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#include "ArrayGroupModel.h"
#include <vtkCellGrid.h>
#include <vtkDataSetAttributes.h>
#include <vtkDoubleArray.h>
#include <vtkStringArray.h>
#include <QVariant>
#include <sstream>
namespace
{
std::string columnName(vtkAbstractArray* array, int component)
{
std::ostringstream name;
name << array->GetName() << " " << component;
return name.str();
}
} // anonymous namespace
ArrayGroupModel::ArrayGroupModel(vtkCellGrid* data, vtkStringToken groupName, QObject* parent)
: QAbstractTableModel(parent)
, Data(data)
{
this->Data->Register(nullptr);
if (this->Data)
{
this->setGroupName(groupName, false);
}
}
ArrayGroupModel::~ArrayGroupModel()
{
this->Data->Delete();
this->CurrentTable = nullptr;
}
bool ArrayGroupModel::setGroupName(vtkStringToken groupName, bool signalChange)
{
if (groupName == this->GroupName)
{
return false;
}
if (signalChange)
{
Q_EMIT beginResetModel();
}
// Clear and rebuild CurrentTable, ArrayColumnStart, ColumnToArrayComponent.
this->GroupName = groupName;
this->CurrentTable = this->Data->FindAttributes(this->GroupName);
this->ColumnToArrayComponent.clear();
this->ArrayColumnStart.clear();
if (this->CurrentTable)
{
int numArrays = this->CurrentTable->GetNumberOfArrays();
for (int ii = 0; ii < numArrays; ++ii)
{
auto* array = this->CurrentTable->GetAbstractArray(ii);
this->ArrayColumnStart[array->GetName()] =
static_cast<int>(this->ColumnToArrayComponent.size());
int numComps = array->GetNumberOfComponents();
for (int jj = 0; jj < numComps; ++jj)
{
this->ColumnToArrayComponent.emplace_back(array, jj, columnName(array, jj));
}
}
}
// Notify Qt the table has completely changed.
if (signalChange)
{
Q_EMIT endResetModel();
}
return true;
}
int ArrayGroupModel::rowCount(const QModelIndex& parent) const
{
(void)parent;
return this->CurrentTable ? this->CurrentTable->GetNumberOfTuples() : 0;
}
int ArrayGroupModel::columnCount(const QModelIndex& parent) const
{
(void)parent;
return static_cast<int>(this->ColumnToArrayComponent.size());
}
QVariant ArrayGroupModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role != Qt::DisplayRole || orientation == Qt::Vertical)
{
return QVariant();
}
if (section < 0 || section > this->columnCount(QModelIndex()))
{
return QVariant();
}
return QString::fromStdString(this->ColumnToArrayComponent[section].Label);
}
QVariant ArrayGroupModel::data(const QModelIndex& index, int role) const
{
if (role != Qt::DisplayRole)
{
return QVariant();
}
if (index.row() < 0 || index.column() < 0 || index.row() >= this->rowCount(index.parent()) ||
index.column() >= this->columnCount(index.parent()))
{
return QVariant();
}
auto& colData(this->ColumnToArrayComponent[index.column()]);
auto* array = colData.Array;
if (auto* dataArray = vtkDataArray::SafeDownCast(array))
{
std::vector<double> tuple;
tuple.resize(dataArray->GetNumberOfComponents());
dataArray->GetTuple(index.row(), tuple.data());
return tuple[colData.Component];
}
else if (auto* stringArray = vtkStringArray::SafeDownCast(array))
{
std::string value =
stringArray->GetValue(stringArray->GetNumberOfComponents() * index.row() + colData.Component);
return QString::fromStdString(value);
}
return QVariant();
}
bool ArrayGroupModel::setData(const QModelIndex& index, const QVariant& value, int role)
{
if (role != Qt::EditRole)
{
return false;
}
if (index.row() < 0 || index.column() < 0 || index.row() >= this->rowCount(index.parent()) ||
index.column() >= this->columnCount(index.parent()))
{
return false;
}
// TODO: Record edit to a journal of edits, then update the output cell-grid.
auto& colData(this->ColumnToArrayComponent[index.column()]);
auto* array = colData.Array;
if (auto* dataArray = vtkDataArray::SafeDownCast(array))
{
if (value.isNull() || value.toString().isEmpty())
{
return false;
}
std::vector<double> tuple;
tuple.resize(dataArray->GetNumberOfComponents());
dataArray->GetTuple(index.row(), tuple.data());
tuple[colData.Component] = value.toDouble();
dataArray->SetTuple(index.row(), tuple.data());
this->Data->Modified();
Q_EMIT dataChanged(index, index);
return true;
}
else if (auto* stringArray = vtkStringArray::SafeDownCast(array))
{
stringArray->SetValue(stringArray->GetNumberOfComponents() * index.row() + colData.Component,
value.toString().toStdString());
this->Data->Modified();
Q_EMIT dataChanged(index, index);
return true;
}
return false;
}
Qt::ItemFlags ArrayGroupModel::flags(const QModelIndex& index) const
{
(void)index;
// return Qt::ItemIsEditable;
return Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemNeverHasChildren;
}
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