PDFOffice_Windows_exe/PDF Office/ViewModels/EditTools/Background/BackgroundTemplateListBaseContentViewModel.cs

using ComPDFKitViewer.PdfViewer;
using Dropbox.Api.FileProperties;
using PDF_Master.EventAggregators;
using PDF_Master.Model;
using Prism.Commands;
using Prism.Events;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Drawing.Printing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;

namespace PDF_Master.ViewModels.EditTools.Background
{
    public class BackgroundTemplateListBaseContentViewModel : BindableBase, INavigationAware
    {
        public IRegionManager backgroundTemplateListRegion;
        private readonly IEventAggregator eventAggregator;

        private string BackgroundTemplateListColorContentName = "BackgroundTemplateListColorContent";
        private string BackgroundTemplateListFileContentName = "BackgroundTemplateListFileContent";

        public EnumColorOrFile CurrentCreateMod;


        private string _currentTemplateListModName;
        public string CurrentTemplateListModName
        {
            get { return _currentTemplateListModName; }
            set { _currentTemplateListModName = value; }
        }

        private string backgroundTemplateListRegionName;

        public string BackgroundTemplateListRegionName
        {
            get => backgroundTemplateListRegionName;
            set => SetProperty(ref backgroundTemplateListRegionName, value);
        }


        private System.Windows.Visibility backgroundTemplateListVisible;
        public System.Windows.Visibility BackgroundTemplateListVisible
        {
            get => backgroundTemplateListVisible;
            set => SetProperty(ref backgroundTemplateListVisible, value);
        }

        private bool isFirstEnter = true;
        public bool IsFirstEnter
        {
            get => isFirstEnter;
            set => isFirstEnter = value;
        }

        public DelegateCommand<object> ChangeTemplateListModCommand { get; set; }
        public DelegateCommand EnterCreateCommand { get; set; }

        public string unicode = null;
        public string Unicode = null;

        public BackgroundTemplateListBaseContentViewModel(IRegionManager backgroundTemplateListRegion, IEventAggregator eventAggregator)
        {
            this.backgroundTemplateListRegion = backgroundTemplateListRegion;
            this.eventAggregator = eventAggregator;
            Unicode = App.mainWindowViewModel.SelectedItem.Unicode;
            BackgroundTemplateListRegionName = Guid.NewGuid().ToString();
            ChangeTemplateListModCommand = new DelegateCommand<object>(ChangeTemplateListMod);
            EnterCreateCommand = new DelegateCommand(EnterCreate);
        }

        public void EnterCreate()
        {
            this.eventAggregator.GetEvent<EnterTemplateListOrCreateEvent>().Publish(new EnumTemplateListOrCreateUnicode {Unicode=Unicode,Status= EnumTemplateListOrCreate.StatusCreate });
        }

        public void EnterSelectedTemplateListMod(string currentTemplateListName)
        {
            NavigationParameters param = new NavigationParameters();
            param.Add("UniCode", unicode);
            backgroundTemplateListRegion.RequestNavigate(BackgroundTemplateListRegionName, currentTemplateListName);
            backgroundTemplateListVisible = System.Windows.Visibility.Visible;
        }

        public void ChangeTemplateListMod(object e)
        {
            var args = e as Button;
            if (args != null)
            {
                CurrentTemplateListModName = args.Name;
                EnterSelectedTemplateListMod(CurrentTemplateListModName);
                eventAggregator.GetEvent<SetCurrentTemplateListModEvent>().Publish(new stringUnicode {
                    Unicode = Unicode,Status = CurrentTemplateListModName});
            }
        }

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

        public void OnNavigatedFrom(NavigationContext navigationContext)
        {
        }

        public void OnNavigatedTo(NavigationContext navigationContext)
        {

            navigationContext.Parameters.TryGetValue<string>("UniCode", out unicode);
            if (IsFirstEnter)
            {
                CurrentTemplateListModName = BackgroundTemplateListColorContentName;
                EnterSelectedTemplateListMod(CurrentTemplateListModName);
                IsFirstEnter = false;
            }
            else
            {
                navigationContext.Parameters.TryGetValue<EnumColorOrFile>("CurrentCreateModName", out CurrentCreateMod);
                if (CurrentCreateMod == EnumColorOrFile.StatusColor)
                {
                    CurrentTemplateListModName = "BackgroundTemplateListColorContent";
                }
                else
                {
                    CurrentTemplateListModName = "BackgroundTemplateListFileContent";
                }
                EnterSelectedTemplateListMod(CurrentTemplateListModName);
                eventAggregator.GetEvent<SetCurrentTemplateListModEvent>().Publish(new stringUnicode
                {
                    Unicode = Unicode,
                    Status = CurrentTemplateListModName
                });

            }
        }
    }
}