using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.ComponentModel;
using System.Windows.Forms.Integration;

namespace IE_WPF
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        protected void RaisePropertyChanged( string thePropertyName )
        {
            if ( PropertyChanged != null )
            {
                PropertyChanged( this, new PropertyChangedEventArgs( thePropertyName ) );
            }
        }

        public MainWindow()
        {
            InitializeComponent();

            StatusBarText = String.Empty;
            IsHlrOffPushed = false;
            IsHlrOnPushed = true;
            IsZoomWinEnabled = true;

            #region menu operations

            CommandBinding aBind_New = new CommandBinding( IECommands.New );
            aBind_New.Executed += NewCommand_Executed;
            CommandBindings.Add( aBind_New );

            CommandBinding aBind_Close = new CommandBinding( IECommands.Close );
            aBind_Close.Executed += CloseCommand_Executed;
            aBind_Close.CanExecute += CloseCommand_CanExecute;
            CommandBindings.Add( aBind_Close );

            CommandBinding aBind_Quit = new CommandBinding( IECommands.Quit );
            aBind_Quit.Executed += QuitCommand_Executed;
            CommandBindings.Add( aBind_Quit );

            CommandBinding aBind_About = new CommandBinding( IECommands.About );
            aBind_About.Executed += AboutCommand_Executed;
            CommandBindings.Add( aBind_About );

            # endregion

            PreviewKeyDown += new KeyEventHandler( OnPreviewKeyDown );
            PreviewKeyUp += new KeyEventHandler( OnPreviewKeyUp );
        }

        private String myStatusBarText;
        public String StatusBarText
        {
            get
            {
                return myStatusBarText;
            }
            private set
            {
                myStatusBarText = value;
                RaisePropertyChanged( "StatusBarText" );
            }
        }

        private bool isHlrOffPushed;
        public Boolean IsHlrOffPushed
        {
            get
            {
                return isHlrOffPushed;
            }
            set
            {
                isHlrOffPushed = value;
                RaisePropertyChanged("isHlrOffPushed");
            }
        }

        private bool isHlrOnPushed;
        public Boolean IsHlrOnPushed
        {
            get
            {
                return isHlrOnPushed;
            }
            set
            {
                isHlrOnPushed = value;
                RaisePropertyChanged("IsHlrOnPushed");
            }
        }

        private bool isZoomWinEnabled;
        public Boolean IsZoomWinEnabled
        {
            get
            {
                return isZoomWinEnabled;
            }
            set
            {
                isZoomWinEnabled = value;
                RaisePropertyChanged("IsZoomWinEnabled");
            }
        }

        private OCCViewer ActiveViewer
        {
            get
            {
                if ( !IsDocumentOpen )
                {
                    return null;
                }

                WindowsFormsHost aHost = ( ViewPanel.SelectedContent ) as WindowsFormsHost;
                if( aHost == null )
                {
                    return null;
                }

                return aHost.Child as OCCViewer;
            }
        }

        public Boolean IsDocumentOpen
        {
            get
            {
                return ViewPanel.Items.Count > 0;
            }
        }

        private int myDocumentCounter = 1;

        private void NewCommand_Executed( object sender, ExecutedRoutedEventArgs e )
        {
            WindowsFormsHost aHost = new WindowsFormsHost();
            OCCViewer aForm = new OCCViewer();
            aForm.Show();
            aHost.Child = aForm;

            TabItem aNewTab = new TabItem();
            aNewTab.Content = aHost;
            aNewTab.IsSelected = true;
            aNewTab.Header = "Document " + myDocumentCounter.ToString();
            myDocumentCounter++;

            ViewPanel.Items.Add( aNewTab );

            // update XAML property
            RaisePropertyChanged("IsDocumentOpen");
        }

        private void CloseCommand_Executed(object sender, ExecutedRoutedEventArgs e)
        {
            if ( ViewPanel.Items.Count > 0 )
            {
                ViewPanel.Items.Remove( ViewPanel.SelectedItem );
            }

            // update XAML property
            RaisePropertyChanged( "IsDocumentOpen" );
        }

        private void CloseCommand_CanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            e.CanExecute = IsDocumentOpen;
        }

        private void QuitCommand_Executed( object sender, ExecutedRoutedEventArgs e )
        {
            this.Close();
        }

        private void ImportBRep_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.ImportModel( ModelFormat.BREP );
            }
        }

        private void ImportIges_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.ImportModel( ModelFormat.IGES );
            }
        }

        private void ImportStep_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.ImportModel( ModelFormat.STEP );
            }
        }

        private void ExportBRep_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.ExportModel( ModelFormat.BREP );
            }
        }

        private void ExportStep_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.ExportModel( ModelFormat.STEP );
            }
        }

        private void ExportIges_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.ExportModel( ModelFormat.IGES );
            }
        }

        private void ExportStl_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.ExportModel( ModelFormat.STL );
            }
        }

        private void ExportVrml_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.ExportModel( ModelFormat.VRML );
            }
        }

        private void ExportImage_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.ExportModel( ModelFormat.IMAGE );
            }
        }

        private void FitAllBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.FitAll();
            }
        }

        private void ZoomWindowBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                IsZoomWinEnabled = false;
                ActiveViewer.ZoomWindow();
            }
        }

        private void DynamicZoomingBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.DynamicZooming();
            }
        }

        private void DynamicPanningBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.DynamicPanning();
            }
        }

        private void GlobalPanningBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.GlobalPanning();
            }
        }

        private void FrontBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.FrontView();
            }
        }

        private void BackBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.BackView();
            }
        }

