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( X_Type_isString( href ) && !href.toLowerCase().indexOf( 'javascript:' ) ) 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                                         X_ViewPort[ '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                                         // TODO ie5...
  79                                         if( 5.5 < X_UA[ 'IE' ] && X_UA[ 'IE' ] < 9 ){
  80                                                 xnode = X_Node_getXNode( document.activeElement );
  81                                                 if( xnode ){
  82                                                         xnode[ 'listenOnce' ]( [ 'focus', 'blur' ], X_ViewPort_detectFocusForIE );
  83                                                         //break;
  84                                                 };
  85                                                 if( X_ViewPort_activeTimerID ){
  86                                                         X_ViewPort_activeTimerID = X_Timer_remove( X_ViewPort_activeTimerID );
  87                                                 };
  88                                                 X_ViewPort_activeTimerID = X_Timer_once( 16, X_ViewPort_changeFocus );
  89                                                 return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
  90                                         };
  91                                         // 他の要素のfocusout がバブルアップしてきたもの
  92                                         if( e.target !== X_ViewPort_document ) break;
  93                                 case 'pagehide' :
  94                                         active = true;
  95                                 case 'focus' :
  96                                 case 'pageshow' :
  97                                 case 'focusin' :
  98                                         if( X_ViewPort_active === active ){
  99                                                 X_ViewPort_active = !active;
 100                                                 console.log( e.type + ':' + X_ViewPort_active );
 101                                                 X_ViewPort[ 'dispatch' ]( active ? X_EVENT_VIEW_DEACTIVATE : X_EVENT_VIEW_ACTIVATE );
 102                                         };
 103                                         break;
 104                         };
 105                 }
 106
 107         }
 108 );
 109
 110 function X_ViewPort_detectFocusForIE( e ){
 111         //console.log( 'iefix! ' + e.type + ':' + this.attr( 'tag' ) + ' isActive?:' + ( this[ '_rawObject' ] === document.activeElement ) );
 112         var elmActive = X_Script_try( X_Object_find, [ document, 'activeElement' ] );
 113         X_ViewPort_active = e.type === 'focus';
 114
 115
 116         if( elmActive && this[ '_rawObject' ] !== elmActive ){
 117                 this[ 'unlisten' ]( X_ViewPort_active ? 'blur' : 'focus', X_ViewPort_detectFocusForIE );
 118                 console.log( '>>>>>> activeElement 取得 不一致　' + this._tag );
 119         } else
 120         if( !elmActive ){
 121                 console.log( '******** activeElement 取得のエラー' );
 122         } else if( elmActive ){
 123                 console.log( '>>>>>> activeElement 取得' );
 124         };
 125
 126         if( X_ViewPort_activeTimerID ){
 127                 X_Timer_remove( X_ViewPort_activeTimerID );
 128         };
 129         X_ViewPort_activeTimerID = X_Timer_once( 16, X_ViewPort_changeFocus );
 130
 131         return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
 132 };
 133
 134 function X_ViewPort_changeFocus(){
 135         X_ViewPort[ 'dispatch' ]( X_ViewPort_active ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
 136         X_ViewPort_activeTimerID = 0;
 137 };
 138
 139
 140 // TODO EventDispatcherProxy
 141 /**
 142  * window に相当する ViewPort 情報を提供するオブジェクト。
 143  * @namespace X.ViewPort
 144  * @alias X.ViewPort
 145  */
 146 X[ 'ViewPort' ] = {
 147         /**
 148          *
 149          * @alias X.ViewPort.listen
 150          */
 151         'listen' : function( type, arg1, arg2, arg3 ){
 152                 var f;
 153
 154                 if( type <= X_ViewPort_readyState ){
 155                         /*
 156                          * X_EVENT_XDOM_READY 以後に listen した場合の対策
 157                          */
 158                         X_ViewPort[ 'asyncDispatch' ]( type );
 159                 };
 160
 161                 f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 162                 if( !f.cbKind ){
 163                         X_ViewPort[ 'listen' ]( type, this, arg1 );
 164                 } else
 165                 if( f.cbKind === X_CLOSURE_FUNC_ONLY ){
