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, elm, 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                                         //X_System[ 'dispatch' ]( X_EVENT_SHUT_DOWN );
  56                                         break;
  57
  58                                 case 'visibilitychange' :
  59                                         console.log( e.type + ':' + document[ 'hidden' ] );
  60                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'hidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  61                                         break;
  62                                 case 'msvisibilitychange' :
  63                                         console.log( e.type + ':' + document[ 'msHidden' ] );
  64                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'msHidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  65                                         break;
  66                                 case 'mozvisibilitychange' :
  67                                         console.log( e.type + ':' + document[ 'mozHidden' ] );
  68                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'mozHidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  69                                         break;
  70                                 case 'webkitvisibilitychange' :
  71                                         console.log( e.type + ':' + document[ 'webkitHidden' ] );
  72                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'webkitHidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  73                                         break;
  74
  75                                 case 'blur' :
  76                                 case 'focusout' :
  77                                         if( X_UA[ 'IE' ] < 9 && ( elm = FocusUtility_getFocusedElement() ) ){
  78                                                 xnode = X_Node_getXNode( elm );
  79                                                 if( xnode ){
  80                                                         xnode[ 'listenOnce' ]( [ 'focus', 'blur' ], X_ViewPort_detectFocusForIE );
  81                                                         //break;
  82                                                 };
  83                                                 if( X_ViewPort_activeTimerID ){
  84                                                         X_ViewPort_activeTimerID = X_Timer_remove( X_ViewPort_activeTimerID );
  85                                                 };
  86                                                 X_ViewPort_activeTimerID = X_Timer_once( 16, X_ViewPort_changeFocus );
  87                                                 return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
  88                                         };
  89                                         // 他の要素のfocusout がバブルアップしてきたもの
  90                                         if( e.target !== X_ViewPort_document ) break;
  91                                 case 'pagehide' :
  92                                         active = true;
  93                                 case 'focus' :
  94                                 case 'pageshow' :
  95                                 case 'focusin' :
  96                                         if( X_ViewPort_active === active ){
  97                                                 X_ViewPort_active = !active;
  98                                                 console.log( e.type + ':' + X_ViewPort_active );
  99                                                 X_ViewPort[ 'dispatch' ]( active ? X_EVENT_VIEW_DEACTIVATE : X_EVENT_VIEW_ACTIVATE );
 100                                         };
 101                                         break;
 102                         };
 103                 }
 104
 105         }
 106 );
 107
 108 function X_ViewPort_detectFocusForIE( e ){
 109         //console.log( 'iefix! ' + e.type + ':' + this.attr( 'tag' ) + ' isActive?:' + ( this[ '_rawObject' ] === document.activeElement ) );
 110         var elmActive = FocusUtility_getFocusedElement();
 111         X_ViewPort_active = e.type === 'focus';
 112
 113
 114         if( elmActive && this[ '_rawObject' ] !== elmActive ){
 115                 this[ 'unlisten' ]( X_ViewPort_active ? 'blur' : 'focus', X_ViewPort_detectFocusForIE );
 116                 console.log( '>>>>>> activeElement 取得 不一致 ' + this._tag );
 117         } else
 118         if( !elmActive ){
 119                 //console.log( '******** activeElement 取得のエラー' );
 120         } else if( elmActive ){
 121                 //console.log( '>>>>>> activeElement 取得' );
 122         };
 123
 124         if( X_ViewPort_activeTimerID ){
 125                 X_Timer_remove( X_ViewPort_activeTimerID );
 126         };
