Display_D_HP/TeamAAS-VM/ViewModels/DebugMod/VisionSolutionViewModel.cs

using Prism.Commands;
using Prism.Ioc;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Media;
using Team.FFFeederService;
using Team.FFFeederService.Interfaces;
using TeamAAS_VP.Controls;
using TeamAAS_VP.Core;
using TeamAAS_VP.Interfaces;

namespace TeamAAS_VP.ViewModels.DebugMod
{
    public class VisionSolutionViewModel : BindableBase, IConfirmNavigationRequest
    {
        IContainerProvider _container;
        ISystemDatabaseService _systemDatabaseService;

        private ImageSource _CurrentImage;
        public ImageSource CurrentImage
        {
            get { return _CurrentImage; }
            set { SetProperty(ref _CurrentImage, value); }
        }

        private FocusAnalyzerViewModel _FocusAnalyzerViewModel;
        public FocusAnalyzerViewModel FocusAnalyzerViewModel
        {
            get { return _FocusAnalyzerViewModel; }
            set { SetProperty(ref _FocusAnalyzerViewModel, value); }
        }

        //选择图片
        private DelegateCommand _SelectImageCommand;
        public DelegateCommand SelectImageCommand =>
            _SelectImageCommand ?? (_SelectImageCommand = new DelegateCommand(ExecuteSelectImageCommand));

        

        private DelegateCommand _LoadedCommand;
        public DelegateCommand LoadedCommand =>
            _LoadedCommand ?? (_LoadedCommand = new DelegateCommand(ExecuteLoadedCommand));

        public VisionSolutionViewModel(IContainerProvider container, ISystemDatabaseService systemDatabaseService)
        {
            _container = container;
            _systemDatabaseService = systemDatabaseService;
        }

        void ExecuteLoadedCommand()
        {
            try
            {
                if (_systemDatabaseService.GetCurrentUser().userPart == Enums.UserPart.Operator)
                {
                    IsAllowEdit = false;
                }
                else
                {
                    IsAllowEdit = true;
                }
            }
            catch (Exception)
            {

            }

        }

        /// <summary>
        /// 选择一张图像
        /// </summary>
        void ExecuteSelectImageCommand()
        {
            //打开文件对话框，选择一张图片
            Microsoft.Win32.OpenFileDialog openFileDialog = new Microsoft.Win32.OpenFileDialog();
            openFileDialog.Filter = "Image files (*.png;*.jpg;*.jpeg;*.bmp)|*.png;*.jpg;*.jpeg;*.bmp|All files (*.*)|*.*";
            openFileDialog.Multiselect = true;
            bool? result = openFileDialog.ShowDialog();
            if (result.HasValue)
            {
                if (openFileDialog.FileNames.Length > 0)
                {
                    //加载第一张图片
                    string filePath = openFileDialog.FileNames[0];
                    try
                    {
                        System.Windows.Media.Imaging.BitmapImage bitmap = new System.Windows.Media.Imaging.BitmapImage();
                        bitmap.BeginInit();
                        bitmap.UriSource = new Uri(filePath, UriKind.Absolute);
                        bitmap.CacheOption = System.Windows.Media.Imaging.BitmapCacheOption.OnLoad;
                        bitmap.EndInit();
                        FocusAnalyzerViewModel.CurrentImage = bitmap;
                    }
                    catch (Exception ex)
                    {
                        //显示错误信息
                        System.Windows.MessageBox.Show("加载图片失败：" + ex.Message);
                    }
                }
            }
        }

        #region 继承
        /// <summary>
        /// 确认导航请求时调用。此方法允许您在导航之前执行一些操作。
        /// </summary>
        /// <param name="navigationContext"></param>
        /// <param name="continuationCallback"></param>
        public void ConfirmNavigationRequest(NavigationContext navigationContext, Action<bool> continuationCallback)
        {
            continuationCallback(true);
        }

        /// <summary>
        /// 接收导航请求时调用。传入导航参数，包含有关导航目标的信息。
        /// </summary>
        /// <param name="navigationContext"></param>
        /// <exception cref="NotImplementedException"></exception>
        public async void OnNavigatedTo(NavigationContext navigationContext)
        {
            if (FocusAnalyzerViewModel==null)
            {
                FocusAnalyzerViewModel = new FocusAnalyzerViewModel();
            }
        }

        /// <summary>
        /// 是否允许导航到此视图模型。
        /// </summary>
        /// <param name="navigationContext"></param>
        /// <returns></returns>
        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        /// <summary>
        /// 导航离开此视图模型时调用。您可以在此处执行清理操作或保存状态。
        /// </summary>
        /// <param name="navigationContext"></param>
        public void OnNavigatedFrom(NavigationContext navigationContext)
        {

        }
        #endregion

        private bool _IsAllowEdit = false;

        public bool IsAllowEdit
        {
            get { return _IsAllowEdit; }
            set { SetProperty(ref _IsAllowEdit, value); }
        }

        private void LoginChange(Models.User user)
        {
            if (user.userPart == Enums.UserPart.Operator)
            {
                IsAllowEdit = false;
            }
            else
            {
                IsAllowEdit = true;
            }
        }
    }
}