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

   1 //{+jsonp"jsonpによるajax"(jsonpによるクロスドメイン通信。)[+net,+ninjaiframe]
   2
   3 /*
   4  * Operaでも非同期リクエストが並列処理できる img-JSONP
   5  * http://developer.cybozu.co.jp/takesako/2007/06/opera_img-jsonp.html
   6  *
   7  * iframe を使った jsonp の読み込みエラー判定の記事、
   8  * https://web.archive.org/web/20120917100043/http://d.hatena.ne.jp/yuushimizu/20090128/1233146321
   9  * TODO JSONPの動的取得+エラー処理
  10  * http://d.hatena.ne.jp/NeoCat/20110206/1296934235
  11  *
  12  * Safari が JavaScript ファイルを動的ロードできない件
  13  * http://www.bricklife.com/weblog/000618.html
  14  *
  15  * IE9でiframe内で遷移した場合window.parentのメソッドを呼べない
  16  * http://kozo002.blogspot.jp/2012/07/ie9iframewindowparent.html
  17  *
  18  * IE6(IETester,localhost) で動かない,
  19  *
  20  * 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。
  21  */
  22
  23         // TODO chashe
  24         // TODO iframe useful or not. TODO check dynamicIframe
  25         // TODO file: では　http: は使えない
  26
  27 X_TEMP.X_JSONP_cb = function( accessKey, jsonString, time, opt_json2FileSize ){
  28                         if( accessKey !== X_JSONP_ACCESS_KEY || !X_JSONP._busy ) return;
  29
  30                         X_JSONP._busy = false;
  31
  32                         X_JSONP
  33                                 [ 'asyncDispatch' ]( {
  34                                         type     : jsonString ? X_EVENT_SUCCESS : X_EVENT_ERROR,
  35                                         response : X_JSON_parseTrustableString( jsonString )
  36                                 } );
  37
  38                         X_JSONP_errorTimerID && X_Timer_remove( X_JSONP_errorTimerID );
  39
  40                         console.log( 'ms : ' + time + ' speed : ' + ( ( jsonString.length + ( opt_json2FileSize || 0 ) ) / time * 1000 ) + ' バイト/秒.' );
  41         };
  42
  43 var X_JSONP_ACCESS_KEY = Math.random(),
  44
  45         X_JSONP_maxOnloadCount,
  46
  47         X_JSONP_onloadCount = 0,
  48
  49         X_JSONP_errorTimerID;
  50
  51 X_TEMP.X_JSONP_init = function(){
  52         X[ 'Net' ][ '__json_cb__' ] = X_TEMP.X_JSONP_cb;
  53
  54         X_JSONP = X_Class_override( X_NinjaIframe(), X_TEMP.X_JSONP_params );
  55
  56         delete X_TEMP.X_JSONP_cb;
  57         delete X_TEMP.X_JSONP_init;
  58         delete X_TEMP.X_JSONP_params;
  59
  60         return X_JSONP;
  61 };
  62
  63 X_TEMP.X_JSONP_params = {
  64
  65                         _busy         : false,
  66                         _canceled     : false,
  67
  68                         load : function( option ){
  69                                 //createURL
  70                                 var url           = option[ 'url' ],
  71                                         params        = option[ 'params' ],
  72                                         callback      = option[ 'callbackName' ],
  73                                         charset       = option[ 'charset' ],
  74                                         json2Path     = window.RegExp ? 'js/libs/json2.js' : 'js/libs/json2_regfree.js',
  75                                         json2FileSize = 18103,
  76                                         html;
  77
  78                                 // file プロトコルで外部アクセスの禁止
  79                                 if( !X_URL_isSameProtocol( url ) ){
  80                                         return X_JSONP[ 'asyncDispatch' ]( X_EVENT_ERROR );
  81                                 };
  82
  83                                 url = X_URL_create( url, params );
  84
  85                                 if( !callback && !( callback = X_URL_paramToObj( url.split( '?' )[ 1 ] )[ 'callback' ] ) ){
  86                                         url += '&callback=cb';
  87                                         callback = 'cb';
  88                                 };
  89
  90                                 charset = charset ? ' charset="' + charset + '"' : '';
  91
  92                                 // 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
  93                                 // document.postMessage()→window.postMessage() (Opera 9.50 build 9841 -)
  94                                 // http://d.hatena.ne.jp/cnrd/20080518/1211099169
  95                                 // 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
  96
  97                                 if( X_UA[ 'Opera' ] ){
  98                                         html = [
  99                                                 ( window[ 'JSON' ] ? '' : '<script src="' + json2Path + '"></script>' ),
 100                                                 '<script>',
 101                                                         'onunload=function(){im.onload=im.onerror=""};',
 102                                                         'nw=+new Date;',
