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Chart : require('chart.js'));\n } else if (typeof define === 'function' && define.amd) {\n // AMD. 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customOptions) {\n customOptions = type;\n options = angular.merge(options, customOptions);\n } else {\n // Set options for the specific chart\n options[type] = angular.merge(options[type] || {}, customOptions);\n }\n\n angular.merge(ChartJs.Chart.defaults, options);\n };\n\n this.$get = function () {\n return ChartJs;\n };\n }\n\n function ChartJsFactory (ChartJs, $timeout) {\n return function chart (type) {\n return {\n restrict: 'CA',\n scope: {\n chartGetColor: '=?',\n chartType: '=',\n chartData: '=?',\n chartLabels: '=?',\n chartOptions: '=?',\n chartSeries: '=?',\n chartColors: '=?',\n chartClick: '=?',\n chartHover: '=?',\n chartDatasetOverride: '=?'\n },\n link: function (scope, elem/*, attrs */) {\n if (useExcanvas) window.G_vmlCanvasManager.initElement(elem[0]);\n\n // Order of setting \"watch\" matter\n scope.$watch('chartData', watchData, true);\n scope.$watch('chartSeries', watchOther, true);\n scope.$watch('chartLabels', watchOther, true);\n scope.$watch('chartOptions', watchOther, true);\n scope.$watch('chartColors', watchOther, true);\n scope.$watch('chartDatasetOverride', watchOther, true);\n scope.$watch('chartType', watchType, false);\n\n scope.$on('$destroy', function () {\n destroyChart(scope);\n });\n\n scope.$on('$resize', function () {\n if (scope.chart) scope.chart.resize();\n });\n\n function watchData (newVal, oldVal) {\n if (! newVal || ! newVal.length || (Array.isArray(newVal[0]) && ! newVal[0].length)) {\n destroyChart(scope);\n return;\n }\n var chartType = type || scope.chartType;\n if (! chartType) return;\n\n if (scope.chart && canUpdateChart(newVal, oldVal))\n return updateChart(newVal, scope);\n\n createChart(chartType, scope, elem);\n }\n\n function watchOther (newVal, oldVal) {\n if (isEmpty(newVal)) return;\n if (angular.equals(newVal, oldVal)) return;\n var chartType = type || scope.chartType;\n if (! chartType) return;\n\n // chart.update() doesn't work for series and labels\n // so we have to re-create the chart entirely\n createChart(chartType, scope, elem);\n }\n\n function watchType (newVal, oldVal) {\n if (isEmpty(newVal)) return;\n if (angular.equals(newVal, oldVal)) return;\n createChart(newVal, scope, elem);\n }\n }\n };\n };\n\n function createChart (type, scope, elem) {\n var options = getChartOptions(type, scope);\n if (! hasData(scope) || ! canDisplay(type, scope, elem, options)) return;\n\n var cvs = elem[0];\n var ctx = cvs.getContext('2d');\n\n scope.chartGetColor = getChartColorFn(scope);\n var data = getChartData(type, scope);\n // Destroy old chart if it exists to avoid ghost charts issue\n // https://github.com/jtblin/angular-chart.js/issues/187\n destroyChart(scope);\n\n scope.chart = new ChartJs.Chart(ctx, {\n type: type,\n data: data,\n options: options\n });\n scope.$emit('chart-create', scope.chart);\n bindEvents(cvs, scope);\n }\n\n function canUpdateChart (newVal, oldVal) {\n if (newVal && oldVal && newVal.length && oldVal.length) {\n return Array.isArray(newVal[0]) ?\n newVal.length === oldVal.length && newVal.every(function (element, index) {\n return element.length === oldVal[index].length; }) :\n oldVal.reduce(sum, 0) > 0 ? newVal.length === oldVal.length : false;\n }\n return false;\n }\n\n function sum (carry, val) {\n return carry + val;\n }\n\n function getEventHandler (scope, action, triggerOnlyOnChange) {\n var lastState = {\n point: void 0,\n points: void 0\n };\n return function (evt) {\n var atEvent = scope.chart.getElementAtEvent || scope.chart.getPointAtEvent;\n var atEvents = scope.chart.getElementsAtEvent || scope.chart.getPointsAtEvent;\n if (atEvents) {\n var points = atEvents.call(scope.chart, evt);\n var point = atEvent ? atEvent.call(scope.chart, evt)[0] : void 0;\n\n if (triggerOnlyOnChange === false ||\n (! angular.equals(lastState.points, points) && ! angular.equals(lastState.point, point))\n ) {\n lastState.point = point;\n lastState.points = points;\n scope[action](points, evt, point);\n }\n }\n };\n }\n\n function getColors (type, scope) {\n var colors = angular.copy(scope.chartColors ||\n ChartJs.getOptions(type).chartColors ||\n Chart.defaults.global.colors\n );\n var notEnoughColors = colors.length < scope.chartData.length;\n while (colors.length < scope.chartData.length) {\n colors.push(scope.chartGetColor());\n }\n // mutate colors in this case as we don't want\n // the colors to change on each refresh\n if (notEnoughColors) scope.chartColors = colors;\n return colors.map(convertColor);\n }\n\n function convertColor (color) {\n // Allows RGB and RGBA colors to be input as a string: e.g.: \"rgb(159,204,0)\", \"rgba(159,204,0, 0.5)\"\n if (typeof color === 'string' && color[0] === 'r') return getColor(rgbStringToRgb(color));\n // Allows hex colors to be input as a string.