using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;

namespace Promig.Components {

    public partial class WatermarkMaskedTextBox : MaskedTextBox {

        //Atributos customizados
        private string _watermarkText = "Type here";
        public string WatermarkText {
            get { return _watermarkText; }
            set { _watermarkText = value; }
        }

        private bool _watermarkActive = true;
        public bool WatermarkActive {
            get { return _watermarkActive; }
            set { _watermarkActive = value; }
        }

        private string _maskText = "00000-000";
        public string MaskText {
            get { return _maskText; }
            set { _maskText = value; }
        }

        //Construtores
        public WatermarkMaskedTextBox() {

            this._watermarkActive = true;
            this.Text = _watermarkText;
            this.ForeColor = Color.Gray;

            GotFocus += (source, e) => {
                RemoveWatermak();

            };

            LostFocus += (source, e) => {
                ApplyWatermark();
            };

            //Inicializando componente
            InitializeComponent();

        }

        public WatermarkMaskedTextBox(IContainer container) {

            this._watermarkActive = true;
            this.Text = _watermarkText;
            this.ForeColor = Color.Gray;
            GotFocus += (source, e) => {
                RemoveWatermak();
            };

            LostFocus += (source, e) => {
                ApplyWatermark();
            };

            //Inicializando componente
            container.Add(this);
            InitializeComponent();

        }

        //Métodos de Componente
        public void RemoveWatermak() {
            if (this._watermarkActive) {
                this._watermarkActive = false;
                this.Text = "";
                this.Mask = _maskText;
                this.ForeColor = Color.Black;
            }
        }

        public void ApplyWatermark() {
            if (!this._watermarkActive && Mask.Equals(_maskText) && string.IsNullOrEmpty(this.Text) || ForeColor == Color.Gray) {
                this._watermarkActive = true;
                this.Mask = "aaaaaaaaaa";
                this.Text = _watermarkText;
                this.ForeColor = Color.Gray;
            }
        }
        public void ApplyWatermark(string newText) {
            WatermarkText = newText;
            ApplyWatermark();
        }

    }

}