using Dragablz;
using ComPDFKitDemo.AnntControl;
using ComPDFKitDemo.PageEditor;
using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Media;
using ComPDFKit.PDFAnnotation;
using ComPDFKitViewer;
using ComPDFKitViewer.AnnotEvent;
using ComPDFKitViewer.PdfViewer;
using ComPDFKitViewer.AnnotView.Form;
using ComPDFKit.PDFAnnotation.Form;
using ComPDFKitDemo.Helper;
using ComPDFKit.PDFDocument;
using ComPDFKit.PDFPage;
using System.Linq;
using System.Threading.Tasks;
using ComPDFKitDemo.Encryption;
using System.Diagnostics;

namespace ComPDFKitDemo
{
    public partial class MainWindow : Window,INotifyPropertyChanged
    {
        private TabItem currentTab;
        private PDFViewerControl currentViewerCtrl;
        public List<string> filePathList;

        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged([CallerMemberName] string name = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
        }

        public MainWindow()
        {
            InitializeComponent();
            filePathList = new List<string>();
            DataContext = this;
            System.Windows.Forms.Application.EnableVisualStyles();
        }

        #region Event
        private void btnCollapsed_Clicked(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.CloseNavibar();
            }
        }

        private void btnExpand_Clicked(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.OpenNavibar();
            }
        }

        private void PDFTab_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            PDFViewerControl newViewer = GetCurrentViewer();
            if(currentViewerCtrl == newViewer)
                return;

            if (currentTab != null)
            {
                StackPanel sp = currentTab.Header as StackPanel;
            }

            currentViewerCtrl = GetCurrentViewer();
            if(currentViewerCtrl!=null)
            {
                ToolbarBottom.IsEnabled = true;
                UpdateSidewindowButtons();
                PagesTool.PdfViewer = currentViewerCtrl.currentViewer;
                ZoomTool.PdfViewer = currentViewerCtrl.currentViewer;
                ViewModelTool.PdfViewer = currentViewerCtrl.currentViewer;
                FitPageTool.PdfViewer = currentViewerCtrl.currentViewer;

                OnPropertyChanged("CanRedo");
                OnPropertyChanged("CanUndo");

                TextEditTool.IsChecked = false;
                TextSelectTool.IsChecked = false;
                FormEditTool.IsChecked = false;
                PanTool.IsChecked = false;
                SelectTool.IsChecked = false;
                SnapTool.IsChecked = false;
                switch (currentViewerCtrl.currentViewer.MouseMode)
                {
                    case MouseModes.TextEdit:
                        TextEditTool.IsChecked = true;
                        HideToolsPanel();
                        break;

                    case MouseModes.SelectTextTool:
                        TextSelectTool.IsChecked = true;
                        HideToolsPanel();
                        break;

                    case MouseModes.FormEditTool:
                        FormEditTool.IsChecked = true;
                        FormEditTool_Clicked(FormEditTool,new RoutedEventArgs());
                        break;

                    case MouseModes.PanTool:
                        PanTool.IsChecked = true;
                        PanTool_Clicked(PanTool, new RoutedEventArgs());
                        break;

                    default:
                        break;
                }
            }
            else
            {
                ToolbarBottom.IsEnabled = true;
                PagesTool.PdfViewer = null;
                ZoomTool.PdfViewer = null;
                ViewModelTool.PdfViewer = null;
                FitPageTool.PdfViewer = null;
            }
        }

        private void btnOpen_Clicked(object sender, RoutedEventArgs e)
        {
            var dlg = new OpenFileDialog();
            dlg.Multiselect = false;
            dlg.Filter = ComPDFKitDemo.Properties.Resources.OpenDialogFilter;

            if (dlg.ShowDialog() == true)
            {
                if (filePathList.Contains(dlg.FileName))
                    return;

                PDFViewerControl pdfViewer = new PDFViewerControl(this);
                if(pdfViewer.OpenPDF(dlg.FileName))
                {
                    string fileName = dlg.FileName.Substring(dlg.FileName.LastIndexOf("\\") + 1);
                    LoadViewer(pdfViewer, fileName);
                }
                CPDFDocument document = CPDFDocument.InitWithFilePath(dlg.FileName);
                CPDFPermissionsInfo permission = document.GetPermissionsInfo();
                Trace.WriteLine("AllowsCommenting = " + permission.AllowsCommenting);
                Trace.WriteLine("AllowsCopying =" + permission.AllowsCopying);
                Trace.WriteLine("AllowsDocumentAssembly =" + permission.AllowsDocumentAssembly);
                Trace.WriteLine("AllowsDocumentChanges =" + permission.AllowsDocumentChanges);
                Trace.WriteLine("AllowsFormFieldEntry =" + permission.AllowsFormFieldEntry);
                Trace.WriteLine("AllowsHighQualityPrinting =" + permission.AllowsHighQualityPrinting);
                Trace.WriteLine("AllowsPrinting =" + permission.AllowsPrinting);
            }
        }

