Add button to unhide all groups in popup.

Adds a button with the text "Unhide all", next to the "Sort tabs" button in the popup menu.
This button will show all tabs from all containers.

webextension/css/popup.css

@@ -450,7 +450,7 @@ manage things like container crud */
   margin-inline-start: var(--inline-item-space-size);
 }
 
-#container-panel #sort-containers-link {
+#container-panel .action-link {
   align-items: center;
   block-size: var(--block-url-label-size);
   border: 1px solid #d8d8d8;
@@ -460,11 +460,12 @@ manage things like container crud */
   font-size: var(--small-text-size);
   inline-size: var(--inline-button-size);
   justify-content: center;
+  margin-left: var(--block-line-space-size);
   text-decoration: none;
 }
 
-#container-panel #sort-containers-link:hover,
-#container-panel #sort-containers-link:focus {
+#container-panel .action-link:hover,
+#container-panel .action-link:focus {
   background: #f2f2f2;
 }
 

webextension/js/background/backgroundLogic.js

@@ -299,8 +299,26 @@ const backgroundLogic = {
     return await identityState.storageArea.set(options.cookieStoreId, containerState);
   },
 
+  async unhideAllTabs(windowId) {
+    const [identities, state] = await Promise.all([
+      browser.contextualIdentities.query({}),
+      backgroundLogic.queryIdentitiesState(windowId)
+    ]);
+
+    const promises = [];
+    identities.filter(identity => {
+      const stateObject = state[identity.cookieStoreId];
+      return stateObject && stateObject.hasHiddenTabs;
+    }).map(identity => identity.cookieStoreId)
+    .forEach(cookieStoreId => {
+      // We need to call unhideContainer in messageHandler to prevent it from
+      // unhiding multiple times
+      promises.push(messageHandler.unhideContainer(cookieStoreId));
+    });
+    return Promise.all(promises);
+  },
+
   cookieStoreId(userContextId) {
     return `firefox-container-${userContextId}`;
   }
 };
-

webextension/js/background/messageHandler.js

@@ -68,6 +68,9 @@ const messageHandler = {
       case "exemptContainerAssignment":
         response = assignManager._exemptTab(m);
         break;
+      case "unhideAllTabs":
+        response = backgroundLogic.unhideAllTabs(m.message.windowId);
+        break;
       }
       return response;
     });

webextension/js/popup.js

@@ -500,6 +500,20 @@ Logic.registerPanel(P_CONTAINERS_LIST, {
       }
     });
 
+    Logic.addEnterHandler(document.querySelector("#unhide-all-containers-link"), async function () {
+      try {
+        await browser.runtime.sendMessage({
+          method: "unhideAllTabs",
+          message: {
+            windowId: browser.windows.WINDOW_ID_CURRENT
+          }
+        });
+        window.close();
+      } catch (e) {
+        window.close();
+      }
+    });
+
     document.addEventListener("keydown", (e) => {
       const selectables = [...document.querySelectorAll("[tabindex='0'], [tabindex='-1']")];
       const element = document.activeElement;

webextension/popup.html

@@ -108,6 +108,7 @@
       </label>
     </div>
     <div class="container-panel-controls">
+      <a href="#" class="action-link" id="unhide-all-containers-link" title="Show all hidden containers">Show all</a>
       <a href="#" class="action-link" id="sort-containers-link" title="Sort tabs into container order">Sort Tabs</a>
     </div>
     <div class="scrollable panel-content" tabindex="-1">