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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_FULLSCREEN_CONTROLLER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_FULLSCREEN_CONTROLLER_H_
#include <memory>
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/geometry/float_point.h"
#include "third_party/blink/renderer/platform/geometry/int_size.h"
#include "third_party/blink/renderer/platform/graphics/color.h"
#include "third_party/blink/renderer/platform/heap/heap_allocator.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
class Element;
class FullscreenOptions;
class LocalFrame;
class WebViewImpl;
enum class FullscreenRequestType;
// FullscreenController is a per-WebView class that manages the transition into
// and out of fullscreen, including restoring scroll offset and scale after
// exiting fullscreen. It is (indirectly) used by the Fullscreen class.
class CORE_EXPORT FullscreenController {
USING_FAST_MALLOC(FullscreenController);
public:
explicit FullscreenController(WebViewImpl*);
// Called by Fullscreen (via ChromeClient) to request entering or exiting
// fullscreen.
void EnterFullscreen(LocalFrame&,
const FullscreenOptions*,
FullscreenRequestType request_type);
void ExitFullscreen(LocalFrame&);
// Called by content::RenderWidget (via WebWidget) to notify that we've
// entered or exited fullscreen. This can be because we requested it, or it
// can be initiated by the browser directly.
void DidEnterFullscreen();
void DidExitFullscreen();
// Called by Fullscreen (via ChromeClient) to notify that the fullscreen
// element has changed.
void FullscreenElementChanged(Element* old_element,
Element* new_element,
const FullscreenOptions*,
FullscreenRequestType request_type);
bool IsFullscreenOrTransitioning() const { return state_ != State::kInitial; }
void UpdateSize();
private:
void UpdatePageScaleConstraints(bool reset_constraints);
void RestoreBackgroundColorOverride();
void NotifyFramesOfFullscreenEntry(bool granted);
void EnterFullscreenCallback(bool granted);
WebViewImpl* web_view_base_;
// State is used to avoid unnecessary enter/exit requests.
enum class State {
kInitial,
kEnteringFullscreen,
kFullscreen,
kExitingFullscreen,
};
State state_ = State::kInitial;
bool initial_background_color_override_enabled_ = false;
RGBA32 initial_background_color_override_ = Color::kTransparent;
using PendingFullscreenSet = HeapLinkedHashSet<WeakMember<LocalFrame>>;
Persistent<PendingFullscreenSet> pending_frames_;
};
} // namespace blink
#endif
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