using System;
using UnityEngine;

public class ComboBox
{
	public ComboBox(Rect rect, GUIContent buttonContent, GUIContent[] listContent, GUIStyle listStyle)
	{
		this.rect = rect;
		this.buttonContent = buttonContent;
		this.listContent = listContent;
		this.buttonStyle = "button";
		this.boxStyle = "box";
		this.listStyle = listStyle;
	}

	public ComboBox(Rect rect, GUIContent buttonContent, GUIContent[] listContent, string buttonStyle, string boxStyle, GUIStyle listStyle)
	{
		this.rect = rect;
		this.buttonContent = buttonContent;
		this.listContent = listContent;
		this.buttonStyle = buttonStyle;
		this.boxStyle = boxStyle;
		this.listStyle = listStyle;
	}

	public int Show()
	{
		if (ComboBox.forceToUnShow)
		{
			ComboBox.forceToUnShow = false;
			this.isClickedComboButton = false;
		}
		bool flag = false;
		int controlID = GUIUtility.GetControlID(FocusType.Passive);
		EventType typeForControl = Event.current.GetTypeForControl(controlID);
		if (typeForControl == EventType.MouseUp)
		{
			if (this.isClickedComboButton)
			{
				flag = true;
			}
		}
		if (GUI.Button(this.rect, this.buttonContent, this.buttonStyle))
		{
			if (ComboBox.useControlID == -1)
			{
				ComboBox.useControlID = controlID;
				this.isClickedComboButton = false;
			}
			if (ComboBox.useControlID != controlID)
			{
				ComboBox.forceToUnShow = true;
				ComboBox.useControlID = controlID;
			}
			this.isClickedComboButton = true;
		}
		if (this.isClickedComboButton)
		{
			Rect position = new Rect(this.rect.x, this.rect.y + this.listStyle.CalcHeight(this.listContent[0], 1f), this.rect.width, this.listStyle.CalcHeight(this.listContent[0], 1f) * (float)this.listContent.Length);
			GUI.Box(position, string.Empty, this.boxStyle);
			int num = GUI.SelectionGrid(position, this.selectedItemIndex, this.listContent, 1, this.listStyle);
			if (num != this.selectedItemIndex)
			{
				this.selectedItemIndex = num;
			}
		}
		if (flag)
		{
			this.isClickedComboButton = false;
		}
		return this.selectedItemIndex;
	}

	public int SelectedItemIndex
	{
		get
		{
			return this.selectedItemIndex;
		}
		set
		{
			this.selectedItemIndex = value;
		}
	}

	private static bool forceToUnShow;

	private static int useControlID = -1;

	private bool isClickedComboButton;

	private int selectedItemIndex;

	private Rect rect;

	private GUIContent buttonContent;

	private GUIContent[] listContent;

	private string buttonStyle;

	private string boxStyle;

	private GUIStyle listStyle;
}