Add Adaptive Splitter Component and Update Styles

- Introduced a new AdaptiveSplitter component to enhance layout flexibility in the dashboard, allowing for dynamic resizing of panels.
- Updated App.css to include styles for the new adaptive splitter, ensuring consistent appearance and behavior across different orientations.
- Refactored DashboardSidebarSplitter to utilize the AdaptiveSplitter, improving sidebar management and responsiveness during resizing.
- Adjusted transition properties and sizes for smoother user experience when interacting with the splitter components.

assets/stylesheets/App.css

@@ -37,6 +37,7 @@
 .ant-badge,
 .ant-select-dropdown,
 .ant-splitter,
+.adaptive-splitter,
 .ant-steps-item-title,
 .ant-steps-icon,
 .ant-color-picker-presets-label,
@@ -528,11 +529,13 @@ body {
   width: 35%;
 }
 
-.farmcontrol-splitter > .ant-splitter-bar {
+.farmcontrol-splitter > .ant-splitter-bar,
+.farmcontrol-splitter > .adaptive-splitter-bar {
   margin: 8px;
 }
 
-.farmcontrol-splitter.large > .ant-splitter-bar {
+.farmcontrol-splitter.large > .ant-splitter-bar,
+.farmcontrol-splitter.large > .adaptive-splitter-bar {
   margin: 11px;
   opacity: 0.6;
 }
@@ -938,41 +941,18 @@ span.ant-skeleton-input.ant-skeleton-input-sm.text-skeleton {
 }
 
 .sidebar-scroll .simplebar-track.simplebar-vertical {
-  right: -1px;
+  top: 8px;
-  width: 0px !important;
+  right: calc(-1 * var(--scrollbox-vertical-right-padding) - 0.5px);
-  transition:
+  width: 8px !important;
-    width 0.15s ease-in-out,
-    right 0.15s ease-in-out;
-}
-
-.sidebar-scroll .simplebar-track.simplebar-vertical {
-  border-radius: 0 0 6.5px 0;
-}
-
-.sidebar-scroll.dark .simplebar-track.simplebar-vertical {
-  background-color: #141414;
-  border-inline-end: 1px solid rgba(253, 253, 253, 0.12);
-  border-bottom: 1px solid rgba(253, 253, 253, 0.12);
-}
-
-.sidebar-scroll.light .simplebar-track.simplebar-vertical {
-  background-color: #ffffff;
-  border-inline-end: 1px solid rgba(5, 5, 5, 0.06);
-  border-bottom: 1px solid rgba(5, 5, 5, 0.06);
-}
-
-.sidebar-scroll.simplebar-scrolling .simplebar-track.simplebar-vertical {
-  width: 12px !important;
-  right: -13px;
 }
 
 .sidebar-scroll
   .simplebar-track.simplebar-vertical
   .simplebar-scrollbar:before {
-  top: 4px;
+  top: 2px;
-  bottom: 4px;
+  bottom: 2px;
-  left: 4px;
+  left: 2px;
-  right: 4px;
+  right: 2px;
 }
 
 .ant-color-picker
@@ -1096,29 +1076,229 @@ span.ant-skeleton-input.ant-skeleton-input-sm.text-skeleton {
   margin-left: 4px;
 }
 
-.farmcontrol-splitter .ant-splitter-panel {
+.farmcontrol-splitter .ant-splitter-panel,
+.farmcontrol-splitter .adaptive-splitter-panel {
   overflow: visible;
 }
 
-.farmcontrol-splitter.ant-splitter-horizontal .ant-splitter-panel {
+.farmcontrol-splitter.ant-splitter-horizontal .ant-splitter-panel,
+.farmcontrol-splitter.adaptive-splitter-horizontal .adaptive-splitter-panel {
   width: 100%;
   min-width: 0;
 }
 
-.farmcontrol-splitter.ant-splitter-horizontal.is-size-transitioning
+.adaptive-splitter {
-  .ant-splitter-panel {
+  display: flex;
-  transition:
+  width: 100%;
-    --dashboard-splitter-sidebar-size 0.3s cubic-bezier(0.2, 0, 0, 1) 0s,
+  height: 100%;
-    flex-basis 0.3s cubic-bezier(0.2, 0, 0, 1) 0s,
+  min-height: 0;
-    width 0.3s cubic-bezier(0.2, 0, 0, 1) 0s,
+  align-items: stretch;
-    min-width 0.3s cubic-bezier(0.2, 0, 0, 1) 0s,
+  position: relative;
-    max-width 0.3s cubic-bezier(0.2, 0, 0, 1) 0s;
 }
 
