138 lines
4.6 KiB
C#
138 lines
4.6 KiB
C#
using System.ComponentModel;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Controls.Primitives;
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using YY.Admin.ViewModels.RawMaterialEntry;
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namespace YY.Admin.Views.RawMaterialEntry;
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public partial class RawMaterialEntryOperationView : UserControl
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{
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private RawMaterialEntryOperationViewModel? _vm;
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private bool _initialized;
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public RawMaterialEntryOperationView()
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{
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InitializeComponent();
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Loaded += OnLoaded;
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DataContextChanged += OnDataContextChanged;
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Unloaded += (_, _) => DetachVm();
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}
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private void OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
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{
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DetachVm();
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if (DataContext is RawMaterialEntryOperationViewModel vm)
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{
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_vm = vm;
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vm.PropertyChanged += OnVmPropertyChanged;
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vm.PrintPreviewHtmlReady += OnPrintPreviewHtmlReady;
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vm.StartPrintPreviewTimer();
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}
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ApplySplitLayout();
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}
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private void DetachVm()
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{
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if (_vm != null)
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{
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_vm.PropertyChanged -= OnVmPropertyChanged;
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_vm.PrintPreviewHtmlReady -= OnPrintPreviewHtmlReady;
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_vm.StopPrintPreviewTimer();
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_vm = null;
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}
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}
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private void OnVmPropertyChanged(object? sender, PropertyChangedEventArgs e)
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{
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// null/空 表示“所有属性”通知（Prism/BindableBase 批量刷新时），需同步分割布局
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if (!string.IsNullOrEmpty(e.PropertyName)
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&& e.PropertyName is not nameof(RawMaterialEntryOperationViewModel.IsRightPanelExpanded)
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&& e.PropertyName is not nameof(RawMaterialEntryOperationViewModel.ExpandedRightPanelWidth))
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return;
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_ = Dispatcher.InvokeAsync(ApplySplitLayout);
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}
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/// <summary>按钮 Click 在 Command 之后执行，用于兜底刷新列宽（不重复切换状态）。</summary>
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private void ToggleTodayPanelButton_OnClick(object sender, RoutedEventArgs e) => ApplySplitLayout();
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private void OnLoaded(object sender, RoutedEventArgs e)
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{
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// 兜底：XAML 解析 prism:AutoWireViewModel 时设置 DataContext 早于构造函数订阅 DataContextChanged，
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// 首次进入页面 OnDataContextChanged 会错过回调，导致 _vm 为 null、PropertyChanged 未挂接，
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// 表现为「首次点击展开/收起按钮不生效」。这里在 Loaded 时补一次订阅。
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EnsureVmAttached();
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ApplySplitLayout();
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if (DataContext is RawMaterialEntryOperationViewModel vm && !_initialized)
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{
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vm.InitializeForAdd();
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_initialized = true;
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_ = vm.LoadTodayEntriesOnFirstShowAsync();
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}
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}
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private void EnsureVmAttached()
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{
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if (_vm != null) return;
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if (DataContext is RawMaterialEntryOperationViewModel vm)
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{
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_vm = vm;
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vm.PropertyChanged += OnVmPropertyChanged;
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vm.PrintPreviewHtmlReady += OnPrintPreviewHtmlReady;
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vm.StartPrintPreviewTimer();
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}
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}
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private async void OnPrintPreviewHtmlReady(object? sender, string html)
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{
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try
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{
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await PrintPreviewWebView.EnsureCoreWebView2Async();
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PrintPreviewWebView.NavigateToString(html ?? string.Empty);
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}
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catch
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{
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/* WebView2 未就绪或宿主已释放时忽略 */
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}
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}
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/// <summary>
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/// 根据 ViewModel 同步右侧栏与分割条：展开时使用持久化宽度；折叠时右栏与分割条占宽均为 0（完全隐藏）。
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/// </summary>
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private void ApplySplitLayout()
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{
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var vm = _vm ?? DataContext as RawMaterialEntryOperationViewModel;
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if (vm == null) return;
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if (vm.IsRightPanelExpanded)
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{
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RightPaneSplitter.Visibility = Visibility.Visible;
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SplitterCol.Width = new GridLength(4);
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RightPaneCol.Width = new GridLength(vm.ExpandedRightPanelWidth);
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}
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else
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{
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RightPaneSplitter.Visibility = Visibility.Collapsed;
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SplitterCol.Width = new GridLength(0);
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RightPaneCol.Width = new GridLength(0);
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}
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MainSplitRoot.InvalidateMeasure();
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MainSplitRoot.UpdateLayout();
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}
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private void RightPaneSplitter_OnDragCompleted(object sender, DragCompletedEventArgs e)
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{
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var vm = _vm ?? DataContext as RawMaterialEntryOperationViewModel;
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if (vm == null || !vm.IsRightPanelExpanded || e.Canceled) return;
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var w = RightPaneCol.ActualWidth;
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if (w >= 120)
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vm.CommitRightPanelWidthFromView(w);
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}
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}
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