 166                         X_ViewPort[ 'listen' ]( type, this, f.func, f.supplement );
 167                 } else {
 168                         X_ViewPort[ 'listen' ]( type, arg1, arg2, arg3 );
 169                 };
 170                 return X[ 'ViewPort' ];
 171         },
 172
 173         /**
 174          *
 175          * @alias X.ViewPort.listenOnce
 176          */
 177         'listenOnce' : function( type, arg1, arg2, arg3 ){
 178                 var f;
 179
 180                 if( type <= X_ViewPort_readyState ){
 181                         /*
 182                          * X.Event.XDOM_READY 以後に listen した場合の対策
 183                          */
 184                         X_ViewPort[ 'asyncDispatch' ]( type );
 185                 };
 186
 187                 f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 188                 if( !f.cbKind ){
 189                         X_ViewPort[ 'listenOnce' ]( type, this, arg1 );
 190                 } else
 191                 if( f.cbKind === X_CLOSURE_FUNC_ONLY ){
 192                         X_ViewPort[ 'listenOnce' ]( type, this, f.func, f.supplement );
 193                 } else {
 194                         X_ViewPort[ 'listenOnce' ]( type, arg1, arg2, arg3 );
 195                 };
 196                 return X[ 'ViewPort' ];
 197         },
 198
 199         /**
 200          *
 201          * @alias X.ViewPort.unlisten
 202          */
 203         'unlisten' : function( type, arg1, arg2, arg3 ){
 204                 var f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 205
 206                 if( !f.cbKind ){
 207                         X_ViewPort[ 'unlisten' ]( type, this, arg1 );
 208                 } else
 209                 if( f.cbKind === X_CLOSURE_FUNC_ONLY ){
 210                         X_ViewPort[ 'unlisten' ]( type, this, f.func, f.supplement );
 211                 } else {
 212                         X_ViewPort[ 'unlisten' ]( type, arg1, arg2, arg3 );
 213                 };
 214                 return X[ 'ViewPort' ];
 215         },
 216
 217         /**
 218          *
 219          * @alias X.ViewPort.listening
 220          */
 221         'listening' : function( type, arg1, arg2, arg3 ){
 222                 var f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 223
 224                 if( !f.cbKind ){
 225                         return X_ViewPort[ 'listening' ]( type, this, arg1 );
 226                 } else
 227                 if( f.cbKind === X_CLOSURE_FUNC_ONLY ){
 228                         return X_ViewPort[ 'listening' ]( type, this, f.func, f.supplement );
 229                 };
 230                 return X_ViewPort[ 'listening' ]( type, arg1, arg2, arg3 );
 231         },
 232
 233         /**
 234          * hammer のテストファイルだけが使用
 235          * @alias X.ViewPort.asyncDispatch
 236          */
 237         'asyncDispatch' : function(){
 238                 return X_ViewPort[ 'asyncDispatch' ].apply( X_ViewPort, arguments );
 239         },
 240
 241         'getPointerPosition' : function(){
 242
 243         },
 244
 245         /* 要素が視界に入った  http://remysharp.com/2009/01/26/element-in-view-event-plugin/
 246          * TODO -> Node.call('inView')
 247          */
 248         'inView' : function( elm ){
 249
 250         },
 251
 252         /**
 253          *
 254          * @alias X.ViewPort.getSize
 255          */
 256         'getSize' : function(){
 257                 return [ X_ViewPort_width, X_ViewPort_height ];
 258         },
 259 //https://developer.mozilla.org/en-US/docs/Web/API/Element.getBoundingClientRect
 260 //use window.pageXOffset and window.pageYOffset instead of window.scrollX and window.scrollY
 261 //(((t = document.documentElement) || (t = X_elmBody.parentNode)) && typeof t.ScrollLeft == 'number' ? t : X_elmBody).ScrollLeft;
 262 //(((t = document.documentElement) || (t = X_elmBody.parentNode)) && typeof t.ScrollTop == 'number' ? t : X_elmBody).ScrollTop
 263
 264         // TODO X.Doc へ
 265         /**
 266          * @alias X.ViewPort.getDocumentSize
 267          */
 268         'getDocumentSize' : function(){
 269                 // 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。
 270                 // http://orera.g.hatena.ne.jp/edvakf/20100515/1273908051
 271         //http://onozaty.hatenablog.com/entry/20060803/p1
 272         // Safari2.0.4では標準・互換どちらも document.body
 273         // http://hisasann.com/housetect/2008/08/jqueryheightwidthopera95.html このdocument.body[ "client" + name ]はおそらくOpera9.5未満のバージョンで有効なんじゃないかな？
 274
 275                 X_Node_updateTimerID && X_Node_startUpdate();
 276                 /*X_UA[ 'Opera' ] ?
 277                         ( document.documentElement && document.documentElement.clientWidth ?
