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

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