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5949af2c3b
Behind a pref to ensure that we can turn this off pretty easily if it has perf impact. I want to leave the repainting stuff to another bug to land separately, to track potential (though I hope not!) perf regressions more easily. Differential Revision: https://phabricator.services.mozilla.com/D50704 --HG-- extra : moz-landing-system : lando
66 lines
2.0 KiB
C++
66 lines
2.0 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_BaseHistory_h
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#define mozilla_BaseHistory_h
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#include "IHistory.h"
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#include "mozilla/Result.h"
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/* A base class for history implementations that implement link coloring. */
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namespace mozilla {
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class BaseHistory : public IHistory {
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public:
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nsresult RegisterVisitedCallback(nsIURI*, dom::Link*) final;
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void UnregisterVisitedCallback(nsIURI*, dom::Link*) final;
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void NotifyVisited(nsIURI*, VisitedStatus) final;
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protected:
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static constexpr const size_t kTrackedUrisInitialSize = 64;
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BaseHistory() : mTrackedURIs(kTrackedUrisInitialSize) {}
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// Starts a visited query, that eventually could call NotifyVisited if
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// appropriate.
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virtual Result<Ok, nsresult> StartVisitedQuery(nsIURI*) = 0;
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// Cancels a visited query, if it is at all possible, because we know we won't
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// use the results anymore.
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virtual void CancelVisitedQueryIfPossible(nsIURI*) = 0;
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using ObserverArray = nsTObserverArray<dom::Link*>;
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struct ObservingLinks {
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ObserverArray mLinks;
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VisitedStatus mStatus = VisitedStatus::Unknown;
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size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const {
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return mLinks.ShallowSizeOfExcludingThis(aMallocSizeOf);
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}
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};
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private:
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/**
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* Mark all links for the given URI in the given document as visited. Used
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* within NotifyVisited.
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*/
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void NotifyVisitedForDocument(nsIURI*, dom::Document*, VisitedStatus);
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/**
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* Dispatch a runnable for the document passed in which will call
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* NotifyVisitedForDocument with the correct URI and Document.
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*/
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void DispatchNotifyVisited(nsIURI*, dom::Document*, VisitedStatus);
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protected:
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// A map from URI to links that depend on that URI, and whether that URI is
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// known-to-be-visited-or-unvisited already.
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nsDataHashtable<nsURIHashKey, ObservingLinks> mTrackedURIs;
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};
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} // namespace mozilla
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#endif
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