        private void btnClose_Clicked(ItemActionCallbackArgs<TabablzControl> args)
        {
            TabItem tab = null;
            PDFViewerControl view = null;
            tab = args.DragablzItem.DataContext as TabItem;
            if(tab!=null)
            {
                view = GetViewerForTab(tab);
            }
            if (PDFTab.Items.Count == 1)
            {
                PDFTab.Items.Remove(tab);
                args.Cancel();
            }
            if (view!=null)
            {
                view.ClosePDF();
            }
          
        }

        private void btnSave_Clicked(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
                view.currentViewer.Document.WriteToLoadedPath();
        }

        private void ClearMouseToolState()
        {
            TextEditTool.IsChecked = false;
            TextSelectTool.IsChecked = false;
            FormEditTool.IsChecked = false;
            PanTool.IsChecked = false;
            SelectTool.IsChecked = false;
            SnapTool.IsChecked = false;
            OtherTools.IsChecked = false;
        }

        private void HideToolsPanel()
        {
            AnnotTools.Visibility = Visibility.Collapsed;
            FormTools.Visibility = Visibility.Collapsed;
            OtherToolsPanel.Visibility = Visibility.Collapsed;
        }
       
        private void TextEditTool_Clicked(object sender, RoutedEventArgs e)
        {
            ClearMouseToolState();
            TextEditTool.IsChecked = true;
            ClearToggleButtonState(AnnotTools);

            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.NoneSplit();
                view.SetMouseMode(MouseModes.TextEdit);
                HideToolsPanel();
            }
               
        }

        private void TextSelectTool_Clicked(object sender, RoutedEventArgs e)
        {
            ClearMouseToolState();
            TextSelectTool.IsChecked = true;
            ClearToggleButtonState(AnnotTools);

            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.SetMouseMode(MouseModes.SelectTextTool);
                HideToolsPanel();
            }
        }

        private void FormEditTool_Clicked(object sender, RoutedEventArgs e)
        {
            ClearMouseToolState();
            FormEditTool.IsChecked = true;
            ClearToggleButtonState(AnnotTools);

            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.SetMouseMode(MouseModes.FormEditTool);
                HideToolsPanel();
                FormTools.Visibility = Visibility.Visible;
            }
        }

        private void PanTool_Clicked(object sender, RoutedEventArgs e)
        {
            ClearMouseToolState();
            PanTool.IsChecked = true;
            ClearToggleButtonState(AnnotTools);
            ClearToggleButtonState(FormTools);

            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.SetMouseMode(MouseModes.PanTool);
                HideToolsPanel();
                AnnotTools.Visibility = Visibility.Visible;
            }
        }

        private void EnterPageEdit_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                var item = PDFTab.SelectedItem as TabItem;
                if (item == null)
                    return;
                var content = item.Content as Grid;
                if (content.Children.Count >= 2)
                {
                    var editor = content.Children[1] as PageEditControl;
                    if (editor != null)
                        editor.Visibility = Visibility.Visible;
                    return;
                }
                PageEditControl pageEditControl = new PageEditControl();
                pageEditControl.LoadThumbnails(currentViewerCtrl.currentViewer);
                pageEditControl.DragAddTab += PageEditControl_DragAddTab;
                content.Children.Add(pageEditControl);
                pageEditControl.Visibility = Visibility.Visible;
                return;
            }
            catch (Exception ex)
            {
                return;
            }

        }

        private void PageEditControl_DragAddTab(object sender, RoutedEventArgs e)
        {
            try
            {
                var path = sender as string;
                PDFViewerControl pdfViewer = new PDFViewerControl(this);
                if (pdfViewer.OpenPDF(path))
                {
                    string fileName = path.Substring(path.LastIndexOf("\\") + 1);
                    LoadViewer(pdfViewer, fileName);
                }
            }
            catch (Exception ex)
            {

            }
        }

        private void ExitPageEdit_Click(object sender, RoutedEventArgs e)
        {
            var item = PDFTab.SelectedItem as TabItem;
            if (item == null)
                return;
            var content = item.Content as Grid;
            if (!(content.Children.Count >= 2))
            {
                return;
            }
            var realchild = content.Children[1] as PageEditControl;
            if (realchild != null)
                realchild.Visibility = Visibility.Collapsed;
        }
        #endregion

        #region Method
        private void LoadViewer(PDFViewerControl view, string title)
        {
            TabItem item = new TabItem();

