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29 | 0 | package org.vostokframework.domain.loading.states.fileloader.adapters |
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{ |
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import org.vostokframework.domain.loading.states.fileloader.IDataLoader; |
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import org.vostokframework.domain.loading.states.fileloader.algorithms.events.FileLoadingAlgorithmMediaEvent; |
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import flash.events.Event; |
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import flash.events.ProgressEvent; |
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import flash.events.TimerEvent; |
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import flash.net.NetStream; |
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import flash.utils.Timer; |
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public class ProgressNetStream extends DataLoaderBehavior |
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{ |
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private var _bufferCompleteEventDispatched:Boolean; |
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private var _completeEventDispatched:Boolean; |
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private var _netStream:NetStream; |
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private var _openEventDispatched:Boolean; |
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private var _percentToBuffer:int; |
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private var _timerProgress:Timer; |
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public function ProgressNetStream(wrappedDataLoader:IDataLoader, netStream:NetStream, percentToBuffer:int = 0) |
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{ |
66 | 0 | super(wrappedDataLoader); |
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68 | 0 | if (!netStream) throw new ArgumentError("Argument <netStream> must not be null."); |
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70 | 0 | _netStream = netStream; |
71 | 0 | _percentToBuffer = percentToBuffer; |
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73 | 0 | _timerProgress = new Timer(50); |
74 | 0 | } |
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override public function cancel(): void |
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{ |
78 | 0 | stopTimer(); |
79 | 0 | super.cancel(); |
80 | 0 | } |
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override public function load(): void |
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{ |
87 | 0 | super.load(); |
88 | 0 | startTimer(); |
89 | 0 | } |
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override public function stop():void |
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{ |
96 | 0 | stopTimer(); |
97 | 0 | _completeEventDispatched = false; |
98 | 0 | _bufferCompleteEventDispatched = false; |
99 | 0 | _openEventDispatched = false; |
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101 | 0 | super.stop(); |
102 | 0 | } |
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override protected function doDispose():void |
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{ |
106 | 0 | stopTimer(); |
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108 | 0 | _netStream = null; |
109 | 0 | _timerProgress = null; |
110 | 0 | } |
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private function dispatchProgressEvent():void |
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{ |
114 | 0 | _netStream.dispatchEvent(new ProgressEvent(ProgressEvent.PROGRESS, false, false, _netStream.bytesLoaded, _netStream.bytesTotal)); |
115 | 0 | } |
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private function loadingBufferComplete():void |
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{ |
119 | 0 | _bufferCompleteEventDispatched = true; |
120 | 0 | dispatchProgressEvent(); |
121 | 0 | _netStream.dispatchEvent(new FileLoadingAlgorithmMediaEvent(FileLoadingAlgorithmMediaEvent.BUFFER_COMPLETE)); |
122 | 0 | } |
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private function loadingComplete():void |
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{ |
126 | 0 | stopTimer(); |
127 | 0 | _completeEventDispatched = true; |
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130 | 0 | _netStream.dispatchEvent(new ProgressEvent(ProgressEvent.PROGRESS, false, false, _netStream.bytesTotal, _netStream.bytesTotal)); |
131 | 0 | _netStream.dispatchEvent(new Event(Event.COMPLETE)); |
132 | 0 | } |
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private function loadingOpen():void |
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{ |
136 | 0 | _openEventDispatched = true; |
137 | 0 | _netStream.dispatchEvent(new Event(Event.OPEN)); |
138 | 0 | } |
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private function progressHandler(event:TimerEvent):void |
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{ |
142 | 0 | var bufferBytesTotal:int = (_netStream.bytesTotal * _percentToBuffer) / 100; |
143 | 0 | var currentBufferPercent:int = (_netStream.bytesTotal > 0) ? Math.floor((_netStream.bytesLoaded * 100) / bufferBytesTotal) : 0; |
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145 | 0 | if (!_openEventDispatched) |
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{ |
147 | 0 | loadingOpen(); |
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} |
149 | 0 | else if (_percentToBuffer > 0 && currentBufferPercent >= _percentToBuffer && !_bufferCompleteEventDispatched) |
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{ |
151 | 0 | loadingBufferComplete(); |
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} |
153 | 0 | else if (_netStream.bytesLoaded == _netStream.bytesTotal && _netStream.bytesLoaded > 0 && !_completeEventDispatched) |
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{ |
155 | 0 | loadingComplete(); |
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} |
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else |
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{ |
159 | 0 | dispatchProgressEvent(); |
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} |
161 | 0 | } |
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private function startTimer():void |
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{ |
165 | 0 | _timerProgress.addEventListener(TimerEvent.TIMER, progressHandler, false, 0, true); |
166 | 0 | _timerProgress.start(); |
167 | 0 | } |
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private function stopTimer():void |
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{ |
171 | 0 | _timerProgress.stop(); |
172 | 0 | _timerProgress.reset(); |
173 | 0 | _timerProgress.removeEventListener(TimerEvent.TIMER, progressHandler, false); |
174 | 0 | } |
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} |
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} |