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_GadgetXHR_canUse         = 5.5 <= X_UA[ 'IE' ] || !X_UA[ 'IE' ],\r
  21         \r
  22         X_GadgetXHR_iframeName     = 'gadgetProxy_' + ( Math.random() * 100000 | 0 ),\r
  23         \r
  24         X_GadgetXHR_GADGET_XML_URL = 'http://googledrive.com/host/0B4Y86MXyTfuoVUkwTE54T3V1V1U',\r
  25         \r
  26         // https://kldleov8fp2dl82hphfmor8riij82tof-a-sites-opensocial.googleusercontent.com/gadgets/ifr\r
  27         X_GadgetXHR_GADGET_URL     = 'http://www.ig.gmodules.com/gadgets/ifr?url=' + encodeURIComponent( X_GadgetXHR_GADGET_XML_URL ) + '&nocache=1',\r
  28         \r
  29         X_GadgetXHR_IMAGE_URL      = 'img/opacity0.gif',\r
  30         \r
  31         // https://code.google.com/p/xssinterface/source/browse/trunk/js/xssinterface.js\r
  32         X_GadgetXHR_maxQueryLength = X_UA[ 'IE' ] ? 2000 : 6000,\r
  33         \r
  34         X_GadgetXHR_requestBatches,\r
  35         \r
  36         X_GadgetXHR_requestOriginal,\r
  37         \r
  38         X_GadgetXHR_timerID,\r
  39         \r
  40         X_GadgetXHR_phase = 0,\r
  41         \r
  42         X_GadgetXHR_lastHashString,\r
  43         \r
  44         X_GadgetXHR_isReceiveBatches, X_GadgetXHR_receivedString = '';\r
  45 \r
  46 \r
  47 function X_GadgetXHR_detectImageOverIframe(){\r
  48         var raw = X_GadgetXHR[ '_rawObject' ],\r
  49                 iwin, frames, i, ret, n;\r
  50         \r
  51         if( raw ){\r
  52                 iwin = raw.contentWindow || ( raw.contentDocument && raw.contentDocument.parentWindow ) || window.frames[ X_GadgetXHR_iframeName ];\r
  53                 \r
  54                 if( iwin && ( frames = iwin.frames ) && ( i = frames.length ) ){\r
  55                         for( ; i; ){\r
  56                                 if( ret = X_Script_try( X_Object_find, [ frames[ --i ], 'location>hash' ] ) ) break;\r
  57                         };\r
  58                         if( ret && ret !== X_GadgetXHR_lastHashString ){\r
  59                                 X_GadgetXHR_lastHashString = ret;\r
  60                                 //console.log( ret.length );\r
  61                                 //console.log( '' + ret );\r
  62                                 \r
  63                                 switch( X_GadgetXHR_phase ){\r
  64                                         case 0 : // makeRequest\r
  65                                                 iwin.location.href = X_GadgetXHR_GADGET_URL + '#' + X_GadgetXHR_requestBatches.shift();\r
  66                                                 if( X_GadgetXHR_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_GadgetXHR_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_GadgetXHR_isReceiveBatches ){\r
  79                                                         X_GadgetXHR_receivedString += X_GadgetXHR_decodeLocationHash( ret );                                            \r
  80                                                         if( --X_GadgetXHR_isReceiveBatches ){\r
  81                                                                 iwin.location.href = X_GadgetXHR_GADGET_URL + '#_recived_' + X_GadgetXHR_isReceiveBatches;\r
  82                                                                 return;\r
  83                                                         };\r
  84                                                 } else\r
  85                                                 if( 1 < n ){\r
  86                                                         ret = ret.substr( ( n + ':' ).length );\r
  87                                                         X_GadgetXHR_receivedString   = X_GadgetXHR_decodeLocationHash( ret );\r
  88                                                         X_GadgetXHR_isReceiveBatches = --n;\r
  89                                                         iwin.location.href = X_GadgetXHR_GADGET_URL + '#_recived_' + X_GadgetXHR_isReceiveBatches;\r
  90                                                         // speedup\r
  91                                                         X_GadgetXHR_timerID = X_Timer_add( 16, 0, X_GadgetXHR_detectImageOverIframe );\r
  92                                                         return X_CALLBACK_UN_LISTEN;\r
  93                                                 } else {\r
  94                                                         X_GadgetXHR_receivedString = X_GadgetXHR_decodeLocationHash( ret );\r
  95                                                 };\r
  96 \r
  97                                                 X_GadgetXHR[ 'asyncDispatch' ]( X_JSON_parseTrustableString( X_GadgetXHR_receivedString ) );\r
  98                                                 X_GadgetXHR_receivedString = '';\r
  99                                                 //console.dir( e );\r
 100 \r
 101                                                 X_GadgetXHR._busy = false;\r
 102                                                 X_GadgetXHR_timerID = X_GadgetXHR_phase = 0;\r
 103 \r
 104                                                 X_GadgetXHR_lastHashString = '';\r
 105                                                 iwin.location.href = X_GadgetXHR_GADGET_URL + '#_recived_';\r
 106                                                 \r
 107                                                 return X_CALLBACK_UN_LISTEN;\r
 108                                 };\r
 109                                 ++X_GadgetXHR_phase;\r
 110                         };\r
 111                 };\r
 112         };\r
 113 };\r
 114 \r