 127         X_ViewPort_activeTimerID = X_Timer_once( 16, X_ViewPort_changeFocus );
 128
 129         return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
 130 };
 131
 132 function X_ViewPort_changeFocus(){
 133         X_ViewPort[ 'dispatch' ]( X_ViewPort_active ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
 134         X_ViewPort_activeTimerID = 0;
 135 };
 136
 137
 138 // TODO EventDispatcherProxy
 139 /**
 140  * window に相当する ViewPort 情報を提供するオブジェクト。
 141  * @namespace X.ViewPort
 142  * @alias X.ViewPort
 143  */
 144 X[ 'ViewPort' ] = {
 145         /**
 146          *
 147          * @alias X.ViewPort.listen
 148          */
 149         'listen' : function( type, arg1, arg2, arg3 ){
 150                 var f;
 151
 152                 if( type <= X_ViewPort_readyState ){
 153                         /*
 154                          * X_EVENT_XDOM_READY 以後に listen した場合の対策
 155                          */
 156                         X_ViewPort[ 'asyncDispatch' ]( type );
 157                 };
 158
 159                 f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 160                 if( !f.cbKind ){
 161                         X_ViewPort[ 'listen' ]( type, this, arg1 );
 162                 } else
 163                 if( f.cbKind === X_CLOSURE_FUNC_ONLY ){
 164                         X_ViewPort[ 'listen' ]( type, this, f.func, f.supplement );
 165                 } else {
 166                         X_ViewPort[ 'listen' ]( type, arg1, arg2, arg3 );
 167                 };
 168                 return X[ 'ViewPort' ];
 169         },
 170
 171         /**
 172          *
 173          * @alias X.ViewPort.listenOnce
 174          */
 175         'listenOnce' : function( type, arg1, arg2, arg3 ){
 176                 var f;
 177
 178                 if( type <= X_ViewPort_readyState ){
 179                         /*
 180                          * X.Event.XDOM_READY 以後に listen した場合の対策
 181                          */
 182                         X_ViewPort[ 'asyncDispatch' ]( type );
 183                 };
 184
 185                 f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 186                 if( !f.cbKind ){
 187                         X_ViewPort[ 'listenOnce' ]( type, this, arg1 );
 188                 } else
 189                 if( f.cbKind === X_CLOSURE_FUNC_ONLY ){
 190                         X_ViewPort[ 'listenOnce' ]( type, this, f.func, f.supplement );
 191                 } else {
 192                         X_ViewPort[ 'listenOnce' ]( type, arg1, arg2, arg3 );
 193                 };
 194                 return X[ 'ViewPort' ];
 195         },
 196
 197         /**
 198          *
 199          * @alias X.ViewPort.unlisten
 200          */
 201         'unlisten' : function( type, arg1, arg2, arg3 ){
 202                 var f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 203
 204                 if( !f.cbKind ){
 205                         X_ViewPort[ 'unlisten' ]( type, this, arg1 );
 206                 } else
 207                 if( f.cbKind === X_CLOSURE_FUNC_ONLY ){
 208                         X_ViewPort[ 'unlisten' ]( type, this, f.func, f.supplement );
 209                 } else {
 210                         X_ViewPort[ 'unlisten' ]( type, arg1, arg2, arg3 );
 211                 };
 212                 return X[ 'ViewPort' ];
 213         },
 214
 215         /**
 216          *
 217          * @alias X.ViewPort.listening
 218          */
 219         'listening' : function( type, arg1, arg2, arg3 ){
 220                 var f = X_Closure_classifyCallbackArgs( arg1, arg2, arg3 );
 221
 222                 if( !f.cbKind ){
 223                         return X_ViewPort[ 'listening' ]( type, this, arg1 );
 224                 } else
 225                 if( f.cbKind === X_CLOSURE_FUNC_ONLY ){
 226                         return X_ViewPort[ 'listening' ]( type, this, f.func, f.supplement );
 227                 };
 228                 return X_ViewPort[ 'listening' ]( type, arg1, arg2, arg3 );
 229         },
 230
 231         /**
 232          * hammer のテストファイルだけが使用
 233          * @alias X.ViewPort.asyncDispatch
 234          */
 235         'asyncDispatch' : function(){
 236                 return X_ViewPort[ 'asyncDispatch' ].apply( X_ViewPort, arguments );
 237         },
 238
 239         'getPointerPosition' : function(){
 240
 241         },
 242
 243         /* 要素が視界に入った  http://remysharp.com/2009/01/26/element-in-view-event-plugin/
 244          * TODO -> Node.call('inView')
 245          */
 246         'inView' : function( elm ){
 247
 248         },
 249
 250         /**
 251          *
 252          * @alias X.ViewPort.getSize
 253          */
 254         'getSize' : function(){
 255                 return [ X_ViewPort_width, X_ViewPort_height ];
 256         },
