0.6.x/js/01_core/16_XViewPort.js

   1
   2 var X_ViewPort_readyState,
   3         X_ViewPort_active = !!window.parent || !!document.activeElement, // parent は frameに読み込まれた場合のieのerror回避
   4         X_ViewPort_rootElement,
   5         X_ViewPort_lock,
   6         X_ViewPort_width,
   7         X_ViewPort_height,
   8         X_ViewPort_scrollX = 0,
   9         X_ViewPort_scrollY = 0,
  10         X_ViewPort_baseFontSize,
  11         X_ViewPort_vScrollbarSize,
  12         X_ViewPort_hScrollbarSize,
  13
  14         X_ViewPort_useDetectionLoop = X_UA[ 'IE' ] < 9 || X_UA[ 'iOS' ],
  15         X_ViewPort_detectFontSize = !X_ViewPort_useDetectionLoop && function(){
  16                         var size = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
  17                         if( X_ViewPort_baseFontSize !== size ){
  18                                 X_ViewPort_baseFontSize = size;
  19                                 X_ViewPort_baseFontSize && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_BASE_FONT_RESIZED );
  20                         };
  21         },
  22
  23         X_ViewPort_orientationFlag,
  24         X_ViewPort_orientationchange = window[ 'orientation' ] !== undefined && function( e ){
  25                 X_ViewPort_orientationFlag = true;
  26                 !X_UA[ 'Android' ] && X_ViewPort_resize();
  27                 //console.log( '-- orientationchange : ' + X[ 'ViewPort' ][ 'getSize' ][ 0 ] + ' ' + X[ 'ViewPort' ][ 'getSize' ][ 1 ] );
  28         },
  29
  30         X_ViewPort_document = X_EventDispatcher( document ),
  31
  32 X_ViewPort = X_Class_override(
  33         X_EventDispatcher( window ),
  34         {
  35
  36                 'handleEvent' : function( e ){
  37                         var href, i, name;
  38
  39                         switch( e.type ){
  40                                 case 'beforeunload' :
  41                                         // ie では　a href="javascript" な要素でも beforeunload が起こる
  42                                         href = e.target && e.target[ 'attr' ] && e.target[ 'attr' ]( 'href' );
  43                                         if( href && href.indexOf && href.indexOf( 'javascript:' ) === 0 ) return X_Callback_PREVENT_DEFAULT | X_Callback_STOP_PROPAGATION;
  44
  45                                         return X_ViewPort[ 'dispatch' ]( X_EVENT_BEFORE_UNLOAD );
  46
  47                                 case 'unload' :
  48                                         X_ViewPort[ 'dispatch' ]( X_EVENT_UNLOAD );
  49                                 //alert('unload');
  50                                         X_ViewPort_document[ 'kill' ]();
  51                                         this[ 'kill' ]();
  52
  53                                         //X_System[ 'dispatch' ]( X_EVENT_SHUT_DOWN );
  54                                         break;
  55
  56                                 case 'visibilitychange' :
  57                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = document[ 'hidden' ] ) ? X_EVENT_VIEW_DEACTIVATE : X_EVENT_VIEW_ACTIVATE );
  58                                         break;
  59                                 case 'mozvisibilitychange' :
  60                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = document[ 'mozHidden' ] ) ? X_EVENT_VIEW_DEACTIVATE : X_EVENT_VIEW_ACTIVATE );
  61                                         break;
  62                                 case 'webkitvisibilitychange' :
  63                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = document[ 'webkitHidden' ] ) ? X_EVENT_VIEW_DEACTIVATE : X_EVENT_VIEW_ACTIVATE );
  64                                         break;
  65
  66                                 case 'pageshow' :
  67                                 case 'focus' :
  68                                         if( !X_ViewPort_active ){
  69                                                 X_ViewPort_active = true;
  70                                                 X_ViewPort[ 'dispatch' ]( X_EVENT_VIEW_ACTIVATE );
  71                                         };
  72                                         break;
  73
  74                                 case 'pagehide' :
  75                                 case 'blur' :
  76                                         if( X_ViewPort_active ){
