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 iframe 内を他ドメインにして jsonp のセキュリティを強化。他ドメインに jsonp を読み込んで 正しい JSON か？検証後にフレーム間通信で戻す。
  20  */
  21
  22         // TODO chashe
  23         // TODO iframe useful or not. TODO check dynamicIframe
  24         // TODO file: では　http: は使えない
  25
  26 X[ 'Net' ][ 'JSONP' ] = {
  27         'cb' : function( accessKey, jsonString, time, opt_json2FileSize ){
  28                         if( accessKey !== X_NET_JSONP_ACCESS_KEY || !X_NET_JSONPWrapper._busy ) return;
  29
  30                         X_NET_JSONPWrapper._busy = false;
  31
  32                         X_NET_JSONPWrapper
  33                                 [ 'asyncDispatch' ]( {
  34                                         type : jsonString ? X_EVENT_SUCCESS : X_EVENT_ERROR,
  35                                         data : X_String_parseTrustedJsonString( jsonString )
  36                                 } );
  37
  38                         X_Net_JSONP_errorTimerID && X_Timer_remove( X_Net_JSONP_errorTimerID );
  39
  40                         console.log( 'ms : ' + time + ' speed : ' + ( ( jsonString.length + ( opt_json2FileSize || 0 ) ) / time * 1000 ) + ' バイト/秒.' );
  41                 }
  42 };
  43
  44 var X_NET_JSONP_ACCESS_KEY = Math.random(),
  45
  46         X_Net_JSONP_maxOnloadCount,
  47
  48         X_Net_JSONP_onloadCount = 0,
  49
  50         X_Net_JSONP_errorTimerID;
  51
  52 X_TEMP.X_NET_JSONP_init = function(){
  53
  54         delete X_TEMP.X_NET_JSONP_init;
  55
  56         return X_NET_JSONPWrapper = X_Class_override(
  57                 X[ 'Util' ][ 'NinjaIframe' ](),
  58                 {
  59
  60                         _busy         : false,
  61                         _canceled     : false,
  62
  63                         load : function( option ){
  64                                 //createURL
  65                                 var url           = option[ 'url' ],
  66                                         json2Path     = 'js/libs/json2.js',
  67                                         json2FileSize = 18103,
  68                                         html;
  69
  70                                 // 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
  71                                 // document.postMessage()→window.postMessage() (Opera 9.50 build 9841 -)
  72                                 // http://d.hatena.ne.jp/cnrd/20080518/1211099169
  73                                 // 最近の仕様変更(引数のtargetOriginとかMessageEventのoriginとか)にはまだ対応してないみたい
  74
  75                                 if( X_UA[ 'Opera' ] ){
  76                                         html = [
  77                                                 ( window[ 'JSON' ] ? '' : '<script src="' + json2Path + '"></script>' ),
  78                                                 '<script>',
  79                                                         'onunload=function(){im.onload=im.onerror=""};',
  80                                                         'nw=+new Date;',
  81                                                         'function cb(o){if(nw){nw-=+new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw', window[ 'JSON' ] ? json2FileSize : 0 ,');nw=0}}',
  82                                                 '</script>',
  83                                                 '<script id="jp"></script>',
  84                                                 '<img id="im" src="', url, '" onload="jp.src=im.src" onerror="jp.src=im.src">'
  85                                         ];
  86                                         X_Net_JSONP_maxOnloadCount = 2;
  87                                 } else
  88                                 if( X_UA[ 'IE8' ] ){
  89                                         html = [
  90                                                 // JavaScriptでunicode文字列をunescapeする
  91                                                 // http://perutago.seesaa.net/article/202801583.html
  92
  93                                                 // http://blog.livedoor.jp/dankogai/archives/51503830.html
  94                                                 // Ajax - IE8にもJSON入ってます。使えるとは限らないけど
  95                                                 // 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
  96                                                 '<script id="jp"></script>',
  97                                                 '<script>',
  98                                                         'onunload=function(){clearTimeout(id)};',
  99                                                         'nw=0;', // なぜか必要,,,
 100                                                         'function cb(o){nw-=+new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',parent.JSON.stringify(o).replace(/\\\\u([a-fA-F0-9]{4})/g,function(a,b){return String.fromCharCode(parseInt(b,16))}),-nw)}',
 101                                                         //'function cb(o){if(nw){nw-=+new Date;postMessage("', X_NET_JSONP_SEND_MSG_KEY,' "+nw+"|"+parent.JSON.stringify(o).replace(/\\\\u([a-fA-F0-9]{4})/g,function(a,b){return String.fromCharCode(parseInt(b,16))}),"*");nw=0}}',
 102                                                         'function tm(){jp.src="', url ,'";nw=+new Date}',
 103                                                         'id=setTimeout(tm,16);',
 104                                                 '</script>'
 105
 106                                                 /*　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
 107                                                 '<script>',
 108                                                         'function cb(o){window.parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',window.parent.JSON.stringify(o))}',
 109                                                 '</script>',
 110                                                 '<script src="', url, '"></script>' */
 111                                         ];
 112                                         X_Net_JSONP_maxOnloadCount = 2;
 113                                 } else
 114                                 if( X_UA[ 'IE9' ] ){
 115                                         html = [
 116                                                 '<script id="jp"></script>',
 117                                                 '<script>',
 118                                                         'onunload=function(){clearTimeout(id)};',
 119                                                         'function cb(o){nw-=+new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw)}',