            // add a close button
            StackPanel tabHeaderStack = new StackPanel();
            tabHeaderStack.Orientation = Orientation.Horizontal;
            TextBlock tabLabel = new TextBlock();
            tabLabel.Text = title;
            tabHeaderStack.Children.Add(tabLabel);
            item.Header = tabHeaderStack;
            Grid grid = new Grid();
            grid.Children.Add(view);
            item.Content = grid;
            PDFTab.Items.Add(item);
            item.IsSelected = true;
        }

        public PDFViewerControl GetCurrentViewer()
        {
            PDFViewerControl view = null;
            for (int i = 0; i < PDFTab.Items.Count; ++i)
            {
                TabItem current = (TabItem)PDFTab.Items.GetItemAt(i);
                if (current.IsSelected)
                {
                    StackPanel sp = current.Header as StackPanel;
                    Grid g = (Grid)current.Content;
                    view = (PDFViewerControl)g.Children[0];
                    view.CurrentUndoManager.PropertyChanged -= CurrentUndoManager_PropertyChanged;
                    view.CurrentUndoManager.PropertyChanged += CurrentUndoManager_PropertyChanged;
                    currentTab = current;
                    break;
                }
            }
            return view;
        }

        private void CurrentUndoManager_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            OnPropertyChanged(e.PropertyName);
        }

        public bool CanUndo
        {
            get
            {
                PDFViewerControl view = GetCurrentViewer();
                if (view != null)
                {
                   return view.CurrentUndoManager.CanUndo;
                }
                return false;
            }
        }

        public bool CanRedo
        {
            get
            {
                PDFViewerControl view = GetCurrentViewer();
                if (view != null)
                {
                    return view.CurrentUndoManager.CanRedo;
                }
                return false;
            }
        }

        public void UpdateSidewindowButtons()
        {
            PDFViewerControl view = GetCurrentViewer();
            if (view == null)
                return;
            
            double length = view.NaviWidth;
            if (length > 10)
            {
                btn_collapse.IsEnabled = true;
            }
            else
            {
                btn_collapse.IsEnabled = false;
            }
            if (length < 200)
            {
                btn_expand.IsEnabled = true;
            }
            else
            {
                btn_expand.IsEnabled = false;
            }
        }

        public PDFViewerControl GetViewerForTab(TabItem tab)
        {
            StackPanel sp = tab.Header as StackPanel;
            Grid g = (Grid)tab.Content;
            return (PDFViewerControl)g.Children[0];
        }

        private TabItem GetCurrentTab()
        {
            TabItem item = null;
            for (int i = 0; i < PDFTab.Items.Count; ++i)
            {
                item = (TabItem)PDFTab.Items.GetItemAt(i);
                if (item.IsSelected)
                {
                    break;
                }
            }
            return item;
        }
        #endregion

        private void AnnotDemo_Click(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            ToggleButton clickBtn = sender as ToggleButton;
            if (view != null)
            {
                AnnotHandlerEventArgs annotArgs = null;
                Dictionary<AnnotAttrib, object> annotAttribsList = new Dictionary<AnnotAttrib, object>();
                switch (clickBtn.Tag.ToString())
                {
                    case "Square":
                        annotArgs = new SquareAnnotArgs();
                        ((SquareAnnotArgs)annotArgs).LineColor = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((SquareAnnotArgs)annotArgs).BgColor = GetCurrentViewer().AnnotSetControl.GetBgColor();
                       
                        ((SquareAnnotArgs)annotArgs).LineWidth = GetCurrentViewer().AnnotSetControl.GetLineWidth();
                        ((SquareAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        annotAttribsList[AnnotAttrib.Color]= ((SquareAnnotArgs)annotArgs).LineColor;
                        annotAttribsList[AnnotAttrib.FillColor] = ((SquareAnnotArgs)annotArgs).BgColor;
                        annotAttribsList[AnnotAttrib.Thickness]=((SquareAnnotArgs)annotArgs).LineWidth;
                        annotAttribsList[AnnotAttrib.Transparency]= ((SquareAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Circle":
                        annotArgs = new CircleAnnotArgs();
                        ((CircleAnnotArgs)annotArgs).LineColor = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((CircleAnnotArgs)annotArgs).BgColor = GetCurrentViewer().AnnotSetControl.GetBgColor();

