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diff --git a/contexts/data/lib/closure-library/closure/goog/ui/slider.js b/contexts/data/lib/closure-library/closure/goog/ui/slider.js
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--- a/contexts/data/lib/closure-library/closure/goog/ui/slider.js
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-// Copyright 2006 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview A slider implementation that allows to select a value within a
- * range by dragging a thumb. The selected value is exposed through getValue().
- *
- * To decorate, the slider should be bound to an element with the class name
- * 'goog-slider-[vertical / horizontal]' containing a child with the classname
- * 'goog-slider-thumb'.
- *
- * Decorate Example:
- * <div id="slider" class="goog-slider-horizontal">
- * <div class="goog-twothumbslider-thumb">
- * </div>
- * <script>
- *
- * var slider = new goog.ui.Slider;
- * slider.decorate(document.getElementById('slider'));
- *
- * @author arv@google.com (Erik Arvidsson)
- * @see ../demos/slider.html
- */
-
-// Implementation note: We implement slider by inheriting from baseslider,
-// which allows to select sub-ranges within a range using two thumbs. All we do
-// is we co-locate the two thumbs into one.
-
-goog.provide('goog.ui.Slider');
-goog.provide('goog.ui.Slider.Orientation');
-
-goog.require('goog.dom');
-goog.require('goog.dom.a11y');
-goog.require('goog.dom.a11y.Role');
-goog.require('goog.ui.SliderBase');
-goog.require('goog.ui.SliderBase.Orientation');
-
-
-
-/**
- * This creates a slider object.
- * @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper.
- * @constructor
- * @extends {goog.ui.SliderBase}
- */
-goog.ui.Slider = function(opt_domHelper) {
- goog.ui.SliderBase.call(this, opt_domHelper);
- this.rangeModel.setExtent(0);
-};
-goog.inherits(goog.ui.Slider, goog.ui.SliderBase);
-
-
-/**
- * Expose Enum of superclass (representing the orientation of the slider) within
- * Slider namespace.
- *
- * @enum {string}
- */
-goog.ui.Slider.Orientation = goog.ui.SliderBase.Orientation;
-
-
-/**
- * The prefix we use for the CSS class names for the slider and its elements.
- * @type {string}
- */
-goog.ui.Slider.CSS_CLASS_PREFIX = goog.getCssName('goog-slider');
-
-
-/**
- * CSS class name for the single thumb element.
- * @type {string}
- */
-goog.ui.Slider.THUMB_CSS_CLASS =
- goog.getCssName(goog.ui.Slider.CSS_CLASS_PREFIX, 'thumb');
-
-
-/**
- * Returns CSS class applied to the slider element.
- * @param {goog.ui.SliderBase.Orientation} orient Orientation of the slider.
- * @return {string} The CSS class applied to the slider element.
- * @protected
- * @override
- */
-goog.ui.Slider.prototype.getCssClass = function(orient) {
- return orient == goog.ui.SliderBase.Orientation.VERTICAL ?
- goog.getCssName(goog.ui.Slider.CSS_CLASS_PREFIX, 'vertical') :
- goog.getCssName(goog.ui.Slider.CSS_CLASS_PREFIX, 'horizontal');
-};
-
-
-/** @override */
-goog.ui.Slider.prototype.createThumbs = function() {
- // find thumb
- var element = this.getElement();
- var thumb = goog.dom.getElementsByTagNameAndClass(
- null, goog.ui.Slider.THUMB_CSS_CLASS, element)[0];
- if (!thumb) {
- thumb = this.createThumb_();
- element.appendChild(thumb);
- }
- this.valueThumb = this.extentThumb = thumb;
-};
-
-
-/**
- * Creates the thumb element.
- * @return {HTMLDivElement} The created thumb element.
- * @private
- */
-goog.ui.Slider.prototype.createThumb_ = function() {
- var thumb =
- this.getDomHelper().createDom('div', goog.ui.Slider.THUMB_CSS_CLASS);
- goog.dom.a11y.setRole(thumb, goog.dom.a11y.Role.BUTTON);
- return /** @type {HTMLDivElement} */ (thumb);
-};
-