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

   1
   2 var X_ViewPort_readyState,
   3         X_ViewPort_active = ( window.parent === window ) || !window.parent, // parent は frameに読み込まれた場合のieのerror回避
   4         X_ViewPort_activeTimerID,
   5         X_ViewPort_rootElement,
   6         X_ViewPort_lock,
   7         X_ViewPort_width,
   8         X_ViewPort_height,
   9         X_ViewPort_scrollX = 0,
  10         X_ViewPort_scrollY = 0,
  11         X_ViewPort_baseFontSize,
  12         X_ViewPort_vScrollbarSize,
  13         X_ViewPort_hScrollbarSize,
  14
  15         X_ViewPort_useDetectionLoop = X_UA[ 'IE' ] < 9 || X_UA[ 'iOS' ],
  16         X_ViewPort_detectFontSize = !X_ViewPort_useDetectionLoop && function(){
  17                         var size = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
  18                         if( X_ViewPort_baseFontSize !== size ){
  19                                 X_ViewPort_baseFontSize = size;
  20                                 X_ViewPort_baseFontSize && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_BASE_FONT_RESIZED );
  21                         };
  22         },
  23
  24         X_ViewPort_orientationFlag,
  25         X_ViewPort_orientationchange = window[ 'orientation' ] !== undefined && function( e ){
  26                 X_ViewPort_orientationFlag = true;
  27                 !X_UA[ 'Android' ] && X_ViewPort_resize();
  28                 //console.log( '-- orientationchange : ' + X[ 'ViewPort' ][ 'getSize' ][ 0 ] + ' ' + X[ 'ViewPort' ][ 'getSize' ][ 1 ] );
  29         },
  30
  31         X_ViewPort_document = X_EventDispatcher( document ),
  32
  33 X_ViewPort = X_Class_override(
  34         X_EventDispatcher( window ),
  35         {
  36
  37                 'handleEvent' : function( e ){
  38                         var href, i, name, active = false, xnode;
  39
  40                         switch( e.type ){
  41                                 case 'beforeunload' :
  42                                         // ie では　a href='javascript' な要素でも beforeunload が起こる
  43                                         href = e.target && e.target[ 'attr' ] && e.target[ 'attr' ]( 'href' );
  44                                         if( href && href.indexOf && href.indexOf( 'javascript:' ) === 0 ) return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
  45
  46                                         return X_ViewPort[ 'dispatch' ]( X_EVENT_BEFORE_UNLOAD );
  47
  48                                 case 'unload' :
  49                                         //https://developer.mozilla.org/ja/docs/Web/JavaScript/A_re-introduction_to_JavaScript
  50                                         //Firefox 1.5 の bfcache が無効になりますので、他に理由がない限り Firefox では unload リスナを登録するべきではないことに注意してください。
  51                                         X_ViewPort[ 'dispatch' ]( X_EVENT_UNLOAD );
  52                                 //alert('unload');
  53                                         X_ViewPort_document[ 'kill' ]();
  54                                         this[ 'kill' ]();
  55
  56                                         //X_System[ 'dispatch' ]( X_EVENT_SHUT_DOWN );
  57                                         break;
  58
  59                                 case 'visibilitychange' :
  60                                         console.log( e.type + ':' + document[ 'hidden' ] );
  61                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'hidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  62                                         break;
  63                                 case 'msvisibilitychange' :
  64                                         console.log( e.type + ':' + document[ 'msHidden' ] );
  65                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'msHidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  66                                         break;
  67                                 case 'mozvisibilitychange' :
  68                                         console.log( e.type + ':' + document[ 'mozHidden' ] );
  69                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'mozHidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  70                                         break;
  71                                 case 'webkitvisibilitychange' :
  72                                         console.log( e.type + ':' + document[ 'webkitHidden' ] );
  73                                         X_ViewPort[ 'dispatch' ]( ( X_ViewPort_active = !document[ 'webkitHidden' ] ) ? X_EVENT_VIEW_ACTIVATE : X_EVENT_VIEW_DEACTIVATE );
  74                                         break;
  75
  76                                 case 'blur' :
  77                                 case 'focusout' :
  78                                         if( 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 /**
 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 = document.body.parentNode)) && typeof t.ScrollLeft == 'number' ? t : document.body).ScrollLeft;
 260 //(((t = document.documentElement) || (t = document.body.parentNode)) && typeof t.ScrollTop == 'number' ? t : document.body).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
 272                 X_Node_updateTimerID && X_Node_startUpdate();
 273                 /*X_UA[ 'Opera' ] ?
