enhance: disable some MenuItems if repository that linked by node has been auto-removed from Preference (#90).

Author: love-linger

src/ViewModels/Welcome.cs

@@ -1,6 +1,7 @@
 using System;
 
 using Avalonia.Collections;
+using Avalonia.Controls;
 
 using CommunityToolkit.Mvvm.ComponentModel;
 
@@ -79,7 +80,7 @@ public void ClearSearchFilter()
             SearchFilter = string.Empty;
         }
 
-        public void AddFolder()
+        public void AddRootNode()
         {
             if (PopupHost.CanCreatePopup())
                 PopupHost.ShowPopup(new CreateGroup(null));
@@ -90,6 +91,72 @@ public void MoveNode(RepositoryNode from, RepositoryNode to)
             Preference.MoveNode(from, to);
         }
 
+        public ContextMenu CreateContextMenu(RepositoryNode node)
+        {
+            var menu = new ContextMenu();
+            var hasRepo = Preference.FindRepository(node.Id) != null;
+
+            var edit = new MenuItem();
+            edit.Header = App.Text("Welcome.Edit");
+            edit.Icon = App.CreateMenuIcon("Icons.Edit");
+            edit.IsEnabled = !node.IsRepository || hasRepo;
+            edit.Click += (_, e) =>
+            {
+                node.Edit();
+                e.Handled = true;
+            };
+            menu.Items.Add(edit);
+
+            if (node.IsRepository)
+            {
+                var explore = new MenuItem();
+                explore.Header = App.Text("Repository.Explore");
+                explore.Icon = App.CreateMenuIcon("Icons.Folder.Open");
+                explore.IsEnabled = hasRepo;
+                explore.Click += (_, e) =>
+                {
+                    node.OpenInFileManager();
+                    e.Handled = true;
+                };
+                menu.Items.Add(explore);
+
+                var terminal = new MenuItem();
+                terminal.Header = App.Text("Repository.Terminal");
+                terminal.Icon = App.CreateMenuIcon("Icons.Terminal");
+                terminal.IsEnabled = hasRepo;
+                terminal.Click += (_, e) =>
+                {
+                    node.OpenTerminal();
+                    e.Handled = true;
+                };
+                menu.Items.Add(terminal);
+            }
+            else
+            {
+                var addSubFolder = new MenuItem();
+                addSubFolder.Header = App.Text("Welcome.AddSubFolder");
+                addSubFolder.Icon = App.CreateMenuIcon("Icons.Folder.Add");
+                addSubFolder.Click += (_, e) =>
+                {
+                    node.AddSubFolder();
+                    e.Handled = true;
+                };
+                menu.Items.Add(addSubFolder);
+            }
+
+            var delete = new MenuItem();
+            delete.Header = App.Text("Welcome.Delete");
+            delete.Icon = App.CreateMenuIcon("Icons.Clear");
+            delete.Click += (_, e) =>
+            {
+                node.Delete();
+                e.Handled = true;
+            };
+            menu.Items.Add(delete);
+
+            return menu;
+        }
+
         private void Referesh()
         {
             if (string.IsNullOrWhiteSpace(_searchFilter))

src/Views/Welcome.axaml

@@ -57,7 +57,7 @@
                   LostFocus="OnTreeViewLostFocus">
           <TreeView.ContextMenu>
             <ContextMenu>
-              <MenuItem Header="{DynamicResource Text.Welcome.AddRootFolder}" Command="{Binding AddFolder}">
+              <MenuItem Header="{DynamicResource Text.Welcome.AddRootFolder}" Command="{Binding AddRootNode}">
                 <MenuItem.Icon>
                   <Path Width="12" Height="12" Data="{DynamicResource Icons.Folder.Add}"/>
                 </MenuItem.Icon>
@@ -70,37 +70,6 @@
               <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}"/>
               <Setter Property="IsVisible" Value="{Binding IsVisible}"/>
               <Setter Property="CornerRadius" Value="4"/>
-              <Setter Property="ContextMenu">
-                <Setter.Value>
-                  <ContextMenu>
-                    <MenuItem Header="{DynamicResource Text.Welcome.Edit}" Command="{Binding Edit}">
-                      <MenuItem.Icon>
-                        <Path Width="12" Height="12" Data="{DynamicResource Icons.Edit}"/>
-                      </MenuItem.Icon>
-                    </MenuItem>
-                    <MenuItem Header="{DynamicResource Text.Welcome.AddSubFolder}" Command="{Binding AddSubFolder}" IsVisible="{Binding !IsRepository}">
-                      <MenuItem.Icon>
-                        <Path Width="12" Height="12" Data="{DynamicResource Icons.Folder.Add}"/>
-                      </MenuItem.Icon>
-                    </MenuItem>
-                    <MenuItem Header="{DynamicResource Text.Repository.Explore}" Command="{Binding OpenInFileManager}" IsVisible="{Binding IsRepository}">
-                      <MenuItem.Icon>
-                        <Path Width="12" Height="12" Data="{DynamicResource Icons.Folder.Open}"/>
-                      </MenuItem.Icon>
-                    </MenuItem>
-                    <MenuItem Header="{DynamicResource Text.Repository.Terminal}" Command="{Binding OpenTerminal}" IsVisible="{Binding IsRepository}">
-                      <MenuItem.Icon>
-                        <Path Width="12" Height="12" Data="{DynamicResource Icons.Terminal}"/>
-                      </MenuItem.Icon>
-                    </MenuItem>
-                    <MenuItem Header="{DynamicResource Text.Welcome.Delete}" Command="{Binding Delete}">
-                      <MenuItem.Icon>
-                        <Path Width="12" Height="12" Data="{DynamicResource Icons.Clear}"/>
-                      </MenuItem.Icon>
-                    </MenuItem>
-                  </ContextMenu>
-                </Setter.Value>
-              </Setter>
             </Style>
           </TreeView.Styles>
 
@@ -109,11 +78,12 @@
               <Grid Height="30"
                     ColumnDefinitions="Auto,Auto,*"
                     Background="Transparent"
+                    Loaded="SetupTreeNodeDragAndDrop"
+                    ContextRequested="OnTreeNodeContextRequested"
                     PointerPressed="OnPointerPressedTreeNode"
                     PointerMoved="OnPointerMovedOverTreeNode"
                     PointerReleased="OnPointerReleasedOnTreeNode"
                     DoubleTapped="OnDoubleTappedTreeNode"
-                    Loaded="SetupTreeNodeDragAndDrop"
                     ClipToBounds="True">
                 <Path Grid.Column="0" Width="12" Height="12" Margin="0,0,8,0"
                       Fill="{Binding Bookmark, Converter={x:Static c:BookmarkConverters.ToBrush}}"

src/Views/Welcome.axaml.cs

@@ -37,6 +37,16 @@ private void SetupTreeNodeDragAndDrop(object sender, RoutedEventArgs e)
             }
         }
 
+        private void OnTreeNodeContextRequested(object sender, ContextRequestedEventArgs e)
+        {
+            if (sender is Grid grid && DataContext is ViewModels.Welcome vm)
+            {
+                var menu = vm.CreateContextMenu(grid.DataContext as ViewModels.RepositoryNode);
+                menu?.Open(grid);
+                e.Handled = true;
+            }
+        }
+
         private void OnPointerPressedTreeNode(object sender, PointerPressedEventArgs e)
         {
             if (e.GetCurrentPoint(sender as Visual).Properties.IsLeftButtonPressed)