Angular 2+ elegant way to intercept Command+S

Question

Trying to implement a shortcut key combination for Command+S to save a form.

I\'ve read this - https://angular.io/guide/user-input, but it does not say anything about me

Answer 1

UPDATE

To stop the save dialog of the browser from opening, we must use the keydown event instead of keyup and call the function $event.preventDefault();. Updated code below:

  onKeyDown($event): void {
    // Detect platform
    if(navigator.platform.match('Mac')){
        this.handleMacKeyEvents($event);
    }
    else {
        this.handleWindowsKeyEvents($event); 
    }
  }

  handleMacKeyEvents($event) {
    // MetaKey documentation
    // https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/metaKey
    let charCode = String.fromCharCode($event.which).toLowerCase();
    if ($event.metaKey && charCode === 's') {
        // Action on Cmd + S
        $event.preventDefault();
    } 
  }

  handleWindowsKeyEvents($event) {
    let charCode = String.fromCharCode($event.which).toLowerCase();
    if ($event.ctrlKey && charCode === 's') {
        // Action on Ctrl + S
        $event.preventDefault();
    } 
  }

Then bind this method to the (keydown) event in your div:

Updated PLUNKER DEMO

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ORIGINAL ANSWER

Here is an idea, how about detecting the event in you class:

  onKeyUp($event): void {
    // Detect platform
    if(navigator.platform.match('Mac')){
        this.handleMacKeyEvents($event);
    }
    else {
        this.handleWindowsKeyEvents($event); 
    }
  }

  handleMacKeyEvents($event) {
    // MetaKey documentation
    // https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/metaKey
    let charCode = String.fromCharCode($event.which).toLowerCase();
    if ($event.metaKey && charCode === 's') {
        // Action on Cmd + S
        $event.preventDefault();
    } 
  }

  handleWindowsKeyEvents($event) {
    let charCode = String.fromCharCode($event.which).toLowerCase();
    if ($event.ctrlKey && charCode === 's') {
        // Action on Ctrl + S
        $event.preventDefault();
    } 
  }

Then bind this method to the (keyup) event in your div:

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Here is a plunker link: PLUNKER DEMO