using System;
using System.Drawing;
using System.Windows.Forms;
using TradeIdeas.TIProData;

namespace TradeIdeas.TIProGUI
{
    public partial class NumericTextBox : UserControl
    {
        private string Placeholder { get; set; }

        public event EventHandler OnKeyUpEnter;

        public float FontSize
        {
            set
            {
                if (value > 0)
                    txtNumeric.Font = new Font("Microsoft Sans Serif", value, FontStyle.Regular);
            }
        }
        
        public int MaxLength
        {
            set
            {
                if (value > 0)
                    txtNumeric.MaxLength = value;
            }
        }

        public string Value
        {
            get
            {
                return this.txtNumeric.Text;
            }
            set
            {
                this.txtNumeric.Text = value;
            }
        }

        /// <summary>
        /// Get/Set the text alignment for the textbox.
        /// </summary>
        public HorizontalAlignment TextAlign
        {
            get => txtNumeric.TextAlign;
            set => txtNumeric.TextAlign = value;
        }

        /// <summary>
        /// This user control is used to search for symbols and company names via a web service call.
        /// The control features auto-complete functionality.
        /// </summary>
        public NumericTextBox() : base()
        {
            InitializeComponent();

            txtNumeric.AutoSize = false;
        }

        public void SetTextBoxPlaceholder(string placeholder)
        {
            this.Placeholder = placeholder;
            this.AddPlaceholder();
        }

        private void txtNumberic_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar))
            {
                e.Handled = true;
            }
        }

        private void txtNumberic_KeyUp(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter && this.OnKeyUpEnter != null)
            {
                this.OnKeyUpEnter(this, new EventArgs());
            }
        }

        private void AddPlaceholder()
        {
            if (string.IsNullOrEmpty(this.Placeholder) || !string.IsNullOrEmpty(txtNumeric.Text))
            {
                return;
            }

            txtNumeric.Text = this.Placeholder;
            txtNumeric.ForeColor = Color.Gray;
        }

        private void RemovePlaceholder()
        {
            if (string.IsNullOrEmpty(this.Placeholder))
            {
                return;
            }

            if (this.Placeholder.EqualsIgnoreCase(txtNumeric.Text))
            {
                txtNumeric.Text = string.Empty;
                txtNumeric.ForeColor = Color.Black;
            }
        }
    }
}