0.6.x/js/06_net/05_XXHRGadget.js

   1 //{+xhrgadget"OpenSocialガジェット通信プロキシ"(Xドメインは元よりXプロトコルな擬似xhr通信を可能にする)[+xhr]\r
   2 \r
   3 /*\r
   4  * gadgets.io.makeRequest\r
   5  * \r
   6  * 1. gadget-iframe を作る。指示を # で渡す。 元文書は frame 内の images の監視を開始する。\r
   7  *  1. 通信用 img の src\r
   8  *\r
   9  * 2. gadget-iframe が 通信用 img を作る。#ready\r
  10  * \r
  11  * 3. 元文書が #ready を受け取ったら、iframe の # を書き換えて指示を送る。指示が長い場合、分割して送る。\r
  12  * \r
  13  * 4. gadget-iframe は 通信用 img の # に結果を書く。コンテンツが長い場合、分割する。\r
  14  * \r
  15  * 5. 元文書は結果を受け取ったことを gadget-iframe の # に書いて伝える。\r
  16  * \r
  17  * \r
  18  */\r
  19 \r
  20 var X_NET_GIMR_canUse         = 5.5 <= X_UA[ 'IE' ] || !X_UA[ 'IE' ],\r
  21         \r
  22         X_NET_GIMR_iframeName     = 'gadgetProxy_' + ( Math.random() * 100000 | 0 ),\r
  23         \r
  24         X_NET_GIMR_GADGET_XML_URL = 'http://googledrive.com/host/0B4Y86MXyTfuoVUkwTE54T3V1V1U',\r
  25         \r
  26         // https://kldleov8fp2dl82hphfmor8riij82tof-a-sites-opensocial.googleusercontent.com/gadgets/ifr\r
  27         X_NET_GIMR_GADGET_URL     = 'http://www.ig.gmodules.com/gadgets/ifr?url=' + encodeURIComponent( X_NET_GIMR_GADGET_XML_URL ) + '&nocache=1',\r
  28         \r
  29         X_NET_GIMR_IMAGE_URL      = 'img/opacity0.gif',\r
  30         \r
  31         // https://code.google.com/p/xssinterface/source/browse/trunk/js/xssinterface.js\r
  32         X_NET_GIMR_maxQueryLength = X_UA[ 'IE' ] ? 2000 : 6000,\r
  33         \r
  34         X_NET_GIMR_detection      = new Function( 'f,j,i', 'for(j=f.length;j;)try{i=f[--j];return i.location.hash}catch(e){}' ),\r
  35         \r
  36         X_NET_GIMR_requestBatches,\r
  37         \r
  38         X_NET_GIMR_requestOriginal,\r
  39         \r
  40         X_NET_GIMR_timerID,\r
  41         \r
  42         X_NET_GIMR_phase = 0,\r
  43         \r
  44         X_NET_GIMR_lastHashString,\r
  45         \r
  46         X_NET_GIMR_isReceiveBatches, X_NET_GIMR_receivedString = '';\r
  47 \r
  48 \r
  49 function X_NET_GIMR_detectImageOverIframe(){\r
  50         var raw = this[ '_rawObject' ],\r
  51                 iwin, ret, n, error, data = null, zero, e;\r
  52         \r
  53         if( raw ){\r
  54                 iwin = raw.contentWindow || ( raw.contentDocument && raw.contentDocument.parentWindow ) || window.frames[ X_NET_GIMR_iframeName ];\r
  55                 \r
  56                 if( iwin && iwin.frames && iwin.frames.length ){\r
  57                         ret = X_NET_GIMR_detection( iwin.frames );\r
  58                         if( ret && ret !== X_NET_GIMR_lastHashString ){\r
  59                                 X_NET_GIMR_lastHashString = ret;\r
  60                                 //console.log( ret.length );\r
  61                                 //console.log( '' + ret );\r
  62                                 \r
  63                                 switch( X_NET_GIMR_phase ){\r
  64                                         case 0 : // makeRequest\r
  65                                                 iwin.location.href = X_NET_GIMR_GADGET_URL + '#' + X_NET_GIMR_requestBatches.shift();\r
  66                                                 if( X_NET_GIMR_requestBatches.length ) return; //TODO boost\r
  67                                                 break;\r
  68                                                 \r
  69                                         case 1 : // after makeRequest > :ok 待ち\r
  70                                                 iwin.location.href = X_NET_GIMR_GADGET_URL + '#_waiting_';\r
  71                                                 break;\r
  72 \r
  73                                         case 2 : // _waiting_ 通信結果待ち\r
  74                                                 // 分割受信モードか?\r
  75                                                 ret = ret.substr( 1 );\r
  76                                                 n   = parseInt( ret );\r
  77                                                 \r
  78                                                 if( X_NET_GIMR_isReceiveBatches ){\r
  79                                                         X_NET_GIMR_receivedString += X_Net_GIMR_decodeLocationHash( ret );                                              \r
  80                                                         if( --X_NET_GIMR_isReceiveBatches ){\r
  81                                                                 iwin.location.href = X_NET_GIMR_GADGET_URL + '#_recived_' + X_NET_GIMR_isReceiveBatches;\r
  82                                                                 return;\r
  83                                                         };\r
  84                                                 } else\r
  85                                                 if( 1 < n ){\r
  86                                                         ret = ret.substr( ( n + ':' ).length );\r
  87                                                         X_NET_GIMR_receivedString   = X_Net_GIMR_decodeLocationHash( ret );\r
