src/js/jquery.mobile.tizen.scrollview.js

   1 //>>excludeStart("jqmBuildExclude", pragmas.jqmBuildExclude);
   2 //>>description: Implements scroll by javascript
   3 //>>label: Scrollview
   4 //>>group: Tizen:Core
   5
   6 define( [ ], function ( ) {
   7 //>>excludeEnd("jqmBuildExclude");
   8
   9 /*
  10 * jQuery Mobile Framework : scrollview plugin
  11 * Copyright (c) 2010 Adobe Systems Incorporated - Kin Blas (jblas@adobe.com)
  12 * Dual licensed under the MIT (MIT-LICENSE.txt) and GPL (GPL-LICENSE.txt) licenses.
  13 * Note: Code is in draft form and is subject to change
  14 * Modified by Koeun Choi <koeun.choi@samsung.com>
  15 * Modified by Minkyu Kang <mk7.kang@samsung.com>
  16 */
  17
  18 (function ( $, window, document, undefined ) {
  19
  20         function resizePageContentHeight( page ) {
  21                 var $page = $( page ),
  22                         $content = $page.children(".ui-content"),
  23                         hh = $page.children(".ui-header").outerHeight() || 0,
  24                         fh = $page.children(".ui-footer").outerHeight() || 0,
  25                         pt = parseFloat( $content.css("padding-top") ),
  26                         pb = parseFloat( $content.css("padding-bottom") ),
  27                         wh = $( window ).height();
  28
  29                 $content.height( wh - (hh + fh) - (pt + pb) );
  30         }
  31
  32         function MomentumTracker( options ) {
  33                 this.options = $.extend( {}, options );
  34                 this.easing = "easeOutQuad";
  35                 this.reset();
  36         }
  37
  38         var tstates = {
  39                 scrolling: 0,
  40                 overshot:  1,
  41                 snapback:  2,
  42                 done:      3
  43         };
  44
  45         function getCurrentTime() {
  46                 return Date.now();
  47         }
  48
  49         jQuery.widget( "tizen.scrollview", jQuery.mobile.widget, {
  50                 options: {
  51                         direction:         null,  // "x", "y", or null for both.
  52
  53                         timerInterval:     10,
  54                         scrollDuration:    1000,  // Duration of the scrolling animation in msecs.
  55                         overshootDuration: 250,   // Duration of the overshoot animation in msecs.
  56                         snapbackDuration:  500,   // Duration of the snapback animation in msecs.
  57
  58                         moveThreshold:     30,   // User must move this many pixels in any direction to trigger a scroll.
  59                         moveIntervalThreshold:     150,   // Time between mousemoves must not exceed this threshold.
  60
  61                         scrollMethod:      "translate",  // "translate", "position"
  62                         startEventName:    "scrollstart",
  63                         updateEventName:   "scrollupdate",
  64                         stopEventName:     "scrollstop",
  65
  66                         eventType:         $.support.touch ? "touch" : "mouse",
  67
  68                         showScrollBars:    true,
  69                         overshootEnable:   false,
  70                         outerScrollEnable: true,
  71                         overflowEnable:    true,
  72                         scrollJump:        false,
  73                 },
  74
  75                 _getViewHeight: function () {
  76                         return this._$view.height();
  77                 },
  78
  79                 _getViewWidth: function () {
  80                         return this._$view.width();
  81                 },
  82
  83                 _makePositioned: function ( $ele ) {
  84                         if ( $ele.css("position") === "static" ) {
  85                                 $ele.css( "position", "relative" );
  86                         }
  87                 },
  88
  89                 _create: function () {
  90                         var direction,
  91                                 self = this;
  92
  93                         this._$clip = $( this.element ).addClass("ui-scrollview-clip");
  94
  95                         if ( this._$clip.children(".ui-scrollview-view").length ) {
  96                                 this._$view = this._$clip.children(".ui-scrollview-view");
  97                         } else {
  98                                 this._$view = this._$clip.wrapInner("<div></div>").children()
  99                                                         .addClass("ui-scrollview-view");
 100                         }
 101
 102                         if ( this.options.scrollMethod === "translate" ) {
 103                                 if ( this._$view.css("transform") === undefined ) {
 104                                         this.options.scrollMethod = "position";
 105                                 }
 106                         }
 107
 108                         this._$clip.css( "overflow", "hidden" );
 109                         this._makePositioned( this._$clip );
 110
 111                         this._makePositioned( this._$view );
 112                         this._$view.css( { left: 0, top: 0 } );
 113
 114                         this._view_height = this._getViewHeight();
 115
 116                         this._sx = 0;
 117                         this._sy = 0;
 118
 119                         direction = this.options.direction;
 120
 121                         this._hTracker = ( direction !== "y" ) ?
 122                                         new MomentumTracker( this.options ) : null;
 123                         this._vTracker = ( direction !== "x" ) ?
