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frost-mqtt-client/app/src/renderer/src/views/Publish.vue
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Vue

<script setup>
import { ref, watch } from 'vue';
import { useMqttStore } from '../stores/mqtt.js';
import { NCard, NSpace, NFormItem, NInput, NSelect, NSwitch, NButton, NEmpty, NTabs, NTabPane, useMessage } from 'naive-ui';
// 全局状态与消息 API
const store = useMqttStore();
const msg = useMessage();
// 发布表单状态
const topic = ref('');
const payload = ref('');
const qos = ref(1);
const retain = ref(false);
// 当前激活的标签页
const activePublishTab = ref('publish');
// localStorage 持久化 key
const formStorageKey = 'mqtt-client.publish-form';
const publishTabStorageKey = 'mqtt-client.publish-active-tab';
let formReady = false;
// 从 localStorage 恢复发布表单
try {
let savedForm = JSON.parse(localStorage.getItem(formStorageKey) || '{}');
if (typeof savedForm.topic === 'string') {
topic.value = savedForm.topic;
}
if (typeof savedForm.payload === 'string') {
payload.value = savedForm.payload;
}
if ([0, 1, 2].includes(savedForm.qos)) {
qos.value = savedForm.qos;
}
if (typeof savedForm.retain === 'boolean') {
retain.value = savedForm.retain;
}
} catch {
localStorage.removeItem(formStorageKey);
}
// 从 localStorage 恢复当前标签页
try {
let savedTab = localStorage.getItem(publishTabStorageKey);
if (savedTab === 'publish' || savedTab === 'history') {
activePublishTab.value = savedTab;
}
} catch {
localStorage.removeItem(publishTabStorageKey);
}
// 表单变化时持久化
watch([topic, payload, qos, retain], () => {
if (!formReady) {
return;
}
localStorage.setItem(
formStorageKey,
JSON.stringify({
topic: topic.value,
payload: payload.value,
qos: qos.value,
retain: retain.value,
})
);
});
// 标签页变化时持久化
watch(activePublishTab, (tab) => {
localStorage.setItem(publishTabStorageKey, tab);
});
formReady = true;
// QoS 下拉选项
const qosOptions = [
{ label: 'QoS 0 - 最多一次', value: 0 },
{ label: 'QoS 1 - 至少一次', value: 1 },
{ label: 'QoS 2 - 恰好一次', value: 2 },
];
/**
* 发布消息到当前服务器
*/
async function handlePublish() {
let srv = store.activeServer.value;
if (!srv) {
return;
}
if (srv.status !== 'connected') {
msg.warning('请先连接服务器');
return;
}
if (!topic.value.trim()) {
msg.warning('请输入目标主题');
return;
}
let result = await store.publishMessage(srv.id, topic.value.trim(), payload.value, {
qos: qos.value,
retain: retain.value,
});
if (result) {
msg.success('消息已发布到: ' + topic.value);
}
}
/**
* 格式化 Payload 为 JSON
*/
function handleFormatJson() {
try {
let obj = JSON.parse(payload.value);
payload.value = JSON.stringify(obj, null, 2);
msg.info('JSON 已格式化');
} catch {
msg.warning('无效的 JSON 格式');
}
}
/**
* 清空发布历史
*/
async function handleClearHistory() {
await store.clearPublishHistory();
}
/**
* 复制主题到剪贴板
* @param {string} topic - 主题名称
*/
async function copyTopic(topic) {
try {
await navigator.clipboard.writeText(topic);
msg.success('主题已复制');
} catch {
msg.error('复制失败');
}
}
</script>
<template>
<!-- 内容区域 -->
<div
v-if="store.activeServer.value"
class="publish-view"
>
<n-tabs
v-model:value="activePublishTab"
type="line"
size="small"
>
<n-tab-pane
name="publish"
tab="发布消息"
>
<n-card
size="small"
:content-style="{
display: 'flex',
flexDirection: 'column',
minHeight: 0,
overflow: 'hidden',
}"
>
<div class="publish-form">
<n-form-item
class="topic-field"
label="目标主题 (Topic)"
>
<n-input
v-model:value="topic"
placeholder="例如: sensor/device01/temperature"
/>
</n-form-item>
<n-space align="center">
<n-form-item label="QoS">
<n-select
v-model:value="qos"
:options="qosOptions"
style="width: 160px"
/>
</n-form-item>
<n-form-item label="保留消息">
