| 1 | (function() |
|---|
| 2 | { |
|---|
| 3 | var _THREADS = []; |
|---|
| 4 | var _ie; |
|---|
| 5 | |
|---|
| 6 | function _config(pObj, pEvent, pHandler) |
|---|
| 7 | { |
|---|
| 8 | if ( typeof pObj == 'object' ) |
|---|
| 9 | { |
|---|
| 10 | if ( pEvent.substring(0, 2) == 'on' ) |
|---|
| 11 | pEvent = pEvent.substring(2, pEvent.length); |
|---|
| 12 | |
|---|
| 13 | if ( pObj.addEventListener ) |
|---|
| 14 | pObj.addEventListener(pEvent, pHandler, false); |
|---|
| 15 | else if ( pObj.attachEvent ) |
|---|
| 16 | pObj.attachEvent('on' + pEvent, pHandler); |
|---|
| 17 | } |
|---|
| 18 | } |
|---|
| 19 | |
|---|
| 20 | // xhr = XMLHttpRequest |
|---|
| 21 | function _xhr() |
|---|
| 22 | { |
|---|
| 23 | try |
|---|
| 24 | { |
|---|
| 25 | return new XMLHttpRequest(); |
|---|
| 26 | } |
|---|
| 27 | catch ( _e ) |
|---|
| 28 | { |
|---|
| 29 | _ie = true; |
|---|
| 30 | try |
|---|
| 31 | { |
|---|
| 32 | return new ActiveXObject('Msxml2.XMLHTTP'); |
|---|
| 33 | } |
|---|
| 34 | catch ( _e1 ) |
|---|
| 35 | { |
|---|
| 36 | try |
|---|
| 37 | { |
|---|
| 38 | return new ActiveXObject('Microsoft.XMLHTTP'); |
|---|
| 39 | } |
|---|
| 40 | catch ( _e2 ) |
|---|
| 41 | { |
|---|
| 42 | return false; |
|---|
| 43 | } |
|---|
| 44 | } |
|---|
| 45 | } |
|---|
| 46 | } |
|---|
| 47 | |
|---|
| 48 | function _HANDLER() |
|---|
| 49 | { |
|---|
| 50 | var _ID = arguments[0]; |
|---|
| 51 | |
|---|
| 52 | if ( _THREADS[_ID] ) |
|---|
| 53 | { |
|---|
| 54 | if ( _ie && _THREADS[_ID]._XHR.readyState != 4 ) |
|---|
| 55 | return false; |
|---|
| 56 | |
|---|
| 57 | switch ( _THREADS[_ID]._XHR.readyState ) |
|---|
| 58 | { |
|---|
| 59 | case 3 : |
|---|
| 60 | if ( _THREADS[_ID]._HANDLER.stream ) |
|---|
| 61 | { |
|---|
| 62 | var _data = _THREADS[_ID]._XHR.responseText.substr(_THREADS[_ID]._index).replace(/^ +| +$/g, ''); |
|---|
| 63 | //alert(_data); |
|---|
| 64 | _THREADS[_ID]._rtlen = _THREADS[_ID]._XHR.responseText.length; |
|---|
| 65 | |
|---|
| 66 | if ( _THREADS[_ID]._index < _THREADS[_ID]._rtlen && _data.length ) |
|---|
| 67 | try |
|---|
| 68 | { |
|---|
| 69 | _THREADS[_ID]._HANDLER.stream(_data); |
|---|
| 70 | } |
|---|
| 71 | catch(_e) |
|---|
| 72 | { |
|---|
| 73 | //alert("#stream\n\n" + _e + "\n\n" + _e.description); |
|---|
| 74 | } |
|---|
| 75 | |
|---|
| 76 | if ( _THREADS[ _ID ] ) |
|---|
| 77 | _THREADS[ _ID ]._index = _THREADS[ _ID ]._rtlen; |
|---|
| 78 | } |
|---|
| 79 | break; |
|---|
| 80 | case 4 : |
|---|
| 81 | try |
|---|
| 82 | { |
|---|
| 83 | switch ( _THREADS[ _ID ]._XHR.status ) |
|---|
| 84 | { |
|---|
| 85 | case 200: |
|---|
