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                                         callback      = option[ 'callbackName' ],
  72                                         charset       = option[ 'charset' ],
  73                                         json2Path     = window.RegExp ? 'js/libs/json2.js' : 'js/libs/json2_regfree.js',
  74                                         json2FileSize = 18103,
  75                                         html;
  76
  77                                 // file プロトコルで外部アクセスの禁止
  78                                 if( !X_URL_isSameProtocol( url ) ){
  79                                         return X_JSONP[ 'asyncDispatch' ]( X_EVENT_ERROR );
  80                                 };
  81
  82                                 if( !callback && !( callback = X_URL_paramToObj( url.split( '?' )[ 1 ] )[ 'callback' ] ) ){
  83                                         url += '&callback=cb';
  84                                         callback = 'cb';
  85                                 };
  86
  87                                 charset = charset ? ' charset="' + charset + '"' : '';
  88
  89                                 // 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
  90                                 // document.postMessage()→window.postMessage() (Opera 9.50 build 9841 -)
  91                                 // http://d.hatena.ne.jp/cnrd/20080518/1211099169
  92                                 // 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
  93
  94                                 if( X_UA[ 'Opera' ] ){
  95                                         html = [
  96                                                 ( window[ 'JSON' ] ? '' : '<script src="' + json2Path + '"></script>' ),
  97                                                 '<script>',
  98                                                         'onunload=function(){im.onload=im.onerror=""};',
  99                                                         'nw=+new Date;',
 100                                                         '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}}',
 101                                                 '</script>',
 102                                                 '<script', charset, ' id="jp"></script>',
 103                                                 '<img id="im" src="', url, '" onload="jp.src=im.src" onerror="jp.src=im.src">'
 104                                         ];
 105                                         X_JSONP_maxOnloadCount = 2;
 106                                 } else
 107                                 if( X_UA[ 'IE8' ] ){
 108                                         html = [
 109                                                 '<script', charset, ' id="jp"></script>',
 110                                                 '<script>',
 111                                                         'onunload=function(){clearTimeout(id)};',
 112                                                         'nw=0;', // なぜか必要,,,
 113                                                         'function ', callback, '(o){nw-=+new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',parent.X.JSON.stringify(o),-nw)}',
 114                                                         //'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}}',
 115                                                         'function tm(){jp.src="', url ,'";nw=+new Date}',
 116                                                         'id=setTimeout(tm,16);',
 117                                                 '</script>'
 118
 119                                                 /*　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
 120                                                 '<script>',
 121                                                         'function ', callback, '(o){window.parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',window.parent.JSON.stringify(o))}',
 122                                                 '</script>',
 123                                                 '<script src="', url, '"></script>' */
 124                                         ];
 125                                         X_JSONP_maxOnloadCount = 2;
 126                                 } else
 127                                 if( X_UA[ 'IE9' ] ){
 128                                         html = [
 129                                                 '<script', charset, ' id="jp"></script>',
 130                                                 '<script>',
 131                                                         'onunload=function(){clearTimeout(id)};',
 132                                                         'function ', callback, '(o){nw-=+new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw)}',
 133                                                         'function tm(){jp.src="', url ,'";nw=+new Date}',
 134                                                         'id=setTimeout(tm,16);',
 135                                                 '</script>'
 136                                         ];
 137                                         X_JSONP_maxOnloadCount = 2;
 138                                 } else
 139                                 if( window[ 'JSON' ] ){
 140                                         html = [
 141                                                 '<script>',
 142                                                         'nw=+new Date;',
 143                                                         'function ', callback, '(o){if(nw){nw-=+new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw);nw=0}}',