 120                                                         'function tm(){jp.src="', url ,'";nw=+new Date}',
 121                                                         'id=setTimeout(tm,16);',
 122                                                 '</script>'
 123                                         ];
 124                                         X_Net_JSONP_maxOnloadCount = 2;
 125                                 } else
 126                                 if( window[ 'JSON' ] ){
 127                                         html = [
 128                                                 '<script>',
 129                                                         'nw=+new Date;',
 130                                                         'function cb(o){if(nw){nw-=+new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw);nw=0}}',
 131                                                         //'function cb(o){if(nw){nw-=+new Date;parent.postMessage("', X_NET_JSONP_SEND_MSG_KEY,' "+nw+"|"+JSON.stringify(o),"', location.origin, '");nw=0}}',
 132                                                 '</script>',
 133                                                 '<script src="', url, '"></script>'
 134                                         ];
 135                                         X_Net_JSONP_maxOnloadCount = 1;
 136                                 } else
 137                                 if( X_UA[ 'IE4' ] || X_UA[ 'MacIE' ] ){
 138                                         html = [
 139                                                 '<script id="jn"></script>',
 140                                                 '<script id="jp"></script>',
 141                                                 '<script>',
 142                                                         'onunload=function(){clearTimeout(id)};',
 143                                                         'function cb(o){nw-=new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw-16,', json2FileSize, ')}',
 144                                                         'function t1(){document.all.jn.src="', json2Path ,'";id=setTimeout("t2()",16);nw=+new Date}',
 145                                                         'id=setTimeout("t1()",16);',
 146                                                         'function t2(){if(window.JSON){document.all.jp.src="', url ,'"}else{id=setTimeout("t2()",16)}}',
 147                                                 '</script>'
 148                                         ];
 149                                         X_Net_JSONP_maxOnloadCount = 3;
 150                                 } else
 151                                 if( X_UA[ 'IE' ] < 8 ){ // ie5-7
 152                                         html = [
 153                                                 '<script id="jn"></script>',
 154                                                 '<script id="jp"></script>',
 155                                                 '<script>',
 156                                                         'onunload=function(){clearTimeout(id)};',
 157                                                         'function cb(o){nw-=new Date;parent.X.Net.JSONP.cb(' + X_NET_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw-16,', json2FileSize, ')}',
 158                                                         'function t1(){jn.src="', json2Path ,'";id=setTimeout(t2,16);nw=+new Date}',
 159                                                         'id=setTimeout(t1,16);',
 160                                                         'function t2(){if(window.JSON){jp.src="', url ,'"}else{id=setTimeout(t2,16)}}',
 161                                                 '</script>'
 162                                         ];
 163                                         X_Net_JSONP_maxOnloadCount = 3;
 164                                 } else {
 165                                         html = [
 166                                                 '<script>',
 167                                                         '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}}',
 168                                                         'nw=+new Date;',
 169                                                 '</script>',
 170                                                 '<script src="', json2Path, '"></script>',
 171                                                 '<script src="', url, '"></script>'
 172                                         ];
 173                                         X_Net_JSONP_maxOnloadCount = 2;
 174                                 };
 175
 176                                 X_NET_JSONPWrapper
 177                                         [ 'refresh' ]( html.join( '' ) )
 178                                         [ 'listen' ]( [ 'ninjaload', 'ninjaerror' ], X_NET_JSONP_iframeListener );
 179
 180                                 X_NET_JSONPWrapper._busy = true;
 181                         },
 182
 183                         cancel : function(){
 184                                 X_NET_JSONPWrapper.reset();
 185                                 X_NET_JSONPWrapper._canceled = true;
 186                         },
 187
 188                         reset : function(){
 189                                 X_NET_JSONPWrapper._busy = X_NET_JSONPWrapper._canceled = false;
 190                                 X_Net_JSONP_onloadCount = 0;
 191                                 X_NET_JSONPWrapper[ 'unlisten' ]( [ 'ninjaload', 'ninjaerror' ], X_NET_JSONP_iframeListener );
 192                                 X_NET_JSONPWrapper[ 'refresh' ]( '' );
 193                                 X_Net_JSONP_errorTimerID && X_Timer_remove( X_Net_JSONP_errorTimerID );
 194                         }
 195                 }
 196         );
 197 };
 198
 199 function X_NET_JSONP_iframeListener( e ){
 200         switch( e.type ){
 201                 case 'ninjaload' :
 202                         console.log( 'iframe onload, but ' + X_Net_JSONP_onloadCount + ' < ' + X_Net_JSONP_maxOnloadCount );
 203                         if( ++X_Net_JSONP_onloadCount < X_Net_JSONP_maxOnloadCount ) return;
 204
 205                         // TODO callback が無ければ error -> timeout を観る?
 206                         X_Net_JSONP_errorTimerID = X_NET_JSONPWrapper[ 'asyncDispatch' ]( 1000, X_EVENT_ERROR );
 207                         break;
 208                 case 'ninjaerror' :
 209                         console.log( 'iframe onerror' );
 210                         X_NET_JSONPWrapper[ 'asyncDispatch' ]( X_EVENT_ERROR );
 211                         break;
 212         };
 213         return X_Callback_UN_LISTEN;
 214 };