  77                                                 X_ViewPort_active = false;
  78                                                 X_ViewPort[ 'dispatch' ]( X_EVENT_VIEW_DEACTIVATE );
  79                                         };
  80                                         break;
  81                         };
  82                 }
  83
  84         }
  85 );
  86
  87
  88 /**
  89  * window に相当する ViewPort 情報を提供するオブジェクト。
  90  * @namespace X.ViewPort
  91  * @alias X.ViewPort
  92  */
  93 X[ 'ViewPort' ] = {
  94
  95         'listen' : function( type, arg1, arg2, arg3 ){
  96                 if( type <= X_ViewPort_readyState ){
  97                         /*
  98                          * X_EVENT_XDOM_READY 以後に listen した場合の対策
  99                          */
 100                         X_ViewPort[ 'asyncDispatch' ]( type );
 101                 };
 102                 // ie8-では keydown -> documentへ
 103                 type && arg1 && X_ViewPort[ 'listen' ]( type, arg1, arg2, arg3 );
 104                 return X[ 'ViewPort' ];
 105         },
 106
 107
 108         'listenOnce' : function( type, arg1, arg2, arg3 ){
 109                 if( type <= X_ViewPort_readyState ){
 110                         /*
 111                          * X.Event.XDOM_READY 以後に listen した場合の対策
 112                          */
 113                         X_ViewPort[ 'asyncDispatch' ]( type );
 114                 };
 115                 type && arg1 && X_ViewPort[ 'listenOnce' ]( type, arg1, arg2, arg3 );
 116                 return X[ 'ViewPort' ];
 117         },
 118
 119         'unlisten' : function( type, arg1, arg2, arg3 ){
 120                 type && arg1 && X_ViewPort[ 'unlisten' ]( type, arg1, arg2, arg3 );
 121                 return X[ 'ViewPort' ];
 122         },
 123
 124         'listening' : function( type, arg1, arg2, arg3 ){
 125                 return X_ViewPort[ 'listening' ]( type, arg1, arg2, arg3 );
 126         },
 127
 128         // hammer のテストファイルだけが使用
 129         'asyncDispatch' : function(){
 130                 return X_ViewPort[ 'asyncDispatch' ].apply( X_ViewPort, arguments );
 131         },
 132
 133         'getPointerPosition' : function(){
 134
 135         },
 136
 137         /* 要素が視界に入った  http://remysharp.com/2009/01/26/element-in-view-event-plugin/
 138          * TODO -> Node.call('inView')
 139          */
 140         'inView' : function( elm ){
 141
 142         },
 143
 144         'getSize' : function(){
 145                 return [ X_ViewPort_width, X_ViewPort_height ];
 146         },
 147 //https://developer.mozilla.org/en-US/docs/Web/API/Element.getBoundingClientRect
 148 //use window.pageXOffset and window.pageYOffset instead of window.scrollX and window.scrollY
 149 //(((t = document.documentElement) || (t = document.body.parentNode)) && typeof t.ScrollLeft == 'number' ? t : document.body).ScrollLeft;
 150 //(((t = document.documentElement) || (t = document.body.parentNode)) && typeof t.ScrollTop == 'number' ? t : document.body).ScrollTop
 151
 152         'getDocumentSize' : function(){
 153                 // Opera は互換モードでは document.body.scrollHeight、標準モードでは document.documentElement.scrollHeight でページの高さが取れる。と思ってたんだけど、例外があった。
 154                 // http://orera.g.hatena.ne.jp/edvakf/20100515/1273908051
 155         //http://onozaty.hatenablog.com/entry/20060803/p1
 156         // Safari2.0.4では標準・互換どちらも document.body
 157
 158                 X_Node_updateTimerID && X_Node_startUpdate();
 159                 /*X_UA[ 'Opera' ] ?
 160                         ( document.documentElement && document.documentElement.clientWidth ?
 161                                 new Function( 'return[document.documentElement.clientWidth,document.documentElement.clientHeight]' ) :
 162                                 new Function( 'return[document.body.clientWidth,document.body.clientHeight]' )
 163                         ) :*/
 164                 return [
 165                         X_ViewPort_rootElement.scrollWidth  || X_ViewPort_rootElement.offsetWidth,
 166                         X_ViewPort_rootElement.scrollHeight || X_ViewPort_rootElement.offsetHeight
 167                 ];
 168         },
 169
 170         'getScrollPosition' :
 171                 window.pageXOffset !== undefined ?
