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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "qwasmwindowstack.h"
QT_BEGIN_NAMESPACE
QWasmWasmWindowStack::QWasmWasmWindowStack(TopWindowChangedCallbackType topWindowChangedCallback)
: m_topWindowChangedCallback(std::move(topWindowChangedCallback))
{
}
QWasmWasmWindowStack::~QWasmWasmWindowStack() = default;
void QWasmWasmWindowStack::pushWindow(QWasmWindow *window)
{
Q_ASSERT(m_windowStack.count(window) == 0);
m_windowStack.push_back(window);
m_topWindowChangedCallback(window);
}
void QWasmWasmWindowStack::removeWindow(QWasmWindow *window)
{
Q_ASSERT(m_windowStack.count(window) == 1);
auto it = std::find(m_windowStack.begin(), m_windowStack.end(), window);
const bool removingBottom = m_windowStack.begin() == it;
const bool removingTop = m_windowStack.end() - 1 == it;
if (removingBottom)
m_firstWindowTreatment = FirstWindowTreatment::Regular;
m_windowStack.erase(it);
if (removingTop)
m_topWindowChangedCallback(topWindow());
}
void QWasmWasmWindowStack::raise(QWasmWindow *window)
{
Q_ASSERT(m_windowStack.count(window) == 1);
if (window == rootWindow() || window == topWindow())
return;
auto it = std::find(regularWindowsBegin(), m_windowStack.end(), window);
std::rotate(it, it + 1, m_windowStack.end());
m_topWindowChangedCallback(topWindow());
}
void QWasmWasmWindowStack::lower(QWasmWindow *window)
{
Q_ASSERT(m_windowStack.count(window) == 1);
if (window == rootWindow())
return;
const bool loweringTopWindow = topWindow() == window;
auto it = std::find(regularWindowsBegin(), m_windowStack.end(), window);
std::rotate(regularWindowsBegin(), it, it + 1);
if (loweringTopWindow && topWindow() != window)
m_topWindowChangedCallback(topWindow());
}
QWasmWasmWindowStack::iterator QWasmWasmWindowStack::begin()
{
return m_windowStack.rbegin();
}
QWasmWasmWindowStack::iterator QWasmWasmWindowStack::end()
{
return m_windowStack.rend();
}
QWasmWasmWindowStack::const_iterator QWasmWasmWindowStack::begin() const
{
return m_windowStack.rbegin();
}
QWasmWasmWindowStack::const_iterator QWasmWasmWindowStack::end() const
{
return m_windowStack.rend();
}
QWasmWasmWindowStack::const_reverse_iterator QWasmWasmWindowStack::rbegin() const
{
return m_windowStack.begin();
}
QWasmWasmWindowStack::const_reverse_iterator QWasmWasmWindowStack::rend() const
{
return m_windowStack.end();
}
bool QWasmWasmWindowStack::empty() const
{
return m_windowStack.empty();
}
size_t QWasmWasmWindowStack::size() const
{
return m_windowStack.size();
}
QWasmWindow *QWasmWasmWindowStack::rootWindow() const
{
return m_firstWindowTreatment == FirstWindowTreatment::AlwaysAtBottom ? m_windowStack.first()
: nullptr;
}
QWasmWindow *QWasmWasmWindowStack::topWindow() const
{
return m_windowStack.last();
}
QWasmWasmWindowStack::StorageType::iterator QWasmWasmWindowStack::regularWindowsBegin()
{
return m_windowStack.begin()
+ (m_firstWindowTreatment == FirstWindowTreatment::AlwaysAtBottom ? 1 : 0);
}
QT_END_NAMESPACE
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