From 3934ebd0307d45ceb9413ff34bcf92d7337897d5 Mon Sep 17 00:00:00 2001
From: roymondchen <roymondchen@tencent.com>
Date: Wed, 21 Dec 2022 16:19:08 +0800
Subject: [PATCH] =?UTF-8?q?refactor(editor):=20=E4=BC=98=E5=8C=96=E7=BB=84?=
 =?UTF-8?q?=E4=BB=B6=E6=A0=91=E9=80=BB=E8=BE=91?=
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---
 .../editor/src/layouts/sidebar/LayerPanel.vue | 258 +++++++-----------
 1 file changed, 99 insertions(+), 159 deletions(-)

diff --git a/packages/editor/src/layouts/sidebar/LayerPanel.vue b/packages/editor/src/layouts/sidebar/LayerPanel.vue
index 0a026fcb..1b68b836 100644
--- a/packages/editor/src/layouts/sidebar/LayerPanel.vue
+++ b/packages/editor/src/layouts/sidebar/LayerPanel.vue
@@ -14,42 +14,33 @@
 
     <TMagicTree
       v-if="values.length"
-      tabindex="-1"
       class="magic-editor-layer-tree"
       ref="tree"
       node-key="id"
       empty-text="页面空荡荡的"
       draggable
-      :default-expanded-keys="defaultExpandedKeys"
-      :load="loadItems"
+      :default-expanded-keys="expandedKeys"
+      :default-checked-keys="checkedKeys"
+      :current-node-key="currentNodeKey"
       :data="values"
-      :default-expand-all="true"
       :expand-on-click-node="false"
-      :highlight-current="true"
-      :props="{
-        children: 'items',
-      }"
+      :highlight-current="!isMultiSelect"
+      :check-on-click-node="true"
+      :props="treeProps"
       :filter-node-method="filterNode"
       :allow-drop="allowDrop"
-      :show-checkbox="isMultiSelectStatus || selectedIds.length > 1"
+      :show-checkbox="isMultiSelect"
       @node-click="clickHandler"
       @node-contextmenu="contextmenu"
       @node-drag-end="handleDragEnd"
       @node-collapse="handleCollapse"
       @node-expand="handleExpand"
-      @check="multiClickHandler"
+      @check="checkHandler"
       @mousedown="toggleClickFlag"
       @mouseup="toggleClickFlag"
-      @mouseenter="mouseenterHandler"
-      @mouseleave="mouseleaveHandler"
     >
       <template #default="{ node, data }">
-        <div
-          :id="data.id"
-          class="cus-tree-node"
-          @mouseenter="highlightHandler(data)"
-          :class="{ 'cus-tree-node-hover': canHighlight(data) }"
-        >
+        <div class="cus-tree-node" :id="data.id" @mouseenter="highlightHandler(data)">
           <slot name="layer-node-content" :node="node" :data="data">
             <span>
               {{ `${data.name} (${data.id})` }}
@@ -66,15 +57,16 @@
 </template>
 
 <script lang="ts" setup name="MEditorLayerPanel">
-import { computed, inject, nextTick, onMounted, onUnmounted, ref, watch } from 'vue';
+import { computed, inject, onMounted, onUnmounted, ref, watch } from 'vue';
 import { Search } from '@element-plus/icons-vue';
 import KeyController from 'keycon';
-import { throttle } from 'lodash-es';
+import { difference, throttle, union } from 'lodash-es';
 
 import { TMagicInput, TMagicScrollbar, TMagicTree } from '@tmagic/design';
 import type { Id, MNode, MPage } from '@tmagic/schema';
 import { MContainer, NodeType } from '@tmagic/schema';
 import StageCore from '@tmagic/stage';
+import { getNodePath, isPage } from '@tmagic/utils';
 
 import type { MenuButton, MenuComponent, Services } from '../../type';
 import { Layout } from '../../type';
@@ -87,22 +79,40 @@ defineProps<{
 
 const throttleTime = 150;
 const services = inject<Services>('services');
+const editorService = services?.editorService;
+
 const tree = ref<InstanceType<typeof TMagicTree>>();
 const menu = ref<InstanceType<typeof LayerMenu>>();
-const editorService = services?.editorService;
-const page = computed(() => editorService?.get('page'));
-const values = computed(() => (page.value ? [page.value] : []));
-// 多选选中的节点数组
-const selectedNodes = ref<MNode[]>([]);
+
 // 多选选中的组件id数组
-const selectedIds = computed(() => selectedNodes.value.map((node: MNode) => node.id));
+const checkedKeys = ref<Id[]>([]);
 // 是否多选
-const isMultiSelectStatus = ref(false);
-// 多选场景 取消选中的那个节点id
-const spliceNodeKey = ref<Id>();
+const isCtrlKeyDown = ref(false);
 const filterText = ref('');
 // 默认展开节点
-const defaultExpandedKeys = computed(() => (selectedIds.value.length > 0 ? selectedIds.value : []));
+const expandedKeys = ref<Id[]>([]);
+const currentNodeKey = ref<Id>();
+// 鼠标是否按下标志，用于高亮状态互斥
+const clicked = ref(false);
+
+const treeProps = {
+  children: 'items',
+  disabled: (data: MNode) => Boolean(data.items?.length),
+  class: (data: MNode) => {
+    if (clicked.value || isPage(data)) return '';
+    if (data.id === highlightNode?.value?.id && !checkedKeys.value.includes(data.id)) {
+      return 'cus-tree-node-hover';
+    }
+  },
+};
+
+const isMultiSelect = computed(() => isCtrlKeyDown.value || checkedKeys.value.length > 1);
+
+const nodes = computed(() => editorService?.get<MNode[]>('nodes') || []);
+const page = computed(() => editorService?.get<MPage>('page'));
+const values = computed(() => (page.value ? [page.value] : []));
+// 高亮的节点
+const highlightNode = computed(() => editorService?.get('highlightNode'));
 