 124                                         new MomentumTracker( this.options ) : null;
 125
 126                         this._timerInterval = this.options.timerInterval;
 127                         this._timerID = 0;
 128
 129                         this._timerCB = function () {
 130                                 self._handleMomentumScroll();
 131                         };
 132
 133                         this._add_event();
 134                         this._add_scrollbar();
 135                         this._add_scroll_jump();
 136                         this._add_overflow_indicator();
 137                 },
 138
 139                 _startMScroll: function ( speedX, speedY ) {
 140                         var keepGoing = false,
 141                                 duration = this.options.scrollDuration,
 142                                 ht = this._hTracker,
 143                                 vt = this._vTracker,
 144                                 c,
 145                                 v;
 146
 147                         this._$clip.trigger( this.options.startEventName );
 148
 149                         if ( ht ) {
 150                                 c = this._$clip.width();
 151                                 v = this._getViewWidth();
 152
 153                                 if ( (( this._sx === 0 && speedX > 0 ) ||
 154                                         ( this._sx === -(v - c) && speedX < 0 )) &&
 155                                                 v > c ) {
 156                                         return;
 157                                 }
 158
 159                                 ht.start( this._sx, speedX,
 160                                         duration, (v > c) ? -(v - c) : 0, 0 );
 161                                 keepGoing = !ht.done();
 162                         }
 163
 164                         if ( vt ) {
 165                                 c = this._$clip.height();
 166                                 v = this._getViewHeight();
 167
 168                                 if ( (( this._sy === 0 && speedY > 0 ) ||
 169                                         ( this._sy === -(v - c) && speedY < 0 )) &&
 170                                                 v > c ) {
 171                                         return;
 172                                 }
 173
 174                                 vt.start( this._sy, speedY,
 175                                         duration, (v > c) ? -(v - c) : 0, 0 );
 176                                 keepGoing = keepGoing || !vt.done();
 177                         }
 178
 179                         if ( keepGoing ) {
 180                                 this._timerID = setTimeout( this._timerCB, this._timerInterval );
 181                         } else {
 182                                 this._stopMScroll();
 183                         }
 184                 },
 185
 186                 _stopMScroll: function () {
 187                         if ( this._timerID ) {
 188                                 this._$clip.trigger( this.options.stopEventName );
 189                                 clearTimeout( this._timerID );
 190                         }
 191                         this._timerID = 0;
 192
 193                         if ( this._vTracker ) {
 194                                 this._vTracker.reset();
 195                         }
 196
 197                         if ( this._hTracker ) {
 198                                 this._hTracker.reset();
 199                         }
 200
 201                         this._hideScrollBars();
 202                         this._hideOverflowIndicator();
 203                 },
 204
 205                 _handleMomentumScroll: function () {
 206                         var keepGoing = false,
 207                                 x = 0,
 208                                 y = 0,
 209                                 scroll_height = 0,
 210                                 self = this,
 211                                 end_effect = function ( dir ) {
 212                                         setTimeout( function () {
 213                                                 self._effect_dir = dir;
 214                                                 self._setEndEffect( "in" );
 215                                         }, 100 );
 216
 217                                         setTimeout( function () {
 218                                                 self._setEndEffect( "out" );
 219                                         }, 350 );
 220                                 },
 221                                 vt = this._vTracker,
 222                                 ht = this._hTracker;
 223
 224                         if ( this._outerScrolling ) {
 225                                 return;
 226                         }
 227
 228                         if ( vt ) {
 229                                 vt.update( this.options.overshootEnable );
 230                                 y = vt.getPosition();
 231                                 keepGoing = !vt.done();
 232
 233                                 if ( vt.getRemained() > this.options.overshootDuration ) {
 234                                         scroll_height = this._getViewHeight() - this._$clip.height();
 235
 236                                         if ( !vt.isAvail() ) {
 237                                                 if ( this._speedY > 0 ) {
 238                                                         this._outerScroll( vt.getRemained() / 3, scroll_height );
 239                                                 } else {
 240                                                         this._outerScroll( y - vt.getRemained() / 3, scroll_height );
 241                                                 }
 242                                         } else if ( vt.isMin() ) {
 243                                                 this._outerScroll( y - vt.getRemained() / 3, scroll_height );
 244
 245                                                 if ( scroll_height > 0 ) {
 246                                                         end_effect( 1 );
 247                                                 }
 248                                         } else if ( vt.isMax() ) {
 249                                                 this._outerScroll( vt.getRemained() / 3, scroll_height );
 250
 251                                                 if ( scroll_height > 0 ) {
 252                                                         end_effect( 0 );
 253                                                 }
 254                                         }
 255                                 }
 256                         }
 257
 258                         if ( ht ) {
 259                                 ht.update( this.options.overshootEnable );
 260                                 x = ht.getPosition();
 261                                 keepGoing = keepGoing || !ht.done();
 262                         }
 263
 264                         this._setScrollPosition( x, y );
 265                         this._$clip.trigger( this.options.updateEventName,
 266                                         [ { x: x, y: y } ] );
 267
 268                         if ( keepGoing ) {
 269                                 this._timerID = setTimeout( this._timerCB, this._timerInterval );
 270                         } else {
 271                                 this._stopMScroll();
 272                         }
 273                 },
 274
 275                 _setElementTransform: function ( $ele, x, y, duration ) {
 276                         var translate,
 277                                 transition;
 278
 279                         if ( !duration || duration === undefined ) {
 280                                 transition = "none";
 281                         } else {
 282                                 transition =  "-webkit-transform " + duration / 1000 + "s ease-out";
 283                         }
 284
 285                         if ( $.support.cssTransform3d ) {
 286                                 translate = "translate3d(" + x + "," + y + ", 0px)";
 287                         } else {
 288                                 translate = "translate(" + x + "," + y + ")";
 289                         }
 290
 291                         $ele.css({
 292                                 "-moz-transform": translate,
 293                                 "-webkit-transform": translate,
 294                                 "-ms-transform": translate,
 295                                 "-o-transform": translate,
 296                                 "transform": translate,
 297                                 "-webkit-transition": transition
 298                         });
 299                 },
 300
 301                 _setEndEffect: function ( dir ) {
 302                         var scroll_height = this._getViewHeight() - this._$clip.height();
 303
 304                         if ( this._softkeyboard ) {
 305                                 if ( this._effect_dir ) {
 306                                         this._outerScroll( -scroll_height - this._softkeyboardHeight,
 307                                                         scroll_height );
 308                                 } else {
 309                                         this._outerScroll( this._softkeyboardHeight, scroll_height );
 310                                 }
 311                                 return;
 312                         }
 313
 314                         if ( dir === "in" ) {
 315                                 if ( this._endEffect ) {
 316                                         return;
 317                                 }
 318
 319                                 this._endEffect = true;
 320                                 this._setOverflowIndicator( this._effect_dir );
 321                                 this._showOverflowIndicator();
 322                         } else if ( dir === "out" ) {
 323                                 if ( !this._endEffect ) {
 324                                         return;
 325                                 }
 326
 327                                 this._endEffect = false;
 328                         } else {
 329                                 this._endEffect = false;
 330                                 this._setOverflowIndicator();
 331                                 this._showOverflowIndicator();
 332                         }
 333                 },
 334
 335                 _setCalibration: function ( x, y ) {
 336                         if ( this.options.overshootEnable ) {
 337                                 this._sx = x;
 338                                 this._sy = y;
 339                                 return;
 340                         }
 341
 342                         var $v = this._$view,
 343                                 $c = this._$clip,
 344                                 dirLock = this._directionLock,
 345                                 scroll_height = 0,
 346                                 scroll_width = 0;
 347
 348                         if ( dirLock !== "y" && this._hTracker ) {
 349                                 scroll_width = $v.width() - $c.width();
 350
 351                                 if ( x >= 0 ) {
 352                                         this._sx = 0;
 353                                 } else if ( x < -scroll_width ) {
 354                                         this._sx = -scroll_width;
 355                                 } else {
 356                                         this._sx = x;
