forked from mirrors/gecko-dev
68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_BrowsingContextWebProgress_h
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#define mozilla_dom_BrowsingContextWebProgress_h
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#include "nsIWebProgress.h"
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#include "nsIWebProgressListener.h"
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#include "nsTObserverArray.h"
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#include "nsWeakReference.h"
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namespace mozilla {
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namespace dom {
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class BrowsingContextWebProgress final : public nsIWebProgress,
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public nsIWebProgressListener {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIWEBPROGRESS
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NS_DECL_NSIWEBPROGRESSLISTENER
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BrowsingContextWebProgress() = default;
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struct ListenerInfo {
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ListenerInfo(nsIWeakReference* aListener, unsigned long aNotifyMask)
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: mWeakListener(aListener), mNotifyMask(aNotifyMask) {}
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bool operator==(const ListenerInfo& aOther) const {
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return mWeakListener == aOther.mWeakListener;
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}
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bool operator==(const nsWeakPtr& aOther) const {
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return mWeakListener == aOther;
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}
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// Weak pointer for the nsIWebProgressListener...
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nsWeakPtr mWeakListener;
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// Mask indicating which notifications the listener wants to receive.
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unsigned long mNotifyMask;
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};
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private:
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virtual ~BrowsingContextWebProgress() = default;
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void UpdateAndNotifyListeners(
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uint32_t aFlag,
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const std::function<void(nsIWebProgressListener*)>& aCallback);
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using ListenerArray = nsAutoTObserverArray<ListenerInfo, 4>;
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ListenerArray mListenerInfoList;
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// This indicates whether we are currently suspending onStateChange top level
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// STATE_START events for a document. We start suspending whenever we receive
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// the first STATE_START event with the matching flags (see
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// ::RecvOnStateChange for details), until we get a corresponding STATE_STOP
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// event. In the meantime, if there other onStateChange events, this flag does
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// not affect them. We do this to avoid duplicate onStateChange STATE_START
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// events that happen during process switch. With this flag, we allow
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// onStateChange STATE_START event from the old BrowserParent, but not the
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// same event from the new BrowserParent during a process switch.
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bool mSuspendOnStateStartChangeEvents = false;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_BrowsingContextWebProgress_h
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