                        ((CircleAnnotArgs)annotArgs).LineWidth = GetCurrentViewer().AnnotSetControl.GetLineWidth();
                        ((CircleAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        annotAttribsList[AnnotAttrib.Color] = ((CircleAnnotArgs)annotArgs).LineColor;
                        annotAttribsList[AnnotAttrib.FillColor]= ((CircleAnnotArgs)annotArgs).BgColor;
                        annotAttribsList[AnnotAttrib.Thickness] = ((CircleAnnotArgs)annotArgs).LineWidth;
                        annotAttribsList[AnnotAttrib.Transparency] = ((CircleAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Line":
                        annotArgs = new LineAnnotArgs();
                        ((LineAnnotArgs)annotArgs).LineColor = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((LineAnnotArgs)annotArgs).LineWidth = GetCurrentViewer().AnnotSetControl.GetLineWidth();
                        ((LineAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        annotAttribsList[AnnotAttrib.Color] = ((LineAnnotArgs)annotArgs).LineColor;
                        annotAttribsList[AnnotAttrib.Thickness] = ((LineAnnotArgs)annotArgs).LineWidth;
                        annotAttribsList[AnnotAttrib.Transparency]= ((LineAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "LineArrow":
                        annotArgs = new LineAnnotArgs();
                        ((LineAnnotArgs)annotArgs).LineColor = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((LineAnnotArgs)annotArgs).LineWidth = GetCurrentViewer().AnnotSetControl.GetLineWidth();
                        ((LineAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        ((LineAnnotArgs)annotArgs).TailLineType = C_LINE_TYPE.LINETYPE_ARROW;
                        annotAttribsList[AnnotAttrib.Color] = ((LineAnnotArgs)annotArgs).LineColor;
                        annotAttribsList[AnnotAttrib.LineEnd]= ((LineAnnotArgs)annotArgs).TailLineType;
                        annotAttribsList[AnnotAttrib.Thickness] = ((LineAnnotArgs)annotArgs).LineWidth;
                        annotAttribsList[AnnotAttrib.Transparency] = ((LineAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Ink":
                         annotArgs = new FreehandAnnotArgs();
                        ((FreehandAnnotArgs)annotArgs).InkColor = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((FreehandAnnotArgs)annotArgs).LineWidth = GetCurrentViewer().AnnotSetControl.GetLineWidth();
                        ((FreehandAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        annotAttribsList[AnnotAttrib.Color] = ((FreehandAnnotArgs)annotArgs).InkColor;
                        annotAttribsList[AnnotAttrib.Thickness] = ((FreehandAnnotArgs)annotArgs).LineWidth;
                        annotAttribsList[AnnotAttrib.Transparency] = ((FreehandAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Erase":
                        annotArgs = new EraseArgs();
                        ((EraseArgs)annotArgs).UIBorderColor = Colors.Gray;
                        ((EraseArgs)annotArgs).UIFillColor = Colors.Green;
                        ((EraseArgs)annotArgs).Thickness = 5;
                        ((EraseArgs)annotArgs).UIOpacity = 1;
                        break;

                    case "FreeText":
                        annotArgs = new FreeTextAnnotArgs();
                        ((FreeTextAnnotArgs)annotArgs).LineColor = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((FreeTextAnnotArgs)annotArgs).BgColor = GetCurrentViewer().AnnotSetControl.GetBgColor();