-@property --dashboard-splitter-sidebar-size {
+.adaptive-splitter-vertical {
-  syntax: '<length>';
+  flex-direction: column;
-  inherits: true;
+}
-  initial-value: 80px;
+
+.adaptive-splitter-panel {
+  min-width: 0;
+  min-height: 0;
+}
+
+.adaptive-splitter-bar {
+  flex: none;
+  position: relative;
+  z-index: 2;
+  user-select: none;
+  touch-action: none;
+}
+
+.adaptive-splitter-horizontal > .adaptive-splitter-bar {
+  width: 0;
+}
+
+.adaptive-splitter-vertical > .adaptive-splitter-bar {
+  height: 0;
+}
+
+.adaptive-splitter-bar-dragger {
+  position: absolute;
+  z-index: 1;
+  background: transparent;
+}
+
+.adaptive-splitter-horizontal
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-dragger {
+  top: 0;
+  bottom: 0;
+  left: 50%;
+  width: 6px;
+  transform: translateX(-50%);
+  cursor: col-resize;
+}
+
+.adaptive-splitter-vertical
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-dragger {
+  left: 0;
+  right: 0;
+  top: 50%;
+  height: 6px;
+  transform: translateY(-50%);
+  cursor: row-resize;
+}
+
+.adaptive-splitter-bar-dragger::before {
+  content: '';
+  position: absolute;
+  inset: 0;
+  margin: auto;
+}
+
+.adaptive-splitter-horizontal
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-dragger::before {
+  width: 2px;
+  height: 100%;
+  background: var(--ant-color-split, rgba(5, 5, 5, 0.06));
+}
+
+.adaptive-splitter-vertical
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-dragger::before {
+  height: 2px;
+  width: 100%;
+  background: var(--ant-color-split, rgba(5, 5, 5, 0.06));
+}
+
+.adaptive-splitter-bar-dragger::after {
+  content: '';
+  position: absolute;
+  inset: 0;
+  margin: auto;
+  background: var(--ant-color-text-quaternary, rgba(0, 0, 0, 0.25));
+  opacity: 0.35;
+}
+
+.adaptive-splitter-horizontal
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-dragger::after {
+  width: 2px;
+  height: 20px;
+}
+
+.adaptive-splitter-vertical
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-dragger::after {
+  height: 2px;
+  width: 20px;
+}
+
+.adaptive-splitter-bar.is-active .adaptive-splitter-bar-dragger::before,
+.adaptive-splitter-bar-dragger:hover::before {
+  background: var(--ant-color-primary-border-hover, #4096ff);
+}
+
+.adaptive-splitter-bar-collapse {
+  position: absolute;
+  z-index: 2;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 16px;
+  height: 16px;
+  padding: 0;
+  border: none;
+  border-radius: 4px;
+  background: transparent;
+  color: var(--ant-color-text-secondary, rgba(0, 0, 0, 0.45));
+  cursor: pointer;
+}
+
+.adaptive-splitter-horizontal
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-collapse {
+  top: 50%;
+  transform: translateY(-50%);
+}
+
+.adaptive-splitter-horizontal
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-collapse-start {
+  left: -18px;
+}
+
+.adaptive-splitter-horizontal
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-collapse-end {
+  right: -18px;
+}
+
+.adaptive-splitter-bar-preview {
+  position: absolute;
+  z-index: 3;
+  pointer-events: none;
+  background: var(--ant-color-primary, #1677ff);
+  opacity: 0.45;
+}
+
+.adaptive-splitter-horizontal
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-preview {
+  top: 0;
+  bottom: 0;
+  width: 2px;
+}
+
+.adaptive-splitter-vertical
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-preview {
+  left: 0;
+  right: 0;
+  height: 2px;
+}
+
+.adaptive-splitter.is-dragging {
+  user-select: none;
+}
+
+.adaptive-splitter.is-dragging.adaptive-splitter-horizontal,
+.adaptive-splitter.is-dragging.adaptive-splitter-horizontal * {
+  cursor: col-resize !important;
+}
+
+.adaptive-splitter.is-dragging.adaptive-splitter-vertical,
+.adaptive-splitter.is-dragging.adaptive-splitter-vertical * {
+  cursor: row-resize !important;
+}
+
+.adaptive-splitter-mask {
+  position: absolute;
+  inset: 0;
+  z-index: 10;
+  pointer-events: none;
+}
+
+.adaptive-splitter.is-ready:not(.is-dragging) > .adaptive-splitter-panel,
+.adaptive-splitter.is-size-transitioning > .adaptive-splitter-panel,
+.farmcontrol-splitter.is-size-transitioning > .ant-splitter-panel,
+.farmcontrol-splitter.is-size-transitioning > .adaptive-splitter-panel {
+  transition:
+    flex-basis var(--adaptive-splitter-size-transition, 0.3s)
+      cubic-bezier(0.2, 0, 0, 1),
+    width var(--adaptive-splitter-size-transition, 0.3s)
+      cubic-bezier(0.2, 0, 0, 1),
+    min-width var(--adaptive-splitter-size-transition, 0.3s)
+      cubic-bezier(0.2, 0, 0, 1),
+    max-width var(--adaptive-splitter-size-transition, 0.3s)
+      cubic-bezier(0.2, 0, 0, 1),
+    height var(--adaptive-splitter-size-transition, 0.3s)
+      cubic-bezier(0.2, 0, 0, 1),
+    min-height var(--adaptive-splitter-size-transition, 0.3s)
+      cubic-bezier(0.2, 0, 0, 1),
+    max-height var(--adaptive-splitter-size-transition, 0.3s)
+      cubic-bezier(0.2, 0, 0, 1);
 }
 
 .farmcontrol-splitter
@@ -1643,41 +1823,34 @@ span.ant-skeleton-input.ant-skeleton-input-sm.text-skeleton {
   stroke-width: 8px;
 }
 
-.dashboard-splitter.farmcontrol-splitter > .ant-splitter-bar {
+.dashboard-splitter.farmcontrol-splitter > .ant-splitter-bar,
+.dashboard-splitter.farmcontrol-splitter > .adaptive-splitter-bar {
   margin: 0;
 }
 
-.dashboard-splitter.farmcontrol-splitter > .ant-splitter-panel {
+.dashboard-splitter.farmcontrol-splitter > .ant-splitter-panel,
+.dashboard-splitter.farmcontrol-splitter > .adaptive-splitter-panel {
   padding: 0;
 }
 
 .dashboard-splitter.farmcontrol-splitter
   > .ant-splitter-bar
-  .ant-splitter-bar-dragger::before {
+  .ant-splitter-bar-dragger::before,
+.dashboard-splitter.farmcontrol-splitter
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-dragger::before {
   background: transparent;
 }
 
 .dashboard-splitter.farmcontrol-splitter
   > .ant-splitter-bar
-  .ant-splitter-bar-dragger::after {
+  .ant-splitter-bar-dragger::after,
+.dashboard-splitter.farmcontrol-splitter
+  > .adaptive-splitter-bar
+  .adaptive-splitter-bar-dragger::after {
   content: none;
 }
 
-.dashboard-splitter.farmcontrol-splitter
-  .ant-splitter-panel.dashboard-splitter-content-panel {
-  flex-grow: 1 !important;
-}
-
-.dashboard-splitter.farmcontrol-splitter
-  .ant-splitter-panel.dashboard-splitter-sidebar-panel.is-collapsed {
-  flex-grow: 0 !important;
-  flex-shrink: 0 !important;
-  flex-basis: var(--dashboard-splitter-sidebar-size) !important;
-  width: var(--dashboard-splitter-sidebar-size) !important;
-  min-width: var(--dashboard-splitter-sidebar-size) !important;
-  max-width: var(--dashboard-splitter-sidebar-size) !important;
-}
-
 .object-display-tag
   .elipsis-text-wrapper.ant-typography
   code.elipsis-text-measure,

