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      1 /*
      2  * Copyright (C) 2007 Apple Inc.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef ProgressTracker_h
     27 #define ProgressTracker_h
     28 
     29 #include "platform/heap/Handle.h"
     30 #include "wtf/FastAllocBase.h"
     31 #include "wtf/Forward.h"
     32 #include "wtf/HashMap.h"
     33 #include "wtf/Noncopyable.h"
     34 #include "wtf/OwnPtr.h"
     35 
     36 namespace blink {
     37 
     38 class LocalFrame;
     39 class ResourceResponse;
     40 struct ProgressItem;
     41 
     42 // FIXME: This is only used on Android. Android is the only Chrome
     43 // browser which shows a progress bar during loading.
     44 // We should find a better way for Android to get this data and remove this!
     45 class ProgressTracker FINAL : public NoBaseWillBeGarbageCollectedFinalized<ProgressTracker> {
     46     WTF_MAKE_NONCOPYABLE(ProgressTracker); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
     47 public:
     48     static PassOwnPtrWillBeRawPtr<ProgressTracker> create(LocalFrame*);
     49 
     50     ~ProgressTracker();
     51     void trace(Visitor*);
     52     void dispose();
     53 
     54     double estimatedProgress() const;
     55 
     56     void progressStarted();
     57     void progressCompleted();
     58 
     59     void incrementProgress(unsigned long identifier, const ResourceResponse&);
     60     void incrementProgress(unsigned long identifier, const char*, int);
     61     void completeProgress(unsigned long identifier);
     62 
     63     long long totalPageAndResourceBytesToLoad() const { return m_totalPageAndResourceBytesToLoad; }
     64     long long totalBytesReceived() const { return m_totalBytesReceived; }
     65 
     66 private:
     67     explicit ProgressTracker(LocalFrame*);
     68 
     69     void reset();
     70 
     71     RawPtrWillBeMember<LocalFrame> m_frame;
     72     bool m_inProgress;
     73     long long m_totalPageAndResourceBytesToLoad;
     74     long long m_totalBytesReceived;
     75     double m_lastNotifiedProgressValue;
     76     double m_lastNotifiedProgressTime;
     77     double m_progressNotificationInterval;
     78     double m_progressNotificationTimeInterval;
     79     bool m_finalProgressChangedSent;
     80     double m_progressValue;
     81 
     82     HashMap<unsigned long, OwnPtr<ProgressItem> > m_progressItems;
     83 };
     84 
     85 }
     86 
     87 #endif
     88