                        ((FreeTextAnnotArgs)annotArgs).LineWidth = GetCurrentViewer().AnnotSetControl.GetLineWidth();
                        ((FreeTextAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        ((FreeTextAnnotArgs)annotArgs).Align = TextAlignment.Left;
                        ((FreeTextAnnotArgs)annotArgs).FontColor = Colors.Red;
                        ((FreeTextAnnotArgs)annotArgs).FontStyle = FontStyles.Normal;
                        annotAttribsList[AnnotAttrib.Color] = ((FreeTextAnnotArgs)annotArgs).LineColor;
                        annotAttribsList[AnnotAttrib.FillColor] = ((FreeTextAnnotArgs)annotArgs).BgColor;
                        annotAttribsList[AnnotAttrib.Thickness] = ((FreeTextAnnotArgs)annotArgs).LineWidth;
                        annotAttribsList[AnnotAttrib.Transparency] = ((FreeTextAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.FontColor] = ((FreeTextAnnotArgs)annotArgs).FontColor;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Highlight":
                        annotArgs = new TextHighlightAnnotArgs();
                        ((TextHighlightAnnotArgs)annotArgs).Color = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((TextHighlightAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        annotAttribsList[AnnotAttrib.Color] = ((TextHighlightAnnotArgs)annotArgs).Color;
                        annotAttribsList[AnnotAttrib.Transparency] = ((TextHighlightAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Underline":
                        annotArgs = new TextUnderlineAnnotArgs();
                        ((TextUnderlineAnnotArgs)annotArgs).Color = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((TextUnderlineAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        annotAttribsList[AnnotAttrib.Color] = ((TextUnderlineAnnotArgs)annotArgs).Color;
                        annotAttribsList[AnnotAttrib.Transparency] = ((TextUnderlineAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Strikeout":
                        annotArgs = new TextStrikeoutAnnotArgs();
                        ((TextStrikeoutAnnotArgs)annotArgs).Color = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((TextStrikeoutAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        annotAttribsList[AnnotAttrib.Color]= ((TextStrikeoutAnnotArgs)annotArgs).Color;
                        annotAttribsList[AnnotAttrib.Transparency] = ((TextStrikeoutAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Squiggly":
                        annotArgs = new TextSquigglyAnnotArgs();
                        ((TextSquigglyAnnotArgs)annotArgs).Color = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((TextSquigglyAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        annotAttribsList[AnnotAttrib.Color] = ((TextSquigglyAnnotArgs)annotArgs).Color;
                        annotAttribsList[AnnotAttrib.Transparency] = ((TextSquigglyAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "StickyNote":
                        annotArgs = new StickyAnnotArgs();
                        ((StickyAnnotArgs)annotArgs).Color = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((StickyAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        ((StickyAnnotArgs)annotArgs).StickyNote = "hello world";
                        annotAttribsList[AnnotAttrib.Color] = ((StickyAnnotArgs)annotArgs).Color;
                        annotAttribsList[AnnotAttrib.Transparency] = ((StickyAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Picture":
                        annotArgs = new StampAnnotArgs();
                        StampAnnotArgs stampArgs = new StampAnnotArgs();
                        stampArgs.Opacity = 1;
                        stampArgs.Type = StampType.IMAGE_STAMP;
                        OpenFileDialog openFileDialog = new OpenFileDialog();
                        openFileDialog.Filter = "Image Files(*.jpg;*.jpeg;*.png;*.bmp)|*.jpg;*.jpeg;*.png;*.bmp;";
                        if (openFileDialog.ShowDialog() == true)
                        {
                            stampArgs.ImagePath = openFileDialog.FileName;
                            annotArgs = stampArgs;
                        }
                        break;

                    case "Stamp":
                        annotArgs = new StampAnnotArgs();
                        ((StampAnnotArgs)annotArgs).Type = StampType.TEXT_STAMP;
                        ((StampAnnotArgs)annotArgs).StampText = "Stamp Text";
                        ((StampAnnotArgs)annotArgs).StampTextDate = DateTime.Now.AddYears(1).ToString("yyyy-MM-dd HH:mm:ss");

                        int stampWidth = 0;
                        int stampHeight = 0;
                        int width = 252;
                        int height = 96;

                        ((StampAnnotArgs)annotArgs).ImageArray = GetCurrentViewer().currentViewer.GetTextStampImage("Stamp Text", ((StampAnnotArgs)annotArgs).StampTextDate,
                            C_TEXTSTAMP_SHAPE.TEXTSTAMP_RECT, C_TEXTSTAMP_COLOR.TEXTSTAMP_RED, out stampWidth, out stampHeight, out width, out height);

                       ((StampAnnotArgs)annotArgs).TextColor = TextStampColor.TEXTSTAMP_RED;
                        ((StampAnnotArgs)annotArgs).TextSharp = TextStampSharp.TEXTSTAMP_RECT;
                        ((StampAnnotArgs)annotArgs).ImageWidth = width;
                        ((StampAnnotArgs)annotArgs).ImageHeight = height;
                        ((StampAnnotArgs)annotArgs).MaxWidth = (int)Helpers.GetDpiUnrelatedNum(stampWidth / 72D * Helpers.Dpi);
                        ((StampAnnotArgs)annotArgs).MaxHeight = (int)Helpers.GetDpiUnrelatedNum(height / 72D * Helpers.Dpi);
                        annotAttribsList[AnnotAttrib.Transparency]=1;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Sign":
                        annotArgs = new FreehandAnnotArgs();
                        ((FreehandAnnotArgs)annotArgs).InkColor = GetCurrentViewer().AnnotSetControl.GetLineColor();
                        ((FreehandAnnotArgs)annotArgs).LineWidth = GetCurrentViewer().AnnotSetControl.GetLineWidth();
                        ((FreehandAnnotArgs)annotArgs).Transparency = GetCurrentViewer().AnnotSetControl.GetTransparency();
                        ((FreehandAnnotArgs)annotArgs).IsSaveAsStamp = true;
                        annotAttribsList[AnnotAttrib.Color]= ((FreehandAnnotArgs)annotArgs).InkColor;
                        annotAttribsList[AnnotAttrib.Thickness] = ((FreehandAnnotArgs)annotArgs).LineWidth;
                        annotAttribsList[AnnotAttrib.Transparency] = ((FreehandAnnotArgs)annotArgs).Transparency;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "Link":
                        annotArgs = new LinkAnnotArgs();
                        ((LinkAnnotArgs)annotArgs).LinkType = LINK_TYPE.GOTO;
                        ((LinkAnnotArgs)annotArgs).DestIndex = 0;
                        ((LinkAnnotArgs)annotArgs).URI = "";

