/*
* Copyright (C) 2013 Google Inc. All rights reserved.
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#ifndef FrameHost_h
#define FrameHost_h
#include "core/frame/PinchViewport.h"
#include "wtf/FastAllocBase.h"
#include "wtf/Noncopyable.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
namespace WebCore {
class Chrome;
class Page;
class PageConsole;
class PinchViewport;
class Settings;
class UseCounter;
// FrameHost is the set of global data shared between multiple frames
// and is provided by the embedder to each frame when created.
// FrameHost currently corresponds to the Page object in core/page
// however the concept of a Page is moving up out of Blink.
// In an out-of-process iframe world, a single Page may have
// multiple frames in different process, thus Page becomes a
// browser-level concept and Blink core/ only knows about its LocalFrame (and FrameHost).
// Separating Page from the rest of core/ through this indirection
// allows us to slowly refactor Page without breaking the rest of core.
class FrameHost {
WTF_MAKE_NONCOPYABLE(FrameHost); WTF_MAKE_FAST_ALLOCATED;
public:
static PassOwnPtr<FrameHost> create(Page&);
~FrameHost();
// Careful: This function will eventually be removed.
Page& page() const { return m_page; }
Settings& settings() const;
Chrome& chrome() const;
PageConsole& console() const;
UseCounter& useCounter() const;
// Corresponds to pixel density of the device where this Page is
// being displayed. In multi-monitor setups this can vary between pages.
// This value does not account for Page zoom, use LocalFrame::devicePixelRatio instead.
float deviceScaleFactor() const;
PinchViewport& pinchViewport();
private:
explicit FrameHost(Page&);
Page& m_page;
const OwnPtr<PageConsole> m_console;
PinchViewport m_pinchViewport;
};
}
#endif // FrameHost_h