WebCompDev / COMPONENTS

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@license
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<!--
* Developed by :
* ROUTE-TO-PA Project - grant No 645860. - www.routetopa.eu
*
-->

<link rel="import" href="../base-ajax-json-alasql-datalet/base-ajax-json-alasql-datalet.html">

<!--
The `highcharts-datalet` uses the base-ajax-json-jsonpath-datalet as data retriving and selection mechanism. It defines the common properties
for all the highchart datalets : categories, series and series_type. Overmore override the transformData method
to create and populate categories and series array. Every specific highchart chart implementation (eg linechart, barchart, columnchart ...)
will use highcharts-datalet properties to create the appropriate chart.

Example :

    <dom-module id="highcarts-chart-datalet">
        <template>
            ...
            <highcharts-datalet id="charts" data-url="{{dataUrl}}" fields="{{fields}}"></highcharts-datalet>
            ...
        </template>
    </dom-module>

@element highcharts-datalet
@status v0.1
@homepage
@group datalets
-->

<dom-module id="highcharts-datalet">

    <template>
        <div id="container" style="width:auto; height:auto;"></div>
        <base-ajax-json-alasql-datalet data-url="{{dataUrl}}" fields="{{fields}}" data="{{data}}" title="{{title}}" description="{{description}}"></base-ajax-json-alasql-datalet>
    </template>

    <script src="static/js/highcharts.js"></script>
    <script src="static/js/exporting.js"></script>
    <script src="static/js/highcharts-more.js"></script>
    <script src="static/themes/themes.js"></script>

    <script>
        var HighchartsBehavior = {

            properties: {

                categories: {
                    type: Array,
                    value: []
                },

                series: {
                    type: Array,
                    value: []
                },

//                series_type:{
//                    type: String,
//                    value: "line"//spline,time
//                }

            },
            /**
             * Normalizes a number in agreement with javascript's conventions. Delete all NaN characters. Exception: number representing lat & long remain unchanged.
             */
//            jNumConverter: function(num) {
//                //lat-long
//                if(num.charAt(num.length-7) == "." && (num.match(/[\.,]/g) || []).length == 1)
//                    return num;
//
//                num = num.replace(/[^0-9\.]/, '');
//
//                var jNum = "";
//                for (var i = 0; i < num.length; i++) {
//                    if(num[i].match(/[\.,]/g))
//                        if (i == num.length - 3)
//                            jNum += ".";
//                        else
//                            ;
//                    else if (!isNaN(num[i]))
//                        jNum += num[i];
//                }
//
//                return jNum;
//            },
            /**
             * Populate the categories and the series array.
             *
             * @method transformData
             *
             * @param {Event} e
             */
//            transformData: function () {
//
//                if(this.data.length == 0) return;
//
//                this.properties.categories.value = this.data[0].data;
//
//                for (var i = 1; i < this.data.length; i++)
//                {
//                    this.data[i].data.every(function (element, index, array) {
//                        try {
//                            var e = HighchartsBehavior.jNumConverter(element);
//                            (isNaN(element)) ? array[index] = parseFloat(HighchartsBehavior.jNumConverter(element)) :
//                                    array[index] = parseFloat(element);
//                        }catch(e){
//                            //console.log("Parsing data error. Highchart-datalet.selectData");
//                        }
//                        return true;
//                    });
//
//                    this.properties.series.value.push(this.data[i]);
//                }
//            },

            transformData: function () {
                if(this.data.length == 0)
                    return;

                if(this.data.length == 2){
                    this.properties.categories.value = this.data[0].data;
                    this.properties.series.value = [this.data[1]];
                }

                if(this.data.length == 3){//multi series
                    var x = this.data[0]["data"];
                    var gb = this.data[1]["data"];
                    var y = this.data[2]["data"];

                    var categories = x.filter(function(item, pos) {
                        return x.indexOf(item) == pos;
                    })

                    var s = gb.filter(function(item, pos) {
                        return gb.indexOf(item) == pos;
                    })

                    var series = [];
                    for(var i = 0; i < s.length; i++) {
                        series.push({name: s[i], data: new Array(categories.length+1).join('0').split('').map(parseFloat)});
                    }

                    for (var i = 0; i < y.length; i++){
                        var index = categories.indexOf(x[i]);
                        var s = series.filter(function( obj ) {
                            return obj.name == gb[i];
                        });
                       s[0]["data"][index] = y[i];
                    }

                    this.properties.categories.value = categories;
                    this.properties.series.value = series;
                }
            },

//            setParameters: function(params)
//            {
//                this._component.title = params['title'];
//                this._component.description = params['description'];
//
//                var chart = $(this._component.$.charts.$.container).highcharts();
//
//                chart.setTitle({text: params['title']});
//                chart.xAxis[0].setTitle({text: params['x-axis-label']});
//                chart.yAxis[0].setTitle({text: params['y-axis-label']});
//
//                chart.tooltip.options.formatter = function() {
//                    return this.x + '<br/><br/><span style="fill:#7cb5ec" x="8" dy="15">●</span> ' + this.series.name + ': <b>' + this.y + ' ' + params['suffix'] + '</b>';
//                }
//
//                //theme default
//                Highcharts.setOptions(Highcharts[params['theme']]);
//
//                this._component.stack = params['stack'];
//            }

        };

        var HighchartsComponentBehavior = $.extend(true, {}, BaseDataletBehavior, WorkcycleBehavior, AjaxJsonAlasqlBehavior, HighchartsBehavior);

        HighchartsDatalet = Polymer({
            is : 'highcharts-datalet'
        });
    </script>

</dom-module>