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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/ui_devtools/views/dom_agent_mac.h"
#import <AppKit/AppKit.h>
#include <algorithm>
#include "base/functional/bind.h"
#include "components/ui_devtools/views/widget_element.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/views/widget/native_widget_mac.h"
namespace ui_devtools {
DOMAgentMac::DOMAgentMac() = default;
DOMAgentMac::~DOMAgentMac() {
CHECK(!IsInObserverList());
}
protocol::Response DOMAgentMac::enable() {
init_native_widget_subscription_ =
views::NativeWidgetMac::RegisterInitNativeWidgetCallback(
base::BindRepeating(&DOMAgentMac::OnNativeWidgetAdded,
base::Unretained(this)));
return DOMAgent::enable();
}
protocol::Response DOMAgentMac::disable() {
init_native_widget_subscription_ = {};
for (views::Widget* widget : roots_)
widget->RemoveObserver(this);
roots_.clear();
return DOMAgent::disable();
}
std::vector<UIElement*> DOMAgentMac::CreateChildrenForRoot() {
if (roots_.size() == 0)
InitializeRootsFromOpenWindows();
std::vector<UIElement*> children;
for (views::Widget* widget : roots_) {
UIElement* widget_element = new WidgetElement(widget, this, element_root());
children.push_back(widget_element);
}
return children;
}
void DOMAgentMac::OnWidgetDestroying(views::Widget* widget) {
widget->RemoveObserver(this);
roots_.erase(std::ranges::find(roots_, widget), roots_.end());
}
void DOMAgentMac::OnNativeWidgetAdded(views::NativeWidgetMac* native_widget) {
views::Widget* widget = native_widget->GetWidget();
DCHECK(widget);
roots_.push_back(widget);
UIElement* widget_element = new WidgetElement(widget, this, element_root());
element_root()->AddChild(widget_element);
widget->AddObserver(this);
}
std::unique_ptr<protocol::DOM::Node> DOMAgentMac::BuildTreeForWindow(
UIElement* window_element_root) {
// Window elements aren't supported on Mac.
NOTREACHED();
}
void DOMAgentMac::InitializeRootsFromOpenWindows() {
for (NSWindow* window in NSApp.windows) {
if (views::Widget* widget = views::Widget::GetWidgetForNativeWindow(
gfx::NativeWindow(window))) {
// When in immersive fullscreen mode, an overlay widget has two associated
// NSWindows:
// 1. An invisible one created by Chrome, which serves as an anchor
// for child widgets.
// 2. A visible AppKit-owned NSToolbarFullScreenWindow.
// We ensures here that a widget is only observed once.
if (!widget->HasObserver(this)) {
widget->AddObserver(this);
roots_.push_back(widget);
}
}
}
}
// static
std::unique_ptr<DOMAgentViews> DOMAgentViews::Create() {
return std::make_unique<DOMAgentMac>();
}
} // namespace ui_devtools
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