feat(review-meeting): 添加文件预览对话框组件

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/views/review/meeting/components/FilePreviewDialog.vue

@@ -0,0 +1,144 @@
+<template>
+  <el-dialog
+    v-model="dialogVisible"
+    :title="previewTitle"
+    width="80%"
+    :close-on-click-modal="true"
+    class="file-preview-dialog"
+    @close="handleClose"
+  >
+    <div class="preview-container" v-loading="loading" element-loading-text="加载预览中...">
+      <div v-if="error" class="preview-error">
+        <el-result
+          icon="error"
+          title="预览加载失败"
+          :sub-title="error"
+        >
+          <template #extra>
+            <el-button type="primary" @click="handleOpenInNewWindow">新窗口打开</el-button>
+          </template>
+        </el-result>
+      </div>
+      <iframe
+        v-else-if="previewUrl"
+        :src="previewUrl"
+        class="preview-iframe"
+        frameborder="0"
+        @load="handleIframeLoad"
+      />
+      <el-empty v-else-if="!loading" description="暂无预览内容" />
+    </div>
+  </el-dialog>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, watch } from 'vue'
+import { getAttachmentPreviewUrl, type GetAttachmentPreviewUrlParams } from '@/api/review/meeting'
+
+interface Props {
+  modelValue: boolean
+  meetingId: number
+  attachmentType: 'agenda' | 'minutes'
+  fileName?: string
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  fileName: ''
+})
+
+const emit = defineEmits<{
+  'update:modelValue': [value: boolean]
+}>()
+
+const dialogVisible = computed({
+  get: () => props.modelValue,
+  set: (val) => emit('update:modelValue', val)
+})
+
+const loading = ref(false)
+const error = ref('')
+const previewUrl = ref('')
+
+const previewTitle = computed(() => {
+  const typeName = props.attachmentType === 'agenda' ? '议程附件' : '会议纪要'
+  return props.fileName ? `${props.fileName} - ${typeName}` : typeName
+})
+
+watch(() => props.modelValue, async (visible) => {
+  if (visible && props.meetingId) {
+    await loadPreviewUrl()
+  }
+})
+
+const loadPreviewUrl = async () => {
+  loading.value = true
+  error.value = ''
+  previewUrl.value = ''
+
+  try {
+    const params: GetAttachmentPreviewUrlParams = {
+      id: props.meetingId,
+      attachmentType: props.attachmentType
+    }
+
+    const url = await getAttachmentPreviewUrl(params)
+
+    if (!url) {
+      error.value = '未找到预览文件'
+      return
+    }
+
+    previewUrl.value = url
+  } catch (err: any) {
+    error.value = err.message || '获取预览地址失败'
+  } finally {
+    loading.value = false
+  }
+}
+
+const handleIframeLoad = () => {
+  loading.value = false
+}
+
+const handleClose = () => {
+  previewUrl.value = ''
+  error.value = ''
+}
+
+const handleOpenInNewWindow = () => {
+  if (previewUrl.value) {
+    window.open(previewUrl.value, '_blank')
+  }
+}
+</script>
+
+<style scoped>
+.file-preview-dialog :deep(.el-dialog__body) {
+  padding: 0;
+  height: 70vh;
+}
+
+.preview-container {
+  width: 100%;
+  height: 70vh;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: #f5f5f5;
+}
+
+.preview-iframe {
+  width: 100%;
+  height: 100%;
+  border: none;
+  background: white;
+}
+
+.preview-error {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+</style>