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 "Timer.h" 30#include <wtf/Forward.h> 31#include <wtf/HashMap.h> 32#include <wtf/Noncopyable.h> 33#include <wtf/OwnPtr.h> 34#include <wtf/RefPtr.h> 35 36namespace WebCore { 37 38class Frame; 39class ResourceResponse; 40struct ProgressItem; 41 42class ProgressTracker { 43 WTF_MAKE_NONCOPYABLE(ProgressTracker); WTF_MAKE_FAST_ALLOCATED; 44public: 45 ~ProgressTracker(); 46 47 static PassOwnPtr<ProgressTracker> create(); 48 static unsigned long createUniqueIdentifier(); 49 50 double estimatedProgress() const; 51 52 void progressStarted(Frame*); 53 void progressCompleted(Frame*); 54 55 void incrementProgress(unsigned long identifier, const ResourceResponse&); 56 void incrementProgress(unsigned long identifier, const char*, int); 57 void completeProgress(unsigned long identifier); 58 59 long long totalPageAndResourceBytesToLoad() const { return m_totalPageAndResourceBytesToLoad; } 60 long long totalBytesReceived() const { return m_totalBytesReceived; } 61 62 bool isMainLoadProgressing() const; 63 64private: 65 ProgressTracker(); 66 67 void reset(); 68 void finalProgressComplete(); 69 70 void progressHeartbeatTimerFired(Timer<ProgressTracker>*); 71 72 static unsigned long s_uniqueIdentifier; 73 74 long long m_totalPageAndResourceBytesToLoad; 75 long long m_totalBytesReceived; 76 double m_lastNotifiedProgressValue; 77 double m_lastNotifiedProgressTime; 78 double m_progressNotificationInterval; 79 double m_progressNotificationTimeInterval; 80 bool m_finalProgressChangedSent; 81 double m_progressValue; 82 RefPtr<Frame> m_originatingProgressFrame; 83 84 int m_numProgressTrackedFrames; 85 HashMap<unsigned long, OwnPtr<ProgressItem> > m_progressItems; 86 87 Timer<ProgressTracker> m_progressHeartbeatTimer; 88 unsigned m_heartbeatsWithNoProgress; 89 long long m_totalBytesReceivedBeforePreviousHeartbeat; 90}; 91 92} 93 94#endif 95