<n-switch v-model:value="retain" />
</n-form-item>
</n-space>
<n-form-item
class="payload-field"
label="消息内容 (Payload)"
>
<n-input
v-model:value="payload"
type="textarea"
:resizable="false"
:rows="1"
/>
</n-form-item>
<n-space>
<n-button
type="primary"
@click="handlePublish"
>发布消息</n-button>
<n-button
@click="handleFormatJson"
>格式化 JSON</n-button>
</n-space>
</div>
</n-card>
</n-tab-pane>
<n-tab-pane
name="history"
tab="发布历史"
>
<n-card
size="small"
:content-style="{
display: 'flex',
flexDirection: 'column',
minHeight: 0,
overflow: 'hidden',
}"
>
<n-space style="margin-bottom: 12px">
<n-button
size="small"
@click="handleClearHistory"
>清空历史</n-button>
</n-space>
<n-empty
v-if="store.publishHistory.value.length === 0"
description="暂无发布记录"
/>
<div
v-else
class="msg-log"
>
<div
v-for="m in store.publishHistory.value"
:key="m.id || m.time"
class="msg-entry"
>
<div class="msg-header">
<span
class="msg-time"
>{{ m.time }}</span>
<span
class="msg-dir pub"
>PUB</span>
<span
class="msg-topic"
:title="m.topic"
@click="copyTopic(m.topic)"
>{{ m.topic }}</span>
<span
class="msg-meta"
>QoS{{ m.qos }}{{ m.retain ? ' R' : '' }}</span>
</div>
<pre
class="msg-payload"
>{{ m.payload }}</pre>
</div>
</div>
</n-card>
</n-tab-pane>
</n-tabs>
</div>
<!-- 空状态 -->
<n-empty
v-else
description="请先在左侧选择一个 MQTT 服务器"
/>
</template>
<style scoped lang="less">
.publish-view {
display: flex;
flex-direction: column;
width: 100%;
height: 100%;
min-width: 0;
min-height: 0;
:deep(.n-tabs) {
display: flex;
flex-direction: column;
height: 100%;
min-height: 0;
}
:deep(.n-tabs-nav) {
flex-shrink: 0;
}
:deep(.n-tabs-pane-wrapper) {
flex: 1 1 auto;
min-height: 0;
overflow: hidden;
}
:deep(.n-tabs-tab-panels),
:deep(.n-tabs-pane-wrapper) {
height: 100%;
min-height: 0;
}
:deep(.n-tab-pane) {
box-sizing: border-box;
height: 100%;
min-height: 0;
}
:deep(.n-tab-pane > .n-card) {
display: flex;
flex-direction: column;
height: 100%;
min-height: 0;
}
:deep(.n-card__content) {
flex: 1 1 auto;
min-height: 0;
overflow: hidden;
> div {
height: 100%;
min-height: 0;
}
}
}
.topic-field {
width: 100%;
:deep(.n-form-item-blank) {
width: 100%;
}
}
.publish-form {
display: flex;
flex-direction: column;
height: 100%;
min-height: 0;
.payload-field {
flex: 1;
min-height: 0;
display: flex;
flex-direction: column;
:deep(.n-form-item-blank) {
flex: 1;
min-height: 0;
}
:deep(.n-input) {
height: 100%;
}
:deep(.n-input__textarea-el),
:deep(textarea) {
resize: none !important;
height: 100% !important;
min-height: 0 !important;
font-family: monospace;
}
}
}
.msg-log {
background: var(--frost-color-bg-light);
border-radius: 6px;
padding: 12px;
height: 100%;
max-height: 100%;
box-sizing: border-box;
overflow-y: auto;
font-family: monospace;
font-size: 12px;
line-height: 1.7;
color: #333;
}
.msg-entry {
padding: 8px 0;
border-bottom: 1px solid var(--frost-shadow-black-6);
}
.msg-header {
display: flex;
align-items: center;
gap: 8px;
min-width: 0;
}
.msg-time {
color: var(--frost-color-text-tertiary);
flex-shrink: 0;
}
.msg-dir {
flex-shrink: 0;
font-weight: 700;
width: 28px;
&.pub {
color: var(--frost-info-color);
}
}
.msg-topic {
color: var(--frost-color-topic);
min-width: 0;
flex: 1;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
cursor: pointer;
&:hover {
text-decoration: underline;
}
}
.msg-payload {
margin: 6px 0 0;
padding: 8px 10px;
border-radius: 4px;
background: var(--frost-shadow-black-4);
color: #333;
font: inherit;
white-space: pre-wrap;
overflow-wrap: anywhere;
}
.msg-meta {
color: var(--frost-color-text-tertiary);
font-size: 11px;
flex-shrink: 0;
}
</style>