 274                         ( document.documentElement && document.documentElement.clientWidth ?
 275                                 new Function( 'return[document.documentElement.clientWidth,document.documentElement.clientHeight]' ) :
 276                                 new Function( 'return[document.body.clientWidth,document.body.clientHeight]' )
 277                         ) :*/
 278                 return [
 279                         X_ViewPort_rootElement.scrollWidth  || X_ViewPort_rootElement.offsetWidth,
 280                         X_ViewPort_rootElement.scrollHeight || X_ViewPort_rootElement.offsetHeight
 281                 ];
 282         },
 283
 284         /**
 285          *
 286          * @alias X.ViewPort.getScrollPosition
 287          */
 288         'getScrollPosition' :
 289                 window.pageXOffset !== undefined ?
 290                         ( function(){
 291                                 X_Node_updateTimerID && X_Node_startUpdate();
 292                                 return[ X_ViewPort_scrollX = window.pageXOffset, X_ViewPort_scrollY = window.pageYOffset ];
 293                         } ) :
 294                 window.scrollLeft  !== undefined ?
 295                         ( function(){
 296                                 X_Node_updateTimerID && X_Node_startUpdate();
 297                                 return[ X_ViewPort_scrollX = window.scrollLeft, X_ViewPort_scrollY = window.scrollTop ];
 298                         } ) :
 299                         ( function(){
 300                                 X_Node_updateTimerID && X_Node_startUpdate();
 301                                 // body は Safari2-
 302                                 return[ X_ViewPort_scrollX = X_ViewPort_rootElement.scrollLeft || document.body.scrollLeft, X_ViewPort_scrollY = X_ViewPort_rootElement.scrollTop || document.body.scrollTop ];
 303                         } ),
 304
 305         /**
 306          *
 307          * @alias X.ViewPort.getScrollbarSize
 308          */
 309         'getScrollbarSize' : function(){
 310                 return [ X_ViewPort_vScrollbarSize, X_ViewPort_hScrollbarSize ];
 311         },
 312
 313         /**
 314          *
 315          * @alias X.ViewPort.getBaseFontSize
 316          */
 317         'getBaseFontSize' : function(){
 318                 if( X_Node_updateTimerID ){
 319                         X_Node_startUpdate();
 320                         return X_ViewPort_baseFontSize = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 321                 };
 322                 return X_ViewPort_baseFontSize;
 323         },
 324
 325         /**
 326          * キーボードイベントを受け付ける
 327          * @alias X.ViewPort.isActive
 328          */
 329         'isActive' : function(){
 330                 return X_ViewPort_active;
 331         },
 332
 333         /**
 334          * 可視である。iframe 内のhtmlも
 335          * @alias X.ViewPort.isVisible
 336          */
 337         'isVisible' : function(){
 338                 return X_ViewPort_active;
 339         }
 340
 341 };
 342
 343
 344
 345 /* -----------------------------------------------
 346  * Resize
 347  *  original : uupaa.js
 348  *
 349  * TODO
 350  *  https://w3g.jp/blog/studies/ios7_1_minimal-ui_warning
 351  *  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
 352  *
 353  * http://looxu.blogspot.jp/2013/11/ios7mobile-safariwindowinnerheight.html
 354  * iOS7にて、Mobile Safariのwindow.innerHeightを正しく取得する方法
 355  *
 356  *  http://tenderfeel.xsrv.jp/javascript/1182/
 357  *  アドレスバーの高さの算出
 358  *
 359  * http://sssslide.com/www.slideshare.net/hiroakiwakamatsu/javascript-14514208
 360  * 1. 傾き時の画面サイズ取得ー 対処方法の例
 361  * (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
 362  * window.onorientationchange = function() { setTimeout(function() { alert('W: ' + window.innerWidth + ', H: ' + window.innerHeight); }, 200); }
