Detect Ctrl + C and Ctrl + V in an input from browsers

Angular provides high level API for listening to key press combinations. Check out the following example.

ctrl-keys.directive.ts

import { Directive, Output, EventEmitter, HostListener } from '@angular/core';

@Directive({
  selector: '[ctrlKeys]',
})
export class CtrlKeysDirective  {
  @Output() ctrlV = new EventEmitter();
  @Output() ctrlC = new EventEmitter();

  @HostListener('keydown.control.v') onCtrlV() {
    this.ctrlV.emit();
  }

  @HostListener('keydown.control.c') onCtrlC() {
    this.ctrlC.emit();
  }
}

Usage

import { Component } from '@angular/core';

@Component({
  selector: 'my-app',
  template: `
  <input ctrlKeys (ctrlV)="onCtrlV()" (ctrlC)="onCtrlC()" >
  `,
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  onCtrlV() {
    console.log('ctrlV pressed')
  }

  onCtrlC() {
    console.log('ctrlC pressed')
  }
}

Live demo

Just add this to any component. When the user performs the key combination Ctrl +s it will print 'Save Performed'

@HostListener('document:keydown.control.s', ['$event']) onKeydownHandler(event: KeyboardEvent) {
    console.log('Save Performed');
    event.preventDefault();
}

If you want Ctrl +v replace the 's' in 'document:keydown.control.s' with 'v'.

Instead of monitoring the key events for copy and paste commands, I suggest handling the clipboard events (copy, cut, paste). In addition to taking care of the various shortcuts used on different platforms, it also detects the clipboard operations initiated with the context menu. Please note that the paste event can be cancelled with e.preventDefault(). You can see the code at work in this stackblitz.

@HostListener('copy', ['$event'])
onCopy(e: ClipboardEvent) {
  ...
}

@HostListener('paste', ['$event'])
onPaste(e: ClipboardEvent) {
  let clipboardData = e.clipboardData || window.clipboardData;
  let pastedText = clipboardData.getData('text');
  ...
}

You simply can do who : for information this code manage all mac user who user CMD instead of ctrl

@HostListener('window:keydown',['$event'])
onKeyPress($event: KeyboardEvent) {
    if(($event.ctrlKey || $event.metaKey) && $event.keyCode == 67)
        console.log('CTRL + C');
    if(($event.ctrlKey || $event.metaKey) && $event.keyCode == 86)
        console.log('CTRL +  V');
}

If you want to detect other kind of shortcut :

• event.ctrlKey
• event.altKey
• event.metaKey (Aka Cmd for mac user)

Online sample

--- UPDATE AFTER COMMENT ---

You may can do something like this

  ngOnInit() {
        this.bindKeypressEvent().subscribe(($event: KeyboardEvent) => this.onKeyPress($event));
    }

    onKeyPress($event: KeyboardEvent) {
        if(($event.ctrlKey || $event.metaKey) && $event.keyCode == 67)
            console.log('CTRL + C');
        if(($event.ctrlKey || $event.metaKey) && $event.keyCode == 86)
            console.log('CTRL +  V');
    }

    private bindKeypressEvent(): Observable<KeyboardEvent> {
        const eventsType$ = [
            fromEvent(window, 'keypress'),
            fromEvent(window, 'keydown')
        ];
        // we merge all kind of event as one observable.
        return merge(...eventsType$)
            .pipe(
                // We prevent multiple next by wait 10ms before to next value.
                debounce(() => timer(10)),
                // We map answer to KeyboardEvent, typescript strong typing...
                map(state => (state as KeyboardEvent))
            );
    }

or if is not working, just :

private bindKeypress(): Observable<KeyboardEvent> {
    const typeOfEvent = this.deviceService.getKeybordEvent();
    fromEvent(window, typeOfEvent)
    .pipe(
        // We map answer to KeyboardEvent, typescript strong typing...
        map(state => (state as KeyboardEvent))
    );
}

Where this.deviceService.getKeybordEvent(); is method who return type of event base on User Agent. massive list of user agent can be find here