mirror of
https://github.com/jquery/jquery-ui.git
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756 lines
19 KiB
JavaScript
756 lines
19 KiB
JavaScript
/*!
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* jQuery UI Slider @VERSION
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* https://jqueryui.com
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*
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* Copyright OpenJS Foundation and other contributors
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* Released under the MIT license.
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* https://jquery.org/license
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*/
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//>>label: Slider
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//>>group: Widgets
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//>>description: Displays a flexible slider with ranges and accessibility via keyboard.
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//>>docs: https://api.jqueryui.com/slider/
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//>>demos: https://jqueryui.com/slider/
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//>>css.structure: ../../themes/base/core.css
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//>>css.structure: ../../themes/base/slider.css
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//>>css.theme: ../../themes/base/theme.css
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( function( factory ) {
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"use strict";
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if ( typeof define === "function" && define.amd ) {
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// AMD. Register as an anonymous module.
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define( [
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"jquery",
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"./mouse",
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"../keycode",
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"../version",
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"../widget"
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], factory );
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} else {
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// Browser globals
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factory( jQuery );
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}
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} )( function( $ ) {
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"use strict";
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return $.widget( "ui.slider", $.ui.mouse, {
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version: "@VERSION",
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widgetEventPrefix: "slide",
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options: {
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animate: false,
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classes: {
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"ui-slider": "ui-corner-all",
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"ui-slider-handle": "ui-corner-all",
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// Note: ui-widget-header isn't the most fittingly semantic framework class for this
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// element, but worked best visually with a variety of themes
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"ui-slider-range": "ui-corner-all ui-widget-header"
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},
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distance: 0,
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max: 100,
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min: 0,
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orientation: "horizontal",
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range: false,
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step: 1,
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value: 0,
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values: null,
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// Callbacks
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change: null,
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slide: null,
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start: null,
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stop: null
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},
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// Number of pages in a slider
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// (how many times can you page up/down to go through the whole range)
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numPages: 5,
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_create: function() {
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this._keySliding = false;
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this._mouseSliding = false;
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this._animateOff = true;
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this._handleIndex = null;
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this._detectOrientation();
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this._mouseInit();
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this._calculateNewMax();
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this._addClass( "ui-slider ui-slider-" + this.orientation,
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"ui-widget ui-widget-content" );
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this._refresh();
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this._animateOff = false;
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},
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_refresh: function() {
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this._createRange();
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this._createHandles();
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this._setupEvents();
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this._refreshValue();
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},
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_createHandles: function() {
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var i, handleCount,
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options = this.options,
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existingHandles = this.element.find( ".ui-slider-handle" ),
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handle = "<span tabindex='0'></span>",
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handles = [];
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handleCount = ( options.values && options.values.length ) || 1;
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if ( existingHandles.length > handleCount ) {
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existingHandles.slice( handleCount ).remove();
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existingHandles = existingHandles.slice( 0, handleCount );
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}
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for ( i = existingHandles.length; i < handleCount; i++ ) {
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handles.push( handle );
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}
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this.handles = existingHandles.add( $( handles.join( "" ) ).appendTo( this.element ) );
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this._addClass( this.handles, "ui-slider-handle", "ui-state-default" );
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this.handle = this.handles.eq( 0 );
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this.handles.each( function( i ) {
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$( this )
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.data( "ui-slider-handle-index", i )
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.attr( "tabIndex", 0 );
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} );
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},
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_createRange: function() {
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var options = this.options;
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if ( options.range ) {
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if ( options.range === true ) {
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if ( !options.values ) {
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options.values = [ this._valueMin(), this._valueMin() ];
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} else if ( options.values.length && options.values.length !== 2 ) {
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options.values = [ options.values[ 0 ], options.values[ 0 ] ];
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} else if ( Array.isArray( options.values ) ) {
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options.values = options.values.slice( 0 );
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}
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}
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if ( !this.range || !this.range.length ) {
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this.range = $( "<div>" )
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.appendTo( this.element );
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this._addClass( this.range, "ui-slider-range" );
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} else {
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this._removeClass( this.range, "ui-slider-range-min ui-slider-range-max" );
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// Handle range switching from true to min/max
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this.range.css( {
