Sidebar - Added profile reordering and moving to different categories

2026-11-12 11:56:30 +00:00 · 2022-05-27 10:06:47 +02:00
1 parent cd97ed420c
commit bcd03becc7
@@ -0,0 +1,124 @@
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using Artemis.Core;
+using Artemis.UI.Screens.ProfileEditor.ProfileTree;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.Generators;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.VisualTree;
+using Avalonia.Xaml.Interactions.DragAndDrop;
+
+namespace Artemis.UI.Screens.Sidebar.Behaviors;
+
+public class SidebarCategoryViewDropHandler : DropHandlerBase
+{
+    private bool Validate(ListBox listBox, DragEventArgs e, object? sourceContext, object? targetContext, bool bExecute)
+    {
+        if (sourceContext is not SidebarProfileConfigurationViewModel sourceItem || targetContext is not SidebarCategoryViewModel vm ||
+            listBox.GetVisualAt(e.GetPosition(listBox)) is not IControl targetControl)
+            return false;
+        if (e.DragEffects != DragDropEffects.Move)
+            return false;
+
+        SidebarProfileConfigurationViewModel? targetItem = targetControl.DataContext as SidebarProfileConfigurationViewModel;
+        ListBoxItem? targetVisual = null;
+        bool before = true;
+        if (targetItem != null)
+        {
+            Point position = e.GetPosition(listBox);
+            targetVisual = listBox.GetVisualAt(position).FindAncestorOfType<ListBoxItem>();
+            if (targetVisual != null)
+            {
+                Point positionInTarget = e.GetPosition(targetVisual);
+                if (positionInTarget.Y > (targetVisual.Bounds.Height / 2))
+                    before = false;
+            }
+        }
+
+        foreach (ItemContainerInfo? item in listBox.ItemContainerGenerator.Containers)
+            SetDraggingPseudoClasses(item.ContainerControl, false, false);
+
+        if (bExecute)
+        {
+            if (targetItem != null)
+            {
+                int index = vm.ProfileConfigurations.IndexOf(targetItem);
+                if (!before)
+                    index++;
+                vm.AddProfileConfiguration(sourceItem.ProfileConfiguration, index);
+            }
+            else
+            {
+                vm.AddProfileConfiguration(sourceItem.ProfileConfiguration, null);
+            }
+        }
+        else if (targetVisual != null)
+        {
+            SetDraggingPseudoClasses(targetVisual, true, before);
+        }
+
+        return true;
+    }
+
+    public override bool Validate(object? sender, DragEventArgs e, object? sourceContext, object? targetContext, object? state)
+    {
+        if (sender is ItemsControl itemsControl)
+        {
+            foreach (ItemContainerInfo? item in itemsControl.ItemContainerGenerator.Containers)
+                SetDraggingPseudoClasses(item.ContainerControl, false, false);
+        }
+
+        if (e.Source is IControl && sender is ListBox listBox)
+        {
+            return Validate(listBox, e, sourceContext, targetContext, false);
+        }
+
+        return false;
+    }
+
+    public override bool Execute(object? sender, DragEventArgs e, object? sourceContext, object? targetContext, object? state)
+    {
+        if (sender is ItemsControl itemsControl)
+        {
+            foreach (ItemContainerInfo? item in itemsControl.ItemContainerGenerator.Containers)
+                SetDraggingPseudoClasses(item.ContainerControl, false, false);
+        }
+
+        if (e.Source is IControl && sender is ListBox listBox)
+        {
+            return Validate(listBox, e, sourceContext, targetContext, true);
+        }
+
+        return false;
+    }
+
+    private void SetDraggingPseudoClasses(IControl control, bool dragging, bool before)
+    {
+        if (!dragging)
+        {
+            ((IPseudoClasses) control.Classes).Remove(":dragging");
+            ((IPseudoClasses) control.Classes).Remove(":dragging-before");
+            ((IPseudoClasses) control.Classes).Remove(":dragging-after");
+            ((IPseudoClasses) control.Classes).Remove(":dragging-into");
+        }
+        else
+        {
+            ((IPseudoClasses) control.Classes).Add(":dragging");
+            if (before)
+            {
+                ((IPseudoClasses) control.Classes).Add(":dragging-before");
+                ((IPseudoClasses) control.Classes).Remove(":dragging-after");
+                ((IPseudoClasses) control.Classes).Remove(":dragging-into");
+            }
+            else
+            {
+                ((IPseudoClasses) control.Classes).Remove(":dragging-before");
+                ((IPseudoClasses) control.Classes).Add(":dragging-after");
+                ((IPseudoClasses) control.Classes).Remove(":dragging-into");
+            }
+        }
+    }
+}