void WriteRegisterModel::setNumberOfValues(const QString &number)
{
m_number = number.toInt();
emit updateViewport();
}
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