| 86 | var _data = ( _THREADS[ _ID ]._MODE == 'XML' ) ? |
|---|
| 87 | _THREADS[ _ID ]._XHR.responseXML : |
|---|
| 88 | _THREADS[ _ID ]._XHR.responseText; |
|---|
| 89 | |
|---|
| 90 | if ( _ie && _THREADS[ _ID ]._HANDLER.stream ) |
|---|
| 91 | _THREADS[ _ID ]._HANDLER.stream(_data); |
|---|
| 92 | |
|---|
| 93 | var _request = ( _THREADS[ _ID ]._HANDLER.request ) ? |
|---|
| 94 | _THREADS[ _ID ]._HANDLER.request : false; |
|---|
| 95 | |
|---|
| 96 | if ( _THREADS[ _ID ]._MODE == 'XML' && _data.documentElement && _data.documentElement.hasAttribute( 'ControllerKey' ) ) |
|---|
| 97 | { |
|---|
| 98 | this._CONTROLLER_KEY = _data.documentElement.getAttribute( 'ControllerKey' ); |
|---|
| 99 | _data.documentElement.removeAttribute( 'ControllerKey' ); |
|---|
| 100 | } |
|---|
| 101 | |
|---|
| 102 | delete _THREADS[ _ID ]; |
|---|
| 103 | |
|---|
| 104 | if ( _request ) |
|---|
| 105 | try |
|---|
| 106 | { |
|---|
| 107 | if ( this._cache ) |
|---|
| 108 | { |
|---|
| 109 | this._CACHED[ _ID ] = _data; |
|---|
| 110 | this._cache = false; |
|---|
| 111 | } |
|---|
| 112 | |
|---|
| 113 | _request( _data ); |
|---|
| 114 | } |
|---|
| 115 | catch( e ) |
|---|
| 116 | { |
|---|
| 117 | //alert("#request\n\n" + _ID + "\n\n" + _e + "\n\n" + _e.description); |
|---|
| 118 | } |
|---|
| 119 | |
|---|
| 120 | break; // [case : status 200] |
|---|
| 121 | case 404: |
|---|
| 122 | delete _THREADS[ _ID ]; |
|---|
| 123 | alert( 'Page Not Found!' ); |
|---|
| 124 | break; // [case : status 404] |
|---|
| 125 | default: |
|---|
| 126 | delete _THREADS[ _ID ]; |
|---|
| 127 | } |
|---|
| 128 | } |
|---|
| 129 | catch( e ) |
|---|
| 130 | { |
|---|
| 131 | } |
|---|
| 132 | break; |
|---|
| 133 | default : |
|---|
| 134 | } |
|---|
| 135 | } |
|---|
| 136 | } |
|---|
| 137 | |
|---|
| 138 | function _execute( ) |
|---|
| 139 | { |
|---|
| 140 | var _ID = arguments[0]; |
|---|
| 141 | |
|---|
| 142 | var _ACTION = 'act=' + _ID; |
|---|
| 143 | var _TARGET = this._PATH + this._CONTROLLER + _THREADS[ _ID ]._ACCESS; |
|---|
| 144 | |
|---|
| 145 | var _SEND = null; |
|---|
| 146 | |
|---|
| 147 | //if ( _THREADS[_ID]._METHOD == 'GET' ) |
|---|
| 148 | // _TARGET += '?' + _ACTION; |
|---|
| 149 | |
|---|
| 150 | //_TARGET += _ID; |
|---|
| 151 | |
|---|
| 152 | _THREADS[ _ID ]._XHR.open( ( ( _THREADS[ _ID ]._POST ) ? 'POST' : 'GET' ), _TARGET, true); |
|---|
| 153 | |
|---|
| 154 | if ( _THREADS[ _ID ]._POST ) |
|---|
| 155 | { |
|---|
| 156 | _THREADS[ _ID ]._XHR.setRequestHeader( 'Content-Type','application/x-www-form-urlencoded' ); |
|---|
| 157 | _THREADS[ _ID ]._XHR.setRequestHeader( 'Cache-Control', 'no-store, no-cache, must-revalidate' ); |
