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50
51#include "writeregistermodel.h"
52
53enum { NumColumn = 0, CoilsColumn = 1, HoldingColumn = 2, ColumnCount = 3, RowCount = 10 };
54
55WriteRegisterModel::WriteRegisterModel(QObject *parent)
56 : QAbstractTableModel(parent),
57 m_coils(RowCount, false), m_holdingRegisters(RowCount, 0u)
58{
59}
60
61int WriteRegisterModel::rowCount(const QModelIndex &/*parent*/) const
62{
63 return RowCount;
64}
65
66int WriteRegisterModel::columnCount(const QModelIndex &/*parent*/) const
67{
68 return ColumnCount;
69}
70
71QVariant WriteRegisterModel::data(const QModelIndex &index, int role) const
72{
73 if (!index.isValid() || index.row() >= RowCount || index.column() >= ColumnCount)
74 return QVariant();
75
76 Q_ASSERT(m_coils.count() == RowCount);
77 Q_ASSERT(m_holdingRegisters.count() == RowCount);
78
79 if (index.column() == NumColumn && role == Qt::DisplayRole)
80 return QString::number(index.row());
81
82 if (index.column() == CoilsColumn && role == Qt::CheckStateRole) // coils
83 return m_coils.at(i: index.row()) ? Qt::Checked : Qt::Unchecked;
84
85 if (index.column() == HoldingColumn && role == Qt::DisplayRole) // holding registers
86 return QString("0x%1").arg(a: QString::number(m_holdingRegisters.at(i: index.row()), base: 16));
87
88 return QVariant();
89
90}
91
92QVariant WriteRegisterModel::headerData(int section, Qt::Orientation orientation, int role) const
93{
94 if (role != Qt::DisplayRole)
95 return QVariant();
96
97 if (orientation == Qt::Horizontal) {
98 switch (section) {
99 case NumColumn:
100 return QStringLiteral("#");
101 case CoilsColumn:
102 return QStringLiteral("Coils ");
103 case HoldingColumn:
104 return QStringLiteral("Holding Registers");
105 default:
106 break;
107 }
108 }
109 return QVariant();
110}
111
112bool WriteRegisterModel::setData(const QModelIndex &index, const QVariant &value, int role)
113{
114 if (!index.isValid() || index.row() >= RowCount || index.column() >= ColumnCount)
115 return false;
116
117 Q_ASSERT(m_coils.count() == RowCount);
118 Q_ASSERT(m_holdingRegisters.count() == RowCount);
119
120 if (index.column() == CoilsColumn && role == Qt::CheckStateRole) { // coils
121 auto s = static_cast<Qt::CheckState>(value.toUInt());
122 s == Qt::Checked ? m_coils.setBit(index.row()) : m_coils.clearBit(i: index.row());
123 emit dataChanged(topLeft: index, bottomRight: index);
124 return true;
125 }
126
127 if (index.column() == HoldingColumn && role == Qt::EditRole) { // holding registers
128 bool result = false;
129 quint16 newValue = value.toString().toUShort(ok: &result, base: 16);
130 if (result)
131 m_holdingRegisters[index.row()] = newValue;
132
133 emit dataChanged(topLeft: index, bottomRight: index);
134 return result;
135 }
136
137 return false;
138}
139
140Qt::ItemFlags WriteRegisterModel::flags(const QModelIndex &index) const
141{
142 if (!index.isValid() || index.row() >= RowCount || index.column() >= ColumnCount)
143 return QAbstractTableModel::flags(index);
144
145 Qt::ItemFlags flags = QAbstractTableModel::flags(index);
146 if ((index.row() < m_address) || (index.row() >= (m_address + m_number)))
147 flags &= ~Qt::ItemIsEnabled;
148
149 if (index.column() == CoilsColumn) // coils
150 return flags | Qt::ItemIsUserCheckable;
151 if (index.column() == HoldingColumn) // holding registers
152 return flags | Qt::ItemIsEditable;
153
154 return flags;
155}
156
157void WriteRegisterModel::setStartAddress(int address)
158{
159 m_address = address;
160 emit updateViewport();
161}
162
163void WriteRegisterModel::setNumberOfValues(const QString &number)
164{
165 m_number = number.toInt();
166 emit updateViewport();
167}
168

source code of qtserialbus/examples/serialbus/modbus/master/writeregistermodel.cpp