 278                                 new Function( 'return[document.documentElement.clientWidth,document.documentElement.clientHeight]' ) :
 279                                 new Function( 'return[X_elmBody.clientWidth,X_elmBody.clientHeight]' )
 280                         ) :*/
 281                 return [
 282                         X_ViewPort_rootElement.scrollWidth  || X_ViewPort_rootElement.offsetWidth,
 283                         X_ViewPort_rootElement.scrollHeight || X_ViewPort_rootElement.offsetHeight
 284                 ];
 285         },
 286
 287         /**
 288          *
 289          * @alias X.ViewPort.getScrollPosition
 290          */
 291         'getScrollPosition' :
 292                 window.pageXOffset !== undefined ?
 293                         ( function(){
 294                                 X_Node_updateTimerID && X_Node_startUpdate();
 295                                 return[ X_ViewPort_scrollX = window.pageXOffset, X_ViewPort_scrollY = window.pageYOffset ];
 296                         } ) :
 297                 window.scrollLeft  !== undefined ?
 298                         ( function(){
 299                                 X_Node_updateTimerID && X_Node_startUpdate();
 300                                 return[ X_ViewPort_scrollX = window.scrollLeft, X_ViewPort_scrollY = window.scrollTop ];
 301                         } ) :
 302                         ( function(){
 303                                 X_Node_updateTimerID && X_Node_startUpdate();
 304                                 // body は Safari2-
 305                                 return[ X_ViewPort_scrollX = X_ViewPort_rootElement.scrollLeft || X_elmBody.scrollLeft, X_ViewPort_scrollY = X_ViewPort_rootElement.scrollTop || X_elmBody.scrollTop ];
 306                         } ),
 307
 308         /**
 309          *
 310          * @alias X.ViewPort.getScrollbarSize
 311          */
 312         'getScrollbarSize' : function(){
 313                 return [ X_ViewPort_vScrollbarSize, X_ViewPort_hScrollbarSize ];
 314         },
 315
 316         /**
 317          *
 318          * @alias X.ViewPort.getBaseFontSize
 319          */
 320         'getBaseFontSize' : function(){
 321                 if( X_Node_updateTimerID ){
 322                         X_Node_startUpdate();
 323                         return X_ViewPort_baseFontSize = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 324                 };
 325                 return X_ViewPort_baseFontSize;
 326         },
 327
 328         /**
 329          * キーボードイベントを受け付ける
 330          * @alias X.ViewPort.isActive
 331          */
 332         'isActive' : function(){
 333                 return X_ViewPort_active;
 334         },
 335
 336         /**
 337          * 可視である。iframe 内のhtmlも
 338          * @alias X.ViewPort.isVisible
 339          */
 340         'isVisible' : function(){
 341                 return X_ViewPort_active;
 342         }
 343
 344 };
 345
 346
 347
 348 /* -----------------------------------------------
 349  * Resize
 350  *  original : uupaa.js
 351  *
 352  * TODO
 353  *  https://w3g.jp/blog/studies/ios7_1_minimal-ui_warning
 354  *  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
 355  *
 356  * http://looxu.blogspot.jp/2013/11/ios7mobile-safariwindowinnerheight.html
 357  * iOS7にて、Mobile Safariのwindow.innerHeightを正しく取得する方法
 358  *
 359  *  http://tenderfeel.xsrv.jp/javascript/1182/
 360  *  アドレスバーの高さの算出
 361  *
 362  * http://sssslide.com/www.slideshare.net/hiroakiwakamatsu/javascript-14514208
 363  * 1. 傾き時の画面サイズ取得ー 対処方法の例
 364  * (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
 365  * window.onorientationchange = function() { setTimeout(function() { alert('W: ' + window.innerWidth + ', H: ' + window.innerHeight); }, 200); }
