1 files changed, 250 insertions, 0 deletions
diff --git a/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Utils/WindowHelper.cs b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Utils/WindowHelper.cs
new file mode 100644
index 00000000..7b8972b4
--- /dev/null
+++ b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Utils/WindowHelper.cs
@@ -0,0 +1,250 @@
+#if UNITY_EDITOR
+using System;
+using System.Reflection;
+using UnityEditor;
+using UnityEngine;
+
+public static class WindowHelper
+{
+	private class R_EditorWindow
+	{
+		private EditorWindow m_instance;
+		private System.Type m_type;
+
+		public R_EditorWindow( EditorWindow instance )
+		{
+			m_instance = instance;
+			m_type = instance.GetType();
+		}
+
+		public object Parent
+		{
+			get
+			{
+				var field = m_type.GetField( "m_Parent", BindingFlags.Instance | BindingFlags.NonPublic );
+				return field.GetValue( m_instance );
+			}
+		}
+
+		public object Docked
+		{
+			get
+			{
+				var property = m_type.GetProperty( "docked", BindingFlags.Instance | BindingFlags.NonPublic );
+				return property.GetValue( m_instance, null );
+			}
+		}
+	}
+
+	private class R_DockArea
+	{
+		private object m_instance;
+		private System.Type m_type;
+
+		public R_DockArea( object instance )
+		{
+			m_instance = instance;
+			m_type = instance.GetType();
+		}
+
+		public object Window
+		{
+			get
+			{
+				var property = m_type.GetProperty( "window", BindingFlags.Instance | BindingFlags.Public );
+				return property.GetValue( m_instance, null );
+			}
+		}
+
+		public object ActualView
+		{
+			get
+			{
+				var field = m_type.GetField( "m_ActualView", BindingFlags.Instance | BindingFlags.NonPublic );
+				return field.GetValue( m_instance );
+			}
+		}
+
+		public object OriginalDragSource
+		{
+			set
+			{
+				var field = m_type.GetField( "s_OriginalDragSource", BindingFlags.Static | BindingFlags.NonPublic );
+				field.SetValue( null, value );
+			}
+		}
+
+
+		public void AddTab( EditorWindow pane )
+		{
+#if UNITY_2018_3_OR_NEWER
+			var method = m_type.GetMethod( "AddTab", BindingFlags.Instance | BindingFlags.Public, null, new System.Type[] { typeof( EditorWindow ), typeof( bool ) }, null );
+			method.Invoke( m_instance, new object[] { pane, true } );
+#else
+			var method = m_type.GetMethod( "AddTab", BindingFlags.Instance | BindingFlags.Public, null, new System.Type[] { typeof( EditorWindow ) }, null );
+			method.Invoke( m_instance, new object[] { pane } );
+#endif
+		}
+
+		public void RemoveTab( EditorWindow pane )
+		{
+			var method = m_type.GetMethod( "RemoveTab", BindingFlags.Instance | BindingFlags.Public, null, new System.Type[] { typeof( EditorWindow ) }, null );
+			method.Invoke( m_instance, new object[] { pane } );
+		}
+	}
+
+	private class R_ContainerWindow
+	{
+		private object m_instance;
+		private System.Type m_type;
+
+		public R_ContainerWindow( object instance )
+		{
+			m_instance = instance;
+			m_type = instance.GetType();
+		}
+
+		public object RootSplitView
+		{
+			get
+			{
+				var property = m_type.GetProperty( "rootSplitView", BindingFlags.Instance | BindingFlags.Public );
+				return property.GetValue( m_instance, null );
+			}
+		}
+
+		public object RootView
+		{
+			get
+			{
+				var property = m_type.GetProperty( "rootView", BindingFlags.Instance | BindingFlags.Public );
+				return property.GetValue( m_instance, null );
+			}
+		}
+
+		public object WindowPtr
+		{
+			get
+			{
+				var all = m_type.GetNestedTypes();
+				foreach( var item in all )
+				{
+					Debug.Log( item.Name );
+				}
