module-navigation-tool/Editor/Toolbar/Utilities/ToolbarUtility.cs

84 lines
3.1 KiB
C#

using System;
using System.Collections.Generic;
using UnityEngine;
using System.Reflection;
using System.Runtime.Serialization;
using Object = UnityEngine.Object;
#if UNITY_2019_1_OR_NEWER
using UnityEngine.UIElements;
#else
using UnityEngine.Experimental.UIElements;
#endif
namespace Game.NavigationTool.Editor.Toolbar
{
internal static class ToolbarUtility
{
public static void AddGuiListener(Action action)
{
Assembly assembly = typeof(UnityEditor.Editor).Assembly;
Type typeToolbar = assembly.GetType("UnityEditor.Toolbar");
Object[] toolbars = Resources.FindObjectsOfTypeAll(typeToolbar);
ScriptableObject so = toolbars.Length > 0 ? (ScriptableObject)toolbars[0] : null;
if (so == null)
return;
Type typeGuiView = assembly.GetType("UnityEditor.GUIView");
#if UNITY_2020_1_OR_NEWER
Type typeWindowBackend = assembly.GetType("UnityEditor.IWindowBackend");
PropertyInfo piWindowBackend = typeGuiView.GetProperty("windowBackend", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
PropertyInfo piVisualTree = typeWindowBackend.GetProperty("visualTree", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
#else
PropertyInfo piVisualTree = typeGuiView.GetProperty("visualTree", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
#endif
if (piVisualTree == null)
return;
FieldInfo fiImguiContainer = typeof(IMGUIContainer).GetField("m_OnGUIHandler", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
if (fiImguiContainer == null)
return;
#if UNITY_2020_1_OR_NEWER
var windowBackend = piWindowBackend.GetValue(so);
var visualTree = (VisualElement)piVisualTree.GetValue(windowBackend, null);
#else
var visualTree = (VisualElement)piVisualTree.GetValue(so, null);
#endif
var container = (IMGUIContainer)visualTree[0];
var handler = (Action)fiImguiContainer.GetValue(container);
handler -= action;
handler += action;
fiImguiContainer.SetValue(container, handler);
}
public static IToolbarDrawer[] GetAllDrawers()
{
Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
Type iType = typeof(IToolbarDrawer);
var list = new List<IToolbarDrawer>(8);
for (var i = 0; i < assemblies.Length; i++)
{
Assembly assembly = assemblies[i];
Type[] types = assembly.GetTypes();
for (var j = 0; j < types.Length; j++)
{
Type type = types[j];
if (!type.IsAbstract && iType.IsAssignableFrom(type))
list.Add((IToolbarDrawer)FormatterServices.GetUninitializedObject(type));
}
}
return list.ToArray();
}
}
}