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/*
SPDX-FileCopyrightText: 2008 Vladimir Prus <ghost@cs.msu.su>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "treemodel.h"
#include <iostream>
#include "treeitem.h"
using namespace KDevelop;
class KDevelop::TreeModelPrivate
{
public:
explicit TreeModelPrivate(const QVector<QString>& headers)
: headers(headers)
{
}
QVector<QString> headers;
TreeItem* root = nullptr;
};
TreeModel::TreeModel(const QVector<QString>& headers,
QObject *parent)
: QAbstractItemModel(parent)
, d_ptr(new TreeModelPrivate(headers))
{
}
void TreeModel::setRootItem(TreeItem *item)
{
Q_D(TreeModel);
d->root = item;
d->root->fetchMoreChildren();
}
TreeModel::~TreeModel()
{
Q_D(TreeModel);
delete d->root;
}
int TreeModel::columnCount(const QModelIndex &parent) const
{
Q_D(const TreeModel);
Q_UNUSED(parent);
return d->headers.size();
}
QVariant TreeModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
auto *item = static_cast<TreeItem*>(index.internalPointer());
if (role == ItemRole)
return QVariant::fromValue(item);
return item->data(index.column(), role);
}
Qt::ItemFlags TreeModel::flags(const QModelIndex &index) const
{
if (!index.isValid())
return Qt::NoItemFlags;
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}
QVariant TreeModel::headerData(int section, Qt::Orientation orientation,
int role) const
{
Q_D(const TreeModel);
if (orientation == Qt::Horizontal && role == Qt::DisplayRole)
return d->headers.value(section);
return QVariant();
}
QModelIndex TreeModel::index(int row, int column, const QModelIndex &parent)
const
{
Q_D(const TreeModel);
if (!hasIndex(row, column, parent))
return QModelIndex();
TreeItem *parentItem;
if (!parent.isValid())
parentItem = d->root;
else
parentItem = static_cast<TreeItem*>(parent.internalPointer());
TreeItem *childItem = parentItem->child(row);
if (childItem)
return createIndex(row, column, childItem);
else
return createIndex(row, column, nullptr);
}
QModelIndex TreeModel::parent(const QModelIndex &index) const
{
Q_D(const TreeModel);
if (!index.isValid())
return QModelIndex();
auto *childItem = static_cast<TreeItem*>(index.internalPointer());
TreeItem *parentItem = childItem->parent();
if (parentItem == d->root)
return QModelIndex();
return createIndex(parentItem->row(), 0, parentItem);
}
int TreeModel::rowCount(const QModelIndex &parent) const
{
Q_D(const TreeModel);
TreeItem *parentItem;
if (parent.column() > 0)
return 0;
if (!parent.isValid())
parentItem = d->root;
else
parentItem = static_cast<TreeItem*>(parent.internalPointer());
if(parentItem)
return parentItem->childCount();
else
return 0;
}
TreeItem* TreeModel::itemForIndex(const QModelIndex& index) const
{
Q_D(const TreeModel);
if (!index.isValid())
return d->root;
else
return static_cast<TreeItem*>(index.internalPointer());
}
QModelIndex TreeModel::indexForItem(TreeItem *item, int column) const
{
if (item->parent() == nullptr)
return QModelIndex();
if (TreeItem* parent = item->parent())
{
/* FIXME: we might store row directly in item. */
int row = parent->childItems.indexOf(item);
Q_ASSERT(row != -1);
return createIndex(row, column, item);
}
else
{
return QModelIndex();
}
}
void TreeModel::expanded(const QModelIndex &index)
{
TreeItem* item = itemForIndex(index);
QObject::connect(item, &TreeItem::allChildrenFetched, this, &TreeModel::itemChildrenReady);
if (item->hasMore() && item->childCount() == 1)
item->fetchMoreChildren();
else
emit itemChildrenReady();
item->setExpanded(true);
}
void TreeModel::collapsed(const QModelIndex &index)
{
TreeItem* item = itemForIndex(index);
item->setExpanded(false);
}
void TreeModel::clicked(const QModelIndex &index)
{
TreeItem* item = itemForIndex(index);
item->clicked();
}
bool TreeModel::setData(const QModelIndex& index, const QVariant& value,
int role)
{
/* FIXME: CheckStateRole is dirty. Should we pass the role to
the item? */
if (index.isValid()
&& (role == Qt::EditRole || role == Qt::CheckStateRole))
{
auto *item = static_cast<TreeItem*>(index.internalPointer());
item->setColumn(index.column(), value);
return true;
}
return false;
}
KDevelop::TreeItem* KDevelop::TreeModel::root() const
{
Q_D(const TreeModel);
return d->root;
}
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