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"left": "",
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"bottom": ""
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} );
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}
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if ( options.range === "min" || options.range === "max" ) {
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this._addClass( this.range, "ui-slider-range-" + options.range );
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}
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} else {
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if ( this.range ) {
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this.range.remove();
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}
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this.range = null;
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}
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},
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_setupEvents: function() {
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this._off( this.handles );
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this._on( this.handles, this._handleEvents );
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this._hoverable( this.handles );
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this._focusable( this.handles );
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},
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_destroy: function() {
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this.handles.remove();
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if ( this.range ) {
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this.range.remove();
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}
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this._mouseDestroy();
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},
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_mouseCapture: function( event ) {
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var position, normValue, distance, closestHandle, index, allowed, offset, mouseOverHandle,
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that = this,
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o = this.options;
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if ( o.disabled ) {
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return false;
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}
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this.elementSize = {
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width: this.element.outerWidth(),
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height: this.element.outerHeight()
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};
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this.elementOffset = this.element.offset();
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position = { x: event.pageX, y: event.pageY };
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normValue = this._normValueFromMouse( position );
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distance = this._valueMax() - this._valueMin() + 1;
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this.handles.each( function( i ) {
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var thisDistance = Math.abs( normValue - that.values( i ) );
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if ( ( distance > thisDistance ) ||
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( distance === thisDistance &&
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( i === that._lastChangedValue || that.values( i ) === o.min ) ) ) {
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distance = thisDistance;
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closestHandle = $( this );
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index = i;
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}
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} );
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allowed = this._start( event, index );
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if ( allowed === false ) {
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return false;
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}
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this._mouseSliding = true;
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this._handleIndex = index;
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this._addClass( closestHandle, null, "ui-state-active" );
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closestHandle.trigger( "focus" );
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offset = closestHandle.offset();
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mouseOverHandle = !$( event.target ).parents().addBack().is( ".ui-slider-handle" );
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this._clickOffset = mouseOverHandle ? { left: 0, top: 0 } : {
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left: event.pageX - offset.left - ( closestHandle.width() / 2 ),
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top: event.pageY - offset.top -
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( closestHandle.height() / 2 ) -
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( parseInt( closestHandle.css( "borderTopWidth" ), 10 ) || 0 ) -
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( parseInt( closestHandle.css( "borderBottomWidth" ), 10 ) || 0 ) +
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( parseInt( closestHandle.css( "marginTop" ), 10 ) || 0 )
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};
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if ( !this.handles.hasClass( "ui-state-hover" ) ) {
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this._slide( event, index, normValue );
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}
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this._animateOff = true;
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return true;
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},
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_mouseStart: function() {
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return true;
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},
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_mouseDrag: function( event ) {
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var position = { x: event.pageX, y: event.pageY },
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normValue = this._normValueFromMouse( position );
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this._slide( event, this._handleIndex, normValue );
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return false;
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},
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_mouseStop: function( event ) {
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this._removeClass( this.handles, null, "ui-state-active" );
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this._mouseSliding = false;
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this._stop( event, this._handleIndex );
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this._change( event, this._handleIndex );
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this._handleIndex = null;
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this._clickOffset = null;
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this._animateOff = false;
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return false;
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},
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_detectOrientation: function() {
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this.orientation = ( this.options.orientation === "vertical" ) ? "vertical" : "horizontal";
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},
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_normValueFromMouse: function( position ) {
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var pixelTotal,
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pixelMouse,
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percentMouse,
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valueTotal,
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valueMouse;
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if ( this.orientation === "horizontal" ) {
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pixelTotal = this.elementSize.width;
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pixelMouse = position.x - this.elementOffset.left -
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( this._clickOffset ? this._clickOffset.left : 0 );
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} else {
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pixelTotal = this.elementSize.height;
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pixelMouse = position.y - this.elementOffset.top -
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( this._clickOffset ? this._clickOffset.top : 0 );
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}
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percentMouse = ( pixelMouse / pixelTotal );
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if ( percentMouse > 1 ) {
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percentMouse = 1;
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}
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if ( percentMouse < 0 ) {
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percentMouse = 0;
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}
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if ( this.orientation === "vertical" ) {
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percentMouse = 1 - percentMouse;
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}
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valueTotal = this._valueMax() - this._valueMin();