                        annotAttribsList[AnnotAttrib.LinkType] = ((LinkAnnotArgs)annotArgs).LinkType;
                        annotAttribsList[AnnotAttrib.LinkDestIndx] = ((LinkAnnotArgs)annotArgs).DestIndex;
                        annotAttribsList[AnnotAttrib.LinkUri] = ((LinkAnnotArgs)annotArgs).URI;
                        annotAttribsList[AnnotAttrib.Locked] = false;
                        break;

                    case "SelectTool":
                        annotArgs = new SelectAnnotToolArgs();
                        break;
                    case "SnapTool":
                        annotArgs = new SnapshotToolArgs();
                        break;
                    case "SnapEditTool":
                        annotArgs = new SnapshotEditToolArgs();
                        (annotArgs as SnapshotEditToolArgs).ControlPointColor = Colors.White;
                        SnapToolMenu snapMenu = new SnapToolMenu();
                        (annotArgs as SnapshotEditToolArgs).ToolPanel = snapMenu;
                        snapMenu.ToolArgs = (annotArgs as SnapshotEditToolArgs);
                        snapMenu.PDFViewer = view;
                        break;
                    case "Audio":
                        {
                            SoundAnnotArgs soundArgs = new SoundAnnotArgs();
                            OpenFileDialog openAudioDialog = new OpenFileDialog();
                            openAudioDialog.Filter = "Wave Files(*.wav;*.wave;)|*.wav;*.wave|All Files(*.*;)|*.*;";
                            if (openAudioDialog.ShowDialog() == true)
                            {
                                soundArgs.SoundFilePath = openAudioDialog.FileName;
                                annotArgs = soundArgs;
                            }
                        }
                        break;
                    case "Redaction":
                        {
                            RedactionAnnotArgs redactionArgs =new RedactionAnnotArgs();
                            redactionArgs.LineColor = Colors.Red;
                            redactionArgs.BgColor = Colors.Black;
                            redactionArgs.FontColor = Colors.Red;
                            redactionArgs.Align = TextAlignment.Right;
                            redactionArgs.FontSize = 14;
                            redactionArgs.Content = "hello world";

                            annotAttribsList[AnnotAttrib.Color] = redactionArgs.LineColor;
                            annotAttribsList[AnnotAttrib.FontColor] = redactionArgs.LineColor;
                            annotAttribsList[AnnotAttrib.FillColor] = redactionArgs.BgColor;
                            annotAttribsList[AnnotAttrib.TextAlign] = redactionArgs.Align;
                            annotAttribsList[AnnotAttrib.FontSize] = redactionArgs.FontSize;
                            annotAttribsList[AnnotAttrib.Locked] = false;
                            annotAttribsList[AnnotAttrib.NoteText] = redactionArgs.Content;
                           
                            annotArgs = redactionArgs;
                        }
                        break;
                    default:
                        break;
                }
               
                TextEditTool.IsChecked = false;
                TextSelectTool.IsChecked = false;
                FormEditTool.IsChecked = false;
                PanTool.IsChecked = false;
               
                if (clickBtn.IsChecked==true)
                {
                    if (annotArgs != null)
                    {
                        view.SetMouseMode(MouseModes.AnnotCreate);
                        view.SetToolParam(annotArgs);
                    }

                    SelectTool.IsChecked = false;
                    SnapTool.IsChecked = false;
                    ClearToggleButtonState(AnnotTools);
                    ClearToggleButtonState(FormTools);
                    if (clickBtn.Tag!=null && clickBtn.Tag.ToString() == "Stamp")
                    {
                        clickBtn.IsChecked = false;
                    }
                    else
                    {
                        clickBtn.IsChecked = true;
                    }

                    if (view.AnnotSetControl != null)
                    {
                        view.AnnotSetControl.lastAnnotEditEvent = null;
                    }

                    annotArgs.Author = "ComPDFKit";
                    annotAttribsList[AnnotAttrib.Author] = annotArgs.Author;
                    view.CurrentView_AnnotActiveHandler(this, AnnotAttribEvent.GetAnnotAttribEvent(annotArgs, annotAttribsList));
                }
                else
                {
                    view.SetMouseMode(MouseModes.PanTool);
                    PanTool.IsChecked = true;
                    if (view.AnnotSetControl != null)
                    {
                        view.AnnotSetControl.lastAnnotEditEvent = null;
                    }
                    view.CurrentView_AnnotActiveHandler(this, new AnnotAttribEvent());
                }
            }
        }

        private void Undo_Click(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.CurrentUndoManager.Undo();
            }
        }

