merge conflicts

packages/overlayscrollbars/src/setups/scrollbarsSetup/scrollbarsSetup.elements.ts

@@ -4,6 +4,7 @@ import {
   createDiv,
   each,
   isEmptyArray,
+  noop,
   on,
   push,
   removeClass,
@@ -11,6 +12,7 @@ import {
   runEachAndClear,
   setT,
   stopPropagation,
+  style,
 } from 'support';
 import {
   classNameScrollbar,
@@ -30,6 +32,7 @@ import type {
   ScrollbarsInitializationStrategy,
   ScrollbarsDynamicInitializationElement,
 } from 'setups/scrollbarsSetup/scrollbarsSetup.initialization';
+import { StyleObject } from 'typings';
 
 export interface ScrollbarStructure {
   _scrollbar: HTMLElement;
@@ -40,7 +43,16 @@ export interface ScrollbarStructure {
 export interface ScrollbarsSetupElement {
   _scrollbarStructures: ScrollbarStructure[];
   _clone: () => ScrollbarStructure;
-  _addRemoveClass: (classNames: string | false | null | undefined, add?: boolean) => void;
+  _addRemoveClass: (
+    classNames: string,
+    add?: boolean,
+    elm?: (scrollbarStructure: ScrollbarStructure) => HTMLElement | false | null | undefined
+  ) => void;
+  _handleStyle: (
+    elmStyle: (
+      scrollbarStructure: ScrollbarStructure
+    ) => [HTMLElement | false | null | undefined, StyleObject]
+  ) => void;
   // _removeClass: (classNames: string) => void;
   /*
   _addEventListener: () => void;
@@ -89,12 +101,24 @@ export const createScrollbarsSetupElements = (
     );
   const scrollbarsAddRemoveClass = (
     scrollbarStructures: ScrollbarStructure[],
-    classNames: string | false | null | undefined,
-    add?: boolean
+    classNames: string,
+    add?: boolean,
+    elm?: (scrollbarStructure: ScrollbarStructure) => HTMLElement | false | null | undefined
   ) => {
     const action = add ? addClass : removeClass;
     each(scrollbarStructures, (scrollbarStructure) => {
-      action(scrollbarStructure._scrollbar, classNames);
+      action((elm || noop)(scrollbarStructure) || scrollbarStructure._scrollbar, classNames);
+    });
+  };
+  const scrollbarsHandleStyle = (
+    scrollbarStructures: ScrollbarStructure[],
+    elmStyle: (
+      scrollbarStructure: ScrollbarStructure
+    ) => [HTMLElement | false | null | undefined, StyleObject]
+  ) => {
+    each(scrollbarStructures, (scrollbarStructure) => {
+      const [elm, styles] = elmStyle(scrollbarStructure);
+      style(elm, styles);
     });
   };
   const destroyFns: (() => void)[] = [];
@@ -160,11 +184,13 @@ export const createScrollbarsSetupElements = (
         _scrollbarStructures: horizontalScrollbars,
         _clone: generateHorizontalScrollbarStructure,
         _addRemoveClass: addRemoveClassHorizontal,
+        _handleStyle: scrollbarsHandleStyle.bind(0, horizontalScrollbars),
       },
       _vertical: {
         _scrollbarStructures: verticalScrollbars,
         _clone: generateVerticalScrollbarStructure,
         _addRemoveClass: addRemoveClassVertical,
+        _handleStyle: scrollbarsHandleStyle.bind(0, verticalScrollbars),
       },
     },
     appendElements,

packages/overlayscrollbars/src/setups/scrollbarsSetup/scrollbarsSetup.ts

@@ -2,6 +2,7 @@ import { rAF, cAF, isFunction, on, runEachAndClear, setT, clearT } from 'support
 import { createState, createOptionCheck } from 'setups/setups';
 import {
   createScrollbarsSetupElements,
+  ScrollbarsSetupElement,
   ScrollbarsSetupElementsObj,
 } from 'setups/scrollbarsSetup/scrollbarsSetup.elements';
 import {
@@ -17,7 +18,7 @@ import type {
 } from 'options';
 import type { Setup, StructureSetupState, StructureSetupStaticState } from 'setups';
 import type { InitializationTarget } from 'initialization';
-import type { OverflowStyle } from 'typings';
+import type { OverflowStyle, StyleObject } from 'typings';
 
