0.6.x/js/01_core/21_XViewPort.js

   1
   2 var X_ViewPort_readyState,
   3         X_ViewPort_active = ( window.parent === window ) || !window.parent, // parent は frameに読み込まれた場合のieのerror回避
   4         X_ViewPort_activeTimerID,
   5         X_ViewPort_rootElement,
   6         X_ViewPort_lock,
   7         X_ViewPort_width,
   8         X_ViewPort_height,
   9         X_ViewPort_scrollX = 0,
  10         X_ViewPort_scrollY = 0,
  11         X_ViewPort_baseFontSize,
  12         X_ViewPort_vScrollbarSize,
  13         X_ViewPort_hScrollbarSize,
  14
  15         X_ViewPort_useDetectionLoop = X_UA[ 'IE' ] < 9 || X_UA[ 'iOS' ],
  16         X_ViewPort_detectFontSize = !X_ViewPort_useDetectionLoop && function(){
  17                         var size = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
  18                         if( X_ViewPort_baseFontSize !== size ){
  19                                 X_ViewPort_baseFontSize = size;
  20                                 X_ViewPort_baseFontSize && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_BASE_FONT_RESIZED );
  21                         };
  22         },
  23
  24         X_ViewPort_orientationFlag,
  25         X_ViewPort_orientationchange = window[ 'orientation' ] !== undefined && function( e ){
  26                 X_ViewPort_orientationFlag = true;
  27                 !X_UA[ 'Android' ] && X_ViewPort_resize();
  28                 //console.log( '-- orientationchange : ' + X[ 'ViewPort' ][ 'getSize' ][ 0 ] + ' ' + X[ 'ViewPort' ][ 'getSize' ][ 1 ] );
  29         },
  30
  31         X_ViewPort_document = X_EventDispatcher( document ),
  32
  33 X_ViewPort = X_Class_override(
  34         X_EventDispatcher( window ),
  35         {
  36
  37                 'handleEvent' : function( e ){
  38                         var href, i, name, active = false, xnode;
  39
  40                         switch( e.type ){
  41                                 case 'beforeunload' :
  42                                         // ie では　a href='javascript' な要素でも beforeunload が起こる
  43                                         href = e.target && e.target[ 'attr' ] && e.target[ 'attr' ]( 'href' );
  44                                         if( href && href.indexOf && href.indexOf( 'javascript:' ) === 0 ) return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
  45
  46                                         return X_ViewPort[ 'dispatch' ]( X_EVENT_BEFORE_UNLOAD );
  47
  48                                 case 'unload' :
  49                                         //https://developer.mozilla.org/ja/docs/Web/JavaScript/A_re-introduction_to_JavaScript
  50                                         //Firefox 1.5 の bfcache が無効になりますので、他に理由がない限り Firefox では unload リスナを登録するべきではないことに注意してください。
  51                                         X_ViewPort[ 'dispatch' ]( X_EVENT_UNLOAD );
  52                                 //alert('unload');
  53                                         X_ViewPort_document[ 'kill' ]();
  54                                         this[ 'kill' ]();
  55
  56                                         //X_System[ 'dispatch' ]( X_EVENT_SHUT_DOWN );
  57                                         break;
  58
  59                                 case 'visibilitychange' :
  60                                         console.log( e.type + ':' + document[ 'hidden' ] );
  61                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'hidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  62                                         break;
  63                                 case 'msvisibilitychange' :
  64                                         console.log( e.type + ':' + document[ 'msHidden' ] );
  65                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'msHidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  66                                         break;
  67                                 case 'mozvisibilitychange' :
  68                                         console.log( e.type + ':' + document[ 'mozHidden' ] );
  69                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'mozHidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  70                                         break;
  71                                 case 'webkitvisibilitychange' :
  72                                         console.log( e.type + ':' + document[ 'webkitHidden' ] );
  73                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'webkitHidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  74                                         break;
  75
  76                                 case 'blur' :
  77                                 case 'focusout' :
