fix:完善评论组件@圈人功能

src/modules/Comment/mentionEditor.vue

@@ -0,0 +1,235 @@
+<template>
+  <div class="mention-container" ref="containerRef">
+    <slot></slot>
+
+    <div ref="mirrorRef" class="textarea-mirror" aria-hidden="true"></div>
+
+    <transition name="el-zoom-in-top">
+      <div 
+        v-if="showPopover" 
+        class="mention-popover"
+        :style="{ top: popoverPos.top + 'px', left: popoverPos.left + 'px' }"
+      >
+        <div class="mention-list" v-if="filteredList.length">
+          <div
+            v-for="(user, index) in filteredList"
+            :key="user.id"
+            :class="['mention-item', { active: index === selectIndex }]"
+            @mousedown.prevent="handleSelect(user)"
+            @mouseenter="selectIndex = index"
+          >
+            <name-avatar :name="user.nickname" :size="20" />
+            <span class="name">{{ user.nickname }}</span>
+          </div>
+        </div>
+        <div v-else class="mention-empty">未找到人员</div>
+      </div>
+    </transition>
+  </div>
+</template>
+
+<script setup>
+import { ref, computed, onMounted, nextTick, watch } from 'vue';
+
+const props = defineProps({
+  modelValue: String,
+  users: { type: Array, default: () => [] }
+});
+
+const emit = defineEmits(['update:modelValue', 'select']);
+
+const containerRef = ref(null);
+const mirrorRef = ref(null);
+const showPopover = ref(false);
+const searchKey = ref("");
+const selectIndex = ref(0);
+const popoverPos = ref({ top: 0, left: 0 });
+let targetInput = null; // 存储原生 textarea 引用
+
+const filteredList = computed(() => {
+  return props.users.filter(u => u.nickname.includes(searchKey.value));
+});
+
+// 计算像素坐标的核心逻辑
+const computeCaretPosition = () => {
+  if (!targetInput || !mirrorRef.value) return;
+
+  const val = targetInput.value;
+  const cursorIndex = targetInput.selectionStart;
+  
+  // 找到最近的一个 @
+  const textBefore = val.slice(0, cursorIndex);
+  const lastAtPos = textBefore.lastIndexOf("@");
+  
+  // 获取 @ 到光标之间的内容作为搜索词
+  searchKey.value = textBefore.slice(lastAtPos + 1);
+
+  // --- 镜像同步逻辑 ---
+  const style = window.getComputedStyle(targetInput);
+  const mirror = mirrorRef.value;
+
+  // 复制所有会影响排版的样式
+  const propList = ['fontFamily', 'fontSize', 'fontWeight', 'lineHeight', 'paddingTop', 'paddingLeft', 'paddingRight', 'paddingBottom', 'borderWidth', 'boxSizing', 'letterSpacing', 'wordBreak'];
+  propList.forEach(prop => mirror.style[prop] = style[prop]);
+  mirror.style.width = targetInput.offsetWidth + 'px';
+
+  // 将内容填入镜像，在 @ 位置插入标记元素
+  const contentBeforeAt = val.slice(0, lastAtPos);
+  const contentAtToCursor = val.slice(lastAtPos, cursorIndex);
+  
+  // 使用 textContent 防止 XSS，使用 <br> 处理换行
+  mirror.textContent = contentBeforeAt;
+  const marker = document.createElement('span');
+  marker.textContent = '@';
+  marker.style.color = 'red'; // 仅调试可见
+  mirror.appendChild(marker);
+  
+  // 继续填充剩余内容以保持排版一致
+  const remaining = document.createTextNode(contentAtToCursor);
+  mirror.appendChild(remaining);
+
+  // 获取标记位的相对坐标
+  nextTick(() => {
+    popoverPos.value = {
+      // offsetTop 是输入框顶部的偏移 + 标记位高度 - 滚动条高度
+      top: targetInput.offsetTop + marker.offsetTop + parseInt(style.lineHeight) - targetInput.scrollTop,
+      left: targetInput.offsetLeft + marker.offsetLeft
+    };
+  });
+};
+