 257 //https://developer.mozilla.org/en-US/docs/Web/API/Element.getBoundingClientRect
 258 //use window.pageXOffset and window.pageYOffset instead of window.scrollX and window.scrollY
 259 //(((t = document.documentElement) || (t = X_elmBody.parentNode)) && typeof t.ScrollLeft == 'number' ? t : X_elmBody).ScrollLeft;
 260 //(((t = document.documentElement) || (t = X_elmBody.parentNode)) && typeof t.ScrollTop == 'number' ? t : X_elmBody).ScrollTop
 261
 262         // TODO X.Doc へ
 263         /**
 264          * @alias X.ViewPort.getDocumentSize
 265          */
 266         'getDocumentSize' : function(){
 267                 // 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。
 268                 // http://orera.g.hatena.ne.jp/edvakf/20100515/1273908051
 269         //http://onozaty.hatenablog.com/entry/20060803/p1
 270         // Safari2.0.4では標準・互換どちらも document.body
 271         // 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？
 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.split( '.' ).join( '_' ) );
 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                                 !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                                         defaultOverflow = X_elmBody.style.overflow,
 488                                         w, h;
 489
 490                                 X_ViewPort_width  = size[ 0 ];
 491                                 X_ViewPort_height = size[ 1 ];
 492
 493                                 X_elmBody.style.overflow = 'hidden';
 494                                 w = X_elmBody.clientWidth;
 495                                 h = X_elmBody.clientHeight;
 496
 497                                 X_elmBody.style.overflow = 'scroll';
 498                                 w -= X_elmBody.clientWidth;
 499                                 h -= X_elmBody.clientHeight;
 500
 501                                 if( !w ) w = X_elmBody.offsetWidth  - X_elmBody.clientWidth;
 502                                 if( !h ) h = X_elmBody.offsetHeight - X_elmBody.clientHeight;
 503                                 X_elmBody.style.overflow = defaultOverflow;
 504
 505                                 X_ViewPort_vScrollbarSize = w;
 506                                 X_ViewPort_hScrollbarSize = h;
 507                                 if( h <= 0 ){ // ie6, ie11, firefox で 負の値が返る
 508                                         console.log( 'invalid hScrollbarSize: ' + h );
 509                                         X_ViewPort_hScrollbarSize = w;
 510                                 };
 511
 512                                 //
 513                                 if( X_ViewPort_orientationchange ){
 514                                         X_ViewPort[ 'listen' ]( 'orientationchange', X_ViewPort_orientationchange );
 515                                 };
 516
 517                                 if( X_ViewPort_detectFontSize ){
 518                                         X_ViewPort[ 'listen' ]( 'resize', X_ViewPort_resize );
 519                                         X_Timer_add( 333, X_ViewPort_detectFontSize );
 520                                 } else {
 521                                         X_Timer_add( 333, X_ViewPort_resize );
 522                                 };
 523
 524                                 X_ViewPort_baseFontSize = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 525
 526                                 X_ViewPort[ 'asyncDispatch' ]( X_ViewPort_readyState = X_EVENT_XDOM_READY );
 527                         } );
 528
 529                         if( X_TEMP.X_Dom_useBuilder ) X_TEMP.X_Dom_useBuilder = !!X_elmBody.children.length;
 530                         X_ViewPort[ 'asyncDispatch' ]( X_EVENT_PRE_INIT );
 531
 532                         X_ViewPort[ 'listen' ]( [ 'beforeunload', 'unload' ] );
 533
 534                 //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
 535                 //http://d.hatena.ne.jp/koumiya/20080916/1221580149
 536
 537                         if( document[ 'hidden' ] !== undefined ){// iOS 7+
 538                                 X_ViewPort_document[ 'listen' ]( 'visibilitychange', X_ViewPort );
 539                         } else
 540                         if( document[ 'webkitHidden' ] !== undefined ){
 541                                 X_ViewPort_document[ 'listen' ]( 'webkitvisibilitychange', X_ViewPort );
 542                         } else
 543                         if( document[ 'msHidden' ] !== undefined ){
 544                                 X_ViewPort_document[ 'listen' ]( 'msvisibilitychange', X_ViewPort );
 545                         } else
 546                         if( document[ 'mozHidden' ] !== undefined ){
 547                                 // TODO Firefox + Android2 でブラウザにフォーカスが戻ったことが判らない...
