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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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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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// 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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_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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_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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_precisionOf: function( num ) {

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var str = num.toString(),

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decimal = str.indexOf( "." );

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return decimal === -1 ? 0 : str.length - decimal - 1;

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_valueMin: function() {

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return this.options.min;

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_valueMax: function() {

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return this.max;

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_refreshRange: function( orientation ) {

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if ( orientation === "vertical" ) {

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this.range.css( { "width": "", "left": "" } );

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}

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if ( orientation === "horizontal" ) {

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this.range.css( { "height": "", "bottom": "" } );

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}

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_refreshValue: function() {

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var lastValPercent, valPercent, value, valueMin, valueMax,

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oRange = this.options.range,

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o = this.options,

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that = this,

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animate = ( !this._animateOff ) ? o.animate : false,

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_set = {};

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if ( this._hasMultipleValues() ) {

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this.handles.each( function( i ) {

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valPercent = ( that.values( i ) - that._valueMin() ) / ( that._valueMax() -

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that._valueMin() ) * 100;

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_set[ that.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";

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$( this ).stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );

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if ( that.options.range === true ) {

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if ( that.orientation === "horizontal" ) {

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if ( i === 0 ) {

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that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {

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left: valPercent + "%"

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}, o.animate );

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}

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if ( i === 1 ) {

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that.range[ animate ? "animate" : "css" ]( {

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width: ( valPercent - lastValPercent ) + "%"

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}, {

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queue: false,

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duration: o.animate

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} );

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}

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} else {

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if ( i === 0 ) {

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that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {

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bottom: ( valPercent ) + "%"

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}, o.animate );

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}

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if ( i === 1 ) {

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that.range[ animate ? "animate" : "css" ]( {

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height: ( valPercent - lastValPercent ) + "%"

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}, {

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queue: false,

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duration: o.animate

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} );

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}

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}

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}

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lastValPercent = valPercent;

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} );

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} else {

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value = this.value();

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valueMin = this._valueMin();

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valueMax = this._valueMax();

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valPercent = ( valueMax !== valueMin ) ?

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( value - valueMin ) / ( valueMax - valueMin ) * 100 :

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_set[ this.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";

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this.handle.stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );

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if ( oRange === "min" && this.orientation === "horizontal" ) {

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this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {

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width: valPercent + "%"

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}, o.animate );

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}

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if ( oRange === "max" && this.orientation === "horizontal" ) {

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this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {

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width: ( 100 - valPercent ) + "%"

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}, o.animate );

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}

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if ( oRange === "min" && this.orientation === "vertical" ) {

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this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {

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height: valPercent + "%"

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}, o.animate );

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}

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if ( oRange === "max" && this.orientation === "vertical" ) {

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this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {

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height: ( 100 - valPercent ) + "%"

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}, o.animate );

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}

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}

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_handleEvents: {

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keydown: function( event ) {

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var allowed, curVal, newVal, step,

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index = $( event.target ).data( "ui-slider-handle-index" );

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switch ( event.keyCode ) {

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case $.ui.keyCode.HOME:

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case $.ui.keyCode.END:

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case $.ui.keyCode.PAGE_UP:

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case $.ui.keyCode.PAGE_DOWN:

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case $.ui.keyCode.UP:

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case $.ui.keyCode.RIGHT:

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case $.ui.keyCode.DOWN:

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case $.ui.keyCode.LEFT:

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event.preventDefault();

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if ( !this._keySliding ) {

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this._keySliding = true;

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this._addClass( $( event.target ), null, "ui-state-active" );

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allowed = this._start( event, index );

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if ( allowed === false ) {

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return;

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}

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}

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break;

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}

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step = this.options.step;

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if ( this._hasMultipleValues() ) {

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curVal = newVal = this.values( index );

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} else {

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curVal = newVal = this.value();

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}

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switch ( event.keyCode ) {

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case $.ui.keyCode.HOME:

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newVal = this._valueMin();

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break;

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case $.ui.keyCode.END:

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newVal = this._valueMax();

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break;

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case $.ui.keyCode.PAGE_UP:

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newVal = this._trimAlignValue(

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curVal + ( ( this._valueMax() - this._valueMin() ) / this.numPages )

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);

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break;

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case $.ui.keyCode.PAGE_DOWN:

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newVal = this._trimAlignValue(

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curVal - ( ( this._valueMax() - this._valueMin() ) / this.numPages ) );

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break;

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case $.ui.keyCode.UP:

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case $.ui.keyCode.RIGHT:

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if ( curVal === this._valueMax() ) {

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return;

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}

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newVal = this._trimAlignValue( curVal + step );

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break;

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case $.ui.keyCode.DOWN:

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case $.ui.keyCode.LEFT:

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if ( curVal === this._valueMin() ) {

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return;

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}

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newVal = this._trimAlignValue( curVal - step );

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break;

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}

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this._slide( event, index, newVal );

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keyup: function( event ) {

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var index = $( event.target ).data( "ui-slider-handle-index" );

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if ( this._keySliding ) {

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this._keySliding = false;

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this._stop( event, index );

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this._change( event, index );

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this._removeClass( $( event.target ), null, "ui-state-active" );

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}

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}

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}

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} );

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} );

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