src/components/Dashboard/common/AdaptiveSplitter.jsx

@@ -0,0 +1,981 @@
+import {
+  Children,
+  isValidElement,
+  useCallback,
+  useEffect,
+  useLayoutEffect,
+  useMemo,
+  useRef,
+  useState
+} from 'react'
+import PropTypes from 'prop-types'
+import {
+  DownOutlined,
+  LeftOutlined,
+  RightOutlined,
+  UpOutlined
+} from '@ant-design/icons'
+
+const SIZE_TRANSITION_MS = 300
+const DEFAULT_EXPAND_DRAG_PX = 10
+const KEYBOARD_STEP_PX = 8
+
+const sizeType = PropTypes.oneOfType([PropTypes.number, PropTypes.string])
+
+const AdaptiveSplitterPanel = () => null
+AdaptiveSplitterPanel.displayName = 'AdaptiveSplitterPanel'
+AdaptiveSplitterPanel.isAdaptiveSplitterPanel = true
+AdaptiveSplitterPanel.propTypes = {
+  children: PropTypes.node,
+  className: PropTypes.string,
+  style: PropTypes.object,
+  size: sizeType,
+  defaultSize: sizeType,
+  min: sizeType,
+  max: sizeType,
+  resizable: PropTypes.bool,
+  collapsible: PropTypes.oneOfType([
+    PropTypes.bool,
+    PropTypes.shape({
+      start: PropTypes.bool,
+      end: PropTypes.bool
+    })
+  ]),
+  collapsed: PropTypes.bool,
+  collapsedSize: PropTypes.number,
+  collapseThreshold: PropTypes.number,
+  expandDragPx: PropTypes.number,
+  expandedSize: PropTypes.number,
+  onCollapse: PropTypes.func
+}
+
+const parseSizeToPx = (size, containerSize) => {
+  if (size == null || size === '') return null
+  if (typeof size === 'number') {
+    return Number.isFinite(size) ? size : null
+  }
+  const value = String(size).trim()
+  if (value.endsWith('%')) {
+    const pct = Number.parseFloat(value)
+    return Number.isFinite(pct) ? (pct / 100) * containerSize : null
+  }
+  const px = Number.parseFloat(value)
+  return Number.isFinite(px) ? px : null
+}
+
+const clamp = (value, min, max) => Math.min(max, Math.max(min, value))
+
+const getPanelItems = (children) =>
+  Children.toArray(children)
+    .filter(
+      (child) =>
+        isValidElement(child) &&
+        (child.type === AdaptiveSplitterPanel ||
+          child.type?.isAdaptiveSplitterPanel)
+    )
+    .map((child) => ({
+      ...child.props,
+      key: child.key
+    }))
+
+const getCollapsibleSides = (collapsible) => {
+  if (!collapsible) return { start: false, end: false }
+  if (collapsible === true) return { start: true, end: true }
+  return {
+    start: !!collapsible.start,
+    end: !!collapsible.end
+  }
+}
+
+const getBarEdge = (sizes, barIndex) => {
+  if (barIndex < 0) return 0
+  let edge = 0
+  for (let i = 0; i <= barIndex; i += 1) {
+    edge += sizes[i] || 0
+  }
+  return edge
+}
+
+const SplitBar = ({
+  active,
+  resizable,
+  isVertical,
+  lazy,
+  lazyOffset,
+  ariaNow,
+  ariaMin,
+  ariaMax,
+  startCollapsible,
+  endCollapsible,
+  onPointerDown,
+  onKeyDown,
+  onCollapseStart,
+  onCollapseEnd
+}) => {
+  const startIcon = isVertical ? <UpOutlined /> : <LeftOutlined />
+  const endIcon = isVertical ? <DownOutlined /> : <RightOutlined />
+
+  return (
+    <div
+      className={[
+        'adaptive-splitter-bar',
+        'ant-splitter-bar',
+        active ? 'is-active' : '',
+        resizable ? '' : 'is-disabled'
+      ]
+        .filter(Boolean)
+        .join(' ')}
+    >
+      {lazy && active && (
+        <div
+          className='adaptive-splitter-bar-preview ant-splitter-bar-preview'
+          style={{
+            [isVertical ? 'top' : 'left']: '50%',
+            transform: isVertical
+              ? `translate(-50%, calc(-50% + ${lazyOffset}px))`
+              : `translate(calc(-50% + ${lazyOffset}px), -50%)`
+          }}
+        />
+      )}
+      <div
+        role='separator'
+        tabIndex={resizable ? 0 : -1}
+        aria-orientation={isVertical ? 'horizontal' : 'vertical'}
+        aria-valuenow={Math.round(ariaNow || 0)}
+        aria-valuemin={Math.round(ariaMin || 0)}
+        aria-valuemax={
+          Number.isFinite(ariaMax) ? Math.round(ariaMax) : undefined
+        }
+        className={[
+          'adaptive-splitter-bar-dragger',
+          'ant-splitter-bar-dragger',
+          active ? 'ant-splitter-bar-dragger-active' : '',
+          resizable ? '' : 'ant-splitter-bar-dragger-disabled'
+        ]
+          .filter(Boolean)
+          .join(' ')}
+        onPointerDown={resizable ? onPointerDown : undefined}
+        onKeyDown={resizable ? onKeyDown : undefined}
+      />
+      {startCollapsible && (
+        <button
+          type='button'
+          className='adaptive-splitter-bar-collapse adaptive-splitter-bar-collapse-start ant-splitter-bar-collapse-bar ant-splitter-bar-collapse-bar-start'
+          aria-label='Collapse start panel'
+          onPointerDown={(event) => event.stopPropagation()}
+          onClick={onCollapseStart}
+        >
+          {startIcon}
+        </button>
+      )}
+      {endCollapsible && (
+        <button
+          type='button'
+          className='adaptive-splitter-bar-collapse adaptive-splitter-bar-collapse-end ant-splitter-bar-collapse-bar ant-splitter-bar-collapse-bar-end'
+          aria-label='Collapse end panel'
+          onPointerDown={(event) => event.stopPropagation()}
+          onClick={onCollapseEnd}
+        >
+          {endIcon}
+        </button>
+      )}
+    </div>
+  )
+}
+
+SplitBar.propTypes = {
+  active: PropTypes.bool,
+  resizable: PropTypes.bool,
+  isVertical: PropTypes.bool,
+  lazy: PropTypes.bool,
+  lazyOffset: PropTypes.number,
+  ariaNow: PropTypes.number,
+  ariaMin: PropTypes.number,
+  ariaMax: PropTypes.number,
+  startCollapsible: PropTypes.bool,
+  endCollapsible: PropTypes.bool,
+  onPointerDown: PropTypes.func,
+  onKeyDown: PropTypes.func,
+  onCollapseStart: PropTypes.func,
+  onCollapseEnd: PropTypes.func
+}
+
+const AdaptiveSplitter = ({
+  children,
+  className = '',
+  style,
+  layout,
+  orientation,
+  vertical = false,
+  lazy = false,
+  onResizeStart,
+  onResize,
+  onResizeEnd,
+  onCollapse,
+  sizeTransitionMs = SIZE_TRANSITION_MS
+}) => {
+  const isVertical =
+    orientation === 'vertical' || layout === 'vertical' || vertical
+  const items = useMemo(() => getPanelItems(children), [children])
+
+  const containerRef = useRef(null)
+  const [containerSize, setContainerSize] = useState(0)
+  const [pxSizes, setPxSizes] = useState([])
+  const [dragging, setDragging] = useState(false)
+  const [activeBar, setActiveBar] = useState(null)
+  const [sizeTransitioning, setSizeTransitioning] = useState(false)
+  const [ready, setReady] = useState(false)
+  const [lazyOffset, setLazyOffset] = useState(0)
+
+  const pxSizesRef = useRef(pxSizes)
+  pxSizesRef.current = pxSizes
+  const itemsRef = useRef(items)
+  itemsRef.current = items
+  const containerSizeRef = useRef(containerSize)
+  containerSizeRef.current = containerSize
+  const dragRef = useRef(null)
+  const lastExpandedRef = useRef([])
+  const sizeTransitionTimeoutRef = useRef(null)
+  const skipNextTransitionRef = useRef(true)
+  const lazyOffsetRef = useRef(0)
+  const pendingAnimateSizesRef = useRef(null)
+  const animateRafRef = useRef([])
+
+  const getItemMin = useCallback((item, fallback = 0) => {
+    const parsed = parseSizeToPx(item?.min, containerSizeRef.current)
+    return parsed ?? fallback
+  }, [])
+
+  const getItemMax = useCallback((item, fallback = Infinity) => {
+    const parsed = parseSizeToPx(item?.max, containerSizeRef.current)
+    return parsed ?? fallback
+  }, [])
