feat: ensure default_contents widgets support merging props with Plug…

…inOperations.Modify

example-plugin-app/src/DefaultIframe.jsx

@@ -6,7 +6,7 @@ import { Plugin } from '@openedx/frontend-plugin-framework';
 function DefaultComponent() {
   return (
     <section className="bg-light p-3 h-100">
-      <h3>Default iFrame Widget</h3>
+      <h4>Default iFrame Widget</h4>
       <p>
         This is a component that lives in the example-plugins-app and is provided in this host MFE via iFrame.
       </p>
@@ -17,7 +17,7 @@ function DefaultComponent() {
 function ErrorFallback(error) {
   return (
     <div className="text-center">
-      <p className="h3 text-muted">
+      <p className="h4 text-muted">
         Oops! An error occurred. Please refresh the screen to try again.
       </p>
       <br />

example-plugin-app/src/PluginIframe.jsx

@@ -5,7 +5,7 @@ export default function PluginIframe() {
   return (
     <Plugin>
       <section className="bg-light p-3 h-100">
-        <h3>Inserted iFrame Plugin</h3>
+        <h4>Inserted iFrame Plugin</h4>
         <p>
           This is a component that lives in the example-plugins-app and is provided in this host MFE via iFrame plugin.
         </p>

example/env.config.jsx

@@ -4,7 +4,6 @@ import {
   IFRAME_PLUGIN,
   PLUGIN_OPERATIONS,
 } from '@openedx/frontend-plugin-framework';
-import DefaultDirectWidget from './src/components/DefaultDirectWidget';
 import PluginDirect from './src/components/PluginDirect';
 import ModularComponent from './src/components/ModularComponent';
 
@@ -18,12 +17,28 @@ const modifyWidget = (widget) => {
   return modifiedWidget;
 };
 
-const wrapWidget = ({ component, idx }) => (
-  <div className="bg-warning" data-testid={`wrapper${idx + 1}`} key={idx}>
-    <p>This is a wrapper component that is placed around the default content.</p>
+const modifyWidgetDefaultContents = (widget) => {
+  const newContent = {
+    'data-custom-attr': 'customValue',
+    'data-another-custom-attr': '',
+    className: 'font-weight-bold',
+    style: { color: 'blue' },
+    onClick: () => { console.log('hello!'); },
+  };
+  widget.content = newContent;
+  return widget;
+};
+
+const wrapWidget = ({ component }) => (
+  <div className="bg-warning" data-testid="wrapper">
+    <div className="px-3">
+      <p className="mb-0">This is a wrapper component that is placed around the default content.</p>
+    </div>
     {component}
-    <p>With this wrapper, you can add anything before or after a component.</p>
-    <p>Note in the JS config that an iFrame plugin was Inserted, but a Hide operation was also used to hide it!</p>
+    <div className="px-3">
+      <p>With this wrapper, you can add anything before or after a component.</p>
+      <p className="mb-0">Note in the JS config that an iFrame plugin was Inserted, but a Hide operation was also used to hide it!</p>
+    </div>
   </div>
 );
 
@@ -179,7 +194,17 @@ const config = {
           },
         },
       ],
-    }
+    },
+    slot_with_username_pii: {
+      keepDefault: true,
+      plugins: [
+        {
+          op: PLUGIN_OPERATIONS.Modify,
+          widgetId: 'default_contents',
+          fn: modifyWidgetDefaultContents,
+        },
+      ],
+    },
   },
 };
 

example/package.json

@@ -12,6 +12,7 @@
   "author": "edX",
   "license": "AAGPL-3.0",
   "dependencies": {
+    "classnames": "^2.5.1",
     "core-js": "^3.29.1",
     "prop-types": "^15.8.1",
     "react": "^17.0.0",

example/src/ExamplePage.jsx

@@ -1,31 +1,74 @@
-import React from 'react';
+import {
+  Container, Row, Col, Stack,
+} from '@openedx/paragon';
 
+import PluginSlotWithModifyDefaultContents from './pluginSlots/PluginSlotWithModifyDefaultContents';
 import PluginSlotWithInsert from './pluginSlots/PluginSlotWithInsert';
 import PluginSlotWithModifyWrapHide from './pluginSlots/PluginSlotWithModifyWrapHide';
 import PluginSlotWithModularPlugins from './pluginSlots/PluginSlotWithModularPlugins';
 import PluginSlotWithoutDefault from './pluginSlots/PluginSlotWithoutDefault';
 
