Add store state to hold content information banner data

src/sidebar/store/modules/test/viewer-test.js

@@ -26,4 +26,16 @@ describe('store/modules/viewer', () => {
       assert.isTrue(store.hasSidebarOpened());
     });
   });
+
+  describe('getContentInfo', () => {
+    it('returns data for content info banner', () => {
+      const contentInfo = {
+        logo: {},
+        item: { title: 'Some article' },
+        links: {},
+      };
+      store.setContentInfo(contentInfo);
+      assert.deepEqual(store.getContentInfo(), contentInfo);
+    });
+  });
 });

src/sidebar/store/modules/viewer.js

 import { createStoreModule, makeAction } from '../create-store';
 
+/**
+ * @typedef {import('../../../types/annotator').ContentInfoConfig} ContentInfoConfig
+ */
+
 /**
  * This module defines actions and state related to the display mode of the
  * sidebar.
@@ -11,6 +15,13 @@ const initialState = {
    * current state of the sidebar, but tracks whether it has ever been open
    */
   sidebarHasOpened: false,
+
+  /**
+   * Data for the content information banner shown in the host frame.
+   *
+   * @type {ContentInfoConfig|null}
+   */
+  contentInfo: null,
 };
 
 /** @typedef {typeof initialState} State */
@@ -28,6 +39,14 @@ const reducers = {
     // Otherwise, nothing to do here
     return {};
   },
+
+  /**
+   * @param {State} state
+   * @param {{ info: ContentInfoConfig }} action
+   */
+  SET_CONTENT_INFO(state, action) {
+    return { contentInfo: action.info };
+  },
 };
 
 /**
@@ -42,13 +61,25 @@ function hasSidebarOpened(state) {
   return state.sidebarHasOpened;
 }
 
+/** @param {ContentInfoConfig} info */
+function setContentInfo(info) {
+  return makeAction(reducers, 'SET_CONTENT_INFO', { info });
+}
+
+/** @param {State} state */
+function getContentInfo(state) {
+  return state.contentInfo;
+}
+
 export const viewerModule = createStoreModule(initialState, {
   namespace: 'viewer',
   reducers,
   actionCreators: {
+    setContentInfo,
     setSidebarOpened,
   },
   selectors: {
+    getContentInfo,
     hasSidebarOpened,
   },
 });