 366  * 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
 367  *
 368  * http://sssslide.com/www.slideshare.net/hiroakiwakamatsu/ss-12718639
 369  *
 370  *
 371  * getBoundingClientRect で　fontsize の調査
 372  */
 373                 var X_ViewPort_resize =
 374                         // iOS もループで回す,,,iOS3.1.3, iOS6 で確認
 375                         X_ViewPort_useDetectionLoop ?
 376                                 (function(){
 377                                         var size;
 378                                         if( !X_ViewPort_lock ){
 379                                                 size = X_ViewPort_getWindowSize();
 380                                                 if( X_ViewPort_width !== size[ 0 ] || X_ViewPort_height !== size[ 1 ] ){
 381                                                         X_ViewPort_width = size[ 0 ];
 382                                                         X_ViewPort_height = size[ 1 ];
 383                                                         X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 384                                                         X_ViewPort_lock = true;
 385                                                 };
 386                                         };
 387
 388                                         size = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 389                                         if( X_ViewPort_baseFontSize !== size ){
 390                                                 X_ViewPort_baseFontSize && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_BASE_FONT_RESIZED );
 391                                                 X_ViewPort_baseFontSize = size;
 392                                         };
 393
 394                                 }) :
 395                                 (function( e ){
 396                                         console.log( '-- resize : ' + X_Timer_now() );
 397
 398                                         !X_ViewPort_lock && ( X_ViewPort_lock = true ) && X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 399                                         return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
 400                                 });
 401
 402                 function X_ViewPort_detectFinishResizing(){
 403                         var size = X_ViewPort_getWindowSize();
 404                         if( X_ViewPort_width !== size[ 0 ] || X_ViewPort_height !== size[ 1 ] ){
 405                                 X_ViewPort_width  = size[ 0 ];
 406                                 X_ViewPort_height = size[ 1 ];
 407                                 X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 408                         } else {
 409                                 console.log( '-- detectFinishResizing : ' + X_Timer_now() );
 410
 411                                 X_ViewPort[ 'asyncDispatch' ]( X_EVENT_VIEW_RESIZED );
 412                                 X_ViewPort_lock = false;
 413                                 if( X_ViewPort_orientationFlag ){
 414                                         X_ViewPort_orientationFlag = false;
 415                                         X_ViewPort[ 'asyncDispatch' ]( 100, { type : X_EVENT_VIEW_TURNED, 'orientation' : window.orientation } );
 416                                 };
 417                         };
 418                 };
 419
 420                 X_TEMP.onDomContentLoaded = function(){
 421                         var html, head, body;
 422
 423                         console.log( '> X_TEMP.onDomContentLoaded rs:' + X_ViewPort_readyState );
 424
 425                         if( X_EVENT_PRE_INIT <= X_ViewPort_readyState ) return X_CALLBACK_UN_LISTEN;
 426                         X_ViewPort_readyState = X_EVENT_PRE_INIT;
 427
 428                         // 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
 429                         X_TEMP.onDomContentLoaded && X_ViewPort_document[ 'unlisten' ]( 'DOMContentLoaded', X_TEMP.onDomContentLoaded );
 430                         delete X_TEMP.onDomContentLoaded;
 431
 432                         X_elmBody = document.body;
 433
 434                         X_ViewPort_rootElement = document.compatMode !== 'CSS1Compat' ? X_elmBody : X_elmHtml || X_elmBody;
 435
 436         /**
 437          * X.Node( documentElement )
 438          * @alias X.Doc.html
 439          * @type {Node}
 440          */
 441                         X[ 'Doc' ][ 'html' ] = html = X_Node_html = X_elmHtml && Node( X_elmHtml )[ 'removeClass' ]( 'js-disabled' )[ 'addClass' ]( X_UA_classNameForHTML );
 442                         html[ '_flags' ] |= X_NodeFlags_IN_TREE;
 443
 444         /**
 445          * X.Node( head )
 446          * @alias X.Doc.head
 447          * @type {Node}
 448          */
 449                         X[ 'Doc' ][ 'head' ] = head = X_Node_head = X_elmHead && Node( X_elmHead );
 450