 357                                 }
 358
 359                                 if ( scroll_width < 0 ) {
 360                                         this._sx = 0;
 361                                 }
 362                         }
 363
 364                         if ( dirLock !== "x" && this._vTracker ) {
 365                                 scroll_height = this._getViewHeight() - $c.height();
 366
 367                                 if ( y > 0 ) {
 368                                         this._sy = 0;
 369
 370                                         if ( this._didDrag && scroll_height > 0 ) {
 371                                                 this._effect_dir = 0;
 372                                                 this._setEndEffect( "in" );
 373                                         }
 374                                 } else if ( y < -scroll_height ) {
 375                                         this._sy = -scroll_height;
 376
 377                                         if ( this._didDrag && scroll_height > 0 ) {
 378                                                 this._effect_dir = 1;
 379                                                 this._setEndEffect( "in" );
 380                                         }
 381                                 } else {
 382                                         if ( this._endEffect && this._sy !== y ) {
 383                                                 this._setEndEffect();
 384                                         }
 385
 386                                         this._sy = y;
 387                                 }
 388
 389                                 if ( scroll_height < 0 ) {
 390                                         this._sy = 0;
 391                                 }
 392                         }
 393                 },
 394
 395                 _setScrollPosition: function ( x, y, duration ) {
 396                         var $v = this._$view,
 397                                 sm = this.options.scrollMethod,
 398                                 $vsb = this._$vScrollBar,
 399                                 $hsb = this._$hScrollBar,
 400                                 $sbt;
 401
 402                         this._setCalibration( x, y );
 403
 404                         x = this._sx;
 405                         y = this._sy;
 406
 407                         if ( sm === "translate" ) {
 408                                 this._setElementTransform( $v, x + "px", y + "px", duration );
 409                         } else {
 410                                 $v.css( {left: x + "px", top: y + "px"} );
 411                         }
 412
 413                         if ( $vsb ) {
 414                                 $sbt = $vsb.find(".ui-scrollbar-thumb");
 415
 416                                 if ( sm === "translate" ) {
 417                                         this._setElementTransform( $sbt, "0px",
 418                                                 -y / this._getViewHeight() * $sbt.parent().height() + "px",
 419                                                 duration );
 420                                 } else {
 421                                         $sbt.css( "top", -y / this._getViewHeight() * 100 + "%" );
 422                                 }
 423                         }
 424
 425                         if ( $hsb ) {
 426                                 $sbt = $hsb.find(".ui-scrollbar-thumb");
 427
 428                                 if ( sm === "translate" ) {
 429                                         this._setElementTransform( $sbt,
 430                                                 -x / $v.width() * $sbt.parent().width() + "px", "0px",
 431                                                 duration);
 432                                 } else {
 433                                         $sbt.css("left", -x / $v.width() * 100 + "%");
 434                                 }
 435                         }
 436                 },
 437
 438                 _outerScroll: function ( y, scroll_height ) {
 439                         var self = this,
 440                                 top = $( window ).scrollTop() - window.screenTop,
 441                                 sy = 0,
 442                                 duration = this.options.snapbackDuration,
 443                                 start = getCurrentTime(),
 444                                 tfunc;
 445
 446                         if ( !this.options.outerScrollEnable ) {
 447                                 return;
 448                         }
 449
 450                         if ( this._$clip.jqmData("scroll") !== "y" ) {
 451                                 return;
 452                         }
 453
 454                         if ( this._outerScrolling ) {
 455                                 return;
 456                         }
 457
 458                         if ( y > 0 ) {
 459                                 sy = ( window.screenTop ? window.screenTop : -y );
 460                         } else if ( y < -scroll_height ) {
 461                                 sy = -y - scroll_height;
 462                         } else {
 463                                 return;
 464                         }
 465
 466                         tfunc = function () {
 467                                 var elapsed = getCurrentTime() - start;
 468
 469                                 if ( elapsed >= duration ) {
 470                                         window.scrollTo( 0, top + sy );
 471                                         self._outerScrolling = undefined;
 472
 473                                         self._stopMScroll();
 474                                 } else {
 475                                         ec = $.easing.easeOutQuad( elapsed / duration,
 476                                                         elapsed, 0, 1, duration );
 477
 478                                         window.scrollTo( 0, top + ( sy * ec ) );
 479                                         self._outerScrolling = setTimeout( tfunc, self._timerInterval );
 480                                 }
 481                         };
 482                         this._outerScrolling = setTimeout( tfunc, self._timerInterval );
 483                 },
 484
 485                 _scrollTo: function ( x, y, duration ) {
 486                         var self = this,
 487                                 start = getCurrentTime(),
 488                                 efunc = $.easing.easeOutQuad,
 489                                 sx = this._sx,
 490                                 sy = this._sy,
 491                                 dx = x - sx,
 492                                 dy = y - sy,
 493                                 tfunc;
 494
 495                         x = -x;
 496                         y = -y;
 497
 498                         tfunc = function () {
 499                                 var elapsed = getCurrentTime() - start,
 500                                     ec;
 501
 502                                 if ( elapsed >= duration ) {
 503                                         self._timerID = 0;
 504                                         self._setScrollPosition( x, y );
 505                                 } else {
 506                                         ec = efunc( elapsed / duration, elapsed, 0, 1, duration );
 507
 508                                         self._setScrollPosition( sx + ( dx * ec ), sy + ( dy * ec ) );
 509                                         self._timerID = setTimeout( tfunc, self._timerInterval );
 510                                 }
 511                         };
 512
 513                         this._timerID = setTimeout( tfunc, this._timerInterval );
 514                 },
 515
 516                 scrollTo: function ( x, y, duration ) {
 517                         this._stopMScroll();
 518                         this._didDrag = false;
 519
 520                         if ( !duration || this.options.scrollMethod === "translate" ) {
 521                                 this._setScrollPosition( x, y, duration );
 522                         } else {
 523                                 this._scrollTo( x, y, duration );
 524                         }
 525                 },
 526
 527                 getScrollPosition: function () {
 528                         return { x: -this._sx, y: -this._sy };
 529                 },
 530
 531                 skipDragging: function ( value ) {
 532                         this._skip_dragging = value;
 533                 },
 534
 535                 _getScrollHierarchy: function () {
 536                         var svh = [],
 537                                 d;
 538
 539                         this._$clip.parents( ".ui-scrollview-clip").each( function () {
 540                                 d = $( this ).jqmData("scrollview");
 541                                 if ( d ) {
 542                                         svh.unshift( d );
 543                                 }
 544                         } );
 545                         return svh;
 546                 },
 547
 548                 _getAncestorByDirection: function ( dir ) {
 549                         var svh = this._getScrollHierarchy(),
 550                                 n = svh.length,
 551                                 sv,
 552                                 svdir;
 553
 554                         while ( 0 < n-- ) {
 555                                 sv = svh[n];
 556                                 svdir = sv.options.direction;
 557
 558                                 if (!svdir || svdir === dir) {
 559                                         return sv;
 560                                 }
 561                         }
 562                         return null;
 563                 },
 564
 565                 _handleDragStart: function ( e, ex, ey ) {
 566                         this._stopMScroll();
 567
 568                         this._didDrag = false;
 569                         this._skip_dragging = false;
 570
 571                         var target = $( e.target ),
 572                                 self = this,
 573                                 $c = this._$clip,
 574                                 svdir = this.options.direction;
 575
 576                         /* should prevent the default behavior when click the button */
 577                         this._is_button = target.is( '.ui-btn' ) ||
 578                                         target.is( '.ui-btn-text' ) ||
 579                                         target.is( '.ui-btn-inner' ) ||
 580                                         target.is( '.ui-btn-inner .ui-icon' );
 581
 582                         /* should prevent the default behavior when click the slider */
 583                         if ( target.parents('.ui-slider').length || target.is('.ui-slider') ) {
 584                                 this._skip_dragging = true;
 585                                 return;
 586                         }
 587
 588                         if ( target.is('textarea') ) {
 589                                 target.bind( "scroll", function () {
 590                                         self._skip_dragging = true;
 591                                         target.unbind("scroll");
 592                                 });
 593                         }
 594
 595                         /*
 596                          * We need to prevent the default behavior to
 597                          * suppress accidental selection of text, etc.
