PDFOffice_Windows_exe/PDF Office/ViewModels/Tools/ToolsBarContentViewModel.cs

using ComPDFKit.PDFDocument;
using ComPDFKitViewer.PdfViewer;
using Microsoft.Office.Interop.Word;
using PDF_Office.CustomControl;
using PDF_Office.EventAggregators;
using PDF_Office.Helper;
using PDF_Office.Model;
using PDF_Office.Model.Dialog.ToolsDialogs.SaftyDialogs;
using Prism.Commands;
using Prism.Events;
using Prism.Mvvm;
using Prism.Regions;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Security.Cryptography.X509Certificates;
using System.Windows;
using System.Threading.Tasks;
using static PDF_Office.Model.Dialog.ToolsDialogs.SaftyDialogs.DeleteSafetySettintgsModel;
using Task = System.Threading.Tasks.Task;
using PDF_Office.Model.Dialog.ToolsDialogs;
using ComPDFKitViewer;

namespace PDF_Office.ViewModels.Tools
{
    public class ToolsBarContentViewModel : BindableBase, INavigationAware
    {
        private CPDFViewer PDFViewer;

        private ViewContentViewModel viewContentViewModel;

        public IDialogService dialogs;
        public CropPageUndoManager UndoManager = new CropPageUndoManager();
        public IEventAggregator eventAggregator;
        List<int> cropCurrentPageList = new List<int>();


        private CPDFDocument.GetPageIndexDelegate indexDelegate = null;


        public string unicode = null;

        /// <summary>
        /// 是否是第一次加载
        /// </summary>
        private bool isFirstLoad = true;

        private string _pageIndex = "0";

        ///// <value>
        ///// 当前页
        ///// </value>
        //public string PageIndex
        //{
        //    get { return _pageIndex; }
        //    set
        //    {
        //        SetProperty(ref _pageIndex, value);
        //        App.mainWindowViewModel.Value = int.Parse(PageIndex);
        //    }
        //}
        //private CPDFDocument tempDocument;
        //private IntPtr compressingIntpr = IntPtr.Zero;
        //private string _pageNumber = "";
        ///// <value>
        ///// 总页数
        ///// </value>
        //public string PageNumber
        //{
        //    get { return _pageNumber; }
        //    set
        //    {
        //        SetProperty(ref _pageNumber, value);
        //        App.mainWindowViewModel.MaxValue = int.Parse(PageNumber);
        //    }
        //}
        public DelegateCommand CompressCommand { get; set; }
        public DelegateCommand MergeCommand { get; set; }
        public DelegateCommand SetPasswordCommand { get; set; }
        public DelegateCommand CancelPasswordCommand { get; set; }
        public DelegateCommand<object> SetEditToolsCommand { get; set; }
        public DelegateCommand SetWatermarkCommand { get; set; }
        public DelegateCommand CropCurrentPageWMCommand { get; set; }
        public DelegateCommand CropAllPagesWMCommand { get; set; }
        public ToolsBarContentViewModel(IDialogService dialogService, IEventAggregator eventAggregator)
        {
            dialogs = dialogService;
            this.eventAggregator = eventAggregator;
            unicode = App.mainWindowViewModel.SelectedItem.Unicode;
            CompressCommand = new DelegateCommand(OpenCompressDialog);
            MergeCommand = new DelegateCommand(MergeDialog);
            SetPasswordCommand = new DelegateCommand(OpenSetPasswordDialog);
            CancelPasswordCommand = new DelegateCommand(OpenCancelPasswordDialog);
            SetEditToolsCommand = new DelegateCommand<object>(SetEditTools);
            CropCurrentPageWMCommand = new DelegateCommand(CropCurrentPageWM);
            CropAllPagesWMCommand = new DelegateCommand(CropAllPagesWM);
        }