 103                                                         'function ', callback, '(o){if(nw){nw-=+new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw', window[ 'JSON' ] ? json2FileSize : 0 ,');nw=0}}',
 104                                                 '</script>',
 105                                                 '<script', charset, ' id="jp"></script>',
 106                                                 '<img id="im" src="', url, '" onload="jp.src=im.src" onerror="jp.src=im.src">'
 107                                         ];
 108                                         X_JSONP_maxOnloadCount = 2;
 109                                 } else
 110                                 if( X_UA[ 'IE8' ] ){
 111                                         html = [
 112                                                 '<script', charset, ' id="jp"></script>',
 113                                                 '<script>',
 114                                                         'onunload=function(){clearTimeout(id)};',
 115                                                         'nw=0;', // なぜか必要,,,
 116                                                         'function ', callback, '(o){nw-=+new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',parent.X.JSON.stringify(o),-nw)}',
 117                                                         //'function ', callback, '(o){if(nw){nw-=+new Date;postMessage("', X_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}}',
 118                                                         'function tm(){jp.src="', url ,'";nw=+new Date}',
 119                                                         'id=setTimeout(tm,16);',
 120                                                 '</script>'
 121
 122                                                 /*　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
 123                                                 '<script>',
 124                                                         'function ', callback, '(o){window.parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',window.parent.JSON.stringify(o))}',
 125                                                 '</script>',
 126                                                 '<script src="', url, '"></script>' */
 127                                         ];
 128                                         X_JSONP_maxOnloadCount = 2;
 129                                 } else
 130                                 if( X_UA[ 'IE9' ] ){
 131                                         html = [
 132                                                 '<script', charset, ' id="jp"></script>',
 133                                                 '<script>',
 134                                                         'onunload=function(){clearTimeout(id)};',
 135                                                         'function ', callback, '(o){nw-=+new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw)}',
 136                                                         'function tm(){jp.src="', url ,'";nw=+new Date}',
 137                                                         'id=setTimeout(tm,16);',
 138                                                 '</script>'
 139                                         ];
 140                                         X_JSONP_maxOnloadCount = 2;
 141                                 } else
 142                                 if( window[ 'JSON' ] ){
 143                                         html = [
 144                                                 '<script>',
 145                                                         'nw=+new Date;',
 146                                                         'function ', callback, '(o){if(nw){nw-=+new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw);nw=0}}',
 147                                                         //'function ', callback, '(o){if(nw){nw-=+new Date;parent.postMessage("', X_JSONP_SEND_MSG_KEY,' "+nw+"|"+JSON.stringify(o),"', location.origin, '");nw=0}}',
 148                                                 '</script>',
 149                                                 '<script', charset, ' src="', url, '"></script>'
 150                                         ];
 151                                         X_JSONP_maxOnloadCount = 1;
 152                                 } else
 153                                 if( X_UA[ 'IE4' ] || X_UA[ 'MacIE' ] ){
 154                                         html = [
 155                                                 '<script id="jn"></script>',
 156                                                 '<script', charset, ' id="jp"></script>',
 157                                                 '<script>',
 158                                                         'onunload=function(){clearTimeout(id)};',
