gecko-dev/dom/base/nsElementFrameLoaderOwner.h

78 строки
2.1 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set tw=80 expandtab softtabstop=2 ts=2 sw=2: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsElementFrameLoaderOwner_h
#define nsElementFrameLoaderOwner_h
#include "mozilla/Attributes.h"
#include "mozilla/dom/Element.h"
#include "nsIFrameLoader.h"
#include "nsIDOMEventListener.h"
#include "mozilla/dom/FromParser.h"
#include "mozilla/ErrorResult.h"
#include "nsFrameLoader.h"
namespace mozilla {
namespace dom {
class Element;
} // namespace dom
} // namespace mozilla
class nsXULElement;
/**
* A helper class for frame elements
*/
class nsElementFrameLoaderOwner : public nsIFrameLoaderOwner
{
public:
explicit nsElementFrameLoaderOwner(mozilla::dom::FromParser aFromParser)
: mNetworkCreated(aFromParser == mozilla::dom::FROM_PARSER_NETWORK)
, mBrowserFrameListenersRegistered(false)
, mFrameLoaderCreationDisallowed(false)
{
}
virtual ~nsElementFrameLoaderOwner();
NS_DECL_NSIFRAMELOADEROWNER
// nsIContent
void SwapFrameLoaders(nsXULElement& aOtherOwner, mozilla::ErrorResult& aError);
protected:
// This doesn't really ensure a frame loader in all cases, only when
// it makes sense.
void EnsureFrameLoader();
nsresult LoadSrc();
nsIDocument* GetContentDocument();
nsresult GetContentDocument(nsIDOMDocument** aContentDocument);
already_AddRefed<nsPIDOMWindow> GetContentWindow();
nsresult GetContentWindow(nsIDOMWindow** aContentWindow);
/**
* Get element for this frame. Avoids diamond inheritance problem.
* @return Element for this node
*/
virtual mozilla::dom::Element* ThisFrameElement() = 0;
nsRefPtr<nsFrameLoader> mFrameLoader;
/**
* True when the element is created by the parser using the
* NS_FROM_PARSER_NETWORK flag.
* If the element is modified, it may lose the flag.
*/
bool mNetworkCreated;
bool mBrowserFrameListenersRegistered;
bool mFrameLoaderCreationDisallowed;
};
#endif // nsElementFrameLoaderOwner_h