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valueMouse = this._valueMin() + percentMouse * valueTotal;
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return this._trimAlignValue( valueMouse );
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},
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_uiHash: function( index, value, values ) {
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var uiHash = {
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handle: this.handles[ index ],
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handleIndex: index,
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value: value !== undefined ? value : this.value()
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};
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if ( this._hasMultipleValues() ) {
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uiHash.value = value !== undefined ? value : this.values( index );
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uiHash.values = values || this.values();
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}
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return uiHash;
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},
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_hasMultipleValues: function() {
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return this.options.values && this.options.values.length;
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},
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_start: function( event, index ) {
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return this._trigger( "start", event, this._uiHash( index ) );
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},
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_slide: function( event, index, newVal ) {
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var allowed, otherVal,
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currentValue = this.value(),
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newValues = this.values();
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if ( this._hasMultipleValues() ) {
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otherVal = this.values( index ? 0 : 1 );
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currentValue = this.values( index );
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if ( this.options.values.length === 2 && this.options.range === true ) {
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newVal = index === 0 ? Math.min( otherVal, newVal ) : Math.max( otherVal, newVal );
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}
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newValues[ index ] = newVal;
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}
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if ( newVal === currentValue ) {
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return;
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}
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allowed = this._trigger( "slide", event, this._uiHash( index, newVal, newValues ) );
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// A slide can be canceled by returning false from the slide callback
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if ( allowed === false ) {
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return;
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}
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if ( this._hasMultipleValues() ) {
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this.values( index, newVal );
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} else {
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this.value( newVal );
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}
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},
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_stop: function( event, index ) {
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this._trigger( "stop", event, this._uiHash( index ) );
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},
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_change: function( event, index ) {
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if ( !this._keySliding && !this._mouseSliding ) {
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//store the last changed value index for reference when handles overlap
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this._lastChangedValue = index;
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this._trigger( "change", event, this._uiHash( index ) );
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}
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},
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value: function( newValue ) {
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if ( arguments.length ) {
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this.options.value = this._trimAlignValue( newValue );
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this._refreshValue();
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this._change( null, 0 );
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return;
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}
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return this._value();
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},
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values: function( index, newValue ) {
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var vals,
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newValues,
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i;
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if ( arguments.length > 1 ) {
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this.options.values[ index ] = this._trimAlignValue( newValue );
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this._refreshValue();
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this._change( null, index );
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return;
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}
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if ( arguments.length ) {
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if ( Array.isArray( arguments[ 0 ] ) ) {
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vals = this.options.values;
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newValues = arguments[ 0 ];
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for ( i = 0; i < vals.length; i += 1 ) {
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vals[ i ] = this._trimAlignValue( newValues[ i ] );
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this._change( null, i );
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}
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this._refreshValue();
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} else {
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if ( this._hasMultipleValues() ) {
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return this._values( index );
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} else {
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return this.value();
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}
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}
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} else {
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return this._values();
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}
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},
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_setOption: function( key, value ) {
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var i,
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valsLength = 0;
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if ( key === "range" && this.options.range === true ) {
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if ( value === "min" ) {
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this.options.value = this._values( 0 );
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this.options.values = null;
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} else if ( value === "max" ) {
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this.options.value = this._values( this.options.values.length - 1 );
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this.options.values = null;
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}
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}
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if ( Array.isArray( this.options.values ) ) {
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valsLength = this.options.values.length;
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}
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this._super( key, value );
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switch ( key ) {
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case "orientation":
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this._detectOrientation();
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this._removeClass( "ui-slider-horizontal ui-slider-vertical" )
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._addClass( "ui-slider-" + this.orientation );
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this._refreshValue();
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if ( this.options.range ) {
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this._refreshRange( value );
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}
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// Reset positioning from previous orientation
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this.handles.css( value === "horizontal" ? "bottom" : "left", "" );
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break;
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case "value":
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this._animateOff = true;
