4 * URL: http://d.hatena.ne.jp/uupaa/20080413/1208067631
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5 * AUTHOR: uupaa.js@gmail.com
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9 var X_Net_Image_hasImage = !!window[ 'Image' ],
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10 X_Net_Image_image = X_Net_Image_hasImage && new Image(),
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11 // IE では厳密には HTMLImageElement ではなく、appendChild してもサイズが取れず、removeChild に失敗する
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12 X_Net_Image_isElement = !( X_UA[ 'IE' ] < 9 ) && X_Type_isHTMLElement( X_Net_Image_image );
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16 * new Image() のときに Image オブジェクトを作るもの(IE8-)と、HTMLImageElement を作るものがある。
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17 * Image は、X.EventDispatcher で、<img> は X.Node で。
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20 X_TEMP.X_NET_Image_init = function(){
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21 X_NET_ImageWrapper = X_Class_override(
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22 X_Net_Image_isElement ? Node( X_Net_Image_image ) : X_EventDispatcher( X_Net_Image_image ),
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23 X_TEMP.X_NET_Image_params
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26 X_NET_ImageWrapper[ 'listen' ]( [ 'load', 'error' /*, 'abort'*/, X_EVENT_KILL_INSTANCE ], X_NET_Image_handleEvent );
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28 delete X_TEMP.X_NET_Image_init;
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29 delete X_TEMP.X_NET_Image_params;
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31 return X_NET_ImageWrapper;
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34 X_TEMP.X_NET_Image_params = {
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43 load : function( data ){
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45 this.abspath = X_URL_toAbsolutePath( data[ 'url' ] );
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46 this.delay = data[ 'delay' ] || 100;
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47 this.timeout = data[ 'timeout' ] || 5000;
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49 this[ '_rawObject' ].src = this.abspath;
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51 if( X_UA[ 'Opera7' ] && this[ '_rawObject' ].complete ){
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52 this[ 'asyncDispatch' ]( 'load' );
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54 this.timerID = X_Timer_add( this.delay, 0, this, X_NET_Image_detect );
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58 cancel : function(){
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59 var raw = this[ '_rawObject' ];
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61 raw && raw.abort && raw.abort();
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62 // this[ '_rawObject' ].src = '';
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68 this.timerID && X_Timer_remove( this.timerID );
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69 //X_Net_Image_isElement ? this[ '_rawObject' ].removeAttribute( 'src' ) : ( this[ '_rawObject' ].src = '' );
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70 this[ '_rawObject' ].src = '';
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73 this.finished = false;
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78 function X_NET_Image_detect(){
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79 var raw = this[ '_rawObject' ];
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81 if( this.finish ) return;
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82 if( raw && raw.complete ){
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85 if( raw.width ) return;
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86 X_Timer_remove( this.timerID );
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87 this.timerID = this[ 'asyncDispatch' ]( X_EVENT_ERROR );
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89 if( this.timeout < ( this.tick += this.delay ) ){
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92 X_Timer_remove( this.timerID );
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93 this.timerID = this[ 'asyncDispatch' ]( X_EVENT_TIMEOUT );
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97 function X_NET_Image_handleEvent( e ){
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102 //case 'abort' : // TODO ??
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103 if( this.finish ) return;
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104 this._busy = false;
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105 this.finish = true;
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106 this.timerID && X_Timer_remove( this.timerID );
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107 this.timerID = this[ 'asyncDispatch' ]( /*e.type === 'error' ?*/ X_EVENT_ERROR /*: X_EVENT_CANCELED*/ );
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111 // if( finish === true ) return; // これがあると firefox3.6 で駄目、、、
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112 // if( timer ) return; // これがあると safari3.2 で駄目、、、
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113 this._busy = false;
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114 this.finish = true;
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115 this.timerID && X_Timer_remove( this.timerID );
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116 if( X_UA[ 'Opera' ] && !this[ '_rawObject' ].complete ){
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117 this.timerID = this[ 'asyncDispatch' ]( X_EVENT_ERROR );
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121 size = X_Util_Image_getActualDimension( !X_Net_Image_isElement ? this.abspath : this );
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122 this.timerID = this[ 'asyncDispatch' ]( {
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123 'type' : X_EVENT_SUCCESS,
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124 'src' : this.abspath,
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127 // TODO feedback net speed
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128 // time , this[ '_rawObject' ].fileSize
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132 case X_EVENT_KILL_INSTANCE :
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134 !X_Net_Image_hasImage && this[ 'kill' ](); // if xnode
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140 // X_Net_Image_isElement && X_NET_ImageWrapper[ 'appendAt' ]( X.X_Node_systemNode );
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