using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using System.Windows.Forms;
using System.Xml.Serialization;

namespace RSACryptoPad
{
	public class MainForm : Form
	{
		private FontDialog fontDialog;
		private IContainer components;
		private Label processingLabel;
		private MenuItem aboutMenuItem;
		private MenuItem copyMenuItem;
		private MenuItem cutMenuItem;
		private MenuItem decryptMenuItem;
		private MenuItem deleteMenuItem;
		private MenuItem editMenuItem;
		private MenuItem encryptionMenuItem;
		private MenuItem encryptMenuItem;
		private MenuItem exitMenuItem;
		private MenuItem fileMenuItem;
		private MenuItem fontMenuItem;
		private MenuItem formatMenuItem;
		private MenuItem generateKeyPairMenuItem;
		private MenuItem helpMenuItem;
		private MenuItem newFileMenuItem;
		private MenuItem openFileMenuItem;
		private MenuItem pasteMenuItem;
		private MenuItem saveAsFileMenuItem;
		private MenuItem saveMenuItem;
		private MenuItem selectAllmenuItem;
		private MenuItem separator1;
		private MenuItem separator2;
		private MenuItem separator3;
		private MenuItem undoMenuItem;
		private MenuItem wordWrapMenuItem;
		private MainMenu mainMenu;
		private OpenFileDialog openFileDialog;
		private Panel panel;
		private PictureBox pictureBox;
		private SaveFileDialog saveFileDialog;
		private TextBox inputTextBox;
		
		public static int currentBitStrength = 0;
		private bool cleanForm = true;
		private string currentFileName = "Untitled";		
		
		public delegate void FinishedProcessDelegate();
		public delegate void UpdateBitStrengthDelegate( int bitStrength );
		public delegate void UpdateTextDelegate( string inputText );
		
		public MainForm()
		{ InitializeComponent(); }

		public MainForm( string fileName )
		{
			InitializeComponent();
			if( File.Exists( fileName ) )
			{
				currentFileName = fileName;
				StreamReader streamReader = new StreamReader( fileName, true );
				SetText( streamReader.ReadToEnd() );
				streamReader.Close();				
				this.Text = GetFileName( fileName ) + " - RSACryptoPad";
				cleanForm = true;
			}
		}
		
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if( components != null )
				{ components.Dispose(); }
			}
			base.Dispose( disposing );
		}
		