 // eslint-disable-next-line @typescript-eslint/no-empty-interface
 export interface ScrollbarsSetupState {}
@@ -27,6 +28,7 @@ export interface ScrollbarsSetupStaticState {
   _appendElements: () => void;
 }
 
+const { min } = Math;
 const createSelfCancelTimeout = (timeout?: number | (() => number)) => {
   let id: number;
   const setTFn = timeout ? setT : rAF!;
@@ -41,6 +43,105 @@ const createSelfCancelTimeout = (timeout?: number | (() => number)) => {
   ] as [timeout: (callback: () => any) => void, clear: () => void];
 };
 
+const refreshScrollbarHandleLength = (
+  setStyleFn: ScrollbarsSetupElement['_handleStyle'],
+  structureSetupState: StructureSetupState,
+  isHorizontal?: boolean
+) => {
+  const { _overflowAmount, _overflowEdge } = structureSetupState;
+  const axis = isHorizontal ? 'x' : 'y';
+  const viewportSize = _overflowEdge[axis];
+  const overflowAmount = _overflowAmount[axis];
+  const handleRatio = min(1, viewportSize / (viewportSize + overflowAmount));
+
+  setStyleFn((structure) => [
+    structure._handle,
+    {
+      [isHorizontal ? 'width' : 'height']: `${(handleRatio * 100).toFixed(3)}%`,
+    },
+  ]);
+};
+
+const refreshScrollbarHandlePosition = (
+  setStyleFn: (styles: StyleObject) => void,
+  structureSetupState: StructureSetupState,
+  isHorizontal?: boolean
+) => {
+  /*
+  //measure the handle length to respect min & max length
+  var handleLength = scrollbarVarsInfo._handleLength;
+  var trackLength = scrollbarVars._track[0]['offset' + scrollbarVars._Width_Height];
+  var handleTrackDiff = trackLength - handleLength;
+  var handleCSS = {};
+  var transformOffset;
+  var translateValue;
+
+  //DONT use the variable '_contentScrollSizeCache[scrollbarVars._w_h]' instead of '_viewportElement[0]['scroll' + scrollbarVars._Width_Height]'
+  // because its a bit behind during the small delay when content size updates
+  //(delay = mutationObserverContentLag, if its 0 then this var could be used)
+  var maxScroll =
+    (_viewportElementNative[_strScroll + scrollbarVars._Width_Height] -
+      _viewportElementNative['client' + scrollbarVars._Width_Height]) *
+    (_rtlScrollBehavior.n && isRTLisHorizontal ? -1 : 1); //* -1 if rtl scroll max is negative
+  var getScrollRatio = function (base) {
+    return isNaN(base / maxScroll) ? 0 : MATH.max(0, MATH.min(1, base / maxScroll));
+  };
+  var getHandleOffset = function (scrollRatio) {
+    var offset = handleTrackDiff * scrollRatio;
+    offset = isNaN(offset) ? 0 : offset;
+    offset =
+      isRTLisHorizontal && !_rtlScrollBehavior.i ? trackLength - handleLength - offset : offset;
+    offset = MATH.max(0, offset);
+    return offset;
+  };
+  var scrollRatio = getScrollRatio(nativeScroll);
+  var unsnappedScrollRatio = getScrollRatio(currentScroll);
+  var handleOffset = getHandleOffset(unsnappedScrollRatio);
+  var snappedHandleOffset = getHandleOffset(scrollRatio);
+
+  scrollbarVarsInfo._maxScroll = maxScroll;
+  scrollbarVarsInfo._currentScroll = nativeScroll;
+  scrollbarVarsInfo._currentScrollRatio = scrollRatio;
+
+  if (_supportTransform) {
+    transformOffset = isRTLisHorizontal
+      ? -(trackLength - handleLength - handleOffset)
+      : handleOffset; //in px
+    //transformOffset = (transformOffset / trackLength * 100) * (trackLength / handleLength); //in %
+    translateValue = isHorizontal
+      ? strTranslateBrace + transformOffset + 'px, 0)'
+      : strTranslateBrace + '0, ' + transformOffset + 'px)';
+
+    handleCSS[strTransform] = translateValue;
+
+    //apply or clear up transition
+    if (_supportTransition)
+      handleCSS[strTransition] =
+        transition && MATH.abs(handleOffset - scrollbarVarsInfo._handleOffset) > 1
+          ? getCSSTransitionString(scrollbarVars._handle) +
+            ', ' +
+            (strTransform + _strSpace + transitionDuration + 'ms')
+          : _strEmpty;
+  } else handleCSS[scrollbarVars._left_top] = handleOffset;
+
+  //only apply css if offset has changed and overflow exists.
+  if (!nativeOverlayScrollbarsAreActive()) {
+    scrollbarVars._handle.css(handleCSS);
+
+    //clear up transition
+    if (_supportTransform && _supportTransition && transition) {
+      scrollbarVars._handle.one(_strTransitionEndEvent, function () {
+        if (!_destroyed) scrollbarVars._handle.css(strTransition, _strEmpty);
+      });
+    }
+  }
+
+  scrollbarVarsInfo._handleOffset = handleOffset;
+  scrollbarVarsInfo._snappedHandleOffset = snappedHandleOffset;
+  scrollbarVarsInfo._trackLength = trackLength;
+  */
+};
+
 export const createScrollbarsSetup = (
   target: InitializationTarget,
   options: ReadonlyOSOptions,
@@ -66,8 +167,8 @@ export const createScrollbarsSetup = (
   );
   const { _host, _viewport } = structureSetupState._elements;
   const { _horizontal, _vertical } = elements;
-  const { _addRemoveClass: addRemoveClassHorizontal } = _horizontal;
-  const { _addRemoveClass: addRemoveClassVertical } = _vertical;
+  const { _addRemoveClass: addRemoveClassHorizontal, _handleStyle: styleHorizontal } = _horizontal;
+  const { _addRemoveClass: addRemoveClassVertical, _handleStyle: styleVertical } = _vertical;
   const manageScrollbarsAutoHide = (removeAutoHide: boolean, delayless?: boolean) => {
     clearAutoTimeout();
     if (removeAutoHide) {
@@ -133,6 +234,7 @@ export const createScrollbarsSetup = (
       const { _overflowEdgeChanged, _overflowAmountChanged, _overflowStyleChanged } =
         structureUpdateHints;
       const checkOption = createOptionCheck(options, changedOptions, force);
+      const currStructureSetupState = structureSetupState();
 