        private void TopBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.TopView();
            }
        }

        private void BottomBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.BottomView();
            }
        }

        private void LeftBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.LeftView();
            }
        }

        private void RightBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.RightView();
            }
        }

        private void AxoBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.AxoView();
            }
        }

        private void ResetBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.Reset();
            }
        }

        private void DynamicRotationBtn_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.DynamicRotation();
            }
        }

        private void HiddenOffBtn_Click( object sender, RoutedEventArgs e )
        {
            IsHlrOffPushed = true;
            IsHlrOnPushed = false;
            if ( ActiveViewer != null )
            {
                ActiveViewer.HiddenOff();
            }
        }

        private void HiddenOnBtn_Click( object sender, RoutedEventArgs e )
        {
            IsHlrOffPushed = false;
            IsHlrOnPushed = true;
            if (ActiveViewer != null)
            {
                ActiveViewer.HiddenOn();
            }
        }

        private void AboutCommand_Executed( object sender, ExecutedRoutedEventArgs e )
        {
            AboutDialog aDlg = new AboutDialog();
            aDlg.ShowDialog();
        }

        private void ToolBar_MouseEnter( object sender, MouseEventArgs e )
        {
            StatusBarText = "Toolbar";
        }

        private void DocumentToolBar_MouseEnter(object sender, MouseEventArgs e)
        {
            StatusBarText = "Document toolbar";
        }

        private void ViewToolBar_MouseEnter(object sender, MouseEventArgs e)
        {
            StatusBarText = "View toolbar";
        }

        private void ToolBar_MouseLeave( object sender, MouseEventArgs e )
        {
            StatusBarText = "";
        }

        public void OnZoomingFinished( object sender, EventArgs e )
        {
            IsZoomWinEnabled = true;
        }

        public bool IsWireframeEnabled
        {
            get
            {
                if ( ActiveViewer != null )
                {
                    return ActiveViewer.IsWireframeEnabled;
                }
                return false;
            }
        }

        private void Wireframe_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.Wireframe();
            }
        }

        private void Shading_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.Shading();
            }
        }

        public bool IsShadingEnabled
        {
            get
            {
                if ( ActiveViewer != null )
                {
                    return ActiveViewer.IsShadingEnabled;
                }
                return false;
            }
        }

        private void Color_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.Color();
            }
        }

        public bool IsColorEnabled
        {
            get
            {
                if ( ActiveViewer != null )
                {
                    return ActiveViewer.IsColorEnabled;
                }
                return false;
            }
        }

        private void Material_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.Material();
            }
        }

        public bool IsMaterialEnabled
        {
            get
            {
                if ( ActiveViewer != null )
                {
                    return ActiveViewer.IsMaterialEnabled;
                }
                return false;
            }
        }

        private void Transparency_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.Transparency();
            }
        }

        public bool IsTransparencyEnabled
        {
            get
            {
                if ( ActiveViewer != null )
                {
                    return ActiveViewer.IsTransparencyEnabled;
                }
                return false;
            }
        }

        private void Delete_Click( object sender, RoutedEventArgs e )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.Delete();
            }
        }

        public bool IsDeleteEnabled
        {
            get
            {
                if ( ActiveViewer != null )
                {
                    return ActiveViewer.IsDeleteEnabled;
                }
                return false;
            }
        }

        private void AvaliabiltyOfOperationToolbarChanged()
        {
            RaisePropertyChanged( "IsWireframeEnabled" );
            RaisePropertyChanged( "IsShadingEnabled" );
            RaisePropertyChanged( "IsTransparencyEnabled" );
            RaisePropertyChanged( "IsColorEnabled" );
            RaisePropertyChanged( "IsMaterialEnabled" );
            RaisePropertyChanged( "IsDeleteEnabled" );
        }

        public void OnAvaliabiltyOfOperationsChanged( object sender, EventArgs e )
        {
            AvaliabiltyOfOperationToolbarChanged();
        }

        private void OnViewerChanged( object sender, SelectionChangedEventArgs e )
        {
            if ( e.RemovedItems.Count > 0 )
            {
                WindowsFormsHost aHost = ( ( e.RemovedItems[0] as TabItem).Content ) as WindowsFormsHost;
                if( aHost == null )
                {
                    return;
                }
                OCCViewer aViewer = aHost.Child as OCCViewer;
                if( aViewer != null )
                {
                    aViewer.ZoomingFinished -= new EventHandler( OnZoomingFinished );
                    aViewer.AvaliabiltyOfOperationsChanged -= new EventHandler( OnAvaliabiltyOfOperationsChanged );
                }
            }

            if ( e.AddedItems.Count > 0 )
            {
                WindowsFormsHost aHost = ( (e.AddedItems[0] as TabItem).Content ) as WindowsFormsHost;
                if ( aHost == null )
                {
                    return;
                }
                OCCViewer aViewer = aHost.Child as OCCViewer;
                if ( aViewer != null )
                {
                    aViewer.ZoomingFinished += new EventHandler( OnZoomingFinished );
                    aViewer.AvaliabiltyOfOperationsChanged += new EventHandler( OnAvaliabiltyOfOperationsChanged );
                }
            }

            AvaliabiltyOfOperationToolbarChanged();
        }
 
        private void OnPreviewKeyDown( object sender, KeyEventArgs args )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.OnKeyDown( args.Key );
            }
        }

        private void OnPreviewKeyUp( object sender, KeyEventArgs args )
        {
            if ( ActiveViewer != null )
            {
                ActiveViewer.OnKeyUp();
            }
        }
    }
}