PDFOffice_Windows_exe/PDF Office/ViewModels/Dialog/ToolsDialogs/SaftyDialogs/SetPasswordDialogViewModel.cs

using ComPDFKit.PDFDocument;
using PDF_Office.Model;
using PDF_Office.Model.Dialog.ToolsDialogs.SaftyDialogs;
using PDF_Office.Views.HomePanel.RecentFiles;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Windows.Controls;
using System.Windows.Forms;
using Forms = System.Windows.Forms;

namespace PDF_Office.ViewModels.Dialog.ToolsDialogs.SaftyDialogs
{
    public class SetPasswordDialogViewModel : BindableBase, IDialogAware
    {
        

        private CPDFDocument document;

        public DelegateCommand ConfirmPasswordCommand { get; set; }

        public DelegateCommand InputPasswordCommand { get; set; }

        private PasswordModel passwordModel = new PasswordModel();

        private string _permissionPassword;
        public string PermissionPassword
        {
            get { return _permissionPassword; }
            set
            {
                _permissionPassword = value;
                RaisePropertyChanged("UserPassword");
            }
        }

        private string _allowsCopying;
        public string AllowsCopying
        {
            get { return _allowsCopying; }
            set 
            {
                _allowsCopying = value; 
                RaisePropertyChanged("UserPassword");
            }
        }

        private string _allowsPrinting;
        public string AllowsPrinting
        {
            get { return _allowsPrinting; }
            set
            {
                _allowsPrinting = value;
                RaisePropertyChanged("PermissionPassword");
            }
        }

        public SetPasswordDialogViewModel()
        {
            ConfirmPasswordCommand = new DelegateCommand(ConfirmPassword);
            InputPasswordCommand = new DelegateCommand(InputPassword);
        }



        public void ConfirmPassword()
        {

            FolderBrowserDialog folderDialog = new FolderBrowserDialog();
            Forms.SaveFileDialog sfd = new Forms.SaveFileDialog();
            /*
             *设置这个对话框的起始保存路径
             */
            sfd.InitialDirectory = @"D:\";
            /*
             *设置保存的文件的类型，注意过滤器的语法 例子：“文件类型|*.后缀名；*.后缀名；”
             */
            sfd.Filter = "PDF|*.pdf;";
            /*
             *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
             **/
            sfd.FileName = document.FileName + "_SetPassword.pdf";
            if (sfd.ShowDialog() == Forms.DialogResult.OK)
            {
                
                /*
                 * 做一些工作
                 */
                if (AllowsCopying == "True")
                {
                    Trace.WriteLine("111111111"+"True");
                    passwordModel.PermissionsInfo.AllowsCopying = true;
                }
                else {
                    passwordModel.PermissionsInfo.AllowsCopying = false;
                }
                if (AllowsPrinting == "True")
                {
                    passwordModel.PermissionsInfo.AllowsPrinting = true;
                }
                else {
                    Trace.WriteLine("2222222"+"false");
                    passwordModel.PermissionsInfo.AllowsPrinting = false; 
                }
                passwordModel.PermissionPassword=PermissionPassword;
                document.Encrypt(PasswordModel.UserPassword, passwordModel.PermissionPassword, passwordModel.PermissionsInfo);
                document.WriteToFilePath(sfd.FileName);
                Trace.WriteLine(PasswordModel.UserPassword + "nouser"+ passwordModel.PermissionPassword + "copy"+passwordModel.PermissionsInfo.AllowsCopying+ "print"+ passwordModel.PermissionsInfo.AllowsPrinting);

                MessageBox.Show(sfd.FileName + " Saved Successfully.");
            }
            else
            {
                MessageBox.Show("Cancel.");
            }


        }

        public void InputPassword()
        {
            //UserPassword = PasswordModel.UserPassword;
            Trace.WriteLine("0_0");
        }

        public string Title => "";

        public event Action<IDialogResult> RequestClose;

        public bool CanCloseDialog()
        {
            return true;
        }

        public void OnDialogClosed()
        {
        }

        public void OnDialogOpened(IDialogParameters parameters)
        {
            CPDFDocument doc = null;
            parameters.TryGetValue<CPDFDocument>(ParameterNames.PDFDocument, out doc);
            if (doc != null)
            {
                document = doc;
            }
        }
    }
}