namespace OINA.Extender.Testharness
{
    using System;
    using System.Drawing;
    using System.Windows.Forms;
    using OINA.Extender.Controls.Styles;

    /// <summary>
    /// The ElementCombo Visual settings form
    /// </summary>
    public partial class ElementComboVisualSettings : Form
    {
        /// <summary>
        /// Gets or sets the color of the ElementCombo background.
        /// </summary>
        private static Color BackgroundColor
        {
            get { return ColorConverter.Convert(ElementComboStyle.Background); }
            set { ElementComboStyle.Background = ColorConverter.Convert(value); }
        }

        /// <summary>
        /// Gets or sets the color of the ElementCombo foreground.
        /// </summary>
        private static Color ForegroundColor
        {
            get { return ColorConverter.Convert(ElementComboStyle.Foreground); }
            set { ElementComboStyle.Foreground = ColorConverter.Convert(value); }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="ElementComboVisualSettings"/> class.
        /// </summary>
        public ElementComboVisualSettings()
        {
            this.InitializeComponent();

            this.cbForegroundColor.DataSource = ColorConverter.GetSystemDrawingColors();
            this.cbBackgroundColor.DataSource = ColorConverter.GetSystemDrawingColors();
            this.cbFontSize.DataSource = new double[] { 8, 10, 12, 14, 16 };

            this.UpdateCombos();
            this.UpdatePanelColors();

            this.cbBackgroundColor.SelectedValueChanged += this.CbBackground_SelectedValueChanged;
            this.cbForegroundColor.SelectedValueChanged += this.CbForeground_SelectedValueChanged;
            this.cbFontSize.SelectedValueChanged += this.CbFontSize_SelectedValueChanged;
        }

        /// <summary>
        /// Handles the SelectedValueChanged event of the background combo.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void CbBackground_SelectedValueChanged(object sender, EventArgs e)
        {
            if (this.cbBackgroundColor.SelectedValue != null)
            {
                BackgroundColor = (Color)this.cbBackgroundColor.SelectedItem;
                this.UpdatePanelColors();
            }
        }

        /// <summary>
        /// Handles the SelectedValueChanged event of the Foreground Combo.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void CbForeground_SelectedValueChanged(object sender, EventArgs e)
        {
            if (this.cbForegroundColor.SelectedValue != null)
            {
                ForegroundColor = (Color)this.cbForegroundColor.SelectedItem;
                this.UpdatePanelColors();
            }
        }

        /// <summary>
        /// Handles the SelectedValueChanged event of the Font Size combo.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void CbFontSize_SelectedValueChanged(object sender, EventArgs e)
        {
            if (this.cbFontSize.SelectedValue != null)
            {
                ElementComboStyle.ComboFontSize = (double)this.cbFontSize.SelectedValue;
            }
        }

        /// <summary>
        /// Updates the panel colors.
        /// </summary>
        private void UpdatePanelColors()
        {
            this.backgroundColorPanel.BackColor = BackgroundColor;
            this.foregroundColorPanel.BackColor = ForegroundColor;
        }

        /// <summary>
        /// Updates the combo values.
        /// </summary>
        private void UpdateCombos()
        {
            ColorConverter.PickColourComboItem(this.cbForegroundColor, ForegroundColor);
            ColorConverter.PickColourComboItem(this.cbBackgroundColor, BackgroundColor);
            this.cbFontSize.SelectedItem = ElementComboStyle.ComboFontSize;
        }
       
        /// <summary>
        /// Handles the ResetStyle button event.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void BtResetStyle_Click(object sender, EventArgs e)
        {
            ElementComboStyle.ResetStyles();
            this.UpdateCombos();
            this.UpdatePanelColors();
        }
    }
}