import { EventEmitter, Component, ChangeDetectionStrategy, ViewEncapsulation, ElementRef, Input, Output, NgModule } from '@angular/core'; import { CommonModule } from '@angular/common'; import * as Chart from 'chart.js'; class UIChart { constructor(el) { this.el = el; this.plugins = []; this.responsive = true; this.onDataSelect = new EventEmitter(); this._options = {}; } get data() { return this._data; } set data(val) { this._data = val; this.reinit(); } get options() { return this._options; } set options(val) { this._options = val; this.reinit(); } ngAfterViewInit() { this.initChart(); this.initialized = true; } onCanvasClick(event) { if (this.chart) { let element = this.chart.getElementAtEvent(event); let dataset = this.chart.getDatasetAtEvent(event); if (element && element[0] && dataset) { this.onDataSelect.emit({ originalEvent: event, element: element[0], dataset: dataset }); } } } initChart() { let opts = this.options || {}; opts.responsive = this.responsive; // allows chart to resize in responsive mode if (opts.responsive && (this.height || this.width)) { opts.maintainAspectRatio = false; } this.chart = new Chart(this.el.nativeElement.children[0].children[0], { type: this.type, data: this.data, options: this.options, plugins: this.plugins }); } getCanvas() { return this.el.nativeElement.children[0].children[0]; } getBase64Image() { return this.chart.toBase64Image(); } generateLegend() { if (this.chart) { return this.chart.generateLegend(); } } refresh() { if (this.chart) { this.chart.update(); } } reinit() { if (this.chart) { this.chart.destroy(); this.initChart(); } } ngOnDestroy() { if (this.chart) { this.chart.destroy(); this.initialized = false; this.chart = null; } } } UIChart.decorators = [ { type: Component, args: [{ selector: 'p-chart', template: `