       const [theme, themeChanged] = checkOption<string | null>('scrollbars.theme');
       const [visibility, visibilityChanged] =
@@ -145,7 +247,7 @@ export const createScrollbarsSetup = (
       );
       const [touchSupport, touchSupportChanged] = checkOption<boolean>('scrollbars.touchSupport');
 
-      const updateHandleSize = _overflowEdgeChanged || _overflowAmountChanged;
+      const updateHandle = _overflowEdgeChanged || _overflowAmountChanged;
       const updateVisibility = _overflowStyleChanged || visibilityChanged;
 
       const setScrollbarVisibility = (
@@ -161,7 +263,7 @@ export const createScrollbarsSetup = (
       globalAutoHideDelay = autoHideDelay;
 
       if (updateVisibility) {
-        const { _overflowStyle } = structureSetupState();
+        const { _overflowStyle } = currStructureSetupState;
 
         const xVisible = setScrollbarVisibility(_overflowStyle.x, addRemoveClassHorizontal);
         const yVisible = setScrollbarVisibility(_overflowStyle.y, addRemoveClassVertical);
@@ -184,6 +286,10 @@ export const createScrollbarsSetup = (
         autoHideNotNever = autoHide !== 'never';
         manageScrollbarsAutoHide(!autoHideNotNever, true);
       }
+      if (updateHandle) {
+        refreshScrollbarHandleLength(styleHorizontal, currStructureSetupState, true);
+        refreshScrollbarHandleLength(styleVertical, currStructureSetupState);
+      }
     },
     scrollbarsSetupState,
     runEachAndClear.bind(0, destroyFns),

