using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class ChatBarChatView : View
{

	public Text findFriendBtnLabel;

	public Transform container;
	public ChatBarChatItem itemPrefab;


	protected override void OnInitCompleted ()
	{
		findFriendBtnLabel.text = Language.GetStr ("ChatPanel", "findMorePlayer");

		if (!FollowManager.GetInstance ().initialized) 
		{
			ListHelper.HideAll (container);
			FollowManager.GetInstance ().InitCompletion.AddListener (OnFollowersInit);
			FollowManager.GetInstance ().Init ();
		} 
		else 
		{
			OnFollowersInit ();
		}
	}

	protected override void OnDestroy ()
	{
		base.OnDestroy ();
		FollowManager.GetInstance ().InitCompletion.RemoveListener (OnFollowersInit);
		FollowManager.GetInstance ().FollowAdded.RemoveListener (OnFollowAdded);
		FollowManager.GetInstance ().FollowDeleted.RemoveListener (OnFollowDeleted);
	}

	private void OnFollowersInit()
	{
		FollowManager.GetInstance ().InitCompletion.RemoveListener (OnFollowersInit);
		FollowManager.GetInstance ().FollowAdded.AddListener (OnFollowAdded);
		FollowManager.GetInstance ().FollowDeleted.AddListener (OnFollowDeleted);
		OnVisibleChanged ();

		if (!ChatManager.GetInstance ().initialized)
			ChatManager.GetInstance ().Init ();
	}


	protected override void OnVisibleChanged ()
	{
		if(visible && FollowManager.GetInstance().initialized)
		{
			ListHelper.FillList<Follower> (container, FollowManager.GetInstance().GetFollowList(), itemPrefab);
		}
	}


	private void OnFollowAdded(int userId)
	{
		Follower follower = FollowManager.GetInstance ().GetFollower (userId);
		if(follower != null)
		{
			ListHelper.AddToList<Follower> (container, follower, itemPrefab);
		}
	}
		
	private void OnFollowDeleted(object follower)
	{
		ListHelper.Remove<Follower> (container, follower as Follower);
	}


	public void ShowFindFriendPanel()
	{
		ChatPanel.ShowFindFriend ();
	}
}