        private void Redo_Click(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.CurrentUndoManager.Redo();
            }
        }

        private void ClearToggleButtonState(DependencyObject parentControl)
        {
            int childCount = VisualTreeHelper.GetChildrenCount(parentControl);
            for (int i = 0; i < childCount; i++)
            {
                var childElement = VisualTreeHelper.GetChild(parentControl, i);
                if (childElement is ToggleButton)
                {
                    if((childElement as ToggleButton).Name== "FormHighlightBtn")
                    {
                        continue;
                    }
                    (childElement as ToggleButton).IsChecked = false;
                }
            }

            if(parentControl == AnnotTools)
            {
                RedactionBtn.IsChecked = false;
            }
        }

        private void ShowLink_Click(object sender, RoutedEventArgs e)
        {
            var button = sender as ToggleButton;
            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.currentViewer.SetShowLink(button.IsChecked.Value);
            }
        }
        private void PageOffset_ClickEvent(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            view.currentViewer.SetPageSpacing((uint)(PageOffset.IsChecked==true? 8:0));
        }

        private void FormTools_Click(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            ToggleButton clickBtn = sender as ToggleButton;
           
            ClearToggleButtonState(AnnotTools);
            view.AnnotSetControl.ProcessAnnotEvents(new AnnotAttribEvent());

            foreach (ToggleButton child in FormTools.Children)
            {
                if(child.Name== "FormHighlightBtn")
                {
                    continue;
                }
                if(clickBtn != child)
                {
                    child.IsChecked = false;
                }
            }
            ClearMouseToolState();

            if (view != null && clickBtn!=null)
            {
                if (clickBtn.IsChecked == true)
                {
                    AnnotHandlerEventArgs annotArgs = null;
                    switch(clickBtn.Tag.ToString())
                    {
                        case "TextBox":
                            {
                                WidgetTextBoxArgs textArgs=new WidgetTextBoxArgs();
                                textArgs.BgColor = Colors.LightGray;
                                annotArgs = textArgs;
                            }
                            break;
                        case "RadioBtn":
                            {
                                WidgetRadioButtonArgs radioArgs = new WidgetRadioButtonArgs();
                                radioArgs.CheckStyle = C_CHECK_STYLE.CK_CIRCLE;
                                radioArgs.BorderStyle = C_BORDER_STYLE.BS_SOLID;
                                radioArgs.LineColor = Colors.Black;
                                radioArgs.BgColor = Colors.LightGreen;
                                radioArgs.LineWidth = 2;
                                radioArgs.FieldName = GetRadioFieldName();
                                annotArgs = radioArgs;
                            }
                            break;
                        case "CheckBox":
                            {
                                WidgetCheckBoxArgs checkBoxArgs = new WidgetCheckBoxArgs();
                                checkBoxArgs.CheckStyle = C_CHECK_STYLE.CK_CHECK;
                                checkBoxArgs.BorderStyle = C_BORDER_STYLE.BS_SOLID;
                                checkBoxArgs.LineColor = Colors.Black;
                                checkBoxArgs.BgColor = Colors.LightGreen;
                                checkBoxArgs.LineWidth = 1;
                                annotArgs = checkBoxArgs;
                            }
                            break;
                        case "DropDown":
                            {
                                WidgetComboBoxArgs dropDownArgs=new WidgetComboBoxArgs();
                                dropDownArgs.BgColor = Colors.Green;
                                dropDownArgs.LineColor = Colors.Red;
                                dropDownArgs.LineWidth = 1;
                                annotArgs = dropDownArgs;
                            }
                            break;
                        case "List":
                            {
                                WidgetListBoxArgs listArgs=new WidgetListBoxArgs();
                                listArgs.LineColor = Colors.Red;
                                listArgs.LineWidth = 1;
                                annotArgs = listArgs;
                            }
                            break;
                        case "PushBtn":
                            {
                                WidgetPushButtonArgs pushButtonArgs=new WidgetPushButtonArgs();
                                pushButtonArgs.Text = "Push Button";
                                pushButtonArgs.BgColor = Colors.LightGray;
                                annotArgs = pushButtonArgs;
                            }
                            break;
                        case "Sign":
                            {
                                WidgetSignArgs signArgs=new WidgetSignArgs();
                                signArgs.BgColor= Colors.LightBlue;
                                signArgs.LineWidth= 1;
                                signArgs.LineColor= Colors.Red;
                                annotArgs = signArgs;
                            }
                            break;
                        default:
                            break;
                    }