\n if (typeof color === 'string' && color[0] === '#') return getColor(hexToRgb(color.substr(1)));\n // Allows colors to be input as an object, bypassing getColor() entirely\n if (typeof color === 'object' && color !== null) return color;\n return getRandomColor();\n }\n\n function getRandomColor () {\n var color = [getRandomInt(0, 255), getRandomInt(0, 255), getRandomInt(0, 255)];\n return getColor(color);\n }\n\n function getColor (color) {\n var alpha = color[3] || 1;\n color = color.slice(0, 3);\n return {\n backgroundColor: rgba(color, 0.2),\n pointBackgroundColor: rgba(color, alpha),\n pointHoverBackgroundColor: rgba(color, 0.8),\n borderColor: rgba(color, alpha),\n pointBorderColor: '#fff',\n pointHoverBorderColor: rgba(color, alpha)\n };\n }\n\n function getRandomInt (min, max) {\n return Math.floor(Math.random() * (max - min + 1)) + min;\n }\n\n function rgba (color, alpha) {\n // rgba not supported by IE8\n return useExcanvas ? 'rgb(' + color.join(',') + ')' : 'rgba(' + color.concat(alpha).join(',') + ')';\n }\n\n // Credit: http://stackoverflow.com/a/11508164/1190235\n function hexToRgb (hex) {\n var bigint = parseInt(hex, 16),\n r = (bigint >> 16) & 255,\n g = (bigint >> 8) & 255,\n b = bigint & 255;\n\n return [r, g, b];\n }\n\n function rgbStringToRgb (color) {\n var match = color.match(/^rgba?\\(([\\d,.]+)\\)$/);\n if (! match) throw new Error('Cannot parse rgb value');\n color = match[1].split(',');\n return color.map(Number);\n }\n\n function hasData (scope) {\n return scope.chartData && scope.chartData.length;\n }\n\n function getChartColorFn (scope) {\n return typeof scope.chartGetColor === 'function' ? scope.chartGetColor : getRandomColor;\n }\n\n function getChartData (type, scope) {\n var colors = getColors(type, scope);\n return Array.isArray(scope.chartData[0]) ?\n getDataSets(scope.chartLabels, scope.chartData, scope.chartSeries || [], colors, scope.chartDatasetOverride) :\n getData(scope.chartLabels, scope.chartData, colors, scope.chartDatasetOverride);\n }\n\n function getDataSets (labels, data, series, colors, datasetOverride) {\n return {\n labels: labels,\n datasets: data.map(function (item, i) {\n var dataset = angular.extend({}, colors[i], {\n label: series[i],\n data: item\n });\n if (datasetOverride && datasetOverride.length >= i) {\n angular.merge(dataset, datasetOverride[i]);\n }\n return dataset;\n })\n };\n }\n\n function getData (labels, data, colors, datasetOverride) {\n var dataset = {\n labels: labels,\n datasets: [{\n data: data,\n backgroundColor: colors.map(function (color) {\n return color.pointBackgroundColor;\n }),\n hoverBackgroundColor: colors.map(function (color) {\n return color.backgroundColor;\n })\n }]\n };\n if (datasetOverride) {\n angular.merge(dataset.datasets[0], datasetOverride);\n }\n return dataset;\n }\n\n function getChartOptions (type, scope) {\n return angular.extend({}, ChartJs.getOptions(type), scope.chartOptions);\n }\n\n function bindEvents (cvs, scope) {\n cvs.onclick = scope.chartClick ? getEventHandler(scope, 'chartClick', false) : angular.noop;\n cvs.onmousemove = scope.chartHover ? getEventHandler(scope, 'chartHover', true) : angular.noop;\n }\n\n function updateChart (values, scope) {\n if (Array.isArray(scope.chartData[0])) {\n scope.chart.data.datasets.forEach(function (dataset, i) {\n dataset.data = values[i];\n });\n } else {\n scope.chart.data.datasets[0].data = values;\n }\n\n scope.chart.update();\n scope.$emit('chart-update', scope.chart);\n }\n\n function isEmpty (value) {\n return ! value ||\n (Array.isArray(value) && ! value.length) ||\n (typeof value === 'object' && ! Object.keys(value).length);\n }\n\n function canDisplay (type, scope, elem, options) {\n // TODO: check parent?\n if (options.responsive && elem[0].clientHeight === 0) {\n $timeout(function () {\n createChart(type, scope, elem);\n }, 50, false);\n return false;\n }\n return true;\n }\n\n function destroyChart(scope) {\n if(! scope.chart) return;\n scope.chart.destroy();\n scope.$emit('chart-destroy', scope.chart);\n }\n }\n}));\n"]}
