zyejMAll-mobile/pages/chat/components/messageList.vue
2024-08-07 10:31:42 +08:00

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Vue
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<template>
<!-- 聊天虚拟列表 -->
<z-paging ref="pagingRef" v-model="messageList" use-chat-record-mode use-virtual-list
cell-height-mode="dynamic" default-page-size="20" :auto-clean-list-when-reload="false"
safe-area-inset-bottom bottom-bg-color="#f8f8f8" :back-to-top-style="backToTopStyle"
:auto-show-back-to-top="showNewMessageTip" @backToTopClick="onBackToTopClick"
@scrolltoupper="onScrollToUpper" @query="queryList">
<template #top>
<!-- 撑一下顶部导航 -->
<view style="height: 45px"></view>
</template>
<!-- style="transform: scaleY(-1)"必须写,否则会导致列表倒置!!! -->
<!-- 注意不要直接在chat-item组件标签上设置style因为在微信小程序中是无效的请包一层view -->
<template #cell="{item,index}">
<view style="transform: scaleY(-1)">
<!-- 消息渲染 -->
<MessageListItem :message="item" :message-index="index" :message-list="messageList"></MessageListItem>
</view>
</template>
<!-- 底部聊天输入框 -->
<template #bottom>
<slot name="bottom"></slot>
</template>
<!-- 查看最新消息 -->
<template #backToTop>
<text>有新消息</text>
</template>
</z-paging>
</template>
<script setup>
import MessageListItem from '@/pages/chat/components/messageListItem.vue';
import { reactive, ref } from 'vue';
import KeFuApi from '@/sheep/api/promotion/kefu';
import { isEmpty } from '@/sheep/helper/utils';
const messageList = ref([]); // 消息列表
const showNewMessageTip = ref(false); // 显示有新消息提示
const backToTopStyle = reactive({
'width': '100px',
'background-color': '#fff',
'border-radius': '30px',
'box-shadow': '0 2px 4px rgba(0, 0, 0, 0.1)',
'display': 'flex',
'justifyContent': 'center',
'alignItems': 'center',
}); // 返回顶部样式
const queryParams = reactive({
pageNo: 1,
pageSize: 10,
});
const pagingRef = ref(null); // 虚拟列表
const queryList = async (pageNo, pageSize) => {
// 组件加载时会自动触发此方法,因此默认页面加载时会自动触发,无需手动调用
// 这里的pageNo和pageSize会自动计算好直接传给服务器即可
queryParams.pageNo = pageNo;
queryParams.pageSize = pageSize;
await getMessageList();
};
// 获得消息分页列表
const getMessageList = async () => {
const { data } = await KeFuApi.getKefuMessagePage(queryParams);
if (isEmpty(data.list)) {
return;
}
pagingRef.value.completeByTotal(data.list, data.total);
};
/** 刷新消息列表 */
const refreshMessageList = (message = undefined) => {
if (queryParams.pageNo != 1 && message !== undefined) {
showNewMessageTip.value = true;
// 追加数据
pagingRef.value.addChatRecordData([message], false);
return;
}
pagingRef.value.reload();
};
/** 滚动到最新消息 */
const onBackToTopClick = (event) => {
event(false); // 禁用默认操作
pagingRef.value.scrollToBottom();
};
/** 监听滚动到底部事件(因为 scroll 翻转了顶就是底) */
const onScrollToUpper = () => {
// 若已是第一页则不做处理
if (queryParams.pageNo === 1) {
return;
}
showNewMessageTip.value = false;
// 到底重置消息列表
refreshMessageList();
};
defineExpose({ getMessageList, refreshMessageList });
</script>