Add "reload" command for internal operations.

It is imported from #2239 and https://github.com/piroor/treestyletab/tree/PowerAccess-master

Author: piroor

webextensions/background/background.js

@@ -269,6 +269,20 @@ async function rebuildAll(windows) {
   return restoredFromCache;
 }
 
+export async function reload(options = {}) {
+  mPreloadedCaches.clear();
+  await MetricsData.addAsync('reload: rebuildAll', rebuildAll());
+  if (!options.all)
+    return;
+  for (const window of TabsStore.windows.values()) {
+    if (!SidebarConnection.isOpen(window.id))
+      continue;
+    browser.runtime.sendMessage({
+      type: Constants.kCOMMAND_RELOAD_SIDEBARS
+    }).catch(ApiTabs.createErrorSuppressor());
+  }
+}
+
 export async function tryStartHandleAccelKeyOnTab(tab) {
   if (!TabsStore.ensureLivingTab(tab))
     return;

webextensions/background/handle-misc.js

@@ -264,6 +264,9 @@ function onMessage(message, sender) {
 
   //log('onMessage: ', message, sender);
   switch (message.type) {
+    case Constants.kCOMMAND_RELOAD:
+     return Background.reload({ all: message.all });
+
     case Constants.kCOMMAND_REQUEST_UNIQUE_ID:
       return (async () => {
         if (!Tab.get(message.tabId))

webextensions/common/constants.js

@@ -8,6 +8,7 @@
 export const kBACKGROUND_CONTENTS_VERSION = 5;
 export const kSIDEBAR_CONTENTS_VERSION    = 8;
 
+export const kCOMMAND_RELOAD                         = 'treestyletab:reload';
 export const kCOMMAND_PING_TO_BACKGROUND             = 'treestyletab:ping-to-background';
 export const kCOMMAND_PING_TO_SIDEBAR                = 'treestyletab:ping-to-sidebar';
 export const kCOMMAND_REQUEST_CONNECT_PREFIX         = 'treestyletab:request-connect-from:';

webextensions/sidebar/sidebar.js

@@ -854,6 +854,10 @@ function onMessage(message, _sender, _respond) {
     case Constants.kCOMMAND_CONFIRM_TO_AUTO_GROUP_NEW_TABS:
       log('kCOMMAND_CONFIRM_TO_AUTO_GROUP_NEW_TABS: ', { message, mTargetWindow });
       return confirmToAutoGroupNewTabs(message.tabIds);
+
+    case Constants.kCOMMAND_RELOAD:
+      location.reload();
+      return;
   }
 }