using System.ComponentModel;
using System.Drawing;

namespace DevComponents.DotNetBar.Charts.Style
{
    ///<summary>
    /// ChartLegendVisualStyles
    ///</summary>
    [TypeConverter(typeof(VisualStylesConverter))]
    public class ChartLegendVisualStyles : VisualStyles<ChartLegendVisualStyle>
    {
        #region Copy

        /// <summary>
        /// Returns the copy of the style.
        /// </summary>
        /// <returns>Copy of the style.</returns>
        public ChartLegendVisualStyles Copy()
        {
            ChartLegendVisualStyles styles = new ChartLegendVisualStyles();

            for (int i = 0; i < Styles.Length; i++)
            {
                ChartLegendVisualStyle vstyle = Styles[i];

                if (vstyle != null)
                    styles.Styles[i] = vstyle.Copy();
            }

            return (styles);
        }

        #endregion
    }

    /// <summary>
    /// Represents the visual style of a Legend element.
    /// </summary>
    [TypeConverter(typeof(VisualStylesConverter))]
    public class ChartLegendVisualStyle : ContainerVisualStyle
    {
        #region Private variables

        private Tbool _EquallySpacedItems = Tbool.NotSet;

        private int _HorizontalSpacing = -1;
        private int _VerticalSpacing = -1;

        #endregion

        #region Public properties

        #region EquallySpacedItems

        /// <summary>
        /// Gets or sets whether the items in the Legend are equally spaced.
        /// </summary>
        [DefaultValue(Tbool.NotSet), Category("Appearance")]
        [Description("Indicates whether the items in the Legend are equally spaced.")]
        public Tbool EquallySpacedItems
        {
            get { return (_EquallySpacedItems); }

            set
            {
                if (value != _EquallySpacedItems)
                {
                    _EquallySpacedItems = value;

                    OnPropertyChangedEx("EquallySpacedItems", VisualChangeType.Layout);
                }
            }
        }

        #endregion

        #region HorizontalSpacing

        /// <summary>
        /// Gets or sets the horizontal spacing of the legend items.
        /// </summary>
        [DefaultValue(-1), Category("Appearance")]
        [Description("Indicates the horizontal spacing of the legend items.")]
        public int HorizontalSpacing
        {
            get { return (_HorizontalSpacing); }

            set
            {
                if (value != _HorizontalSpacing)
                {
                    _HorizontalSpacing = value;

                    OnPropertyChangedEx("HorizontalSpacing", VisualChangeType.Layout);
                }
            }
        }

        #endregion

        #region VerticalSpacing

        /// <summary>
        /// Gets or sets the vertical spacing of the legend items.
        /// </summary>
        [DefaultValue(-1), Category("Appearance")]
        [Description("Indicates the vertical spacing of the legend items.")]
        public int VerticalSpacing
        {
            get { return (_VerticalSpacing); }

            set
            {
                if (value != _VerticalSpacing)
                {
                    _VerticalSpacing = value;

                    OnPropertyChangedEx("VerticalSpacing", VisualChangeType.Layout);
                }
            }
        }

        #endregion

        #region IsEmpty

        /// <summary>
        /// Gets whether the style is logically Empty.
        /// </summary>
        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        [Description("Gets whether the style is logically Empty.")]
        public override bool IsEmpty
        {
            get
            {
                return ((_EquallySpacedItems == Tbool.NotSet) &&
                    (_HorizontalSpacing == -1) &&
                    (_VerticalSpacing == -1) &&
                    (base.IsEmpty == true));
            }
        }

        #endregion

        #endregion

        #region Hidden properties

        #region Alignment

        /// <summary>
        /// Gets or sets the alignment of the text
        /// </summary>
        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public new Alignment Alignment
        {
            get { return (base.Alignment); }
            set { base.Alignment = value; }
        }

