feat: provide FooterSlot

This allows consuming MFEs to utilize a standardized Frontend
Plugin Framework `PluginSlot` for replacing the footer.

README.rst

@@ -85,6 +85,7 @@ This library has the following exports:
 * ``(default)``: The footer as a React component.
 * ``messages``: Internationalization messages suitable for use with `@edx/frontend-platform/i18n <https://edx.github.io/frontend-platform/module-Internationalization.html>`_
 * ``dist/footer.scss``: A SASS file which contains style information for the component.  It should be imported into the micro-frontend's own SCSS file.
+* ``FooterSlot``: The footer wrapped in a `Frontend Plugin Framework <https://github.com/openedx/frontend-plugin-framework>`_ ``PluginSlot``.
 
 <Footer /> component props
 ==========================
@@ -93,6 +94,12 @@ This library has the following exports:
   language from its dropdown.
 * supportedLanguages: An array of objects representing available languages.  See example below for object shape.
 
+Plugin
+======
+This package provides a wrapped version of the footer using `Frontend Plugin Framework <https://github.com/openedx/frontend-plugin-framework>`_.
+
+Information on how to utilize the ``FooterSlot`` is available `here </src/components/footer-slot>`_.
+
 Examples
 ========
 
@@ -113,6 +120,8 @@ Component Usage Example::
 * `An example of minimal component and messages usage. <https://github.com/openedx/frontend-template-application/blob/3355bb3a96232390e9056f35b06ffa8f105ed7ca/src/index.jsx#L23>`_
 * `An example of SCSS file usage. <https://github.com/openedx/frontend-template-application/blob/3cd5485bf387b8c479baf6b02bf59e3061dc3465/src/index.scss#L9>`_
 
+
+
 Development
 ===========
 

package.json

@@ -39,6 +39,7 @@
     "@edx/frontend-platform": "8.0.1",
     "@edx/reactifex": "^2.1.1",
     "@openedx/frontend-build": "14.0.3",
+    "@openedx/frontend-plugin-framework": "^1.1.2",
     "@openedx/paragon": "22.3.2",
     "@testing-library/jest-dom": "^5.16.4",
     "@testing-library/react": "^12.1.1",
@@ -64,9 +65,15 @@
   },
   "peerDependencies": {
     "@edx/frontend-platform": "^7.0.0 || ^8.0.0",
+    "@openedx/frontend-plugin-framework": "^1.1.2",
     "@openedx/paragon": ">= 21.11.3 < 23.0.0",
     "prop-types": "^15.5.10",
     "react": "^16.9.0 || ^17.0.0",
     "react-dom": "^16.9.0 || ^17.0.0"
+  },
+  "peerDependenciesMeta": {
+    "@openedx/frontend-plugin-framework": {
+      "optional": true
+    }
   }
 }

src/components/footer-slot/README.md

@@ -0,0 +1,48 @@
+# Footer Slot
+
+### Slot ID: `footer_slot`
+
+## Description
+
+This slot is used to replace/modify/hide the footer.
+
+## Example
+
+The following `env.config.jsx` will replace the default footer.
+
+![Screenshot of Default Footer](./images/default_footer.png)
+
+with a simple custom footer
+
+![Screenshot of Custom Footer](./images/custom_footer.png)
+
+```js
+import { DIRECT_PLUGIN, PLUGIN_OPERATIONS } from '@openedx/frontend-plugin-framework';
+
+const config = {
+  pluginSlots: {
+    footer_slot: {
+      plugins: [
+        {
+          // Hide the default footer
+          op: PLUGIN_OPERATIONS.Hide,
+          widgetId: 'default_contents',
+        },
+        {
+          // Insert a custom footer
+          op: PLUGIN_OPERATIONS.Insert,
+          widget: {
+            id: 'custom_footer',
+            type: DIRECT_PLUGIN,
+            RenderWidget: () => (
+              <h1 style={{textAlign: 'center'}}>🦶</h1>
+            ),
+          },
+        },
+      ]
+    }
+  },
+}
+
+export default config;
+```

src/components/footer-slot/index.jsx

@@ -0,0 +1,11 @@
+import React from 'react';
+import { PluginSlot } from '@openedx/frontend-plugin-framework';
+import Footer from '../Footer';
+
+const FooterSlot = () => (
+  <PluginSlot id="footer_slot">
+    <Footer />
+  </PluginSlot>
+);
+
+export default FooterSlot;

src/index.js

@@ -1,6 +1,9 @@
 import Footer, { EVENT_NAMES } from './components/Footer';
 import messages from './i18n/index';
 import StudioFooter from './components/studio-footer';
+import FooterSlot from './components/footer-slot';
 
 export default Footer;
-export { messages, EVENT_NAMES, StudioFooter };
+export {
+  messages, EVENT_NAMES, StudioFooter, FooterSlot,
+};