/// <summary>
/// A simple ListView example.
/// This diet list contains Calorie items and Fat Calorie and Description
/// subItems.
/// 
/// Note:
/// <ol>
/// <li>  The use of subscripts to get to the item and subitem collections
/// <li>  The use of mouse click position to determine the selected item
/// <li>  The get and set methods for dialog itemDialog should be rewritten
///       to use properties
/// <li>  The use of XML </summary> tags for comments.  Generate html docs.
///       Under the Tools menu select "Build comment web pages".
///       Be sure to set the correct directory, use browse.
///       <ul type = disc>
///       <li>  I use the subdirectory name docs.
///       <li>  Necessary files will be stored in docs.
///       <li>  A subdirectory docs/"projectName" will have the actual project 
///             htm pages.
///       </ul>
/// </ol>   
///  Mike Barnes 11/30/02 
/// </summary>

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


namespace ListView {

/// <summary>
/// The Form has: 
/// <ul>
/// <li>  ListView in the center.  The ListView has columns for 
///       Calories, Fat Calories, and an Item Descritpion field</li>
/// <li>  ToolBar on the right.  The toolBar has 3 buttons to
///       <ul type = "disc">
///       <li> add an item to the list</li>
///       <li> edit the selected item in the list </li>
///       <li> delete the selected item from the list</li>
///       </ul>
/// <li>  StatusBar to display usage and provide feedback</li>
/// </ul>
/// </summary>

  public class Form1 : System.Windows.Forms.Form
  {
    public System.Windows.Forms.ListView listView1;
    private System.Windows.Forms.ColumnHeader calorieHeader;
    private System.Windows.Forms.ColumnHeader fatCalorieHeader;
    private System.Windows.Forms.ColumnHeader descriptHeader;
    private System.Windows.Forms.StatusBar statusBar;
    private System.Windows.Forms.ImageList imageList1;
    private System.Windows.Forms.ToolBarButton addButton;
    private System.Windows.Forms.ToolBarButton editButton;
    private System.Windows.Forms.ToolBarButton deleteButton;
    private System.Windows.Forms.ToolBar toolBar;
    private System.ComponentModel.IContainer components;
    private int count, selectedIndex;
    private ListViewItem selectedItem;
    private ItemDialog itemDialog;    

    public Form1()  {
      //
      // Required for Windows Form Designer support
      //
      InitializeComponent();

      //
      // TODO: Add any constructor code after InitializeComponent call
      //
      count = 0;
      selectedIndex = 0;
      itemDialog = new ItemDialog();
      }

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    protected override void Dispose( bool disposing )  {
      if( disposing )
      {
        if (components != null) 
        {
          components.Dispose();
        }
      }
      base.Dispose( disposing );
    }

    #region Windows Form Designer generated code

    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
      this.components = new System.ComponentModel.Container();
      System.Resources.ResourceManager resources = 
        new System.Resources.ResourceManager(typeof(Form1));
      this.listView1 = new System.Windows.Forms.ListView();
      this.calorieHeader = new System.Windows.Forms.ColumnHeader();
      this.fatCalorieHeader = new System.Windows.Forms.ColumnHeader();
      this.descriptHeader = new System.Windows.Forms.ColumnHeader();
      this.statusBar = new System.Windows.Forms.StatusBar();
      this.imageList1 = new System.Windows.Forms.ImageList(this.components);
      this.addButton = new System.Windows.Forms.ToolBarButton();
      this.editButton = new System.Windows.Forms.ToolBarButton();
      this.deleteButton = new System.Windows.Forms.ToolBarButton();
      this.toolBar = new System.Windows.Forms.ToolBar();
      this.SuspendLayout();
      // 
      // listView1
      // 
      this.listView1.Activation = System.Windows.Forms.ItemActivation.OneClick;
      this.listView1.AutoArrange = false;
      this.listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
        this.calorieHeader,
        this.fatCalorieHeader,
        this.descriptHeader});
      this.listView1.Dock = System.Windows.Forms.DockStyle.Fill;
      this.listView1.FullRowSelect = true;
      this.listView1.GridLines = true;
      this.listView1.HeaderStyle = 
        System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
      this.listView1.ImeMode = System.Windows.Forms.ImeMode.AlphaFull;
      this.listView1.LabelEdit = true;
      this.listView1.MultiSelect = false;
      this.listView1.Name = "listView1";
      this.listView1.Size = new System.Drawing.Size(344, 273);
      this.listView1.TabIndex = 0;
      this.listView1.View = System.Windows.Forms.View.Details;
      this.listView1.MouseUp += 
        new System.Windows.Forms.MouseEventHandler(this.setSelectedIndex);
      // 
      // calorieHeader
      // 
      this.calorieHeader.Text = "Calories";
      // 
      // fatCalorieHeader
      // 
      this.fatCalorieHeader.Text = "Fat Cals";
      // 
      // descriptHeader
      // 
      this.descriptHeader.Text = "Description";
      this.descriptHeader.Width = 200;
      // 
      // statusBar
      // 
      this.statusBar.Location = new System.Drawing.Point(0, 251);
      this.statusBar.Name = "statusBar";
      this.statusBar.Size = new System.Drawing.Size(344, 22);
      this.statusBar.TabIndex = 1;
      this.statusBar.Text = "show selection item";
      // 
      // imageList1
      // 
      this.imageList1.ColorDepth = System.Windows.Forms.ColorDepth.Depth24Bit;
      this.imageList1.ImageSize = new System.Drawing.Size(16, 16);
      this.imageList1.ImageStream = 
        ((System.Windows.Forms.ImageListStreamer)
        (resources.GetObject("imageList1.ImageStream")));
      this.imageList1.TransparentColor = System.Drawing.Color.Transparent;
      // 
      // addButton
      // 
      this.addButton.ImageIndex = 0;
      this.addButton.ToolTipText = "Insert an item into list";
      // 
      // editButton
      // 
      this.editButton.ImageIndex = 1;
      this.editButton.ToolTipText = "edit the selected item";
      // 
      // deleteButton
      // 
      this.deleteButton.ImageIndex = 2;
      this.deleteButton.ToolTipText = "delete the current item";
      // 
      // toolBar
      // 
      this.toolBar.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
        this.addButton,
        this.editButton,
        this.deleteButton});
      this.toolBar.Dock = System.Windows.Forms.DockStyle.Right;
      this.toolBar.DropDownArrows = true;
      this.toolBar.ImageList = this.imageList1;
      this.toolBar.Location = new System.Drawing.Point(320, 0);
      this.toolBar.Name = "toolBar";
      this.toolBar.ShowToolTips = true;
      this.toolBar.Size = new System.Drawing.Size(24, 251);
      this.toolBar.TabIndex = 2;
      this.toolBar.ButtonClick += 
        new System.Windows.Forms.ToolBarButtonClickEventHandler
          (this.toolBar_ButtonClick);
      // 
      // Form1
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(344, 273);
      this.Controls.AddRange(new System.Windows.Forms.Control[] {
         this.toolBar,
         this.statusBar,
         this.listView1});
      this.Name = "Form1";
      this.Text = "Simple List View Example";
      this.ResumeLayout(false);

