文件命名格式设置支持拖拽

src/DownKyi/ViewModels/Settings/ViewVideoViewModel.cs

@@ -10,6 +10,7 @@ using Prism.Regions;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Collections.Specialized;
 using System.Linq;
 
 namespace DownKyi.ViewModels.Settings
@@ -185,6 +186,20 @@ namespace DownKyi.ViewModels.Settings
 
             // 文件命名格式
             SelectedFileName = new ObservableCollection<DisplayFileNamePart>();
+
+            SelectedFileName.CollectionChanged += new NotifyCollectionChangedEventHandler((sender, e) =>
+            {
+                // 当前显示的命名格式part
+                List<FileNamePart> fileName = new List<FileNamePart>();
+                foreach (DisplayFileNamePart item in SelectedFileName)
+                {
+                    fileName.Add(item.Id);
+                }
+
+                bool isSucceed = SettingsManager.GetInstance().SetFileNameParts(fileName);
+                PublishTip(isSucceed);
+            });
+
             OptionalFields = new ObservableCollection<DisplayFileNamePart>();
             foreach (FileNamePart item in Enum.GetValues(typeof(FileNamePart)))
             {
@@ -511,16 +526,18 @@ namespace DownKyi.ViewModels.Settings
             SetVideoContent();
         }
 
-        // 选中文件名字段点击事件
+        // 选中文件名字段右键点击事件
-        private DelegateCommand<object> selectedFileNameCommand;
+        private DelegateCommand<object> selectedFileNameRightCommand;
-        public DelegateCommand<object> SelectedFileNameCommand => selectedFileNameCommand ?? (selectedFileNameCommand = new DelegateCommand<object>(ExecuteSelectedFileNameCommand));
+        public DelegateCommand<object> SelectedFileNameRightCommand => selectedFileNameRightCommand ?? (selectedFileNameRightCommand = new DelegateCommand<object>(ExecuteSelectedFileNameRightCommand));
 
         /// <summary>
-        /// 选中文件名字段点击事件
+        /// 选中文件名字段右键点击事件
         /// </summary>
         /// <param name="parameter"></param>
-        private void ExecuteSelectedFileNameCommand(object parameter)
+        private void ExecuteSelectedFileNameRightCommand(object parameter)
         {
+            if (parameter == null) { return; }
+
             bool isSucceed = SelectedFileName.Remove((DisplayFileNamePart)parameter);
             if (!isSucceed)
             {
@@ -528,14 +545,14 @@ namespace DownKyi.ViewModels.Settings
                 return;
             }
 
-            List<FileNamePart> fileName = new List<FileNamePart>();
+            //List<FileNamePart> fileName = new List<FileNamePart>();
-            foreach (DisplayFileNamePart item in SelectedFileName)
+            //foreach (DisplayFileNamePart item in SelectedFileName)
-            {
+            //{
-                fileName.Add(item.Id);
+            //    fileName.Add(item.Id);
-            }
+            //}
 
-            isSucceed = SettingsManager.GetInstance().SetFileNameParts(fileName);
+            //isSucceed = SettingsManager.GetInstance().SetFileNameParts(fileName);
-            PublishTip(isSucceed);
+            //PublishTip(isSucceed);
 
             SelectedOptionalField = -1;
         }

src/DownKyi/Views/Settings/ViewVideo.xaml

@@ -264,15 +264,22 @@
                         Grid.Row="1"
                         Grid.Column="1"
                         MinHeight="30"
-                        ItemContainerStyle="{StaticResource TagItem2Style}"
                         ItemsSource="{Binding SelectedFileName, Mode=TwoWay}"
                         SelectionMode="Single"
                         Style="{StaticResource Tag2Style}">
                         <i:Interaction.Triggers>
-                            <i:EventTrigger EventName="SelectionChanged">
+                            <i:EventTrigger EventName="MouseRightButtonUp">
-                                <i:InvokeCommandAction Command="{Binding SelectedFileNameCommand}" CommandParameter="{Binding ElementName=nameSelectedFileName, Path=SelectedItem}" />
+                                <i:InvokeCommandAction Command="{Binding SelectedFileNameRightCommand}" CommandParameter="{Binding ElementName=nameSelectedFileName, Path=SelectedItem}" />
                             </i:EventTrigger>
                         </i:Interaction.Triggers>
+
+                        <ListBox.ItemContainerStyle>
+                            <Style BasedOn="{StaticResource TagItem2Style}" TargetType="{x:Type ListBoxItem}">
+                                <Setter Property="AllowDrop" Value="True" />
+                                <EventSetter Event="PreviewMouseLeftButtonDown" Handler="SelectedFileName_PreviewMouseLeftButtonDown" />
+                                <EventSetter Event="Drop" Handler="SelectedFileName_Drop" />
+                            </Style>
+                        </ListBox.ItemContainerStyle>
                     </ListBox>
 
                     <StackPanel

src/DownKyi/Views/Settings/ViewVideo.xaml.cs

@@ -1,4 +1,8 @@
-using System.Windows.Controls;
+using DownKyi.ViewModels.Settings;
+using System.Collections.ObjectModel;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
 
 namespace DownKyi.Views.Settings
 {
@@ -11,5 +15,44 @@ namespace DownKyi.Views.Settings
         {
             InitializeComponent();
         }
+
+        // ListBox拖拽的代码参考
+        // https://stackoverflow.com/questions/3350187/wpf-c-rearrange-items-in-listbox-via-drag-and-drop
+
+        private void SelectedFileName_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+        {
+            if (sender is ListBoxItem)
+            {
+                ListBoxItem draggedItem = sender as ListBoxItem;
+                DragDrop.DoDragDrop(draggedItem, draggedItem.DataContext, DragDropEffects.Move);
+                draggedItem.IsSelected = true;
+            }
+        }
+
+        private void SelectedFileName_Drop(object sender, DragEventArgs e)
+        {
+            DisplayFileNamePart droppedData = e.Data.GetData(typeof(DisplayFileNamePart)) as DisplayFileNamePart;
+            DisplayFileNamePart target = ((ListBoxItem)sender).DataContext as DisplayFileNamePart;
+
+            int removedIdx = nameSelectedFileName.Items.IndexOf(droppedData);
+            int targetIdx = nameSelectedFileName.Items.IndexOf(target);
+
+            var ItemsSource = (ObservableCollection<DisplayFileNamePart>)nameSelectedFileName.ItemsSource;
+
+            if (removedIdx < targetIdx)
+            {
+                ItemsSource.Insert(targetIdx + 1, droppedData);
+                ItemsSource.RemoveAt(removedIdx);
+            }
+            else
+            {
+                int remIdx = removedIdx + 1;
+                if (ItemsSource.Count + 1 > remIdx)
+                {
+                    ItemsSource.Insert(targetIdx, droppedData);
+                    ItemsSource.RemoveAt(remIdx);
+                }
+            }
+        }
     }
 }