michael@0: /* -*- Mode: c++; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef NS_ANDROIDHISTORY_H
michael@0: #define NS_ANDROIDHISTORY_H
michael@0: 
michael@0: #include "IHistory.h"
michael@0: #include "nsDataHashtable.h"
michael@0: #include "nsTPriorityQueue.h"
michael@0: #include "nsIRunnable.h"
michael@0: 
michael@0: #define NS_ANDROIDHISTORY_CID \
michael@0:     {0xCCAA4880, 0x44DD, 0x40A7, {0xA1, 0x3F, 0x61, 0x56, 0xFC, 0x88, 0x2C, 0x0B}}
michael@0: 
michael@0: // Max size of History::mRecentlyVisitedURIs
michael@0: #define RECENTLY_VISITED_URI_SIZE 8
michael@0: 
michael@0: // Max size of History::mEmbedURIs
michael@0: #define EMBED_URI_SIZE 128
michael@0: 
michael@0: class nsAndroidHistory : public mozilla::IHistory, public nsIRunnable
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS
michael@0:   NS_DECL_IHISTORY
michael@0:   NS_DECL_NSIRUNNABLE
michael@0: 
michael@0:   /**
michael@0:    * Obtains a pointer that has had AddRef called on it.  Used by the service
michael@0:    * manager only.
michael@0:    */
michael@0:   static nsAndroidHistory* GetSingleton();
michael@0: 
michael@0:   nsAndroidHistory();
michael@0: 
michael@0: private:
michael@0:   static nsAndroidHistory* sHistory;
michael@0: 
michael@0:   nsDataHashtable<nsStringHashKey, nsTArray<mozilla::dom::Link *> *> mListeners;
michael@0:   nsTPriorityQueue<nsString> mPendingURIs;
michael@0: 
michael@0:   nsresult CanAddURI(nsIURI* aURI, bool* canAdd);
michael@0: 
michael@0:   /**
michael@0:    * mRecentlyVisitedURIs remembers URIs which are recently added to the DB,
michael@0:    * to avoid saving these locations repeatedly in a short period.
michael@0:    */
michael@0:   typedef nsAutoTArray<nsCOMPtr<nsIURI>, RECENTLY_VISITED_URI_SIZE>
michael@0:           RecentlyVisitedArray;
michael@0:   RecentlyVisitedArray mRecentlyVisitedURIs;
michael@0:   RecentlyVisitedArray::index_type mRecentlyVisitedURIsNextIndex;
michael@0: 
michael@0:   void AppendToRecentlyVisitedURIs(nsIURI* aURI);
michael@0:   bool IsRecentlyVisitedURI(nsIURI* aURI);
michael@0: 
michael@0:   /**
michael@0:    * mEmbedURIs remembers URIs which are explicitly not added to the DB,
michael@0:    * to avoid wasting time on these locations.
michael@0:    */
michael@0:   typedef nsAutoTArray<nsCOMPtr<nsIURI>, EMBED_URI_SIZE> EmbedArray;
michael@0:   EmbedArray::index_type mEmbedURIsNextIndex;
michael@0:   EmbedArray mEmbedURIs;
michael@0: 
michael@0:   void AppendToEmbedURIs(nsIURI* aURI);
michael@0:   bool IsEmbedURI(nsIURI* aURI);
michael@0: };
michael@0: 
michael@0: #endif