130 lines
4.3 KiB
C#
130 lines
4.3 KiB
C#
using HandyControl.Tools.Extension;
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using System.Collections.ObjectModel;
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using YY.Admin.Core;
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using YY.Admin.Core.Entity;
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using YY.Admin.Core.Services;
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namespace YY.Admin.ViewModels.WeightRecord;
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public class MixerMaterialPickerDialogViewModel : BaseViewModel, IDialogResultable<bool>
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{
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private readonly IMixerMaterialService _mixerMaterialService;
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private string? _searchCode;
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public string? SearchCode { get => _searchCode; set => SetProperty(ref _searchCode, value); }
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private string? _searchName;
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public string? SearchName { get => _searchName; set => SetProperty(ref _searchName, value); }
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public ObservableCollection<SelectableMixerMaterial> Materials { get; } = new();
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public IReadOnlyList<SelectableMixerMaterial> SelectedMaterials =>
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Materials.Where(m => m.IsSelected).ToList();
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public int SelectedCount => Materials.Count(m => m.IsSelected);
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public string SelectedDisplayText
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{
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get
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{
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var names = Materials.Where(m => m.IsSelected).Select(m => m.Source.MaterialName).ToList();
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return names.Count == 0 ? "请在上方列表中勾选物料，可多选" : string.Join("；", names);
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}
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}
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public bool HasSelectedMaterials => Materials.Any(m => m.IsSelected);
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private bool _result;
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public bool Result { get => _result; set => SetProperty(ref _result, value); }
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public Action? CloseAction { get; set; }
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public DelegateCommand SearchCommand { get; }
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public DelegateCommand ConfirmCommand { get; }
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public DelegateCommand CancelCommand { get; }
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public DelegateCommand ClearSelectionCommand { get; }
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public MixerMaterialPickerDialogViewModel(
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IMixerMaterialService mixerMaterialService,
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IContainerExtension container,
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IRegionManager regionManager) : base(container, regionManager)
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{
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_mixerMaterialService = mixerMaterialService;
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SearchCommand = new DelegateCommand(async () => await LoadAsync());
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ConfirmCommand = new DelegateCommand(Confirm, () => HasSelectedMaterials);
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CancelCommand = new DelegateCommand(() => CloseAction?.Invoke());
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ClearSelectionCommand = new DelegateCommand(ClearSelection);
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_ = LoadAsync();
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}
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private async Task LoadAsync()
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{
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try
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{
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IsLoading = true;
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var selectedIds = Materials.Where(m => m.IsSelected).Select(m => m.Source.Id).ToHashSet();
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var result = await _mixerMaterialService.PageAsync(1, 500,
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materialCode: SearchCode?.Trim(),
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materialName: SearchName?.Trim());
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Materials.Clear();
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foreach (var mat in result.Records)
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{
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var item = new SelectableMixerMaterial(mat);
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if (selectedIds.Contains(mat.Id)) item.IsSelected = true;
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item.SelectionChanged += NotifySelectionChanged;
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Materials.Add(item);
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}
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NotifySelectionChanged();
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}
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catch
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{
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Materials.Clear();
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}
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finally
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{
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IsLoading = false;
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}
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}
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private void NotifySelectionChanged()
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{
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RaisePropertyChanged(nameof(SelectedCount));
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RaisePropertyChanged(nameof(SelectedDisplayText));
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RaisePropertyChanged(nameof(HasSelectedMaterials));
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ConfirmCommand.RaiseCanExecuteChanged();
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}
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private void ClearSelection()
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{
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foreach (var m in Materials) m.IsSelected = false;
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}
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private void Confirm()
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{
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if (!HasSelectedMaterials) return;
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Result = true;
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CloseAction?.Invoke();
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}
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public class SelectableMixerMaterial : System.ComponentModel.INotifyPropertyChanged
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{
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public event System.ComponentModel.PropertyChangedEventHandler? PropertyChanged;
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public event Action? SelectionChanged;
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private bool _isSelected;
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public bool IsSelected
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{
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get => _isSelected;
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set
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{
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if (_isSelected == value) return;
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_isSelected = value;
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PropertyChanged?.Invoke(this, new System.ComponentModel.PropertyChangedEventArgs(nameof(IsSelected)));
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SelectionChanged?.Invoke();
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}
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}
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public MesMixerMaterial Source { get; }
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public SelectableMixerMaterial(MesMixerMaterial source) => Source = source;
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}
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}
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