 172                         ( function(){
 173                                 X_Node_updateTimerID && X_Node_startUpdate();
 174                                 return[ X_ViewPort_scrollX = window.pageXOffset, X_ViewPort_scrollY = window.pageYOffset ];
 175                         } ) :
 176                 window.scrollLeft  !== undefined ?
 177                         ( function(){
 178                                 X_Node_updateTimerID && X_Node_startUpdate();
 179                                 return[ X_ViewPort_scrollX = window.scrollLeft, X_ViewPort_scrollY = window.scrollTop ];
 180                         } ) :
 181                         ( function(){
 182                                 X_Node_updateTimerID && X_Node_startUpdate();
 183                                 // body は Safari2-
 184                                 return[ X_ViewPort_scrollX = X_ViewPort_rootElement.scrollLeft || document.body.scrollLeft, X_ViewPort_scrollY = X_ViewPort_rootElement.scrollTop || document.body.scrollTop ];
 185                         } ),
 186
 187         'getScrollbarSize' : function(){
 188                 return [ X_ViewPort_vScrollbarSize, X_ViewPort_hScrollbarSize ];
 189         },
 190
 191         'getBaseFontSize' : function(){
 192                 if( X_Node_updateTimerID ){
 193                         X_Node_startUpdate();
 194                         return X_ViewPort_baseFontSize = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 195                 };
 196                 return X_ViewPort_baseFontSize;
 197         }
 198
 199 };
 200
 201
 202
 203 /* -----------------------------------------------
 204  * Resize
 205  *  original : uupaa.js
 206  *
 207  * TODO
 208  *  https://w3g.jp/blog/studies/ios7_1_minimal-ui_warning
 209  *  iOS7.0からあったiPad Safariの高さ100%コンテンツでlandscape（横向き）時に起きる不具合
 210  *
 211  * http://looxu.blogspot.jp/2013/11/ios7mobile-safariwindowinnerheight.html
 212  * iOS7にて、Mobile Safariのwindow.innerHeightを正しく取得する方法
 213  *
 214  *  http://tenderfeel.xsrv.jp/javascript/1182/
 215  *  アドレスバーの高さの算出
 216  *
 217  * http://sssslide.com/www.slideshare.net/hiroakiwakamatsu/javascript-14514208
 218  * 1. 傾き時の画面サイズ取得ー 対処方法の例
 219  * (1)ー? タイマーを使って、画面サイズ取得の タイミングを少しだけ遅延させる
 220  * window.onorientationchange = function() { setTimeout(function() { alert("W: " + window.innerWidth + ", H: " + window.innerHeight); }, 200); }
 221  * 横に傾けた時、正常に横向け時の 幅と高さが取得できている ただし、端末によってはうまく取得できな い場合がある(Galaxy S IIIとか・・・) 7