 363  * 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
 364  *
 365  * http://sssslide.com/www.slideshare.net/hiroakiwakamatsu/ss-12718639
 366  *
 367  *
 368  * getBoundingClientRect で　fontsize の調査
 369  */
 370                 var X_ViewPort_resize =
 371                         // iOS もループで回す,,,iOS3.1.3, iOS6 で確認
 372                         X_ViewPort_useDetectionLoop ?
 373                                 (function(){
 374                                         var size;
 375                                         if( !X_ViewPort_lock ){
 376                                                 size = X_ViewPort_getWindowSize();
 377                                                 if( X_ViewPort_width !== size[ 0 ] || X_ViewPort_height !== size[ 1 ] ){
 378                                                         X_ViewPort_width = size[ 0 ];
 379                                                         X_ViewPort_height = size[ 1 ];
 380                                                         X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 381                                                         X_ViewPort_lock = true;
 382                                                 };
 383                                         };
 384
 385                                         size = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 386                                         if( X_ViewPort_baseFontSize !== size ){
 387                                                 X_ViewPort_baseFontSize && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_BASE_FONT_RESIZED );
 388                                                 X_ViewPort_baseFontSize = size;
 389                                         };
 390
 391                                 }) :
 392                                 (function( e ){
 393                                         console.log( '-- resize : ' + X_Timer_now() );
 394
 395                                         !X_ViewPort_lock && ( X_ViewPort_lock = true ) && X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 396                                         return X_CALLBACK_PREVENT_DEFAULT | X_CALLBACK_STOP_PROPAGATION;
 397                                 });
 398
 399                 function X_ViewPort_detectFinishResizing(){
 400                         var size = X_ViewPort_getWindowSize();
 401                         if( X_ViewPort_width !== size[ 0 ] || X_ViewPort_height !== size[ 1 ] ){
 402                                 X_ViewPort_width  = size[ 0 ];
 403                                 X_ViewPort_height = size[ 1 ];
 404                                 X_Timer_once( 100, X_ViewPort_detectFinishResizing );
 405                         } else {
 406                                 console.log( '-- detectFinishResizing : ' + X_Timer_now() );
 407
 408                                 X_ViewPort[ 'asyncDispatch' ]( X_EVENT_VIEW_RESIZED );
 409                                 X_ViewPort_lock = false;
 410                                 if( X_ViewPort_orientationFlag ){
 411                                         X_ViewPort_orientationFlag = false;
 412                                         X_ViewPort[ 'asyncDispatch' ]( 100, { type : X_EVENT_VIEW_TURNED, 'orientation' : window.orientation } );
 413                                 };
 414                         };
 415                 };
 416
 417                 X_TEMP.onDomContentLoaded = function(){
 418                         var s, size, elmHtml, elmHead, elmBody, html, head, body;
 419
 420                         console.log( '> X_TEMP.onDomContentLoaded rs:' + X_ViewPort_readyState );
 421
 422                         if( X_EVENT_PRE_INIT <= X_ViewPort_readyState ) return X_CALLBACK_UN_LISTEN;
 423                         X_ViewPort_readyState = X_EVENT_PRE_INIT;
 424
 425                         // 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
 426                         X_TEMP.onDomContentLoaded && X_ViewPort_document[ 'unlisten' ]( 'DOMContentLoaded', X_TEMP.onDomContentLoaded );