+const pluginExamples = [
+  {
+    id: 'plugin-operation-insert',
+    label: 'Plugin Operation: Insert',
+    Component: PluginSlotWithInsert,
+  },
+  {
+    id: 'plugin-operation-modify-wrap-hide',
+    label: 'Plugin Operation: Modify, Wrap, and Hide',
+    Component: PluginSlotWithModifyWrapHide,
+  },
+  {
+    id: 'plugin-operation-modify-default-content',
+    label: 'Plugin Operation: Modify Default Content',
+    Component: PluginSlotWithModifyDefaultContents,
+  },
+  {
+    id: 'direct-plugins-modular-components',
+    label: 'Direct Plugins Using Modular Components',
+    Component: PluginSlotWithModularPlugins,
+  },
+  {
+    id: 'no-default-content',
+    label: 'Default Content Set to False',
+    Component: PluginSlotWithoutDefault,
+  },
+];
+
 export default function ExamplePage() {
   return (
-    <main className="center m-5">
-      <h1>Plugins Page</h1>
-
-      <p>
-        This page is here to help test the plugins module.  A plugin configuration can be added in
-        index.jsx and this page will display that plugin.
-      </p>
-      <p>
-        To do this, a plugin MFE must be running on some other port.
-        To make it a more realistic test, you may also want to edit your
-        /etc/hosts file (or your system&apos;s equivalent) to provide an alternate domain for
-        127.0.0.1 at which you can load the plugin.
-      </p>
-      <div className="d-flex flex-column">
-        <PluginSlotWithInsert />
-        <PluginSlotWithModifyWrapHide />
-        <PluginSlotWithModularPlugins />
-        <PluginSlotWithoutDefault />
-      </div>
+    <main>
+      <Container size="lg" className="py-3">
+        <Row>
+          <Col>
+            <h1>Plugins Page</h1>
+            <p>
+              This page is here to help test the plugins module.  A plugin configuration can be added in
+              index.jsx and this page will display that plugin.
+            </p>
+            <p>
+              To do this, a plugin MFE must be running on some other port.
+              To make it a more realistic test, you may also want to edit your
+              /etc/hosts file (or your system&apos;s equivalent) to provide an alternate domain for
+              127.0.0.1 at which you can load the plugin.
+            </p>
+            <h2>Examples</h2>
+            <Stack gap={3}>
+              <ul>
+                {pluginExamples.map(({ id, label }) => (
+                  <li key={id}>
+                    <a href={`#${id}`}>{label}</a>
+                  </li>
+                ))}
+              </ul>
+              <Stack gap={5}>
+                {pluginExamples.map(({ id, label, Component }) => <Component key={id} label={label} />)}
+              </Stack>
+            </Stack>
+          </Col>
+        </Row>
+      </Container>
     </main>
   );
 }

example/src/components/DefaultDirectWidget.jsx

@@ -3,7 +3,7 @@ import React from 'react';
 export default function DefaultDirectWidget() {
   return (
     <section className="bg-success p-3 text-light">
-      <h3>Default Direct Widget</h3>
+      <h4>Default Direct Widget</h4>
       <p>
         This widget is a default component that lives in the example app and is directly inserted via JS configuration.
         Note that this default widget appears after the Inserted Direct Plugin. This is because this component&apos;s

example/src/components/ModularComponent.jsx

@@ -4,7 +4,7 @@ import PropTypes from 'prop-types';
 export default function ModularComponent({ content }) {
   return (
     <section className="bg-light p-3">
-      <h3>{ content.title }</h3>
+      <h4>{content.title}</h4>
       <p>
         This is a modular component that lives in the example app.
       </p>

example/src/components/PluginDirect.jsx

@@ -3,7 +3,7 @@ import React from 'react';
 export default function PluginDirect() {
   return (
     <section className="bg-warning p-3">
-      <h3>Inserted Direct Plugin</h3>
+      <h4>Inserted Direct Plugin</h4>
       <p>
         This plugin is a component that lives in the example app and is directly inserted via JS configuration.
         What makes this unique is that it isn&apos;t part of the default content defined for this slot, but is instead

example/src/pluginSlots/PluginSlotWithInsert.jsx

@@ -2,15 +2,15 @@ import React from 'react';
 
 import { PluginSlot } from '@openedx/frontend-plugin-framework';
 
-function PluginSlotWithInsert() {
+function PluginSlotWithInsert({ label }) {
   return (
     <div className="border border-primary mb-2">
-      <h2 className="pl-3">Plugin Operation: Insert</h2>
+      <h3 id="plugin-operation-insert" className="pl-3">{label}</h3>
       <PluginSlot
         id="slot_with_insert_operation"
       >
         <section className="bg-success p-3 text-light">
-          <h3>Default Content</h3>
+          <h4>Default Content</h4>
           <p>
             This widget represents a component that is wrapped by the Plugin Slot.
 

