Add ability to deactivate sync of parent tab and opener tab

Author: piroor

webextensions/background/background.js

@@ -315,7 +315,8 @@ async function attachTabFromRestoredInfo(aTab, aOptions = {}) {
   }
   var opener = getOpenerTab(aTab);
   if (!attached &&
-      opener) {
+      opener &&
+      configs.syncParentTabAndOpenerTab) {
     await attachTabTo(aTab, opener, {
       dontExpand:  !active,
       forceExpand: active,

webextensions/background/handlers.js

@@ -556,7 +556,9 @@ function handleNewActiveTab(aTab, aInfo = {}) {
 
 function onTabUpdated(aTab) {
   var parent = getOpenerTab(aTab);
-  if (parent && parent != getParentTab(aTab)) {
+  if (parent &&
+      parent != getParentTab(aTab) &&
+      configs.syncParentTabAndOpenerTab) {
     attachTabTo(aTab, parent, {
       insertAt:    kINSERT_NEAREST,
       forceExpand: isActive(aTab),
@@ -580,7 +582,8 @@ function onTabCollapsedStateChanged(aTab, aInfo = {}) {
 
 async function onTabAttached(aTab, aInfo = {}) {
   var parent = aInfo.parent;
-  if (aTab.apiTab.openerTabId != parent.apiTab.id) {
+  if (aTab.apiTab.openerTabId != parent.apiTab.id &&
+      configs.syncParentTabAndOpenerTab) {
     aTab.apiTab.openerTabId = parent.apiTab.id;
     aTab.apiTab.TSTUpdatedOpenerTabId = aTab.apiTab.openerTabId; // workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=1409262
     browser.tabs.update(aTab.apiTab.id, { openerTabId: parent.apiTab.id })
@@ -701,7 +704,8 @@ async function onTabAttached(aTab, aInfo = {}) {
 }
 
 function onTabDetached(aTab, aDetachInfo) {
-  if (aTab.apiTab.openerTabId) {
+  if (aTab.apiTab.openerTabId &&
+      configs.syncParentTabAndOpenerTab) {
     aTab.apiTab.openerTabId = aTab.apiTab.id;
     aTab.apiTab.TSTUpdatedOpenerTabId = aTab.apiTab.openerTabId; // workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=1409262
     browser.tabs.update(aTab.apiTab.id, { openerTabId: aTab.apiTab.id }) // set self id instead of null, because it requires any valid tab id...

webextensions/common/common.js

@@ -114,6 +114,8 @@ configs = new Configs({
 
   parentTabBehaviorForChanges: kPARENT_TAB_BEHAVIOR_ALWAYS,
 
+  syncParentTabAndOpenerTab: true,
+
 
   // grouping
   autoGroupNewTabs: true,