+
+  const rememberExpandedSize = useCallback((size, index, item) => {
+    if (!item || item.collapsed) return
+    if (item.collapseThreshold != null && size < item.collapseThreshold) return
+    lastExpandedRef.current[index] = size
+  }, [])
+
+  const resolveExpandedSize = useCallback(
+    (index, item) => {
+      if (item?.expandedSize != null) return item.expandedSize
+      if (lastExpandedRef.current[index] != null) {
+        return lastExpandedRef.current[index]
+      }
+      const fromDefault = parseSizeToPx(
+        item?.defaultSize,
+        containerSizeRef.current
+      )
+      if (fromDefault != null) return fromDefault
+      const max = getItemMax(item)
+      if (Number.isFinite(max)) return max
+      return item?.collapsedSize ?? 0
+    },
+    [getItemMax]
+  )
+
+  const applyBarResize = useCallback(
+    (sizes, barIndex, nextStartSize) => {
+      const currentItems = itemsRef.current
+      const startItem = currentItems[barIndex]
+      const endItem = currentItems[barIndex + 1]
+      if (!startItem || !endItem) return sizes
+
+      const next = sizes.slice()
+      const startMin = getItemMin(startItem)
+      const startMax = getItemMax(startItem)
+      const endMin = getItemMin(endItem)
+      const endMax = getItemMax(endItem)
+      const oldStart = next[barIndex]
+      const oldEnd = next[barIndex + 1]
+      const pairTotal = oldStart + oldEnd
+
+      let startSize = clamp(nextStartSize, startMin, startMax)
+      let endSize = pairTotal - startSize
+
+      if (endSize < endMin) {
+        endSize = endMin
+        startSize = pairTotal - endMin
+      } else if (endSize > endMax) {
+        endSize = endMax
+        startSize = pairTotal - endMax
+      }
+
+      startSize = clamp(startSize, startMin, startMax)
+      next[barIndex] = startSize
+      next[barIndex + 1] = pairTotal - startSize
+      return next
+    },
+    [getItemMax, getItemMin]
+  )
+
+  const emitCollapse = useCallback(
+    (index, collapsed, sizes) => {
+      itemsRef.current[index]?.onCollapse?.(collapsed)
+      onCollapse?.(
+        itemsRef.current.map((panel, panelIndex) =>
+          panelIndex === index ? collapsed : !!panel.collapsed
+        ),
+        sizes
+      )
+    },
+    [onCollapse]
+  )
+
+  const remapDragOrigin = useCallback((pointerPos, edge) => {
+    const drag = dragRef.current
+    if (!drag) return
+    drag.originOffset = pointerPos - edge
+    drag.lastPointerPos = pointerPos
+  }, [])
+
+  const endDragSession = useCallback(() => {
+    const drag = dragRef.current
+    if (drag?.captureTarget?.hasPointerCapture?.(drag.pointerId)) {
+      drag.captureTarget.releasePointerCapture(drag.pointerId)
+    }
+    dragRef.current = null
+    lazyOffsetRef.current = 0
+    setLazyOffset(0)
+    setDragging(false)
+    setActiveBar(null)
+  }, [])
+
+  const cancelPendingAnimate = useCallback(() => {
+    animateRafRef.current.forEach((id) => cancelAnimationFrame(id))
+    animateRafRef.current = []
+    pendingAnimateSizesRef.current = null
+  }, [])
+
+  const startSizeTransition = useCallback(() => {
+    setSizeTransitioning(true)
+    if (sizeTransitionTimeoutRef.current) {
+      clearTimeout(sizeTransitionTimeoutRef.current)
+    }
+    sizeTransitionTimeoutRef.current = setTimeout(() => {
+      setSizeTransitioning(false)
+      sizeTransitionTimeoutRef.current = null
+    }, sizeTransitionMs)
+  }, [sizeTransitionMs])
+
+  const scheduleAnimatedSizes = useCallback(
+    (nextSizes) => {
+      startSizeTransition()
+      cancelPendingAnimate()
+      pendingAnimateSizesRef.current = nextSizes
+      const ids = []
+      ids.push(
+        requestAnimationFrame(() => {
+          ids.push(
+            requestAnimationFrame(() => {
+              animateRafRef.current = []
+              const pending = pendingAnimateSizesRef.current
+              pendingAnimateSizesRef.current = null
+              if (pending) setPxSizes(pending)
+            })
+          )
+        })
+      )
+      animateRafRef.current = ids
+    },
+    [cancelPendingAnimate, startSizeTransition]
+  )
+
+  const measureContainer = useCallback(() => {
+    const node = containerRef.current
+    if (!node) return
+    const next = isVertical ? node.clientHeight : node.clientWidth
+    if (next !== containerSizeRef.current) {
+      setContainerSize(next)
+    }
+  }, [isVertical])
+
+  useLayoutEffect(() => {
+    measureContainer()
+    const node = containerRef.current
+    if (!node || typeof ResizeObserver === 'undefined') return undefined
+    const observer = new ResizeObserver(() => measureContainer())
+    observer.observe(node)
+    return () => observer.disconnect()
+  }, [measureContainer])
+
+  useEffect(() => {
+    const id = requestAnimationFrame(() => setReady(true))
+    return () => cancelAnimationFrame(id)
+  }, [])
+
+  const deriveSizes = useCallback(() => {
+    if (!containerSize || !items.length) return []
+
+    const parsed = items.map((item) => {
+      if (item.collapsed && item.collapsedSize != null && item.size == null) {
+        return item.collapsedSize
+      }
+      return parseSizeToPx(item.size ?? item.defaultSize, containerSize)
+    })
+
+    const knownSum = parsed.reduce(
+      (sum, size) => sum + (size == null ? 0 : size),
+      0
+    )
+    const unknownCount = parsed.filter((size) => size == null).length
+    const leftover = Math.max(0, containerSize - knownSum)
+    const unknownShare = unknownCount ? leftover / unknownCount : 0
+
+    return parsed.map((size, index) => {
+      const item = items[index]
+      const next = size == null ? unknownShare : size
+      const min = getItemMin(item)
+      const max = getItemMax(item)
+      const clamped = clamp(next, min, Number.isFinite(max) ? max : next)
+      rememberExpandedSize(clamped, index, item)
+      return clamped
+    })
+  }, [containerSize, getItemMax, getItemMin, items, rememberExpandedSize])
+
+  useLayoutEffect(() => {
+    const nextSizes = deriveSizes()
+    if (!nextSizes.length) return
+
+    const drag = dragRef.current
+    const prev = pxSizesRef.current
+    const sameLength = prev.length === nextSizes.length
+    const changed =
+      !sameLength || nextSizes.some((size, index) => size !== prev[index])
+
+    if (drag && sameLength && changed && drag.lastPointerPos != null) {
+      remapDragOrigin(drag.lastPointerPos, getBarEdge(nextSizes, drag.barIndex))
+      skipNextTransitionRef.current = true
+    }
+
+    const shouldAnimate =
+      changed &&
+      !drag &&
+      sameLength &&
+      !skipNextTransitionRef.current &&
+      prev.length
+
+    skipNextTransitionRef.current = false
+
+    if (shouldAnimate) {
+      scheduleAnimatedSizes(nextSizes)
+      return
+    }
+
+    if (changed) {
+      cancelPendingAnimate()
+      setPxSizes(nextSizes)
+    }
+  }, [
+    cancelPendingAnimate,
+    deriveSizes,
+    remapDragOrigin,
+    scheduleAnimatedSizes
+  ])
+
+  useEffect(
+    () => () => {
+      if (sizeTransitionTimeoutRef.current) {
+        clearTimeout(sizeTransitionTimeoutRef.current)
+      }
+      animateRafRef.current.forEach((id) => cancelAnimationFrame(id))
+    },
+    []
+  )
+
+  const getPointerPos = useCallback(
+    (event) => {
+      const node = containerRef.current
+      if (!node) return 0
+      const rect = node.getBoundingClientRect()
