/**
 * @class Ext.slider.Single
 * @extends Ext.slider.Multi
 * Slider which supports vertical or horizontal orientation, keyboard adjustments,
 * configurable snapping, axis clicking and animation. Can be added as an item to
 * any container. 
 * {@img Ext.slider.Single/Ext.slider.Single.png Ext.slider.Single component}
 * Example usage:
<pre><code>
    Ext.create('Ext.slider.Single', {
        width: 200,
        value: 50,
        increment: 10,
        minValue: 0,
        maxValue: 100,
        renderTo: Ext.getBody()
    });
</code></pre>
 * The class Ext.slider.Single is aliased to Ext.Slider for backwards compatibility.
 */
Ext.define('Ext.slider.Single', {
    extend: 'Ext.slider.Multi',
    alias: ['widget.slider', 'widget.sliderfield'],
    alternateClassName: ['Ext.Slider', 'Ext.form.SliderField', 'Ext.slider.SingleSlider', 'Ext.slider.Slider'],

    /**
     * Returns the current value of the slider
     * @return {Number} The current value of the slider
     */
    getValue: function() {
        //just returns the value of the first thumb, which should be the only one in a single slider
        return this.callParent([0]);
    },

    /**
     * Programmatically sets the value of the Slider. Ensures that the value is constrained within
     * the minValue and maxValue.
     * @param {Number} value The value to set the slider to. (This will be constrained within minValue and maxValue)
     * @param {Boolean} animate Turn on or off animation, defaults to true
     */
    setValue: function(value, animate) {
        var args = Ext.toArray(arguments),
            len  = args.length;

        //this is to maintain backwards compatiblity for sliders with only one thunb. Usually you must pass the thumb
        //index to setValue, but if we only have one thumb we inject the index here first if given the multi-slider
        //signature without the required index. The index will always be 0 for a single slider
        if (len == 1 || (len <= 3 && typeof arguments[1] != 'number')) {
            args.unshift(0);
        }

        return this.callParent(args);
    },

    // private
    getNearest : function(){
        // Since there's only 1 thumb, it's always the nearest
        return this.thumbs[0];
    }
});