using System;
using System.ComponentModel;
using System.Drawing;

namespace DevComponents.DotNetBar.Charts.Style
{
    /// <summary>
    /// Represents the visual style of an XY Chart element.
    /// </summary>
    [TypeConverter(typeof(BlankExpandableObjectConverter))]
    public class ChartXyVisualStyle : ContainerVisualStyle
    {
        #region Private variables

        private ScrollBarVisualStyles _HScrollBarVisualStyles;
        private ScrollBarVisualStyles _VScrollBarVisualStyles;

        private int _InterSeriesGap = -1;
        private int _IntraSeriesGap = -1;

        private Tbool _AutoExpandIntraSeriesGap = Tbool.NotSet;

        #endregion

        #region Public properties

        #region AutoExpandIntraSeriesGap

        /// <summary>
        /// Gets or sets whether to auto adjust the IntraSeriesGap when space permits.
        /// </summary>
        [Description("Indicates whether to auto adjust the IntraSeriesGap when space permits.")]
        [DefaultValue(Tbool.NotSet)]
        public Tbool AutoExpandIntraSeriesGap
        {
            get { return (_AutoExpandIntraSeriesGap); }

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

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

        #endregion

        #region HScrollBarVisualStyles

        /// <summary>
        /// Gets or sets the visual styles to be used for Horizontal ScrollBar elements 
        /// </summary>
        [Category("Style")]
        [Description("Indicates visual styles to be used for Horizontal ScrollBar elements ")]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public ScrollBarVisualStyles HScrollBarVisualStyles
        {
            get
            {
                if (_HScrollBarVisualStyles == null)
                {
                    _HScrollBarVisualStyles = new ScrollBarVisualStyles();

                    UpdateChangeHandler(null, _HScrollBarVisualStyles);
                }

                return (_HScrollBarVisualStyles);
            }

            set
            {
                if (_HScrollBarVisualStyles != value)
                {
                    ScrollBarVisualStyles oldValue = _HScrollBarVisualStyles;
                    _HScrollBarVisualStyles = value;

                    OnStyleChanged("HScrollBarVisualStyles", oldValue, value);
                }
            }
        }

        #endregion

        #region InterSeriesGap

        /// <summary>
        /// Gets or sets the pixel gap between grouped, qualitative series.
        /// </summary>
        [Description("Indicates the pixel gap between grouped, qualitative series.")]
        [DefaultValue(-1)]
        public int InterSeriesGap
        {
            get { return (_InterSeriesGap); }

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

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

        #endregion

        #region IntraSeriesGap

        /// <summary>
        /// Gets or sets the pixel gap between each series in a set of grouped, qualitative series.
        /// </summary>
        [Description("Indicates the pixel gap between each series in a set of grouped, qualitative series.")]
        [DefaultValue(-1)]
        public int IntraSeriesGap
        {
            get { return (_IntraSeriesGap); }

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

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

        #endregion

        #region VScrollBarVisualStyles

        /// <summary>
        /// Gets or sets the visual styles to be used for Vertical ScrollBar elements 
        /// </summary>
        [Category("Style")]
        [Description("Indicates visual styles to be used for Vertical ScrollBar elements ")]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public ScrollBarVisualStyles VScrollBarVisualStyles
        {
            get
            {
                if (_VScrollBarVisualStyles == null)
                {
                    _VScrollBarVisualStyles = new ScrollBarVisualStyles();

                    UpdateChangeHandler(null, _VScrollBarVisualStyles);
                }

                return (_VScrollBarVisualStyles);
            }

            set
            {
                if (_VScrollBarVisualStyles != value)
                {
                    ScrollBarVisualStyles oldValue = _VScrollBarVisualStyles;
                    _VScrollBarVisualStyles = value;

                    OnStyleChanged("VScrollBarVisualStyles", oldValue, value);
                }
            }
        }

        #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 ((_InterSeriesGap < 0) &&
                    (_IntraSeriesGap < 0) &&
                    (_VScrollBarVisualStyles == null) &&
                    (base.IsEmpty == true));
            }
        }

