76 lines
1.5 KiB
C++
76 lines
1.5 KiB
C++
// Copyright (C) 2024 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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/*
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treeitem.cpp
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A container for items of data supplied by the simple tree model.
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*/
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#include "treeitem.h"
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//! [0]
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TreeItem::TreeItem(QVariantList data, TreeItem *parent)
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: m_itemData(std::move(data)), m_parentItem(parent)
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{}
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//! [0]
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//! [1]
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void TreeItem::appendChild(std::unique_ptr<TreeItem> &&child)
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{
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m_childItems.push_back(std::move(child));
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}
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//! [1]
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//! [2]
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TreeItem *TreeItem::child(int row)
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{
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return row >= 0 && row < childCount() ? m_childItems.at(row).get() : nullptr;
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}
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//! [2]
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//! [3]
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int TreeItem::childCount() const
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{
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return int(m_childItems.size());
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}
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//! [3]
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//! [4]
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int TreeItem::columnCount() const
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{
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return int(m_itemData.count());
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}
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//! [4]
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//! [5]
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QVariant TreeItem::data(int column) const
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{
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return m_itemData.value(column);
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}
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//! [5]
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//! [6]
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TreeItem *TreeItem::parentItem()
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{
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return m_parentItem;
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}
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//! [6]
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//! [7]
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int TreeItem::row() const
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{
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if (m_parentItem == nullptr)
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return 0;
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const auto it = std::find_if(m_parentItem->m_childItems.cbegin(), m_parentItem->m_childItems.cend(),
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[this](const std::unique_ptr<TreeItem> &treeItem) {
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return treeItem.get() == this;
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});
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if (it != m_parentItem->m_childItems.cend())
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return std::distance(m_parentItem->m_childItems.cbegin(), it);
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Q_ASSERT(false); // should not happen
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return -1;
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}
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//! [7]
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