 427                         delete X_TEMP.onDomContentLoaded;
 428
 429                         elmHtml = document.documentElement ||
 430                                 X_UA_DOM.W3C ? document.getElementsByTagName( 'html' )[ 0 ] :
 431                                 X_UA_DOM.IE4 ? document.all.tags( 'html' )[ 0 ] : null;
 432
 433                         elmHead =
 434                                 X_UA_DOM.W3C ? document.getElementsByTagName( 'head' )[ 0 ] :
 435                                 X_UA_DOM.IE4 ? document.all.tags( 'head' )[ 0 ] : null;
 436
 437                         elmBody = document.body;
 438
 439                         X_ViewPort_rootElement = document.compatMode !== 'CSS1Compat' ? elmBody : elmHtml || elmBody;
 440
 441         /**
 442          * Node( documentElement )
 443          * @alias X.Doc.html
 444          * @type {Node}
 445          */
 446                         X[ 'Doc' ][ 'html' ] = html = X_Node_html = elmHtml && Node( elmHtml )[ 'removeClass' ]( 'js-disabled' )[ 'addClass' ]( X_UA_classNameForHTML );
 447                         html[ '_flags' ] |= X_NodeFlags_IN_TREE;
 448
 449         /**
 450          * Node( head )
 451          * @alias X.Doc.head
 452          * @type {Node}
 453          */
 454                         X[ 'Doc' ][ 'head' ] = head = X_Node_head = elmHead && Node( elmHead );
 455
 456         /**
 457          * Node( documentElement )
 458          * @alias X.Doc.body
 459          * @type {Node}
 460          */
 461                         X[ 'Doc' ][ 'body' ] = body = X_Node_body = Node( elmBody );
 462
 463                         body[ 'parent ' ] = head[ 'parent' ] = html;
 464                         html[ '_xnodes' ] = [ head, body ];
 465
 466                         html[ 'appendTo' ] = html[ 'prev' ] = html[ 'next' ] = html[ 'clone' ] = html[ 'remove' ] = html[ 'kill' ] =
 467                         html[ 'create' ] = html[ 'createText' ] = html[ 'createAt' ] = html[ 'createTextAt' ] = html[ 'append' ] = html[ 'appendAt' ] = html[ 'empty' ] = html[ 'html' ] = html[ 'text' ] =
 468                         html[ 'css' ] = html[ 'cssText' ] =
 469                         head[ 'appendTo' ] = head[ 'prev' ] = head[ 'next' ] = head[ 'clone' ] = head[ 'remove' ] = head[ 'kill' ] =
 470                         head[ 'createText' ] = head[ 'createTextAt' ] = head[ 'empty' ] = head[ 'html' ] = head[ 'text' ] = head[ 'css' ] = head[ 'cssText' ] =
 471                         body[ 'appendTo' ] = body[ 'prev' ] = body[ 'next' ] = body[ 'clone' ] = body[ 'remove' ] = body[ 'kill' ] = new Function( 'return this' );
 472
 473                         X_ViewPort[ 'listenOnce' ]( X_EVENT_PRE_INIT, function(){
 474                                 X_ViewPort_readyState = X_EVENT_XTREE_READY;
 475                                 if( X_TEMP.X_Dom_useBuilder ) X_TEMP.X_Dom_useBuilder = !!document.body.children.length;
 476                                 !X_TEMP.X_Dom_useBuilder && X_ViewPort[ 'asyncDispatch' ]( X_EVENT_XTREE_READY );
 477                         } );
 478
 479                         X_ViewPort[ 'listenOnce' ]( X_EVENT_XTREE_READY, function(){
 480                                 X_ViewPort_readyState = X_EVENT_INIT;
 481                                 //X_UA[ 'Opera7' ] && alert( 'bc' );
 482                                 X_Node_body[ 'appendAt' ]( 0,
 483                                         X_Node_systemNode = X_Doc_create( 'div', { 'class' : 'hidden-system-node' } ),
 484                                         X_Node_fontSizeNode = X_Doc_create( 'div', { 'class' : 'hidden-system-node' } )[ 'cssText' ]( 'line-height:1;height:1em;' )[ 'text' ]( 'X' )
 485                                 );
 486                                 X_Node_startUpdate();
 487
 488                                 X_ViewPort[ 'asyncDispatch' ]( X_EVENT_INIT );
 489                         } );
 490
