Copy to Clipboard with Angular CDK

Introduction

The Angular CDK provides a convenient way to add copy-on-click functionality to your Angular applications. This can be useful for copying text, images, or other data to the user's clipboard.

Using the ngx-library

The ngx-library is a popular Angular library that provides a number of helpful directives, including a copy-to-clipboard directive. To use the ngx-library, you can install it from npm:

```bash npm install ngx-library --save ```

Once the ngx-library is installed, you can import the ClipboardModule into your Angular module:

```typescript import { ClipboardModule } from 'ngx-library'; @NgModule({ imports: [ ClipboardModule ], declarations: [ // Your components ] }) export class AppModule { } ```

You can then use the cdkCopyToClipboard directive to add copy-on-click functionality to any element. For example:

```html ```

This will add a copy-on-click event to the button. When the user clicks the button, the text variable will be copied to the user's clipboard.

Avoiding dependencies

If you don't want to use the ngx-library, you can also create your own copy-to-clipboard directive. This is a bit more complex, but it gives you more control over the behavior of the directive.

To create your own copy-to-clipboard directive, you can start by creating a new directive class:

```typescript import { Directive, ElementRef } from '@angular/core'; @Directive({ selector: '[copy-to-clipboard]' }) export class CopyToClipboardDirective { constructor(private elementRef: ElementRef) { } @HostListener('click') onClick() { this.copyToClipboard(); } private copyToClipboard() { const text = this.elementRef.nativeElement.textContent; if (text) { try { navigator.clipboard.writeText(text); } catch (error) { console.error(error); } } } } ```

This directive will add a click event listener to the element that it is applied to. When the element is clicked, the copyToClipboard() method will be called.

The copyToClipboard() method uses the navigator.clipboard.writeText() method to copy the text content of the element to the user's clipboard. If the text is successfully copied, the method will return a Promise that resolves to true. Otherwise, the method will return a Promise that rejects with an error.

You can then use this directive in your Angular components, as follows:

```html ```

This will add a copy-on-click event to the button. When the user clicks the button, the text content of the button will be copied to the user's clipboard.

Conclusion

The Angular CDK provides a convenient way to add copy-on-click functionality to your Angular applications. You can use the ngx-library to add this functionality with minimal effort, or you can create your own copy-to-clipboard directive for more control over the behavior.