+const handleInput = (e) => {
+  const el = e.target;
+  const val = el.value;
+  const pos = el.selectionStart; // 当前光标位置
+  
+  // 1. 获取光标之前的文本
+  const textBefore = val.slice(0, pos);
+  
+  // 2. 找到光标前最近的一个 @
+  const lastAtPos = textBefore.lastIndexOf("@");
+
+  if (lastAtPos !== -1) {
+    // 3. 关键逻辑：获取 @ 到光标之间的内容
+    const contentBetween = textBefore.slice(lastAtPos + 1);
+    
+    // 4. 判断逻辑：
+    // - 如果 @ 和光标之间有空格，说明这一段提及已结束，不弹窗
+    // - 如果 @ 前面不是空格且不是开头，说明可能是邮箱地址，不弹窗
+    const charBeforeAt = textBefore[lastAtPos - 1];
+    const isAtStartOrAfterSpace = !charBeforeAt || /\s/.test(charBeforeAt);
+    const hasSpaceBetween = /\s/.test(contentBetween);
+
+    if (isAtStartOrAfterSpace && !hasSpaceBetween) {
+      searchKey.value = contentBetween;
+      showPopover.value = true;
+      computeCaretPosition(); // 重新计算位置
+      return;
+    }
+  }
+  
+  // 其余情况全部关闭
+  showPopover.value = false;
+};
+
+const handleKeyDown = (e) => {
+  if (!showPopover.value) return;
+  if (e.key === 'ArrowUp') {
+    e.preventDefault();
+    selectIndex.value = (selectIndex.value - 1 + filteredList.value.length) % filteredList.value.length;
+  } else if (e.key === 'ArrowDown') {
+    e.preventDefault();
+    selectIndex.value = (selectIndex.value + 1) % filteredList.value.length;
+  } else if (e.key === 'Enter') {
+    e.preventDefault();
+    if (filteredList.value[selectIndex.value]) handleSelect(filteredList.value[selectIndex.value]);
+  } else if (e.key === 'Escape') {
+    showPopover.value = false;
+  }
+};
+
+const handleSelect = (user) => {
+  const val = props.modelValue;
+  const pos = targetInput.selectionStart;
+  const textBefore = val.slice(0, pos);
+  const lastAtPos = textBefore.lastIndexOf("@");
+  
+  const newValue = val.slice(0, lastAtPos) + `@${user.nickname} ` + val.slice(pos);
+  emit('update:modelValue', newValue);
+  emit('select', user);
+  showPopover.value = false;
+  nextTick(() => targetInput.focus());
+};
+
+onMounted(() => {
+  targetInput = containerRef.value.querySelector('textarea');
+  if (targetInput) {
+    targetInput.addEventListener('input', handleInput);
+    targetInput.addEventListener('keydown', handleKeyDown);
+    targetInput.addEventListener('scroll', () => {
+      if (showPopover.value) computeCaretPosition();
+    });
+  }
+});
+</script>
+
+<style scoped lang="scss">
+.mention-container {
+  position: relative;
+  width: 100%;
+}
+
+/* 镜像层：必须绝对定位且隐藏 */
+.textarea-mirror {
+  position: absolute;
+  top: 0;
+  left: 0;
+  z-index: -999;
+  visibility: hidden;
+  white-space: pre-wrap;
+  word-wrap: break-word;
+  overflow: hidden;
+}
+
+.mention-popover {
+  position: absolute;
+  z-index: 3000;
+  background: #fff;
+  border-radius: 8px;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
+  border: 1px solid #e4e7ed;
+  min-width: 160px;
+}
+
+.mention-list {
+  max-height: 200px;
+  overflow-y: auto;
+  padding: 4px 0;
+
+  .mention-item {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    padding: 8px 12px;
+    cursor: pointer;
+    transition: all 0.2s;
+    
+    &.active {
+      background-color: #f0f7ff;
+      color: #409eff;
+    }
+
+    .name {
+      font-size: 14px;
+      font-weight: 500;
+    }
+  }
+}
+
+.mention-empty {
+  padding: 12px;
+  text-align: center;
+  color: #909399;
+  font-size: 13px;
+}
+</style>