Add buttons for collapse and expand with icons

ModMyFactoryGUI/Controls/Icons/CollapseAllIcon.xaml

@@ -0,0 +1,17 @@
+<!--
+Copyright (C) 2020-2021 Mathis Rech
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+-->
+
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="ModMyFactoryGUI.Controls.Icons.CollapseAllIcon">
+
+  <Grid Width="24" Height="24">
+    <Path Fill="{DynamicResource IconBaseBrush1}" Data="M4,2A2,2 0 0,0 2,4V14H4V4H14V2H4M8,6A2,2 0 0,0 6,8V18H8V8H18V6H8M20,12V20H12V12H20M20,10H12A2,2 0 0,0 10,12V20A2,2 0 0,0 12,22H20A2,2 0 0,0 22,20V12A2,2 0 0,0 20,10M19,17H13V15H19V17Z" />
+  </Grid>
+</UserControl>

ModMyFactoryGUI/Controls/Icons/CollapseAllIcon.xaml.cs

@@ -0,0 +1,25 @@
+//  Copyright (C) 2020-2021 Mathis Rech
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace ModMyFactoryGUI.Controls.Icons
+{
+    internal class CollapseAllIcon : UserControl
+    {
+        public CollapseAllIcon()
+        {
+            InitializeComponent();
+        }
+
+        private void InitializeComponent()
+        {
+            AvaloniaXamlLoader.Load(this);
+        }
+    }
+}

ModMyFactoryGUI/Controls/Icons/ExpandAllIcon.xaml

@@ -0,0 +1,17 @@
+<!--
+Copyright (C) 2020-2021 Mathis Rech
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+-->
+
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="ModMyFactoryGUI.Controls.Icons.ExpandAllIcon">
+
+  <Grid Width="24" Height="24">
+    <Path Fill="{DynamicResource IconBaseBrush1}" Data="M4,2A2,2 0 0,0 2,4V14H4V4H14V2H4M8,6A2,2 0 0,0 6,8V18H8V8H18V6H8M20,12V20H12V12H20M20,10H12A2,2 0 0,0 10,12V20A2,2 0 0,0 12,22H20A2,2 0 0,0 22,20V12A2,2 0 0,0 20,10M19,17H17V19H15V17H13V15H15V13H17V15H19V17Z" />
+  </Grid>
+</UserControl>

ModMyFactoryGUI/Controls/Icons/ExpandAllIcon.xaml.cs

@@ -0,0 +1,25 @@
+//  Copyright (C) 2020-2021 Mathis Rech
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace ModMyFactoryGUI.Controls.Icons
+{
+    internal class ExpandAllIcon : UserControl
+    {
+        public ExpandAllIcon()
+        {
+            InitializeComponent();
+        }
+
+        private void InitializeComponent()
+        {
+            AvaloniaXamlLoader.Load(this);
+        }
+    }
+}

ModMyFactoryGUI/ViewModels/ModpackViewModel.cs

@@ -58,6 +58,12 @@ public bool IsRenaming
             }
         }
 
+        public bool IsExpanded
+        {
+            get => _isExpanded;
+            set => this.RaiseAndSetIfChanged(ref _isExpanded, value);
+        }
+
         // Store information for fuzzy search
         public bool MatchesSearch { get; private set; } = true;
 
@@ -118,6 +124,7 @@ public void ApplyFuzzyFilter(in string filter)
         #region IDisposable Support
 
         private bool _disposed = false;
+        private bool _isExpanded = false;
 
         private void Dispose(bool disposing)
         {

ModMyFactoryGUI/Views/ManagerView.xaml

@@ -112,7 +112,19 @@ the Free Software Foundation, either version 3 of the License, or
       <Border Grid.Column="2" Grid.Row="0" Margin="0,4,4,4" Background="{DynamicResource ThemeAccentBrush2}">
         <DockPanel Margin="4,2">
           <CheckBox DockPanel.Dock="Left" VerticalAlignment="Center" IsChecked="{Binding AllModpacksEnabled, Mode=TwoWay}" />
-          <TextBlock Margin="6,0,2,0" VerticalAlignment="Center" Classes="h2" FontWeight="SemiBold" Text="{l:LocalizedResource ModpacksHeader}" />
+          <Button Click="ExpandAllModpacks_OnClick" DockPanel.Dock="Right" >
+            <StackPanel Orientation="Horizontal">
+              <icons:ExpandAllIcon HorizontalAlignment="Center" />
+              <TextBlock Margin="4" Text="{l:LocalizedResource ExpandAll}" TextAlignment="Center" />
+            </StackPanel>
+          </Button>
+          <Button  DockPanel.Dock="Right" Margin="4,0" Click="CollapseAllModpacks_OnClick" >
+            <StackPanel Orientation="Horizontal">
+              <icons:CollapseAllIcon HorizontalAlignment="Center" />
+              <TextBlock Margin="4" Text="{l:LocalizedResource CollapseAll}" TextAlignment="Center" />
+            </StackPanel>
+          </Button>
+          <TextBlock Margin="6,0,2,0" DockPanel.Dock="Left" VerticalAlignment="Center" Classes="h2" FontWeight="SemiBold" Text="{l:LocalizedResource ModpacksHeader}" />
         </DockPanel>
       </Border>
 
@@ -125,7 +137,7 @@ the Free Software Foundation, either version 3 of the License, or
                                 PreviewPointerMoved="PointerMovedHandler" DragOver="DragOverHandler" Drop="DropHandler">
         <controls:DragDropListBox.ItemTemplate>
           <DataTemplate DataType="{x:Type models:ModpackViewModel}">
-            <Expander Background="Transparent">
+            <Expander Background="Transparent" IsExpanded="{Binding IsExpanded}">
 
               <Expander.Header>
                 <Grid ColumnDefinitions="Auto,Auto,Auto,Auto,*">

ModMyFactoryGUI/Views/ManagerView.xaml.cs

@@ -18,6 +18,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using Avalonia.LogicalTree;
 
 namespace ModMyFactoryGUI.Views
 {
@@ -240,5 +241,29 @@ public void ScrollModpackIntoView(ModpackViewModel vm)
             var listBox = this.FindControl<ListBox>("ModpackList");
             listBox.ScrollIntoView(vm);
         }
+
+        private void ExpandAllModpacks_OnClick(object? sender, RoutedEventArgs e)
+        {
+            var listBox = this.FindControl<ListBox>("ModpackList");
+            foreach (var modpack in listBox.Items)
+            {
+                if (modpack is ModpackViewModel modpackVm)
+                {
+                    modpackVm.IsExpanded = true;
+                }
+            }
+        }
+
+        private void CollapseAllModpacks_OnClick(object? sender, RoutedEventArgs e)
+        {
+            var listBox = this.FindControl<ListBox>("ModpackList");
+            foreach (var modpack in listBox.Items)
+            {
+                if (modpack is ModpackViewModel modpackVm)
+                {
+                    modpackVm.IsExpanded = false;
+                }
+            }
+        }
     }
 }

ModMyFactoryGUI/lang/en.json

@@ -273,6 +273,14 @@
     "type": "string",
     "value": "Alt+F4"
   },
+  "CollapseAll": {
+    "type": "string",
+    "value": "Collapse all"
+  },
+  "ExpandAll": {
+    "type": "string",
+    "value": "Expand all"
+  },
 
   // Edit menu
   "EditMenuItem": {