1 files changed, 0 insertions, 172 deletions
diff --git a/browser/components/customizableui/PanelWideWidgetTracker.jsm b/browser/components/customizableui/PanelWideWidgetTracker.jsm
deleted file mode 100644
index 768cebbca..000000000
--- a/browser/components/customizableui/PanelWideWidgetTracker.jsm
+++ /dev/null
@@ -1,172 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-"use strict";
-const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
-
-this.EXPORTED_SYMBOLS = ["PanelWideWidgetTracker"];
-
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "CustomizableUI",
-  "resource:///modules/CustomizableUI.jsm");
-
-var gPanel = CustomizableUI.AREA_PANEL;
-// We keep track of the widget placements for the panel locally:
-var gPanelPlacements = [];
-
-// All the wide widgets we know of:
-var gWideWidgets = new Set();
-// All the widgets we know of:
-var gSeenWidgets = new Set();
-
-var PanelWideWidgetTracker = {
-  // Listeners used to validate panel contents whenever they change:
-  onWidgetAdded: function(aWidgetId, aArea, aPosition) {
-    if (aArea == gPanel) {
-      gPanelPlacements = CustomizableUI.getWidgetIdsInArea(gPanel);
-      let moveForward = this.shouldMoveForward(aWidgetId, aPosition);
-      this.adjustWidgets(aWidgetId, moveForward);
-    }
-  },
-  onWidgetMoved: function(aWidgetId, aArea, aOldPosition, aNewPosition) {
-    if (aArea == gPanel) {
-      gPanelPlacements = CustomizableUI.getWidgetIdsInArea(gPanel);
-      let moveForward = this.shouldMoveForward(aWidgetId, aNewPosition);
-      this.adjustWidgets(aWidgetId, moveForward);
-    }
-  },
-  onWidgetRemoved: function(aWidgetId, aPrevArea) {
-    if (aPrevArea == gPanel) {
-      gPanelPlacements = CustomizableUI.getWidgetIdsInArea(gPanel);
-      this.adjustWidgets(aWidgetId, false);
-    }
-  },
-  onWidgetReset: function(aWidgetId) {
-    gPanelPlacements = CustomizableUI.getWidgetIdsInArea(gPanel);
-  },
-  // Listener to keep abreast of any new nodes. We use the DOM one because
-  // we need access to the actual node's classlist, so we can't use the ones above.
-  // Furthermore, onWidgetCreated only fires for API-based widgets, not for XUL ones.
-  onWidgetAfterDOMChange: function(aNode, aNextNode, aContainer) {
-    if (!gSeenWidgets.has(aNode.id)) {
-      if (aNode.classList.contains(CustomizableUI.WIDE_PANEL_CLASS)) {
-        gWideWidgets.add(aNode.id);
-      }
-      gSeenWidgets.add(aNode.id);
-    }
-  },
-  // When widgets get destroyed, we remove them from our sets of stuff we care about:
-  onWidgetDestroyed: function(aWidgetId) {
-    gSeenWidgets.delete(aWidgetId);
-    gWideWidgets.delete(aWidgetId);
-  },
-  shouldMoveForward: function(aWidgetId, aPosition) {
-    let currentWidgetAtPosition = gPanelPlacements[aPosition + 1];
-    let rv = gWideWidgets.has(currentWidgetAtPosition) && !gWideWidgets.has(aWidgetId);
-    // We might now think we can move forward, but for that we need at least 2 more small
-    // widgets to be present:
-    if (rv) {
-      let furtherWidgets = gPanelPlacements.slice(aPosition + 2);
-      let realWidgets = 0;
-      if (furtherWidgets.length >= 2) {
-        while (furtherWidgets.length && realWidgets < 2) {
-          let w = furtherWidgets.shift();
-          if (!gWideWidgets.has(w) && this.checkWidgetStatus(w)) {
-            realWidgets++;
-          }
-        }
-      }
-      if (realWidgets < 2) {
-        rv = false;
-      }
-    }
-    return rv;
-  },
-  adjustWidgets: function(aWidgetId, aMoveForwards) {
-    if (this.adjusting) {
-      return;
-    }
-    this.adjusting = true;
-    let widgetsAffected = gPanelPlacements.filter((w) => gWideWidgets.has(w));
-    // If we're moving the wide widgets forwards (down/to the right in the panel)
-    // we want to start with the last widgets. Otherwise we move widgets over other wide
-    // widgets, which might mess up their order. Likewise, if moving backwards we should start with
-    // the first widget and work our way down/right from there.
