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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
/*
treeitem.cpp
A container for items of data supplied by the simple tree model.
*/
#include "treeitem.h"
//! [0]
TreeItem::TreeItem(const QList<QVariant> &data, TreeItem *parent)
: itemData(data), parentItem(parent)
{}
//! [0]
//! [1]
TreeItem::~TreeItem()
{
qDeleteAll(childItems);
}
//! [1]
//! [2]
TreeItem *TreeItem::child(int number)
{
if (number < 0 || number >= childItems.size())
return nullptr;
return childItems.at(number);
}
//! [2]
//! [3]
int TreeItem::childCount() const
{
return childItems.count();
}
//! [3]
//! [4]
int TreeItem::childNumber() const
{
if (parentItem)
return parentItem->childItems.indexOf(const_cast<TreeItem*>(this));
return 0;
}
//! [4]
//! [5]
int TreeItem::columnCount() const
{
return itemData.count();
}
//! [5]
//! [6]
QVariant TreeItem::data(int column) const
{
if (column < 0 || column >= itemData.size())
return QVariant();
return itemData.at(column);
}
//! [6]
//! [7]
bool TreeItem::insertChildren(int position, int count, int columns)
{
if (position < 0 || position > childItems.size())
return false;
for (int row = 0; row < count; ++row) {
QList<QVariant> data(columns);
TreeItem *item = new TreeItem(data, this);
childItems.insert(position, item);
}
return true;
}
//! [7]
//! [8]
bool TreeItem::insertColumns(int position, int columns)
{
if (position < 0 || position > itemData.size())
return false;
for (int column = 0; column < columns; ++column)
itemData.insert(position, QVariant());
for (TreeItem *child : std::as_const(childItems))
child->insertColumns(position, columns);
return true;
}
//! [8]
//! [9]
TreeItem *TreeItem::parent()
{
return parentItem;
}
//! [9]
//! [10]
bool TreeItem::removeChildren(int position, int count)
{
if (position < 0 || position + count > childItems.size())
return false;
for (int row = 0; row < count; ++row)
delete childItems.takeAt(position);
return true;
}
//! [10]
bool TreeItem::removeColumns(int position, int columns)
{
if (position < 0 || position + columns > itemData.size())
return false;
for (int column = 0; column < columns; ++column)
itemData.remove(position);
for (TreeItem *child : std::as_const(childItems))
child->removeColumns(position, columns);
return true;
}
//! [11]
bool TreeItem::setData(int column, const QVariant &value)
{
if (column < 0 || column >= itemData.size())
return false;
itemData[column] = value;
return true;
}
//! [11]
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