0.6.x/js/06_net/02_XNetJSONP.js

   1 /*
   2  * Operaでも非同期リクエストが並列処理できる img-JSONP
   3  * http://developer.cybozu.co.jp/takesako/2007/06/opera_img-jsonp.html
   4  *
   5  * iframe を使った jsonp の読み込みエラー判定の記事、
   6  * JSONPのエラーを判断する は web archive でも観れない
   7  * http://d.hatena.ne.jp/yuushimizu/20090128/1233146321
   8  * TODO JSONPの動的取得+エラー処理
   9  * http://d.hatena.ne.jp/NeoCat/20110206/1296934235
  10  *
  11  * Safari が JavaScript ファイルを動的ロードできない件
  12  * http://www.bricklife.com/weblog/000618.html
  13  *
  14  * IE9でiframe内で遷移した場合window.parentのメソッドを呼べない
  15  * http://kozo002.blogspot.jp/2012/07/ie9iframewindowparent.html
  16  *
  17  * IE6(IETester,localhost) で動かない,
  18  *
  19  * TODO postMessage
  20  */
  21
  22 X.Net.JSONP = {
  23         cb : function( accessKey, jsonString, time, opt_json2FileSize ){
  24                         if( accessKey !== X_NET_JSONP_ACCESS_KEY || !X_NET_JSONPWrapper._busy ) return;
  25
  26                         X_NET_JSONPWrapper._busy = false;
  27
  28                         X_NET_JSONPWrapper
  29                                 .asyncDispatch( 0, {
  30                                         type : jsonString ? X.Event.SUCCESS : X.Event.ERROR,
  31                                         data : jsonString //eval( jsonString )
  32                                 } );
  33
  34                         console.log( 'ms : ' + time + ' speed : ' + ( ( jsonString.length + ( opt_json2FileSize || 0 ) ) / time * 1000 ) + ' バイト/秒.' );
  35                 }
  36 };
  37
  38 var X_NET_JSONP_ACCESS_KEY = Math.random(),
  39
  40         X_NET_JSONP_NinjaIframe;
  41
  42
  43 function X_NET_JSONP_loadScriptInNinjaIframe( url ){
  44         var json2Path     = 'js/libs/json2.js',
  45                 json2FileSize = 18103,
  46                 html;
  47
  48         X_NET_JSONP_NinjaIframe || ( X_NET_JSONP_NinjaIframe = new X.Util.NinjaIframe() );
  49
  50         // TODO '<scr'+'ipt> 化　恐らくアンチウイルスソフトが反応しないための対策
  51
  52         if( X_UA.IE8 ){
  53                 html = [
  54                         // http://blog.livedoor.jp/dankogai/archives/51503830.html
  55                         // Ajax - IE8にもJSON入ってます。使えるとは限らないけど
  56                         // Compatibility mode (別名Quirks mode) では、JSONオブジェクトは無効になります。iframeもだめです
  57                         /*　以下のコードは XP ie8 では動くけど、win8 IE11(8モード)で動かない 開発の便宜を取って,setTimeout を挟む
  58                         '<script>',
  59                                 'function cb(o){window.parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',window.parent.JSON.stringify(o))}',
  60                         '</script>',
  61                         '<script src="', url, '"></script>' */
  62                         '<script id="jp"></script>',
  63                         '<script>',
  64                                 'nw=0;', // なぜか必要,,,
  65                                 'function cb(o){nw-=+new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',parent.JSON.stringify(o),-nw)}',
  66                                 'function tm(){jp.src="', url ,'";nw=+new Date}',
  67                                 'setTimeout(tm,16);',
  68                         '</script>'
  69                 ];
  70         } else
  71         if( X_UA.IE9 ){
  72                 html = [
  73                         '<script id="jp"></script>',
  74                         '<script>',
  75                                 'function cb(o){nw-=+new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw)}',
  76                                 'function tm(){jp.src="', url ,'";nw=+new Date}',
  77                                 'setTimeout(tm,16);',
  78                         '</script>'
  79                 ];
  80         } else
  81         if( window[ 'JSON' ] ){
  82                 html = [
  83                         '<script>',
  84                                 'nw=+new Date;',
  85                                 'function cb(o){if(nw){nw-=+new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw);nw=0}}',
  86                         '</script>',
  87                         '<script src="', url, '"></script>'
  88                 ];
  89         } else
  90         if( X_UA.IE4 || X_UA.MacIE ){
  91                 html = [
  92                         '<script id="jn"></script>',
  93                         '<script id="jp"></script>',
  94                         '<script>',
  95                                 'function cb(o){nw-=new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw-16,', json2FileSize, ')}',
  96                                 'function t1(){document.all.jn.src="', json2Path ,'";setTimeout("t2()",16);nw=+new Date}',
