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-// ///<reference path="../../headers/common.d.ts" />
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-//
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-// import _ from 'lodash';
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-//
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-// var objectAssign = require('object-assign');
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-// var Emitter = require('tiny-emitter');
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-// var Lethargy = require('lethargy').Lethargy;
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-// var support = require('./support');
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-// var clone = require('./clone');
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-// var bindAll = require('bindall-standalone');
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-// var EVT_ID = 'virtualscroll';
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-//
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-// var keyCodes = {
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-// LEFT: 37,
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-// UP: 38,
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-// RIGHT: 39,
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-// DOWN: 40
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-// };
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-//
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-// function VirtualScroll(this: any, options) {
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-// _.bindAll(this, '_onWheel', '_onMouseWheel', '_onTouchStart', '_onTouchMove', '_onKeyDown');
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-//
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-// this.el = window;
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-// if (options && options.el) {
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-// this.el = options.el;
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-// delete options.el;
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-// }
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-//
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-// this.options = _.assign({
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-// mouseMultiplier: 1,
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-// touchMultiplier: 2,
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-// firefoxMultiplier: 15,
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-// keyStep: 120,
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-// preventTouch: false,
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-// unpreventTouchClass: 'vs-touchmove-allowed',
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-// limitInertia: false
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-// }, options);
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-//
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-// if (this.options.limitInertia) this._lethargy = new Lethargy();
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-//
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-// this._emitter = new Emitter();
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-// this._event = {
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-// y: 0,
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-// x: 0,
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-// deltaX: 0,
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-// deltaY: 0
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-// };
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-//
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-// this.touchStartX = null;
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-// this.touchStartY = null;
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-// this.bodyTouchAction = null;
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-// }
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-//
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-// VirtualScroll.prototype._notify = function(e) {
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-// var evt = this._event;
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-// evt.x += evt.deltaX;
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-// evt.y += evt.deltaY;
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-//
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-// this._emitter.emit(EVT_ID, {
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-// x: evt.x,
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-// y: evt.y,
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-// deltaX: evt.deltaX,
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-// deltaY: evt.deltaY,
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-// originalEvent: e
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-// });
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-// };
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-//
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-// VirtualScroll.prototype._onWheel = function(e) {
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-// var options = this.options;
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-// if (this._lethargy && this._lethargy.check(e) === false) return;
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-//
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-// var evt = this._event;
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-//
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-// // In Chrome and in Firefox (at least the new one)
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-// evt.deltaX = e.wheelDeltaX || e.deltaX * -1;
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-// evt.deltaY = e.wheelDeltaY || e.deltaY * -1;
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-//
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-// // for our purpose deltamode = 1 means user is on a wheel mouse, not touch pad
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-// // real meaning: https://developer.mozilla.org/en-US/docs/Web/API/WheelEvent#Delta_modes
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-// if(support.isFirefox && e.deltaMode == 1) {
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-// evt.deltaX *= options.firefoxMultiplier;
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-// evt.deltaY *= options.firefoxMultiplier;
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-// }
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-//
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-// evt.deltaX *= options.mouseMultiplier;
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-// evt.deltaY *= options.mouseMultiplier;
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-//
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-// this._notify(e);
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-// };
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-//
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-// VirtualScroll.prototype._onMouseWheel = function(e) {
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-// if (this.options.limitInertia && this._lethargy.check(e) === false) return;
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-//
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-// var evt = this._event;
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-//
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-// // In Safari, IE and in Chrome if 'wheel' isn't defined
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-// evt.deltaX = (e.wheelDeltaX) ? e.wheelDeltaX : 0;
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-// evt.deltaY = (e.wheelDeltaY) ? e.wheelDeltaY : e.wheelDelta;
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-//
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-// this._notify(e);
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-// };
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-//
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-// VirtualScroll.prototype._onTouchStart = function(e) {
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-// var t = (e.targetTouches) ? e.targetTouches[0] : e;
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-// this.touchStartX = t.pageX;
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-// this.touchStartY = t.pageY;
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-// };
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-//
