using UnityEngine;

using System.Collections;

public class UIEventListener : MonoBehaviour

{

public delegate void VoidDelegate(GameObject go);

public delegate void BoolDelegate(GameObject go, bool state);

public delegate void FloatDelegate(GameObject go, float delta);

public delegate void VectorDelegate(GameObject go, Vector2 delta);

public delegate void StringDelegate(GameObject go, string text);

public delegate void ObjectDelegate(GameObject go, GameObject draggedObject);

public delegate void KeyCodeDelegate(GameObject go, KeyCode key);

public object parameter;

public VoidDelegate onSubmit;

public VoidDelegate onClick;

public VoidDelegate onDoubleClick;

public BoolDelegate onHover;

public BoolDelegate onPress;

public BoolDelegate onSelect;

public FloatDelegate onScroll;

public VectorDelegate onDrag;

public ObjectDelegate onDrop;

public StringDelegate onInput;

public KeyCodeDelegate onKey;

void OnSubmit() { if (onSubmit != null) onSubmit(gameObject); }

void OnClick() { if (onClick != null) onClick(gameObject); }

void OnDoubleClick() { if (onDoubleClick != null) onDoubleClick(gameObject); }

void OnHover(bool isOver) { if (onHover != null) onHover(gameObject, isOver); }

void OnPress(bool isPressed) { if (onPress != null) onPress(gameObject, isPressed); }

void OnSelect(bool selected) { if (onSelect != null) onSelect(gameObject, selected); }

void OnScroll(float delta) { if (onScroll != null) onScroll(gameObject, delta); }

void OnDrag(Vector2 delta) { if (onDrag != null) onDrag(gameObject, delta); }

void OnDrop(GameObject go) { if (onDrop != null) onDrop(gameObject, go); }

void OnInput(string text) { if (onInput != null) onInput(gameObject, text); }

void OnKey(KeyCode key) { if (onKey != null) onKey(gameObject, key); }

///

/// Get or add an event listener to the specified game object.

///

static public UIEventListener Get(GameObject go)

{

UIEventListener listener = go.GetComponent();

if (listener == null) listener = go.AddComponent();

return listener;

}

}