add documentation for chart component

docs/en/UI/Angular/Chart-Component.md

@@ -0,0 +1,250 @@
+# Chart Component
+
+ABP Chart component exposed by `@abp/ng.components/chart.js` is based on [`charts.js`](https://www.chartjs.org/) v3+. You don't need to install the `chart.js` package. Since the `@abp/ng.components` is dependent on the `chart.js`, the package is already installed in your project.
+
+> Chart component loads `chart.js` script lazy. So it does not increase the bundle size.
+
+## How to Use
+
+First of all, need to import the `ChartModule` to your feature module as follows:
+
+```ts
+// your-feature.module.ts
+
+import { ChartModule } from '@abp/ng.components/chart.js';
+import { ChartDemoComponent } from './chart-demo.component';
+
+@NgModule({
+  imports: [
+    ChartModule,
+    // ...
+  ],
+  declarations: [ChartDemoComponent],
+  // ...
+})
+export class YourFeatureModule {}
+```
+
+Then, `abp-chart` component can be used:
+
+```ts
+// chart-demo.component.ts
+
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-chart-demo',
+  template: ` <abp-chart type="pie" [data]="data"></abp-chart> `,
+})
+export class ChartDemoComponent {
+  data = {
+    labels: ['Data 1', 'Data 2', 'Data 3'],
+    datasets: [
+      {
+        label: 'Dataset 1',
+        data: [40, 15, 45],
+        backgroundColor: ['#ff7675', '#fdcb6e', '#0984e3'],
+      },
+    ],
+  };
+}
+```
+
+> **Important Note**: Changing the data without creating a new data instance does not trigger change detection. In order to chart to redraw itself, a new data object needs to be created.
+
+See the result:
+
+![pie-chart](./images/pie-chart.png)
+
+## Examples
+
+### Doughnut
+
+```ts
+import { getRandomBackgroundColor } from '@abp/ng.components/chart.js';
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-chart-demo',
+  template: `
+    <abp-chart
+      type="doughnut"
+      [data]="data"
+      [options]="options"
+      width="400px"
+      height="400px"
+    ></abp-chart>
+  `,
+})
+export class ChartDemoComponent {
+  data = {
+    labels: ['Data 1', 'Data 2', 'Data 3'],
+    datasets: [
+      {
+        label: 'Dataset 1',
+        data: [40, 15, 45],
+        backgroundColor: getRandomBackgroundColor(3),
+      },
+    ],
+  };
+
+  options = {
+    plugins: {
+      title: {
+        display: true,
+        text: 'Doughnut Chart',
+        fontSize: 16,
+      },
+      legend: {
+        position: 'bottom',
+      },
+    },
+  };
+}
+```
+
+Result:
+
+![Doughnut Chart](./images/doughnut-chart.png)
+
+### Bar
+
+```ts
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-chart-demo',
+  template: `
+    <abp-chart
+      type="bar"
+      [data]="data"
+      width="400px"
+      height="400px"
+    ></abp-chart>
+  `,
+})
+export class ChartDemoComponent {
+  data = {
+    labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
+    datasets: [
+      {
+        label: 'First dataset',
+        backgroundColor: '#42A5F5',
+        data: [65, 59, 80, 81, 56, 55, 40],
+      },
+      {
+        label: 'Second dataset',
+        backgroundColor: '#FFA726',
+        data: [28, 48, 40, 19, 86, 27, 90],
+      },
+    ],
+  };
+}
+```
+
+Result:
+
+![Bar Chart](./images/bar-chart.png)
+
+### Radar
+
+```ts
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-chart-demo',
+  template: `
+    <abp-chart
+      type="radar"
+      [data]="data"
+      width="400px"
+      height="400px"
+    ></abp-chart>
+
+    <button class="btn btn-primary-outline mt-4" (click)="addDataset()">
+      Add dataset
+    </button>
+  `,
+})
+export class ChartDemoComponent {
+  data = {
+    labels: [
+      'January',
+      'February',
+      'March',
+      'April',
+      'May',
+      'June',
+      'July',
+      'August',
+      'September',
+      'October',
+      'November',
+      'December',
+    ],
+    datasets: [
+      {
+        label: 'Dataset 1',
+        backgroundColor: 'rgba(179,181,198,0.2)',
+        borderColor: 'rgba(179,181,198,1)',
+        data: [65, 59, 90, 81, 56, 55, 40, 35, 82, 51, 62, 95],
+      },
+      {
+        label: 'Dataset 2',
+        backgroundColor: 'rgba(255,99,132,0.2)',
+        borderColor: 'rgba(255,99,132,1)',
+        data: [28, 48, 40, 58, 96, 27, 100, 44, 85, 77, 71, 39],
+      },
+    ],
+  };
+
+  addDataset() {
+    this.data = {
+      ...this.data,
+      datasets: [
+        ...this.data.datasets,
+        {
+          label: 'Dataset 3',
+          backgroundColor: 'rgba(54,162,235,0.2)',
+          borderColor: 'rgba(54, 162, 235, 1)',
+          data: [90, 95, 98, 91, 99, 96, 89, 95, 98, 93, 92, 90],
+        },
+      ],
+    };
+  }
+}
+```
+
+Result:
+
+![Bar Chart](./images/radar-chart.gif)
+
+See the [`chart.js` samples](https://www.chartjs.org/docs/latest/samples) for more examples.
+
+## API
+
+### `abp-chart`
+
+#### Properties
+
+| Name            | Description                                                      | Type                    | Default |
+| --------------- | ---------------------------------------------------------------- | ----------------------- | ------- |
+| `[type]`        | Type of the chart.                                               | `string`                | null    |
+| `[data]`        | Chart data to display                                            | `any`                   | null    |
+| `[options]`     | Chart options to customize                                       | `any`                   | null    |
+| `[plugins]`     | Chart plugins to customize behaviour                             | `any`                   | null    |
+| `[width]`       | Witdh of the chart                                               | `string`                | null    |
+| `[height]`      | Height of the chart                                              | `string`                | null    |
+| `[responsive]`  | Whether the chart is responsive                                  | `boolean`               | true    |
+| `(dataSelect)`  | A callback that executes when an element on the chart is clicked | `EventEmitter<any>`     | -       |
+| `(initialized)` | A callback that executes when the chart is initialized           | `EventEmitter<boolean>` | -       |
+
+#### Methods
+
+| Name             | Description                                                         | Parameters |
+| ---------------- | ------------------------------------------------------------------- | ---------- |
+| `refresh`        | Redraws the chart                                                   | -          |
+| `reinit`         | Destroys the chart then creates it again                            | -          |
+| `getBase64Image` | Returns a base 64 encoded string of the chart in it's current state | -          |
+| `generateLegend` | Returns an HTML string of a legend for the chart                    | -          |
+| `getCanvas`      | Returns the canvas HTML element                                     | -          |

docs/en/docs-nav.json

@@ -1079,6 +1079,10 @@
                 {
                   "text": "Page",
                   "path": "UI/Angular/Page-Component.md"
+                },
+                {
+                  "text": "Chart",
+                  "path": "UI/Angular/Chart-Component.md"
                 }
               ]
             }