                    if (annotArgs != null)
                    {
                        view.SetMouseMode(MouseModes.FormEditTool);
                        view.SetToolParam(annotArgs);
                    }
                }
                else
                {
                    view.SetMouseMode(MouseModes.PanTool);
                    PanTool.IsChecked = true;
                    if (view.AnnotSetControl != null)
                    {
                        view.AnnotSetControl.lastAnnotEditEvent = null;
                    }
                    view?.CurrentView_AnnotActiveHandler(this, new AnnotAttribEvent());
                }
            }
        }

        private void FormHighlightBtn_Click(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            if(view != null)
            {
                view.currentViewer.SetFormFieldHighlight(FormHighlightBtn.IsChecked==true?true:false);
            }
        }

        private void CropButton_Click(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            ToggleButton sourceBtn = sender as ToggleButton;
            if (sourceBtn != null)
            {
                sourceBtn.IsChecked = false;
            }
            if (view != null && view.currentViewer != null)
            {

                CropWindow cropWindow = new CropWindow();
                cropWindow.Owner = this;
                cropWindow.CurrentViewer = view.currentViewer;
                cropWindow.SetDoc(view.currentViewer.Document);
                cropWindow.Show();
            }
        }
        private void AutoCrop_Click(object sender, RoutedEventArgs e)
        {
            PDFViewerControl view = GetCurrentViewer();
            ToggleButton sourceBtn = sender as ToggleButton;
            if (sourceBtn != null)
            {
                view.LoadingAnimation.Visibility = Visibility.Visible;
                bool autoCrop = sourceBtn.IsChecked == true;
                Task.Factory.StartNew(() =>
                {
                    view.currentViewer?.SetCropMode(autoCrop);
                    Dispatcher.Invoke(() => {
                        view.LoadingAnimation.Visibility = Visibility.Collapsed;
                    });
                });
            }
        }

        private void OtherTools_Click(object sender, RoutedEventArgs e)
        {
            ClearMouseToolState();
            ClearToggleButtonState(AnnotTools);
            ClearToggleButtonState(FormTools);
            OtherTools.IsChecked = true;
            PDFViewerControl view = GetCurrentViewer();
            if (view != null)
            {
                view.SetMouseMode(MouseModes.PanTool);
                HideToolsPanel();
                OtherToolsPanel.Visibility = Visibility.Visible;
            }
        }

        private string GetRadioFieldName()
        {
            PDFViewerControl view = GetCurrentViewer();
            if (view != null && view.currentViewer!=null && view.currentViewer.Document!=null)
            {
                CPDFDocument cPDFDocument = view.currentViewer.Document;
                int radioIndex = 0;
               
                for (int i = 0; i < cPDFDocument.PageCount; i++)
                {
                    CPDFPage cPage = cPDFDocument.PageAtIndex(i, false);
                    List<CPDFAnnotation> annotList = cPage.GetAnnotations();
                    if (annotList != null && annotList.Count > 0)
                    {
                        List<CPDFWidget> formList = annotList.AsEnumerable().
                                                Where(x => x.Type == C_ANNOTATION_TYPE.C_ANNOTATION_WIDGET)
                                                .Cast<CPDFWidget>()
                                                .ToList();
                        radioIndex += formList.Where(x => x.WidgeType == C_WIDGET_TYPE.WIDGET_RADIOBUTTON).Count();
                    }
                }

                return "RadioGroup" + radioIndex.ToString();
            }
            return string.Empty;
        }

        private void Encryption_Click(object sender, RoutedEventArgs e)
        {
            EncryptionPopup.IsOpen = true;
        }

        private void SetPassword_Click(object sender, RoutedEventArgs e)
        {
            EncryptionPopup.IsOpen = false;
            PDFViewerControl view = GetCurrentViewer();
            if (view != null && view.currentViewer != null && view.currentViewer.Document != null)
            {
                EncryptionWindow windoow = new EncryptionWindow(view.currentViewer.Document);
                windoow.Owner = this;
                windoow.Show();
            }
            
        }

        private void RemovePassword_Click(object sender, RoutedEventArgs e)
        {
            CPDFDocument document = null;
            PDFViewerControl view = GetCurrentViewer();
            if (view != null && view.currentViewer != null && view.currentViewer.Document != null)
                document = view.currentViewer.Document;               
            string SavePath;
            //创建一个保存文件的对话框
            SaveFileDialog dialog = new SaveFileDialog()
            {
                Filter = "PDF Files| *.pdf",
                InitialDirectory = @"C:\",
                FileName = document.FileName + "_Decrypted"
            };
            //调用ShowDialog()方法显示该对话框，该方法的返回值代表用户是否点击了确定按钮
            if (dialog.ShowDialog().GetValueOrDefault())
            {
                SavePath = dialog.FileName;
            }
            else
            {
                return;
            }
            if (!document.Descrypt(SavePath))
                MessageBox.Show("Save file error!");
        }
    }
}