зеркало из https://github.com/mozilla/gecko-dev.git
101 строка
3.6 KiB
C++
101 строка
3.6 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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#include "nsCycleCollectionParticipant.h"
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namespace mozilla {
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namespace dom {
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class CanonicalBrowsingContext;
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/// Object acting as the nsIWebProgress instance for a BrowsingContext over its
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/// lifetime.
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///
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/// An active toplevel CanonicalBrowsingContext will always have a
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/// BrowsingContextWebProgress, which will be moved between contexts as
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/// BrowsingContextGroup-changing loads are performed.
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///
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/// Subframes will only have a `BrowsingContextWebProgress` if they are loaded
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/// in a content process, and will use the nsDocShell instead if they are loaded
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/// in the parent process, as parent process documents cannot have or be
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/// out-of-process iframes.
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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_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(BrowsingContextWebProgress,
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nsIWebProgress)
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NS_DECL_NSIWEBPROGRESS
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NS_DECL_NSIWEBPROGRESSLISTENER
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explicit BrowsingContextWebProgress(
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CanonicalBrowsingContext* aBrowsingContext);
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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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void ContextDiscarded();
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void ContextReplaced(CanonicalBrowsingContext* aNewContext);
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void SetLoadType(uint32_t aLoadType) { mLoadType = aLoadType; }
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private:
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virtual ~BrowsingContextWebProgress();
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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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// The current BrowsingContext which owns this BrowsingContextWebProgress.
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// This context may change during navigations and may not be fully attached at
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// all times.
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RefPtr<CanonicalBrowsingContext> mCurrentBrowsingContext;
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// The current request being actively loaded by the BrowsingContext. Only set
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// while mIsLoadingDocument is true, and is used to fire STATE_STOP
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// notifications if the BrowsingContext is discarded while the load is
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// ongoing.
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nsCOMPtr<nsIRequest> mLoadingDocumentRequest;
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// The most recent load type observed for this BrowsingContextWebProgress.
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uint32_t mLoadType = 0;
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// Are we currently in the process of loading a document? This is true between
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// the `STATE_START` notification from content and the `STATE_STOP`
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// notification being received. Duplicate `STATE_START` events may be
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// discarded while loading a document to avoid noise caused by process
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// switches.
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bool mIsLoadingDocument = 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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