 222  *
 223  * http://sssslide.com/www.slideshare.net/hiroakiwakamatsu/ss-12718639
 224  *
 225  *
 226  * getBoundingClientRect で　fontsize の調査
 227  */
 228                 var X_ViewPort_resize =
 229                         // iOS もループで回す,,,iOS3.1.3, iOS6 で確認
 230                         X_ViewPort_useDetectionLoop ?
 231                                 (function(){
 232                                         var size;
 233                                         if( !X_ViewPort_lock ){
 234                                                 size = X_ViewPort_getWindowSize();
 235                                                 if( X_ViewPort_width !== size[ 0 ] || X_ViewPort_height !== size[ 1 ] ){
 236                                                         X_ViewPort_width = size[ 0 ];
 237                                                         X_ViewPort_height = size[ 1 ];
 238                                                         X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 239                                                         X_ViewPort_lock = true;
 240                                                 };
 241                                         };
 242
 243                                         size = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 244                                         if( X_ViewPort_baseFontSize !== size ){
 245                                                 X_ViewPort_baseFontSize && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_BASE_FONT_RESIZED );
 246                                                 X_ViewPort_baseFontSize = size;
 247                                         };
 248
 249                                 }) :
 250                                 (function( e ){
 251                                         console.log( '-- resize : ' + X_Timer_now() );
 252
 253                                         !X_ViewPort_lock && ( X_ViewPort_lock = true ) && X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 254                                         return X_Callback_PREVENT_DEFAULT | X_Callback_STOP_PROPAGATION;
 255                                 });
 256
 257                 function X_ViewPort_detectFinishResizing(){
 258                         var size = X_ViewPort_getWindowSize();
 259                         if( X_ViewPort_width !== size[ 0 ] || X_ViewPort_height !== size[ 1 ] ){
 260                                 X_ViewPort_width  = size[ 0 ];
 261                                 X_ViewPort_height = size[ 1 ];
 262                                 X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 263                         } else {
 264                                 console.log( '-- detectFinishResizing : ' + X_Timer_now() );
 265
 266                                 X_ViewPort[ 'asyncDispatch' ]( X_EVENT_VIEW_RESIZED );
 267                                 X_ViewPort_lock = false;
 268                                 if( X_ViewPort_orientationFlag ){
 269                                         X_ViewPort_orientationFlag = false;
 270                                         X_ViewPort[ 'asyncDispatch' ]( 100, { type : X_EVENT_VIEW_TURNED, 'orientation' : window.orientation } );
 271                                 };
 272                         };
 273                 };
 274
 275                 X_TEMP.onDomContentLoaded = function(){
 276                         var s, size, elmHtml, elmHead, elmBody, html, head, body;
 277
 278                         console.log( '> X_TEMP.onDomContentLoaded rs:' + X_ViewPort_readyState );
 279
 280                         if( X_EVENT_PRE_INIT <= X_ViewPort_readyState ) return X_Callback_UN_LISTEN;
 281                         X_ViewPort_readyState = X_EVENT_PRE_INIT;
 282
 283                         // DOMContentLoaded の無いブラウザで X_TEMP.onDomContentLoaded への参照が残り続けるのを回避
 284                         X_TEMP.onDomContentLoaded && X_ViewPort_document[ 'unlisten' ]( 'DOMContentLoaded', X_TEMP.onDomContentLoaded );
 285                         delete X_TEMP.onDomContentLoaded;
 286
 287                         elmHtml = document.documentElement ||
 288                                 X_UA_DOM.W3C ? document.getElementsByTagName( 'html' )[ 0 ] :
 289                                 X_UA_DOM.IE4 ? document.all.tags( 'html' )[ 0 ] : null;
 290
 291                         elmHead =
 292                                 X_UA_DOM.W3C ? document.getElementsByTagName( 'head' )[ 0 ] :
 293                                 X_UA_DOM.IE4 ? document.all.tags( 'head' )[ 0 ] : null;
 294
 295                         elmBody = document.body;
 296
 297                         X_ViewPort_rootElement = document.compatMode !== 'CSS1Compat' ? elmBody : elmHtml || elmBody;