  88                                                         X_NET_GIMR_isReceiveBatches = --n;\r
  89                                                         iwin.location.href = X_NET_GIMR_GADGET_URL + '#_recived_' + X_NET_GIMR_isReceiveBatches;\r
  90                                                         // speedup\r
  91                                                         X_NET_GIMR_timerID = X_Timer_add( 16, 0, this, X_NET_GIMR_detectImageOverIframe );\r
  92                                                         return X_Callback_UN_LISTEN;\r
  93                                                 } else {\r
  94                                                         X_NET_GIMR_receivedString = X_Net_GIMR_decodeLocationHash( ret );\r
  95                                                 };\r
  96 \r
  97                                                 ret = X_String_parseTrustedJsonString( X_NET_GIMR_receivedString );\r
  98                                                 \r
  99                                                 \r
 100                                                 X_NET_GIMR_receivedString = '';\r
 101                                                 \r
 102                                                 error = ret[ 'errors' ] && ret[ 'errors' ].length;\r
 103                                                 \r
 104                                                 switch( !error && X_NET_GIMR_requestOriginal[ 'dataType' ] ){\r
 105                                                         case 'json' :\r
 106                                                                 data = X_String_parseTrustedJsonString( ret[ 'json' ] || ret[ 'text' ] || '' );\r
 107                                                                 break;\r
 108                                                 };\r
 109                                                 \r
 110                                                 //console.dir( data || ret );\r
 111                                                 \r
 112                                                 X_NET_GIMRWrapper._busy = false;\r
 113                                                 \r
 114                                                 if( error || ret[ 'rc' ] < 200 || 400 < ret[ 'rc' ] ){\r
 115                                                         e = {\r
 116                                                                 type      : X_EVENT_ERROR,\r
 117                                                                 status    : ret[ 'rc' ] || ret[ 'code' ] || 400,\r
 118                                                                 'message' : error && ret[ 'errors' ].join( '\n' )\r
 119                                                         };\r
 120                                                 } else {\r
 121                                                         e = {\r
 122                                                                 type      : X_EVENT_SUCCESS,\r
 123                                                                 status    : ret[ 'rc' ] || 200,\r
 124                                                                 response  : data\r
 125                                                         };\r
 126                                                 };\r
 127                                                 \r
 128                                                 e[ 'headers' ] = ret[ 'headers' ];\r
 129                                                 \r
 130                                                 X_NET_GIMRWrapper[ 'asyncDispatch' ]( e );\r
 131                                                 \r
 132                                                 //console.dir( e );\r
 133 \r
 134                                                 X_NET_GIMR_timerID = X_NET_GIMR_phase = 0;\r
 135                                                 X_NET_GIMR_lastHashString = '';                                                 \r
 136                                                 iwin.location.href = X_NET_GIMR_GADGET_URL + '#_recived_';\r
 137                                                 \r
 138                                                 return X_Callback_UN_LISTEN;\r
 139                                 };\r
 140                                 ++X_NET_GIMR_phase;\r
 141                         };\r
 142                 };\r
 143         };\r
 144 };\r
 145 \r
 146 // http://outcloud.blogspot.jp/2015/06/gecko-location-hash.html\r
 147 function X_Net_GIMR_decodeLocationHash( str ){\r
 148         return X_UA[ 'Gecko' ] ? unescape( str ) : decodeURIComponent( str );\r
 149 };\r
 150 \r
 151 X_TEMP.X_Net_GIMR_init = function(){\r
 152         X_NET_GIMRWrapper = X_Class_override(\r
 153                         X_Node_systemNode\r
 154                                 .create( 'iframe', {\r