		private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container();
			System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager( typeof( MainForm ) );
			this.mainMenu = new System.Windows.Forms.MainMenu( this.components );
			this.fileMenuItem = new System.Windows.Forms.MenuItem();
			this.newFileMenuItem = new System.Windows.Forms.MenuItem();
			this.openFileMenuItem = new System.Windows.Forms.MenuItem();
			this.saveMenuItem = new System.Windows.Forms.MenuItem();
			this.saveAsFileMenuItem = new System.Windows.Forms.MenuItem();
			this.separator1 = new System.Windows.Forms.MenuItem();
			this.exitMenuItem = new System.Windows.Forms.MenuItem();
			this.editMenuItem = new System.Windows.Forms.MenuItem();
			this.undoMenuItem = new System.Windows.Forms.MenuItem();
			this.separator2 = new System.Windows.Forms.MenuItem();
			this.cutMenuItem = new System.Windows.Forms.MenuItem();
			this.copyMenuItem = new System.Windows.Forms.MenuItem();
			this.pasteMenuItem = new System.Windows.Forms.MenuItem();
			this.deleteMenuItem = new System.Windows.Forms.MenuItem();
			this.separator3 = new System.Windows.Forms.MenuItem();
			this.selectAllmenuItem = new System.Windows.Forms.MenuItem();
			this.formatMenuItem = new System.Windows.Forms.MenuItem();
			this.wordWrapMenuItem = new System.Windows.Forms.MenuItem();
			this.fontMenuItem = new System.Windows.Forms.MenuItem();
			this.encryptionMenuItem = new System.Windows.Forms.MenuItem();
			this.encryptMenuItem = new System.Windows.Forms.MenuItem();
			this.decryptMenuItem = new System.Windows.Forms.MenuItem();
			this.generateKeyPairMenuItem = new System.Windows.Forms.MenuItem();
			this.helpMenuItem = new System.Windows.Forms.MenuItem();
			this.aboutMenuItem = new System.Windows.Forms.MenuItem();
			this.inputTextBox = new System.Windows.Forms.TextBox();
			this.openFileDialog = new System.Windows.Forms.OpenFileDialog();
			this.saveFileDialog = new System.Windows.Forms.SaveFileDialog();
			this.fontDialog = new System.Windows.Forms.FontDialog();
			this.panel = new System.Windows.Forms.Panel();
			this.processingLabel = new System.Windows.Forms.Label();
			this.pictureBox = new System.Windows.Forms.PictureBox();
			this.panel.SuspendLayout();
			( ( System.ComponentModel.ISupportInitialize )( this.pictureBox ) ).BeginInit();
			this.SuspendLayout();
			// 
			// mainMenu
			// 
			this.mainMenu.MenuItems.AddRange( new System.Windows.Forms.MenuItem[] { this.fileMenuItem, this.editMenuItem, this.formatMenuItem, this.encryptionMenuItem, this.helpMenuItem} );
			// 
			// fileMenuItem
			// 
			this.fileMenuItem.Index = 0;
			this.fileMenuItem.MenuItems.AddRange( new System.Windows.Forms.MenuItem[] { this.newFileMenuItem, this.openFileMenuItem, this.saveMenuItem, this.saveAsFileMenuItem, this.separator1, this.exitMenuItem} );
			this.fileMenuItem.Text = "File";
			// 
			// newFileMenuItem
			// 
			this.newFileMenuItem.Index = 0;
			this.newFileMenuItem.Shortcut = System.Windows.Forms.Shortcut.CtrlN;
			this.newFileMenuItem.Text = "New";
			this.newFileMenuItem.Click += new System.EventHandler( this.newFileMenuItem_Click );
			// 
			// openFileMenuItem
			// 
			this.openFileMenuItem.Index = 1;
			this.openFileMenuItem.Shortcut = System.Windows.Forms.Shortcut.CtrlO;
			this.openFileMenuItem.Text = "Open...";
			this.openFileMenuItem.Click += new System.EventHandler( this.openFileMenuItem_Click );
			// 
			// saveMenuItem
			// 
			this.saveMenuItem.Index = 2;
			this.saveMenuItem.Shortcut = System.Windows.Forms.Shortcut.CtrlS;
			this.saveMenuItem.Text = "Save...";
			this.saveMenuItem.Click += new System.EventHandler( this.saveMenuItem_Click );
			// 
			// saveAsFileMenuItem
			// 
			this.saveAsFileMenuItem.Index = 3;
			this.saveAsFileMenuItem.Shortcut = System.Windows.Forms.Shortcut.CtrlS;
			this.saveAsFileMenuItem.Text = "Save As... ";
			this.saveAsFileMenuItem.Click += new System.EventHandler( this.saveAsFileMenuItem_Click );
			// 
			// separator1
			// 
			this.separator1.Index = 4;
			this.separator1.Text = "-";
			// 
			// exitMenuItem
			// 
			this.exitMenuItem.Index = 5;
			this.exitMenuItem.Text = "Exit ";
			this.exitMenuItem.Click += new System.EventHandler( this.exitMenuItem_Click );
			// 
			// editMenuItem
			// 
			this.editMenuItem.Index = 1;
			this.editMenuItem.MenuItems.AddRange( new System.Windows.Forms.MenuItem[] { this.undoMenuItem, this.separator2, this.cutMenuItem, this.copyMenuItem, this.pasteMenuItem, this.deleteMenuItem, this.separator3, this.selectAllmenuItem} );
			this.editMenuItem.Text = "Edit";
			// 
			// undoMenuItem
			// 
			this.undoMenuItem.Index = 0;
			this.undoMenuItem.Shortcut = System.Windows.Forms.Shortcut.CtrlZ;
			this.undoMenuItem.Text = "Undo";
			this.undoMenuItem.Click += new System.EventHandler( this.undoMenuItem_Click );
			// 
			// separator2
			// 
			this.separator2.Index = 1;
			this.separator2.Text = "-";
			// 
			// cutMenuItem
			// 
			this.cutMenuItem.Index = 2;
			this.cutMenuItem.Shortcut = System.Windows.Forms.Shortcut.CtrlX;
			this.cutMenuItem.Text = "Cut";
			this.cutMenuItem.Click += new System.EventHandler( this.cutMenuItem_Click );
			// 
			// copyMenuItem
			// 