 115 // http://outcloud.blogspot.jp/2015/06/gecko-location-hash.html\r
 116 function X_GadgetXHR_decodeLocationHash( str ){\r
 117         return X_UA[ 'Gecko' ] ? unescape( str ) : decodeURIComponent( str );\r
 118 };\r
 119 \r
 120 X_TEMP.X_GadgetXHR_init = function(){\r
 121         X_GadgetXHR = X_Class_override(\r
 122                         X_Node_systemNode\r
 123                                 .create( 'iframe', {\r
 124                                         className         : 'hidden-iframe',\r
 125                                         name              : X_GadgetXHR_iframeName,\r
 126                                         id                : X_GadgetXHR_iframeName,\r
 127                                         src               : X_GadgetXHR_GADGET_URL + '#' + encodeURIComponent(\r
 128                                                         X_JSON_stringify( {\r
 129                                                                 'img'  : X_URL_toAbsolutePath( X_GadgetXHR_IMAGE_URL ),\r
 130                                                                 'len'  : X_GadgetXHR_maxQueryLength,\r
 131                                                                 'itv'  : 333,\r
 132                                                                 'gck'  : X_UA[ 'Gecko' ] ? 1 : 0,\r
 133                                                                 'err'  : X_EVENT_ERROR,\r
 134                                                                 'suc'  : X_EVENT_SUCCESS\r
 135                                                         } )\r
 136                                                 ),\r
 137                                         scrolling         : 'no',\r
 138                                         allowtransparency : 'no',                                       \r
 139                                         frameborder       : 0,\r
 140                                         tabindex          : -1\r
 141                                         } ),\r
 142                         X_TEMP.X_GadgetXHR_props );\r
 143         \r
 144         delete X_TEMP.X_GadgetXHR_init;\r
 145         delete X_TEMP.X_GadgetXHR_props;        \r
 146         \r
 147         X_GadgetXHR_requestBatches = [];\r
 148         \r
 149         return X_GadgetXHR;\r
 150 };\r
 151 \r
 152 X_TEMP.X_GadgetXHR_props = {\r
 153 \r
 154                 _busy         : false,\r
 155                 _canceled     : false,\r
 156                 _onloadCount  : 0,\r
 157                 \r
 158                 load : function( obj ){\r
 159                         var req = {},\r
 160                                 k, max, sendStr, l, str;\r
 161                         //createURL\r
 162 \r
 163                         X_GadgetXHR_requestOriginal = obj;\r
 164                         \r
 165                         for( k in obj ){\r
 166                                 switch( k ){\r
 167                                         case 'url' :\r
 168                                         case 'postdata' :\r
 169                                         case 'method' :\r
 170                                         case 'dataType' :\r
 171                                         case 'headers' :\r
 172                                         case 'cashe' :\r
 173                                                 req[ k ] = obj[ k ];\r
 174                                                 break;\r
 175                                 };\r
 176                         };\r
 177                         \r
 178                         max = X_GadgetXHR_maxQueryLength - X_GadgetXHR_GADGET_URL.length - 5;\r
 179                         \r
 180                         sendStr = X_JSON_stringify( req );\r
 181                         \r
 182                         while( sendStr.length ){\r
 183                                 l   = max;\r
 184                                 str = encodeURIComponent( sendStr.substr( 0, l ) );\r
 185                                 while( max < str.length ){\r
 186                                         l   = l * ( 2 + l / str.length ) / 3 | 0;\r
 187                                         str = encodeURIComponent( sendStr.substr( 0, l ) );\r
 188                                         //console.log( l );\r
 189                                 };\r
 190                                 X_GadgetXHR_requestBatches.push( str );\r
 191                                 sendStr = sendStr.substr( l );\r
 192                                 str = '';\r
 193                         };\r
 194                         \r
 195                         sendStr = '';\r
 196                         \r
 197                         if( 1 < X_GadgetXHR_requestBatches.length ){\r
 198                                 X_GadgetXHR_requestBatches[ 0 ] = X_GadgetXHR_requestBatches.length + ':' + X_GadgetXHR_requestBatches[ 0 ];    \r
 199                         };\r
 200                         \r
 201                         X_GadgetXHR_timerID = X_Timer_add( 333, 0, X_GadgetXHR_detectImageOverIframe );\r
 202                         \r
 203                         X_GadgetXHR._busy = true;\r
 204                 },\r
 205                 \r
 206                 cancel : function(){\r
 207                         X_GadgetXHR._canceled = true;\r
 208                 },\r
 209                 \r
 210                 reset : function(){\r
 211                         X_GadgetXHR._busy = X_GadgetXHR._canceled = false;\r
 212                         X_GadgetXHR._onloadCount = 0;\r
 213                 }\r
 214         };\r
 215 \r
 216 //}+xhrgadget