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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15 if( !X_Net_Image_hasImage ){
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16 alert( 'no Image!' );
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18 if( X_Net_Image_isElement ){
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19 //alert( 'X_Net_Image_isElement ' + X_Net_Image_isElement );
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24 * 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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25 * Image は、X.EventDispatcher で、<img> は X.Node で。
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27 * Opera7 では毎回 image を作る必要あり、src が異なればOK?
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29 X_NET_ImageWrapper = X_Class_override(
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30 !X_Net_Image_isElement ? X_EventDispatcher( X_Net_Image_image ) : Node( X_Net_Image_image ),
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41 load : function( data ){
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43 this.abspath = X.URL.toAbsolutePath( data.url );
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44 this.delay = data.delay || 100;
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45 this.timeout = data.timeout || 5000;
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47 this[ '_rawObject' ].src = this.abspath;
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49 if( X_UA[ 'Opera7' ] && this[ '_rawObject' ].complete ){
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50 this[ 'asyncDispatch' ]( 'load' );
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52 this.timerID = X_Timer_add( this.delay, 0, this, this._detect );
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56 handleEvent : function( e ){
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60 //case 'abort' : // TODO ??
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61 if( this.finish ) return;
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64 this.timerID && X_Timer_remove( this.timerID );
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65 this.timerID = this[ 'asyncDispatch' ]( /*e.type === 'error' ?*/ X_EVENT_ERROR /*: X_EVENT_CANCELED*/ );
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68 // if( finish === true ) return; // これがあると firefox3.6 で駄目、、、
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69 // if( timer ) return; // これがあると safari3.2 で駄目、、、
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72 this.timerID && X_Timer_remove( this.timerID );
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73 if( X_UA[ 'Opera' ] && !this[ '_rawObject' ].complete ){
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74 this.timerID = this[ 'asyncDispatch' ]( X_EVENT_ERROR );
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77 size = X.Util.Image.getActualDimension( !X_Net_Image_isElement ? this.abspath : this );
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78 this.timerID = this[ 'asyncDispatch' ]( {
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79 type : X_EVENT_SUCCESS,
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83 // TODO feedback net speed
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84 // time , this[ '_rawObject' ].fileSize
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87 case X_EVENT_KILL_INSTANCE :
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89 !X_Net_Image_hasImage && this[ 'kill' ](); // if xnode
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94 _detect : function(){
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95 if( this.finish ) return;
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96 if( this[ '_rawObject' ] && this[ '_rawObject' ].complete ){
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99 if( this[ '_rawObject' ].width ) return;
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100 X_Timer_remove( this.timerID );
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101 this.timerID = this[ 'asyncDispatch' ]( X_EVENT_ERROR );
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103 if( this.timeout < ( this.tick += this.delay ) ){
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104 this._busy = false;
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105 this.finish = true;
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106 X_Timer_remove( this.timerID );
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107 this.timerID = this[ 'asyncDispatch' ]( X_EVENT_TIMEOUT );
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111 cancel : function(){
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113 this[ '_rawObject' ] && this[ '_rawObject' ].abort && this[ '_rawObject' ].abort();
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114 // this[ '_rawObject' ].src = '';
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115 this._busy = false;
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116 this.finish = true;
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117 this[ 'asyncDispatch' ]( X_EVENT_CANCELED );
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120 reset : function(){
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121 this.timerID && X_Timer_remove( this.timerID );
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122 //X_Net_Image_isElement ? this[ '_rawObject' ].removeAttribute( 'src' ) : ( this[ '_rawObject' ].src = '' );
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123 this[ '_rawObject' ].src = '';
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125 this._busy = false;
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126 this.finished = false;
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132 X_NET_ImageWrapper[ 'listen' ]( [ 'load', 'error' /*, 'abort'*/, X_EVENT_KILL_INSTANCE ] );
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134 // X_Net_Image_isElement && X_NET_ImageWrapper[ 'appendAt' ]( X.X_Node_systemNode );
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