Add double-click to rename layers, extract useInlineRename composable

- New useInlineRename composable: shared editing state, commit logic,
  and keyboard handling for inline rename across panels
- LayerTree: double-click a layer name to rename inline
- PagesPanel: refactored to use useInlineRename, removing duplicate code

Closes #57

src/components/LayerTree.vue

@@ -3,6 +3,8 @@ import { nextTick, onUnmounted, ref, watch } from 'vue'
 import { useEventListener } from '@vueuse/core'
 import { TreeRoot, TreeItem, ContextMenuRoot, ContextMenuTrigger, ContextMenuPortal } from 'reka-ui'
 
+import { useInlineRename } from '@/composables/use-inline-rename'
+
 import IconCircle from '~icons/lucide/circle'
 import IconComponent from '~icons/lucide/diamond'
 import IconComponentSet from '~icons/lucide/component'
@@ -19,6 +21,7 @@ import { useEditorStore } from '@/stores/editor'
 import NodeContextMenuContent from './NodeContextMenuContent.vue'
 
 const store = useEditorStore()
+const rename = useInlineRename((id, name) => store.renameNode(id, name))
 
 interface LayerNode {
   id: string
@@ -277,7 +280,27 @@ function updateDropTarget(ev: PointerEvent) {
             :data-level="item.level"
           >
             <TreeItem v-slot="{ isExpanded }" v-bind="item.bind" as-child @select="onSelect">
+              <div
+                v-if="rename.editingId.value === item.value.id"
+                class="flex w-full items-center gap-1 py-1"
+                :style="{ paddingLeft: `${8 + (item.level - 1) * 16}px` }"
+              >
+                <span class="w-4 shrink-0" />
+                <component
+                  :is="nodeIcons[item.value.type] ?? IconSquare"
+                  class="size-3 shrink-0 opacity-70"
+                />
+                <input
+                  data-layer-edit
+                  data-test-id="layers-item-input"
+                  class="min-w-0 flex-1 rounded border border-accent bg-input px-1 py-0 text-xs text-surface outline-none"
+                  :value="item.value.name"
+                  @blur="rename.commit(item.value.id, $event.target as HTMLInputElement)"
+                  @keydown="rename.onKeydown"
+                />
+              </div>
               <button
+                v-else
                 data-test-id="layers-item"
                 class="group/row flex w-full cursor-pointer items-center gap-1 rounded border-none py-1 text-left text-xs"
                 :class="[
@@ -290,6 +313,7 @@ function updateDropTarget(ev: PointerEvent) {
                 ]"
                 :style="{ paddingLeft: `${8 + (item.level - 1) * 16}px` }"
                 @pointerdown.prevent="onPointerDown($event, item.value.id)"
+                @dblclick="rename.start(item.value.id, item.value.name, '[data-layer-edit]')"
               >
                 <span
                   v-if="item.hasChildren"

src/components/PagesPanel.vue

@@ -1,6 +1,7 @@
 <script setup lang="ts">
-import { computed, ref, nextTick } from 'vue'
+import { computed } from 'vue'
 
+import { useInlineRename } from '@/composables/use-inline-rename'
 import { useEditorStore } from '@/stores/editor'
 
 const store = useEditorStore()
@@ -16,30 +17,10 @@ const pages = computed(() => {
   return store.graph.getPages()
 })
 
-const editingPageId = ref<string | null>(null)
+const rename = useInlineRename((id, name) => store.renamePage(id, name))
 
-function startRename(pageId: string) {
-  editingPageId.value = pageId
-  nextTick(() => {
-    const input = document.querySelector<HTMLInputElement>('[data-page-edit]')
-    input?.focus()
-    input?.select()
-  })
-}
-
-function commitRename(pageId: string, input: HTMLInputElement) {
-  if (editingPageId.value !== pageId) return
-  const value = input.value.trim()
-  if (value && value !== store.graph.getNode(pageId)?.name) {
-    store.renamePage(pageId, value)
-  }
-  editingPageId.value = null
-}
-
-function onKeydown(e: KeyboardEvent, pageId: string) {
-  if (e.key === 'Enter' || e.key === 'Escape') {
-    ;(e.target as HTMLInputElement).blur()
-  }
+function startRename(pg: { id: string; name: string }) {
+  rename.start(pg.id, pg.name, '[data-page-edit]')
 }
 </script>
 
@@ -61,18 +42,18 @@ function onKeydown(e: KeyboardEvent, pageId: string) {
     <div class="overflow-x-hidden overflow-y-auto scrollbar-thin px-1 pb-1">
       <div v-for="pg in pages" :key="pg.id">
         <input
-          v-if="editingPageId === pg.id"
+          v-if="rename.editingId.value === pg.id"
           data-page-edit
           data-test-id="pages-item-input"
           class="w-full rounded border border-accent bg-input px-2 py-1 text-xs text-surface outline-none"
           :value="pg.name"
-          @blur="commitRename(pg.id, $event.target as HTMLInputElement)"
-          @keydown="onKeydown($event, pg.id)"
+          @blur="rename.commit(pg.id, $event.target as HTMLInputElement)"
+          @keydown="rename.onKeydown"
         />
         <div
           v-else-if="isDivider(pg)"
           class="my-1 flex items-center px-2"
-          @dblclick="startRename(pg.id)"
+          @dblclick="startRename(pg)"
         >
           <div class="h-px flex-1 bg-border" />
         </div>
@@ -86,7 +67,7 @@ function onKeydown(e: KeyboardEvent, pageId: string) {
               : 'bg-transparent text-muted hover:bg-hover hover:text-surface'
           "
           @click="store.switchPage(pg.id)"
-          @dblclick="startRename(pg.id)"
+          @dblclick="startRename(pg)"
         >
           <icon-lucide-file class="size-3 shrink-0" />
           <span class="truncate">{{ pg.name }}</span>

src/composables/use-inline-rename.ts

@@ -0,0 +1,33 @@
+import { nextTick, ref } from 'vue'
+
+export function useInlineRename(onCommit: (id: string, newName: string) => void) {
+  const editingId = ref<string | null>(null)
+  let originalName = ''
+
+  function start(id: string, currentName: string, selector: string) {
+    editingId.value = id
+    originalName = currentName
+    nextTick(() => {
+      const input = document.querySelector<HTMLInputElement>(selector)
+      input?.focus()
+      input?.select()
+    })
+  }
+
+  function commit(id: string, input: HTMLInputElement) {
+    if (editingId.value !== id) return
+    const value = input.value.trim()
+    if (value && value !== originalName) {
+      onCommit(id, value)
+    }
+    editingId.value = null
+  }
+
+  function onKeydown(e: KeyboardEvent) {
+    if (e.key === 'Enter' || e.key === 'Escape') {
+      ;(e.target as HTMLInputElement).blur()
+    }
+  }
+
+  return { editingId, start, commit, onKeydown }
+}