  78                                         if( X_UA[ 'IE' ] < 9 ){
  79                                                 xnode = X_Node_getXNode( document.activeElement );
  80                                                 if( xnode ){
  81                                                         xnode[ 'listenOnce' ]( [ 'focus', 'blur' ], X_ViewPort_detectFocusForIE );
  82                                                         //break;
  83                                                 };
  84                                                 if( X_ViewPort_activeTimerID ){
  85                                                         X_ViewPort_activeTimerID = X_Timer_remove( X_ViewPort_activeTimerID );
  86                                                 };
  87                                                 X_ViewPort_activeTimerID = X_Timer_once( 16, X_ViewPort_changeFocus );
  88                                                 return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
  89                                         };
  90                                 case 'pagehide' :
  91                                         active = true;
  92                                 case 'focus' :
  93                                 case 'pageshow' :
  94                                 case 'focusin' :
  95                                         if( X_ViewPort_active === active ){
  96                                                 X_ViewPort_active = !active;
  97                                                 console.log( e.type + ':' + X_ViewPort_active );
  98                                                 X_ViewPort[ 'dispatch' ]( active ? X_EVENT_VIEW_DEACTIVATE : X_EVENT_VIEW_ACTIVATE );
  99                                         };
 100                                         break;
 101                         };
 102                 }
 103
 104         }
 105 );
 106
 107 function X_ViewPort_detectFocusForIE( e ){
 108         console.log( 'iefix! ' + e.type + ':' + this.attr( 'tag' ) + ' isActive?:' + ( this[ '_rawObject' ] === document.activeElement ) );
 109
 110         X_ViewPort_active = e.type === 'focus';
 111
 112         if( this[ '_rawObject' ] !== document.activeElement ){
 113                 this[ 'unlisten' ]( X_ViewPort_active ? 'blur' : 'focus', X_ViewPort_detectFocusForIE );
 114         };
 115         if( X_ViewPort_activeTimerID ){
 116                 X_ViewPort_activeTimerID = X_Timer_remove( X_ViewPort_activeTimerID );
 117         };
 118         X_ViewPort_activeTimerID = X_Timer_once( 16, X_ViewPort_changeFocus );
 119
 120         return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
 121 };
 122
 123 function X_ViewPort_changeFocus(){
 124         X_ViewPort[ 'dispatch' ]( X_ViewPort_active ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
 125         X_ViewPort_activeTimerID = 0;
 126 };
 127
 128
 129 /**
 130  * window に相当する ViewPort 情報を提供するオブジェクト。
 131  * @namespace X.ViewPort
 132  * @alias X.ViewPort
 133  */
 134 X[ 'ViewPort' ] = {
 135         /**
 136          *
 137          * @alias X.ViewPort.listen
 138          */
 139         'listen' : function( type, arg1, arg2, arg3 ){
 140                 var f;
 141
 142                 if( type <= X_ViewPort_readyState ){
 143                         /*
 144                          * X_EVENT_XDOM_READY 以後に listen した場合の対策
 145                          */
 146                         X_ViewPort[ 'asyncDispatch' ]( type );
 147                 };
 148
 149                 f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 150                 if( !f.kind ){
 151                         X_ViewPort[ 'listen' ]( type, this, arg1 );
 152                 } else
 153                 if( f.kind === X_CLOSURE_FUNC_ONLY ){
 154                         X_ViewPort[ 'listen' ]( type, this, f.func, f.supplement );
 155                 } else {
 156                         X_ViewPort[ 'listen' ]( type, arg1, arg2, arg3 );
 157                 };
 158                 return X[ 'ViewPort' ];
 159         },
 160
 161         /**
 162          *
 163          * @alias X.ViewPort.listenOnce
 164          */
 165         'listenOnce' : function( type, arg1, arg2, arg3 ){
 166                 var f;
 167
 168                 if( type <= X_ViewPort_readyState ){
 169                         /*
 170                          * X.Event.XDOM_READY 以後に listen した場合の対策
 171                          */
 172                         X_ViewPort[ 'asyncDispatch' ]( type );
 173                 };
 174
 175                 f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 176                 if( !f.kind ){
 177                         X_ViewPort[ 'listenOnce' ]( type, this, arg1 );
 178                 } else