        #endregion

        #endregion

        #region ApplyStyle

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

                if (style.AutoExpandIntraSeriesGap != Tbool.NotSet)
                    _AutoExpandIntraSeriesGap = style.AutoExpandIntraSeriesGap;

                if (style.InterSeriesGap >= 0)
                    _InterSeriesGap = style.InterSeriesGap;

                if (style.IntraSeriesGap >= 0)
                    _IntraSeriesGap = style.IntraSeriesGap;

                if (style.HScrollBarVisualStyles != null)
                {
                    for (int i = 0; i < style.HScrollBarVisualStyles.Styles.Length; i++)
                    {
                        if (style.HScrollBarVisualStyles.Styles[i] != null)
                            HScrollBarVisualStyles.GetStyle(i).ApplyStyle(style.HScrollBarVisualStyles.Styles[i]);
                    }
                }

                if (style.VScrollBarVisualStyles != null)
                {
                    for (int i = 0; i < style.VScrollBarVisualStyles.Styles.Length; i++)
                    {
                        if (style.VScrollBarVisualStyles.Styles[i] != null)
                            VScrollBarVisualStyles.GetStyle(i).ApplyStyle(style.VScrollBarVisualStyles.Styles[i]);
                    }
                }
            }
        }

        #endregion

        #region ApplyDefaults

        public override void ApplyDefaults()
        {
            if (BorderPattern == null)
                BorderPattern = new BorderPattern(LinePattern.Solid);

            if (InterSeriesGap < 0)
                InterSeriesGap = 2;

            if (IntraSeriesGap < 0)
                IntraSeriesGap = 2;

            if (AutoExpandIntraSeriesGap == Tbool.NotSet)
                AutoExpandIntraSeriesGap = Tbool.True;

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

            base.ApplyDefaults();
        }

        #endregion

        #region Copy

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

            CopyTo(style);

            return (style);
        }

        #endregion

        #region CopyTo

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

            style.AutoExpandIntraSeriesGap = _AutoExpandIntraSeriesGap;
            style.InterSeriesGap = _InterSeriesGap;
            style.IntraSeriesGap = _IntraSeriesGap;

            style.HScrollBarVisualStyles = (_HScrollBarVisualStyles != null) ? _HScrollBarVisualStyles.Copy() : null;
            style.VScrollBarVisualStyles = (_VScrollBarVisualStyles != null) ? _VScrollBarVisualStyles.Copy() : null;
        }

        #endregion

        #region GetSerialData

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

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

                sec.AddStartElement(serialName);
            }

            sec.AddValue("AutoExpandIntraSeriesGap", AutoExpandIntraSeriesGap, Tbool.NotSet);
            sec.AddValue("InterSeriesGap", InterSeriesGap, -1);
            sec.AddValue("IntraSeriesGap", IntraSeriesGap, -1);

            if (_HScrollBarVisualStyles != null && _HScrollBarVisualStyles.IsEmpty == false)
                sec.AddElement(_HScrollBarVisualStyles.GetSerialData("HScrollBarVisualStyles"));

            if (_VScrollBarVisualStyles != null && _VScrollBarVisualStyles.IsEmpty == false)
                sec.AddElement(_VScrollBarVisualStyles.GetSerialData("VScrollBarVisualStyles"));

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

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

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

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

        #endregion

        #region ProcessCollection

        internal override void ProcessCollection(SerialElement se)
        {
            SerialElementCollection sec = se.Sec;

            switch (se.Name)
            {
                case "HScrollBarVisualStyles":
                    sec.PutSerialData(HScrollBarVisualStyles);
                    break;

                case "VScrollBarVisualStyles":
                    sec.PutSerialData(HScrollBarVisualStyles);
                    break;

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

        #endregion

        #endregion

        #region IDisposable

        public override void Dispose()
        {
            HScrollBarVisualStyles = null;
            VScrollBarVisualStyles = null;

            base.Dispose();
        }

        #endregion
    }
}