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content / browser / media / desktop_media_window_registry_mac.mm [blame]
// 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 <Cocoa/Cocoa.h>
#include "base/no_destructor.h"
#include "content/browser/media/desktop_media_window_registry.h"
namespace content {
class DesktopMediaWindowRegistryMac final : public DesktopMediaWindowRegistry {
public:
static DesktopMediaWindowRegistryMac* GetInstance() {
static base::NoDestructor<DesktopMediaWindowRegistryMac> instance;
return instance.get();
}
DesktopMediaWindowRegistryMac() = default;
DesktopMediaWindowRegistryMac(const DesktopMediaWindowRegistryMac&) = delete;
DesktopMediaWindowRegistryMac& operator=(
const DesktopMediaWindowRegistryMac&) = delete;
// Note that DesktopMediaPickerViews in //chrome depends on the fact that
// the Id returned from this function is the NSWindow's windowNumber, but
// that invariant is *not* part of the general contract for DesktopMediaID.
DesktopMediaID::Id RegisterWindow(gfx::NativeWindow window) override {
// Ensure that we don't inadvertently crop IDs.
static_assert(sizeof(NSInteger) == sizeof(DesktopMediaID::Id));
return window.GetNativeNSWindow().windowNumber;
}
gfx::NativeWindow GetWindowById(DesktopMediaID::Id id) override {
return gfx::NativeWindow([NSApp windowWithWindowNumber:id]);
}
private:
~DesktopMediaWindowRegistryMac() override = default;
};
// static
DesktopMediaWindowRegistry* DesktopMediaWindowRegistry::GetInstance() {
return DesktopMediaWindowRegistryMac::GetInstance();
}
} // namespace content