  97                                 'setTimeout("t1()",16);',
  98                                 'function t2(){if(window.JSON){document.all.jp.src="', url ,'"}else{setTimeout("t2()",16)}}',
  99                         '</script>'
 100                 ];
 101         } else
 102         if( X_UA.IE < 8 ){ // ie5-7
 103                 html = [
 104                         '<script id="jn"></script>',
 105                         '<script id="jp"></script>',
 106                         '<script>',
 107                                 'function cb(o){nw-=new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw-16,', json2FileSize, ')}',
 108                                 'function t1(){jn.src="', json2Path ,'";setTimeout(t2,16);nw=+new Date}',
 109                                 'setTimeout(t1,16);',
 110                                 'function t2(){if(window.JSON){jp.src="', url ,'"}else{setTimeout(t2,16)}}',
 111                         '</script>'
 112                 ];
 113         } else {
 114                 html = [
 115                         '<script>',
 116                                 'function cb(o){if(nw){nw-=new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw,', json2FileSize, ');nw=0}}',
 117                                 'nw=+new Date;',
 118                         '</script>',
 119                         '<script src="', json2Path, '"></script>',
 120                         '<script src="', url, '"></script>'
 121                 ];
 122         };
 123
 124         X_NET_JSONP_NinjaIframe
 125                 .refresh( html.join( '' ) )
 126                 .listen( [ X.Event.SUCCESS, X.Event.ERROR ], X_NET_JSONPWrapper, X_NET_JSONP_iframeListener );
 127 };
 128
 129
 130 function X_NET_JSONP_iframeListener( e ){
 131         switch( e.type ){
 132                 case X.Event.SUCCESS :
 133                         console.log( 'iframe onload' );
 134
 135                         break;
 136                 case X.Event.ERROR :
 137                         console.log( 'iframe onerror' );
 138                         X_NET_JSONPWrapper.asyncDispatch( 0, X.Event.ERROR );
 139                         break;
 140         };
 141 };
 142
 143
 144 X_NET_JSONPWrapper = X_Class_override(
 145         new X.EventDispatcher(),
 146         {
 147
 148                 _operaImage   : null, // X.Net.Image();
 149                 _busy         : false,
 150                 _canceled     : false,
 151
 152                 load : function( url, data, timeout ){
 153                         //createURL
 154                         if( X_NET_JSONP_operaImageHandleEvent ){
 155                                 this._operaImage = X.Net.Image( url, false )
 156                                         .listenOnce( [ X.Event.SUCCESS, X.Event.ERROR, X.Event.TIMEOUT ], X_NET_JSONP_operaImageHandleEvent );
 157                         } else {
 158                                 X_NET_JSONP_loadScriptInNinjaIframe( url );
 159                         };
 160
 161                         this._busy = true;
 162                 },
 163
 164                 cancel : function(){
 165                         if( this._operaImage ){
 166                                 this._operaImage
 167                                         .unlisten( [ X.Event.SUCCESS, X.Event.ERROR, X.Event.TIMEOUT ], X_NET_JSONP_operaImageHandleEvent )
 168                                         .cancel();
 169                                 delete this._operaImage;
 170                         } else {
 171                                 this._canceled = true;
 172                         };
 173                 },
 174
 175                 reset : function(){
 176                         this._busy = this._canceled = false;
 177                 }
 178         }
 179 );
 180
 181 function X_NET_JSONP_operaImageHandleEvent( e ){
 182         switch( e.type ){
 183                 case X.Event.SUCCESS :
 184                 case X.Event.ERROR :
 185                         X_NET_JSONP_loadScriptInNinjaIframe( e.src );
 186                         break;
 187                 case X.Event.TIMEOUT :
 188                         X_NET_JSONPWrapper._operaImage
 189                                 .unlisten( [ X.Event.SUCCESS, X.Event.ERROR, X.Event.TIMEOUT ], X_NET_JSONP_operaImageHandleEvent )
 190                                 .reset();
 191                         X_NET_JSONPWrapper.asyncDispatch( 0, X.Event.ERROR );
 192                         break;
 193         };
 194 };
 195 if( !X_UA.Opera ) X_NET_JSONP_operaImageHandleEvent = null;