 179                 if( f.kind === X_CLOSURE_FUNC_ONLY ){
 180                         X_ViewPort[ 'listenOnce' ]( type, this, f.func, f.supplement );
 181                 } else {
 182                         X_ViewPort[ 'listenOnce' ]( type, arg1, arg2, arg3 );
 183                 };
 184                 return X[ 'ViewPort' ];
 185         },
 186
 187         /**
 188          *
 189          * @alias X.ViewPort.unlisten
 190          */
 191         'unlisten' : function( type, arg1, arg2, arg3 ){
 192                 var f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 193
 194                 if( !f.kind ){
 195                         X_ViewPort[ 'unlisten' ]( type, this, arg1 );
 196                 } else
 197                 if( f.kind === X_CLOSURE_FUNC_ONLY ){
 198                         X_ViewPort[ 'unlisten' ]( type, this, f.func, f.supplement );
 199                 } else {
 200                         X_ViewPort[ 'unlisten' ]( type, arg1, arg2, arg3 );
 201                 };
 202                 return X[ 'ViewPort' ];
 203         },
 204
 205         /**
 206          *
 207          * @alias X.ViewPort.listening
 208          */
 209         'listening' : function( type, arg1, arg2, arg3 ){
 210                 var f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 211
 212                 if( !f.kind ){
 213                         return X_ViewPort[ 'listening' ]( type, this, arg1 );
 214                 } else
 215                 if( f.kind === X_CLOSURE_FUNC_ONLY ){
 216                         return X_ViewPort[ 'listening' ]( type, this, f.func, f.supplement );
 217                 };
 218                 return X_ViewPort[ 'listening' ]( type, arg1, arg2, arg3 );
 219         },
 220
 221         /**
 222          * hammer のテストファイルだけが使用
 223          * @alias X.ViewPort.asyncDispatch
 224          */
 225         'asyncDispatch' : function(){
 226                 return X_ViewPort[ 'asyncDispatch' ].apply( X_ViewPort, arguments );
 227         },
 228
 229         'getPointerPosition' : function(){
 230
 231         },
 232
 233         /* 要素が視界に入った  http://remysharp.com/2009/01/26/element-in-view-event-plugin/
 234          * TODO -> Node.call('inView')
 235          */
 236         'inView' : function( elm ){
 237
 238         },
 239
 240         /**
 241          *
 242          * @alias X.ViewPort.getSize
 243          */
 244         'getSize' : function(){
 245                 return [ X_ViewPort_width, X_ViewPort_height ];
 246         },
 247 //https://developer.mozilla.org/en-US/docs/Web/API/Element.getBoundingClientRect
 248 //use window.pageXOffset and window.pageYOffset instead of window.scrollX and window.scrollY
 249 //(((t = document.documentElement) || (t = document.body.parentNode)) && typeof t.ScrollLeft == 'number' ? t : document.body).ScrollLeft;
 250 //(((t = document.documentElement) || (t = document.body.parentNode)) && typeof t.ScrollTop == 'number' ? t : document.body).ScrollTop
 251
 252         /*
 253          * TODO X.Doc へ
 254          * @alias X.ViewPort.getDocumentSize
 255          */
 256         'getDocumentSize' : function(){
 257                 // 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。
 258                 // http://orera.g.hatena.ne.jp/edvakf/20100515/1273908051
 259         //http://onozaty.hatenablog.com/entry/20060803/p1
 260         // Safari2.0.4では標準・互換どちらも document.body
 261
 262                 X_Node_updateTimerID && X_Node_startUpdate();
 263                 /*X_UA[ 'Opera' ] ?
 264                         ( document.documentElement && document.documentElement.clientWidth ?
 265                                 new Function( 'return[document.documentElement.clientWidth,document.documentElement.clientHeight]' ) :
 266                                 new Function( 'return[document.body.clientWidth,document.body.clientHeight]' )
 267                         ) :*/
 268                 return [
 269                         X_ViewPort_rootElement.scrollWidth  || X_ViewPort_rootElement.offsetWidth,
 270                         X_ViewPort_rootElement.scrollHeight || X_ViewPort_rootElement.offsetHeight
 271                 ];
 272         },
 273
 274         /**
 275          *
 276          * @alias X.ViewPort.getScrollPosition
 277          */
 278         'getScrollPosition' :
 279                 window.pageXOffset !== undefined ?
 280                         ( function(){
 281                                 X_Node_updateTimerID && X_Node_startUpdate();
 282                                 return[ X_ViewPort_scrollX = window.pageXOffset, X_ViewPort_scrollY = window.pageYOffset ];
 283                         } ) :
 284                 window.scrollLeft  !== undefined ?
