skip-bump: Load Stylesheet manually for 2019.4

Editor/UI Toolkit/Layouts/ReferenceViewer.uxml

@@ -1,7 +1,7 @@
 <ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" xsi="http://www.w3.org/2001/XMLSchema-instance" engine="UnityEngine.UIElements" editor="UnityEditor.UIElements" noNamespaceSchemaLocation="../../../../UIElementsSchema/UIElements.xsd" editor-extension-mode="True">
-    <Style src="project://database/Packages/com.calci.assetlens/Editor/UI%20Toolkit/Stylesheets/ReferenceViewer.uss?fileID=7433441132597879392&amp;guid=3638da1b0ab74674b9b4a67d928927af&amp;type=3#ReferenceViewer" />
-    <Style src="project://database/Packages/com.calci.assetlens/Editor/UI%20Toolkit/Components/SwitchToggle.uss?fileID=7433441132597879392&amp;guid=7c390d666cc3d3b40a39b9b26febbbd2&amp;type=3#SwitchToggle" />
-    <Style src="project://database/Packages/com.calci.assetlens/Editor/UI%20Toolkit/Components/TopBar.uss?fileID=7433441132597879392&amp;guid=980ba0d854994fb438f65d175798dbac&amp;type=3#TopBar" />
+<!--    <Style src="project://database/Packages/com.calci.assetlens/Editor/UI%20Toolkit/Stylesheets/ReferenceViewer.uss?fileID=7433441132597879392&amp;guid=3638da1b0ab74674b9b4a67d928927af&amp;type=3#ReferenceViewer" />-->
+<!--    <Style src="project://database/Packages/com.calci.assetlens/Editor/UI%20Toolkit/Components/SwitchToggle.uss?fileID=7433441132597879392&amp;guid=7c390d666cc3d3b40a39b9b26febbbd2&amp;type=3#SwitchToggle" />-->
+<!--    <Style src="project://database/Packages/com.calci.assetlens/Editor/UI%20Toolkit/Components/TopBar.uss?fileID=7433441132597879392&amp;guid=980ba0d854994fb438f65d175798dbac&amp;type=3#TopBar" />-->
     <ui:VisualElement name="root" class="root">
         <ui:VisualElement name="top" style="flex-direction: row;">
             <ui:VisualElement name="ci" style="min-width: 50%; padding-top: 4px; padding-bottom: 4px;">
@@ -14,7 +14,8 @@
         </ui:VisualElement>
         <ui:VisualElement name="selection-container" class="selection-container">
             <uie:ObjectField name="selection-field" label="Selected" allow-scene-objects="false" />
-            <ui:HelpBox name="no-selection-helpbox" text="no-selection-helpbox" message-type="Info" />
+            <ui:VisualElement name="help-box-container"/>
+<!--            <ui:HelpBox name="no-selection-helpbox" text="no-selection-helpbox" message-type="Info" />-->
             <ui:VisualElement name="selection-info" class="dark-container">
                 <ui:Label text="version-info" display-tooltip-when-elided="true" name="version-info" />
                 <ui:Label text="modification-info" display-tooltip-when-elided="true" name="modification-info" />

Editor/UI/EditorWindow/ReferenceViewer.cs

@@ -43,6 +43,15 @@ internal sealed class ReferenceViewer : AssetLensEditorWindow
         protected override void Constructor()
         {
             LoadLayout("ReferenceViewer");
+            LoadStylesheet("ReferenceViewer");
+
+            string path = FileSystem.ComponentDirectory + "TopBar.uss";
+            StyleSheet styleSheet = AssetDatabase.LoadAssetAtPath<StyleSheet>(path);
+            root.styleSheets.Add(styleSheet);
+
+            path = FileSystem.ComponentDirectory + "Header.uss";
+            styleSheet = AssetDatabase.LoadAssetAtPath<StyleSheet>(path);
+            root.styleSheets.Add(styleSheet);
 
             QueryElements();
             InitElements();
@@ -96,7 +105,9 @@ private void QueryElements()
             used_by_label = root.Q<Label>("used-by-label");
 
 #if UNITY_2020_1_OR_NEWER
-            no_selection = root.Q<HelpBox>("no-selection-helpbox");
+            // no_selection = root.Q<HelpBox>("no-selection-helpbox");
+            no_selection = new HelpBox();
+            root.Q<VisualElement>("help-box-container").Add(no_selection);
 #endif
             additional_info = root.Q<VisualElement>("selection-info");