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code/g3soft-libs/docs/examples/space/empty-children.vue

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+<script setup lang="ts">
+// 空节点（v-if 为 false、注释）不会占位，因此条件渲染不会多出空隙
+import { ref } from 'vue'
+import { G3Button, G3Space, G3Switch } from '@g3soft/ui'
+
+const showDelete = ref(false)
+</script>
+
+<template>
+  <G3Space direction="vertical" :size="12" style="display: flex">
+    <G3Switch v-model="showDelete">显示「删除」按钮</G3Switch>
+    <G3Space :size="8">
+      <G3Button type="outline" size="small">编辑</G3Button>
+      <G3Button type="outline" size="small">复制</G3Button>
+      <!-- 关掉时这里不会留下多余间距 -->
+      <G3Button v-if="showDelete" type="danger-outline" size="small">删除</G3Button>
+    </G3Space>
+  </G3Space>
+</template>