Glance can now be on multiple tabs and improved animations

src/browser/components/tabbrowser/content/tabbrowser-js.patch

@@ -1,5 +1,5 @@
 diff --git a/browser/components/tabbrowser/content/tabbrowser.js b/browser/components/tabbrowser/content/tabbrowser.js
-index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..6362493d8ec06aa90cc3425498c0fb749b23d289 100644
+index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..9aaa4b0cd8a8bb76c59415f2322d739cbe00302e 100644
 --- a/browser/components/tabbrowser/content/tabbrowser.js
 +++ b/browser/components/tabbrowser/content/tabbrowser.js
 @@ -406,11 +406,39 @@
@@ -219,19 +219,26 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..6362493d8ec06aa90cc3425498c0fb74
        // Handle requests for synchronously removing an already
        // asynchronously closing tab.
        if (!animate && aTab.closing) {
-@@ -4471,7 +4559,10 @@
+@@ -4457,7 +4545,9 @@
+       // frame created for it (for example, by updating the visually selected
+       // state).
+       let tabWidth = window.windowUtils.getBoundsWithoutFlushing(aTab).width;
+-
++      if (gZenGlanceManager.manageTabClose(aTab)) {
++        return;
++      }
+       if (
+         !this._beginRemoveTab(aTab, {
+           closeWindowFastpath: true,
+@@ -4471,7 +4561,6 @@
          TelemetryStopwatch.cancel("FX_TAB_CLOSE_TIME_NO_ANIM_MS", aTab);
          return;
        }
 -
-+      if (aTab.hasAttribute("zen-glance-tab")) {
-+        gZenGlanceManager.closeGlance();
-+        return;
-+      }
        let lockTabSizing =
          !this.tabContainer.verticalMode &&
          !aTab.pinned &&
-@@ -4610,14 +4701,14 @@
+@@ -4610,14 +4699,14 @@
          !!this.tabsInCollapsedTabGroups.length;
        if (
          aTab.visible &&
@@ -248,7 +255,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..6362493d8ec06aa90cc3425498c0fb74
  
          if (closeWindow) {
            // We've already called beforeunload on all the relevant tabs if we get here,
-@@ -5465,10 +5556,10 @@
+@@ -5465,10 +5554,10 @@
        SessionStore.deleteCustomTabValue(aTab, "hiddenBy");
      }
  
@@ -261,7 +268,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..6362493d8ec06aa90cc3425498c0fb74
          aTab.selected ||
          aTab.closing ||
          // Tabs that are sharing the screen, microphone or camera cannot be hidden.
-@@ -7443,6 +7534,7 @@
+@@ -7443,6 +7532,7 @@
              aWebProgress.isTopLevel
            ) {
              this.mTab.setAttribute("busy", "true");
@@ -269,7 +276,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..6362493d8ec06aa90cc3425498c0fb74
              gBrowser._tabAttrModified(this.mTab, ["busy"]);
              this.mTab._notselectedsinceload = !this.mTab.selected;
              gBrowser.syncThrobberAnimations(this.mTab);
-@@ -8411,7 +8503,7 @@ var TabContextMenu = {
+@@ -8411,7 +8501,7 @@ var TabContextMenu = {
      );
      contextUnpinSelectedTabs.hidden =
        !this.contextTab.pinned || !multiselectionContext;
@@ -278,7 +285,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..6362493d8ec06aa90cc3425498c0fb74
      // Move Tab items
      let contextMoveTabOptions = document.getElementById(
        "context_moveTabOptions"
-@@ -8444,7 +8536,7 @@ var TabContextMenu = {
+@@ -8444,7 +8534,7 @@ var TabContextMenu = {
      let contextMoveTabToStart = document.getElementById("context_moveToStart");
      let isFirstTab =
        tabsToMove[0] == visibleTabs[0] ||
@@ -287,7 +294,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..6362493d8ec06aa90cc3425498c0fb74
      contextMoveTabToStart.disabled = isFirstTab && allSelectedTabsAdjacent;
  
      document.getElementById("context_openTabInWindow").disabled =
-@@ -8677,6 +8769,7 @@ var TabContextMenu = {
+@@ -8677,6 +8767,7 @@ var TabContextMenu = {
      if (this.contextTab.multiselected) {
        gBrowser.removeMultiSelectedTabs();
      } else {