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-// VirtualScroll.prototype._onTouchMove = function(e) {
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-// var options = this.options;
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-// if(options.preventTouch
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-// && !e.target.classList.contains(options.unpreventTouchClass)) {
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-// e.preventDefault();
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-// }
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-//
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-// var evt = this._event;
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-//
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-// var t = (e.targetTouches) ? e.targetTouches[0] : e;
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-//
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-// evt.deltaX = (t.pageX - this.touchStartX) * options.touchMultiplier;
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-// evt.deltaY = (t.pageY - this.touchStartY) * options.touchMultiplier;
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-//
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-// this.touchStartX = t.pageX;
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-// this.touchStartY = t.pageY;
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-//
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-// this._notify(e);
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-// };
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-//
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-// VirtualScroll.prototype._onKeyDown = function(e) {
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-// var evt = this._event;
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-// evt.deltaX = evt.deltaY = 0;
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-//
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-// switch(e.keyCode) {
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-// case keyCodes.LEFT:
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-// case keyCodes.UP:
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-// evt.deltaY = this.options.keyStep;
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-// break;
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-//
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-// case keyCodes.RIGHT:
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-// case keyCodes.DOWN:
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-// evt.deltaY = - this.options.keyStep;
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-// break;
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-//
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-// default:
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-// return;
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-// }
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-//
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-// this._notify(e);
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-// };
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-//
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-// VirtualScroll.prototype._bind = function() {
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-// if(support.hasWheelEvent) this.el.addEventListener('wheel', this._onWheel);
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-// if(support.hasMouseWheelEvent) this.el.addEventListener('mousewheel', this._onMouseWheel);
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-//
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-// if(support.hasTouch) {
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-// this.el.addEventListener('touchstart', this._onTouchStart);
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-// this.el.addEventListener('touchmove', this._onTouchMove);
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-// }
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-//
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-// if(support.hasPointer && support.hasTouchWin) {
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-// this.bodyTouchAction = document.body.style.msTouchAction;
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-// document.body.style.msTouchAction = 'none';
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-// this.el.addEventListener('MSPointerDown', this._onTouchStart, true);
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-// this.el.addEventListener('MSPointerMove', this._onTouchMove, true);
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-// }
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-//
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-// if(support.hasKeyDown) document.addEventListener('keydown', this._onKeyDown);
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-// };
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-//
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-// VirtualScroll.prototype._unbind = function() {
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-// if(support.hasWheelEvent) this.el.removeEventListener('wheel', this._onWheel);
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-// if(support.hasMouseWheelEvent) this.el.removeEventListener('mousewheel', this._onMouseWheel);
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-//
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-// if(support.hasTouch) {
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-// this.el.removeEventListener('touchstart', this._onTouchStart);
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-// this.el.removeEventListener('touchmove', this._onTouchMove);
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-// }
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-//
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-// if(support.hasPointer && support.hasTouchWin) {
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-// document.body.style.msTouchAction = this.bodyTouchAction;
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-// this.el.removeEventListener('MSPointerDown', this._onTouchStart, true);
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-// this.el.removeEventListener('MSPointerMove', this._onTouchMove, true);
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-// }
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-//
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-// if(support.hasKeyDown) document.removeEventListener('keydown', this._onKeyDown);
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-// };
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-//
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-// VirtualScroll.prototype.on = function(cb, ctx) {
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-// this._emitter.on(EVT_ID, cb, ctx);
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-//
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-// var events = this._emitter.e;
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-// if (events && events[EVT_ID] && events[EVT_ID].length === 1) this._bind();
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-// };
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-//
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-// VirtualScroll.prototype.off = function(cb, ctx) {
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-// this._emitter.off(EVT_ID, cb, ctx);
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-//
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-// var events = this._emitter.e;
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-// if (!events[EVT_ID] || events[EVT_ID].length <= 0) this._unbind();
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-// };
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-//
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-// VirtualScroll.prototype.reset = function() {
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-// var evt = this._event;
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-// evt.x = 0;
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-// evt.y = 0;
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-// };
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-//
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-// VirtualScroll.prototype.destroy = function() {
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-// this._emitter.off();
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-// this._unbind();
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-// };
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Torkel Ödegaard