packages/overlayscrollbars/src/setups/structureSetup/structureSetup.observers.ts

@@ -20,6 +20,8 @@ import {
   closest,
   assignDeep,
   push,
+  scrollLeft,
+  scrollTop,
 } from 'support';
 import { getEnvironment } from 'environment';
 import {
@@ -28,6 +30,7 @@ import {
   classNameViewport,
   classNameOverflowVisible,
   classNameScrollbar,
+  classNameViewportArrange,
 } from 'classnames';
 import { createSizeObserver, SizeObserverCallbackParams } from 'observers/sizeObserver';
 import { createTrinsicObserver } from 'observers/trinsicObserver';
@@ -91,14 +94,21 @@ export const createStructureSetupObservers = (
       _initialValue: { w: 0, h: 0 },
     },
     () => {
-      const has = _viewportHasClass(classNameOverflowVisible, dataValueHostOverflowVisible);
-      has && _viewportAddRemoveClass(classNameOverflowVisible, dataValueHostOverflowVisible);
+      const hasOver = _viewportHasClass(classNameOverflowVisible, dataValueHostOverflowVisible);
+      const hasVpStyle = _viewportHasClass(classNameViewportArrange, '');
+      const scrollOffsetX = hasVpStyle && scrollLeft(_viewport);
+      const scrollOffsetY = hasVpStyle && scrollTop(_viewport);
+      _viewportAddRemoveClass(classNameOverflowVisible, dataValueHostOverflowVisible);
+      _viewportAddRemoveClass(classNameViewportArrange, '');
 
       const contentScroll = scrollSize(_content);
       const viewportScroll = scrollSize(_viewport);
       const fractional = fractionalSize(_viewport);
 
-      has && _viewportAddRemoveClass(classNameOverflowVisible, dataValueHostOverflowVisible, true);
+      _viewportAddRemoveClass(classNameOverflowVisible, dataValueHostOverflowVisible, hasOver);
+      _viewportAddRemoveClass(classNameViewportArrange, '', hasVpStyle);
+      scrollLeft(_viewport, scrollOffsetX);
+      scrollTop(_viewport, scrollOffsetY);
       return {
         w: viewportScroll.w + contentScroll.w + fractional.w,
         h: viewportScroll.h + contentScroll.h + fractional.h,

packages/overlayscrollbars/src/setups/structureSetup/structureSetup.update.ts

@@ -1,4 +1,4 @@
-import { each, isNumber, scrollLeft, scrollTop, assignDeep, keys } from 'support';
+import { each, scrollLeft, scrollTop, assignDeep, keys } from 'support';
 import { getEnvironment } from 'environment';
 import {
   createTrinsicUpdateSegment,
@@ -107,12 +107,8 @@ export const createStructureSetupUpdate = (
       );
     });
 
-    if (isNumber(scrollOffsetX)) {
-      scrollLeft(_viewport, scrollOffsetX);
-    }
-    if (isNumber(scrollOffsetY)) {
-      scrollTop(_viewport, scrollOffsetY);
-    }
+    scrollLeft(_viewport, scrollOffsetX);
+    scrollTop(_viewport, scrollOffsetY);
 
     return adaptivedUpdateHints;
   };

packages/overlayscrollbars/src/styles/scrollbars.scss

@@ -13,7 +13,7 @@ body > .os-scrollbar {
   transition: none;
 }
 .os-scrollbar-track {
-  pointer-events: auto;
+  pointer-events: none;
   position: relative;
   height: 100%;
   width: 100%;
@@ -21,14 +21,14 @@ body > .os-scrollbar {
   border: none !important;
 }
 .os-scrollbar-handle {
-  pointer-events: auto;
+  pointer-events: none;
   position: absolute;
   width: 100%;
   height: 100%;
 }
-.os-scrollbar-handle-off,
-.os-scrollbar-track-off {
-  pointer-events: none;
+.os-scrollbar-handle-interactive,
+.os-scrollbar-track-interactive {
+  pointer-events: auto;
 }
 .os-scrollbar-unusable,
 .os-scrollbar-unusable * {

packages/overlayscrollbars/src/support/dom/attribute.ts

@@ -1,5 +1,5 @@
 import { from } from 'support/utils/array';
-import { isUndefined } from 'support/utils/types';
+import { isNull, isUndefined } from 'support/utils/types';
 
 type GetSetPropName = 'scrollLeft' | 'scrollTop' | 'value';
 