 451         /**
 452          * X.Node( body )
 453          * @alias X.Doc.body
 454          * @type {Node}
 455          */
 456                         X[ 'Doc' ][ 'body' ] = body = X_Node_body = Node( X_elmBody );
 457
 458                         body[ 'parent ' ] = head[ 'parent' ] = html;
 459                         html[ '_xnodes' ] = [ head, body ];
 460
 461                         html[ 'appendTo' ] = html[ 'prev' ] = html[ 'next' ] = html[ 'clone' ] = html[ 'remove' ] = html[ 'kill' ] =
 462                         html[ 'create' ] = html[ 'createText' ] = html[ 'createAt' ] = html[ 'createTextAt' ] = html[ 'append' ] = html[ 'appendAt' ] = html[ 'empty' ] = html[ 'html' ] = html[ 'text' ] =
 463                         html[ 'css' ] = html[ 'cssText' ] =
 464                         head[ 'appendTo' ] = head[ 'prev' ] = head[ 'clone' ] = head[ 'remove' ] = head[ 'kill' ] =
 465                         head[ 'createText' ] = head[ 'createTextAt' ] = head[ 'empty' ] = head[ 'html' ] = head[ 'text' ] = head[ 'css' ] = head[ 'cssText' ] =
 466                         body[ 'appendTo' ] = body[ 'next' ] = body[ 'clone' ] = body[ 'remove' ] = body[ 'kill' ] = new Function( 'return this' );
 467
 468                         X_ViewPort[ 'listenOnce' ]( X_EVENT_PRE_INIT, function(){
 469                                 X_ViewPort_readyState = X_EVENT_XTREE_READY;
 470                                 !X_TEMP.X_Dom_useBuilder && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_XTREE_READY );
 471                         } );
 472
 473                         X_ViewPort[ 'listenOnce' ]( X_EVENT_XTREE_READY, function(){
 474                                 X_ViewPort_readyState = X_EVENT_INIT;
 475                                 //X_UA[ 'Opera7' ] && alert( 'bc' );
 476                                 X_Node_body[ 'appendAt' ]( 0,
 477                                         X_Node_systemNode = X_Doc_create( 'div', { 'class' : 'hidden-system-node' } ),
 478                                         X_Node_fontSizeNode = X_Doc_create( 'div', { 'class' : 'hidden-system-node' } )[ 'cssText' ]( 'line-height:1;height:1em;' )[ 'text' ]( 'X' )
 479                                 );
 480                                 X_Node_startUpdate();
 481
 482                                 X_ViewPort[ 'asyncDispatch' ]( X_EVENT_INIT );
 483                         } );
 484
 485                         X_ViewPort[ 'listenOnce' ]( X_EVENT_INIT, function(){
 486                                 var size = X_ViewPort_getWindowSize(),
 487
 488                                 // http://jsdo.it/imaya/kTYg
 489                                         defaultOverflow = X_elmBody.style.overflow,
 490                                         w, h;
 491
 492                                 X_ViewPort_width  = size[ 0 ];
 493                                 X_ViewPort_height = size[ 1 ];
 494
 495                                 X_elmBody.style.overflow = 'hidden';
 496                                 w = X_elmBody.clientWidth;
 497                                 h = X_elmBody.clientHeight;
 498
 499                                 X_elmBody.style.overflow = 'scroll';
 500                                 w -= X_elmBody.clientWidth;
 501                                 h -= X_elmBody.clientHeight;
 502
 503                                 if( !w ) w = X_elmBody.offsetWidth  - X_elmBody.clientWidth;
 504                                 if( !h ) h = X_elmBody.offsetHeight - X_elmBody.clientHeight;
 505                                 X_elmBody.style.overflow = defaultOverflow;
 506
 507                                 X_ViewPort_vScrollbarSize = w;
 508                                 X_ViewPort_hScrollbarSize = h;
 509                                 if( h <= 0 ){ // ie6, ie11, firefox で　負の値が返る
 510                                         console.log( 'invalid hScrollbarSize: ' + h );
 511                                         X_ViewPort_hScrollbarSize = w;
 512                                 };
 513
 514                                 //
 515                                 if( X_ViewPort_orientationchange ){
 516                                         X_ViewPort[ 'listen' ]( 'orientationchange', X_ViewPort_orientationchange );
 517                                 };
 518
 519                                 if( X_ViewPort_detectFontSize ){
 520                                         X_ViewPort[ 'listen' ]( 'resize', X_ViewPort_resize );
 521                                         X_Timer_add( 333, X_ViewPort_detectFontSize );
 522                                 } else {
 523                                         X_Timer_add( 333, X_ViewPort_resize );
 524                                 };
 525
 526                                 X_ViewPort_baseFontSize = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 527