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this._refreshValue();
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this._change( null, 0 );
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this._animateOff = false;
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break;
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case "values":
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this._animateOff = true;
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this._refreshValue();
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// Start from the last handle to prevent unreachable handles (#9046)
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for ( i = valsLength - 1; i >= 0; i-- ) {
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this._change( null, i );
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}
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this._animateOff = false;
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break;
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case "step":
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case "min":
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case "max":
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this._animateOff = true;
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this._calculateNewMax();
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this._refreshValue();
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this._animateOff = false;
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break;
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case "range":
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this._animateOff = true;
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this._refresh();
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this._animateOff = false;
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break;
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}
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},
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_setOptionDisabled: function( value ) {
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this._super( value );
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this._toggleClass( null, "ui-state-disabled", !!value );
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},
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//internal value getter
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// _value() returns value trimmed by min and max, aligned by step
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_value: function() {
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var val = this.options.value;
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val = this._trimAlignValue( val );
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return val;
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},
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//internal values getter
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// _values() returns array of values trimmed by min and max, aligned by step
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// _values( index ) returns single value trimmed by min and max, aligned by step
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_values: function( index ) {
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var val,
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vals,
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i;
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if ( arguments.length ) {
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val = this.options.values[ index ];
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val = this._trimAlignValue( val );
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return val;
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} else if ( this._hasMultipleValues() ) {
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// .slice() creates a copy of the array
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// this copy gets trimmed by min and max and then returned
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vals = this.options.values.slice();
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for ( i = 0; i < vals.length; i += 1 ) {
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vals[ i ] = this._trimAlignValue( vals[ i ] );
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}
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return vals;
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} else {
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return [];
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}
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},
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// Returns the step-aligned value that val is closest to, between (inclusive) min and max
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_trimAlignValue: function( val ) {
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if ( val <= this._valueMin() ) {
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return this._valueMin();
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}
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if ( val >= this._valueMax() ) {
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return this._valueMax();
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}
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var step = ( this.options.step > 0 ) ? this.options.step : 1,
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valModStep = ( val - this._valueMin() ) % step,
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alignValue = val - valModStep;
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if ( Math.abs( valModStep ) * 2 >= step ) {
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alignValue += ( valModStep > 0 ) ? step : ( -step );
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}
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// Since JavaScript has problems with large floats, round
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// the final value to 5 digits after the decimal point (see #4124)
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return parseFloat( alignValue.toFixed( 5 ) );
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},
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_calculateNewMax: function() {
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var max = this.options.max,
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min = this._valueMin(),
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step = this.options.step,
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aboveMin = Math.round( ( max - min ) / step ) * step;
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max = aboveMin + min;
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if ( max > this.options.max ) {
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//If max is not divisible by step, rounding off may increase its value
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max -= step;
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}
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this.max = parseFloat( max.toFixed( this._precision() ) );
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},
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_precision: function() {
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var precision = this._precisionOf( this.options.step );
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if ( this.options.min !== null ) {
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precision = Math.max( precision, this._precisionOf( this.options.min ) );
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}
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return precision;
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},
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_precisionOf: function( num ) {
|
|
var str = num.toString(),
|
|
decimal = str.indexOf( "." );
|
|
return decimal === -1 ? 0 : str.length - decimal - 1;
|
|
},
|
|
|
|
_valueMin: function() {
|
|
return this.options.min;
|
|
},
|
|
|
|
_valueMax: function() {
|
|
return this.max;
|
|
},
|
|
|
|
_refreshRange: function( orientation ) {
|
|
if ( orientation === "vertical" ) {
|
|
this.range.css( { "width": "", "left": "" } );
|
|
}
|
|
if ( orientation === "horizontal" ) {
|
|
this.range.css( { "height": "", "bottom": "" } );
|
|
}
|
|
},
|
|
|
|
_refreshValue: function() {
|
|
var lastValPercent, valPercent, value, valueMin, valueMax,
|
|
oRange = this.options.range,
|
|
o = this.options,
|
|
that = this,
|
|
animate = ( !this._animateOff ) ? o.animate : false,
|
|
_set = {};
|
|
|
|
if ( this._hasMultipleValues() ) {
|
|
this.handles.each( function( i ) {
|
|
valPercent = ( that.values( i ) - that._valueMin() ) / ( that._valueMax() -
|
|
that._valueMin() ) * 100;
|
|
_set[ that.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";
|
|
$( this ).stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );
|
|
if ( that.options.range === true ) {
|
|
if ( that.orientation === "horizontal" ) {
|
|
if ( i === 0 ) {
|
|
that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
|
|
left: valPercent + "%"
|
|
}, o.animate );
|
|
}
|
|
if ( i === 1 ) {
|
|
that.range[ animate ? "animate" : "css" ]( {
|
|
width: ( valPercent - lastValPercent ) + "%"
|
|
}, {
|
|
queue: false,
|
|
duration: o.animate
|
|
} );
|
|
}
|
|
} else {
|
|
if ( i === 0 ) {
|
|
that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
|
|
bottom: ( valPercent ) + "%"
|
|
}, o.animate );
|
|
}
|
|
if ( i === 1 ) {
|
|
that.range[ animate ? "animate" : "css" ]( {
|
|
height: ( valPercent - lastValPercent ) + "%"
|
|
}, {
|
|
queue: false,
|
|
duration: o.animate
|
|
} );
|
|
}
|
|
}
|
|
}
|
|
lastValPercent = valPercent;
|
|
} );
|
|
} else {
|
|
value = this.value();
|
|
valueMin = this._valueMin();
|
|
valueMax = this._valueMax();
|
|
valPercent = ( valueMax !== valueMin ) ?
