What is the most effective approach for handling user input delays with Async promises?

Question

What is the most effective approach for handling user input delays with Async promises?

New to Vue.js and currently exploring the following challenge:

I have a component named PopUp which can be displayed or hidden using functions of the same name.

My goal is for the popUp.show() function to return a promise that contains information about how the user closed the popUp (such as button press, clicking outside the popup, etc).

The main issue I'm encountering is figuring out how to efficiently wait for the closure information. Initially, I considered using a loop, but this approach seems inefficient and could potentially stall the entire program.

One idea I had was to implement something like this:

async show() {
  //Insert Show PopUp code
  return this.resolve()
}

hide() {
  //Insert hide code
  this.closed = true;
}

resolve() {
  while(!this.closed){}
  //insert build response object code
  return response
}

I'm wondering if there's a better way to listen for changes in a variable rather than employing a looping mechanism.

Appreciate any insights!

javascript typescript vue.js

Answer 1

Answer №1

In response to the feedback provided, it is advised that the function show() should be designed to return a Promise and then monitor 'click' events. Upon detecting a click on the specific element (such as the close button or outside the dialog), the resolve function should be executed.

The suggested pattern resembles the following:

function show() {

  // create and return a new Promise immediately
  return new Promise((resolve) => {

    // event listener for clicks
    const responder = (evt)  => {
      let target = evt.target;

      // remove the event listener and resolve when any of the dialog-closing elements are clicked
      if (target === one_of_the_dialog_closing_elements) {
        document.removeEventListener('click', responder);
        resolve(target);
      }
    };

    // set up the click event listener
    document.addEventListener("click", responder);
  });
}

Answer 2

In response to the feedback provided, it is advised that the function show() should be designed to return a Promise and then monitor 'click' events. Upon detecting a click on the specific element (such as the close button or outside the dialog), the resolve function should be executed.

The suggested pattern resembles the following:

function show() {

  // create and return a new Promise immediately
  return new Promise((resolve) => {

    // event listener for clicks
    const responder = (evt)  => {
      let target = evt.target;

      // remove the event listener and resolve when any of the dialog-closing elements are clicked
      if (target === one_of_the_dialog_closing_elements) {
        document.removeEventListener('click', responder);
        resolve(target);
      }
    };

    // set up the click event listener
    document.addEventListener("click", responder);
  });
}

Answer 3

Answer №2

A loop can be detrimental as it consumes CPU resources unnecessarily. Monitoring the status of closed using $watch is a possibility, but its reactivity remains uncertain and may not be required.

The appropriate methods to modify closed are through invoking hide and show functions. Here is a potential solution:


show() {
  if (this._resolvePopup)
    this._resolvePopup(); // handle multiple show() calls

  return new Promise(resolve => this._resolvePopup = resolve);
}

hide() {
  this.closed = true; // view-only access
  if (this._resolvePopup) {
    this._resolvePopup();
    this._resolvePopup = null;
  }
}

Answer 4

A loop can be detrimental as it consumes CPU resources unnecessarily. Monitoring the status of closed using $watch is a possibility, but its reactivity remains uncertain and may not be required.

The appropriate methods to modify closed are through invoking hide and show functions. Here is a potential solution:


show() {
  if (this._resolvePopup)
    this._resolvePopup(); // handle multiple show() calls

  return new Promise(resolve => this._resolvePopup = resolve);
}

hide() {
  this.closed = true; // view-only access
  if (this._resolvePopup) {
    this._resolvePopup();
    this._resolvePopup = null;
  }
}

Answer 5

Answer №3

Upon analyzing the input provided in this query, I tackled the solution by utilizing the given framework as a reference:


display() {
  //Implement Show PopUp function
  return new Promise((resolve) => {
      const responseHandler = (body: Response) => {
        resolve(body);
      };
      resolve = responseHandler;
    });
}

conceal() {
  //Add conceal code here
  resolve();
}

private resolve() : void

Answer 6

Upon analyzing the input provided in this query, I tackled the solution by utilizing the given framework as a reference:


display() {
  //Implement Show PopUp function
  return new Promise((resolve) => {
      const responseHandler = (body: Response) => {
        resolve(body);
      };
      resolve = responseHandler;
    });
}

conceal() {
  //Add conceal code here
  resolve();
}

private resolve() : void

What is the most effective approach for handling user input delays with Async promises?

Answer №1

Answer №2

Answer №3

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