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

using pdftron;
using pdftron.PDF;
using pdftron.Filters;
using pdftron.Common;
using PDFTRON.SDF;


namespace PDFViewSimpleCS
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class PDFViewSimple : System.Windows.Forms.Form
	{
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
		private System.Windows.Forms.MainMenu mainMenu1;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem5;
		private System.Windows.Forms.MenuItem MenuFileOpen;
		private System.Windows.Forms.MenuItem MenuFileExit;
		
		private PDFView _pdfview;
		private PDFDoc _pdfdoc;

		public PDFViewSimple()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();
			_pdfview = new PDFView();
			_pdfview.Location = new Point(0, 0);
			_pdfview.Dock = System.Windows.Forms.DockStyle.Fill;
			//_pdfview.SetErrorReportProc(new PDFViewErrorDelegate(ErrorMsg), null);
			//_pdfview.SetCurrentPageProc(new PDFViewCurrentPageDelegate(UpdateStatusBar), main_form);
			Controls.Add(_pdfview);
		}

		/// <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()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(PDFViewSimple));
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.MenuFileOpen = new System.Windows.Forms.MenuItem();
			this.menuItem5 = new System.Windows.Forms.MenuItem();
			this.MenuFileExit = new System.Windows.Forms.MenuItem();
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem1});
			// 
			// menuItem1
			// 
			this.menuItem1.Index = 0;
			this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.MenuFileOpen,
																					  this.menuItem5,
																					  this.MenuFileExit});
			this.menuItem1.Text = "File";
			// 
			// MenuFileOpen
			// 
			this.MenuFileOpen.Index = 0;
			this.MenuFileOpen.Text = "Open..";
			this.MenuFileOpen.Click += new System.EventHandler(this.menuFileOpen_Click);
			// 
			// menuItem5
			// 
			this.menuItem5.Index = 1;
			this.menuItem5.Text = "-";
			// 
			// MenuFileExit
			// 
			this.MenuFileExit.Index = 2;
			this.MenuFileExit.Text = "Exit";
			this.MenuFileExit.Click += new System.EventHandler(this.MenuFileExit_Click);
			// 
			// PDFViewSimple
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 15);
			this.ClientSize = new System.Drawing.Size(744, 512);
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.Menu = this.mainMenu1;
			this.Name = "PDFViewSimple";
			this.Text = "PDFViewSimple";

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread] 		
		static void Main() 
		{
			PDFNet.Initialize();
			
			// Search for PDFNet resource file (i.e. 'pdfnet.res').
			string resource_path = "resources";
			bool found = false;
			for (int i=0; !found && i<7; ++i) 
			{
				found = PDFNet.SetResourcesPath(resource_path);
				if (!found) resource_path = "../" + resource_path;
			}
		
			if (!found) 
			{
				MessageBox.Show("PDFNet resource file 'pdfnet.res' was not found.\nSome files may not render properly.", "PDFView Error");
			}
			
			Application.Run(new PDFViewSimple());

			PDFNet.Terminate();
		}


		private void menuFileOpen_Click(object sender, System.EventArgs e)
		{
			OpenFileDialog dlg = new OpenFileDialog();
			dlg.CheckFileExists = true;
			dlg.CheckPathExists = true;
			dlg.Filter="PDF (*.pdf)|*.pdf|All files (*.*)|*.*";
			dlg.DefaultExt = ".pdf";

			if(dlg.ShowDialog() == DialogResult.OK) 
			{
				OpenPDF(dlg.FileName); 
			}
		}

		public bool OpenPDF(String filename)
		{
			try 
			{
				_pdfdoc = new PDFDoc(filename);
				if (!_pdfdoc.InitSecurityHandler())  // In case _pdfdoc is encrypted
				{
					//a password is required so create a dialog
					//to allow the user to authenticate
					AuthorizeDlg dlg = new AuthorizeDlg();
					int Count=0;
					bool failed=true;
					
					//The user has three opportunities to enter
					//the correct password
					while(Count<3 && failed)
					{
						DialogResult res=dlg.ShowDialog();
						if (res == DialogResult.OK &&
							_pdfdoc.InitStdSecurityHandler(dlg.pass.Text)) 
						{
							failed=false;
						}
						else if(res == DialogResult.Cancel)
						{
							break;
						}
						else
						{
							MessageBox.Show("Authorize Failed...", "PDFView Error");
							Count++;
						}
					}

					if(failed)
					{
						//user either failed to authenticate three
						//times or pressed cancel
						MessageBox.Show("Document authentication error", "PDFView Error");
						return false;
					}

				}

				_pdfview.SetDoc(_pdfdoc);
			}
			catch(PDFNetException ex)
			{
				MessageBox.Show(ex.Message);
				return false;
			}
			catch(Exception ex)
			{
				MessageBox.Show(ex.ToString());
				return false;
			}

			this.Text = filename;  // Set the title
			return true;
		}

		private void MenuFileExit_Click(object sender, System.EventArgs e)
		{
			//when the user clicks exit, exit the application
			Application.Exit();
		}
	
	}
	
	

}