fix(web): keep refresh buttons steady during polling (#2647)

Co-authored-by: 225284228a-droid <239500008+225284228a-droid@users.noreply.github.com>

easytier-web/frontend/src/components/Dashboard.vue

@@ -12,17 +12,24 @@ const devices = ref<Utils.DeviceInfo[]>();
 const networks = ref<CentralNetworkSummary[]>();
 const loadError = ref(false);
 const refreshing = ref(false);
+let requestInFlight = false;
 
-const loadSummary = async () => {
-    if (refreshing.value) return;
-    refreshing.value = true;
-    const results = await Promise.allSettled([
-        props.api.get_summary().then(value => { summary.value = value; }),
-        props.api.list_machines().then(value => { devices.value = value.map(Utils.buildDeviceInfo); }),
-        ...(props.centralEnabled ? [props.api.list_networks().then(value => { networks.value = value; })] : []),
-    ]);
-    loadError.value = results.some(result => result.status === 'rejected');
-    refreshing.value = false;
+const loadSummary = async (manual = false) => {
+    // A manual refresh can show progress for an already running background request.
+    if (manual) refreshing.value = true;
+    if (requestInFlight) return;
+    requestInFlight = true;
+    try {
+        const results = await Promise.allSettled([
+            props.api.get_summary().then(value => { summary.value = value; }),
+            props.api.list_machines().then(value => { devices.value = value.map(Utils.buildDeviceInfo); }),
+            ...(props.centralEnabled ? [props.api.list_networks().then(value => { networks.value = value; })] : []),
+        ]);
+        loadError.value = results.some(result => result.status === 'rejected');
+    } finally {
+        requestInFlight = false;
+        refreshing.value = false;
+    }
 };
 watch(() => props.centralEnabled, () => loadSummary());
 const periodFunc = new Utils.PeriodicTask(loadSummary, 2000);
@@ -45,7 +52,7 @@ const stats = computed(() => [
     <div class="console-page">
         <header class="page-heading">
             <div><h1>{{ t('web.main.dashboard') }}</h1></div>
-            <Button icon="pi pi-refresh" :label="t('web.console.refresh')" severity="secondary" outlined :loading="refreshing" @click="loadSummary" />
+            <Button icon="pi pi-refresh" :label="t('web.console.refresh')" severity="secondary" outlined :loading="refreshing" @click="loadSummary(true)" />
         </header>
         <Message v-if="loadError" severity="warn" :closable="false">{{ t('web.console.load_failed') }}</Message>
         <section class="console-panel summary-strip" :aria-label="t('web.main.dashboard')">

easytier-web/frontend/src/components/DeviceList.vue

@@ -27,6 +27,7 @@ const deviceList = ref<Array<Utils.DeviceInfo> | undefined>(undefined);
 const search = ref('');
 const loadError = ref(false);
 const refreshing = ref(false);
+let requestInFlight = false;
 const expandedRows = ref({});
 
 // 桌面端可在表格与卡片视图之间切换，选择持久化；移动端始终使用紧凑列表
@@ -57,9 +58,11 @@ const copyEnrollCommand = async () => {
     }
 };
 
-const loadDevices = async () => {
-    if (refreshing.value) return;
-    refreshing.value = true;
+const loadDevices = async (manual = false) => {
+    // A manual refresh can show progress for an already running background request.
+    if (manual) refreshing.value = true;
+    if (requestInFlight) return;
+    requestInFlight = true;
     try {
         const resp = await api?.list_machines();
         deviceList.value = (resp || []).map(Utils.buildDeviceInfo);
@@ -68,6 +71,7 @@ const loadDevices = async () => {
         loadError.value = true;
         console.error(e);
     } finally {
+        requestInFlight = false;
         refreshing.value = false;
     }
 };
@@ -214,7 +218,7 @@ const locationText = (device: Utils.DeviceInfo) => {
                         </template>
                     </SelectButton>
                     <Button icon="pi pi-refresh" text severity="secondary" :aria-label="t('web.console.refresh')"
-                        :loading="refreshing" @click="loadDevices" />
+                        :loading="refreshing" @click="loadDevices(true)" />
                 </div>
             </div>
             <div v-if="deviceList === undefined && !loadError" class="loading-rows">
@@ -223,7 +227,7 @@ const locationText = (device: Utils.DeviceInfo) => {
             <div v-else-if="loadError" class="console-empty-state">
                 <i class="pi pi-exclamation-triangle" aria-hidden="true"></i>
                 <h2>{{ t('web.console.load_failed') }}</h2>
-                <Button :label="t('web.console.retry')" icon="pi pi-refresh" @click="loadDevices" />
+                <Button :label="t('web.console.retry')" icon="pi pi-refresh" @click="loadDevices(true)" />
             </div>
             <div v-else-if="sortedDeviceList.length === 0" class="console-empty-state">
                 <i class="pi pi-server" aria-hidden="true"></i>