1 | import { EventEmitter, Component, ChangeDetectionStrategy, ViewEncapsulation, ElementRef, Input, Output, NgModule } from '@angular/core';
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2 | import { CommonModule } from '@angular/common';
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3 | import * as Chart from 'chart.js';
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4 |
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5 | class UIChart {
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6 | constructor(el) {
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7 | this.el = el;
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8 | this.plugins = [];
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9 | this.responsive = true;
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10 | this.onDataSelect = new EventEmitter();
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11 | this._options = {};
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12 | }
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13 | get data() {
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14 | return this._data;
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15 | }
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16 | set data(val) {
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17 | this._data = val;
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18 | this.reinit();
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19 | }
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20 | get options() {
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21 | return this._options;
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22 | }
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23 | set options(val) {
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24 | this._options = val;
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25 | this.reinit();
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26 | }
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27 | ngAfterViewInit() {
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28 | this.initChart();
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29 | this.initialized = true;
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30 | }
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31 | onCanvasClick(event) {
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32 | if (this.chart) {
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33 | let element = this.chart.getElementAtEvent(event);
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34 | let dataset = this.chart.getDatasetAtEvent(event);
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35 | if (element && element[0] && dataset) {
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36 | this.onDataSelect.emit({ originalEvent: event, element: element[0], dataset: dataset });
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37 | }
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38 | }
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39 | }
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40 | initChart() {
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41 | let opts = this.options || {};
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42 | opts.responsive = this.responsive;
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43 |
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44 | if (opts.responsive && (this.height || this.width)) {
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45 | opts.maintainAspectRatio = false;
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46 | }
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47 | this.chart = new Chart(this.el.nativeElement.children[0].children[0], {
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48 | type: this.type,
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49 | data: this.data,
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50 | options: this.options,
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51 | plugins: this.plugins
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52 | });
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53 | }
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54 | getCanvas() {
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55 | return this.el.nativeElement.children[0].children[0];
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56 | }
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57 | getBase64Image() {
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58 | return this.chart.toBase64Image();
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59 | }
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60 | generateLegend() {
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61 | if (this.chart) {
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62 | return this.chart.generateLegend();
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63 | }
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64 | }
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65 | refresh() {
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66 | if (this.chart) {
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67 | this.chart.update();
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68 | }
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69 | }
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70 | reinit() {
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71 | if (this.chart) {
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72 | this.chart.destroy();
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73 | this.initChart();
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74 | }
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75 | }
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76 | ngOnDestroy() {
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77 | if (this.chart) {
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78 | this.chart.destroy();
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79 | this.initialized = false;
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80 | this.chart = null;
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81 | }
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82 | }
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83 | }
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84 | UIChart.decorators = [
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85 | { type: Component, args: [{
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86 | selector: 'p-chart',
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87 | template: `
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88 | <div style="position:relative" [style.width]="responsive && !width ? null : width" [style.height]="responsive && !height ? null : height">
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89 | <canvas [attr.width]="responsive && !width ? null : width" [attr.height]="responsive && !height ? null : height" (click)="onCanvasClick($event)"></canvas>
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90 | </div>
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91 | `,
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92 | changeDetection: ChangeDetectionStrategy.OnPush,
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93 | encapsulation: ViewEncapsulation.None
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94 | },] }
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95 | ];
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96 | UIChart.ctorParameters = () => [
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97 | { type: ElementRef }
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98 | ];
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99 | UIChart.propDecorators = {
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100 | type: [{ type: Input }],
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101 | plugins: [{ type: Input }],
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102 | width: [{ type: Input }],
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103 | height: [{ type: Input }],
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104 | responsive: [{ type: Input }],
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105 | onDataSelect: [{ type: Output }],
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106 | data: [{ type: Input }],
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107 | options: [{ type: Input }]
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108 | };
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109 | class ChartModule {
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110 | }
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111 | ChartModule.decorators = [
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112 | { type: NgModule, args: [{
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113 | imports: [CommonModule],
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114 | exports: [UIChart],
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115 | declarations: [UIChart]
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116 | },] }
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117 | ];
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118 |
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119 |
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120 |
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121 |
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122 |
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123 | export { ChartModule, UIChart };
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124 |
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