Add dummy preference descriptions to open AI config widget

packages/ai-ide/src/browser/workspace-preferences.ts

@@ -38,6 +38,27 @@ export const WorkspacePreferencesSchema: PreferenceSchema = {
             items: {
                 type: 'string'
             }
-        }
+        },
+        'ai-features.agents.details': {
+            type: 'null',
+            markdownDescription: nls.localize('theia/ai/ide/agent-description',
+                'Additional settings for AI agents can be configured using the [AI Configuration View]({0}).',
+                'command:aiConfiguration:open'
+            )
+        },
+        'ai-features.promptTemplates.details': {
+            type: 'null',
+            markdownDescription: nls.localize('theia/ai/ide/prompt-template-description',
+                'Additional AI prompt template settings can be configured using the [AI Configuration View]({0}).',
+                'command:aiConfiguration:open'
+            )
+        },
+        'ai-features.models.details': {
+            type: 'null',
+            markdownDescription: nls.localize('theia/ai/ide/prompt-template-description',
+                'Additional settings for AI models can be configured using the [AI Configuration View]({0}).',
+                'command:aiConfiguration:open'
+            )
+        },
     }
 };

packages/preferences/src/browser/views/components/preference-null-input.ts

@@ -0,0 +1,52 @@
+// *****************************************************************************
+// Copyright (C) 2025 Eclipse GmbH and others.
+//
+// This program and the accompanying materials are made available under the
+// terms of the Eclipse Public License v. 2.0 which is available at
+// http://www.eclipse.org/legal/epl-2.0.
+//
+// This Source Code may also be made available under the following Secondary
+// Licenses when the conditions for such availability set forth in the Eclipse
+// Public License v. 2.0 are satisfied: GNU General Public License, version 2
+// with the GNU Classpath Exception which is available at
+// https://www.gnu.org/software/classpath/license.html.
+//
+// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0
+// *****************************************************************************
+
+import { injectable, interfaces } from '@theia/core/shared/inversify';
+import { PreferenceLeafNodeRenderer, PreferenceNodeRenderer } from './preference-node-renderer';
+import { Preference } from '../../util/preference-types';
+import { PreferenceLeafNodeRendererContribution } from './preference-node-renderer-creator';
+
+@injectable()
+/** For rendering preference items for which the only interesting feature is the description */
+export class PreferenceNullInputRenderer extends PreferenceLeafNodeRenderer<null, HTMLElement> {
+    protected override createInteractable(container: HTMLElement): void {
+        const span = document.createElement('span');
+        this.interactable = span;
+        container.appendChild(span);
+    }
+
+    protected override getFallbackValue(): null {
+        // eslint-disable-next-line no-null/no-null
+        return null;
+    }
+
+    protected override doHandleValueChange(): void { }
+}
+
+@injectable()
+export class PreferenceNullRendererContribution extends PreferenceLeafNodeRendererContribution {
+    static ID = 'preference-null-renderer';
+    id = PreferenceNullRendererContribution.ID;
+
+    canHandleLeafNode(node: Preference.LeafNode): number {
+        const isOnlyNull = node.preference.data.type === 'null' || Array.isArray(node.preference.data.type) && node.preference.data.type.every(candidate => candidate === 'null');
+        return isOnlyNull ? 5 : 0;
+    }
+
+    createLeafNodeRenderer(container: interfaces.Container): PreferenceNodeRenderer {
+        return container.get(PreferenceNullInputRenderer);
+    }
+}

packages/preferences/src/browser/views/preference-widget-bindings.ts

@@ -36,6 +36,7 @@ import { PreferencesScopeTabBar } from './preference-scope-tabbar-widget';
 import { PreferencesSearchbarWidget } from './preference-searchbar-widget';
 import { PreferencesTreeWidget } from './preference-tree-widget';
 import { PreferencesWidget } from './preference-widget';
+import { PreferenceNullInputRenderer, PreferenceNullRendererContribution } from './components/preference-null-input';
 
 export function bindPreferencesWidgets(bind: interfaces.Bind): void {
     bind(PreferenceTreeLabelProvider).toSelf().inSingletonScope();
@@ -58,6 +59,8 @@ export function bindPreferencesWidgets(bind: interfaces.Bind): void {
 
     bind(PreferenceStringInputRenderer).toSelf();
     bind(PreferenceNodeRendererContribution).to(PreferenceStringInputRendererContribution).inSingletonScope();
+    bind(PreferenceNullInputRenderer).toSelf();
+    bind(PreferenceNodeRendererContribution).to(PreferenceNullRendererContribution).inSingletonScope();
 
     bind(PreferenceBooleanInputRenderer).toSelf();
     bind(PreferenceNodeRendererContribution).to(PreferenceBooleanInputRendererContribution).inSingletonScope();