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Viewing file: Select action/file-type: /** * Chart type enumerations */ var ChartType = { LINE : 'line', SPLINE : 'spline', AREA : 'area', BAR : 'bar', COLUMN : 'column', PIE : 'pie', TIMELINE: 'timeline', SCATTER: 'scatter' }; /** * Abstract chart factory which defines the contract for chart factories */ var ChartFactory = function () { }; ChartFactory.prototype = { createChart : function (type, options) { throw new Error("createChart must be implemented by a subclass"); } }; /** * Abstract chart which defines the contract for charts * * @param elementId * id of the div element the chart is drawn in */ var Chart = function (elementId) { this.elementId = elementId; }; Chart.prototype = { draw : function (data, options) { throw new Error("draw must be implemented by a subclass"); }, redraw : function (options) { throw new Error("redraw must be implemented by a subclass"); }, destroy : function () { throw new Error("destroy must be implemented by a subclass"); } }; /** * Abstract representation of charts that operates on DataTable where,<br /> * <ul> * <li>First column provides index to the data.</li> * <li>Each subsequent columns are of type * <code>ColumnType.NUMBER<code> and represents a data series.</li> * </ul> * Line chart, area chart, bar chart, column chart are typical examples. * * @param elementId * id of the div element the chart is drawn in */ var BaseChart = function (elementId) { Chart.call(this, elementId); }; BaseChart.prototype = new Chart(); BaseChart.prototype.constructor = BaseChart; BaseChart.prototype.validateColumns = function (dataTable) { var columns = dataTable.getColumns(); if (columns.length < 2) { throw new Error("Minimum of two columns are required for this chart"); } for (var i = 1; i < columns.length; i++) { if (columns[i].type != ColumnType.NUMBER) { throw new Error("Column " + (i + 1) + " should be of type 'Number'"); } } return true; }; /** * Abstract pie chart * * @param elementId * id of the div element the chart is drawn in */ var PieChart = function (elementId) { BaseChart.call(this, elementId); }; PieChart.prototype = new BaseChart(); PieChart.prototype.constructor = PieChart; PieChart.prototype.validateColumns = function (dataTable) { var columns = dataTable.getColumns(); if (columns.length > 2) { throw new Error("Pie charts can draw only one series"); } return BaseChart.prototype.validateColumns.call(this, dataTable); }; /** * Abstract timeline chart * * @param elementId * id of the div element the chart is drawn in */ var TimelineChart = function (elementId) { BaseChart.call(this, elementId); }; TimelineChart.prototype = new BaseChart(); TimelineChart.prototype.constructor = TimelineChart; TimelineChart.prototype.validateColumns = function (dataTable) { var result = BaseChart.prototype.validateColumns.call(this, dataTable); if (result) { var columns = dataTable.getColumns(); if (columns[0].type != ColumnType.DATE) { throw new Error("First column of timeline chart need to be a date column"); } } return result; }; /** * Abstract scatter chart * * @param elementId * id of the div element the chart is drawn in */ var ScatterChart = function(elementId) { BaseChart.call(this, elementId); }; ScatterChart.prototype = new BaseChart(); ScatterChart.prototype.constructor = ScatterChart; ScatterChart.prototype.validateColumns = function (dataTable) { var result = BaseChart.prototype.validateColumns.call(this, dataTable); if (result) { var columns = dataTable.getColumns(); if (columns[0].type != ColumnType.NUMBER) { throw new Error("First column of scatter chart need to be a numeric column"); } } return result; }; /** * The data table contains column information and data for the chart. */ var DataTable = function () { var columns = []; var data = null; this.addColumn = function (type, name) { columns.push({ 'type' : type, 'name' : name }); }; this.getColumns = function () { return columns; }; this.setData = function (rows) { data = rows; fillMissingValues(); }; this.getData = function () { return data; }; var fillMissingValues = function () { if (columns.length === 0) { throw new Error("Set columns first"); } var row; for (var i = 0; i < data.length; i++) { row = data[i]; if (row.length > columns.length) { row.splice(columns.length - 1, row.length - columns.length); } else if (row.length < columns.length) { for (var j = row.length; j < columns.length; j++) { row.push(null); } } } }; }; /** * Column type enumeration */ var ColumnType = { STRING : 'string', NUMBER : 'number', BOOLEAN : 'boolean', DATE : 'date' }; /******************************************************************************* * JQPlot specific code ******************************************************************************/ /** * Chart factory that returns JQPlotCharts */ var JQPlotChartFactory = function () { }; JQPlotChartFactory.prototype = new ChartFactory(); JQPlotChartFactory.prototype.createChart = function (type, elementId) { var chart = null; switch (type) { case ChartType.LINE: chart = new JQPlotLineChart(elementId); break; case ChartType.SPLINE: chart = new JQPlotSplineChart(elementId); break; case ChartType.TIMELINE: chart = new JQPlotTimelineChart(elementId); break; case ChartType.AREA: chart = new JQPlotAreaChart(elementId); break; case ChartType.BAR: chart = new JQPlotBarChart(elementId); break; case ChartType.COLUMN: chart = new JQPlotColumnChart(elementId); break; case ChartType.PIE: chart = new JQPlotPieChart(elementId); break; case ChartType.SCATTER: chart = new JQPlotScatterChart(elementId); break; } return chart; }; /** * Abstract JQplot chart * * @param elementId * id of the div element the chart is drawn in */ var JQPlotChart = function (elementId) { Chart.call(this, elementId); this.plot = null; this.validator; }; JQPlotChart.prototype = new Chart(); JQPlotChart.prototype.constructor = JQPlotChart; JQPlotChart.prototype.draw = function (data, options) { if (this.validator.validateColumns(data)) { this.plot = $.jqplot(this.elementId, this.prepareData(data), this .populateOptions(data, options)); } }; JQPlotChart.prototype.destroy = function () { if (this.plot !== null) { this.plot.destroy(); } }; JQPlotChart.prototype.redraw = function (options) { if (this.plot !== null) { this.plot.replot(options); } }; JQPlotChart.prototype.populateOptions = function (dataTable, options) { throw new Error("populateOptions must be implemented by a subclass"); }; JQPlotChart.prototype.prepareData = function (dataTable) { throw new Error("prepareData must be implemented by a subclass"); }; /** * JQPlot line chart * * @param elementId * id of the div element the chart is drawn in */ var JQPlotLineChart = function (elementId) { JQPlotChart.call(this, elementId); this.validator = BaseChart.prototype; }; JQPlotLineChart.prototype = new JQPlotChart(); JQPlotLineChart.prototype.constructor = JQPlotLineChart; JQPlotLineChart.prototype.populateOptions = function (dataTable, options) { var columns = dataTable.getColumns(); var optional = { axes : { xaxis : { label : columns[0].name, renderer : $.jqplot.CategoryAxisRenderer, ticks : [] }, yaxis : { label : (columns.length == 2 ? columns[1].name : 'Values'), labelRenderer : $.jqplot.CanvasAxisLabelRenderer } }, highlighter: { show: true, tooltipAxes: 'y', formatString:'%d' }, series : [] }; $.extend(true, optional, options); if (optional.series.length === 0) { for (var i = 1; i < columns.length; i++) { optional.series.push({ label : columns[i].name.toString() }); } } if (optional.axes.xaxis.ticks.length === 0) { var data = dataTable.getData(); for (var i = 0; i < data.length; i++) { optional.axes.xaxis.ticks.push(data[i][0].toString()); } } return optional; }; JQPlotLineChart.prototype.prepareData = function (dataTable) { var data = dataTable.getData(), row; var retData = [], retRow; for (var i = 0; i < data.length; i++) { row = data[i]; for (var j = 1; j < row.length; j++) { retRow = retData[j - 1]; if (retRow === undefined) { retRow = []; retData[j - 1] = retRow; } retRow.push(row[j]); } } return retData; }; /** * JQPlot spline chart * * @param elementId * id of the div element the chart is drawn in */ var JQPlotSplineChart = function (elementId) { JQPlotLineChart.call(this, elementId); }; JQPlotSplineChart.prototype = new JQPlotLineChart(); JQPlotSplineChart.prototype.constructor = JQPlotSplineChart; JQPlotSplineChart.prototype.populateOptions = function (dataTable, options) { var optional = {}; var opt = JQPlotLineChart.prototype.populateOptions.call(this, dataTable, options); var compulsory = { seriesDefaults : { rendererOptions : { smooth : true } } }; $.extend(true, optional, opt, compulsory); return optional; }; /** * JQPlot scatter chart * * @param elementId * id of the div element the chart is drawn in */ var JQPlotScatterChart = function (elementId) { JQPlotChart.call(this, elementId); this.validator = ScatterChart.prototype; }; JQPlotScatterChart.prototype = new JQPlotChart(); JQPlotScatterChart.prototype.constructor = JQPlotScatterChart; JQPlotScatterChart.prototype.populateOptions = function (dataTable, options) { var columns = dataTable.getColumns(); var optional = { axes : { xaxis : { label : columns[0].name }, yaxis : { label : (columns.length == 2 ? columns[1].name : 'Values'), labelRenderer : $.jqplot.CanvasAxisLabelRenderer } }, highlighter: { show: true, tooltipAxes: 'xy', formatString:'%d, %d' }, series : [] }; for (var i = 1; i < columns.length; i++) { optional.series.push({ label : columns[i].name.toString() }); } var compulsory = { seriesDefaults : { showLine: false, markerOptions: { size: 7, style: "x" } } }; $.extend(true, optional, options, compulsory); return optional; }; JQPlotScatterChart.prototype.prepareData = function (dataTable) { var data = dataTable.getData(), row; var retData = [], retRow; for (var i = 0; i < data.length; i++) { row = data[i]; if (row[0]) { for (var j = 1; j < row.length; j++) { retRow = retData[j - 1]; if (retRow === undefined) { retRow = []; retData[j - 1] = retRow; } retRow.push([row[0], row[j]]); } } } return retData; }; /** * JQPlot timeline chart * * @param elementId * id of the div element the chart is drawn in */ var JQPlotTimelineChart = function (elementId) { JQPlotLineChart.call(this, elementId); this.validator = TimelineChart.prototype; }; JQPlotTimelineChart.prototype = new JQPlotLineChart(); JQPlotTimelineChart.prototype.constructor = JQPlotTimelineChart; JQPlotTimelineChart.prototype.populateOptions = function (dataTable, options) { var optional = { axes : { xaxis : { tickOptions : { formatString: '%b %#d, %y' } } } }; var opt = JQPlotLineChart.prototype.populateOptions.call(this, dataTable, options); var compulsory = { axes : { xaxis : { renderer : $.jqplot.DateAxisRenderer } } }; $.extend(true, optional, opt, compulsory); return optional; }; JQPlotTimelineChart.prototype.prepareData = function (dataTable) { var data = dataTable.getData(), row, d; var retData = [], retRow; for (var i = 0; i < data.length; i++) { row = data[i]; d = row[0]; for (var j = 1; j < row.length; j++) { retRow = retData[j - 1]; if (retRow === undefined) { retRow = []; retData[j - 1] = retRow; } if (d !== null) { retRow.push([d.getTime(), row[j]]); } } } return retData; }; /** * JQPlot area chart * * @param elementId * id of the div element the chart is drawn in */ var JQPlotAreaChart = function (elementId) { JQPlotLineChart.call(this, elementId); }; JQPlotAreaChart.prototype = new JQPlotLineChart(); JQPlotAreaChart.prototype.constructor = JQPlotAreaChart; JQPlotAreaChart.prototype.populateOptions = function (dataTable, options) { var optional = { seriesDefaults : { fillToZero : true } }; var opt = JQPlotLineChart.prototype.populateOptions.call(this, dataTable, options); var compulsory = { seriesDefaults : { fill : true } }; $.extend(true, optional, opt, compulsory); return optional; }; /** * JQPlot column chart * * @param elementId * id of the div element the chart is drawn in */ var JQPlotColumnChart = function (elementId) { JQPlotLineChart.call(this, elementId); }; JQPlotColumnChart.prototype = new JQPlotLineChart(); JQPlotColumnChart.prototype.constructor = JQPlotColumnChart; JQPlotColumnChart.prototype.populateOptions = function (dataTable, options) { var optional = { seriesDefaults : { fillToZero : true } }; var opt = JQPlotLineChart.prototype.populateOptions.call(this, dataTable, options); var compulsory = { seriesDefaults : { renderer : $.jqplot.BarRenderer } }; $.extend(true, optional, opt, compulsory); return optional; }; /** * JQPlot bar chart * * @param elementId * id of the div element the chart is drawn in */ var JQPlotBarChart = function (elementId) { JQPlotLineChart.call(this, elementId); }; JQPlotBarChart.prototype = new JQPlotLineChart(); JQPlotBarChart.prototype.constructor = JQPlotBarChart; JQPlotBarChart.prototype.populateOptions = function (dataTable, options) { var columns = dataTable.getColumns(); var optional = { axes : { yaxis : { label : columns[0].name, labelRenderer : $.jqplot.CanvasAxisLabelRenderer, renderer : $.jqplot.CategoryAxisRenderer, ticks : [] }, xaxis : { label : (columns.length == 2 ? columns[1].name : 'Values'), labelRenderer : $.jqplot.CanvasAxisLabelRenderer } }, highlighter: { show: true, tooltipAxes: 'x', formatString:'%d' }, series : [], seriesDefaults : { fillToZero : true } }; var compulsory = { seriesDefaults : { renderer : $.jqplot.BarRenderer, rendererOptions : { barDirection : 'horizontal' } } }; $.extend(true, optional, options, compulsory); if (optional.axes.yaxis.ticks.length === 0) { var data = dataTable.getData(); for (var i = 0; i < data.length; i++) { optional.axes.yaxis.ticks.push(data[i][0].toString()); } } if (optional.series.length === 0) { for (var i = 1; i < columns.length; i++) { optional.series.push({ label : columns[i].name.toString() }); } } return optional; }; /** * JQPlot pie chart * * @param elementId * id of the div element the chart is drawn in */ var JQPlotPieChart = function (elementId) { JQPlotChart.call(this, elementId); this.validator = PieChart.prototype; }; JQPlotPieChart.prototype = new JQPlotChart(); JQPlotPieChart.prototype.constructor = JQPlotPieChart; JQPlotPieChart.prototype.populateOptions = function (dataTable, options) { var optional = { highlighter: { show: true, tooltipAxes: 'xy', formatString:'%s, %d', useAxesFormatters: false } }; var compulsory = { seriesDefaults : { renderer : $.jqplot.PieRenderer } }; $.extend(true, optional, options, compulsory); return optional; }; JQPlotPieChart.prototype.prepareData = function (dataTable) { var data = dataTable.getData(), row; var retData = []; for (var i = 0; i < data.length; i++) { row = data[i]; retData.push([ row[0], row[1] ]); } return [ retData ]; }; |
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