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/*
* Copyright 2009 Ben Boeckel <MathStuf@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// Header include
#include "TreeModel.h"
// Sigmodr tree includes
#include "RootTreeItem.h"
// Sigmodr widget includes
#include <sigmodr/widgets/ObjectUI.h>
// KDE includes
#include <KIcon>
// Qt includes
#include <QtCore/QMimeData>
using namespace Sigmod;
using namespace Sigmodr::Tree;
TreeModel::TreeModel(QObject* parent) :
QAbstractItemModel(parent),
m_root(new RootTreeItem)
{
}
TreeModel::~TreeModel()
{
delete m_root;
}
QVariant TreeModel::data(const QModelIndex& index, const int role) const
{
if (!index.isValid())
return QVariant();
TreeItem* item = static_cast<TreeItem*>(index.internalPointer());
if (role == Qt::DisplayRole)
{
if (!index.column())
return item->text();
}
else if (role == Qt::DecorationRole)
{
switch (index.column())
{
case 1:
if (item->canEdit())
return KIcon("document-edit");
break;
case 2:
if (item->canRemove())
return KIcon("list-remove");
break;
case 3:
if (item->canAddTo())
return KIcon("list-add");
break;
default:
break;
}
}
else if (role == Qt::EditRole)
return QVariant::fromValue<QWidget*>(item->editWidget());
else if (role == AcceptedMimeTypesRole)
return item->acceptedMimeTypes();
return QVariant();
}
QModelIndex TreeModel::index(const int row, const int column, const QModelIndex& parent) const
{
if (!parent.isValid())
{
if ((row == -1) || (column == -1))
return createIndex(0, 0, m_root);
return QModelIndex();
}
TreeItem* item = static_cast<TreeItem*>(parent.internalPointer());
if ((row < 0) || (item->childCount() <= row) || (column < 0) || (4 <= column))
return QModelIndex();
return createIndex(row, column, item->childAt(row));
}
QModelIndex TreeModel::parent(const QModelIndex& child) const
{
if (!child.isValid())
return QModelIndex();
TreeItem* parent = static_cast<TreeItem*>(child.internalPointer())->parent();
if (!parent)
return QModelIndex();
return createIndex(parent->row(), 0, parent);
}
bool TreeModel::hasChildren(const QModelIndex& parent) const
{
if (!parent.isValid() || (0 < parent.column()))
return false;
return (0 < static_cast<TreeItem*>(parent.internalPointer())->childCount());
}
bool TreeModel::insertRows(const int row, const int count, const QModelIndex& parent)
{
if (!parent.isValid())
return false;
TreeItem* item = static_cast<TreeItem*>(parent.internalPointer());
if (!item->canAddTo() || (item == m_root) || (row != item->childCount()))
return false;
beginInsertRows(parent, row, row + count - 1);
for (int i = 0; i < count; ++i)
item->addChild();
endInsertRows();
// BUG: Fixed in Qt 4.6 (?)
emit(layoutAboutToBeChanged());
emit(layoutChanged());
return true;
}
bool TreeModel::removeRows(const int row, const int count, const QModelIndex& parent)
{
if (!parent.isValid())
return false;
TreeItem* item = static_cast<TreeItem*>(parent.internalPointer());
if (item == m_root)
return false;
for (int i = 0; i < count; ++i)
{
TreeItem* child = item->childAt(row + i);
if (!child || !child->canRemove())
return false;
}
beginRemoveRows(parent, row, row + count - 1);
for (int i = 0; i < count; ++i)
item->removeChild(row + i);
endRemoveRows();
return true;
}
int TreeModel::rowCount(const QModelIndex& parent) const
{
if (!parent.isValid())
return 0;
return static_cast<TreeItem*>(parent.internalPointer())->childCount();
}
int TreeModel::columnCount(const QModelIndex& parent) const
{
if (!parent.isValid())
return 0;
return 4;
}
Qt::ItemFlags TreeModel::flags(const QModelIndex& index) const
{
if (!index.isValid())
return Qt::ItemFlags();
Qt::ItemFlags f;
TreeItem* item = static_cast<TreeItem*>(index.internalPointer());
switch (index.column())
{
case 0:
f |= item->flags();
break;
case 1:
if (item->canEdit())
f |= Qt::ItemIsEnabled;
break;
case 2:
if (item->canRemove())
f |= Qt::ItemIsEnabled;
break;
case 3:
if (item->canAddTo())
f |= Qt::ItemIsEnabled;
break;
default:
break;
}
return f;
}
QStringList TreeModel::mimeTypes() const
{
}
QMimeData* TreeModel::mimeData(const QModelIndexList& indexes) const
{
QMimeData* data = new QMimeData;
QDomDocument document("SigmodCopyData");
foreach (const QModelIndex& index, indexes)
{
if (!index.isValid())
continue;
TreeItem* item = static_cast<TreeItem*>(index.internalPointer());
if (item->canEdit())
document.appendChild(item->copyData());
}
data->setData("application/x-sigmod-copy+xml", document.toByteArray());
return data;
}
bool TreeModel::dropMimeData(const QMimeData* data, Qt::DropAction action, const int row, const int column, const QModelIndex& parent)
{
}
Qt::DropActions TreeModel::supportedDropActions() const
{
return Qt::CopyAction | Qt::MoveAction;
}
void TreeModel::addGame(Game* game)
{
beginInsertRows(index(-1, -1, QModelIndex()), m_root->childCount(), m_root->childCount());
m_root->addGame(game);
endInsertRows();
}
void TreeModel::deleteGame(const Game* game)
{
for (int i = 0; i < m_root->childCount(); ++i)
{
if (m_root->childAt(i)->game() == game)
{
beginRemoveRows(index(-1, -1, QModelIndex()), i, i);
m_root->removeChild(i);
endRemoveRows();
break;
}
}
}
const Game* TreeModel::findGame(const QModelIndex& index) const
{
if (!index.isValid())
return NULL;
return static_cast<TreeItem*>(index.internalPointer())->game();
}
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