 // 触发画布单选
 const select = async (data: MNode) => {
@@ -129,8 +139,6 @@ const highlight = (data: MNode) => {
   editorService?.get<StageCore>('stage')?.highlight(data.id);
 };
 
-const expandedKeys = new Map<Id, Id>();
-
 // tree方法：拖拽时判定目标节点能否成为拖动目标位置
 const allowDrop = (draggingNode: any, dropNode: any, type: string): boolean => {
   const { data } = dropNode || {};
@@ -163,27 +171,22 @@ const handleDragEnd = async (e: any) => {
   editorService?.update(page);
 };
 
-// tree方法： 加载子树数据的方法
-const loadItems = (node: any, resolve: Function) => {
-  if (Array.isArray(node.data)) {
-    return resolve(node.data);
-  }
-  if (Array.isArray(node.data?.items)) {
-    return resolve(node.data?.items);
-  }
-  resolve([]);
-};
-
 // tree事件：节点被关闭时触发的事件
 const handleCollapse = (data: MNode) => {
-  expandedKeys.delete(data.id);
+  expandedKeys.value = expandedKeys.value.filter((id) => id !== data.id);
 };
 
 // tree事件：节点被展开时触发的事件
 const handleExpand = (data: MNode) => {
-  const parent = editorService?.getParentById(data.id);
-  if (!parent?.id) return;
-  expandedKeys.set(parent.id, parent.id);
+  if (!page.value) {
+    expandedKeys.value = [];
+    return;
+  }
+
+  expandedKeys.value = union(
+    expandedKeys.value,
+    getNodePath(data.id, [page.value]).map((node) => node.id),
+  );
 };
 
 // tree方法：对树节点进行筛选时执行的方法
@@ -205,67 +208,32 @@ const filterTextChangeHandler = (val: string) => {
   tree.value?.filter(val);
 };
 
-// 树节点更新后展开上次展开过的节点
-const expandNodes = async () => {
-  if (!tree.value) return;
-  await nextTick();
-  tree.value &&
-    Object.entries(tree.value.getStore().nodesMap).forEach(([id, node]: [string, any]) => {
-      if (node.expanded && node.data.items) {
-        expandedKeys.set(id, id);
-      }
-    });
-  expandedKeys.forEach((key) => {
-    if (!tree.value) return;
-    tree.value.getNode(key)?.expand();
-  });
-};
+watch(nodes, (nodes) => {
+  const ids = nodes?.map((node) => node.id) || [];
 
-watch(
-  () => editorService?.get<MNode[]>('nodes'),
-  (nodes) => {
-    selectedNodes.value = nodes ?? [];
-  },
-);
+  const idsLength = ids.length;
+  const checkedKeysLength = checkedKeys.value.length;
 
-// 设置树节点选中状态
-const setTreeKeyStatus = () => {
-  if (!tree.value) return;
-  if (selectedIds.value.length === 0) {
-    tree.value.setCheckedKeys([]);
-    tree.value.setCurrentKey();
-  } else if (selectedIds.value.length === 1 && !isMultiSelectStatus.value) {
-    // 选中1个
-    tree.value.setCurrentKey(selectedIds.value[0], true);
-    tree.value.setCheckedKeys([]);
-  } else {
-    // 多选框选中多个
-    tree.value.setCheckedKeys(selectedIds.value);
-    tree.value.setCurrentKey();
+  if (
+    difference(
+      idsLength > checkedKeysLength ? ids : checkedKeys.value,
+      idsLength > checkedKeysLength ? checkedKeys.value : ids,
+    ).length
+  ) {
+    tree.value?.setCheckedKeys([], false);
+
+    [currentNodeKey.value] = ids;
+    checkedKeys.value = ids.filter((id) => id !== page.value?.id);
+    expandedKeys.value = union(expandedKeys.value, ids);
   }
-};
-
-watch([selectedIds, tree], async () => {
-  if (!tree.value || !editorService) return;
-  const parent = editorService.get('parent');
-  if (!parent?.id) return;
-
-  const treeNode = tree.value.getNode(parent.id);
-  treeNode?.updateChildren();
-  await expandNodes();
-
-  // 设置高亮节点操作一定要在刷新展开状态之后，否则可能导致设置的高亮无效
-  setTreeKeyStatus();
 });
 
