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7d11edbe17
In order to avoid having multiple instances, we were keeping a pointer
to these singleton objects and only allocating them when it was null.
We have `__cxa_guard_{acquire,release}` in the userland, so there's no
need to do this dance, as the compiler will ensure that the constructors
are only called once.
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "WindowList.h"
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WindowList& WindowList::the()
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{
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static WindowList s_the;
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return s_the;
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}
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Window* WindowList::find_parent(const Window& window)
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{
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if (!window.parent_identifier().is_valid())
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return nullptr;
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for (auto& it : m_windows) {
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auto& w = *it.value;
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if (w.identifier() == window.parent_identifier())
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return &w;
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}
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return nullptr;
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}
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Window* WindowList::window(const WindowIdentifier& identifier)
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{
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auto it = m_windows.find(identifier);
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if (it != m_windows.end())
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return it->value;
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return nullptr;
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}
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Window& WindowList::ensure_window(const WindowIdentifier& identifier)
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{
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auto it = m_windows.find(identifier);
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if (it != m_windows.end())
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return *it->value;
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auto window = make<Window>(identifier);
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auto& window_ref = *window;
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m_windows.set(identifier, move(window));
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return window_ref;
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}
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void WindowList::remove_window(const WindowIdentifier& identifier)
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{
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m_windows.remove(identifier);
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}
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