|---|
| 158 | _THREADS[ _ID ]._XHR.setRequestHeader( 'Cache-Control', 'post-check=0, pre-check=0' ); |
|---|
| 159 | _THREADS[ _ID ]._XHR.setRequestHeader( 'Pragma', 'no-cache' ); |
|---|
| 160 | |
|---|
| 161 | _SEND = _THREADS[ _ID ]._POST; |
|---|
| 162 | |
|---|
| 163 | if ( this._CONTROLLER_KEY && typeof _SEND.documentElement == 'object' ) |
|---|
| 164 | _SEND.documentElement.setAttribute( 'ControllerKey', this._CONTROLLER_KEY ); |
|---|
| 165 | } |
|---|
| 166 | |
|---|
| 167 | _THREADS[ _ID ]._XHR.setRequestHeader( 'BackgroundRequest', Date.parse( new Date ) ); |
|---|
| 168 | |
|---|
| 169 | var _this = this; |
|---|
| 170 | _THREADS[ _ID ]._XHR.onreadystatechange = function( ){ _HANDLER.call( _this, _ID ); }; |
|---|
| 171 | _THREADS[ _ID ]._XHR.send( _SEND ); |
|---|
| 172 | } |
|---|
| 173 | |
|---|
| 174 | function usage( ) |
|---|
| 175 | { |
|---|
| 176 | return ""+ |
|---|
| 177 | "Description:\n"+ |
|---|
| 178 | "\t<obj>.go({string access, [mixed handler[, XMLObject post]]})\n\n"+ |
|---|
| 179 | "Parameters:\n"+ |
|---|
| 180 | "\taccess : assinatura de acesso à camada de controle.\n"+ |
|---|
| 181 | "\thandler : uma função a ser executada no fim da requisição\n"+ |
|---|
| 182 | "\t\tou um objeto que poderá conter dois Ãndices sendo\n"+ |
|---|
| 183 | "\t\tque ambos deverão ser uma função que será executada\n"+ |
|---|
| 184 | "\t\tconforme o status do objeto xhr, sendo que na posição\n"+ |
|---|
| 185 | "\t\t'stream' será a função a ser executada a cada iteração\n"+ |
|---|
| 186 | "\t\tdo objeto xhr e na posição 'request' será a função\n"+ |
|---|
| 187 | "\t\ta ser executada no fim da requisição.\n"+ |
|---|
| 188 | "\tpost : se especificado deverá ser uma query string ou um\n"+ |
|---|
| 189 | "\tXML bem formatado.\n\n"; |
|---|
| 190 | } |
|---|
| 191 | |
|---|
| 192 | // @PARAM <string> access : |
|---|
| 193 | // assinatura de acesso à camada de controle |
|---|
| 194 | // |
|---|
| 195 | // @PARAM <object> handler : |
|---|
| 196 | // OBS : neste caso a conexão assumirá que se trata de uma stream |
|---|
| 197 | // objeto contendo dois duas funções, sendo, |
|---|
| 198 | // no Ãndice stream deverá conter uma função que será execultada |
|---|
| 199 | // a cada mudança de status do objeto xhr |
|---|
| 200 | // |
|---|
| 201 | // @PARAM <function> handler : |
|---|
| 202 | // funcão a ser executada no retorno da requisição |
|---|
| 203 | // OBS : neste caso a conexão assumirá que se trata de uma |
|---|
| 204 | // requisição função que será execultada no final da requisição |
|---|
| 205 | // |
