Implementing WS-SecureConversation in Microsoft IssueVision

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Windows.Forms;

namespace IssueVision
{
	public class MiddlePane : UserControl, IObserver
	{
		private IssueList issueList;
		private CheckBox chkShowClosed;
		private Label labelShowClosed;
		private SectionHeader header;
		private PaneCaption PaneCaption1;
		
		private IssueSubject m_subject;
		
		// the IssueID of the currently selected row
		private int m_selectedID;
		
		// currently selected row, used to reselect the row
		// if the issue list is updated
		private DataRowView m_selectedRow;
		
		private IContainer components = null;

		public ISubject Subject
		{
			set
			{
				m_subject = (IssueSubject)value;
				
				// the issue list needs the subject to determine if a
				// row is in the conflict state
				issueList.Subject = m_subject;
				m_subject.IssueDataChanged += new IssueSubject.IssueDataChangedEventHandler(this.Subject_IssueDataChanged);
			}
		}

		public MiddlePane()
		{
			InitializeComponent();
		}

		protected override void Dispose(bool disposing)
		{
			if (disposing && components != null)
			{
				components.Dispose();
			}
			base.Dispose(disposing);
		}

		[DebuggerStepThroughAttribute()]
		private void InitializeComponent()
		{
			PaneCaption1 = new PaneCaption();
			header = new SectionHeader();
			labelShowClosed = new Label();
			chkShowClosed = new CheckBox();
			issueList = new IssueList();
			header.SuspendLayout();
			SuspendLayout();
			
			PaneCaption1.Caption = "Issues";
			PaneCaption1.Dock = DockStyle.Top;
			PaneCaption1.Font = new Font("Tahoma", 12.0F, FontStyle.Bold);
			PaneCaption1.Location = new Point(1, 1);
			PaneCaption1.Name = "PaneCaption1";
			PaneCaption1.Size = new Size(318, 31);
			PaneCaption1.TabIndex = 15;
			
			header.Controls.Add(labelShowClosed);
			header.Controls.Add(chkShowClosed);
			header.Dock = DockStyle.Top;
			header.Location = new Point(1, 32);
			header.Name = "header";
			header.Size = new Size(318, 20);
			header.TabIndex = 16;
			
			labelShowClosed.Anchor = AnchorStyles.Top | AnchorStyles.Right;
			labelShowClosed.BackColor = Color.Transparent;
			labelShowClosed.Location = new Point(200, 4);
			labelShowClosed.Name = "labelShowClosed";
			labelShowClosed.Size = new Size(112, 14);
			labelShowClosed.TabIndex = 2;
			labelShowClosed.Text = "Show Closed Issues";
			labelShowClosed.Click += new EventHandler(this.labelShowClosed_Click);
			
			chkShowClosed.Anchor = AnchorStyles.Top | AnchorStyles.Right;
			chkShowClosed.BackColor = Color.Transparent;
			chkShowClosed.Checked = true;
			chkShowClosed.CheckState = CheckState.Checked;
			chkShowClosed.FlatStyle = FlatStyle.System;
			chkShowClosed.Location = new Point(184, 4);
			chkShowClosed.Name = "chkShowClosed";
			chkShowClosed.Size = new Size(13, 13);
			chkShowClosed.TabIndex = 1;
			chkShowClosed.CheckedChanged += new EventHandler(this.chkShowClosed_CheckedChanged);
			
			issueList.AutoScroll = true;
			issueList.Dock = DockStyle.Fill;
			issueList.Location = new Point(1, 52);
			issueList.Name = "issueList";
			issueList.Size = new Size(318, 355);
			issueList.TabIndex = 17;
			issueList.SelectionChanged += new ExpandableList.SelectionChangedEventHandler(this.issueList_SelectionChanged);
			issueList.SelectionDoubleClicked += new ExpandableList.SelectionDoubleClickedEventHandler(this.issueList_SelectionDoubleClicked);
			
			AutoScroll = true;
			Controls.Add(issueList);
			Controls.Add(header);
			Controls.Add(PaneCaption1);
			DockPadding.All = 1;
			Name = "MiddlePane";
			Size = new Size(320, 408);
			header.ResumeLayout(false);
			ResumeLayout(false);
		}

		// a new row was selected
		private void issueList_SelectionChanged(DataRowView dr)
		{
			if (dr == null)
			{
				m_selectedID = 0;
			}
			else
			{
				m_selectedID = (int)dr["IssueID"];
			}
			
			m_selectedRow = dr;
			m_subject.CurrentItem = dr;
		}

		// show edit form for selected row
		private void issueList_SelectionDoubleClicked(DataRowView dr)
		{
			IssueEditForm f = new IssueEditForm((Form)TopLevelControl);
			f.Subject = m_subject;
			f.Show();
		}

		// the main data source has been updated
		private void Subject_IssueDataChanged(object sender, EventArgs e)
		{
			Cursor = Cursors.WaitCursor;
			
			//repopulate the list
			issueList.GroupList.Clear();
			issueList.DataSource = m_subject.CurrentView;
			int prevGroupID = 0;
			
			//go through and create the different groups
			foreach (DataRowView row in m_subject.CurrentView)
			{
				int groupID = (int)row["IssueTypeID"];
				if (groupID != prevGroupID)
				{
					// came across a new group
					issueList.GroupList.Add(new GroupItem((string)row["IssueType"], groupID.ToString()));
					prevGroupID = groupID;
				}
			}
			
			//done populating the list, tell it to layout everything
			issueList.LayoutSections();
			
			if (issueList.GroupList.Count == 0)
			{
				issueList.SelectEmptyRow(true);
			}
			else 
			{
				// select the current row, if that does not exist,
				// select the first row in the first group
				if (!issueList.SelectRow(m_selectedRow, true))
				{
					issueList.SelectFirstRow(true);
				}
			}
			
			Cursor = Cursors.Default;
		}

		private void labelShowClosed_Click(object sender, EventArgs e)
		{
			// the checkbox control does not support transparency (with System FlatStyle), 
			// use a label control instead, clicking on the label should	be the same 
			// as clicking on the checkbox
			chkShowClosed.Checked = !(chkShowClosed.Checked);
			chkShowClosed_CheckedChanged(Parent, EventArgs.Empty);
		}

		private void chkShowClosed_CheckedChanged(object sender, EventArgs e)
		{
			if (m_subject != null)
			{
				m_subject.ShowClosedIssues = chkShowClosed.Checked;
			}
		}
	}
}