feat(script/jsx): add support for React hooks

apps/client/src/layouts/desktop_layout.tsx

@@ -184,7 +184,7 @@ export default class DesktopLayout {
                                             .child(new HighlightsListWidget())
                                             .child(...this.customWidgets.get("right-pane"))
                                     )
-                                    .optChild(isNewLayout, <RightPanelContainer customWidgets={this.customWidgets.get("right-pane")} />)
+                                    .optChild(isNewLayout, <RightPanelContainer widgetsByParent={this.customWidgets} />)
                             )
                             .optChild(!launcherPaneIsHorizontal && isNewLayout, <StatusBar />)
                     )

apps/client/src/services/bundle.ts

@@ -5,7 +5,6 @@ import type { Entity, WidgetDefinition } from "./frontend_script_api.js";
 import { t } from "./i18n.js";
 import ScriptContext from "./script_context.js";
 import server from "./server.js";
-import toast from "./toast.js";
 import toastService from "./toast.js";
 import utils, { getErrorMessage } from "./utils.js";
 
@@ -66,51 +65,45 @@ async function executeStartupBundles() {
 }
 
 export class WidgetsByParent {
-    private byParent: Record<string, Widget[]>;
+    private legacyWidgets: Record<string, LegacyWidget[]>;
+    private preactWidgets: Record<string, WidgetDefinition[]>;
 
     constructor() {
-        this.byParent = {};
+        this.legacyWidgets = {};
+        this.preactWidgets = {};
     }
 
     add(widget: Widget) {
         if ("type" in widget && widget.type === "react-widget") {
             // React-based script.
             const reactWidget = widget as WidgetDefinition;
-            this.byParent[reactWidget.parent] = this.byParent[reactWidget.parent] || [];
+            this.preactWidgets[reactWidget.parent] = this.preactWidgets[reactWidget.parent] || [];
-            this.byParent[reactWidget.parent].push(widget);
+            this.preactWidgets[reactWidget.parent].push(reactWidget);
         } else if ("parentWidget" in widget && widget.parentWidget) {
-            this.byParent[widget.parentWidget] = this.byParent[widget.parentWidget] || [];
+            this.legacyWidgets[widget.parentWidget] = this.legacyWidgets[widget.parentWidget] || [];
-            this.byParent[widget.parentWidget].push(widget);
+            this.legacyWidgets[widget.parentWidget].push(widget);
         } else {
             console.log(`Custom widget does not have mandatory 'parentWidget' property defined`);
         }
     }
 
     get(parentName: string) {
-        if (!this.byParent[parentName]) {
+        if (!this.legacyWidgets[parentName]) {
             return [];
         }
 
         return (
-            this.byParent[parentName]
+            this.legacyWidgets[parentName]
                 // previously, custom widgets were provided as a single instance, but that has the disadvantage
                 // for splits where we actually need multiple instaces and thus having a class to instantiate is better
                 // https://github.com/zadam/trilium/issues/4274
-                .map((w: any) => {
+                .map((w: any) => (w.prototype ? new w() : w))
-                    if ("type" in w && w.type === "react-widget") {
-                        try {
-                            return w.render();
-                        } catch (e: unknown) {
-                            toast.showErrorTitleAndMessage(t("toast.widget-render-error.title"), getErrorMessage(e));
-                            return null;
-                        }
-                    }
-
-                    return (w.prototype ? new w() : w);
-                })
-                .filter(Boolean)
         );
     }
+
+    getPreactWidgets(parentName: string) {
+        return this.preactWidgets[parentName] ?? [];
+    }
 }
 
 async function getWidgetBundlesByParent() {

apps/client/src/services/frontend_script_api_preact.ts

@@ -1,7 +1,10 @@
 import { Fragment, h } from "preact";
+import * as hooks from "preact/hooks";
 
 export const preactAPI = Object.freeze({
     // Core
     h,
-    Fragment
+    Fragment,
+
+    ...hooks
 });

apps/client/src/widgets/sidebar/RightPanelContainer.tsx

@@ -6,7 +6,7 @@ import { isValidElement, VNode } from "preact";
 import { useEffect, useRef } from "preact/hooks";
 
 import appContext from "../../components/app_context";
-import { Widget } from "../../services/bundle";
+import { WidgetsByParent } from "../../services/bundle";
 import { t } from "../../services/i18n";
 import options from "../../services/options";
 import { DEFAULT_GUTTER_SIZE } from "../../services/resizer";
@@ -27,9 +27,9 @@ interface RightPanelWidgetDefinition {
     position: number;
 }
 
-export default function RightPanelContainer({ customWidgets }: { customWidgets: BasicWidget[] }) {
+export default function RightPanelContainer({ widgetsByParent }: { widgetsByParent: WidgetsByParent }) {
     const [ rightPaneVisible, setRightPaneVisible ] = useTriliumOptionBool("rightPaneVisible");
-    const items = useItems(rightPaneVisible, customWidgets);
+    const items = useItems(rightPaneVisible, widgetsByParent);
     useSplit(rightPaneVisible);
 
     return (
@@ -52,7 +52,7 @@ export default function RightPanelContainer({ customWidgets }: { customWidgets:
     );
 }
 
-function useItems(rightPaneVisible: boolean, customWidgets: Widget[]) {
+function useItems(rightPaneVisible: boolean, widgetsByParent: WidgetsByParent) {
     const { note } = useActiveNoteContext();
     const noteType = useNoteProperty(note, "type");
     const [ highlightsList ] = useTriliumOptionJson<string[]>("highlightsList");
@@ -69,11 +69,18 @@ function useItems(rightPaneVisible: boolean, customWidgets: Widget[]) {
             enabled: noteType === "text" && highlightsList.length > 0,
             position: 20,
         },
-        ...customWidgets.map((w, i) => ({
+        ...widgetsByParent.get("right-pane").map((widget, i) => ({
-            el: isValidElement(w) ? w : <CustomLegacyWidget key={w._noteId} originalWidget={w as LegacyRightPanelWidget} />,
+            el: <CustomLegacyWidget key={widget._noteId} originalWidget={widget as LegacyRightPanelWidget} />,
             enabled: true,
-            position: w.position ?? 30 + i * 10
+            position: widget.position ?? 30 + i * 10
-        }))
+        })),
+        ...widgetsByParent.getPreactWidgets("right-pane").map((widget) => {
+            const El = widget.render;
+            return {
+                el: <El />,
+                enabled: true
+            };
+        })
     ];
 
     return definitions