    }
    #endregion

    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main() 
    {
      Application.Run(new Form1());
    }

/// <summary>
/// Respond to button clicks from the toolbar.
/// Use e.Button property of the event arg to determine which toolbar button 
/// was clicked.
/// This delegate will display the itemDialog when adding or editing items.
/// Error conditions are reported in the statusBar.
/// </summary>
/// <param name="sender"> ToolBarButton</param>
/// <param name="e">  ToolBarButtonClickEventArgs </param>
    private void toolBar_ButtonClick(object sender, 
    System.Windows.Forms.ToolBarButtonClickEventArgs e)
    {
      if(e.Button == addButton){ 
        itemDialog.clear();
        if (DialogResult.OK == itemDialog.ShowDialog(this)) {
          listView1.Items.Insert(count, itemDialog.Calories);
          listView1.Items[count].SubItems.Add(itemDialog.FatCals);
          listView1.Items[count].SubItems.Add(itemDialog.Description);
          count++;
          statusBar.Text = "insert.  count = " + count.ToString();  }
        }
      else if (e.Button == editButton){
          if(selectedItem == null) {
            statusBar.Text = "Select an item before trying to edit";
            return; }
          itemDialog.Calories = listView1.Items[selectedIndex].Text;
          itemDialog.FatCals = selectedItem.SubItems[1].Text;
          itemDialog.Description = selectedItem.SubItems[2].Text;    
          if(DialogResult.OK == itemDialog.ShowDialog(this)) {
            listView1.Items[selectedIndex].Text = itemDialog.Calories;
            listView1.Items[selectedIndex].SubItems[1].Text = 
              itemDialog.FatCals;
            listView1.Items[selectedIndex].SubItems[2].Text = 
              itemDialog.Description;
            }
          statusBar.Text = "edit.  selected index = " + 
            selectedItem.ToString();}
      else if (e.Button == deleteButton) 
        if(selectedItem == null) 
            statusBar.Text = "Select an item before trying to delete";        
          else {
            count--;
            listView1.Items.RemoveAt(count);
            statusBar.Text = "delete.  count = " + count.ToString();}
          else statusBar.Text = "toolbar pushed";
      }  
  
/// <summary>
/// Mouse clicks in the listView are used to set:
/// <ul>
/// <li> selectedItem 
/// <li> selectedIndex
/// </ul>
/// </summary>
/// <param name="sender"> ListView </param>
/// <param name="e"> MouseEventArgs </param>
    private void setSelectedIndex(object sender, 
    System.Windows.Forms.MouseEventArgs e)
    {
    selectedItem = listView1.GetItemAt(e.X, e.Y);
    if (selectedItem != null) {
        selectedIndex = selectedItem.Index;
        statusBar.Text = "item at " + selectedIndex.ToString() +
           " is " + selectedItem.ToString();
        }
      else
        statusBar.Text = "no item selected";
    }
  }
}