SourceCode/PROMS/DataLoader/frmPG.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Reflection;

namespace DataLoader
{
	public partial class frmPG : Form
	{
		private object _SelectedObject;
		public object SelectedObject
		{
			get { return _SelectedObject; }
			set { _SelectedObject = value; }
		}
		public frmPG(string title, object selectedObject)
		{
			InitializeComponent();
			this.Text = title;
			_SelectedObject = selectedObject;
		}
		private void CheckValidity()
		{
			if (SelectedObject.GetType().Name == "DataLoaderSettings")
			{
				DataLoaderSettings myDls = (DataLoaderSettings)SelectedObject;
				string validity = myDls.ValidityCheck;
				pg.SelectedObject = SelectedObject;
				tbError.Text = validity;
				if (validity == "")
					tbError.Visible = false;
				else
				{
					using (Graphics gr = tbError.CreateGraphics())
					{
						SizeF sf = gr.MeasureString(validity, tbError.Font,tbError.ClientRectangle.Width-10);
						tbError.Height = (int)(tbError.Font.GetHeight(gr.DpiY) + sf.Height);
					}
					tbError.Visible = true;
				}
			}
			else
				tbError.Visible = false;
			btnOK.Enabled = !tbError.Visible;
		}
		private void frmPG_Load(object sender, EventArgs e)
		{
			pg.PropertyValueChanged += new PropertyValueChangedEventHandler(pg_PropertyValueChanged);
			pg.SelectedObject = SelectedObject;
			Resize += new EventHandler(frmPG_Resize);
			CheckValidity();
			MoveSplitterTo(pg, SplitterWidth);
		}
		void pg_PropertyValueChanged(object s, PropertyValueChangedEventArgs e)
		{
			if (e.ChangedItem.Label == "VEProms Exe Folder")
			{
				DataLoaderSettings dls = SelectedObject as DataLoaderSettings;
				if (dls != null)
					dls.VESamFile = dls.VEPromsPath + "\\vesam.opt";
			}
			if (e.ChangedItem.Label == "Procedure Folder")
			{
				DataLoaderSettings dls = SelectedObject as DataLoaderSettings;
				if (dls != null)
					dls.PDFFolder = "";
			}
			CheckValidity();
		}
		void frmPG_Resize(object sender, EventArgs e)
		{
			MoveSplitterTo(pg, SplitterWidth);
		}
		private int _SplitterWidth = 0;
		public int SplitterWidth
		{
			get
			{
				if (_SplitterWidth == 0)
				{
					using (Graphics gr = this.CreateGraphics())
						_SplitterWidth = 180 * ((int)gr.DpiX) / 96;
				}
				return _SplitterWidth;
			}
		}
		static void MoveSplitterTo(PropertyGrid grid, int x)
		{
			// HEALTH WARNING: reflection can be brittle...
			FieldInfo field = typeof(PropertyGrid)
					.GetField("gridView",
							BindingFlags.NonPublic | BindingFlags.Instance);
			field.FieldType
					.GetMethod("MoveSplitterTo",
							BindingFlags.NonPublic | BindingFlags.Instance)
					.Invoke(field.GetValue(grid), new object[] { x });
		}

		private void btnCancel_Click(object sender, EventArgs e)
		{
			PropertyDescriptor pd = pg.SelectedGridItem.PropertyDescriptor;
			pd.ResetValue(pg.SelectedObject);
		}
	}
}