using System;
using System.Windows.Forms;

namespace TBF.UI.Item
{
    public class EditInt : IEditItem
    {
        string name;
        int variable;
        int lowerLimit;
        int upperLimit;
        TextBox textBox;

        public EditInt(string name, ref int variable, int lowerLimit, int upperLimit)
        {
            this.name = name;
            this.variable = variable;
            this.lowerLimit = lowerLimit;
            this.upperLimit = upperLimit;

            this.textBox = new TextBox();
        }

        public EditInt(string name, ref int variable, int lowerLimit)
            : this (name, ref variable, lowerLimit, Int32.MaxValue)
        {
        }

        public EditInt(string name, ref int variable)
            : this(name, ref variable, Int32.MinValue, Int32.MaxValue)
        {
        }

        public string Name() { return name; }
        public Control EmbeddedControl() { return textBox; }
        public string Print() { return variable.ToString(); }
        public void Update(string strValue) { variable = int.Parse(strValue); }

        public bool Validate(string strValue, out string message)
        {
            int dummy;
            if (!int.TryParse(strValue, out dummy))
            {
                message = string.Format("{0} is invalid", name);
                return false;
            }
            else if (dummy < lowerLimit)
            {
                message = string.Format("{0} is smaller then {1}", name, lowerLimit);
                return false;
            }
            else if (dummy > upperLimit)
            {
                message = string.Format("{0} is larger then {1}", name, upperLimit);
                return false;
            }
            else
            {
                message = string.Empty;
                return true;
            }
        }
    }
}