 159                                                         'function ', callback, '(o){nw-=new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw-16,', json2FileSize, ')}',
 160                                                         'function t1(){document.all.jn.src="', json2Path ,'";id=setTimeout("t2()",16);nw=+new Date}',
 161                                                         'id=setTimeout("t1()",16);',
 162                                                         'function t2(){if(window.JSON){document.all.jp.src="', url ,'"}else{id=setTimeout("t2()",16)}}',
 163                                                 '</script>'
 164                                         ];
 165                                         X_JSONP_maxOnloadCount = 3;
 166                                 } else
 167                                 if( X_UA[ 'IE' ] < 8 ){ // ie5-7
 168                                         html = [
 169                                                 '<script id="jn"></script>',
 170                                                 '<script', charset, ' id="jp"></script>',
 171                                                 '<script>',
 172                                                         'onunload=function(){clearTimeout(id)};',
 173                                                         'function ', callback, '(o){nw-=new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw-16,', json2FileSize, ')}',
 174                                                         'function t1(){jn.src="', json2Path ,'";id=setTimeout(t2,16);nw=+new Date}',
 175                                                         'id=setTimeout(t1,16);',
 176                                                         'function t2(){if(window.JSON){jp.src="', url ,'"}else{id=setTimeout(t2,16)}}',
 177                                                 '</script>'
 178                                         ];
 179                                         X_JSONP_maxOnloadCount = 3;
 180                                 } else {
 181                                         html = [
 182                                                 '<script>',
 183                                                         'function ', callback, '(o){if(nw){nw-=new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw,', json2FileSize, ');nw=0}}',
 184                                                         'nw=+new Date;',
 185                                                 '</script>',
 186                                                 '<script src="', json2Path, '"></script>',
 187                                                 '<script', charset, ' src="', url, '"></script>'
 188                                         ];
 189                                         X_JSONP_maxOnloadCount = 2;
 190                                 };
 191
 192                                 X_JSONP
 193                                         [ 'refresh' ]( html.join( '' ) )
 194                                         [ 'listen' ]( [ 'ninjaload', 'ninjaerror' ], X_JSONP_iframeListener );
 195
 196                                 X_JSONP._busy = true;
 197                         },
 198
 199                         cancel : function(){
 200                                 X_JSONP.reset();
 201                                 X_JSONP._canceled = true;
 202                         },
 203
 204                         reset : function(){
 205                                 X_JSONP._busy = X_JSONP._canceled = false;
 206                                 X_JSONP[ 'unlisten' ]( [ 'ninjaload', 'ninjaerror' ], X_JSONP_iframeListener );
 207                                 X_JSONP[ 'refresh' ]( '' );
 208                                 X_JSONP_errorTimerID && X_Timer_remove( X_JSONP_errorTimerID );
 209                                 X_JSONP_errorTimerID = X_JSONP_onloadCount = 0;
 210                         }
 211                 };
 212
 213 function X_JSONP_iframeListener( e ){
 214         switch( e.type ){
 215                 case 'ninjaload' :
 216                         console.log( 'iframe onload, but ' + X_JSONP_onloadCount + ' < ' + X_JSONP_maxOnloadCount );
 217                         if( ++X_JSONP_onloadCount < X_JSONP_maxOnloadCount ) return;
 218
 219                         // TODO callback が無ければ error -> timeout を観る?
 220                         X_JSONP_errorTimerID = X_JSONP[ 'asyncDispatch' ]( 1000, X_EVENT_ERROR );
 221                         break;
 222                 case 'ninjaerror' :
 223                         console.log( 'iframe onerror' );
 224                         X_JSONP[ 'asyncDispatch' ]( X_EVENT_ERROR );
 225                         break;
 226         };
 227         return X_CALLBACK_UN_LISTEN;
 228 };