 285                         ( function(){
 286                                 X_Node_updateTimerID && X_Node_startUpdate();
 287                                 return[ X_ViewPort_scrollX = window.scrollLeft, X_ViewPort_scrollY = window.scrollTop ];
 288                         } ) :
 289                         ( function(){
 290                                 X_Node_updateTimerID && X_Node_startUpdate();
 291                                 // body は Safari2-
 292                                 return[ X_ViewPort_scrollX = X_ViewPort_rootElement.scrollLeft || document.body.scrollLeft, X_ViewPort_scrollY = X_ViewPort_rootElement.scrollTop || document.body.scrollTop ];
 293                         } ),
 294
 295         /**
 296          *
 297          * @alias X.ViewPort.getScrollbarSize
 298          */
 299         'getScrollbarSize' : function(){
 300                 return [ X_ViewPort_vScrollbarSize, X_ViewPort_hScrollbarSize ];
 301         },
 302
 303         /**
 304          *
 305          * @alias X.ViewPort.getBaseFontSize
 306          */
 307         'getBaseFontSize' : function(){
 308                 if( X_Node_updateTimerID ){
 309                         X_Node_startUpdate();
 310                         return X_ViewPort_baseFontSize = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 311                 };
 312                 return X_ViewPort_baseFontSize;
 313         },
 314
 315         /**
 316          * キーボードイベントを受け付ける
 317          * @alias X.ViewPort.isActive
 318          */
 319         'isActive' : function(){
 320                 return X_ViewPort_active;
 321         },
 322
 323         /**
 324          * 可視である。iframe 内のhtmlも
 325          * @alias X.ViewPort.isVisible
 326          */
 327         'isVisible' : function(){
 328                 return X_ViewPort_active;
 329         }
 330
 331 };
 332
 333
 334
 335 /* -----------------------------------------------
 336  * Resize
 337  *  original : uupaa.js
 338  *
 339  * TODO
 340  *  https://w3g.jp/blog/studies/ios7_1_minimal-ui_warning
 341  *  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
 342  *
 343  * http://looxu.blogspot.jp/2013/11/ios7mobile-safariwindowinnerheight.html
 344  * iOS7にて、Mobile Safariのwindow.innerHeightを正しく取得する方法
 345  *
 346  *  http://tenderfeel.xsrv.jp/javascript/1182/
 347  *  アドレスバーの高さの算出
 348  *
 349  * http://sssslide.com/www.slideshare.net/hiroakiwakamatsu/javascript-14514208
 350  * 1. 傾き時の画面サイズ取得ー 対処方法の例
 351  * (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
 352  * window.onorientationchange = function() { setTimeout(function() { alert('W: ' + window.innerWidth + ', H: ' + window.innerHeight); }, 200); }
 353  * 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
 354  *
 355  * http://sssslide.com/www.slideshare.net/hiroakiwakamatsu/ss-12718639
 356  *
 357  *
 358  * getBoundingClientRect で　fontsize の調査
 359  */
 360                 var X_ViewPort_resize =
 361                         // iOS もループで回す,,,iOS3.1.3, iOS6 で確認
 362                         X_ViewPort_useDetectionLoop ?
 363                                 (function(){
 364                                         var size;
 365                                         if( !X_ViewPort_lock ){
 366                                                 size = X_ViewPort_getWindowSize();
 367                                                 if( X_ViewPort_width !== size[ 0 ] || X_ViewPort_height !== size[ 1 ] ){
 368                                                         X_ViewPort_width = size[ 0 ];
 369                                                         X_ViewPort_height = size[ 1 ];
 370                                                         X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 371                                                         X_ViewPort_lock = true;
 372                                                 };
 373                                         };
 374
 375                                         size = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 376                                         if( X_ViewPort_baseFontSize !== size ){
 377                                                 X_ViewPort_baseFontSize && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_BASE_FONT_RESIZED );
 378                                                 X_ViewPort_baseFontSize = size;
 379                                         };
 380
 381                                 }) :
 382                                 (function( e ){
 383                                         console.log( '-- resize : ' + X_Timer_now() );
 384