example/src/pluginSlots/PluginSlotWithModifyDefaultContents.jsx

@@ -0,0 +1,46 @@
+import React from 'react';
+
+import { PluginSlot } from '@openedx/frontend-plugin-framework';
+import classNames from 'classnames';
+
+
+// Example component used as the default child(ren) within a PluginSlot
+const Username = ({ className, ...rest }) => {
+  const authenticatedUser = { username: 'testuser' };
+  const { username } = authenticatedUser;
+  return (
+    <span
+      className={classNames('default-classname', className)} 
+      {...rest}
+    >
+      {username}
+    </span>
+  );
+};
+
+function PluginSlotWithModifyDefaultContents({ label }) {
+  return (
+    <div className="border border-primary mb-2 px-3">
+      <h3 id="plugin-operation-modify-default-content">{label}</h3>
+      <p>
+        The following <code>PluginSlot</code> examples demonstrate the <code>PLUGIN_OPERATIONS.Modify</code> operation, when
+        the <code>widgetId</code> is <code>default_contents</code>. Any configured, custom plugin <code>content</code> is
+        merged with any existing props passed to the component(s) represented by <code>default_contents</code>.
+      </p>
+      <ul>
+        <li>Custom <code>className</code> overrides are concatenated with the <code>className</code> prop passed to the <code>default_contents</code> component(s), if any.</li>
+        <li>Custom <code>style</code> overrides are shallow merged with the <code>style</code> prop passed to the <code>default_contents</code> component(s), if any.</li>
+        <li>Custom event handlers (e.g., <code>onClick</code>) are executed in sequence, after any event handlers passed to the <code>default_contents</code> component(s), if any.</li>
+      </ul>
+      <PluginSlot id="slot_with_username_pii" as="div">
+        <Username className="d-block" />
+        <Username className="abc123" />
+      </PluginSlot>
+      <PluginSlot id="slot_with_username_pii" as="div">
+        <Username className="def456" />
+      </PluginSlot>
+    </div>
+  );
+}
+
+export default PluginSlotWithModifyDefaultContents;

example/src/pluginSlots/PluginSlotWithModifyWrapHide.jsx

@@ -4,15 +4,15 @@ import { PluginSlot } from '@openedx/frontend-plugin-framework';
 import ModularComponent from '../components/ModularComponent';
 
 
-function PluginSlotWithModifyWrapHide() {
+function PluginSlotWithModifyWrapHide({ label }) {
   const content = {
     title: 'Default Content',
     uniqueText:  "Because this modular component is default content, this text is passed in as a prop within PluginSlot."
   }
 
   return (
     <div className="border border-primary mb-2">
-      <h2 className="pl-3">Plugin Operation: Modify, Wrap, and Hide</h2>
+      <h3 id="plugin-operation-modify-wrap-hide" className="pl-3">{label}</h3>
       <PluginSlot
         id="slot_with_modify_wrap_hidden_operations"
       >

example/src/pluginSlots/PluginSlotWithModularPlugins.jsx

@@ -3,15 +3,15 @@ import React from 'react';
 import { PluginSlot } from '@openedx/frontend-plugin-framework';
 import ModularComponent from '../components/ModularComponent';
 
-function PluginSlotWithModularPlugins() {
+function PluginSlotWithModularPlugins({ label }) {
   const content = {
     title: 'Default Content',
     uniqueText: 'Default content are set with a priority of 50, which is why it appears second in this slot.',
   }
 
   return (
     <div className="border border-primary mb-2">
-      <h2 className="pl-3">Direct Plugins Using Modular Components</h2>
+      <h3 id="direct-plugins-modular-components" className="pl-3">{label}</h3>
       <PluginSlot
         id="slot_with_modular_plugins"
       >

example/src/pluginSlots/PluginSlotWithoutDefault.jsx

@@ -2,10 +2,10 @@ import React from 'react';
 
 import { PluginSlot } from '@openedx/frontend-plugin-framework';
 
-function PluginSlotWithoutDefault() {
+function PluginSlotWithoutDefault({ label }) {
   return (
     <div className="border border-primary mb-2">
-      <h2 className="pl-3">Default Content Set to False</h2>
+      <h3 id="no-default-content" className="pl-3">{label}</h3>
       <PluginSlot
         id="slot_without_default"
       >