@@ -14,20 +14,20 @@ type Attr = {
 
 type GetSetProp<T> = {
   (elm: HTMLElement | false | null | undefined): T;
-  (elm: HTMLElement | false | null | undefined, value: T): void;
-  (elm: HTMLElement | false | null | undefined, value?: T): number | void;
+  (elm: HTMLElement | false | null | undefined, value: T | false | null): void;
+  (elm: HTMLElement | false | null | undefined, value?: T | false | null): T | void;
 };
 
 const getSetProp = (
   topLeft: GetSetPropName,
   fallback: number | string,
   elm: HTMLElement | HTMLInputElement | false | null | undefined,
-  value?: number | string
+  value?: number | string | false | null
 ): number | string | void => {
   if (isUndefined(value)) {
     return elm ? elm[topLeft] : fallback;
   }
-  elm && (elm[topLeft] = value);
+  elm && !isNull(value) && value !== false && (elm[topLeft] = value);
 };
 
 /**
@@ -61,11 +61,13 @@ export const attrClass = (
   value: string,
   add?: boolean
 ) => {
-  const currValues = attr(elm, attrName) || '';
-  const currValuesSet = new Set(currValues.split(' '));
-  currValuesSet[add ? 'add' : 'delete'](value);
+  if (value) {
+    const currValues = attr(elm, attrName) || '';
+    const currValuesSet = new Set(currValues.split(' '));
+    currValuesSet[add ? 'add' : 'delete'](value);
 
-  attr(elm, attrName, from(currValuesSet).join(' ').trim());
+    attr(elm, attrName, from(currValuesSet).join(' ').trim());
+  }
 };
 
 /**
@@ -101,7 +103,7 @@ export const removeAttr = (elm: Element | false | null | undefined, attrName: st
  */
 export const scrollLeft = ((
   elm: HTMLElement | false | null | undefined,
-  value?: number
+  value?: number | false | null
 ): number | void => getSetProp('scrollLeft', 0, elm, value) as number) as GetSetProp<number>;
 
 /**
@@ -111,7 +113,7 @@ export const scrollLeft = ((
  */
 export const scrollTop = ((
   elm: HTMLElement | false | null | undefined,
-  value?: number
+  value?: number | false | null
 ): number | void => getSetProp('scrollTop', 0, elm, value) as number) as GetSetProp<number>;
 
 /**

packages/overlayscrollbars/src/support/dom/traversal.ts

@@ -74,7 +74,7 @@ const contents = (elm: InputElementType): ReadonlyArray<ChildNode> =>
  */
 const parent = (elm: InputElementType): OutputElementType => (elm ? elm.parentElement : null);
 
-export const closest = (elm: InputElementType, selector: string): OutputElementType => {
+const closest = (elm: InputElementType, selector: string): OutputElementType => {
   if (isElement(elm)) {
     const closestFn = elmPrototype.closest;
     if (closestFn) {
@@ -113,4 +113,4 @@ const liesBetween = (
     : false;
 };
 
-export { find, findFirst, is, children, contents, parent, liesBetween };
+export { find, findFirst, is, children, contents, parent, liesBetween, closest };

packages/overlayscrollbars/tests/playwright/setups/structureSetup/update/index.browser.ts

@@ -30,7 +30,6 @@ if (!window.ResizeObserver) {
   addPlugin(sizeObserverPlugin);
 }
 if (!OverlayScrollbars.env().scrollbarsHiding) {
-  console.log('added');
   addPlugin(scrollbarsHidingPlugin);
 }