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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_SCREEN_DETAILS_SCREEN_DETAILS_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_SCREEN_DETAILS_SCREEN_DETAILS_H_
#include "third_party/blink/renderer/core/dom/events/event_target.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "ui/display/screen_infos.h"
namespace blink {
class LocalDOMWindow;
class ScreenDetailed;
// Interface exposing multi-screen information.
// https://w3c.github.io/window-management/
class MODULES_EXPORT ScreenDetails final
: public EventTarget,
public ExecutionContextLifecycleObserver {
DEFINE_WRAPPERTYPEINFO();
public:
explicit ScreenDetails(LocalDOMWindow* window);
// Web-exposed interface:
const HeapVector<Member<ScreenDetailed>>& screens() const;
ScreenDetailed* currentScreen() const;
DEFINE_ATTRIBUTE_EVENT_LISTENER(screenschange, kScreenschange)
DEFINE_ATTRIBUTE_EVENT_LISTENER(currentscreenchange, kCurrentscreenchange)
// EventTarget:
const AtomicString& InterfaceName() const override;
ExecutionContext* GetExecutionContext() const override;
// ExecutionContextLifecycleObserver:
void ContextDestroyed() override;
void Trace(Visitor*) const override;
// Called on visual property updates with potentially new screen information.
// Update web-exposed data structures and enqueues events for dispatch.
void UpdateScreenInfos(LocalDOMWindow* window,
const display::ScreenInfos& new_infos);
private:
// Update web-exposed data structures on screen information changes.
// Enqueues events for dispatch if `dispatch_events` is true.
void UpdateScreenInfosImpl(LocalDOMWindow* window,
const display::ScreenInfos& new_infos,
bool dispatch_events);
// The ScreenInfos sent by the previous UpdateScreenInfos call.
display::ScreenInfos prev_screen_infos_;
int64_t current_display_id_ = display::ScreenInfo::kInvalidDisplayId;
HeapVector<Member<ScreenDetailed>> screens_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_SCREEN_DETAILS_SCREEN_DETAILS_H_
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