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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef QWASMWINDOWTREENODE_INC
#define QWASMWINDOWTREENODE_INC
template<class Window>
QWasmWindowTreeNode<Window>::QWasmWindowTreeNode()
: m_childStack(std::bind(&QWasmWindowTreeNode<Window>::onTopWindowChanged, this))
{
}
template<class Window>
QWasmWindowTreeNode<Window>::~QWasmWindowTreeNode() = default;
template<class Window>
void QWasmWindowTreeNode<Window>::onParentChanged(QWasmWindowTreeNode *previousParent,
QWasmWindowTreeNode *currentParent,
typename QWasmWindowStack<Window>::PositionPreference positionPreference)
{
auto *window = asWasmWindow();
if (previousParent)
previousParent->m_childStack.removeWindow(window);
if (currentParent)
currentParent->m_childStack.pushWindow(window, positionPreference);
}
template<class Window>
Window *QWasmWindowTreeNode<Window>::asWasmWindow()
{
return nullptr;
}
template<class Window>
void QWasmWindowTreeNode<Window>::setWindowZOrder(Window *window, int z)
{
window->setZOrder(z);
}
template<class Window>
void QWasmWindowTreeNode<Window>::onPositionPreferenceChanged(
typename QWasmWindowStack<Window>::PositionPreference positionPreference)
{
if (parentNode()) {
parentNode()->m_childStack.windowPositionPreferenceChanged(asWasmWindow(),
positionPreference);
}
}
template<class Window>
void QWasmWindowTreeNode<Window>::setAsActiveNode()
{
if (parentNode())
parentNode()->setActiveChildNode(asWasmWindow());
// At the end, this is a recursive function
m_activeIndex = ++s_nextActiveIndex;
}
template<class Window>
void QWasmWindowTreeNode<Window>::bringToTop()
{
if (!parentNode())
return;
parentNode()->m_childStack.raise(asWasmWindow());
parentNode()->bringToTop();
}
template<class Window>
void QWasmWindowTreeNode<Window>::sendToBottom()
{
if (!parentNode())
return;
parentNode()->m_childStack.lower(asWasmWindow());
}
template<class Window>
void QWasmWindowTreeNode<Window>::onTopWindowChanged()
{
constexpr int zOrderForElementInFrontOfScreen = 3;
int z = zOrderForElementInFrontOfScreen;
std::for_each(m_childStack.rbegin(), m_childStack.rend(),
[this, &z](Window *window) { setWindowZOrder(window, z++); });
}
template<class Window>
void QWasmWindowTreeNode<Window>::setActiveChildNode(Window *activeChild)
{
for (auto *child : m_childStack)
child->onActivationChanged(child == activeChild);
setAsActiveNode();
}
#endif /* QWASMWINDOWTREENODE_INC */