How to handle MANY UI-buttons' OnMouseUp() in one .cs file? (u5.5+)

I would like to keep scene logic simple.
Let's say I have a "statistics" scene, with 20 different UI-buttons.
Each button needs an OnMouseUp() and Update() void, looks similar (but not the same) like this:

Code (CSharp):

1. public class Button_OK: MonoBehaviour {
2.     void Update () {
3.         if(Input.GetKeyUp(KeyCode.Return))
4.             OnMouseUp();
5.     }[
6.     public void OnMouseUp() {
7.        // ... do something
8.    }
9. }

Is there any easy way to do this?

 

The only way I've found to do it is creating and adding event system at runtime with this kind of complicated code:
https://docs.unity3d.com/ScriptReference/EventSystems.EventTrigger.html

Code (CSharp):

1. public class Button_Cancel_Script : MonoBehaviour {
2.     void Start()
3.     {
4.         EventTrigger trigger = GetComponent<EventTrigger>();
5.         EventTrigger.Entry entry = new EventTrigger.Entry();
6.         entry.eventID = EventTriggerType.PointerUp;
7.         entry.callback.AddListener((data) => { OnPointerUp((PointerEventData)data); });
8.         trigger.triggers.Add(entry);
9.     }
10.  
11.     public void OnPointerUp(PointerEventData data)
12.     {
13.          // ... do something
14.     }
15.  
16.     void Update ()
17.     {
18.         if(Input.GetKeyUp(KeyCode.Escape))
19.         {
20.             OnPointerUp(null);
21.         }
22.     }
23. }

... and of course I also have to:

• - define a gameObject for each button
• - drag each one in the inspector
• - add the corresponding script at Start

Code (CSharp):

1. public class Statistics_Script: MonoBehaviour {
2.   public GameObject Cancel_Button;
3.   ...
4.   void Start() {
5.      Cancel_Button.AddComponent<Button_Cancel_Script>();
6.     ...
7.   }
8. }
9. }

 

Would be nice, if the same .cs file could be used for ALL UI buttons > just drag it on the inspector.
But you can not choose a class named different than the .cs file itself.

Any ideas how to simplify all these?

 

Can you state your problem clearly? What you've said so far can easily be handled with copy/pasting and via multi-object editing in the editor.

is this something that needs to be done dynamically? are the buttons generated at runtime? or are you simply looking for a single distributor script handling all the buttons?

 

Yes, your explanation is slightly difficult to follow.
It's worth noting, however, that in a UI, one wouldn't use OnMouseUp, but rather an IPointerClick (or Up) interface.
Also, getting a keycode will not mean that it got it from that button.. but you did say that wasn't the exact code.. but still.