 598                          */
 599                         this._is_inputbox = target.is(':input') ||
 600                                         target.parents(':input').length > 0;
 601
 602                         if ( this._is_inputbox ) {
 603                                 target.one( "resize.scrollview", function () {
 604                                         if ( ey > $c.height() ) {
 605                                                 self.scrollTo( -ex, self._sy - ey + $c.height(),
 606                                                         self.options.snapbackDuration );
 607                                         }
 608                                 });
 609                         }
 610
 611                         if ( this.options.eventType === "mouse" && !this._is_inputbox && !this._is_button ) {
 612                                 e.preventDefault();
 613                         }
 614
 615                         this._lastX = ex;
 616                         this._lastY = ey;
 617                         this._startY = ey;
 618                         this._doSnapBackX = false;
 619                         this._doSnapBackY = false;
 620                         this._speedX = 0;
 621                         this._speedY = 0;
 622                         this._directionLock = "";
 623
 624                         this._lastMove = 0;
 625                         this._enableTracking();
 626
 627                         this._set_scrollbar_size();
 628                 },
 629
 630                 _propagateDragMove: function ( sv, e, ex, ey, dir ) {
 631                         this._hideScrollBars();
 632                         this._hideOverflowIndicator();
 633                         this._disableTracking();
 634                         sv._handleDragStart( e, ex, ey );
 635                         sv._directionLock = dir;
 636                         sv._didDrag = this._didDrag;
 637                 },
 638
 639                 _handleDragMove: function ( e, ex, ey ) {
 640                         if ( this._skip_dragging ) {
 641                                 return;
 642                         }
 643
 644                         if ( !this._dragging ) {
 645                                 return;
 646                         }
 647
 648                         if ( !this._is_inputbox && !this._is_button ) {
 649                                 e.preventDefault();
 650                         }
 651
 652                         var mt = this.options.moveThreshold,
 653                                 dx = ex - this._lastX,
 654                                 dy = ey - this._lastY,
 655                                 svdir = this.options.direction,
 656                                 dir = null,
 657                                 x,
 658                                 y,
 659                                 sv,
 660                                 scope,
 661                                 newX,
 662                                 newY,
 663                                 dirLock;
 664
 665                         this._lastMove = getCurrentTime();
 666
 667                         if ( !this._directionLock ) {
 668                                 x = Math.abs( dx );
 669                                 y = Math.abs( dy );
 670
 671                                 if ( x < mt && y < mt ) {
 672                                         return false;
 673                                 }
 674
 675                                 if ( x < y && (x / y) < 0.5 ) {
 676                                         dir = "y";
 677                                 } else if ( x > y && (y / x) < 0.5 ) {
 678                                         dir = "x";
 679                                 }
 680
 681                                 if ( svdir && dir && svdir !== dir ) {
 682                                         /*
 683                                          * This scrollview can't handle the direction the user
 684                                          * is attempting to scroll. Find an ancestor scrollview
 685                                          * that can handle the request.
 686                                          */
 687
 688                                         sv = this._getAncestorByDirection( dir );
 689                                         if ( sv ) {
 690                                                 this._propagateDragMove( sv, e, ex, ey, dir );
 691                                                 return false;
 692                                         }
 693                                 }
 694
 695                                 this._directionLock = svdir || (dir || "none");
 696                         }
 697
 698                         newX = this._sx;
 699                         newY = this._sy;
 700                         dirLock = this._directionLock;
 701
 702                         if ( dirLock !== "y" && this._hTracker ) {
 703                                 x = this._sx;
 704                                 this._speedX = dx;
 705                                 newX = x + dx;
 706
 707                                 this._doSnapBackX = false;
 708
 709                                 scope = ( newX > 0 || newX < this._maxX );
 710
 711                                 if ( scope && dirLock === "x" ) {
 712                                         sv = this._getAncestorByDirection("x");
 713                                         if ( sv ) {
 714                                                 this._setScrollPosition( newX > 0 ?
 715                                                                 0 : this._maxX, newY );
 716                                                 this._propagateDragMove( sv, e, ex, ey, dir );
 717                                                 return false;
 718                                         }
 719
 720                                         newX = x + ( dx / 2 );
 721                                         this._doSnapBackX = true;
 722                                 }
 723                         }
 724
 725                         if ( dirLock !== "x" && this._vTracker ) {
 726                                 if ( Math.abs( this._startY - ey ) < mt && dirLock !== "xy" ) {
 727                                         return;
 728                                 }
 729
 730                                 y = this._sy;
 731                                 this._speedY = dy;
 732                                 newY = y + dy;
 733
 734                                 this._doSnapBackY = false;
 735
 736                                 scope = ( newY > 0 || newY < this._maxY );
 737
 738                                 if ( scope && dirLock === "y" ) {
 739                                         sv = this._getAncestorByDirection("y");
 740                                         if ( sv ) {
 741                                                 this._setScrollPosition( newX,
 742                                                                 newY > 0 ? 0 : this._maxY );
 743                                                 this._propagateDragMove( sv, e, ex, ey, dir );
 744                                                 return false;
 745                                         }
 746
 747                                         newY = y + ( dy / 2 );
 748                                         this._doSnapBackY = true;
 749                                 }
 750                         }
 751
 752                         if ( this.options.overshootEnable === false ) {
 753                                 this._doSnapBackX = false;
 754                                 this._doSnapBackY = false;
 755                         }
 756
 757                         this._lastX = ex;
 758                         this._lastY = ey;
 759
 760                         this._setScrollPosition( newX, newY );
 761
 762                         if ( this._didDrag === false ) {
 763                                 this._didDrag = true;
 764                                 this._showScrollBars();
 765                                 this._showOverflowIndicator();
 766
 767                                 this._$clip.parents(".ui-scrollview-clip").each( function () {
 768                                         $( this ).scrollview( "skipDragging", true );
 769                                 } );
 770                         }
 771                 },
 772
 773                 _handleDragStop: function ( e ) {
 774                         var self = this;
 775
 776                         if ( this._skip_dragging ) {
 777                                 return;
 778                         }
 779
 780                         var l = this._lastMove,
 781                                 t = getCurrentTime(),
 782                                 doScroll = (l && (t - l) <= this.options.moveIntervalThreshold),
 783                                 sx = ( this._hTracker && this._speedX && doScroll ) ?
