Implementing WS-SecureConversation in Microsoft IssueVision

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

namespace IssueVision
{
	public class IssueNewForm : Form, IObserver
	{
		private Label labelTitle;
		private TextBox txtTitle;
		private Label labelAssigned;
		private Label labelIssue;
		private PaneCaption paneBack;
		private Button btnCancel;
		private Panel Panel11;
		private Button btnSave;
		private PaneCaption paneHeader;
		private TextBox txtComment;
		private ComboBox cmbAssignedTo;
		private ComboBox cmbIssueType;

		private IssueSubject m_subject = null;
		private static string m_lastAssignedTo = string.Empty;
		private static string m_lastIssueType = string.Empty;

		private IContainer components = null;

		public ISubject Subject
		{
			set
			{
				m_subject = (IssueSubject)value;
			}
		}

		public IssueNewForm()
		{
			InitializeComponent();
		}

		public IssueNewForm(Form ownerForm) : this()
		{
			Owner = ownerForm;
		}

		#region Windows Form Designer generated code
		protected override void Dispose(bool disposing)
		{
			if (disposing && components != null)
			{
				components.Dispose();
			}
			base.Dispose(disposing);
		}

		[DebuggerStepThroughAttribute()]
		private void InitializeComponent()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(IssueNewForm));
			this.Panel11 = new System.Windows.Forms.Panel();
			this.txtTitle = new System.Windows.Forms.TextBox();
			this.cmbAssignedTo = new System.Windows.Forms.ComboBox();
			this.cmbIssueType = new System.Windows.Forms.ComboBox();
			this.txtComment = new System.Windows.Forms.TextBox();
			this.labelIssue = new System.Windows.Forms.Label();
			this.labelAssigned = new System.Windows.Forms.Label();
			this.labelTitle = new System.Windows.Forms.Label();
			this.paneHeader = new IssueVision.PaneCaption();
			this.btnSave = new System.Windows.Forms.Button();
			this.btnCancel = new System.Windows.Forms.Button();
			this.paneBack = new IssueVision.PaneCaption();
			this.Panel11.SuspendLayout();
			this.SuspendLayout();
			// 
			// Panel11
			// 
			this.Panel11.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(222)), ((System.Byte)(231)), ((System.Byte)(255)));
			this.Panel11.Controls.Add(this.txtTitle);
			this.Panel11.Controls.Add(this.cmbAssignedTo);
			this.Panel11.Controls.Add(this.cmbIssueType);
			this.Panel11.Controls.Add(this.txtComment);
			this.Panel11.Controls.Add(this.labelIssue);
			this.Panel11.Controls.Add(this.labelAssigned);
			this.Panel11.Controls.Add(this.labelTitle);
			this.Panel11.DockPadding.Left = 8;
			this.Panel11.DockPadding.Right = 8;
			this.Panel11.Location = new System.Drawing.Point(8, 30);
			this.Panel11.Name = "Panel11";
			this.Panel11.Size = new System.Drawing.Size(256, 280);
			this.Panel11.TabIndex = 2;
			// 
			// txtTitle
			// 
			this.txtTitle.Location = new System.Drawing.Point(88, 72);
			this.txtTitle.MaxLength = 100;
			this.txtTitle.Name = "txtTitle";
			this.txtTitle.Size = new System.Drawing.Size(160, 20);
			this.txtTitle.TabIndex = 5;
			this.txtTitle.Text = "";
			this.txtTitle.TextChanged += new System.EventHandler(this.txtTitle_TextChanged);
			// 
			// cmbAssignedTo
			// 
			this.cmbAssignedTo.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
			this.cmbAssignedTo.Location = new System.Drawing.Point(88, 8);
			this.cmbAssignedTo.Name = "cmbAssignedTo";
			this.cmbAssignedTo.Size = new System.Drawing.Size(160, 21);
			this.cmbAssignedTo.TabIndex = 1;
			// 
			// cmbIssueType
			// 
			this.cmbIssueType.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
			this.cmbIssueType.Location = new System.Drawing.Point(88, 40);
			this.cmbIssueType.Name = "cmbIssueType";
			this.cmbIssueType.Size = new System.Drawing.Size(160, 21);
			this.cmbIssueType.TabIndex = 3;
			// 
			// txtComment
			// 
			this.txtComment.AcceptsReturn = true;
			this.txtComment.Location = new System.Drawing.Point(8, 104);
			this.txtComment.MaxLength = 2000;
			this.txtComment.Multiline = true;
			this.txtComment.Name = "txtComment";
			this.txtComment.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.txtComment.Size = new System.Drawing.Size(240, 164);
			this.txtComment.TabIndex = 6;
			this.txtComment.Text = "";
			// 
			// labelIssue
			// 
			this.labelIssue.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.labelIssue.Location = new System.Drawing.Point(8, 44);
			this.labelIssue.Name = "labelIssue";
			this.labelIssue.Size = new System.Drawing.Size(72, 16);
			this.labelIssue.TabIndex = 2;
			this.labelIssue.Text = "&Issue Type:";
			// 
			// labelAssigned
			// 
			this.labelAssigned.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.labelAssigned.Location = new System.Drawing.Point(8, 12);
			this.labelAssigned.Name = "labelAssigned";
			this.labelAssigned.Size = new System.Drawing.Size(72, 16);
			this.labelAssigned.TabIndex = 0;
			this.labelAssigned.Text = "A&ssigned To:";
			// 
			// labelTitle
			// 
			this.labelTitle.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.labelTitle.Location = new System.Drawing.Point(8, 76);
			this.labelTitle.Name = "labelTitle";
			this.labelTitle.Size = new System.Drawing.Size(72, 16);
			this.labelTitle.TabIndex = 4;
			this.labelTitle.Text = "&Title:";
			// 
			// paneHeader
			// 
			this.paneHeader.AllowActive = false;
			this.paneHeader.AntiAlias = false;
			this.paneHeader.Caption = "Issue";
			this.paneHeader.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.paneHeader.ForeColor = System.Drawing.SystemColors.AppWorkspace;
			this.paneHeader.InactiveGradientHighColor = System.Drawing.Color.FromArgb(((System.Byte)(175)), ((System.Byte)(200)), ((System.Byte)(245)));
			this.paneHeader.InactiveGradientLowColor = System.Drawing.Color.FromArgb(((System.Byte)(205)), ((System.Byte)(225)), ((System.Byte)(250)));
			this.paneHeader.InactiveTextColor = System.Drawing.Color.Black;
			this.paneHeader.Location = new System.Drawing.Point(8, 8);
			this.paneHeader.Name = "paneHeader";
			this.paneHeader.Size = new System.Drawing.Size(256, 22);
			this.paneHeader.TabIndex = 1;
			// 
			// btnSave
			// 
			this.btnSave.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(222)), ((System.Byte)(231)), ((System.Byte)(255)));
			this.btnSave.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.btnSave.Location = new System.Drawing.Point(104, 320);
			this.btnSave.Name = "btnSave";
			this.btnSave.TabIndex = 0;
			this.btnSave.Text = "Save";
			this.btnSave.Click += new System.EventHandler(this.btnSave_Click);
			// 
			// btnCancel
			// 
			this.btnCancel.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(222)), ((System.Byte)(231)), ((System.Byte)(255)));
			this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.btnCancel.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.btnCancel.Location = new System.Drawing.Point(192, 320);
			this.btnCancel.Name = "btnCancel";
			this.btnCancel.TabIndex = 1;
			this.btnCancel.Text = "Cancel";
			this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
			// 
			// paneBack
			// 
			this.paneBack.AllowActive = false;
			this.paneBack.AntiAlias = false;
			this.paneBack.Font = new System.Drawing.Font("Tahoma", 12F, System.Drawing.FontStyle.Bold);
			this.paneBack.InactiveGradientHighColor = System.Drawing.Color.FromArgb(((System.Byte)(222)), ((System.Byte)(231)), ((System.Byte)(255)));
			this.paneBack.InactiveGradientLowColor = System.Drawing.Color.FromArgb(((System.Byte)(165)), ((System.Byte)(199)), ((System.Byte)(255)));
			this.paneBack.Location = new System.Drawing.Point(0, 0);
			this.paneBack.Name = "paneBack";
			this.paneBack.Size = new System.Drawing.Size(272, 352);
			this.paneBack.TabIndex = 0;
			// 
			// IssueNewForm
			// 
			this.AcceptButton = this.btnSave;
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.CancelButton = this.btnCancel;
			this.ClientSize = new System.Drawing.Size(272, 350);
			this.Controls.Add(this.paneHeader);
			this.Controls.Add(this.btnSave);
			this.Controls.Add(this.btnCancel);
			this.Controls.Add(this.Panel11);
			this.Controls.Add(this.paneBack);
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.MaximizeBox = false;
			this.Name = "IssueNewForm";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
			this.Text = "New Issue";
			this.Load += new System.EventHandler(this.IssueNewForm_Load);
			this.Panel11.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		// Initialize the window, this includes setting the initial position
		// populating the comboboxes and enabling / disabling the OK button.
		private void IssueNewForm_Load(object sender, EventArgs e)
		{
			CenterWindow();
			LoadLookups();
			UpdateButtons();
		}

