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