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

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

        private ChartAxis _ChartAxis;

        #endregion

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

        #region EditValue

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

            IComponentChangeService cs = BeforeEditValue(context);

            object retval = value;

            try
            {
                retval = base.EditValue(context, provider, value);
            }
            finally
            {
                AfterEditValue(context, cs);
            }

            return (retval);
        }

        #endregion

        #region CreateInstance

        protected override object CreateInstance(Type itemType)
        {
            if (itemType == typeof(ReferenceLine))
            {
                ReferenceLine line = (ReferenceLine)base.CreateInstance(itemType);

                line.Name = _ChartAxis.ReferenceLines.GetUniqueName();

                if (_ChartAxis != null)
                    line.AxisValue = _ChartAxis.ActualMinValue;

                return (line);
            }

            return (base.CreateInstance(itemType));
        }

        #endregion

        #region CopyButton_Click

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

            if (item != null)
            {
                if (AddButton != null)
                {
                    ChartControlDesigner ccd = GetDesigner(_ChartAxis.ChartControl);

                    ccd.InCopyItem = true;

                    try
                    {
                        AddButton.PerformClick();

                        ReferenceLineCollection rlc = _ChartAxis.ReferenceLines;
                        ReferenceLine clone = rlc[rlc.Count - 1];

                        string name = clone.Name;
                        item.CopyTo(clone);
                        clone.Name = name;
                    }
                    finally
                    {
                        ccd.InCopyItem = false;
                    }
                }
            }
        }

        #endregion

        #region CreateCollectionItemType

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

        #endregion
    }
}