+      return isVertical ? event.clientY - rect.top : event.clientX - rect.left
+    },
+    [isVertical]
+  )
+
+  const commitSizes = useCallback(
+    (nextSizes, { notify = true, end = false } = {}) => {
+      cancelPendingAnimate()
+      setPxSizes(nextSizes)
+      nextSizes.forEach((size, index) =>
+        rememberExpandedSize(size, index, itemsRef.current[index])
+      )
+      if (!notify) return
+      if (end) onResizeEnd?.(nextSizes)
+      else onResize?.(nextSizes)
+    },
+    [cancelPendingAnimate, onResize, onResizeEnd, rememberExpandedSize]
+  )
+
+  const resolveDragSize = useCallback(
+    (barIndex, pointerPos, originOffset, currentSizes) => {
+      const item = itemsRef.current[barIndex]
+      const drag = dragRef.current
+      const collapsed =
+        drag?.barIndex === barIndex ? drag.collapsed : !!item?.collapsed
+      const rawEdge = pointerPos - originOffset
+      const startSize = rawEdge - getBarEdge(currentSizes, barIndex - 1)
+
+      const collapsedSize = item?.collapsedSize ?? getItemMin(item)
+      const expandDragPx = item?.expandDragPx ?? DEFAULT_EXPAND_DRAG_PX
+      const collapseThreshold = item?.collapseThreshold
+
+      if (collapsed) {
+        const preview = Math.max(collapsedSize, startSize)
+        if (preview - collapsedSize > expandDragPx) {
+          return {
+            expand: true,
+            collapse: false,
+            startSize: preview
+          }
+        }
+        return {
+          expand: false,
+          collapse: false,
+          startSize: preview
+        }
+      }
+
+      if (drag?.blockCollapse) {
+        if (startSize <= collapsedSize + expandDragPx) {
+          return {
+            expand: false,
+            collapse: true,
+            startSize: collapsedSize
+          }
+        }
+        if (collapseThreshold != null && startSize >= collapseThreshold) {
+          drag.blockCollapse = false
+        }
+        return {
+          expand: false,
+          collapse: false,
+          startSize: Math.max(startSize, collapsedSize)
+        }
+      }
+
+      if (collapseThreshold != null && startSize < collapseThreshold) {
+        return {
+          expand: false,
+          collapse: true,
+          startSize: collapsedSize
+        }
+      }
+
+      return {
+        expand: false,
+        collapse: false,
+        startSize
+      }
+    },
+    [getItemMin]
+  )
+
+  const handlePointerMove = useCallback(
+    (event) => {
+      const drag = dragRef.current
+      if (!drag || event.pointerId !== drag.pointerId) return
+
+      const pointerPos = getPointerPos(event)
+      drag.lastPointerPos = pointerPos
+      const currentSizes = pxSizesRef.current
+      const resolved = resolveDragSize(
+        drag.barIndex,
+        pointerPos,
+        drag.originOffset,
+        currentSizes
+      )
+
+      if (lazy) {
+        const startEdge = getBarEdge(drag.startSizes, drag.barIndex)
+        const nextOffset =
+          getBarEdge(
+            applyBarResize(drag.startSizes, drag.barIndex, resolved.startSize),
+            drag.barIndex
+          ) - startEdge
+        lazyOffsetRef.current = nextOffset
+        setLazyOffset(nextOffset)
+        return
+      }
+
+      const nextSizes = applyBarResize(
+        currentSizes,
+        drag.barIndex,
+        resolved.startSize
+      )
+
+      if (resolved.expand) {
+        drag.collapsed = false
+        drag.blockCollapse = true
+        skipNextTransitionRef.current = true
+        remapDragOrigin(pointerPos, getBarEdge(nextSizes, drag.barIndex))
+        emitCollapse(drag.barIndex, false, nextSizes)
+        commitSizes(nextSizes)
+        return
+      }
+
+      if (resolved.collapse) {
+        const barIndex = drag.barIndex
+        endDragSession()
+        emitCollapse(barIndex, true, nextSizes)
+        onResizeEnd?.(nextSizes)
+        return
+      }
+
+      commitSizes(nextSizes)
+    },
+    [
+      applyBarResize,
+      commitSizes,
+      emitCollapse,
+      getPointerPos,
+      lazy,
+      endDragSession,
+      onResizeEnd,
+      remapDragOrigin,
+      resolveDragSize
+    ]
+  )
+
+  const stopDragging = useCallback(
+    (event) => {
+      const drag = dragRef.current
+      if (!drag || (event && event.pointerId !== drag.pointerId)) return
+
+      let nextSizes = pxSizesRef.current.slice()
+
+      if (lazy) {
+        const pointerPos = event ? getPointerPos(event) : drag.lastPointerPos
+        const resolved = resolveDragSize(
+          drag.barIndex,
+          pointerPos,
+          drag.originOffset,
+          drag.startSizes
+        )
+        nextSizes = applyBarResize(
+          drag.startSizes,
+          drag.barIndex,
+          resolved.startSize
+        )
+        if (resolved.expand) {
+          drag.collapsed = false
+          drag.blockCollapse = true
+          emitCollapse(drag.barIndex, false, nextSizes)
+        }
+        if (resolved.collapse) {
+          drag.collapsed = true
+          drag.blockCollapse = false
+          emitCollapse(drag.barIndex, true, nextSizes)
+        }
+      }
+
+      const item = itemsRef.current[drag.barIndex]
+      const collapsed = drag.collapsed ?? item?.collapsed
+      if (collapsed) {
+        const collapsedSize = item.collapsedSize ?? getItemMin(item)
+        if (nextSizes[drag.barIndex] !== collapsedSize) {
+          nextSizes = applyBarResize(nextSizes, drag.barIndex, collapsedSize)
+        }
+      }
+
+      endDragSession()
+      skipNextTransitionRef.current = true
+      commitSizes(nextSizes, { end: true })
+    },
+    [
+      applyBarResize,
+      commitSizes,
+      emitCollapse,
+      endDragSession,
+      getItemMin,
+      getPointerPos,
+      lazy,
+      resolveDragSize
+    ]
+  )
+
+  const startDragging = useCallback(
+    (barIndex, event) => {
+      const item = itemsRef.current[barIndex]
+      const nextItem = itemsRef.current[barIndex + 1]
+      if (
+        !pxSizesRef.current.length ||
+        item?.resizable === false ||
+        nextItem?.resizable === false
+      ) {
+        return
+      }
+
+      event.preventDefault()
+      event.stopPropagation()
+      event.currentTarget.setPointerCapture?.(event.pointerId)
+
+      const pointerPos = getPointerPos(event)
+      const startSizes = pxSizesRef.current.slice()
+
+      dragRef.current = {
+        barIndex,
+        pointerId: event.pointerId,
+        captureTarget: event.currentTarget,
+        originOffset: pointerPos - getBarEdge(startSizes, barIndex),
+        lastPointerPos: pointerPos,
+        startSizes,
+        collapsed: !!item.collapsed,
+        blockCollapse: false
+      }
+      skipNextTransitionRef.current = true
+      setSizeTransitioning(false)
+      setDragging(true)
+      setActiveBar(barIndex)
+      onResizeStart?.(startSizes)
+    },
+    [getPointerPos, onResizeStart]
+  )
+
+  useEffect(() => {
+    if (!dragging) return undefined
+    window.addEventListener('pointermove', handlePointerMove)
+    window.addEventListener('pointerup', stopDragging)
+    window.addEventListener('pointercancel', stopDragging)
+    return () => {
+      window.removeEventListener('pointermove', handlePointerMove)
+      window.removeEventListener('pointerup', stopDragging)
+      window.removeEventListener('pointercancel', stopDragging)
+    }
+  }, [dragging, handlePointerMove, stopDragging])