 491                         X_ViewPort[ 'listenOnce' ]( X_EVENT_INIT, function(){
 492                                 var size = X_ViewPort_getWindowSize(),
 493
 494                                 // http://jsdo.it/imaya/kTYg
 495                                         body = document.body,
 496                                         defaultOverflow = document.body.style.overflow,
 497                                         w, h;
 498
 499                                 X_ViewPort_width  = size[ 0 ];
 500                                 X_ViewPort_height = size[ 1 ];
 501
 502                                 body.style.overflow = 'hidden';
 503                                 w = body.clientWidth;
 504                                 h = body.clientHeight;
 505
 506                                 body.style.overflow = 'scroll';
 507                                 w -= body.clientWidth;
 508                                 h -= body.clientHeight;
 509
 510                                 if( !w ) w = body.offsetWidth  - body.clientWidth;
 511                                 if( !h ) h = body.offsetHeight - body.clientHeight;
 512                                 body.style.overflow = defaultOverflow;
 513
 514                                 X_ViewPort_vScrollbarSize = w;
 515                                 X_ViewPort_hScrollbarSize = h;
 516                                 if( h <= 0 ){ // ie6, ie11, firefox で　負の値が返る
 517                                         console.log( 'invalid hScrollbarSize: ' + h );
 518                                         X_ViewPort_hScrollbarSize = w;
 519                                 };
 520
 521                                 //
 522                                 if( X_ViewPort_orientationchange ){
 523                                         X_EventDispatcher_systemListen( X_ViewPort, 'orientationchange', X_ViewPort_orientationchange );
 524                                 };
 525
 526                                 if( X_ViewPort_detectFontSize ){
 527                                         X_EventDispatcher_systemListen( X_ViewPort, 'resize', X_ViewPort_resize );
 528                                         X_Timer_add( 333, X_ViewPort_detectFontSize );
 529                                 } else {
 530                                         X_Timer_add( 333, X_ViewPort_resize );
 531                                 };
 532
 533                                 X_ViewPort_baseFontSize = X_Node_fontSizeNode[ '_rawObject' ].offsetHeight;
 534
 535                                 X_ViewPort[ 'asyncDispatch' ]( X_ViewPort_readyState = X_EVENT_XDOM_READY );
 536                         } );
 537
 538                         X_ViewPort[ 'asyncDispatch' ]( X_EVENT_PRE_INIT );
 539
 540
 541                         X_EventDispatcher_systemListen( X_ViewPort, [ 'beforeunload', 'unload' ] );
 542
 543 //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
 544 //http://d.hatena.ne.jp/koumiya/20080916/1221580149
 545
 546 console.log( '------------------->' );
 547
 548                         if( document[ 'webkitHidden' ] !== undefined ){
 549                                 console.log( '--> has webkitvisibilitychange' );
 550                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'webkitvisibilitychange', X_ViewPort );
 551                         } else
 552                         if( document[ 'hidden' ] !== undefined ){// iOS 7+
 553                                 console.log( '--> has visibilitychange' );
 554                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'visibilitychange', X_ViewPort );
 555                                 document.onvisibilitychange = function(){ console.log( '!!!!!!!!!!!!!!!!' ) };
 556                         } else
 557                         if( document[ 'msHidden' ] !== undefined ){
 558                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'msvisibilitychange', X_ViewPort );
 559                         } else