 155                                         className         : 'hidden-iframe',\r
 156                                         name              : X_NET_GIMR_iframeName,\r
 157                                         id                : X_NET_GIMR_iframeName,\r
 158                                         src               : X_NET_GIMR_GADGET_URL + '#' + encodeURIComponent(\r
 159                                                         X_JSON_stringify( {\r
 160                                                                 'img'  : X_URL_toAbsolutePath( X_NET_GIMR_IMAGE_URL ),\r
 161                                                                 'len'  : X_NET_GIMR_maxQueryLength,\r
 162                                                                 'itvl' : 333,\r
 163                                                                 'gck'  : X_UA[ 'Gecko' ] ? 1 : 0\r
 164                                                         } )\r
 165                                                 ),\r
 166                                         scrolling         : 'no',\r
 167                                         allowtransparency : 'no',                                       \r
 168                                         frameborder       : 0,\r
 169                                         tabindex          : -1\r
 170                                         }),\r
 171                         X_TEMP.X_Net_GIMR_props );\r
 172         \r
 173         delete X_TEMP.X_Net_GIMR_init;\r
 174         delete X_TEMP.X_Net_GIMR_props; \r
 175         \r
 176         X_NET_GIMR_requestBatches = [];\r
 177         \r
 178         return X_NET_GIMRWrapper;\r
 179 };\r
 180 \r
 181 X_TEMP.X_Net_GIMR_props = {\r
 182 \r
 183                 _busy         : false,\r
 184                 _canceled     : false,\r
 185                 _onloadCount  : 0,\r
 186                 \r
 187                 load : function( obj ){\r
 188                         var req = {},\r
 189                                 k, max, sendStr, l, str;\r
 190                         //createURL\r
 191 \r
 192                         X_NET_GIMR_requestOriginal = obj;\r
 193                         \r
 194                         for( k in obj ){\r
 195                                 switch( k ){\r
 196                                         case 'url' :\r
 197                                         case 'postdata' :\r
 198                                         case 'method' :\r
 199                                         case 'dataType' :\r
 200                                         case 'headers' :\r
 201                                         case 'cashe' :\r
 202                                                 req[ k ] = obj[ k ];\r
 203                                                 break;\r
 204                                 };\r
 205                         };\r
 206                         \r
 207                         max = X_NET_GIMR_maxQueryLength - X_NET_GIMR_GADGET_URL.length - 5;\r
 208                         \r
 209                         sendStr = X_JSON_stringify( req );\r
 210                         \r
 211                         while( sendStr.length ){\r
 212                                 l   = max;\r
 213                                 str = encodeURIComponent( sendStr.substr( 0, l ) );\r
 214                                 while( max < str.length ){\r
 215                                         l   = l * ( 2 + l / str.length ) / 3 | 0;\r
 216                                         str = encodeURIComponent( sendStr.substr( 0, l ) );\r
 217                                         //console.log( l );\r
 218                                 };\r
 219                                 X_NET_GIMR_requestBatches.push( str );\r
 220                                 sendStr = sendStr.substr( l );\r
 221                                 str = '';\r
 222                         };\r
 223                         \r
 224                         sendStr = '';\r
 225                         \r
 226                         if( 1 < X_NET_GIMR_requestBatches.length ){\r
 227                                 X_NET_GIMR_requestBatches[ 0 ] = X_NET_GIMR_requestBatches.length + ':' + X_NET_GIMR_requestBatches[ 0 ];       \r
 228                         };\r
 229                         \r
 230                         X_NET_GIMR_timerID = X_Timer_add( 333, 0, this, X_NET_GIMR_detectImageOverIframe );\r
 231                         \r
 232                         this._busy = true;\r
 233                 },\r
 234                 \r
 235                 cancel : function(){\r
 236                         this._canceled = true;\r
 237                 },\r
 238                 \r
 239                 reset : function(){\r
 240                         this._busy = this._canceled = false;\r
 241                         this._onloadCount = 0;\r
 242                 }\r
 243         };\r
 244 \r
 245 //}+xhrgadget