ui: measure editor sidebar height

frontend/src/views/TierEditorView.vue

@@ -90,6 +90,7 @@ let editorLoadToken = 0
 const boardEl = ref(null)
 const exportBoardEl = ref(null)
 const groupListEl = ref(null)
+const sidebarEl = ref(null)
 const poolEl = ref(null)
 const groupDropEls = ref({})
 const fileEl = ref(null)
@@ -97,6 +98,8 @@ const thumbnailFileEl = ref(null)
 const groupSortable = ref(null)
 const poolSortable = ref(null)
 const dropSortables = ref([])
+const editorSidebarMaxHeight = ref('')
+let editorSidebarMeasureFrame = 0
 
 const isNewTierList = computed(() => tierListId.value === 'new')
 const isOwnTierList = computed(() => !!auth.user && !!ownerId.value && ownerId.value === auth.user.id)
@@ -364,6 +367,25 @@ function scrollWorkspaceBodyToTop() {
   workspaceBody?.scrollIntoView({ behavior: 'smooth', block: 'start' })
 }
 
+function updateEditorSidebarMaxHeight() {
+  if (typeof window === 'undefined' || !sidebarEl.value) return
+  const bottomGap = 14
+  const stickyTop = 14
+  const minHeight = 260
+  const sidebarTop = Math.max(sidebarEl.value.getBoundingClientRect().top, stickyTop)
+  const nextHeight = Math.max(minHeight, Math.floor(window.innerHeight - sidebarTop - bottomGap))
+  editorSidebarMaxHeight.value = `${nextHeight}px`
+}
+
+function scheduleEditorSidebarMeasure() {
+  if (typeof window === 'undefined') return
+  if (editorSidebarMeasureFrame) return
+  editorSidebarMeasureFrame = window.requestAnimationFrame(() => {
+    editorSidebarMeasureFrame = 0
+    updateEditorSidebarMaxHeight()
+  })
+}
+
 function openItemContextMenu(itemId, event) {
   if (!canEdit.value || !itemId || !itemsById.value[itemId] || shouldIgnoreItemClick()) return
   selectedItemId.value = itemId
@@ -1355,6 +1377,7 @@ async function loadEditorState() {
   if (loadToken !== editorLoadToken) return
 
   syncSavedEditorSnapshot()
+  scheduleEditorSidebarMeasure()
   if (canEdit.value) {
     await initSortables()
   }
@@ -1374,6 +1397,9 @@ onMounted(() => {
   window.addEventListener('contextmenu', handleGlobalContextMenu, true)
   window.addEventListener('blur', closeItemContextMenu)
   window.addEventListener('scroll', closeItemContextMenu, true)
+  window.addEventListener('resize', scheduleEditorSidebarMeasure)
+  window.addEventListener('scroll', scheduleEditorSidebarMeasure, true)
+  nextTick(() => scheduleEditorSidebarMeasure())
 })
 
 onUnmounted(() => {
@@ -1382,6 +1408,12 @@ onUnmounted(() => {
     window.removeEventListener('contextmenu', handleGlobalContextMenu, true)
     window.removeEventListener('blur', closeItemContextMenu)
     window.removeEventListener('scroll', closeItemContextMenu, true)
+    window.removeEventListener('resize', scheduleEditorSidebarMeasure)
+    window.removeEventListener('scroll', scheduleEditorSidebarMeasure, true)
+    if (editorSidebarMeasureFrame) {
+      window.cancelAnimationFrame(editorSidebarMeasureFrame)
+      editorSidebarMeasureFrame = 0
+    }
   }
   if (thumbnailPreviewUrl.value) URL.revokeObjectURL(thumbnailPreviewUrl.value)
   destroySortables()
@@ -1769,7 +1801,7 @@ onUnmounted(() => {
           </div>
         </div>
 
-        <div class="sidebar">
+        <div ref="sidebarEl" class="sidebar" :style="{ '--editor-sidebar-max-height': editorSidebarMaxHeight || undefined }">
           <div class="sidebar__titleRow">
             <div class="sidebar__title">아이템</div>
             <div class="sidebar__count">{{ visiblePoolCount }} / {{ pool.length }}</div>
@@ -2774,7 +2806,6 @@ onUnmounted(() => {
   object-fit: cover;
 }
 .sidebar {
-  --editor-sidebar-visible-offset: 136px;
   min-width: 0;
   display: flex;
   flex-direction: column;
@@ -2785,7 +2816,7 @@ onUnmounted(() => {
   box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
   position: sticky;
   top: 14px;
-  max-height: calc(100dvh - var(--editor-sidebar-visible-offset));
+  max-height: var(--editor-sidebar-max-height, calc(100dvh - 136px));
   overflow: hidden;
   overscroll-behavior: contain;
 }