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WindowServer: Replace modal stacks with modal chains

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And apply modal effects on move_to_front_and_make_active()

Instead of building a vector of windows every time we want to
loop over a group of related modals, simply recurse through
their ancestory. This lineage is now called a modal chain. Modal
chains begin at the first modeless parent, and a new chain
starts at every modeless child. This lets apps spawn child windows
independent of the main window's modal effects, restore state,
and workspace, yet still remain descendants.

Looping through a modal chain is recursive and includes the
modeless window which begins it.
This commit is contained in:
thankyouverycool 2022-08-22 14:29:33 -04:00 • committed by Andreas Kling
parent 4c7f95e2f8
commit 788b16cbf8
3 changed files with 55 additions and 72 deletions
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18
Userland/Services/WindowServer/Window.cpp
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@ -679,18 +679,12 @@ bool Window::is_active() const
Window* Window::blocking_modal_window()
{
// A window is blocked if any immediate child, or any child further
// down the chain is modal
for (auto& window : m_child_windows) {
if (window && !window->is_destroyed()) {
if (window->is_modal())
return window;
if (auto* blocking_window = window->blocking_modal_window())
return blocking_window;
}
}
return nullptr;
auto maybe_blocker = WindowManager::the().for_each_window_in_modal_chain(*this, [&](auto& window) {
if (window.is_blocking() && this != &window)
return IterationDecision::Break;
return IterationDecision::Continue;
});
return maybe_blocker;
}
void Window::set_default_icon()