kmpdfkit_demo/ComPDFKit.Demo/BOTA/AnnotationsControl.xaml.cs

using System.Collections.Generic;
using System.Diagnostics;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using Microsoft.Win32;
using System.Windows.Controls.Primitives;
using ComPDFKitViewer.PdfViewer;
using ComPDFKitViewer.AnnotEvent;

namespace ComPDFKitDemo.BOTA
{
    public partial class AnnotationsControl : UserControl
    {
        public CPDFViewer pdfViewer;
        private bool selectChangeEnable = true;
        public AnnotationsControl()
        {
            InitializeComponent();
            ContextMenu popMenu = new ContextMenu();
            MenuItem copyItem = new MenuItem();
            copyItem.Header = "Copy";
            copyItem.Click += CopyItem_Click;
            popMenu.Items.Add(copyItem);
            MenuItem delItem = new MenuItem();
            delItem.Header = "Delete";
            delItem.Click += DelItem_Click;
            popMenu.Items.Add(delItem);
            this.ContextMenu = popMenu;
        }

        private void DelItem_Click(object sender, RoutedEventArgs e)
        {
            if (AnnotListBox.SelectedItem != null && pdfViewer != null)
            {
                AnnotCommentControl AnnotControl = (AnnotCommentControl)AnnotListBox.SelectedItem;
                AnnotHandlerEventArgs comment = AnnotControl.GetBindData();
                if (comment != null)
                {
                    pdfViewer.RemovePageAnnot(comment.PageIndex, comment.AnnotIndex);
                }
                AnnotListBox.Items.Remove(AnnotControl);
            }
        }

        private void CopyItem_Click(object sender, RoutedEventArgs e)
        {
            if (AnnotListBox.SelectedItem != null && pdfViewer != null)
            {
                if(!pdfViewer.ExecCopyCommand())
                {
                    Debug.WriteLine("Copy Faild");
                }
            }
        }

        private void ExportAnnots_Click(object sender, RoutedEventArgs e)
        {
            ToggleButton exportBtn = sender as ToggleButton;
            if (exportBtn != null)
            {
                exportBtn.IsEnabled = false;
                SaveFileDialog dlg = new SaveFileDialog();
                dlg.Filter = "PDF|*.xfdf";
                dlg.DefaultExt = ".xfdf";
                dlg.FileName = pdfViewer.Document.FileName;
                if (dlg.ShowDialog() == true)
                {
                    string fileName = dlg.FileName;
                }
                exportBtn.IsEnabled = true;
            }
        }

        private void ImportAnnots_Click(object sender, RoutedEventArgs e)
        {
            ToggleButton importBtn = sender as ToggleButton;
            if (importBtn != null)
            {
                importBtn.IsEnabled = false;
                OpenFileDialog dlg = new OpenFileDialog();
                dlg.Filter = "PDF|*.xfdf";
                dlg.DefaultExt = ".xfdf";
                dlg.FileName = pdfViewer.Document.FileName;
                if (dlg.ShowDialog() == true)
                {

                }
                importBtn.IsEnabled = true;
            }
        }

        public void LoadAnnots()
        {
            AnnotListBox.Items.Clear();
            if (pdfViewer != null && pdfViewer.Document != null)
            {
                int pageCount = pdfViewer.Document.PageCount;
                Task job = new Task(() =>
                {
                    for (int i = 0; i < pageCount; i++)
                    {
                        List<AnnotHandlerEventArgs> commentsList = pdfViewer.GetAnnotCommentList(i, pdfViewer.Document);
                        if (commentsList != null)
                        {
                            Dispatcher.Invoke(() =>
                            {
                                foreach (AnnotHandlerEventArgs comment in commentsList)
                                {
                                    AnnotCommentControl AnnotControl = new AnnotCommentControl();
                                    AnnotControl.BindData(comment);
                                    AnnotListBox.Items.Add(AnnotControl);
                                }
                            });
                        }
                    }
                });
                job.Start();
            }
        }

        private void AnnotListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if(selectChangeEnable)
            {
                if (AnnotListBox.SelectedItems.Count > 0 && pdfViewer != null)
                {
                    Dictionary<int, List<int>> selectAnnotsDict = new Dictionary<int, List<int>>();

                    foreach (AnnotCommentControl AnnotControl in AnnotListBox.SelectedItems)
                    {
                        AnnotHandlerEventArgs comment = AnnotControl.GetBindData();
                        if (comment != null)
                        {
                            if (selectAnnotsDict.ContainsKey(comment.PageIndex) == false)
                            {
                                selectAnnotsDict[comment.PageIndex] = new List<int>();
                            }
                            selectAnnotsDict[comment.PageIndex].Add(comment.AnnotIndex);
                        }
                    }
                    pdfViewer.SelectAnnotation(selectAnnotsDict);
                }
            }
           
            AnnotListBox.ScrollIntoView(AnnotListBox.SelectedItem);
        }

        public void SetSelectAnnot(Dictionary<int, List<int>> selectAnnotDicts)
        {
            int selectIndex = -1;
            selectChangeEnable = false;
            AnnotListBox.SelectedItems.Clear();
            foreach (AnnotCommentControl Item in AnnotListBox.Items)
            {
                AnnotHandlerEventArgs commentData = Item.GetBindData();
                selectIndex++;
                if(selectAnnotDicts.ContainsKey(commentData.PageIndex) && selectAnnotDicts[commentData.PageIndex].Contains(commentData.AnnotIndex))
                {
                    AnnotListBox.SelectedItems.Add(Item);
                }
            }
            selectChangeEnable = true;
        }
    }
}