+
+  const collapseViaControl = useCallback(
+    (barIndex, side) => {
+      const itemIndex = side === 'start' ? barIndex : barIndex + 1
+      const item = itemsRef.current[itemIndex]
+      if (!item) return
+
+      const collapsedSize = item.collapsedSize ?? getItemMin(item)
+      const current = pxSizesRef.current[itemIndex]
+      const alreadyCollapsed =
+        item.collapsed ||
+        (item.collapseThreshold != null
+          ? current < item.collapseThreshold
+          : current <= collapsedSize + 1)
+      const restored = resolveExpandedSize(itemIndex, item)
+      let nextStartSize
+
+      if (side === 'start') {
+        nextStartSize = alreadyCollapsed ? restored : collapsedSize
+      } else {
+        const neighbor = pxSizesRef.current[barIndex]
+        const nextPanelSize = alreadyCollapsed ? restored : collapsedSize
+        nextStartSize = neighbor + (current - nextPanelSize)
+      }
+
+      if (!alreadyCollapsed) {
+        rememberExpandedSize(current, itemIndex, item)
+      }
+
+      const nextSizes = applyBarResize(
+        pxSizesRef.current,
+        barIndex,
+        nextStartSize
+      )
+      emitCollapse(itemIndex, !alreadyCollapsed, nextSizes)
+    },
+    [
+      applyBarResize,
+      emitCollapse,
+      getItemMin,
+      rememberExpandedSize,
+      resolveExpandedSize
+    ]
+  )
+
+  const handleBarKeyDown = useCallback(
+    (barIndex, event) => {
+      const backward = isVertical
+        ? event.key === 'ArrowUp'
+        : event.key === 'ArrowLeft'
+      const forward = isVertical
+        ? event.key === 'ArrowDown'
+        : event.key === 'ArrowRight'
+      if (!backward && !forward) return
+
+      event.preventDefault()
+      const delta = forward ? KEYBOARD_STEP_PX : -KEYBOARD_STEP_PX
+      const item = itemsRef.current[barIndex]
+      const proposed = pxSizesRef.current[barIndex] + delta
+      const collapsedSize = item?.collapsedSize ?? getItemMin(item)
+      const expandDragPx = item?.expandDragPx ?? DEFAULT_EXPAND_DRAG_PX
+
+      if (
+        item?.collapseThreshold != null &&
+        proposed < item.collapseThreshold &&
+        !item.collapsed
+      ) {
+        rememberExpandedSize(pxSizesRef.current[barIndex], barIndex, item)
+        const collapsedSizes = applyBarResize(
+          pxSizesRef.current,
+          barIndex,
+          collapsedSize
+        )
+        emitCollapse(barIndex, true, collapsedSizes)
+        commitSizes(collapsedSizes, { end: true })
+        return
+      }
+
+      if (item?.collapsed && proposed - collapsedSize > expandDragPx) {
+        const expandedSizes = applyBarResize(
+          pxSizesRef.current,
+          barIndex,
+          resolveExpandedSize(barIndex, item)
+        )
+        emitCollapse(barIndex, false, expandedSizes)
+        commitSizes(expandedSizes, { end: true })
+        return
+      }
+
+      commitSizes(applyBarResize(pxSizesRef.current, barIndex, proposed), {
+        end: true
+      })
+    },
+    [
+      applyBarResize,
+      commitSizes,
+      emitCollapse,
+      getItemMin,
+      isVertical,
+      rememberExpandedSize,
+      resolveExpandedSize
+    ]
+  )
+
+  const orientationClass = isVertical ? 'vertical' : 'horizontal'
+  const rootClassName = [
+    'adaptive-splitter',
+    'ant-splitter',
+    `adaptive-splitter-${orientationClass}`,
+    `ant-splitter-${orientationClass}`,
+    ready ? 'is-ready' : '',
+    sizeTransitioning ? 'is-size-transitioning' : '',
+    dragging ? 'is-dragging' : '',
+    className
+  ]
+    .filter(Boolean)
+    .join(' ')
+
+  return (
+    <div
+      ref={containerRef}
+      className={rootClassName}
+      style={{
+        '--adaptive-splitter-size-transition': `${sizeTransitionMs}ms`,
+        ...style
+      }}
+    >
+      {items.flatMap((item, index) => {
+        const size = pxSizes[index] ?? 0
+        const isFill =
+          item.size == null &&
+          item.defaultSize == null &&
+          !item.collapsed &&
+          index === items.length - 1
+        const minPx = getItemMin(item)
+        const maxPx = getItemMax(item)
+        const panelStyle = isFill
+          ? {
+              flex: '1 1 auto',
+              minWidth: isVertical ? 0 : minPx,
+              minHeight: isVertical ? minPx : 0,
+              overflow: 'auto',
+              ...item.style
+            }
+          : {
+              flex: `0 0 ${size}px`,
+              [isVertical ? 'height' : 'width']: size,
+              minWidth: isVertical ? undefined : minPx,
+              maxWidth:
+                isVertical || !Number.isFinite(maxPx) ? undefined : maxPx,
+              minHeight: isVertical ? minPx : undefined,
+              maxHeight:
+                !isVertical || !Number.isFinite(maxPx) ? undefined : maxPx,
+              overflow: 'auto',
+              ...item.style
+            }
+
+        const collapsible = getCollapsibleSides(item.collapsible)
+        const nextCollapsible = getCollapsibleSides(
+          items[index + 1]?.collapsible
+        )
+        const showBar = index < items.length - 1
+        const barResizable =
+          item.resizable !== false && items[index + 1]?.resizable !== false
+
+        const nodes = [
+          <div
+            key={item.key ?? `adaptive-splitter-panel-${index}`}
+            className={[
+              'adaptive-splitter-panel',
+              'ant-splitter-panel',
+              item.collapsed ? 'is-collapsed' : '',
+              item.className
+            ]
+              .filter(Boolean)
+              .join(' ')}
+            style={panelStyle}
+          >
+            {item.children}
+          </div>
+        ]
+
+        if (showBar) {
+          nodes.push(
+            <SplitBar
+              key={`adaptive-splitter-bar-${index}`}
+              active={activeBar === index}
+              resizable={barResizable}
+              isVertical={isVertical}
+              lazy={lazy}
+              lazyOffset={lazyOffset}
+              ariaNow={size}
+              ariaMin={minPx}
+              ariaMax={maxPx}
+              startCollapsible={collapsible.end}
+              endCollapsible={nextCollapsible.start}
+              onPointerDown={(event) => startDragging(index, event)}
+              onKeyDown={(event) => handleBarKeyDown(index, event)}
+              onCollapseStart={() => collapseViaControl(index, 'start')}
+              onCollapseEnd={() => collapseViaControl(index, 'end')}
+            />
+          )
+        }
+
+        return nodes
+      })}
+      {dragging && (
+        <div
+          className='adaptive-splitter-mask ant-splitter-mask'
+          style={{ cursor: isVertical ? 'row-resize' : 'col-resize' }}
+        />
+      )}
+    </div>
+  )
+}
+
+AdaptiveSplitter.Panel = AdaptiveSplitterPanel
+AdaptiveSplitter.SIZE_TRANSITION_MS = SIZE_TRANSITION_MS
+
+AdaptiveSplitter.propTypes = {
+  children: PropTypes.node,
+  className: PropTypes.string,
+  style: PropTypes.object,
+  layout: PropTypes.oneOf(['horizontal', 'vertical']),
+  orientation: PropTypes.oneOf(['horizontal', 'vertical']),
+  vertical: PropTypes.bool,
+  lazy: PropTypes.bool,
+  onResizeStart: PropTypes.func,
+  onResize: PropTypes.func,
+  onResizeEnd: PropTypes.func,
+  onCollapse: PropTypes.func,
+  sizeTransitionMs: PropTypes.number
+}
+
+export default AdaptiveSplitter

