jQuery UI Custom Widget

by ramyaaviji

HTML

<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css">
<div class="chart"></div>
<ul class="controls">
    <li> <span>Show Legend</span>

        <input type="checkbox" data-prop="legend" checked="checked" />
    </li>
    <li>
        <input type="button" value="Set Random Size" data-prop="size" />
    </li>
    <li>
        <input type="button" value="Generate Random Markers" data-prop="markers" />
    </li>
    <li>
        <input type="button" value="Generate Random Bars" data-prop="bars" />
    </li>
    <li>
        <input type="button" value="Generate Random Ticks" data-prop="ticks" />
    </li>
</ul>

CSS

.bullet-chart {
    font-size: 16px;
    -webkit-user-select: none;
}
.bullet-chart .chart-container {
    height: 30px;
    background: #EEE;
    position: relative;
    margin-left: 2.1em;
}
/* Bar */
 .bullet-chart .bar {
    background: #777;
    position: absolute;
    /* Vertical centering */
    height: 10px;
    top: 50%;
    margin-top: -5px;
}
/* Marker */
 .bullet-chart .marker {
    background: #555;
    width: 2px;
    height: 20px;
    position: absolute;
    left: 250px;
    top: 50%;
    margin-top: -10px;
}
.bullet-chart .red {
    background: #cd6668;
}
.bullet-chart .green {
    background: #72cd84;
}
.bullet-chart .blue {
    background: #64a0cb;
}
.bullet-chart .purple {
    background: #a77cdb;
}
.bullet-chart .orange {
    background: #ffb95e;
}
.bullet-chart .cyan {
    background: #a0e2ff;
}
/* Ticks */
 .bullet-chart .tick-bar {
    position: relative;
    top: 30px;
    border-top: 1px solid #AAA;
}
.bullet-chart .tick-bar .tick {
    position: absolute;
    width: 1px;
    height: 6px;
    top: -1px;
    background: #AAA;
}
.bullet-chart .tick-bar .tick-label {
    text-align: center;
    position: absolute;
    font-size: 0.6em;
    width: 2.1em;
    margin-left: -1.05em;
    top: 5px;
    color: #AAA;
}
/* Legend */
 .bullet-chart .legend {
    margin: 0 0 1em 2.1em;
    border: 1px solid #EEE;
    padding: 0.5em 0 0 0.5em;
    max-width: 300px;
}
.bullet-chart .legend .legend-item {
    display: inline-block;
    margin: 0 0.5em 0.5em 0;
    background: #FFE;
    padding: 0 5px;
    border-radius: 2px;
    cursor: pointer;
}
.legend-item .legend-symbol {
    position: static;
    margin: 0px;
    display: inline-block;
    vertical-align: middle;
}
.legend-item .legend-symbol.marker {
    height: 12px;
    width: 2px;
}
.legend-item .legend-symbol.bar {
    height: 12px;
    width: 7px;
}
.legend-item .legend-label {
    font-size: 0.6em;
    vertical-align: middle;
    margin-left: 5px;
}
.fade {
    opacity: 0.5;
}
/*...

JavaScript

(function ($) {

    /***********************************************************
     *          Base BulletChart widget
     ***********************************************************
     */
    $.widget('nt.bulletchart', {
        options: {
            // percentage: 0 - 100
            size: 100,

            //  [{ title: 'Sample Bar', value: 75, css: '' }],
            bars: [],

            //  [{ title: 'Sample Marker', value: 50, css: '' }],
            markers: [],

            // ticks -- percent values
            ticks: [0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100]
        },

        widgetEventPrefix: 'bulletchart:',

        _create: function () {
            this.element.addClass('bullet-chart');

            // chart container
            this._container = $('<div class="chart-container"></div>')
                .appendTo(this.element);

            this._setOptions({
                'size': this.options.size,
                    'ticks': this.options.ticks,
                    'bars': this.options.bars,
                    'markers': this.options.markers
            });

        },
        _destroy: function () {
            this.element.removeClass('bullet-chart');
            this.element.empty();
            this._super();
        },


        _setOption: function (key, value) {
            var self = this,
                prev = this.options[key],
                fnMap = {
                    'bars': function () {
                        createBars(value, self);
                    },
                        'markers': function () {
                        createMarkers(value, self);
                    },
                        'ticks': function () {
                        createTickBar(value, self);
                    },
                        'size': function () {
                        self.element.find('.chart-container')
                            .css('width', value + '%');
                    }
                };

          ...