using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Reflection;
using DevComponents.DotNetBar.Charts;

namespace DevComponents.Charts.Design
{
    public class IndicatorCollectionEditor : BaseCollectionEditor
    {
        #region Private variables

        private ChartSeries _ChartSeries;

        #endregion

        public IndicatorCollectionEditor(Type type)
            : base(type)
        {
        }

        #region EditValue

        public override object EditValue(
            ITypeDescriptorContext context, IServiceProvider provider, object value)
        {
            _ChartSeries = context.Instance as ChartSeries;

            return (base.EditValue(context, provider, value));
        }

        #endregion

        #region CreateInstance

        protected override object CreateInstance(Type itemType)
        {
            if (itemType == typeof(RegressionLine))
            {
                RegressionLine regLine = (RegressionLine)base.CreateInstance(itemType);

                if (_ChartSeries != null)
                    regLine.Name = _ChartSeries.ChartIndicators.GetUniqueName("RegLine");

                return (regLine);
            }

            if (itemType == typeof(TrendLine))
            {
                TrendLine trendLine = (TrendLine)base.CreateInstance(itemType);

                if (_ChartSeries != null)
                    trendLine.Name = _ChartSeries.ChartIndicators.GetUniqueName("TrendLine");

                return (trendLine);
            }

            return (base.CreateInstance(itemType));
        }

        #endregion

        #region CopyButton_Click

        protected override void CopyButton_Click(object sender, EventArgs e)
        {
            ChartIndicator item = ChartItem as ChartIndicator;

            if (item != null)
            {
                if (AddButton != null)
                {
                    ChartControlDesigner ccd = GetDesigner(_ChartSeries.ChartControl);
                    ChartIndicatorCollection cic = _ChartSeries.ChartIndicators;

                    ccd.InCopyItem = true;

                    if (item is RegressionLine)
                        _ItemTypes[0] = typeof(RegressionLine);

                    try
                    {
                        AddButton.PerformClick();

                        ChartIndicator clone = (ChartIndicator)cic[cic.Count - 1];

                        string name = clone.Name;
                        item.CopyTo(clone);
                        clone.Name = name;
                    }
                    finally
                    {
                        if (item is RegressionLine)
                            _ItemTypes[0] = typeof(TrendLine);

                        ccd.InCopyItem = false;
                    }
                }
            }
        }

        #endregion

        #region CreateCollectionItemType

        protected override Type CreateCollectionItemType()
        {
            return typeof(ChartIndicator);
        }

        #endregion

        #region CreateNewItemTypes

        private Type[] _ItemTypes = new Type[] 
        {
            typeof(TrendLine),
            typeof(RegressionLine),
        };

        protected override Type[] CreateNewItemTypes()
        {
            return (_ItemTypes);
        }

        #endregion
    }
}