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/*
SPDX-FileCopyrightText: 2007 Alexander Dymo <adymo@kdevelop.org>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "aggregatemodel.h"
#include <QStandardItem>
#include <QStandardItemModel>
namespace Sublime {
class AggregateModelPrivate
{
public:
/*Instance of this class is used as an internal pointer to the aggregator items
in the model to differentiate between aggregators and non-aggregators.*/
class AggregateInternalData {
};
AggregateModelPrivate()
{
internal = new AggregateInternalData();
}
~AggregateModelPrivate()
{
delete internal;
}
QList<QStandardItemModel*> modelList;
QMap<QStandardItemModel*, QString> modelNames;
AggregateInternalData *internal;
};
AggregateModel::AggregateModel(QObject *parent)
:QAbstractItemModel(parent)
,d_ptr(new AggregateModelPrivate())
{
}
AggregateModel::~AggregateModel() = default;
void AggregateModel::addModel(const QString &name, QStandardItemModel *model)
{
Q_D(AggregateModel);
beginResetModel();
d->modelList << model;
d->modelNames[model] = name;
endResetModel();
}
void AggregateModel::removeModel(QStandardItemModel *model)
{
Q_D(AggregateModel);
beginResetModel();
d->modelList.removeAll(model);
d->modelNames.remove(model);
endResetModel();
}
// reimplemented methods from QAbstractItemModel
Qt::ItemFlags AggregateModel::flags(const QModelIndex &index) const
{
if (!index.isValid())
return Qt::NoItemFlags;
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}
QVariant AggregateModel::headerData(int section, Qt::Orientation orientation, int role) const
{
Q_UNUSED(section);
Q_UNUSED(orientation);
Q_UNUSED(role);
//there's nothing to return here because aggregated models will have different headers
//so we just use empty headers for aggregate model.
return QString();
}
int AggregateModel::columnCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
//only 1 column is supported atm
return 1;
}
int AggregateModel::rowCount(const QModelIndex &parent) const
{
Q_D(const AggregateModel);
if (!parent.isValid())
{
//toplevel items represent aggregated models
return d->modelList.count();
}
else
{
//Qt model guideline - only 1st column has children
if (parent.column() != 0)
return 0;
//find out if the parent is an aggregator
if (parent.internalPointer() == d->internal)
{
//return the number of toplevel rows in the source model
return d->modelList[parent.row()]->rowCount(QModelIndex());
}
else
{
//we have a standard item in the source model - just map it into our model
auto *item = static_cast<QStandardItem*>(parent.internalPointer());
return item->rowCount();
}
}
}
QVariant AggregateModel::data(const QModelIndex &index, int role) const
{
Q_D(const AggregateModel);
if (!index.isValid() || (role != Qt::DisplayRole))
return QVariant();
if (!index.parent().isValid())
{
//aggregator item
return d->modelNames[d->modelList[index.row()]];
}
else
{
//we have a standard item in the source model - just map it into our model
auto *item = static_cast<QStandardItem*>(index.internalPointer());
return item->data(role);
}
}
QModelIndex AggregateModel::parent(const QModelIndex &index) const
{
Q_D(const AggregateModel);
if (!index.isValid())
return QModelIndex();
if (index.internalPointer() == d->internal)
{
//this is aggregator item, it has no parents
return QModelIndex();
}
//this is just an item from the model
auto *item = static_cast<QStandardItem*>(index.internalPointer());
QModelIndex parent;
if (!item->parent())
{
//we need to find the aggregator item that owns this index
//first find the model for this index
QStandardItemModel *model = item->model();
//next find the row number of the aggregator item
int row = d->modelList.indexOf(model);
parent = createIndex(row, 0, d->internal);
}
else
{
//we have a standard item in the source model - just map it into our model
parent = createIndex(item->parent()->row(), 0, item->parent());
}
return parent;
}
QModelIndex AggregateModel::index(int row, int column, const QModelIndex &parent) const
{
Q_D(const AggregateModel);
if (row < 0 || column < 0)
return QModelIndex();
if (!parent.isValid())
{
if (column > 1 || row >= d->modelList.count())
return QModelIndex();
//this is an aggregator item
return createIndex(row, column, d->internal);
}
else if (parent.internalPointer() == d->internal)
{
//the parent is an aggregator
//find the model that holds the items
QStandardItemModel *model = d->modelList[parent.row()];
//this is the first level of items
QStandardItem *item = model->item(row, column);
if (item)
return createIndex(row, column, item);
else
return QModelIndex();
}
else
{
//we have a standard item in the source model - just map it into our model
auto *parentItem = static_cast<QStandardItem*>(parent.internalPointer());
return createIndex(row, column, parentItem->child(row, column));
}
}
}
#include "moc_aggregatemodel.cpp"
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