 385                                         !X_ViewPort_lock && ( X_ViewPort_lock = true ) && X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 386                                         return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
 387                                 });
 388
 389                 function X_ViewPort_detectFinishResizing(){
 390                         var size = X_ViewPort_getWindowSize();
 391                         if( X_ViewPort_width !== size[ 0 ] || X_ViewPort_height !== size[ 1 ] ){
 392                                 X_ViewPort_width  = size[ 0 ];
 393                                 X_ViewPort_height = size[ 1 ];
 394                                 X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 395                         } else {
 396                                 console.log( '-- detectFinishResizing : ' + X_Timer_now() );
 397
 398                                 X_ViewPort[ 'asyncDispatch' ]( X_EVENT_VIEW_RESIZED );
 399                                 X_ViewPort_lock = false;
 400                                 if( X_ViewPort_orientationFlag ){
 401                                         X_ViewPort_orientationFlag = false;
 402                                         X_ViewPort[ 'asyncDispatch' ]( 100, { type : X_EVENT_VIEW_TURNED, 'orientation' : window.orientation } );
 403                                 };
 404                         };
 405                 };
 406
 407                 X_TEMP.onDomContentLoaded = function(){
 408                         var s, size, elmHtml, elmHead, elmBody, html, head, body;
 409
 410                         console.log( '> X_TEMP.onDomContentLoaded rs:' + X_ViewPort_readyState );
 411
 412                         if( X_EVENT_PRE_INIT <= X_ViewPort_readyState ) return X_CALLBACK_UN_LISTEN;
 413                         X_ViewPort_readyState = X_EVENT_PRE_INIT;
 414
 415                         // 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
 416                         X_TEMP.onDomContentLoaded && X_ViewPort_document[ 'unlisten' ]( 'DOMContentLoaded', X_TEMP.onDomContentLoaded );
 417                         delete X_TEMP.onDomContentLoaded;
 418
 419                         elmHtml = document.documentElement ||
 420                                 X_UA_DOM.W3C ? document.getElementsByTagName( 'html' )[ 0 ] :
 421                                 X_UA_DOM.IE4 ? document.all.tags( 'html' )[ 0 ] : null;
 422
 423                         elmHead =
 424                                 X_UA_DOM.W3C ? document.getElementsByTagName( 'head' )[ 0 ] :
 425                                 X_UA_DOM.IE4 ? document.all.tags( 'head' )[ 0 ] : null;
 426
 427                         elmBody = document.body;
 428
 429                         X_ViewPort_rootElement = document.compatMode !== 'CSS1Compat' ? elmBody : elmHtml || elmBody;
 430
 431         /**
 432          * Node( documentElement )
 433          * @alias X.Doc.html
 434          * @type {Node}
 435          */
 436                         X[ 'Doc' ][ 'html' ] = html = X_Node_html = elmHtml && Node( elmHtml )[ 'removeClass' ]( 'js-disabled' )[ 'addClass' ]( X_UA_classNameForHTML );
 437                         html[ '_flags' ] |= X_NodeFlags_IN_TREE;
 438
 439         /**
 440          * Node( head )
 441          * @alias X.Doc.head
 442          * @type {Node}
 443          */
 444                         X[ 'Doc' ][ 'head' ] = head = X_Node_head = elmHead && Node( elmHead );
 445
 446         /**
 447          * Node( documentElement )
 448          * @alias X.Doc.body
 449          * @type {Node}
 450          */
 451                         X[ 'Doc' ][ 'body' ] = body = X_Node_body = Node( elmBody );
 452
 453                         body[ 'parent ' ] = head[ 'parent' ] = html;
 454                         html[ '_xnodes' ] = [ head, body ];
 455
 456                         html[ 'appendTo' ] = html[ 'prev' ] = html[ 'next' ] = html[ 'clone' ] = html[ 'remove' ] = html[ 'kill' ] =
 457                         html[ 'create' ] = html[ 'createText' ] = html[ 'createAt' ] = html[ 'createTextAt' ] = html[ 'append' ] = html[ 'appendAt' ] = html[ 'empty' ] = html[ 'html' ] = html[ 'text' ] =
 458                         html[ 'css' ] = html[ 'cssText' ] =
 459                         head[ 'appendTo' ] = head[ 'prev' ] = head[ 'next' ] = head[ 'clone' ] = head[ 'remove' ] = head[ 'kill' ] =
 460                         head[ 'createText' ] = head[ 'createTextAt' ] = head[ 'empty' ] = head[ 'html' ] = head[ 'text' ] = head[ 'css' ] = head[ 'cssText' ] =
 461                         body[ 'appendTo' ] = body[ 'prev' ] = body[ 'next' ] = body[ 'clone' ] = body[ 'remove' ] = body[ 'kill' ] = new Function( 'return this' );
