Introduce PluginRenderer to render plugins

Summary: PluginContainer will now wrap Sandy plugins in PluginRenderer. PluginRenderer will also be used by plugin unit tests in the future

Reviewed By: jknoxville

Differential Revision: D22159359

fbshipit-source-id: 69f9c8f4bec9392022c1d7a14957f5aca0339d97

desktop/app/src/PluginContainer.tsx

@@ -47,6 +47,7 @@ import {Message} from './reducers/pluginMessageQueue';
 import {Idler} from './utils/Idler';
 import {processMessageQueue} from './utils/messageQueue';
 import {ToggleButton, SmallText} from './ui';
+import {SandyPluginRenderer} from 'flipper-plugin';
 
 const Container = styled(FlexColumn)({
   width: 0,
@@ -332,10 +333,21 @@ class PluginContainer extends PureComponent<Props, State> {
       console.warn(`No selected plugin. Rendering empty!`);
       return null;
     }
+    let pluginElement: null | React.ReactElement<any>;
     if (isSandyPlugin(activePlugin)) {
-      // TODO:
-      return null;
+      if (target instanceof Client) {
+        // Make sure we throw away the container for different pluginKey!
+        pluginElement = (
+          <SandyPluginRenderer
+            key={pluginKey}
+            plugin={target.sandyPluginStates.get(activePlugin.id)!}
+          />
+        );
+      } else {
+        // TODO: target might be a device as well, support that T68738317
+        pluginElement = null;
       }
+    } else {
       const props: PluginProps<Object> & {
         key: string;
         ref: (
@@ -349,14 +361,14 @@ class PluginContainer extends PureComponent<Props, State> {
         key: pluginKey,
         logger: this.props.logger,
         selectedApp,
-      settingsState,
         persistedState: activePlugin.defaultPersistedState
           ? {
               ...activePlugin.defaultPersistedState,
               ...pluginState,
             }
           : pluginState,
-      setStaticView: (payload: StaticView) => this.props.setStaticView(payload),
+        setStaticView: (payload: StaticView) =>
+          this.props.setStaticView(payload),
         setPersistedState: (state) => setPluginState({pluginKey, state}),
         target,
         deepLinkPayload: this.props.deepLinkPayload,
@@ -367,10 +379,16 @@ class PluginContainer extends PureComponent<Props, State> {
             target instanceof Client &&
             target.plugins.some((p) => p === pluginID)
           ) {
-          this.props.selectPlugin({selectedPlugin: pluginID, deepLinkPayload});
+            this.props.selectPlugin({
+              selectedPlugin: pluginID,
+              deepLinkPayload,
+            });
             return true;
           } else if (target instanceof BaseDevice) {
-          this.props.selectPlugin({selectedPlugin: pluginID, deepLinkPayload});
+            this.props.selectPlugin({
+              selectedPlugin: pluginID,
+              deepLinkPayload,
+            });
             return true;
           } else {
             return false;
@@ -378,7 +396,10 @@ class PluginContainer extends PureComponent<Props, State> {
         },
         ref: this.refChanged,
         isArchivedDevice,
+        settingsState,
       };
+      pluginElement = React.createElement(activePlugin, props);
+    }
     return (
       <React.Fragment>
         <Container key="plugin">
@@ -386,7 +407,7 @@ class PluginContainer extends PureComponent<Props, State> {
             heading={`Plugin "${
               activePlugin.title || 'Unknown'
             }" encountered an error during render`}>
-            {React.createElement(activePlugin, props)}
+            {pluginElement}
           </ErrorBoundary>
         </Container>
         <SidebarContainer id="detailsSidebar" />

desktop/app/src/__tests__/PluginContainer.node.tsx

@@ -7,10 +7,14 @@
  * @format
  */
 
-import React from 'react';
+import React, {useContext} from 'react';
 import produce from 'immer';
 import {FlipperPlugin} from '../plugin';
-import {renderMockFlipperWithPlugin} from '../test-utils/createMockFlipperWithPlugin';
+import {
+  renderMockFlipperWithPlugin,
+  createMockPluginDetails,
+} from '../test-utils/createMockFlipperWithPlugin';
+import {SandyPluginContext, SandyPluginDefinition} from 'flipper-plugin';
 
 interface PersistedState {
   count: 1;
@@ -79,3 +83,55 @@ test('Plugin container can render plugin and receive updates', async () => {
 
   expect((await renderer.findByTestId('counter')).textContent).toBe('2');
 });
+
+test('PluginContainer can render Sandy plugins', async () => {
+  let renders = 0;
+
+  function MySandyPlugin() {
+    renders++;
+    const sandyContext = useContext(SandyPluginContext);
+    expect(sandyContext).not.toBe(null);
+    return <div>Hello from Sandy</div>;
+  }
+
+  const plugin = () => ({});
+
+  const definition = new SandyPluginDefinition(createMockPluginDetails(), {
+    plugin,
+    Component: MySandyPlugin,
+  });
+  // any cast because this plugin is not enriched with the meta data that the plugin loader
+  // normally adds. Our further sandy plugin test infra won't need this, but
+  // for this test we do need to act a s a loaded plugin, to make sure PluginContainer itself can handle it
+  const {renderer, act, sendMessage} = await renderMockFlipperWithPlugin(
+    definition,
+  );
+  expect(renderer.baseElement).toMatchInlineSnapshot(`
+        <body>
+          <div>
+            <div
+              class="css-1orvm1g-View-FlexBox-FlexColumn"
+            >
+              <div>
+                Hello from Sandy
+              </div>
+            </div>
+            <div
+              class="css-bxcvv9-View-FlexBox-FlexRow"
+              id="detailsSidebar"
+            />
+          </div>
+        </body>
+      `);
+  expect(renders).toBe(1);
+
+  // sending a new message doesn't cause a re-render
+  act(() => {
+    sendMessage('inc', {delta: 2});
+  });
+
+  // TODO: check that onConnect is called T68683507
+  // TODO: check that messages have arrived T68683442
+
+  expect(renders).toBe(1);
+});