 784                                                 this._speedX : ( this._doSnapBackX ? 1 : 0 ),
 785                                 sy = ( this._vTracker && this._speedY && doScroll ) ?
 786                                                 this._speedY : ( this._doSnapBackY ? 1 : 0 ),
 787                                 svdir = this.options.direction,
 788                                 x,
 789                                 y;
 790
 791                         if ( sx || sy ) {
 792                                 if ( !this._setGestureScroll( sx, sy ) ) {
 793                                         this._startMScroll( sx, sy );
 794                                 }
 795                         } else {
 796                                 this._hideScrollBars();
 797                                 this._hideOverflowIndicator();
 798                         }
 799
 800                         this._disableTracking();
 801
 802                         if ( this._endEffect ) {
 803                                 setTimeout( function () {
 804                                         self._setEndEffect( "out" );
 805                                         self._hideScrollBars();
 806                                         self._hideOverflowIndicator();
 807                                 }, 300 );
 808                         }
 809
 810                         return !this._didDrag;
 811                 },
 812
 813                 _setGestureScroll: function ( sx, sy ) {
 814                         var self = this,
 815                                 reset = function () {
 816                                         clearTimeout( self._gesture_timer );
 817                                         self._gesture_dir = 0;
 818                                         self._gesture_count = 0;
 819                                         self._gesture_timer = undefined;
 820                                 },
 821                                 direction = {
 822                                         top: 0,
 823                                         bottom: 1,
 824                                         left: 2,
 825                                         right: 3
 826                                 };
 827
 828                         if ( !sy && !sx ) {
 829                                 return false;
 830                         }
 831
 832                         if ( Math.abs( sx ) > Math.abs( sy ) ) {
 833                                 dir = sx > 0 ? direction.left : direction.right;
 834                         } else {
 835                                 dir = sy > 0 ? direction.top : direction.bottom;
 836                         }
 837
 838                         if ( !this._gesture_timer ) {
 839                                 this._gesture_count = 1;
 840                                 this._gesture_dir = dir;
 841
 842                                 this._gesture_timer = setTimeout( function () {
 843                                         reset();
 844                                 }, 1000 );
 845
 846                                 return false;
 847                         }
 848
 849                         if ( this._gesture_dir !== dir ) {
 850                                 reset();
 851                                 return false;
 852                         }
 853
 854                         this._gesture_count++;
 855
 856                         if ( this._gesture_count === 3 ) {
 857                                 switch ( dir ) {
 858                                 case direction.top:
 859                                         this.scrollTo( this._sx, 0, this.options.overshootDuration );
 860                                         break;
 861                                 case direction.bottom:
 862                                         this.scrollTo( this._sx, -( this._getViewHeight() - this._$clip.height() ),
 863                                                         this.options.overshootDuration );
 864                                         break;
 865                                 case direction.left:
 866                                         this.scrollTo( 0, this._sy, this.options.overshootDuration );
 867                                         break;
 868                                 case direction.right:
 869                                         this.scrollTo( -( this._getViewWidth() - this._$clip.width() ), this._sy,
 870                                                         this.options.overshootDuration );
 871                                         break;
 872                                 }
 873
 874                                 reset();
 875                                 this._didDrag = true;
 876
 877                                 return true;
 878                         }
 879
 880                         return false;
 881                 },
 882
 883                 _enableTracking: function () {
 884                         this._dragging = true;
 885                 },
 886
 887                 _disableTracking: function () {
 888                         this._dragging = false;
 889                 },
 890
 891                 _showScrollBars: function ( interval ) {
 892                         var vclass = "ui-scrollbar-visible",
 893                                 self = this;
 894
 895                         if ( !this.options.showScrollBars ) {
 896                                 return;
 897                         }
 898                         if ( this._scrollbar_showed ) {
 899                                 return;
 900                         }
 901
 902                         if ( this._$vScrollBar ) {
 903                                 this._$vScrollBar.addClass( vclass );
 904                         }
 905                         if ( this._$hScrollBar ) {
 906                                 this._$hScrollBar.addClass( vclass );
 907                         }
 908
 909                         this._scrollbar_showed = true;
 910
 911                         if ( interval ) {
 912                                 setTimeout( function () {
 913                                         self._hideScrollBars();
 914                                 }, interval );
 915                         }
 916                 },
 917
 918                 _hideScrollBars: function () {
 919                         var vclass = "ui-scrollbar-visible";
 920
 921                         if ( !this.options.showScrollBars ) {
 922                                 return;
 923                         }
 924                         if ( !this._scrollbar_showed ) {
 925                                 return;
 926                         }
 927
 928                         if ( this._$vScrollBar ) {
 929                                 this._$vScrollBar.removeClass( vclass );
 930                         }
 931                         if ( this._$hScrollBar ) {
 932                                 this._$hScrollBar.removeClass( vclass );
 933                         }
 934
 935                         this._scrollbar_showed = false;
 936                 },
 937
 938                 _setOverflowIndicator: function ( dir ) {
 939                         if ( dir === 1 ) {
 940                                 this._opacity_top = "0";
 941                                 this._opacity_bottom = "0.8";
 942                         } else if ( dir === 0 ) {
 943                                 this._opacity_top = "0.8";
 944                                 this._opacity_bottom = "0";
 945                         } else {
 946                                 this._opacity_top = "0.5";
 947                                 this._opacity_bottom = "0.5";
 948                         }
 949                 },
 950
 951                 _showOverflowIndicator: function () {
 952                         if ( !this.options.overflowEnable || !this._overflowAvail || this._softkeyboard ) {
 953                                 return;
 954                         }
 955
 956                         this._overflow_top.animate( { opacity: this._opacity_top }, 300 );
 957                         this._overflow_bottom.animate( { opacity: this._opacity_bottom }, 300 );
 958
 959                         this._overflow_showed = true;
 960                 },
 961
 962                 _hideOverflowIndicator: function () {
 963                         if ( !this.options.overflowEnable || !this._overflowAvail || this._softkeyboard ) {
 964                                 return;
 965                         }
 966
 967                         if ( this._overflow_showed === false ) {
 968                                 return;
 969                         }
 970
 971                         this._overflow_top.animate( { opacity: 0 }, 300 );
 972                         this._overflow_bottom.animate( { opacity: 0 }, 300 );
 973
 974                         this._overflow_showed = false;
 975                         this._setOverflowIndicator();
 976                 },
 977
 978                 _add_event: function () {
 979                         var self = this,
 980                                 $c = this._$clip,
 981                                 $v = this._$view;
 982
 983                         if ( this.options.eventType === "mouse" ) {
 984                                 this._dragEvt = "mousedown mousemove mouseup click mousewheel";
 985