 462
 463                         X_ViewPort[ 'listenOnce' ]( X_EVENT_PRE_INIT, function(){
 464                                 X_ViewPort_readyState = X_EVENT_XTREE_READY;
 465                                 if( X_TEMP.X_Dom_useBuilder ) X_TEMP.X_Dom_useBuilder = !!document.body.children.length;
 466                                 !X_TEMP.X_Dom_useBuilder && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_XTREE_READY );
 467                         } );
 468
 469                         X_ViewPort[ 'listenOnce' ]( X_EVENT_XTREE_READY, function(){
 470                                 X_ViewPort_readyState = X_EVENT_INIT;
 471                                 //X_UA[ 'Opera7' ] && alert( 'bc' );
 472                                 X_Node_body[ 'appendAt' ]( 0,
 473                                         X_Node_systemNode = X_Doc_create( 'div', { 'class' : 'hidden-system-node' } ),
 474                                         X_Node_fontSizeNode = X_Doc_create( 'div', { 'class' : 'hidden-system-node' } )[ 'cssText' ]( 'line-height:1;height:1em;' )[ 'text' ]( 'X' )
 475                                 );
 476                                 X_Node_startUpdate();
 477
 478                                 X_ViewPort[ 'asyncDispatch' ]( X_EVENT_INIT );
 479                         } );
 480
 481                         X_ViewPort[ 'listenOnce' ]( X_EVENT_INIT, function(){
 482                                 var size = X_ViewPort_getWindowSize(),
 483
 484                                 // http://jsdo.it/imaya/kTYg
 485                                         body = document.body,
 486                                         defaultOverflow = document.body.style.overflow,
 487                                         w, h;
 488
 489                                 X_ViewPort_width  = size[ 0 ];
 490                                 X_ViewPort_height = size[ 1 ];
 491
 492                                 body.style.overflow = 'hidden';
 493                                 w = body.clientWidth;
 494                                 h = body.clientHeight;
 495
 496                                 body.style.overflow = 'scroll';
 497                                 w -= body.clientWidth;
 498                                 h -= body.clientHeight;
 499
 500                                 if( !w ) w = body.offsetWidth  - body.clientWidth;
 501                                 if( !h ) h = body.offsetHeight - body.clientHeight;
 502                                 body.style.overflow = defaultOverflow;
 503
 504                                 X_ViewPort_vScrollbarSize = w;
 505                                 X_ViewPort_hScrollbarSize = h;
 506                                 if( h <= 0 ){ // ie6, ie11, firefox で　負の値が返る
 507                                         console.log( 'invalid hScrollbarSize: ' + h );
 508                                         X_ViewPort_hScrollbarSize = w;
 509                                 };
 510
 511                                 //
 512                                 if( X_ViewPort_orientationchange ){
 513                                         X_EventDispatcher_systemListen( X_ViewPort, 'orientationchange', X_ViewPort_orientationchange );
 514                                 };
 515
 516                                 if( X_ViewPort_detectFontSize ){
 517                                         X_EventDispatcher_systemListen( X_ViewPort, 'resize', X_ViewPort_resize );
 518                                         X_Timer_add( 333, X_ViewPort_detectFontSize );
 519                                 } else {
 520                                         X_Timer_add( 333, X_ViewPort_resize );
 521                                 };
 522
 523                                 X_ViewPort_baseFontSize = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 524
 525                                 X_ViewPort[ 'asyncDispatch' ]( X_ViewPort_readyState = X_EVENT_XDOM_READY );
 526                         } );
 527
 528                         X_ViewPort[ 'asyncDispatch' ]( X_EVENT_PRE_INIT );
 529
 530
 531                         X_EventDispatcher_systemListen( X_ViewPort, [ 'beforeunload', 'unload' ] );
 532
 533 //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
 534 //http://d.hatena.ne.jp/koumiya/20080916/1221580149
 535
 536 console.log( '------------------->' );
 537
 538                         if( document[ 'webkitHidden' ] !== undefined ){
 539                                 console.log( '--> has webkitvisibilitychange' );
 540                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'webkitvisibilitychange', X_ViewPort );