-    let compareFn = aMoveForwards ? ((a, b) => a < b) : ((a, b) => a > b);
-    widgetsAffected.sort((a, b) => compareFn(gPanelPlacements.indexOf(a),
-                                             gPanelPlacements.indexOf(b)));
-    for (let widget of widgetsAffected) {
-      this.adjustPosition(widget, aMoveForwards);
-    }
-    this.adjusting = false;
-  },
-  // This function is called whenever an item gets moved in the menu panel. It
-  // adjusts the position of widgets within the panel to prevent "gaps" between
-  // wide widgets that could be filled up with single column widgets
-  adjustPosition: function(aWidgetId, aMoveForwards) {
-    // Make sure that there are n % columns = 0 narrow buttons before the widget.
-    let placementIndex = gPanelPlacements.indexOf(aWidgetId);
-    let prevSiblingCount = 0;
-    let fixedPos = null;
-    while (placementIndex--) {
-      let thisWidgetId = gPanelPlacements[placementIndex];
-      if (gWideWidgets.has(thisWidgetId)) {
-        continue;
-      }
-      let widgetStatus = this.checkWidgetStatus(thisWidgetId);
-      if (!widgetStatus) {
-        continue;
-      }
-      if (widgetStatus == "public-only") {
-        fixedPos = !fixedPos ? placementIndex : Math.min(fixedPos, placementIndex);
-        prevSiblingCount = 0;
-      } else {
-        prevSiblingCount++;
-      }
-    }
-
-    if (fixedPos !== null || prevSiblingCount % CustomizableUI.PANEL_COLUMN_COUNT) {
-      let desiredPos = (fixedPos !== null) ? fixedPos : gPanelPlacements.indexOf(aWidgetId);
-      let desiredChange = -(prevSiblingCount % CustomizableUI.PANEL_COLUMN_COUNT);
-      if (aMoveForwards && fixedPos == null) {
-        // +1 because otherwise we'd count ourselves:
-        desiredChange = CustomizableUI.PANEL_COLUMN_COUNT + desiredChange + 1;
-      }
-      desiredPos += desiredChange;
-      CustomizableUI.moveWidgetWithinArea(aWidgetId, desiredPos);
-    }
-  },
-
-  /*
-   * Check whether a widget id is actually known anywhere.
-   * @returns false if the widget doesn't exist,
-   *          "public-only" if it's not shown in private windows
-   *          "real" if it does exist and is shown even in private windows
-   */
-  checkWidgetStatus: function(aWidgetId) {
-    let widgetWrapper = CustomizableUI.getWidget(aWidgetId);
-    // This widget might not actually exist:
-    if (!widgetWrapper) {
-      return false;
-    }
-    // This widget might still not actually exist:
-    if (widgetWrapper.provider == CustomizableUI.PROVIDER_XUL &&
-        widgetWrapper.instances.length == 0) {
-      return false;
-    }
-
-    // Or it might only be there some of the time:
-    if (widgetWrapper.provider == CustomizableUI.PROVIDER_API &&
-        widgetWrapper.showInPrivateBrowsing === false) {
-      return "public-only";
-    }
-    return "real";
-  },
-
-  init: function() {
-    // Initialize our local placements copy and register the listener
-    gPanelPlacements = CustomizableUI.getWidgetIdsInArea(gPanel);
-    CustomizableUI.addListener(this);
-  },
-};