|
|
( value - valueMin ) / ( valueMax - valueMin ) * 100 :
|
|
0;
|
|
_set[ this.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";
|
|
this.handle.stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );
|
|
|
|
if ( oRange === "min" && this.orientation === "horizontal" ) {
|
|
this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
|
|
width: valPercent + "%"
|
|
}, o.animate );
|
|
}
|
|
if ( oRange === "max" && this.orientation === "horizontal" ) {
|
|
this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
|
|
width: ( 100 - valPercent ) + "%"
|
|
}, o.animate );
|
|
}
|
|
if ( oRange === "min" && this.orientation === "vertical" ) {
|
|
this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
|
|
height: valPercent + "%"
|
|
}, o.animate );
|
|
}
|
|
if ( oRange === "max" && this.orientation === "vertical" ) {
|
|
this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
|
|
height: ( 100 - valPercent ) + "%"
|
|
}, o.animate );
|
|
}
|
|
}
|
|
},
|
|
|
|
_handleEvents: {
|
|
keydown: function( event ) {
|
|
var allowed, curVal, newVal, step,
|
|
index = $( event.target ).data( "ui-slider-handle-index" );
|
|
|
|
switch ( event.keyCode ) {
|
|
case $.ui.keyCode.HOME:
|
|
case $.ui.keyCode.END:
|
|
case $.ui.keyCode.PAGE_UP:
|
|
case $.ui.keyCode.PAGE_DOWN:
|
|
case $.ui.keyCode.UP:
|
|
case $.ui.keyCode.RIGHT:
|
|
case $.ui.keyCode.DOWN:
|
|
case $.ui.keyCode.LEFT:
|
|
event.preventDefault();
|
|
if ( !this._keySliding ) {
|
|
this._keySliding = true;
|
|
this._addClass( $( event.target ), null, "ui-state-active" );
|
|
allowed = this._start( event, index );
|
|
if ( allowed === false ) {
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
step = this.options.step;
|
|
if ( this._hasMultipleValues() ) {
|
|
curVal = newVal = this.values( index );
|
|
} else {
|
|
curVal = newVal = this.value();
|
|
}
|
|
|
|
switch ( event.keyCode ) {
|
|
case $.ui.keyCode.HOME:
|
|
newVal = this._valueMin();
|
|
break;
|
|
case $.ui.keyCode.END:
|
|
newVal = this._valueMax();
|
|
break;
|
|
case $.ui.keyCode.PAGE_UP:
|
|
newVal = this._trimAlignValue(
|
|
curVal + ( ( this._valueMax() - this._valueMin() ) / this.numPages )
|
|
);
|
|
break;
|
|
case $.ui.keyCode.PAGE_DOWN:
|
|
newVal = this._trimAlignValue(
|
|
curVal - ( ( this._valueMax() - this._valueMin() ) / this.numPages ) );
|
|
break;
|
|
case $.ui.keyCode.UP:
|
|
case $.ui.keyCode.RIGHT:
|
|
if ( curVal === this._valueMax() ) {
|
|
return;
|
|
}
|
|
newVal = this._trimAlignValue( curVal + step );
|
|
break;
|
|
case $.ui.keyCode.DOWN:
|
|
case $.ui.keyCode.LEFT:
|
|
if ( curVal === this._valueMin() ) {
|
|
return;
|
|
}
|
|
newVal = this._trimAlignValue( curVal - step );
|
|
break;
|
|
}
|
|
|
|
this._slide( event, index, newVal );
|
|
},
|
|
keyup: function( event ) {
|
|
var index = $( event.target ).data( "ui-slider-handle-index" );
|
|
|
|
if ( this._keySliding ) {
|
|
this._keySliding = false;
|
|
this._stop( event, index );
|
|
this._change( event, index );
|
|
this._removeClass( $( event.target ), null, "ui-state-active" );
|
|
}
|
|
}
|
|
}
|
|
} );
|
|
|
|
} );
|