        #endregion

        #region AllowWrap

        /// <summary>
        /// Gets or sets whether text wrapping is permitted
        /// </summary>
        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public new Tbool AllowWrap
        {
            get { return (base.AllowWrap); }
            set { base.AllowWrap = value; }
        }

        #endregion

        #region Font

        /// <summary>
        /// Gets or sets the style Font
        /// </summary>
        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public new Font Font
        {
            get { return (base.Font); }
            set { base.Font = value; }
        }

        #endregion

        #region TextColor

        /// <summary>
        /// Gets or sets the Text color
        /// </summary>
        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public new Color TextColor
        {
            get { return (base.TextColor); }
            set { base.TextColor = value; }
        }

        #endregion

        #endregion

        #region ApplyStyle

        /// <summary>
        /// Applies the style to instance of this style.
        /// </summary>
        /// <param name="style">Style to apply.</param>
        public void ApplyStyle(ChartLegendVisualStyle style)
        {
            if (style != null)
            {
                base.ApplyStyle(style);

                if (style.EquallySpacedItems != Tbool.NotSet)
                    EquallySpacedItems = style.EquallySpacedItems;

                if (style.HorizontalSpacing != -1)
                    HorizontalSpacing = style.HorizontalSpacing;

                if (style.VerticalSpacing != -1)
                    VerticalSpacing = style.VerticalSpacing;
            }
        }

        #endregion

        #region ApplyDefaults

        public override void ApplyDefaults()
        {
            base.ApplyDefaults();

            if (VerticalSpacing < 0)
                VerticalSpacing = 2;

            if (HorizontalSpacing < 0)
                HorizontalSpacing = 2;

            if (BorderPattern == null)
                BorderPattern = new BorderPattern(LinePattern.Solid);

            if (DropShadow.Enabled == Tbool.NotSet)
                DropShadow.Enabled = Tbool.False;
        }

        #endregion

        #region Copy

        /// <summary>
        /// Returns the copy of the style.
        /// </summary>
        /// <returns>Copy of the style.</returns>
        public new ChartLegendVisualStyle Copy()
        {
            ChartLegendVisualStyle style = new ChartLegendVisualStyle();

            CopyTo(style);

            return (style);
        }

        #endregion

        #region CopyTo

        /// <summary>
        /// Returns the copy of the style.
        /// </summary>
        /// <returns>Copy of the style.</returns>
        public void CopyTo(ChartLegendVisualStyle style)
        {
            base.CopyTo(style);

            style.HorizontalSpacing = _HorizontalSpacing;
            style.EquallySpacedItems = _EquallySpacedItems;

            style.VerticalSpacing = _VerticalSpacing;
        }

        #endregion

        #region GetSerialData

        internal override SerialElementCollection GetSerialData(string serialName)
        {
            SerialElementCollection sec = new SerialElementCollection();

            if (serialName != null)
            {
                if (serialName.Equals("") == true)
                    serialName = "ChartLegendVisualStyle";

                sec.AddStartElement(serialName);
            }

            sec.AddValue("HorizontalSpacing", HorizontalSpacing, -1);
            sec.AddValue("EquallySpacedItems", EquallySpacedItems, Tbool.NotSet);
            sec.AddValue("VerticalSpacing", VerticalSpacing, -1);

            sec.AddElement(base.GetSerialData(null));

            if (serialName != null)
                sec.AddEndElement(serialName);

            return (sec);
        }

        #endregion

        #region PutSerialData

        #region ProcessValue

        internal override void ProcessValue(SerialElement se)
        {
            switch (se.Name)
            {
                case "HorizontalSpacing":
                    HorizontalSpacing = int.Parse(se.StringValue);
                    break;

                case "EquallySpacedItems":
                    EquallySpacedItems = (Tbool)se.GetValueEnum(typeof(Tbool));
                    break;

                case "VerticalSpacing":
                    VerticalSpacing = int.Parse(se.StringValue);
                    break;

                default:
                    base.ProcessValue(se);
                    break;
            }
        }

        #endregion

        #endregion
    }
}