 298
 299                         html = X[ 'Doc' ][ 'html' ] = X_Node_html = elmHtml && new Node( elmHtml )[ 'removeClass' ]( 'js-disabled' )[ 'addClass' ]( X_UA_classNameForHTML );
 300                         html[ '_flags' ] |= X_Node_State.IN_TREE;
 301
 302                         head = X[ 'Doc' ][ 'head' ] = X_Node_head = elmHead && new Node( elmHead );
 303
 304                         body = X[ 'Doc' ][ 'body' ] = X_Node_body = new Node( elmBody );
 305
 306                         body[ 'parent ' ] = head[ 'parent' ] = html;
 307                         html[ '_xnodes' ] = [ head, body ];
 308
 309                         html[ 'appendTo' ] = html[ 'prev' ] = html[ 'next' ] = html[ 'clone' ] = html[ 'remove' ] = html[ 'destroy' ] =
 310                         html[ 'create' ] = html[ 'createText' ] = html[ 'createAt' ] = html[ 'createTextAt' ] = html[ 'append' ] = html[ 'appendAt' ] = html[ 'empty' ] = html[ 'html' ] = html[ 'text' ] =
 311                         html[ 'css' ] = html[ 'cssText' ] =
 312                         head[ 'appendTo' ] = head[ 'prev' ] = head[ 'next' ] = head[ 'clone' ] = head[ 'remove' ] = head[ 'destroy' ] =
 313                         head[ 'createText' ] = head[ 'createTextAt' ] = head[ 'empty' ] = head[ 'html' ] = head[ 'text' ] = head[ 'css' ] = head[ 'cssText' ] =
 314                         body[ 'appendTo' ] = body[ 'prev' ] = body[ 'next' ] = body[ 'clone' ] = body[ 'remove' ] = body[ 'destroy' ] = new Function( 'return this' );
 315
 316                         X_ViewPort[ 'listenOnce' ]( X_EVENT_PRE_INIT, function(){
 317                                 X_ViewPort_readyState = X_EVENT_XTREE_READY;
 318                                 if( X_TEMP.X_Dom_useBuilder ) X_TEMP.X_Dom_useBuilder = !!document.body.children.length;
 319                                 !X_TEMP.X_Dom_useBuilder && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_XTREE_READY );
 320                         } );
 321
 322                         X_ViewPort[ 'listenOnce' ]( X_EVENT_XTREE_READY, function(){
 323                                 X_ViewPort_readyState = X_EVENT_INIT;
 324                                 //X_UA[ 'Opera7' ] && alert( 'bc' );
 325                                 X_Node_body[ 'appendAt' ]( 0,
 326                                         X_Node_systemNode = X_Doc_create( 'div', { 'class' : 'hidden-system-node' } ),
 327                                         X_Node_fontSizeNode = X_Doc_create( 'div', { 'class' : 'hidden-system-node' } )[ 'cssText' ]( 'line-height:1;height:1em;' )[ 'text' ]( 'X' )
 328                                 );
 329                                 X_Node_startUpdate();
 330
 331                                 X_ViewPort[ 'asyncDispatch' ]( X_EVENT_INIT );
 332                         } );
 333
 334                         X_ViewPort[ 'listenOnce' ]( X_EVENT_INIT, function(){
 335                                 var size = X_ViewPort_getWindowSize(),
 336
 337                                 // http://jsdo.it/imaya/kTYg
 338                                         body = document.body,
 339                                         defaultOverflow = document.body.style.overflow,
 340                                         w, h;
 341
 342                                 X_ViewPort_width  = size[ 0 ];
 343                                 X_ViewPort_height = size[ 1 ];
 344
 345                                 body.style.overflow = 'hidden';
 346                                 w = body.clientWidth;
 347                                 h = body.clientHeight;
 348
 349                                 body.style.overflow = 'scroll';
 350                                 w -= body.clientWidth;
 351                                 h -= body.clientHeight;
 352
 353                                 if( !w ) w = body.offsetWidth  - body.clientWidth;
 354                                 if( !h ) h = body.offsetHeight - body.clientHeight;
 355                                 body.style.overflow = defaultOverflow;
 356
 357                                 X_ViewPort_vScrollbarSize = w;
 358                                 X_ViewPort_hScrollbarSize = h;
 359                                 if( h <= 0 ){ // ie6, ie11, firefox で　負の値が返る
 360                                         console.log( 'invalid hScrollbarSize: ' + h );
 361                                         X_ViewPort_hScrollbarSize = w;
 362                                 };
 363
 364                                 //
 365                                 if( X_ViewPort_orientationchange ){
 366                                         X_EventDispatcher_systemListen( X_ViewPort, 'orientationchange', X_ViewPort_orientationchange );
