138 lines
4.6 KiB
C#
138 lines
4.6 KiB
C#
using Model.Entity;
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using Prism.Commands;
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using Prism.Ioc;
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using Service.Interface;
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using System.Windows.Input;
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using UIShare.ViewModelBase;
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namespace MainModule.ViewModels
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{
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public class PostDetailViewModel : NavigateViewModelBase
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{
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#region 属性
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private PostEntity _selectedPost;
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public PostEntity SelectedPost
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{
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get => _selectedPost;
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set => SetProperty(ref _selectedPost, value);
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}
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#endregion
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#region 命令
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public ICommand LikePostCommand { get; set; }
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public ICommand FavoritePostCommand { get; set; }
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public ICommand SharePostCommand { get; set; }
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#endregion
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#region 私有字段
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private IContainerProvider _containerProvider;
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private IPostService _postService;
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private IDialogService _dialogService;
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#endregion
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public PostDetailViewModel(IContainerProvider containerProvider) : base(containerProvider)
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{
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_containerProvider = containerProvider;
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_postService = containerProvider.Resolve<IPostService>();
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_dialogService = containerProvider.Resolve<IDialogService>();
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InitializeCommands();
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}
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private void InitializeCommands()
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{
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LikePostCommand = new DelegateCommand(OnLikePost);
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FavoritePostCommand = new DelegateCommand(OnFavoritePost);
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SharePostCommand = new DelegateCommand(OnSharePost);
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}
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#region 命令处理
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private async void OnLikePost()
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{
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if (SelectedPost != null)
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{
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SelectedPost.LikeCount++;
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// 在实际应用中，这里应该调用服务更新数据库
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var result = await _postService.UpdatePostAsync(SelectedPost);
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if (!result.IsSuccess)
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{
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var dialogParams = new DialogParameters();
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dialogParams.Add("Title", "错误");
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dialogParams.Add("Message", "点赞失败" + result.Msg);
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dialogParams.Add("Icon", "error");
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dialogParams.Add("ShowOk", true);
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_dialogService.ShowDialog("MessageBox", dialogParams);
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}
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}
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}
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private async void OnFavoritePost()
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{
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if (SelectedPost != null)
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{
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var dialogParams = new DialogParameters();
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dialogParams.Add("Title", "提示");
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dialogParams.Add("Message", "帖子已收藏");
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dialogParams.Add("Icon", "info");
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dialogParams.Add("ShowOk", true);
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_dialogService.ShowDialog("MessageBox", dialogParams, result =>
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{
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if (result.Result == ButtonResult.OK)
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{
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// 用户点击了确定
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}
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});
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}
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}
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private async void OnSharePost()
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{
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if (SelectedPost != null)
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{
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var dialogParams = new DialogParameters();
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dialogParams.Add("Title", "提示");
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dialogParams.Add("Message", "分享功能待实现");
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dialogParams.Add("Icon", "info");
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dialogParams.Add("ShowOk", true);
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_dialogService.ShowDialog("MessageBox", dialogParams, result =>
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{
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if (result.Result == ButtonResult.OK)
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{
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// 用户点击了确定
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}
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});
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}
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}
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#endregion
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#region 业务方法
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public async void LoadPostDetails(PostEntity post)
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{
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if (post != null)
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{
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SelectedPost = post;
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// 增加浏览量
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SelectedPost.ViewCount++;
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// 在实际应用中，这里应该调用服务更新数据库
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var result = await _postService.UpdatePostAsync(SelectedPost);
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if (!result.IsSuccess)
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{
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var dialogParams = new DialogParameters();
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dialogParams.Add("Title", "错误");
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dialogParams.Add("Message", "加载帖子详情失败" + result.Msg);
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dialogParams.Add("Icon", "error");
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dialogParams.Add("ShowOk", true);
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_dialogService.ShowDialog("MessageBox", dialogParams);
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}
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}
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}
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#endregion
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}
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} |