Refactor zen-glance styles and improve tab handling in ZenGlanceManager

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

@@ -1,5 +1,5 @@
 diff --git a/browser/components/tabbrowser/content/tabs.js b/browser/components/tabbrowser/content/tabs.js
-index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c45dd02404 100644
+index 8aeb244ffca9f48661805f5b7d860b5896055562..e07019130c199401702889c6765434de0bd708a2 100644
 --- a/browser/components/tabbrowser/content/tabs.js
 +++ b/browser/components/tabbrowser/content/tabs.js
 @@ -94,7 +94,7 @@
@@ -99,7 +99,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
        ) {
          delete draggedTab._dragData;
          return;
-@@ -1512,7 +1525,7 @@
+@@ -1512,9 +1525,18 @@
        }
  
        this.#allTabs = [
@@ -107,8 +107,19 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
 +        ...document.getElementById("zen-essentials-container").children, ...this.verticalPinnedTabsContainer.children,
          ...children,
        ];
++      for (let i = 0; i < this.#allTabs.length; i++) {
++        // add glance tabs (tabs inside tabs) to the list
++        const glanceTab = this.#allTabs[i].querySelector("tab[zen-glance-tab]");
++        if (glanceTab) {
++          // insert right after the parent tab
++          this.#allTabs.splice(i + 1, 0, glanceTab);
++          i++;
++        }
++      }
        return this.#allTabs;
-@@ -1593,6 +1606,7 @@
+     }
+ 
+@@ -1593,6 +1615,7 @@
        }
  
        this.#focusableItems = [
@@ -116,7 +127,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
          ...verticalPinnedTabsContainer.children,
          ...focusableItems,
        ];
-@@ -1617,8 +1631,8 @@
+@@ -1617,8 +1640,8 @@
      #isContainerVerticalPinnedExpanded(tab) {
        return (
          this.verticalMode &&
@@ -127,7 +138,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
        );
      }
  
-@@ -1816,7 +1830,7 @@
+@@ -1816,7 +1839,7 @@
            let rect = ele => {
              return window.windowUtils.getBoundsWithoutFlushing(ele);
            };
@@ -136,7 +147,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
            if (tab && rect(tab).width <= this._tabClipWidth) {
              this.setAttribute("closebuttons", "activetab");
            } else {
-@@ -1832,6 +1846,7 @@
+@@ -1832,6 +1855,7 @@
          this.arrowScrollbox.ensureElementIsVisible(selectedTab, aInstant);
        }
  
@@ -144,7 +155,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
        selectedTab._notselectedsinceload = false;
      }
  
-@@ -1879,7 +1894,7 @@
+@@ -1879,7 +1903,7 @@
          if (isEndTab && !this._hasTabTempMaxWidth) {
            return;
          }
@@ -153,7 +164,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
          // Force tabs to stay the same width, unless we're closing the last tab,
          // which case we need to let them expand just enough so that the overall
          // tabbar width is the same.
-@@ -1894,7 +1909,7 @@
+@@ -1894,7 +1918,7 @@
          let tabsToReset = [];
          for (let i = numPinned; i < tabs.length; i++) {
            let tab = tabs[i];
@@ -162,7 +173,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
            if (!isEndTab) {
              // keep tabs the same width
              tab.style.transition = "none";
-@@ -1963,13 +1978,13 @@
+@@ -1963,13 +1987,13 @@
        let verticalTabsContainer = document.getElementById(
          "vertical-pinned-tabs-container"
        );
@@ -179,7 +190,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
          }
        }
  
-@@ -1993,7 +2008,7 @@
+@@ -1993,7 +2017,7 @@
  
      _positionPinnedTabs() {
        let tabs = this.visibleTabs;
@@ -188,7 +199,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
        let absPositionHorizontalTabs =
          this.overflowing && tabs.length > numPinned && numPinned > 0;
  
-@@ -2074,7 +2089,7 @@
+@@ -2074,7 +2098,7 @@
          return;
        }
  
@@ -197,7 +208,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
  
        let directionX = screenX > dragData.animLastScreenX;
        let directionY = screenY > dragData.animLastScreenY;
-@@ -2257,9 +2272,9 @@
+@@ -2257,9 +2281,9 @@
        }
  
        let pinned = draggedTab.pinned;
@@ -209,7 +220,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
          pinned ? numPinned : undefined
        );
  
-@@ -2502,8 +2517,9 @@
+@@ -2502,8 +2526,9 @@
        );
      }
  
@@ -221,7 +232,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
          return;
        }
  
-@@ -2668,9 +2684,9 @@
+@@ -2668,9 +2693,9 @@
        function newIndex(aTab, index) {
          // Don't allow mixing pinned and unpinned tabs.
          if (aTab.pinned) {
@@ -233,7 +244,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
        }
      }
  
-@@ -2754,7 +2770,7 @@
+@@ -2754,7 +2779,7 @@
      }
  
      _notifyBackgroundTab(aTab) {
@@ -242,7 +253,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
          return;
        }
  
-@@ -2772,12 +2788,14 @@
+@@ -2772,12 +2797,14 @@
                selectedTab = {
                  left: selectedTab.left,
                  right: selectedTab.right,
@@ -258,7 +269,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
                selectedTab,
              ];
            })
-@@ -2794,8 +2812,11 @@
+@@ -2794,8 +2821,11 @@
              delete this._lastTabToScrollIntoView;
              // Is the new tab already completely visible?
              if (
@@ -272,7 +283,7 @@ index 8aeb244ffca9f48661805f5b7d860b5896055562..a36fc2cb5761323fd40d367fd04234c4
              ) {
                return;
              }
-@@ -2803,21 +2824,29 @@
+@@ -2803,21 +2833,29 @@
              if (this.arrowScrollbox.smoothScroll) {
                // Can we make both the new tab and the selected tab completely visible?
                if (