Hide "Model as application" button for Ruby

extensions/ql-vscode/src/model-editor/model-editor-view.ts

@@ -376,6 +376,8 @@ export class ModelEditorView extends AbstractWebview<
     const sourceArchiveAvailable =
       this.databaseItem.hasSourceArchiveInExplorer();
 
+    const showModeSwitchButton = this.language !== QueryLanguage.Ruby;
+
     await this.postMessage({
       t: "setModelEditorViewState",
       viewState: {
@@ -385,6 +387,7 @@ export class ModelEditorView extends AbstractWebview<
         showLlmButton,
         showMultipleModels: this.modelConfig.showMultipleModels,
         mode: this.modelingStore.getMode(this.databaseItem),
+        showModeSwitchButton,
         sourceArchiveAvailable,
       },
     });

extensions/ql-vscode/src/model-editor/shared/view-state.ts

@@ -9,6 +9,7 @@ export interface ModelEditorViewState {
   showLlmButton: boolean;
   showMultipleModels: boolean;
   mode: Mode;
+  showModeSwitchButton: boolean;
   sourceArchiveAvailable: boolean;
 }
 

extensions/ql-vscode/src/view/model-editor/ModelEditor.tsx

@@ -291,12 +291,14 @@ export function ModelEditor({
               <span slot="start" className="codicon codicon-package"></span>
               Open extension pack
             </LinkIconButton>
-            <LinkIconButton onClick={onSwitchModeClick}>
-              <span slot="start" className="codicon codicon-library"></span>
-              {viewState.mode === Mode.Framework
-                ? "Model as application"
-                : "Model as dependency"}
-            </LinkIconButton>
+            {viewState.showModeSwitchButton && (
+              <LinkIconButton onClick={onSwitchModeClick}>
+                <span slot="start" className="codicon codicon-library"></span>
+                {viewState.mode === Mode.Framework
+                  ? "Model as application"
+                  : "Model as dependency"}
+              </LinkIconButton>
+            )}
           </HeaderRow>
         </HeaderColumn>
         <HeaderSpacer />

extensions/ql-vscode/test/factories/model-editor/view-state.ts

@@ -12,6 +12,7 @@ export function createMockModelEditorViewState(
     showFlowGeneration: false,
     showLlmButton: false,
     showMultipleModels: false,
+    showModeSwitchButton: true,
     extensionPack: createMockExtensionPack(),
     sourceArchiveAvailable: true,
     ...data,