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