 367                                 };
 368
 369                                 if( X_ViewPort_detectFontSize ){
 370                                         X_EventDispatcher_systemListen( X_ViewPort, 'resize', X_ViewPort_resize );
 371                                         X_Timer_add( 333, X_ViewPort_detectFontSize );
 372                                 } else {
 373                                         X_Timer_add( 333, X_ViewPort_resize );
 374                                 };
 375
 376                                 X_ViewPort_baseFontSize = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 377
 378                                 X_ViewPort[ 'asyncDispatch' ]( X_ViewPort_readyState = X_EVENT_XDOM_READY );
 379                         } );
 380
 381                         X_ViewPort[ 'asyncDispatch' ]( X_EVENT_PRE_INIT );
 382
 383
 384                         X_EventDispatcher_systemListen( X_ViewPort, [ 'beforeunload', 'unload' ] );
 385
 386 //ブラウザの戻るボタンで戻ったときに呼ばれるイベントとかキャッシュとかそこらへんのこと
 387 //http://d.hatena.ne.jp/koumiya/20080916/1221580149
 388
 389                         if( document[ 'hidden' ] !== undefined ){// iOS 7+
 390                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'visibilitychange', X_ViewPort );
 391                         } else
 392                         if( document[ 'mozHidden' ] !== undefined ){
 393                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'mozvisibilitychange', X_ViewPort );
 394                         } else
 395                         if( document[ 'webkitHidden' ] !== undefined ){
 396                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'webkitvisibilitychange', X_ViewPort );
 397                         } else
 398                         if( X_UA[ 'iOS' ] && window[ 'onpageshow' ] !== undefined ){
 399                                 X_EventDispatcher_systemListen( X_ViewPort, [ 'pageshow', 'pagehide' ] );
 400                         } else {
 401                                 X_EventDispatcher_systemListen( X_ViewPort, [ 'focus', 'blur' ] );
 402                         };
 403
 404                         return X_Callback_UN_LISTEN;
 405                 };
 406
 407                 function X_ViewPort_getWindowSize(){
 408                         return X_UA[ 'IE' ] ? // Opera10.1 では ズーム時に表示領域のサイズが取れない！
 409                                 [ X_ViewPort_rootElement.clientWidth, X_ViewPort_rootElement.clientHeight ] :
 410                                 X_UA[ 'Opera' ] < 12 ? // Opera10.1 では ズーム + resize 時に表示領域のサイズが取れない！
 411                                 [ X_ViewPort_rootElement.offsetWidth, X_ViewPort_rootElement.offsetHeight ] :
 412                                 [ window.innerWidth, window.innerHeight ];
 413                 };
 414
 415
 416 console.log( 'X.Dom dom:w3c=' + X_UA_DOM.W3C + ' ev:w3c=' + X_UA_EVENT.W3C );
 417
 418 /* -----------------------------------------------
 419  * Document Ready
 420  *  Dean Edwards/Matthias Miller/John Resig
 421  */
 422
 423 // SafariでJavaScriptのデバッグをする方法
 424 // safari1.3 可
 425 // http://shimax.cocolog-nifty.com/search/2006/09/safarijavascrip_c54d.html
 426
 427 /* for ie9+/Mozilla/Opera9 */
 428 if( X_UA_EVENT.W3C ){
 429         X_ViewPort_document[ 'listenOnce' ]( 'DOMContentLoaded', X_TEMP.onDomContentLoaded );
 430 } else
 431 if( 6 <= X_UA[ 'IE' ] && X[ 'inHead' ] ){
 432         // if this script in Head
 433         document.write( "<script id=__ie_onload defer src=javascript:void(0)><\/script>" );
 434         X_TEMP._script = document.getElementById( "__ie_onload" );
 435         X_TEMP._script.onreadystatechange = function(){
 436                 var s = X_TEMP._script;
 437                 if( s && s.readyState === 'complete' ){
 438                         s.onreadystatechange = X_emptyFunction;
 439                         s.onreadystatechange = null;
 440                         s.parentNode.removeChild( s );
 441                         delete X_TEMP._script;
 442                         X_TEMP.onDomContentLoaded && X_TEMP.onDomContentLoaded();
 443                 };
 444         };
 445 };
 446 // Re: onLoad doesn't work with Safari?
 447 // http://lists.apple.com/archives/web-dev/2003/Oct/msg00036.html
 448 if( X_UA[ 'WebKit' ] || X_UA[ 'Safari' ]  < 3 ){ // sniff
 449         X_Timer_add( 16, function(){
 450                 if( !X_TEMP.onDomContentLoaded ) return X_Callback_UN_LISTEN;
 451                 if( document.readyState === 'loaded' || document.readyState === 'complete' ) return X_TEMP.onDomContentLoaded();
 452         });
 453 };
 454
 455 /* for other browsers */
 456 X_ViewPort[ 'listenOnce' ]( 'load', X_TEMP.onDomContentLoaded );