        private void SetEditTools(object e)
        {
            var args = e as System.Windows.Controls.Button;
            if (args != null)
            {
                this.eventAggregator.GetEvent<EnterSelectedEditToolEvent>().Publish(new StringWithUnicode() { Unicode = unicode, EditToolsContentName = args.Name });
            }
        }


        private void OpenCompressDialog()
        {
            DialogParameters value = new DialogParameters();
            value.Add(ParameterNames.PDFViewer, PDFViewer);
            dialogs.ShowDialog(DialogNames.CompressDialog, value, e =>
            {
                CompressDialogModel compressDialogModel = new CompressDialogModel();
                compressDialogModel.OnOpened((Prism.Services.Dialogs.DialogResult)e);
                // OnOpened((Prism.Services.Dialogs.DialogResult)e);
            });
        }

        //private int GetIndex(int pageindex)
        //{
        //    PageIndex = (pageindex + 1).ToString();
        //    App.mainWindowViewModel.IsProcessVisible = System.Windows.Visibility.Visible;
        //    if (PageIndex == PageNumber) { App.mainWindowViewModel.IsProcessVisible = System.Windows.Visibility.Collapsed; }
        //    return 0;
        //}
        //private void CompressClear()
        //{
        //    tempDocument.CompressFile_Cancel(compressingIntpr);
        //    App.mainWindowViewModel.IsProcessVisible = System.Windows.Visibility.Collapsed;
        //}
        //public async void OnOpened(Prism.Services.Dialogs.DialogResult e)
        //{
        //    if (e.Result == Prism.Services.Dialogs.ButtonResult.Cancel) { return; }
        //    CPDFDocument doc = null;
        //    string filepath = "";
        //    string password = "";
        //    int compressquality = 45;
        //    doc = e.Parameters.GetValue<CPDFDocument>(ParameterNames.PDFDocument);
        //    filepath = e.Parameters.GetValue<string>(ParameterNames.FilePath);
        //    password = e.Parameters.GetValue<string>(ParameterNames.PassWord);
        //    compressquality = e.Parameters.GetValue<int>("compressDialogModel.CompressQuality");
        //    if (doc != null)
        //    {
        //        PageNumber = doc.PageCount.ToString();
        //        CPDFDocument document = CPDFDocument.InitWithFilePath(doc.FilePath);
        //        document.UnlockWithPassword(password);
        //        indexDelegate += GetIndex;
        //        compressingIntpr = document.CompressFile_Init(compressquality, indexDelegate);
        //        //GC.KeepAlive(indexDelegate);
        //        tempDocument = document;
        //        Trace.WriteLine("compressDialogModel.CompressQuality" + compressquality);
        //        App.mainWindowViewModel.ProcessCloseAction = CompressClear;
        //        await Task.Run<bool>(() => { return document.CompressFile_Start(compressingIntpr, filepath); });
        //        CommonHelper.ShowFileBrowser(filepath);
        //        document.Release();
        //    }
        //}
        private void MergeDialog()
        {
            DialogParameters value = new DialogParameters();
            value.Add(ParameterNames.PDFViewer, PDFViewer);
            dialogs.ShowDialog(DialogNames.MergeDialog, value, e => { });
        }

        private void OpenSetPasswordDialog()
        {
            if (!viewContentViewModel.SecurityInfo.IsPasswordChanged)
            {
                VerifyPasswordResult result = SecurityHelper.VerifyPasswordByPasswordKind(PDFViewer.Document, EnumPasswordKind.StatusPermissionsPassword, dialogs);
                if (result.IsDiscryptied)
                {

                    if (result.Password != null)
                    {
                        string filePath = PDFViewer.Document.FilePath;
                        PDFViewer.Document.Release();
                        PDFViewer.InitDocument(filePath);
                        PDFViewer.Load();
                        PDFViewer.Document.UnlockWithPassword(result.Password);
                    }


