调整删除逻辑

frontend/src/components/Tree.vue

@@ -1,6 +1,14 @@
 <template>
   <aside>
-    <TreeNode :slected-file="file" v-for="item in tree" :item = "item" :key="item.path" @change="change" @select="f => file = f"></TreeNode>
+    <TreeNode
+      v-for="item in tree"
+      :slected-file="file"
+      :item="item"
+      :key="item.path"
+      @change="change"
+      @select="f => file = f"
+      @delete="onDelete"
+      ></TreeNode>
   </aside>
 </template>
 
@@ -26,6 +34,14 @@ export default {
         this.tree = tree
       })
     },
+    onDelete (path) {
+      // 删除了正在编辑的文件或者其父目录
+      if (this.file.path.startsWith(path)) {
+        this.file = null
+      }
+
+      this.init()
+    },
     change (path) {
       this.init()
     }

frontend/src/components/TreeNode.vue

@@ -6,11 +6,12 @@
         @dblclick="createFile()"
         @contextmenu.shift.prevent="deleteFile"> {{ item.name }} </summary>
       <tree-node
-        @select="select"
-        @change="p => $emit('change', p)"
         v-for="x in item.children"
         :key="x.path" :item="x"
-        :slected-file="slectedFile"></tree-node>
+        :slected-file="slectedFile"
+        @select="select"
+        @change="p => $emit('change', p)"
+        @delete="p => $emit('delete', p)"></tree-node>
     </details>
     <div
       v-else
@@ -73,7 +74,7 @@ export default {
     deleteFile () {
       if (window.confirm(`确定要删除 [${this.item.path}] 吗？`)) {
         File.delete(this.item.path, () => {
-          this.$emit('change')
+          this.$emit('delete', this.item.path)
         })
       }
     }
@@ -81,7 +82,6 @@ export default {
   watch: {
     slectedFile () {
       this.selected = false
-      console.log('xxxxxxxxx')
     }
   }
 }

frontend/src/pages/Home.vue

@@ -2,7 +2,14 @@
   <div>
     <header class="header">
       <div>
-        <h4 style="padding: 2em;margin: 0"> {{ file.path }}-{{ status }} </h4>
+        <h4 style="padding: 2em;margin: 0">
+          <span v-if="file">
+            {{ file.path }}-{{ status }}
+          </span>
+          <span v-else>
+            未打开文件
+          </span>
+        </h4>
       </div>
     </header>
     <div style="display: flex; just-content: ">
@@ -27,13 +34,13 @@ export default {
       status: '请选择文件',
       value: '',
       lastSaveContent: '',
-      file: {name: '未选择文件'},
+      file: null,
       timer: null
     }
   },
   mounted () {
     this.timer = window.setInterval(() => {
-      this.saveFile(this.file.path)
+      this.saveFile(this.file)
     }, 5000)
   },
   beforeDestroy () {
@@ -42,8 +49,8 @@ export default {
     }
   },
   methods: {
-    saveFile (path) {
-      if (!path) {
+    saveFile (file) {
+      if (!file) {
         return
       }
 
@@ -53,17 +60,21 @@ export default {
 
       const content = this.value
       this.lastSaveContent = content
-      File.write(path, content, () => {
+      File.write(file.path, content, () => {
         this.status = '保存于：' + (new Date()).toLocaleString()
       })
     }
   },
   watch: {
     file (f) {
-      File.read(f.path, data => {
-        this.$refs.editor.setValue(data)
-        this.status = '加载完毕'
-      })
+      if (f) {
+        File.read(f.path, data => {
+          this.$refs.editor.setValue(data)
+          this.status = '加载完毕'
+        })
+      } else {
+        this.$refs.editor.setValue('')
+      }
     }
   }
 }