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/* 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 mozilla_dom_BrowsingContextWebProgress_h
#define mozilla_dom_BrowsingContextWebProgress_h
#include "nsIWebProgress.h"
#include "nsIWebProgressListener.h"
#include "nsTObserverArray.h"
#include "nsWeakReference.h"
namespace mozilla {
namespace dom {
class BrowsingContextWebProgress final : public nsIWebProgress,
public nsIWebProgressListener {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIWEBPROGRESS
NS_DECL_NSIWEBPROGRESSLISTENER
BrowsingContextWebProgress() = default;
struct ListenerInfo {
ListenerInfo(nsIWeakReference* aListener, unsigned long aNotifyMask)
: mWeakListener(aListener), mNotifyMask(aNotifyMask) {}
bool operator==(const ListenerInfo& aOther) const {
return mWeakListener == aOther.mWeakListener;
}
bool operator==(const nsWeakPtr& aOther) const {
return mWeakListener == aOther;
}
// Weak pointer for the nsIWebProgressListener...
nsWeakPtr mWeakListener;
// Mask indicating which notifications the listener wants to receive.
unsigned long mNotifyMask;
};
private:
virtual ~BrowsingContextWebProgress() = default;
void UpdateAndNotifyListeners(
uint32_t aFlag,
const std::function<void(nsIWebProgressListener*)>& aCallback);
using ListenerArray = nsAutoTObserverArray<ListenerInfo, 4>;
ListenerArray mListenerInfoList;
// This indicates whether we are currently suspending onStateChange top level
// STATE_START events for a document. We start suspending whenever we receive
// the first STATE_START event with the matching flags (see
// ::RecvOnStateChange for details), until we get a corresponding STATE_STOP
// event. In the meantime, if there other onStateChange events, this flag does
// not affect them. We do this to avoid duplicate onStateChange STATE_START
// events that happen during process switch. With this flag, we allow
// onStateChange STATE_START event from the old BrowserParent, but not the
// same event from the new BrowserParent during a process switch.
bool mSuspendOnStateStartChangeEvents = false;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_BrowsingContextWebProgress_h
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