Function onUnload

firefox/lib/main.js:79–85

()

  
  // Add an unload listener to the tab's page in order to reset the button badge on back/forward cache (bfCache)
  function onUnload() {
    if (tabs.activeTab.id == tabId) {
      console.log("unload");
      updateButton(null);
      tabUtil.getTabContentWindow(firefox.getBrowserTabElement(tabId)).removeEventListener("unload", onUnload);
    }
  }
  tabUtil.getTabContentWindow(firefox.getBrowserTabElement(tabId)).addEventListener("unload", onUnload);

  console.log("tab ready: " + tabId);