 986                                 this._dragCB = function ( e ) {
 987                                         switch ( e.type ) {
 988                                         case "mousedown":
 989                                                 return self._handleDragStart( e,
 990                                                                 e.clientX, e.clientY );
 991
 992                                         case "mousemove":
 993                                                 return self._handleDragMove( e,
 994                                                                 e.clientX, e.clientY );
 995
 996                                         case "mouseup":
 997                                                 return self._handleDragStop( e );
 998
 999                                         case "click":
1000                                                 return !self._didDrag;
1001
1002                                         case "mousewheel":
1003                                                 var old = self.getScrollPosition();
1004                                                 self.scrollTo( -old.x,
1005                                                         -(old.y - e.originalEvent.wheelDelta) );
1006                                                 break;
1007                                         }
1008                                 };
1009                         } else {
1010                                 this._dragEvt = "touchstart touchmove touchend click";
1011
1012                                 this._dragCB = function ( e ) {
1013                                         var touches = e.originalEvent.touches;
1014
1015                                         switch ( e.type ) {
1016                                         case "touchstart":
1017                                                 if ( touches.length != 1) {
1018                                                         return;
1019                                                 }
1020
1021                                                 return self._handleDragStart( e,
1022                                                                 touches[0].pageX, touches[0].pageY );
1023
1024                                         case "touchmove":
1025                                                 if ( touches.length != 1) {
1026                                                         return;
1027                                                 }
1028
1029                                                 return self._handleDragMove( e,
1030                                                                 touches[0].pageX, touches[0].pageY );
1031
1032                                         case "touchend":
1033                                                 if ( touches.length != 0) {
1034                                                         return;
1035                                                 }
1036
1037                                                 return self._handleDragStop( e );
1038
1039                                         case "click":
1040                                                 return !self._didDrag;
1041                                         }
1042                                 };
1043                         }
1044
1045                         $v.bind( this._dragEvt, this._dragCB );
1046
1047                         $v.bind( "keydown", function ( e ) {
1048                                 var elem,
1049                                         elem_top,
1050                                         scroll_top = $( window ).scrollTop() - window.screenTop,
1051                                         screen_h;
1052
1053                                 if ( e.keyCode == 9 ) {
1054                                         return false;
1055                                 }
1056
1057                                 elem = $c.find(".ui-focus");
1058
1059                                 if ( elem === undefined ) {
1060                                         return;
1061                                 }
1062
1063                                 elem_top = elem.offset().top - scroll_top;
1064                                 screen_h = $c.offset().top + $c.height() - elem.height();
1065
1066                                 if ( self._softkeyboard ) {
1067                                         screen_h -= self._softkeyboardHeight;
1068                                 }
1069
1070                                 if ( ( elem_top < $c.offset().top ) || ( elem_top > screen_h ) ) {
1071                                         self.scrollTo( 0, self._sy -
1072                                                         ( elem_top - $c.offset().top - elem.height() ) );
1073                                 }
1074
1075                                 return;
1076                         });
1077
1078                         $v.bind( "keyup", function ( e ) {
1079                                 var input,
1080                                         elem,
1081                                         elem_top,
1082                                         scroll_top = $( window ).scrollTop() - window.screenTop,
1083                                         screen_h;
1084
1085                                 if ( e.keyCode != 9 ) {
1086                                         return;
1087                                 }
1088
1089                                 /* Tab Key */
1090
1091                                 input = $( this ).find(":input");
1092
1093                                 for ( i = 0; i < input.length; i++ ) {
1094                                         if ( !$( input[i] ).hasClass("ui-focus") ) {
1095                                                 continue;
1096                                         }
1097
1098                                         if ( i + 1 == input.length ) {
1099                                                 elem = $( input[0] );
1100                                         } else {
1101                                                 elem = $( input[i + 1] );
1102                                         }
1103
1104                                         elem_top = elem.offset().top - scroll_top;
1105                                         screen_h = $c.offset().top + $c.height() - elem.height();
1106
1107                                         if ( self._softkeyboard ) {
1108                                                 screen_h -= self._softkeyboardHeight;
1109                                         }
1110
1111                                         if ( ( elem_top < 0 ) || ( elem_top > screen_h ) ) {
1112                                                 self.scrollTo( 0, self._sy - elem_top +
1113                                                         elem.height() + $c.offset().top, 0);
1114                                         }
1115
1116                                         elem.focus();
1117
1118                                         break;
1119                                 }
1120
1121                                 return false;
1122                         });
1123
1124                         $c.bind( "updatelayout", function ( e ) {
1125                                 var sy,
1126                                         vh,
1127                                         view_h = self._getViewHeight();
1128
1129                                 if ( !$c.height() || !view_h ) {
1130                                         self.scrollTo( 0, 0, 0 );
1131                                         return;
1132                                 }
1133
1134                                 sy = $c.height() - view_h;
1135                                 vh = view_h - self._view_height;
1136
1137                                 self._view_height = view_h;
1138
1139                                 if ( vh == 0 || vh > $c.height() / 2 ) {
1140                                         return;
1141                                 }
1142
1143                                 if ( sy > 0 ) {
1144                                         self.scrollTo( 0, 0, 0 );
1145                                 } else if ( self._sy - sy <= -vh ) {
1146                                         self.scrollTo( 0, self._sy,
1147                                                 self.options.snapbackDuration );
1148                                 } else if ( self._sy - sy <= vh + self.options.moveThreshold ) {
1149                                         self.scrollTo( 0, sy,
1150                                                 self.options.snapbackDuration );
1151                                 }
1152                         });
1153
1154                         $( window ).bind( "resize", function ( e ) {
1155                                 var focused,
1156                                         view_h = self._getViewHeight();
1157
1158                                 if ( $(".ui-page-active").get(0) !== $c.closest(".ui-page").get(0) ) {
1159                                         return;
1160                                 }
1161
1162                                 if ( !$c.height() || !view_h ) {
1163                                         return;
1164                                 }
1165
1166                                 focused = $c.find(".ui-focus");
1167
1168                                 if ( focused ) {
1169                                         focused.trigger("resize.scrollview");
