SourceCode/PROMS/DotNetBar Source Code/DevComponents.DotNetBar.Charts.Design/PieReferenceCollectionEditor.cs

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

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

        private SliceVisualLayout _SliceLayout;

        #endregion

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

        #region EditValue

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

            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(PieReferenceLine))
            {
                PieReferenceLine line = (PieReferenceLine)base.CreateInstance(itemType);

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

                return (line);
            }

            return (base.CreateInstance(itemType));
        }

        #endregion

        #region CopyButton_Click

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

            if (item != null)
            {
                if (AddButton != null)
                {
                    ChartVisualElement cve = _SliceLayout.Parent as ChartVisualElement;

                    ChartControlDesigner ccd = (cve != null) ? GetDesigner(cve.ChartControl) : null;

                    if (ccd != null)
                        ccd.InCopyItem = true;

                    try
                    {
                        AddButton.PerformClick();

                        PieReferenceLineCollection rlc = _SliceLayout.ReferenceLines;
                        PieReferenceLine clone = rlc[rlc.Count - 1];

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

        #endregion

        #region CreateCollectionItemType

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

        #endregion
    }
}