 560                         if( document[ 'mozHidden' ] !== undefined ){
 561                                 X_EventDispatcher_systemListen( X_ViewPort_document, 'mozvisibilitychange', X_ViewPort );
 562                         };
 563
 564                         if( window[ 'onpageshow' ] !== undefined ){
 565                                 console.log( '-------------------> pageshow, pagehide' );
 566                                 X_EventDispatcher_systemListen( X_ViewPort, [ 'pageshow', 'pagehide' ] );
 567                         };
 568
 569                         if( document[ 'onfocusin' ] !== undefined ){
 570                                 console.log( '-------------------> focusin, focusout' );
 571                                 // https://github.com/ai/visibilityjs/blob/master/lib/visibility.fallback.js
 572                                 X_EventDispatcher_systemListen( X_ViewPort_document, [ 'focusin', 'focusout' ], X_ViewPort );
 573                         };
 574
 575                         X_EventDispatcher_systemListen( X_ViewPort, [ 'focus', 'blur' ] );
 576
 577                         return X_CALLBACK_UN_LISTEN;
 578                 };
 579
 580                 function X_ViewPort_getWindowSize(){
 581                         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！
 582                                 [ X_ViewPort_rootElement.clientWidth, X_ViewPort_rootElement.clientHeight ] :
 583                                 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！
 584                                 [ X_ViewPort_rootElement.offsetWidth, X_ViewPort_rootElement.offsetHeight ] :
 585                                 [ window.innerWidth, window.innerHeight ];
 586                 };
 587
 588
 589 console.log( 'X.Dom dom:w3c=' + X_UA_DOM.W3C + ' ev:w3c=' + X_UA_EVENT.W3C );
 590
 591 /* -----------------------------------------------
 592  * Document Ready
 593  *  Dean Edwards/Matthias Miller/John Resig
 594  */
 595
 596 // SafariでJavaScriptのデバッグをする方法
 597 // safari1.3 可
 598 // http://shimax.cocolog-nifty.com/search/2006/09/safarijavascrip_c54d.html
 599
 600 /* for ie9+/Mozilla/Opera9 */
 601 if( X_UA_EVENT.W3C ){
 602         X_ViewPort_document[ 'listenOnce' ]( 'DOMContentLoaded', X_TEMP.onDomContentLoaded );
 603 } else
 604 if( 6 <= X_UA[ 'IE' ] && X[ 'inHead' ] && !X_UA[ 'ieExeComError' ] ){ // standalone の除外 ->  && !X_UA[ 'ieExeComError' ]
 605         // if this script in Head
 606         //document.write( '<script id=__ieonload defer src=javascript:void(0)></script>' );
 607         //X_TEMP._script = document.getElementById( '__ieonload' );
 608
 609         // 上のコードはスタンドアローン版ie6でエラー
 610     X_TEMP._script = document.createElement( '<script id=__ieonload defer src=javascript:void(0)></script>' ) ;
 611     document.getElementsByTagName( 'head' )[ 0 ].appendChild( X_TEMP._script );
 612
 613         X_TEMP._script.onreadystatechange = function(){
 614                 var s = X_TEMP._script;
 615                 if( s && s.readyState === 'complete' ){
 616                         s.onreadystatechange = X_emptyFunction;
 617                         s.onreadystatechange = null;
 618                         s.removeNode( true );
 619                         delete X_TEMP._script;
 620                         X_TEMP.onDomContentLoaded && X_TEMP.onDomContentLoaded();
 621                 };
 622         };
 623 };
 624 // Re: onLoad doesn't work with Safari?
 625 // http://lists.apple.com/archives/web-dev/2003/Oct/msg00036.html
 626 if( X_UA[ 'WebKit' ] || X_UA[ 'Safari' ]  < 3 ){ // sniff
 627         X_Timer_add( 16, function(){
 628                 if( !X_TEMP.onDomContentLoaded ) return X_CALLBACK_UN_LISTEN;
 629                 if( document.readyState === 'loaded' || document.readyState === 'complete' ) return X_TEMP.onDomContentLoaded();
 630         });
 631 };
 632
 633 /* for other browsers */
 634 X_ViewPort[ 'listenOnce' ]( 'load', X_TEMP.onDomContentLoaded );