| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "modules/screen_orientation/ScreenScreenOrientation.h" |
| |
| #include "bindings/core/v8/ScriptState.h" |
| #include "core/frame/Screen.h" |
| #include "modules/screen_orientation/ScreenOrientation.h" |
| |
| namespace blink { |
| |
| // static |
| ScreenScreenOrientation& ScreenScreenOrientation::from(Screen& screen) |
| { |
| ScreenScreenOrientation* supplement = static_cast<ScreenScreenOrientation*>(Supplement<Screen>::from(screen, supplementName())); |
| if (!supplement) { |
| supplement = new ScreenScreenOrientation(); |
| provideTo(screen, supplementName(), supplement); |
| } |
| return *supplement; |
| } |
| |
| // static |
| ScreenOrientation* ScreenScreenOrientation::orientation(ScriptState* state, Screen& screen) |
| { |
| ScreenScreenOrientation& self = ScreenScreenOrientation::from(screen); |
| if (!screen.frame()) |
| return nullptr; |
| |
| if (!self.m_orientation) |
| self.m_orientation = ScreenOrientation::create(screen.frame()); |
| |
| return self.m_orientation; |
| } |
| |
| const char* ScreenScreenOrientation::supplementName() |
| { |
| return "ScreenScreenOrientation"; |
| } |
| |
| DEFINE_TRACE(ScreenScreenOrientation) |
| { |
| visitor->trace(m_orientation); |
| Supplement<Screen>::trace(visitor); |
| } |
| |
| } // namespace blink |