1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "chrome/browser/download/download_status_updater.h" 6 7 #include "base/logging.h" 8 #include "chrome/browser/download/download_status_updater_delegate.h" 9 #include "chrome/browser/download/download_util.h" 10 11 DownloadStatusUpdater::DownloadStatusUpdater() { 12 } 13 14 DownloadStatusUpdater::~DownloadStatusUpdater() { 15 } 16 17 void DownloadStatusUpdater::AddDelegate( 18 DownloadStatusUpdaterDelegate* delegate) { 19 delegates_.insert(delegate); 20 Update(); 21 } 22 23 void DownloadStatusUpdater::RemoveDelegate( 24 DownloadStatusUpdaterDelegate* delegate) { 25 delegates_.erase(delegate); 26 Update(); 27 } 28 29 void DownloadStatusUpdater::Update() { 30 float progress = 0; 31 bool progress_known = GetProgress(&progress); 32 download_util::UpdateAppIconDownloadProgress( 33 static_cast<int>(GetInProgressDownloadCount()), 34 progress_known, 35 progress); 36 } 37 38 bool DownloadStatusUpdater::GetProgress(float* progress) { 39 *progress = 0; 40 41 int64 received_bytes = 0; 42 int64 total_bytes = 0; 43 for (DelegateSet::iterator i = delegates_.begin(); 44 i != delegates_.end(); ++i) { 45 if (!(*i)->IsDownloadProgressKnown()) 46 return false; 47 received_bytes += (*i)->GetReceivedDownloadBytes(); 48 total_bytes += (*i)->GetTotalDownloadBytes(); 49 } 50 51 if (total_bytes > 0) 52 *progress = static_cast<float>(received_bytes) / total_bytes; 53 return true; 54 } 55 56 int64 DownloadStatusUpdater::GetInProgressDownloadCount() { 57 int64 download_count = 0; 58 for (DelegateSet::iterator i = delegates_.begin(); 59 i != delegates_.end(); ++i) { 60 download_count += (*i)->GetInProgressDownloadCount(); 61 } 62 63 return download_count; 64 } 65