 528                                 X_ViewPort[ 'asyncDispatch' ]( X_ViewPort_readyState = X_EVENT_XDOM_READY );
 529                         } );
 530
 531                         if( X_TEMP.X_Dom_useBuilder ) X_TEMP.X_Dom_useBuilder = !!X_elmBody.children.length;
 532                         X_ViewPort[ 'asyncDispatch' ]( X_EVENT_PRE_INIT );
 533
 534                         X_ViewPort[ 'listen' ]( [ 'beforeunload', 'unload' ] );
 535
 536                 //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
 537                 //http://d.hatena.ne.jp/koumiya/20080916/1221580149
 538
 539                         if( document[ 'webkitHidden' ] !== undefined ){
 540                                 X_ViewPort_document[ 'listen' ]( 'webkitvisibilitychange', X_ViewPort );
 541                         } else
 542                         if( document[ 'hidden' ] !== undefined ){// iOS 7+
 543                                 X_ViewPort_document[ 'listen' ]( 'visibilitychange', X_ViewPort );
 544                         } else
 545                         if( document[ 'msHidden' ] !== undefined ){
 546                                 X_ViewPort_document[ 'listen' ]( 'msvisibilitychange', X_ViewPort );
 547                         } else
 548                         if( document[ 'mozHidden' ] !== undefined ){
 549                                 X_ViewPort_document[ 'listen' ]( 'mozvisibilitychange', X_ViewPort );
 550                         };
 551
 552                         if( window[ 'onpageshow' ] !== undefined ){
 553                                 X_ViewPort[ 'listen' ]( [ 'pageshow', 'pagehide' ] );
 554                         };
 555
 556                         if( document[ 'onfocusin' ] !== undefined ){
 557                                 // https://github.com/ai/visibilityjs/blob/master/lib/visibility.fallback.js
 558                                 X_ViewPort_document[ 'listen' ]( [ 'focusin', 'focusout' ], X_ViewPort );
 559                         };
 560
 561                         X_ViewPort[ 'listen' ]( [ 'focus', 'blur' ] );
 562
 563                         return X_CALLBACK_UN_LISTEN;
 564                 };
 565
 566                 function X_ViewPort_getWindowSize(){
 567                         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！
 568                                 [ X_ViewPort_rootElement.clientWidth, X_ViewPort_rootElement.clientHeight ] :
 569                                 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！
 570                                 [ X_ViewPort_rootElement.offsetWidth, X_ViewPort_rootElement.offsetHeight ] :
 571                                 [ window.innerWidth, window.innerHeight ];
 572                 };
 573
 574
 575 console.log( 'X.Dom dom:w3c=' + X_UA_DOM.W3C + ' ev:w3c=' + X_UA_EVENT.W3C );
 576
 577 /* -----------------------------------------------
 578  * Document Ready
 579  *  Dean Edwards/Matthias Miller/John Resig
 580  */
 581
 582 // SafariでJavaScriptのデバッグをする方法
 583 // safari1.3 可
 584 // http://shimax.cocolog-nifty.com/search/2006/09/safarijavascrip_c54d.html
 585
 586 /* for ie9+/Mozilla/Opera9 */
 587 if( X_UA_EVENT.W3C ){
 588         X_ViewPort_document[ 'listenOnce' ]( 'DOMContentLoaded', X_TEMP.onDomContentLoaded );
 589 } else
 590 if( 6 <= X_UA[ 'IE' ] && X[ 'inHead' ] /* && !X_UA[ 'ieExeComError' ] */ ){ // standalone の除外 ->  && !X_UA[ 'ieExeComError' ]
 591         // if this script in Head
 592         //document.write( '<script id=__ieonload defer src=javascript:void(0)></script>' );
 593         //X_TEMP._script = document.getElementById( '__ieonload' );
 594
 595         // 上のコードはスタンドアローン版ie6でエラー
 596     X_TEMP._script = document.createElement( '<script id=__ieonload defer src=javascript:void(0)></script>' );
 597     X_elmHead.appendChild( X_TEMP._script );
 598
 599         X_TEMP._script.onreadystatechange = function(){
 600                 var s = X_TEMP._script;
 601                 if( s && s.readyState === 'complete' ){
 602                         s.onreadystatechange = X_emptyFunction;
 603                         s.onreadystatechange = null;
 604                         s.removeNode( true );
 605                         delete X_TEMP._script;
 606                         X_TEMP.onDomContentLoaded && X_TEMP.onDomContentLoaded();
 607                 };
 608         };
 609 };
 610 // Re: onLoad doesn't work with Safari?
 611 // http://lists.apple.com/archives/web-dev/2003/Oct/msg00036.html
 612 if( X_UA[ 'WebKit' ] || X_UA[ 'Safari' ]  < 3 ){ // sniff
 613         X_Timer_add( 16, function(){
 614                 if( !X_TEMP.onDomContentLoaded ) return X_CALLBACK_UN_LISTEN;
 615                 if( document.readyState === 'loaded' || document.readyState === 'complete' ) return X_TEMP.onDomContentLoaded();
 616         });
 617 };
 618
 619 /* for other browsers */
 620 X_ViewPort[ 'listenOnce' ]( 'load', X_TEMP.onDomContentLoaded );