tor-browser

commit 6d4fb372d04c6c8a916e3ff0b847b0c8960e3c31
parent 3b4160acedbe1750e7e8d693ee2a45239c8f5fba
Author: Kelly Cochrane <kcochrane@mozilla.com>
Date:   Tue,  9 Dec 2025 16:12:06 +0000

Bug 2003991 - Ensure split view panels are shown when adding a split view to a new or existing tab group r=tabbrowser-reviewers,jsudiaman

Differential Revision: https://phabricator.services.mozilla.com/D275469

Diffstat:
M
browser/components/tabbrowser/content/tabsplitview.js
 | 
10
+++++++++-

1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/browser/components/tabbrowser/content/tabsplitview.js b/browser/components/tabbrowser/content/tabsplitview.js
@@ -39,6 +39,9 @@
     /** @type {MozTabbrowserTab[]} */
     #tabs = [];
 
+    /** @type {boolean} */
+    #activated = false;
+
     /**
      * @returns {boolean}
      */
@@ -145,14 +148,18 @@
      * Show all Split View tabs in the content area.
      */
     #activate() {
-      gBrowser.showSplitViewPanels(this.#tabs);
       updateUrlbarButton.arm();
+      if (this.#activated) {
+        return;
+      }
+      gBrowser.showSplitViewPanels(this.#tabs);
       this.container.dispatchEvent(
         new CustomEvent("TabSplitViewActivate", {
           detail: { tabs: this.#tabs, splitview: this },
           bubbles: true,
         })
       );
+      this.#activated = true;
     }
 
     /**
@@ -167,6 +174,7 @@
           bubbles: true,
         })
       );
+      this.#activated = false;
     }
 
     /**