QVariant CurveNameList::data (const QModelIndex &index,
int role) const
{
LOG4CPP_DEBUG_S ((*mainCat)) << "CurveNameList::data"
<< " isRoot=" << (index.isValid () ? "no" : "yes")
<< " role=" << roleAsString (role).toLatin1 ().data ();
if (!index.isValid ()) {
// Root item
return QVariant ();
}
int row = index.row ();
if (row < 0 || row >= m_modelCurvesEntries.count ()) {
return QVariant();
}
if ((role != Qt::DisplayRole) &&
(role != Qt::EditRole)) {
return QVariant();
}
CurveNameListEntry curvesEntry (m_modelCurvesEntries.at (row));
if (index.column () == 0) {
return curvesEntry.curveNameCurrent();
} else if (index.column () == 1) {
return curvesEntry.curveNameOriginal();
} else if (index.column () == 2) {
return curvesEntry.numPoints ();
} else {
ENGAUGE_ASSERT (false);
return curvesEntry.curveNameOriginal(); // Default if asserts are disabled
}
}
bool CurveNameList::setData (const QModelIndex &index,
const QVariant &value,
int role)
{
LOG4CPP_DEBUG_S ((*mainCat)) << "CurveNameList::setData"
<< " row=" << index.row()
<< " value=" << value.toString().toLatin1().data()
<< " role=" << roleAsString (role).toLatin1().data();
bool success;
if (role == Qt::EditRole) {
// Each curve name must be unique
if (curveNameIsAcceptable (value.toString(),
index.row())) {
// Curve name is fine
QModelIndex idxOld = QStandardItemModel::index (index.row(), CURVE_NAME_LIST_COLUMN_CURRENT);
// Old and new curve names
QString curveCurrentOld = data (idxOld).toString ();
QString curveCurrentNew = value.toString ();
// Remove old entry after saving original curve name
QString curveOriginal;
if (m_currentCurveToOriginalCurve.contains (curveCurrentOld)) {
// Remember old original curve name
curveOriginal = m_currentCurveToOriginalCurve [curveCurrentOld];
// Remove old entry
m_currentCurveToOriginalCurve.remove (curveCurrentOld);
// Add new entry
m_currentCurveToOriginalCurve [curveCurrentNew] = curveOriginal;
}
success = QStandardItemModel::setData (index,
value,
role);
} else {
// Curve name is unacceptable
success = false;
}
} else {
// For non-edits, this method just calls the superclass method
success = QStandardItemModel::setData (index,
value,
role);
}
return success;
}
QString rolesAsString (const QVector<int> &roles)
{
QString str;
for (int i = 0; i < roles.count (); i++) {
if (i > 0) {
str += ",";
}
str += roleAsString (roles [i]);
}
return str;
}
bool CurveNameList::setData (const QModelIndex &index,
const QVariant &value,
int role)
{
LOG4CPP_INFO_S ((*mainCat)) << "CurveNameList::setData"
<< " indexRow=" << index.row ()
<< " indexCol=" << index.column ()
<< " indexValid=" << (index.isValid() ? "valid" : "invalid")
<< " valueValid=" << (value.isValid () ? "valid" : "invalid")
<< " value=" << value.toString().toLatin1().data()
<< " role=" << roleAsString (role).toLatin1 ().data ();
bool success = false;
if (index.isValid()) {
// Process the new entry
int row = index.row ();
if (row < m_modelCurvesEntries.count ()) {
// Variable 'row' points to an empty entry (created by insertRows) so we populate it here
success = true;
QString before = m_modelCurvesEntries.join (PIPE).replace (TAB, SPACE);
if (!value.isValid () && (role == Qt::EditRole)) {
// Remove the entry
m_modelCurvesEntries.removeAt (row);
} else {
// Modify the entry
CurveNameListEntry curvesEntry (m_modelCurvesEntries [row]); // Retrieve entry
if (index.column () == 0) {
if (role == Qt::EditRole) {
// Does new curve name meet the requirements
if (curveNameIsAcceptable (value.toString (),
row)) {
curvesEntry.setCurveNameCurrent (value.toString ());
m_modelCurvesEntries [row] = curvesEntry.toString (); // Save update entry
} else {
success = false;
}
} else if ((role == Qt::DisplayRole) ||
(curveNameIsAcceptable (value.toString(),
row))) {
// Above we skipped curve name uniqueness check for Qt::DisplayRole since that role is used when dragging
// curve from one place to another, since for a short time the new curve name will coexist
// with the old curve name (until the old entry is removed)
if (rowIsUnpopulated (row)) {
success = true;
curvesEntry.setCurveNameCurrent (value.toString ());
curvesEntry.setNumPoints (0);
m_modelCurvesEntries [row] = curvesEntry.toString (); // Save update entry
tryToRemoveOriginalCopy (index,
value,
role);
} else {
success = false;
}
}
} else if (index.column () == 1) {
curvesEntry.setCurveNameOriginal (value.toString ());
m_modelCurvesEntries [row] = curvesEntry.toString (); // Save update entry
} else if (index.column () == 2) {
curvesEntry.setNumPoints (value.toInt ());
m_modelCurvesEntries [row] = curvesEntry.toString (); // Save update entry
} else {
ENGAUGE_ASSERT (false);
}
if (success) {
emit dataChanged (index,
index);
}
QString after = m_modelCurvesEntries.join (PIPE).replace (TAB, SPACE);
LOG4CPP_INFO_S ((*mainCat)) << "CurveNameList::setData setting"
<< " before=" << before.toLatin1().data()
<< " after=" << after.toLatin1().data();
}
}
}
return success;
}
