feat: replace drag-and-drop with pointer events for item reordering

frontend/src/components/routine/RoutineEditView.vue

@@ -28,13 +28,8 @@
               class="item-row"
               :data-idx="idx"
               :class="{ 'drag-over': dragOverIdx === idx, dragging: draggingIdx === idx }"
-              draggable="true"
-              @dragstart="(e) => onDragStart(e, idx)"
-              @dragover.prevent="(e) => onDragOver(e, idx)"
-              @drop.prevent="onDrop(idx)"
-              @dragend="onDragEnd"
             >
-              <span class="drag-handle" title="Drag to reorder" @touchstart="(e) => onTouchStart(e, idx)">⠿</span>
+              <span class="drag-handle" title="Drag to reorder" @pointerdown.prevent="(e) => onPointerDown(e, idx)">⠿</span>
               <div class="item-left">
                 <img
                   v-if="item.image_url"
@@ -334,44 +329,13 @@ function cancelEditItem() {
   newItemLocalFile.value = null
 }
 
-function onDragStart(e: DragEvent, idx: number) {
-  if (e.dataTransfer) e.dataTransfer.effectAllowed = 'move'
-  cancelEditItem()
-  draggingIdx.value = idx
-}
-
-function onDragOver(e: DragEvent, idx: number) {
-  if (e.dataTransfer) e.dataTransfer.dropEffect = 'move'
-  if (draggingIdx.value === null || draggingIdx.value === idx) return
-  dragOverIdx.value = idx
-}
-
-function onDrop(idx: number) {
-  if (draggingIdx.value === null || draggingIdx.value === idx) {
-    draggingIdx.value = null
-    dragOverIdx.value = null
-    return
-  }
-  const moved = items.value.splice(draggingIdx.value, 1)[0]
-  items.value.splice(idx, 0, moved)
-  normalizeItemOrder()
-  draggingIdx.value = null
-  dragOverIdx.value = null
-}
-
-function onDragEnd() {
-  draggingIdx.value = null
-  dragOverIdx.value = null
-}
-
-function onTouchStart(e: TouchEvent, idx: number) {
+function onPointerDown(e: PointerEvent, idx: number) {
   draggingIdx.value = idx
   cancelEditItem()
 
-  const handleTouchMove = (moveEvt: TouchEvent) => {
+  const handlePointerMove = (moveEvt: PointerEvent) => {
     moveEvt.preventDefault()
-    const touch = moveEvt.touches[0]
-    const el = document.elementFromPoint(touch.clientX, touch.clientY) as Element | null
+    const el = document.elementFromPoint(moveEvt.clientX, moveEvt.clientY) as Element | null
     if (!el) return
     const row = el.closest('[data-idx]') as HTMLElement | null
     if (!row) return
@@ -381,9 +345,9 @@ function onTouchStart(e: TouchEvent, idx: number) {
     }
   }
 
-  const handleTouchEnd = (endEvt: TouchEvent) => {
-    const touch = endEvt.changedTouches[0]
-    const el = document.elementFromPoint(touch.clientX, touch.clientY) as Element | null
+  const cleanup = (upEvt?: PointerEvent) => {
+    if (upEvt) {
+      const el = document.elementFromPoint(upEvt.clientX, upEvt.clientY) as Element | null
       const fromIdx = draggingIdx.value
       if (el && fromIdx !== null) {
         const row = el.closest('[data-idx]') as HTMLElement | null
@@ -396,14 +360,20 @@ function onTouchStart(e: TouchEvent, idx: number) {
           }
         }
       }
+    }
     draggingIdx.value = null
     dragOverIdx.value = null
-    document.removeEventListener('touchmove', handleTouchMove)
-    document.removeEventListener('touchend', handleTouchEnd)
+    document.removeEventListener('pointermove', handlePointerMove)
+    document.removeEventListener('pointerup', handlePointerUp)
+    document.removeEventListener('pointercancel', handlePointerCancel)
   }
 
-  document.addEventListener('touchmove', handleTouchMove, { passive: false })
-  document.addEventListener('touchend', handleTouchEnd)
+  const handlePointerUp = (upEvt: PointerEvent) => cleanup(upEvt)
+  const handlePointerCancel = () => cleanup()
+
+  document.addEventListener('pointermove', handlePointerMove, { passive: false })
+  document.addEventListener('pointerup', handlePointerUp)
+  document.addEventListener('pointercancel', handlePointerCancel)
 }
 
 async function uploadImage(file: File): Promise<string> {
@@ -575,8 +545,9 @@ function handleCancel() {
   cursor: grab;
   color: var(--form-label, #aaa);
   font-size: 1.15rem;
-  padding-right: 0.45rem;
+  padding: 0.4rem 0.45rem 0.4rem 0;
   user-select: none;
+  touch-action: none;
   flex-shrink: 0;
 }
 
@@ -584,13 +555,6 @@ function handleCancel() {
   cursor: grabbing;
 }
 
-@media (hover: none) {
-  .drag-handle {
-    padding: 0.5rem 0.6rem;
-    font-size: 1.4rem;
-  }
-}
-
 .item-left {
   display: flex;
   align-items: center;