|---|
| 206 | // @PARAM <XMLObject> post: |
|---|
| 207 | // este parâmetro define se a conexão é via GET ou POST |
|---|
| 208 | // caso o parâmetro não esteja presente a conexão será execultada |
|---|
| 209 | // via GET, por outro lado, caso ele exista deverá ser uma query |
|---|
| 210 | // string válida ou um xml bem formatado |
|---|
| 211 | // |
|---|
| 212 | function go( ) |
|---|
| 213 | { |
|---|
| 214 | if ( arguments.length != 1 ) |
|---|
| 215 | return { 'error' : "#0\n\n" + usage( ) }; |
|---|
| 216 | |
|---|
| 217 | var _argv = arguments[ 0 ]; |
|---|
| 218 | |
|---|
| 219 | if ( ( ! _argv.access ) || ( typeof _argv.access != 'string' ) || ( ! _argv.access.length ) ) |
|---|
| 220 | return { 'error' : "#1\n\n" + usage( ) }; |
|---|
| 221 | |
|---|
| 222 | var _ID = _argv.access; |
|---|
| 223 | |
|---|
| 224 | _THREADS[ _ID ] = { |
|---|
| 225 | '_ACCESS' : _argv.access, |
|---|
| 226 | '_HANDLER' : { }, |
|---|
| 227 | '_POST' : ( ( _argv.post ) ? _argv.post : false ), // [GET | POST] |
|---|
| 228 | '_MODE' : 'TEXT', // [XML | TEXT] |
|---|
| 229 | '_TYPE' : null, // [4 for request | 3 for stream] |
|---|
| 230 | '_XHR' : null // [4 for request | 3 for stream] |
|---|
| 231 | }; |
|---|
| 232 | |
|---|
| 233 | if ( _argv.mode && ( _argv.mode == 'XML' || _argv.mode == 'TEXT' ) ) |
|---|
| 234 | _THREADS[ _ID ] = _argv.mode; |
|---|
| 235 | |
|---|
| 236 | if ( _argv.handler ) |
|---|
| 237 | switch ( typeof _argv.handler ) |
|---|
| 238 | { |
|---|
| 239 | case 'function' : |
|---|
| 240 | _THREADS[ _ID ]._HANDLER = { 'request' : _argv.handler }; |
|---|
| 241 | break; |
|---|
| 242 | case 'object' : |
|---|
| 243 | for ( var i in _argv.handler ) |
|---|
| 244 | if ( i != 'stream' && i != 'request' ) |
|---|
| 245 | { |
|---|
| 246 | delete _THREADS[ _ID ]; |
|---|
| 247 | return { 'error' : "#2\n\n" + usage( ) }; |
|---|
| 248 | } |
|---|
| 249 | else if ( i == 'stream' ) |
|---|
| 250 | { |
|---|
| 251 | _THREADS[ _ID ]._index = 0; |
|---|
| 252 | _THREADS[ _ID ]._rtlen = 0; |
|---|
| 253 | } |
|---|
| 254 | _THREADS[ _ID ]._HANDLER = _argv.handler; |
|---|
| 255 | break; |
|---|
| 256 | } |
|---|
| 257 | |
|---|
| 258 | if ( this._cache && this._CACHED[ _ID ] ) |
|---|
| 259 | { |
|---|
| 260 | this._cache = false; |
|---|
| 261 | if ( _THREADS[ _ID ]._HANDLER.request ) |
|---|
| 262 | _THREADS[ _ID ]._HANDLER.request( this._CACHED[ _ID ] ); |
|---|
| 263 | } |
|---|
| 264 | else |
|---|
| 265 | { |
|---|
| 266 | if ( ! ( _THREADS[ _ID ]._XHR = _xhr( ) ) ) |
|---|
| 267 | { |
|---|
| 268 | delete _THREADS[_ID]; |
|---|
| 269 | return { 'error' : "#3 it cannot make a xhr object" }; |