-const mouseenterHandler = () => {
-  tree.value?.$el.focus();
-};
-
-const mouseleaveHandler = () => {
-  tree.value?.$el.blur();
-  isMultiSelectStatus.value = false;
-};
+watch(isMultiSelect, (isMultiSelect) => {
+  if (!isMultiSelect) {
+    currentNodeKey.value = editorService?.get<MNode>('node').id;
+    tree.value?.setCurrentKey(currentNodeKey.value);
+  }
+});
 
 const editorServiceRemoveHandler = () => {
   setTimeout(() => {
@@ -273,37 +241,42 @@ const editorServiceRemoveHandler = () => {
   }, 0);
 };
 
+const windowBlurHandler = () => {
+  isCtrlKeyDown.value = false;
+};
+
 let keycon: KeyController;
 
 onMounted(() => {
   editorService?.on('remove', editorServiceRemoveHandler);
 
-  keycon = new KeyController(tree.value?.$el);
+  keycon = new KeyController();
   const isMac = /mac os x/.test(navigator.userAgent.toLowerCase());
   const ctrl = isMac ? 'meta' : 'ctrl';
 
   keycon
-    .keydown(ctrl, (e) => {
-      e.inputEvent.preventDefault();
-      isMultiSelectStatus.value = true;
+    .keydown((e) => {
+      if (e.key !== ctrl) {
+        isCtrlKeyDown.value = false;
+      }
     })
-    .keyup(ctrl, (e) => {
-      e.inputEvent.preventDefault();
-      isMultiSelectStatus.value = false;
+    .keydown(ctrl, () => {
+      isCtrlKeyDown.value = true;
+    })
+    .keyup(ctrl, () => {
+      isCtrlKeyDown.value = false;
     });
+
+  globalThis.addEventListener('blur', windowBlurHandler);
 });
 
 onUnmounted(() => {
   keycon.destroy();
 
   editorService?.off('remove', editorServiceRemoveHandler);
+  globalThis.removeEventListener('blur', windowBlurHandler);
 });
 
-// 鼠标是否按下标志，用于高亮状态互斥
-const clicked = ref(false);
-// 高亮的节点
-const highlightNode = computed(() => editorService?.get('highlightNode'));
-
 // 鼠标在组件树移动触发高亮
 const highlightHandler = throttle((data: MNode) => {
   highlight(data);
@@ -313,58 +286,25 @@ const toggleClickFlag = () => {
   clicked.value = !clicked.value;
 };
 
-// 是否满足展示高亮
-const canHighlight = (data: MNode) => {
-  if (clicked.value) return false;
-  return (
-    data.id === highlightNode?.value?.id && !selectedIds.value.includes(data.id) && spliceNodeKey.value !== data.id
-  );
-};
-
-// 监听选择模式，针对多选情况做一些处理
-watch(isMultiSelectStatus, () => {
-  // 多选模式如果已存在第一个选中的元素是页面(magic-ui-page) 剔除页面选中状态
-  if (isMultiSelectStatus.value && selectedNodes.value.length === 1 && selectedNodes.value[0].type === NodeType.PAGE) {
-    selectedNodes.value = [];
-  }
-});
-
 // 选择节点多选框
-const multiClickHandler = (data: MNode): void => {
-  if (!data?.id) {
-    throw new Error('没有id');
-  }
-
-  // 页面(magic-ui-page)不可选中
-  if (data.type === NodeType.PAGE) {
-    tree.value?.setCheckedKeys([]);
-    return;
-  }
-
-  const index = selectedNodes.value.findIndex((node) => node.id === data.id);
-  if (index !== -1) {
-    // 已经包含就移除掉
-    selectedNodes.value.splice(index, 1);
-    spliceNodeKey.value = data.id;
+const checkHandler = (data: MNode, { checkedNodes }: any): void => {
+  if (checkedNodes.length > 0) {
+    multiSelect(checkedNodes.map((node: MNode) => node.id));
   } else {
-    selectedNodes.value = [...selectedNodes.value, data];
+    multiSelect(nodes.value.map((node: MNode) => node.id));
   }
-  tree.value?.setCheckedKeys(selectedIds.value);
-  multiSelect(selectedIds.value);
 };
 
 // 点击节点
 const clickHandler = (data: MNode): void => {
-  if (!isMultiSelectStatus.value) {
-    if (services?.uiService.get<boolean>('uiSelectMode')) {
-      document.dispatchEvent(new CustomEvent('ui-select', { detail: data }));
-      return;
-    }
-    tree.value?.setCurrentKey(data.id);
-    select(data);
-  } else {
-    multiClickHandler(data);
+  if (isCtrlKeyDown.value) {
+    return;
   }
+  if (services?.uiService.get<boolean>('uiSelectMode')) {
+    document.dispatchEvent(new CustomEvent('ui-select', { detail: data }));
+    return;
+  }
+  select(data);
 };
 
 // 右键菜单