src/components/Dashboard/common/DashboardSidebarSplitter.jsx

@@ -3,22 +3,21 @@ import {
   isValidElement,
   useCallback,
   useContext,
-  useEffect,
   useRef,
   useState
 } from 'react'
 import PropTypes from 'prop-types'
-import { Layout, Splitter } from 'antd'
+import { Layout } from 'antd'
 import { useMediaQuery } from 'react-responsive'
 import { ElectronContext } from '../context/ElectronContext'
+import AdaptiveSplitter from './AdaptiveSplitter'
 
-const COLLAPSE_BELOW_PX = 150
+const COLLAPSE_BELOW_PX = 200
 const DEFAULT_SIDEBAR_PX = 300
 const MAX_SIDEBAR_PX = 400
 const COLLAPSED_WIDTH_PX = 80
 const ELECTRON_COLLAPSED_WIDTH_PX = 55
 const EXPAND_DRAG_PX = 10
-const SIZE_TRANSITION_MS = 300
 const COLLAPSE_STORAGE_KEY = 'DashboardSidebar_collapseState'
 const SIZE_STORAGE_KEY = 'DashboardSidebar_width'
 
@@ -56,7 +55,7 @@ const DashboardSidebarSplitter = ({ sidebar, children }) => {
   )
   const [sidebarSize, setSidebarSize] = useState(() => {
     if (readStoredBoolean(COLLAPSE_STORAGE_KEY, false)) {
-      return isElectron ? ELECTRON_COLLAPSED_WIDTH_PX : COLLAPSED_WIDTH_PX
+      return collapsedWidth
     }
     return clampExpandedSize(
       readStoredNumber(SIZE_STORAGE_KEY, DEFAULT_SIDEBAR_PX)
@@ -68,118 +67,6 @@ const DashboardSidebarSplitter = ({ sidebar, children }) => {
   const lastExpandedSizeRef = useRef(
     clampExpandedSize(readStoredNumber(SIZE_STORAGE_KEY, DEFAULT_SIDEBAR_PX))
   )
-  const sidebarSizeRef = useRef(sidebarSize)
-  sidebarSizeRef.current = sidebarSize
-  const collapseSizeRafRef = useRef([])
-  const [sizeTransitioning, setSizeTransitioning] = useState(false)
-  const sizeTransitionTimeoutRef = useRef(null)
-  const [resizeLocked, setResizeLocked] = useState(false)
-  const resizeLockedRef = useRef(false)
-  const suppressGestureRef = useRef(false)
-  const lockUntilPointerUpRef = useRef(false)
-  const lockTimeoutRef = useRef(null)
-  const pointerUnlockRef = useRef(null)
-  const ignoreResizeEndRef = useRef(false)
-
-  const setResizeLockedState = useCallback((locked) => {
-    resizeLockedRef.current = locked
-    setResizeLocked(locked)
-  }, [])
-
-  const clearPointerUnlock = useCallback(() => {
-    if (!pointerUnlockRef.current) return
-    window.removeEventListener('pointerup', pointerUnlockRef.current)
-    window.removeEventListener('pointercancel', pointerUnlockRef.current)
-    pointerUnlockRef.current = null
-  }, [])
-
-  const attachPointerUnlock = useCallback(() => {
-    if (pointerUnlockRef.current) return
-    const handler = () => {
-      clearPointerUnlock()
-      suppressGestureRef.current = false
-      if (lockUntilPointerUpRef.current) {
-        lockUntilPointerUpRef.current = false
-        setResizeLockedState(false)
-      }
-    }
-    pointerUnlockRef.current = handler
-    window.addEventListener('pointerup', handler)
-    window.addEventListener('pointercancel', handler)
-  }, [clearPointerUnlock, setResizeLockedState])
-
-  const startSizeTransition = useCallback(() => {
-    setSizeTransitioning(true)
-    if (sizeTransitionTimeoutRef.current) {
-      clearTimeout(sizeTransitionTimeoutRef.current)
-    }
-    sizeTransitionTimeoutRef.current = setTimeout(() => {
-      setSizeTransitioning(false)
-      sizeTransitionTimeoutRef.current = null
-    }, SIZE_TRANSITION_MS)
-  }, [])
-
-  const cancelCollapseSizeAnimation = useCallback(() => {
-    collapseSizeRafRef.current.forEach((id) => cancelAnimationFrame(id))
-    collapseSizeRafRef.current = []
-  }, [])
-
-  const animateCollapsedSize = useCallback(() => {
-    cancelCollapseSizeAnimation()
-    const ids = []
-    ids.push(
-      requestAnimationFrame(() => {
-        ids.push(
-          requestAnimationFrame(() => {
-            collapseSizeRafRef.current = []
-            setSidebarSize(collapsedWidth)
-          })
-        )
-      })
-    )
-    collapseSizeRafRef.current = ids
-  }, [cancelCollapseSizeAnimation, collapsedWidth])
-
-  const lockResizeUntilPointerUp = useCallback(() => {
-    ignoreResizeEndRef.current = true
-    suppressGestureRef.current = true
-    lockUntilPointerUpRef.current = true
-    setResizeLockedState(true)
-    attachPointerUnlock()
-  }, [attachPointerUnlock, setResizeLockedState])
-
-  const lockResizeFor = useCallback(
-    (ms) => {
-      ignoreResizeEndRef.current = true
-      suppressGestureRef.current = true
-      setResizeLockedState(true)
-      attachPointerUnlock()
-      if (lockTimeoutRef.current) {
-        clearTimeout(lockTimeoutRef.current)
-      }
-      lockTimeoutRef.current = setTimeout(() => {
-        lockTimeoutRef.current = null
-        if (!lockUntilPointerUpRef.current) {
-          setResizeLockedState(false)
-        }
-      }, ms)
-    },
-    [attachPointerUnlock, setResizeLockedState]
-  )
-
-  useEffect(
-    () => () => {
-      if (sizeTransitionTimeoutRef.current) {
-        clearTimeout(sizeTransitionTimeoutRef.current)
-      }
-      if (lockTimeoutRef.current) {
-        clearTimeout(lockTimeoutRef.current)
-      }
-      cancelCollapseSizeAnimation()
-      clearPointerUnlock()
-    },
-    [cancelCollapseSizeAnimation, clearPointerUnlock]
-  )
 