			this.copyMenuItem.Index = 3;
			this.copyMenuItem.Shortcut = System.Windows.Forms.Shortcut.CtrlC;
			this.copyMenuItem.Text = "Copy";
			this.copyMenuItem.Click += new System.EventHandler( this.copyMenuItem_Click );
			// 
			// pasteMenuItem
			// 
			this.pasteMenuItem.Index = 4;
			this.pasteMenuItem.Shortcut = System.Windows.Forms.Shortcut.CtrlV;
			this.pasteMenuItem.Text = "Paste";
			this.pasteMenuItem.Click += new System.EventHandler( this.pasteMenuItem_Click );
			// 
			// deleteMenuItem
			// 
			this.deleteMenuItem.Index = 5;
			this.deleteMenuItem.Shortcut = System.Windows.Forms.Shortcut.Del;
			this.deleteMenuItem.Text = "Delete";
			this.deleteMenuItem.Click += new System.EventHandler( this.deleteMenuItem_Click );
			// 
			// separator3
			// 
			this.separator3.Index = 6;
			this.separator3.Text = "-";
			// 
			// selectAllmenuItem
			// 
			this.selectAllmenuItem.Index = 7;
			this.selectAllmenuItem.Shortcut = System.Windows.Forms.Shortcut.CtrlA;
			this.selectAllmenuItem.Text = "Select All";
			this.selectAllmenuItem.Click += new System.EventHandler( this.selectAllmenuItem_Click );
			// 
			// formatMenuItem
			// 
			this.formatMenuItem.Index = 2;
			this.formatMenuItem.MenuItems.AddRange( new System.Windows.Forms.MenuItem[] { this.wordWrapMenuItem, this.fontMenuItem} );
			this.formatMenuItem.Text = "Format";
			// 
			// wordWrapMenuItem
			// 
			this.wordWrapMenuItem.Checked = true;
			this.wordWrapMenuItem.Index = 0;
			this.wordWrapMenuItem.RadioCheck = true;
			this.wordWrapMenuItem.Text = "Word Wrap";
			this.wordWrapMenuItem.Click += new System.EventHandler( this.wordWrapMenuItem_Click );
			// 
			// fontMenuItem
			// 
			this.fontMenuItem.Index = 1;
			this.fontMenuItem.Text = "Font...";
			this.fontMenuItem.Click += new System.EventHandler( this.fontMenuItem_Click );
			// 
			// encryptionMenuItem
			// 
			this.encryptionMenuItem.Index = 3;
			this.encryptionMenuItem.MenuItems.AddRange( new System.Windows.Forms.MenuItem[] { this.encryptMenuItem, this.decryptMenuItem, this.generateKeyPairMenuItem} );
			this.encryptionMenuItem.Text = "Encryption";
			// 
			// encryptMenuItem
			// 
			this.encryptMenuItem.Index = 0;
			this.encryptMenuItem.Text = "Encrypt...";
			this.encryptMenuItem.Click += new System.EventHandler( this.encryptMenuItem_Click );
			// 
			// decryptMenuItem
			// 
			this.decryptMenuItem.Index = 1;
			this.decryptMenuItem.Text = "Decrypt...";
			this.decryptMenuItem.Click += new System.EventHandler( this.decryptMenuItem_Click );
			// 
			// generateKeyPairMenuItem
			// 
			this.generateKeyPairMenuItem.Index = 2;
			this.generateKeyPairMenuItem.Text = "Generate Key Pair...";
			this.generateKeyPairMenuItem.Click += new System.EventHandler( this.generateKeyPairMenuItem_Click );
			// 
			// helpMenuItem
			// 
			this.helpMenuItem.Index = 4;
			this.helpMenuItem.MenuItems.AddRange( new System.Windows.Forms.MenuItem[] { this.aboutMenuItem} );
			this.helpMenuItem.Text = "Help";
			// 
			// aboutMenuItem
			// 
			this.aboutMenuItem.Index = 0;
			this.aboutMenuItem.Text = "About RSACryptoPad";
			this.aboutMenuItem.Click += new System.EventHandler( this.aboutMenuItem_Click );
			// 
			// inputTextBox
			// 
			this.inputTextBox.AcceptsReturn = true;
			this.inputTextBox.AcceptsTab = true;
			this.inputTextBox.AllowDrop = true;
			this.inputTextBox.BackColor = System.Drawing.Color.Black;
			this.inputTextBox.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
			this.inputTextBox.Font = new System.Drawing.Font( "Lucida Console", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ( ( byte )( 0 ) ) );
			this.inputTextBox.ForeColor = System.Drawing.Color.LightGreen;
			this.inputTextBox.Location = new System.Drawing.Point( 0, 0 );
			this.inputTextBox.Multiline = true;
			this.inputTextBox.Name = "inputTextBox";
			this.inputTextBox.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.inputTextBox.Size = new System.Drawing.Size( 634, 427 );
			this.inputTextBox.TabIndex = 1;
			this.inputTextBox.TabStop = false;
			this.inputTextBox.DragDrop += new System.Windows.Forms.DragEventHandler( this.inputTextBox_DragDrop );
			this.inputTextBox.DragEnter += new System.Windows.Forms.DragEventHandler( this.inputTextBox_DragEnter );
			this.inputTextBox.TextChanged += new System.EventHandler( this.inputTextBox_TextChanged );
			// 
			// fontDialog
			// 
			this.fontDialog.Font = new System.Drawing.Font( "Arial", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ( ( byte )( 0 ) ) );
			this.fontDialog.FontMustExist = true;
			this.fontDialog.ShowEffects = false;
			// 
			// panel
			// 
			this.panel.BackColor = System.Drawing.Color.Black;
			this.panel.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.panel.Controls.Add( this.processingLabel );
			this.panel.Controls.Add( this.pictureBox );
			this.panel.ForeColor = System.Drawing.Color.Lime;
			this.panel.Location = new System.Drawing.Point( -1, 411 );
			this.panel.Name = "panel";
			this.panel.Size = new System.Drawing.Size( 200, 82 );
			this.panel.TabIndex = 0;
			this.panel.Visible = false;
			// 
			// processingLabel
			// 
			this.processingLabel.Location = new System.Drawing.Point( 8, 48 );