 541                         } else
 542                         if( document[ 'hidden' ] !== undefined ){// iOS 7+
 543                                 console.log( '--> has visibilitychange' );
 544                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'visibilitychange', X_ViewPort );
 545                                 document.onvisibilitychange = function(){ console.log( '!!!!!!!!!!!!!!!!' ) };
 546                         } else
 547                         if( document[ 'msHidden' ] !== undefined ){
 548                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'msvisibilitychange', X_ViewPort );
 549                         } else
 550                         if( document[ 'mozHidden' ] !== undefined ){
 551                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'mozvisibilitychange', X_ViewPort );
 552                         };
 553
 554                         if( window[ 'onpageshow' ] !== undefined ){
 555                                 console.log( '-------------------> pageshow, pagehide' );
 556                                 X_EventDispatcher_systemListen( X_ViewPort, [ 'pageshow', 'pagehide' ] );
 557                         };
 558
 559                         if( document[ 'onfocusin' ] !== undefined ){
 560                                 console.log( '-------------------> focusin, focusout' );
 561                                 // https://github.com/ai/visibilityjs/blob/master/lib/visibility.fallback.js
 562                                 X_EventDispatcher_systemListen( X_ViewPort_document, [ 'focusin', 'focusout' ], X_ViewPort );
 563                         };
 564
 565                         X_EventDispatcher_systemListen( X_ViewPort, [ 'focus', 'blur' ] );
 566
 567                         return X_CALLBACK_UN_LISTEN;
 568                 };
 569
 570                 function X_ViewPort_getWindowSize(){
 571                         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！
 572                                 [ X_ViewPort_rootElement.clientWidth, X_ViewPort_rootElement.clientHeight ] :
 573                                 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！
 574                                 [ X_ViewPort_rootElement.offsetWidth, X_ViewPort_rootElement.offsetHeight ] :
 575                                 [ window.innerWidth, window.innerHeight ];
 576                 };
 577
 578
 579 console.log( 'X.Dom dom:w3c=' + X_UA_DOM.W3C + ' ev:w3c=' + X_UA_EVENT.W3C );
 580
 581 /* -----------------------------------------------
 582  * Document Ready
 583  *  Dean Edwards/Matthias Miller/John Resig
 584  */
 585
 586 // SafariでJavaScriptのデバッグをする方法
 587 // safari1.3 可
 588 // http://shimax.cocolog-nifty.com/search/2006/09/safarijavascrip_c54d.html
 589
 590 /* for ie9+/Mozilla/Opera9 */
 591 if( X_UA_EVENT.W3C ){
 592         X_ViewPort_document[ 'listenOnce' ]( 'DOMContentLoaded', X_TEMP.onDomContentLoaded );
 593 } else
 594 if( 6 <= X_UA[ 'IE' ] && X[ 'inHead' ] && !X_UA[ 'ieExeComError' ] ){ // standalone の除外 ->  && !X_UA[ 'ieExeComError' ]
 595         // if this script in Head
 596         document.write( '<script id=__ieonload defer src=javascript:void(0)></script>' );
 597         X_TEMP._script = document.getElementById( '__ieonload' );
 598
 599         // 上のコードはスタンドアローン版ie6でエラー
 600     //X_TEMP._script = document.createElement( '<script id=__ieonload defer src=javascript:void(0)></script>' ) ;
 601     //document.getElementsByTagName( 'head' )[ 0 ].appendChild( X_TEMP._script );
 602
 603         X_TEMP._script.onreadystatechange = function(){
 604                 var s = X_TEMP._script;
 605                 if( s && s.readyState === 'complete' ){
 606                         s.onreadystatechange = X_emptyFunction;
 607                         s.onreadystatechange = null;
 608                         s.removeNode( true );
 609                         delete X_TEMP._script;
 610                         X_TEMP.onDomContentLoaded && X_TEMP.onDomContentLoaded();
 611                 };
 612         };
 613 };
 614 // Re: onLoad doesn't work with Safari?
 615 // http://lists.apple.com/archives/web-dev/2003/Oct/msg00036.html
 616 if( X_UA[ 'WebKit' ] || X_UA[ 'Safari' ]  < 3 ){ // sniff
 617         X_Timer_add( 16, function(){
 618                 if( !X_TEMP.onDomContentLoaded ) return X_CALLBACK_UN_LISTEN;
 619                 if( document.readyState === 'loaded' || document.readyState === 'complete' ) return X_TEMP.onDomContentLoaded();
 620         });
 621 };
 622
 623 /* for other browsers */
 624 X_ViewPort[ 'listenOnce' ]( 'load', X_TEMP.onDomContentLoaded );