   const persistCollapsed = (nextCollapsed) => {
     sessionStorage.setItem(COLLAPSE_STORAGE_KEY, JSON.stringify(nextCollapsed))
@@ -192,113 +79,73 @@ const DashboardSidebarSplitter = ({ sidebar, children }) => {
   const collapseSidebar = useCallback(
     (expandedSize) => {
       if (expandedSize >= COLLAPSE_BELOW_PX) {
-        lastExpandedSizeRef.current = expandedSize
+        lastExpandedSizeRef.current = clampExpandedSize(expandedSize)
-        persistSize(expandedSize)
+        persistSize(lastExpandedSizeRef.current)
       }
       collapsedRef.current = true
       persistCollapsed(true)
-      startSizeTransition()
-      setSidebarSize(sidebarSizeRef.current)
       setCollapsed(true)
-      animateCollapsedSize()
+      setSidebarSize(collapsedWidth)
     },
-    [animateCollapsedSize, startSizeTransition]
+    [collapsedWidth]
   )
 
   const expandSidebar = useCallback(() => {
-    cancelCollapseSizeAnimation()
     collapsedRef.current = false
     setCollapsed(false)
     persistCollapsed(false)
-    startSizeTransition()
+    const nextSize = clampExpandedSize(lastExpandedSizeRef.current)
-    setSidebarSize(DEFAULT_SIDEBAR_PX)
+    lastExpandedSizeRef.current = nextSize
-    persistSize(DEFAULT_SIDEBAR_PX)
+    setSidebarSize(nextSize)
-    lastExpandedSizeRef.current = DEFAULT_SIDEBAR_PX
+    persistSize(nextSize)
-  }, [cancelCollapseSizeAnimation, startSizeTransition])
+  }, [])
 
   const handleSidebarCollapse = useCallback(
     (nextCollapsed) => {
+      if (nextCollapsed === collapsedRef.current) return
       if (nextCollapsed) {
-        collapseSidebar(sidebarSize)
+        collapseSidebar(lastExpandedSizeRef.current)
       } else {
         expandSidebar()
       }
-      lockResizeFor(SIZE_TRANSITION_MS)
     },
-    [collapseSidebar, expandSidebar, lockResizeFor, sidebarSize]
+    [collapseSidebar, expandSidebar]
   )
 
-  const handleResizeStart = useCallback(() => {
+  const handleSplitterCollapse = useCallback(
-    if (!resizeLockedRef.current) {
+    (nextCollapsed) => {
-      ignoreResizeEndRef.current = false
+      if (nextCollapsed === collapsedRef.current) return
+      if (nextCollapsed) {
+        collapseSidebar(lastExpandedSizeRef.current)
+        return
+      }
+      collapsedRef.current = false
+      persistCollapsed(false)
+      setCollapsed(false)
+    },
+    [collapseSidebar]
+  )
+
+  const handleResize = useCallback((sizes) => {
+    const size = sizes[0]
+    setSidebarSize(size)
+    if (!collapsedRef.current && size >= COLLAPSE_BELOW_PX) {
+      lastExpandedSizeRef.current = clampExpandedSize(size)
     }
   }, [])
 
-  const handleResize = useCallback(
-    (sizes) => {
-      if (resizeLockedRef.current || suppressGestureRef.current) {
-        if (collapsedRef.current) {
-          setSidebarSize(collapsedWidth)
-        }
-        return
-      }
-
-      const size = sizes[0]
-
-      if (collapsedRef.current) {
-        if (size - collapsedWidth > EXPAND_DRAG_PX) {
-          expandSidebar()
-          lockResizeUntilPointerUp()
-          return
-        }
-        setSidebarSize(Math.max(collapsedWidth, size))
-        return
-      }
-
-      if (size < COLLAPSE_BELOW_PX) {
-        collapseSidebar(lastExpandedSizeRef.current)
-        lockResizeUntilPointerUp()
-        return
-      }
-
-      setSidebarSize(size)
-      lastExpandedSizeRef.current = clampExpandedSize(size)
-    },
-    [collapseSidebar, collapsedWidth, expandSidebar, lockResizeUntilPointerUp]
-  )
-
   const handleResizeEnd = useCallback(
     (sizes) => {
-      if (
-        resizeLockedRef.current ||
-        suppressGestureRef.current ||
-        ignoreResizeEndRef.current
-      ) {
-        ignoreResizeEndRef.current = false
-        if (collapsedRef.current) {
-          startSizeTransition()
-          setSidebarSize(collapsedWidth)
-        }
-        return
-      }
-
       if (collapsedRef.current) {
-        if (sizes[0] - collapsedWidth > EXPAND_DRAG_PX) {
+        setSidebarSize(collapsedWidth)
-          expandSidebar()
-          lockResizeFor(SIZE_TRANSITION_MS)
-        } else {
-          startSizeTransition()
-          setSidebarSize(collapsedWidth)
-        }
         return
       }
-
       const next = clampExpandedSize(sizes[0])
       lastExpandedSizeRef.current = next
       setSidebarSize(next)
       persistSize(next)
     },
-    [collapsedWidth, expandSidebar, lockResizeFor, startSizeTransition]
+    [collapsedWidth]
   )
 
   const sidebarNode = isValidElement(sidebar)
@@ -320,38 +167,38 @@ const DashboardSidebarSplitter = ({ sidebar, children }) => {
 
   return (
     <Layout style={{ height: '100%', minHeight: 0 }}>
-      <Splitter
+      <AdaptiveSplitter
         className={`farmcontrol-splitter dashboard-splitter${
-          sizeTransitioning ? ' is-size-transitioning' : ''
+          collapsed ? ' is-sidebar-collapsed' : ''
-        }${collapsed ? ' is-sidebar-collapsed' : ''}`}
+        }`}
         style={{ height: '100%' }}
-        onResizeStart={handleResizeStart}
         onResize={handleResize}
         onResizeEnd={handleResizeEnd}
       >
-        <Splitter.Panel
+        <AdaptiveSplitter.Panel
           className={`dashboard-splitter-sidebar-panel${
             collapsed ? ' is-collapsed' : ''
           }`}
           size={sidebarSize}
           min={collapsedWidth}
-          max={
+          max={MAX_SIDEBAR_PX}
-            collapsed && resizeLocked && !sizeTransitioning
+          collapsed={collapsed}
-              ? collapsedWidth
+          collapsedSize={collapsedWidth}
-              : MAX_SIDEBAR_PX
+          collapseThreshold={COLLAPSE_BELOW_PX}
-          }
+          expandDragPx={EXPAND_DRAG_PX}
-          resizable={!resizeLocked}
+          expandedSize={lastExpandedSizeRef.current}
-          style={{
+          onCollapse={handleSplitterCollapse}
-            overflow: 'visible',
+          style={{ overflow: 'visible' }}
-            '--dashboard-splitter-sidebar-size': `${sidebarSize}px`
-          }}
         >
           {sidebarNode}
-        </Splitter.Panel>
+        </AdaptiveSplitter.Panel>
-        <Splitter.Panel min={320} className='dashboard-splitter-content-panel'>
+        <AdaptiveSplitter.Panel
+          min={320}
+          className='dashboard-splitter-content-panel'
+        >
           {children}
-        </Splitter.Panel>
+        </AdaptiveSplitter.Panel>
-      </Splitter>
+      </AdaptiveSplitter>
     </Layout>
   )
 }