|---|
| 270 | } |
|---|
| 271 | |
|---|
| 272 | _execute.call( this, _ID ); |
|---|
| 273 | } |
|---|
| 274 | |
|---|
| 275 | return { 'success' : "your thread is running and the response will be manipulated by the handler" }; |
|---|
| 276 | } |
|---|
| 277 | |
|---|
| 278 | function _abort() |
|---|
| 279 | { |
|---|
| 280 | for ( var _ID in _THREADS ) |
|---|
| 281 | { |
|---|
| 282 | // @TODO |
|---|
| 283 | // try/catch for unknown error of IE. |
|---|
| 284 | // Check, store and retrieve the try/catch. |
|---|
| 285 | try |
|---|
| 286 | { |
|---|
| 287 | if ( _THREADS[_ID] && _THREADS[_ID]._XHR && _THREADS[_ID]._XHR.abort ) |
|---|
| 288 | _THREADS[_ID]._XHR.abort(); |
|---|
| 289 | |
|---|
| 290 | delete _THREADS[_ID]; |
|---|
| 291 | } |
|---|
| 292 | catch(e){} |
|---|
| 293 | } |
|---|
| 294 | } |
|---|
| 295 | |
|---|
| 296 | function Connector( ) |
|---|
| 297 | { |
|---|
| 298 | var _argv = arguments; |
|---|
| 299 | |
|---|
| 300 | this._PATH = ''; |
|---|
| 301 | |
|---|
| 302 | this._CONTROLLER = ''; |
|---|
| 303 | |
|---|
| 304 | this._cache = false; |
|---|
| 305 | |
|---|
| 306 | this._CACHED = [ ]; |
|---|
| 307 | |
|---|
| 308 | if ( ( _argv.length == 1 ) && ( typeof _argv[0] == 'object' ) ) |
|---|
| 309 | { |
|---|
| 310 | _argv = _argv[ 0 ]; |
|---|
| 311 | |
|---|
| 312 | if ( _argv.path && ( typeof _argv.path == 'string' ) ) |
|---|
| 313 | { |
|---|
| 314 | if ( _argv.path.indexOf('/') != 0 ) |
|---|
| 315 | _argv.path = '/' + _argv.path; |
|---|
| 316 | |
|---|
| 317 | if ( _argv.path.lastIndexOf('/') != ( _argv.path.length - 1) ) |
|---|
| 318 | _argv.path += '/'; |
|---|
| 319 | |
|---|
| 320 | this._PATH = _argv.path; |
|---|
| 321 | } |
|---|
| 322 | |
|---|
| 323 | if ( _argv.controller ) |
|---|
| 324 | this._CONTROLLER = _argv.controller; |
|---|
| 325 | |
|---|
| 326 | this._CONTROLLER_KEY = ( _argv.key ) ? |
|---|
| 327 | _argv.key : false; |
|---|
| 328 | } |
|---|
| 329 | } |
|---|
| 330 | |
|---|
| 331 | Connector.prototype.go = go; |
|---|
| 332 | Connector.prototype.abort = _abort; |
|---|
| 333 | Connector.prototype.cache = function( ) |
|---|
| 334 | { |
|---|
| 335 | _cache = true; |
|---|
| 336 | |
|---|
| 337 | if ( arguments.length == 1 && arguments[ 0 ].constructor == Boolean ) |
|---|
| 338 | _cache = arguments[ 0 ]; |
|---|
| 339 | |
|---|
| 340 | this._cache = _cache; |
|---|
| 341 | |
|---|
| 342 | return this; |
|---|
| 343 | }; |
|---|
| 344 | window.XConnector = Connector; |
|---|
| 345 | |
|---|
| 346 | _config( window, 'onbeforeunload', _abort ); |
|---|
| 347 | } |
|---|
| 348 | )(); |
|---|