1170                                 }
1171
1172                                 /* calibration - after triggered throttledresize */
1173                                 setTimeout( function () {
1174                                         if ( self._sy < $c.height() - self._getViewHeight() ) {
1175                                                 self.scrollTo( 0, $c.height() - self._getViewHeight(),
1176                                                         self.options.overshootDuration );
1177                                         }
1178                                 }, 260 );
1179
1180                                 self._view_height = view_h;
1181                         });
1182
1183                         $( window ).bind( "vmouseout", function ( e ) {
1184                                 var drag_stop = false;
1185
1186                                 if ( $(".ui-page-active").get(0) !== $c.closest(".ui-page").get(0) ) {
1187                                         return;
1188                                 }
1189
1190                                 if ( !self._dragging ) {
1191                                         return;
1192                                 }
1193
1194                                 if ( e.pageX < 0 || e.pageX > $( window ).width() ) {
1195                                         drag_stop = true;
1196                                 }
1197
1198                                 if ( e.pageY < 0 || e.pageY > $( window ).height() ) {
1199                                         drag_stop = true;
1200                                 }
1201
1202                                 if ( drag_stop ) {
1203                                         self._hideScrollBars();
1204                                         self._hideOverflowIndicator();
1205                                         self._disableTracking();
1206                                 }
1207                         });
1208
1209                         this._softkeyboard = false;
1210                         this._softkeyboardHeight = 0;
1211
1212                         window.addEventListener( "softkeyboardchange", function ( e ) {
1213                                 if ( $(".ui-page-active").get(0) !== $c.closest(".ui-page").get(0) ) {
1214                                         return;
1215                                 }
1216
1217                                 self._softkeyboard = ( e.state === "on" ? true : false );
1218                                 self._softkeyboardHeight = parseInt( e.height ) *
1219                                                 ( $( window ).width() / window.screen.availWidth );
1220                         });
1221
1222                         $c.closest(".ui-page")
1223                                 .bind( "pageshow", function ( e ) {
1224                                         /* should be called after pagelayout */
1225                                         setTimeout( function () {
1226                                                 self._view_height = self._getViewHeight();
1227                                                 self._set_scrollbar_size();
1228                                                 self._setScrollPosition( self._sx, self._sy );
1229                                                 self._showScrollBars( 2000 );
1230                                         }, 0 );
1231                                 });
1232                 },
1233
1234                 _add_scrollbar: function () {
1235                         var $c = this._$clip,
1236                                 prefix = "<div class=\"ui-scrollbar ui-scrollbar-",
1237                                 suffix = "\"><div class=\"ui-scrollbar-track\"><div class=\"ui-scrollbar-thumb\"></div></div></div>";
1238
1239                         if ( !this.options.showScrollBars ) {
1240                                 return;
1241                         }
1242
1243                         if ( this._vTracker ) {
1244                                 $c.append( prefix + "y" + suffix );
1245                                 this._$vScrollBar = $c.children(".ui-scrollbar-y");
1246                         }
1247                         if ( this._hTracker ) {
1248                                 $c.append( prefix + "x" + suffix );
1249                                 this._$hScrollBar = $c.children(".ui-scrollbar-x");
1250                         }
1251
1252                         this._scrollbar_showed = false;
1253                 },
1254
1255                 _add_scroll_jump: function () {
1256                         var $c = this._$clip,
1257                                 self = this,
1258                                 top_btn,
1259                                 left_btn;
1260
1261                         if ( !this.options.scrollJump ) {
1262                                 return;
1263                         }
1264
1265                         if ( this._vTracker ) {
1266                                 top_btn = $( '<div class="ui-scroll-jump-top-bg">' +
1267                                                 '<div data-role="button" data-inline="true" data-icon="scrolltop" data-style="box"></div></div>' );
1268                                 $c.append( top_btn ).trigger("create");
1269
1270                                 top_btn.bind( "vclick", function () {
1271                                         self.scrollTo( 0, 0, self.options.overshootDuration );
1272                                 } );
1273                         }
1274
1275                         if ( this._hTracker ) {
1276                                 left_btn = $( '<div class="ui-scroll-jump-left-bg">' +
1277                                                 '<div data-role="button" data-inline="true" data-icon="scrollleft" data-style="box"></div></div>' );
1278                                 $c.append( left_btn ).trigger("create");
1279
1280                                 left_btn.bind( "vclick", function () {
1281                                         self.scrollTo( 0, 0, self.options.overshootDuration );
1282                                 } );
1283                         }
1284                 },
1285
1286                 _add_overflow_indicator: function () {
1287                         if ( !this.options.overflowEnable ) {
1288                                 return;
1289                         }
1290
1291                         this._overflow_top = $( '<div class="ui-overflow-indicator-top"></div>' );
1292                         this._overflow_bottom = $( '<div class="ui-overflow-indicator-bottom"></div>' );
1293
1294                         this._$clip.append( this._overflow_top );
1295                         this._$clip.append( this._overflow_bottom );
1296
1297                         this._opacity_top = "0.5";
1298                         this._opacity_bottom = "0.5";
1299                         this._overflow_showed = false;
1300                 },
1301
1302                 _set_scrollbar_size: function () {
1303                         var $c = this._$clip,
1304                                 $v = this._$view,
1305                                 cw = 0,
1306                                 vw = 0,
1307                                 ch = 0,
1308                                 vh = 0,
1309                                 thumb;
1310
1311                         if ( !this.options.showScrollBars ) {
1312                                 return;
1313                         }
1314
1315                         if ( this._hTracker ) {
1316                                 cw = $c.width();
1317                                 vw = $v.width();
1318                                 this._maxX = cw - vw;
1319
1320                                 if ( this._maxX > 0 ) {
1321                                         this._maxX = 0;
1322                                 }
1323                                 if ( this._$hScrollBar && vw ) {
1324                                         thumb = this._$hScrollBar.find(".ui-scrollbar-thumb");
1325                                         thumb.css( "width", (cw >= vw ? "0" :
1326                                                         (Math.floor(cw / vw * 100) || 1) + "%") );
1327                                 }
1328                         }
1329
1330                         if ( this._vTracker ) {
1331                                 ch = $c.height();
1332                                 vh = this._getViewHeight();
1333                                 this._maxY = ch - vh;
1334
1335                                 if ( this._maxY > 0 ) {
1336                                         this._maxY = 0;
1337                                 }
1338                                 if ( this._$vScrollBar && vh ) {
1339                                         thumb = this._$vScrollBar.find(".ui-scrollbar-thumb");
1340                                         thumb.css( "height", (ch >= vh ? "0" :
1341                                                         (Math.floor(ch / vh * 100) || 1) + "%") );
1342
1343                                         this._overflowAvail = !!thumb.height();
1344                                 }
1345                         }
1346                 }
1347         });
1348
1349         $.extend( MomentumTracker.prototype, {
1350                 start: function ( pos, speed, duration, minPos, maxPos ) {
1351                         var tstate = ( pos < minPos || pos > maxPos ) ?
