Refactor tab movement logic and improve workspace 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..8f2cd9ecd708e58a6b162740bb21dafeda43b085 100644
+index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..e06b7ffb6c7769ad3f29e2c5aa05156a34fd7933 100644
 --- a/browser/components/tabbrowser/content/tabbrowser.js
 +++ b/browser/components/tabbrowser/content/tabbrowser.js
 @@ -406,11 +406,52 @@
@@ -369,17 +369,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..8f2cd9ecd708e58a6b162740bb21dafe
          if (forceStandaloneTab && neighbor.group) {
            neighbor = neighbor.group;
          }
-@@ -5727,6 +5835,9 @@
-           this.tabContainer.insertBefore(aTab, neighbor);
-         }
-       });
-+      if (aTab.hasAttribute("glance-id")) {
-+        this.moveTabTo(aTab.querySelector("tab[glance-id]"), aIndex, options);
-+      }
-     }
- 
-     moveTabToGroup(aTab, aGroup) {
-@@ -5802,7 +5913,7 @@
+@@ -5802,7 +5910,7 @@
          createLazyBrowser,
        };
  
@@ -388,7 +378,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..8f2cd9ecd708e58a6b162740bb21dafe
        if (aIndex < numPinned || (aTab.pinned && aIndex == numPinned)) {
          params.pinned = true;
        }
-@@ -7443,6 +7554,7 @@
+@@ -7443,6 +7551,7 @@
              aWebProgress.isTopLevel
            ) {
              this.mTab.setAttribute("busy", "true");
@@ -396,7 +386,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..8f2cd9ecd708e58a6b162740bb21dafe
              gBrowser._tabAttrModified(this.mTab, ["busy"]);
              this.mTab._notselectedsinceload = !this.mTab.selected;
              gBrowser.syncThrobberAnimations(this.mTab);
-@@ -8411,7 +8523,7 @@ var TabContextMenu = {
+@@ -8411,7 +8520,7 @@ var TabContextMenu = {
      );
      contextUnpinSelectedTabs.hidden =
        !this.contextTab.pinned || !multiselectionContext;
@@ -405,7 +395,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..8f2cd9ecd708e58a6b162740bb21dafe
      // Move Tab items
      let contextMoveTabOptions = document.getElementById(
        "context_moveTabOptions"
-@@ -8444,7 +8556,7 @@ var TabContextMenu = {
+@@ -8444,7 +8553,7 @@ var TabContextMenu = {
      let contextMoveTabToStart = document.getElementById("context_moveToStart");
      let isFirstTab =
        tabsToMove[0] == visibleTabs[0] ||
@@ -414,7 +404,7 @@ index ff90a70bdad6c94ec4b90027ff102972d0eb28e5..8f2cd9ecd708e58a6b162740bb21dafe
      contextMoveTabToStart.disabled = isFirstTab && allSelectedTabsAdjacent;
  
      document.getElementById("context_openTabInWindow").disabled =
-@@ -8677,6 +8789,7 @@ var TabContextMenu = {
+@@ -8677,6 +8786,7 @@ var TabContextMenu = {
      if (this.contextTab.multiselected) {
        gBrowser.removeMultiSelectedTabs();
      } else {