		// Save button was clicked, add new issue and close window.
		private void btnSave_Click(object sender, EventArgs e)
		{
			// Remember the settings so they can be restored next time. This
			// is a short-time persist, it's reset when the app restarts.
			m_lastAssignedTo = cmbAssignedTo.Text;
			m_lastIssueType = cmbIssueType.Text;
			
			//Add the new issue to the local dataset.
			m_subject.AddIssue(	(int)cmbAssignedTo.SelectedValue, 
								(int)cmbIssueType.SelectedValue, 
								txtTitle.Text.Trim(), 
								txtComment.Text.Trim());
			Close();
		}

		// Decided not to add a new issue, close the window.
		private void btnCancel_Click(object sender, EventArgs e)
		{
			Close();
		}

		// Center the window position to its owner.
		private void CenterWindow()
		{
			// Use default position if the owner is not specified.
			if (Owner != null)
			{
				// Center the window to its owner, could call Form.CenterWindow.
				Location = new Point(	Owner.Location.X + (Owner.Width - Width) / 2, 
										Owner.Location.Y + (Owner.Height - Height) / 2);
			}
		}

		// Populate the comboboxes with the lookup values.
		private void LoadLookups()
		{
			cmbAssignedTo.DataSource = m_subject.Staffers;
			cmbAssignedTo.DisplayMember = "DisplayName";
			cmbAssignedTo.ValueMember = "StafferID";
			cmbAssignedTo.Text = m_lastAssignedTo;
			
			cmbIssueType.DataSource = m_subject.IssueTypes;
			cmbIssueType.DisplayMember = "IssueType";
			cmbIssueType.ValueMember = "IssueTypeID";
			cmbIssueType.Text = m_lastIssueType;
		}

		// Enable / disable the OK button when the title changes.
		private void txtTitle_TextChanged(object sender, EventArgs e)
		{
			UpdateButtons();
		}

		// Disable the OK button if there is not a title.
		private void UpdateButtons()
		{
			btnSave.Enabled = txtTitle.Text.Trim().Length > 0;
		}
	}
}