1352                                         tstates.snapback : tstates.scrolling,
1353                                 pos_temp;
1354
1355                         this.state = ( speed !== 0 ) ? tstate : tstates.done;
1356                         this.pos = pos;
1357                         this.speed = speed;
1358                         this.duration = ( this.state === tstates.snapback ) ?
1359                                         this.options.snapbackDuration : duration;
1360                         this.minPos = minPos;
1361                         this.maxPos = maxPos;
1362
1363                         this.fromPos = ( this.state === tstates.snapback ) ? this.pos : 0;
1364                         pos_temp = ( this.pos < this.minPos ) ? this.minPos : this.maxPos;
1365                         this.toPos = ( this.state === tstates.snapback ) ? pos_temp : 0;
1366
1367                         this.startTime = getCurrentTime();
1368                 },
1369
1370                 reset: function () {
1371                         this.state = tstates.done;
1372                         this.pos = 0;
1373                         this.speed = 0;
1374                         this.minPos = 0;
1375                         this.maxPos = 0;
1376                         this.duration = 0;
1377                         this.remained = 0;
1378                 },
1379
1380                 update: function ( overshootEnable ) {
1381                         var state = this.state,
1382                                 cur_time = getCurrentTime(),
1383                                 duration = this.duration,
1384                                 elapsed =  cur_time - this.startTime,
1385                                 dx,
1386                                 x,
1387                                 didOverShoot;
1388
1389                         if ( state === tstates.done ) {
1390                                 return this.pos;
1391                         }
1392
1393                         elapsed = elapsed > duration ? duration : elapsed;
1394
1395                         this.remained = duration - elapsed;
1396
1397                         if ( state === tstates.scrolling || state === tstates.overshot ) {
1398                                 dx = this.speed *
1399                                         ( 1 - $.easing[this.easing]( elapsed / duration,
1400                                                                 elapsed, 0, 1, duration ) );
1401
1402                                 x = this.pos + dx;
1403
1404                                 didOverShoot = ( state === tstates.scrolling ) &&
1405                                         ( x < this.minPos || x > this.maxPos );
1406
1407                                 if ( didOverShoot ) {
1408                                         x = ( x < this.minPos ) ? this.minPos : this.maxPos;
1409                                 }
1410
1411                                 this.pos = x;
1412
1413                                 if ( state === tstates.overshot ) {
1414                                         if ( !overshootEnable ) {
1415                                                 this.state = tstates.done;
1416                                         }
1417                                         if ( elapsed >= duration ) {
1418                                                 this.state = tstates.snapback;
1419                                                 this.fromPos = this.pos;
1420                                                 this.toPos = ( x < this.minPos ) ?
1421                                                                 this.minPos : this.maxPos;
1422                                                 this.duration = this.options.snapbackDuration;
1423                                                 this.startTime = cur_time;
1424                                                 elapsed = 0;
1425                                         }
1426                                 } else if ( state === tstates.scrolling ) {
1427                                         if ( didOverShoot && overshootEnable ) {
1428                                                 this.state = tstates.overshot;
1429                                                 this.speed = dx / 2;
1430                                                 this.duration = this.options.overshootDuration;
1431                                                 this.startTime = cur_time;
1432                                         } else if ( elapsed >= duration ) {
1433                                                 this.state = tstates.done;
1434                                         }
1435                                 }
1436                         } else if ( state === tstates.snapback ) {
1437                                 if ( elapsed >= duration ) {
1438                                         this.pos = this.toPos;
1439                                         this.state = tstates.done;
1440                                 } else {
1441                                         this.pos = this.fromPos + (( this.toPos - this.fromPos ) *
1442                                                 $.easing[this.easing]( elapsed / duration,
1443                                                         elapsed, 0, 1, duration ));
1444                                 }
1445                         }
1446
1447                         return this.pos;
1448                 },
1449
1450                 done: function () {
1451                         return this.state === tstates.done;
1452                 },
1453
1454                 isMin: function () {
1455                         return this.pos === this.minPos;
1456                 },
1457
1458                 isMax: function () {
1459                         return this.pos === this.maxPos;
1460                 },
1461
1462                 isAvail: function () {
1463                         return !( this.minPos === this.maxPos );
1464                 },
1465
1466                 getRemained: function () {
1467                         return this.remained;
1468                 },
1469
1470                 getPosition: function () {
1471                         return this.pos;
1472                 }
1473         });
1474
1475         $( document ).bind( 'pagecreate create', function ( e ) {
1476                 var $page = $( e.target ),
1477                         content_scroll = $page.find(".ui-content").jqmData("scroll");
1478
1479                 /* content scroll */
1480                 if ( $.support.scrollview === undefined ) {
1481                         $.support.scrollview = true;
1482                 }
1483
1484                 if ( $.support.scrollview === true && content_scroll === undefined ) {
1485                         content_scroll = "y";
1486                 }
1487
1488                 if ( content_scroll !== "y" ) {
1489                         content_scroll = "none";
1490                 }
1491
1492                 $page.find(".ui-content").attr( "data-scroll", content_scroll );
1493
1494                 $page.find(":jqmData(scroll)").not(".ui-scrollview-clip").each( function () {
1495                         if ( $( this ).hasClass("ui-scrolllistview") ) {
1496                                 $( this ).scrolllistview();
1497                         } else {
1498                                 var st = $( this ).jqmData("scroll"),
1499                                         dir = st && ( st.search(/^[xy]/) !== -1 ) ? st : null,
1500                                         content = $(this).hasClass("ui-content"),
1501                                         opts;
1502
1503                                 if ( st === "none" ) {
1504                                         return;
1505                                 }
1506
1507                                 opts = {
1508                                         direction: dir || undefined,
1509                                         overflowEnable: content,
1510                                         scrollMethod: $( this ).jqmData("scroll-method") || undefined,
1511                                         scrollJump: $( this ).jqmData("scroll-jump") || undefined
1512                                 };
1513
1514                                 $( this ).scrollview( opts );
1515                         }
1516                 });
1517         });
1518
1519         $( document ).bind( 'pageshow', function ( e ) {
1520                 var $page = $( e.target ),
1521                         scroll = $page.find(".ui-content").jqmData("scroll");
1522
1523                 if ( scroll === "y" ) {
1524                         resizePageContentHeight( e.target );
1525                 }
1526         });
1527
1528 }( jQuery, window, document ) );
1529
1530 //>>excludeStart("jqmBuildExclude", pragmas.jqmBuildExclude);
1531 } );
1532 //>>excludeEnd("jqmBuildExclude");