 548                                 X_ViewPort_document[ 'listen' ]( 'mozvisibilitychange', X_ViewPort );
 549                         };
 550
 551                         if( window[ 'onpageshow' ] !== undefined ){
 552                                 X_ViewPort[ 'listen' ]( [ 'pageshow', 'pagehide' ] );
 553                         };
 554
 555                         if( document[ 'onfocusin' ] !== undefined ){
 556                                 // https://github.com/ai/visibilityjs/blob/master/lib/visibility.fallback.js
 557                                 X_ViewPort_document[ 'listen' ]( [ 'focusin', 'focusout' ], X_ViewPort );
 558                         };
 559
 560                         // TODO activeElement が無い対策
 561                         if( !FocusUtility_docActiveElmSupport ){
 562                                 X_ViewPort[ 'listen' ]( 'focus', X_ViewPort_fixActiveElm );
 563                         };
 564
 565                         X_ViewPort[ 'listen' ]( [ 'focus', 'blur' ] );
 566
 567                         return X_CALLBACK_UN_LISTEN;
 568                 };
 569
 570                 function X_ViewPort_fixActiveElm( e ){
 571                         // textNode を修正して elm にする処理は　EventDisptcher に入っている
 572                         FocusUtility_fixActiveElm = e.target[ '_rawObject' ];
 573                 };
 574
 575                 function X_ViewPort_getWindowSize(){
 576                         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！
 577                                 [ X_ViewPort_rootElement.clientWidth, X_ViewPort_rootElement.clientHeight ] :
 578                                 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！
 579                                 [ X_ViewPort_rootElement.offsetWidth, X_ViewPort_rootElement.offsetHeight ] :
 580                                 [ window.innerWidth, window.innerHeight ];
 581                 };
 582
 583
 584 console.log( 'X.Dom dom:w3c=' + X_UA_DOM.W3C + ' ev:w3c=' + X_UA_EVENT.W3C );
 585
 586 /* -----------------------------------------------
 587  * Document Ready
 588  *  Dean Edwards/Matthias Miller/John Resig
 589  */
 590
 591 // SafariでJavaScriptのデバッグをする方法
 592 // safari1.3 可
 593 // http://shimax.cocolog-nifty.com/search/2006/09/safarijavascrip_c54d.html
 594
 595 /* for ie9+/Mozilla/Opera9 */
 596 if( X_UA_EVENT.W3C ){
 597         X_ViewPort_document[ 'listenOnce' ]( 'DOMContentLoaded', X_TEMP.onDomContentLoaded );
 598 } else
 599 if( 6 <= X_UA[ 'IE' ] && X[ 'inHead' ] /* && !X_UA[ 'ieExeComError' ] */ ){ // standalone の除外 ->  && !X_UA[ 'ieExeComError' ]
 600         // if this script in Head
 601         //document.write( '<script id=__ieonload defer src=javascript:void(0)></script>' );
 602         //X_TEMP._script = document.getElementById( '__ieonload' );
 603
 604         // 上のコードはスタンドアローン版ie6でエラー
 605     X_TEMP._script = document.createElement( '<script id=__ieonload defer src=javascript:void(0)></script>' );
 606     X_elmHead.appendChild( X_TEMP._script );
 607
 608         X_TEMP._script.onreadystatechange = function(){
 609                 var s = X_TEMP._script;
 610                 if( s && s.readyState === 'complete' ){
 611                         s.onreadystatechange = X_emptyFunction;
 612                         s.onreadystatechange = null;
 613                         s.removeNode( true );
 614                         delete X_TEMP._script;
 615                         X_TEMP.onDomContentLoaded && X_TEMP.onDomContentLoaded();
 616                 };
 617         };
 618 };
 619 // Re: onLoad doesn't work with Safari?
 620 // http://lists.apple.com/archives/web-dev/2003/Oct/msg00036.html
 621 if( X_UA[ 'WebKit' ] || X_UA[ 'Safari' ]  < 3 ){ // sniff
 622         X_Timer_add( 16, function(){
 623                 if( !X_TEMP.onDomContentLoaded ) return X_CALLBACK_UN_LISTEN;
 624                 if( document.readyState === 'loaded' || document.readyState === 'complete' ) return X_TEMP.onDomContentLoaded();
 625         });
 626 };
 627
 628 /* for other browsers */
 629 X_ViewPort[ 'listenOnce' ]( 'load', X_TEMP.onDomContentLoaded );