Reverse the action and postpone the Ajax call for a specified time or until the next action occurs

How can I implement a setup and undo feature for my ajax calls that allows users to delay the call for a set amount of time and abort it if needed? I also want to be able to stop the delay and proceed with the most recent ajax call if another action is triggered.

For instance, if I send an email and have 5 minutes to undo the action, I should be able to send another email to replace the first one and give it another 5 minutes for potential undoing.

I am curious about the best approach to achieve this functionality. Any suggestions?

javascriptajax

Answer №1

One approach is to encapsulate actions and display pending actions that can be confirmed by clicking a button. This allows users to easily remove any pending actions at any time.

Alternatively, implementing an undo feature (such as saving deleted text with position information) enables users to revert the system back to its previous state when needed.

For tasks like sending emails or saving data to a database, managing pending changes in a queue may be more effective due to their complexity.

If you're interested, YUI library offers an UNdo/Redo module that you can check out.

Answer №2

Below is an outline of the steps in pseudo-code:

  • User initiates sending action
  • If there is a previously saved email ...
    • Clear the timeout
    • Invoke the send function which will ...
      • Retrieve the saved email
      • If the email has not been erased ...
        • Erase the saved email
        • Utilize ajax to send it
  • Save the current email as the new saved email
  • Set a timeout to trigger the send function (outlined above)

It's important to note that the process of "saving" and "retrieving" emails in this context is straightforward. Save the email to a variable named 'savedEmail' and retrieve it from there. Erasing simply involves setting the 'savedEmail' variable to null.

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