                    DialogParameters value = new DialogParameters();
                    value.Add(ParameterNames.PDFViewer, this.PDFViewer);
                    value.Add(ParameterNames.ViewContentViewModel, this.viewContentViewModel);
                    dialogs.ShowDialog(DialogNames.SetPasswordDialog, value, e =>
                    {
                        if (e.Result == ButtonResult.OK)
                        {
                            SecurityHelper.IsPasswordChanged = true;
                            if (viewContentViewModel.SecurityInfo.IsPasswordChanged)
                            {
                                viewContentViewModel.PDFViewer.UndoManager.CanSave = true;
                            }
                            this.eventAggregator.GetEvent<ShowTipEvent>().Publish(new ShowTipEventArgs() { enumTipKind = EnumTipKind.StatusSetPasswordSuccessfully, Unicode = unicode });
                        }
                    });
                }
            }
        }

        private void OpenCancelPasswordDialog()
        {
            if (!PDFViewer.Document.IsEncrypted)
            {
                MessageBoxEx.Show("No security settings available ");
            }
            else
            {
                VerifyPasswordResult result = SecurityHelper.VerifyPasswordByPasswordKind(PDFViewer.Document, EnumPasswordKind.StatusPermissionsPassword, dialogs);
                if (result.IsDiscryptied)
                {
                    if (result.Password != null)
                    {
                        string filePath = PDFViewer.Document.FilePath;
                        PDFViewer.Document.Release();
                        PDFViewer.InitDocument(filePath);
                        PDFViewer.Document.UnlockWithPassword(result.Password);
                    }
                    DialogParameters value = new DialogParameters();
                    value.Add(ParameterNames.PDFDocument, PDFViewer.Document);
                    dialogs.ShowDialog(DialogNames.DeleteSafetySettingsDialog, value, e => { });
                }
            }
        }

        private async void CropCurrentPageWM()
        {
            viewContentViewModel.IsLoading = Visibility.Visible;
            await WaitCropCurrentPageWM();
            viewContentViewModel.IsLoading = Visibility.Collapsed;
        }
        private async void CropAllPagesWM()
        {
            viewContentViewModel.IsLoading = Visibility.Visible;
            await WaitCropAllPagesWM();
            viewContentViewModel.IsLoading = Visibility.Collapsed;

            //PDFViewer.UndoManager.AddHistory();
        }

        private async Task WaitCropCurrentPageWM()
        {
            await Task.Run(() =>
            {
                if (PDFViewer.CurrentIndex > 0)
                {
                    UndoManager.cropPageList.Add(PDFViewer.CurrentIndex);
                }
                UndoManager.ADDCropCurrentPageWM();
                PDFViewer?.SetCropMode(true, UndoManager.cropPageList);
                PDFViewer.UndoManager.AddHistory(UndoManager);
                PDFViewer.UndoManager.CanSave = true;
            });

        }

        private async Task WaitCropAllPagesWM()
        {
            await Task.Run(() =>
            {
                List<int> cropPagesList = new List<int>();
                for (int i = 0; i < PDFViewer.Document.PageCount; i++)
                {
                    cropPagesList.Add(i);
                }

                UndoManager.cropPageList.AddRange(cropPagesList);
                UndoManager.ADDCropAllPagesWM();
                PDFViewer?.SetCropMode(true, UndoManager.cropPageList);
                PDFViewer.UndoManager.AddHistory(UndoManager);
                PDFViewer.UndoManager.CanSave = true;
            });
        }



        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        public void OnNavigatedFrom(NavigationContext navigationContext)
        {
        }

        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            navigationContext.Parameters.TryGetValue<ViewContentViewModel>(ParameterNames.ViewContentViewModel, out viewContentViewModel);
            navigationContext.Parameters.TryGetValue<CPDFViewer>(ParameterNames.PDFViewer, out PDFViewer);
            if (PDFViewer != null)
            {
                UndoManager.setPDFViewer(PDFViewer);
                //DFViewer.UndoManager.AddHistory(UndoManager);
                isFirstLoad = false;
            }
        }
    }
}