desktop/app/src/reducers/__tests__/sandyplugins.node.tsx

@@ -7,7 +7,10 @@
  * @format
  */
 
-import {createMockFlipperWithPlugin} from '../../test-utils/createMockFlipperWithPlugin';
+import {
+  createMockFlipperWithPlugin,
+  createMockPluginDetails,
+} from '../../test-utils/createMockFlipperWithPlugin';
 import {Store, Client} from '../../';
 import {selectPlugin, starPlugin} from '../../reducers/connections';
 import {registerPlugins} from '../../reducers/plugins';
@@ -21,18 +24,7 @@ interface PersistedState {
   count: 1;
 }
 
-const pluginDetails = {
-  id: 'TestPlugin',
-  dir: '',
-  name: 'TestPlugin',
-  specVersion: 0,
-  entry: '',
-  isDefault: false,
-  main: '',
-  source: '',
-  title: 'Testing Plugin',
-  version: '',
-} as const;
+const pluginDetails = createMockPluginDetails();
 
 let TestPlugin: SandyPluginDefinition;
 
@@ -114,11 +106,10 @@ test('it should not initialize a sandy plugin if not enabled', async () => {
   const {client, store} = await createMockFlipperWithPlugin(TestPlugin);
 
   const Plugin2 = new SandyPluginDefinition(
-    {
-      ...pluginDetails,
+    createMockPluginDetails({
       name: 'Plugin2',
       id: 'Plugin2',
-    },
+    }),
     {
       plugin: jest.fn().mockImplementation((client) => {
         const destroyStub = jest.fn();

desktop/app/src/test-utils/createMockFlipperWithPlugin.tsx

@@ -29,11 +29,12 @@ import Client, {ClientQuery} from '../Client';
 
 import {buildClientId} from '../utils/clientUtils';
 import {Logger} from '../fb-interfaces/Logger';
-import {FlipperPlugin, PluginDefinition} from '../plugin';
+import {PluginDefinition} from '../plugin';
 import {registerPlugins} from '../reducers/plugins';
 import PluginContainer from '../PluginContainer';
 import {getPluginKey} from '../utils/pluginUtils';
 import {getInstance} from '../fb-stubs/Logger';
+import {PluginDetails} from 'flipper-plugin-lib';
 
 type MockFlipperResult = {
   client: Client;
@@ -182,7 +183,7 @@ export async function createMockFlipperWithPlugin(
 type Renderer = RenderResult<typeof import('testing-library__dom/queries')>;
 
 export async function renderMockFlipperWithPlugin(
-  pluginClazz: typeof FlipperPlugin,
+  pluginClazz: PluginDefinition,
 ): Promise<
   MockFlipperResult & {
     renderer: Renderer;
@@ -219,3 +220,21 @@ export async function renderMockFlipperWithPlugin(
     },
   };
 }
+
+export function createMockPluginDetails(
+  details?: Partial<PluginDetails>,
+): PluginDetails {
+  return {
+    id: 'TestPlugin',
+    dir: '',
+    name: 'TestPlugin',
+    specVersion: 0,
+    entry: '',
+    isDefault: false,
+    main: '',
+    source: '',
+    title: 'Testing Plugin',
+    version: '',
+    ...details,
+  };
+}

desktop/flipper-plugin/src/index.ts

@@ -9,3 +9,5 @@
 
 export * from './plugin/Plugin';
 export * from './plugin/SandyPluginDefinition';
+export * from './plugin/PluginRenderer';
+export * from './plugin/PluginContext';

desktop/flipper-plugin/src/plugin/PluginContext.tsx

@@ -0,0 +1,23 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import {createContext} from 'react';
+
+export type SandyPluginContext = {
+  deactivate(): void;
+};
+
+// TODO: to be filled in later with testing and such
+const stubPluginContext: SandyPluginContext = {
+  deactivate() {},
+};
+
+export const SandyPluginContext = createContext<SandyPluginContext>(
+  stubPluginContext,
+);

desktop/flipper-plugin/src/plugin/PluginRenderer.tsx

@@ -0,0 +1,38 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import React, {memo, useEffect, createElement} from 'react';
+import {SandyPluginContext} from './PluginContext';
+import {SandyPluginInstance} from './Plugin';
+
+type Props = {
+  plugin: SandyPluginInstance;
+};
+
+/**
+ * Component to render a Sandy plugin container
+ */
+export const SandyPluginRenderer = memo(
+  ({plugin}: Props) => {
+    useEffect(() => {
+      plugin.deactivate();
+    }, [plugin]);
+
+    return (
+      <SandyPluginContext.Provider value={plugin}>
+        {createElement(plugin.definition.module.Component)}
+      </SandyPluginContext.Provider>
+    );
+  },
+  () => {
+    // One of the goals of the ModernPluginContainer is that we want to prevent it from rendering
+    // for any outside change. Whatever happens outside of us, we don't care. If it is relevant for use, we take care about it from the insde
+    return true;
+  },
+);