+				var property = m_type.GetField( "m_WindowPtr", BindingFlags.Instance | BindingFlags.NonPublic );
+				return property.GetValue( m_instance );
+			}
+		}
+	}
+
+	private class R_SplitView
+	{
+		private object m_instance;
+		private System.Type m_type;
+
+		public R_SplitView( object instance )
+		{
+			m_instance = instance;
+			m_type = instance.GetType();
+		}
+
+		public object DragOver( EditorWindow child, Vector2 screenPoint )
+		{
+			var method = m_type.GetMethod( "DragOver", BindingFlags.Instance | BindingFlags.Public );
+			return method.Invoke( m_instance, new object[] { child, screenPoint } );
+		}
+
+		public void PerformDrop( EditorWindow child, object dropInfo, Vector2 screenPoint )
+		{
+			var method = m_type.GetMethod( "PerformDrop", BindingFlags.Instance | BindingFlags.Public );
+			method.Invoke( m_instance, new object[] { child, dropInfo, screenPoint } );
+		}
+	}
+
+	public enum DockPosition
+	{
+		Left,
+		Top,
+		Right,
+		Bottom
+	}
+
+	public static bool IsDocked( this EditorWindow wnd )
+	{
+		var parent = new R_EditorWindow( wnd );
+		return (bool)parent.Docked;
+	}
+
+	public static void Undock( this EditorWindow wnd )
+	{
+		var parent = new R_EditorWindow( wnd );
+		var dockArea = new R_DockArea( parent.Parent );
+		dockArea.RemoveTab( wnd );
+		wnd.Show( true );
+	}
+
+	public static void RemoveTab( this EditorWindow wnd )
+	{
+		var parent = new R_EditorWindow( wnd );
+		var dockArea = new R_DockArea( parent.Parent );
+		dockArea.RemoveTab( wnd );
+	}
+
+	/// <summary>
+	/// Docks the second window to the first window at the given position
+	/// </summary>
+	public static void Dock( this EditorWindow wnd, EditorWindow other, DockPosition position )
+	{
+		var mousePosition = GetFakeMousePosition( wnd, position );
+
+		var parent = new R_EditorWindow( wnd );
+		var child = new R_EditorWindow( other );
+		var dockArea = new R_DockArea( parent.Parent );
+		var containerWindow = new R_ContainerWindow( dockArea.Window );
+		var splitView = new R_SplitView( containerWindow.RootSplitView );
+		var dropInfo = splitView.DragOver( other, mousePosition );
+		dockArea.OriginalDragSource = child.Parent;
+		splitView.PerformDrop( other, dropInfo, mousePosition );
+	}
+
+
+	/// <summary>
+	/// Adds the the second window as a tab at the end of the first window tab list
+	/// </summary>
+	/// <param name="existingWindow"></param>
+	/// <param name="newWindow"></param>
+	public static void AddTab( this EditorWindow existingWindow, EditorWindow newWindow )
+	{
+		var parent = new R_EditorWindow( existingWindow );
+		var child = new R_EditorWindow( newWindow );
+		var dockArea = new R_DockArea( parent.Parent );
+		dockArea.OriginalDragSource = child.Parent;
+		dockArea.AddTab( newWindow );
+	}
+
+	private static Vector2 GetFakeMousePosition( EditorWindow wnd, DockPosition position )
+	{
+		Vector2 mousePosition = Vector2.zero;
+
+		// The 20 is required to make the docking work.
+		// Smaller values might not work when faking the mouse position.
+		switch ( position )
+		{
+			case DockPosition.Left:
+			mousePosition = new Vector2( 20, wnd.position.size.y / 2 );
+			break;
+			case DockPosition.Top:
+			mousePosition = new Vector2( wnd.position.size.x / 2, 20 );
+			break;
+			case DockPosition.Right:
+			mousePosition = new Vector2( wnd.position.size.x - 20, wnd.position.size.y / 2 );
+			break;
+			case DockPosition.Bottom:
+			mousePosition = new Vector2( wnd.position.size.x / 2, wnd.position.size.y - 20 );
+			break;
+		}
+
+		return GUIUtility.GUIToScreenPoint( mousePosition );
+	}
+}
+#endif