UI.Windows-submodule/Runtime/Components/Basic/ButtonModules/DoublePressComponentModule.cs at master · chromealex/UI.Windows-submodule · GitHub

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using UnityEngine.EventSystems;

namespace UnityEngine.UI.Windows {

    public class DoublePressComponentModule : ButtonComponentModule, IPointerDownHandler {

        public float pressTime = 1f;
        public bool overrideSingleClick;

        private bool isPressed;
        private float pressTimer;
        private System.Action callback;

        public override void OnInit() {

            base.OnInit();

            if (this.overrideSingleClick == true) {

                this.buttonComponent.button.onClick.RemoveAllListeners();

            }

        }

        public override void OnDeInit() {

	        base.OnDeInit();

	        this.RemoveAllCallbacks();

        }

        public override void OnPoolAdd() {

            base.OnPoolAdd();

	        this.RemoveAllCallbacks();

        }

        public void SetCallback(System.Action callback) {

	        this.callback = callback;

        }

        public void AddCallback(System.Action callback) {

	        this.callback += callback;

        }

        public void RemoveCallback(System.Action callback) {

	        this.callback -= callback;

        }

        public void RemoveAllCallbacks() {

	        this.callback = null;

        }

        public void LateUpdate() {

            if (this.isPressed == true && Time.realtimeSinceStartup - this.pressTimer > this.pressTime) {

                this.isPressed = false;

            }

        }

        public void OnPointerDown(PointerEventData eventData) {

            if (this.isPressed == false) {

                this.isPressed = true;
                this.pressTimer = Time.realtimeSinceStartup;

            } else {

                if (Time.realtimeSinceStartup - this.pressTimer <= this.pressTime) {

                    if (this.overrideSingleClick == true) {

                        this.buttonComponent.RaiseClick();

                    }

                    if (this.callback != null) this.callback.Invoke();
                    this.isPressed = false;

                }

            }

        }

    }

}