 144                                                         //'function ', callback, '(o){if(nw){nw-=+new Date;parent.postMessage("', X_JSONP_SEND_MSG_KEY,' "+nw+"|"+JSON.stringify(o),"', location.origin, '");nw=0}}',
 145                                                 '</script>',
 146                                                 '<script', charset, ' src="', url, '"></script>'
 147                                         ];
 148                                         X_JSONP_maxOnloadCount = 1;
 149                                 } else
 150                                 if( X_UA[ 'IE4' ] || X_UA[ 'MacIE' ] ){
 151                                         html = [
 152                                                 '<script id="jn"></script>',
 153                                                 '<script', charset, ' id="jp"></script>',
 154                                                 '<script>',
 155                                                         'onunload=function(){clearTimeout(id)};',
 156                                                         'function ', callback, '(o){nw-=new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw-16,', json2FileSize, ')}',
 157                                                         'function t1(){document.all.jn.src="', json2Path ,'";id=setTimeout("t2()",16);nw=+new Date}',
 158                                                         'id=setTimeout("t1()",16);',
 159                                                         'function t2(){if(window.JSON){document.all.jp.src="', url ,'"}else{id=setTimeout("t2()",16)}}',
 160                                                 '</script>'
 161                                         ];
 162                                         X_JSONP_maxOnloadCount = 3;
 163                                 } else
 164                                 if( X_UA[ 'IE' ] < 8 ){ // ie5-7
 165                                         html = [
 166                                                 '<script id="jn"></script>',
 167                                                 '<script', charset, ' id="jp"></script>',
 168                                                 '<script>',
 169                                                         'onunload=function(){clearTimeout(id)};',
 170                                                         'function ', callback, '(o){nw-=new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw-16,', json2FileSize, ')}',
 171                                                         'function t1(){jn.src="', json2Path ,'";id=setTimeout(t2,16);nw=+new Date}',
 172                                                         'id=setTimeout(t1,16);',
 173                                                         'function t2(){if(window.JSON){jp.src="', url ,'"}else{id=setTimeout(t2,16)}}',
 174                                                 '</script>'
 175                                         ];
 176                                         X_JSONP_maxOnloadCount = 3;
 177                                 } else {
 178                                         html = [
 179                                                 '<script>',
 180                                                         'function ', callback, '(o){if(nw){nw-=new Date;parent.X.Net.__json_cb__(' + X_JSONP_ACCESS_KEY + ',JSON.stringify(o),-nw,', json2FileSize, ');nw=0}}',
 181                                                         'nw=+new Date;',
 182                                                 '</script>',
 183                                                 '<script src="', json2Path, '"></script>',
 184                                                 '<script', charset, ' src="', url, '"></script>'
 185                                         ];
 186                                         X_JSONP_maxOnloadCount = 2;
 187                                 };
 188
 189                                 X_JSONP
 190                                         [ 'refresh' ]( html.join( '' ) )
 191                                         [ 'listen' ]( [ 'ninjaload', 'ninjaerror' ], X_JSONP_iframeListener );
 192
 193                                 X_JSONP._busy = true;
 194                         },
 195
 196                         cancel : function(){
 197                                 X_JSONP.reset();
 198                                 X_JSONP._canceled = true;
 199                         },
 200
 201                         reset : function(){
 202                                 X_JSONP._busy = X_JSONP._canceled = false;
 203                                 X_JSONP[ 'unlisten' ]( [ 'ninjaload', 'ninjaerror' ], X_JSONP_iframeListener );
 204                                 X_JSONP[ 'refresh' ]( '' );
 205                                 X_JSONP_errorTimerID && X_Timer_remove( X_JSONP_errorTimerID );
 206                                 X_JSONP_errorTimerID = X_JSONP_onloadCount = 0;
 207                         }
 208                 };
 209
 210 function X_JSONP_iframeListener( e ){
 211         switch( e.type ){
 212                 case 'ninjaload' :
 213                         console.log( 'iframe onload, but ' + X_JSONP_onloadCount + ' < ' + X_JSONP_maxOnloadCount );
 214                         if( ++X_JSONP_onloadCount < X_JSONP_maxOnloadCount ) return;
 215
 216                         // TODO callback が無ければ error -> timeout を観る?
 217                         X_JSONP_errorTimerID = X_JSONP[ 'asyncDispatch' ]( 1000, X_EVENT_ERROR );
 218                         break;
 219                 case 'ninjaerror' :
 220                         console.log( 'iframe onerror' );
 221                         X_JSONP[ 'asyncDispatch' ]( X_EVENT_ERROR );
 222                         break;
 223         };
 224         return X_CALLBACK_UN_LISTEN;
 225 };