[fix] keep monitor selection across pages in monitor list

web-app/src/app/routes/monitor/monitor-list/monitor-list.component.html

@@ -140,19 +140,6 @@
 </app-toolbar>
 
 <div class="monitor-card-list">
-  <div class="monitor-list-header" *ngIf="monitors?.length">
-    <div class="monitor-header-actions">
-      <label nz-checkbox [(ngModel)]="checkedAll" (ngModelChange)="onAllChecked($event)"></label>
-      <nz-pagination
-        [(nzPageIndex)]="pageIndex"
-        [nzPageSize]="pageSize"
-        [nzTotal]="total"
-        (nzPageIndexChange)="onPageIndexChange($event)"
-        nzSimple
-      ></nz-pagination>
-    </div>
-  </div>
-
   <nz-spin [nzSpinning]="tableLoading">
     <div class="monitor-card-list-content">
       <div
@@ -293,6 +280,30 @@
       </div>
     </div>
   </nz-spin>
+
+  <div class="monitor-list-footer" *ngIf="monitors?.length">
+    <div class="monitor-footer-actions">
+      <ng-container *ngIf="checkedMonitorIds.size > 0">
+        <label nz-checkbox [ngModel]="checkedAll" (ngModelChange)="onAllChecked($event)">
+          {{ 'monitor.select-current-page' | i18n }}
+        </label>
+        <span class="monitor-selected-count">{{ 'monitor.selected-count' | i18n : { count: checkedMonitorIds.size } }}</span>
+        <button nz-button nzType="link" nzSize="small" (click)="clearSelection()">
+          {{ 'monitor.clear-selection' | i18n }}
+        </button>
+      </ng-container>
+    </div>
+    <nz-pagination
+      [(nzPageIndex)]="pageIndex"
+      [nzPageSize]="pageSize"
+      [nzTotal]="total"
+      [nzShowTotal]="rangeTemplate"
+      nzShowSizeChanger
+      [nzPageSizeOptions]="pageSizeOptions"
+      (nzPageIndexChange)="onPageIndexChange($event)"
+      (nzPageSizeChange)="onPageSizeChange($event)"
+    ></nz-pagination>
+  </div>
 </div>
 
 <ng-template #rangeTemplate> {{ 'common.total' | i18n }} {{ total }} </ng-template>

web-app/src/app/routes/monitor/monitor-list/monitor-list.component.less

@@ -86,19 +86,27 @@
   position: relative;
 }
 
-.monitor-list-header {
+.monitor-selected-count {
+  color: rgba(0, 0, 0, 0.45);
+  font-size: 12px;
+}
+
+.monitor-list-footer {
   display: flex;
-  align-items: center;
   justify-content: space-between;
-  margin-bottom: 16px;
+  align-items: center;
+  margin-top: 16px;
   padding: 8px 0;
   flex-wrap: wrap;
   gap: 8px;
 }
 
-.monitor-header-actions {
+.monitor-footer-actions {
   display: flex;
   align-items: center;
+  gap: 8px;
+  // Align the select-all checkbox with the per-row checkboxes, which sit at the card's 12px padding.
+  padding-left: 12px;
 }
 
 .monitor-card-list-content {

web-app/src/app/routes/monitor/monitor-list/monitor-list.component.ts

@@ -53,7 +53,8 @@ export class MonitorListComponent implements OnInit, OnDestroy {
   app!: string | undefined;
   labels!: string | undefined;
   pageIndex: number = 1;
-  pageSize: number = 8;
+  pageSize: number = 10;
+  pageSizeOptions: number[] = [10, 20, 50];
   total: number = 0;
   monitors!: Monitor[];
   tableLoading: boolean = true;
@@ -98,7 +99,7 @@ export class MonitorListComponent implements OnInit, OnDestroy {
         this.app = undefined;
       }
       this.pageIndex = 1;
-      this.pageSize = 8;
+      this.pageSize = 10;
       this.checkedMonitorIds = new Set<number>();
       this.tableLoading = true;
       this.loadMonitorTable();
@@ -134,7 +135,7 @@ export class MonitorListComponent implements OnInit, OnDestroy {
         message => {
           filter$.unsubscribe();
           this.tableLoading = false;
-          this.checkedAll = false;
+          // Filtering changes the result set, so the previous selection no longer applies.
           this.checkedMonitorIds.clear();
           if (message.code === 0) {
             let page = message.data;
@@ -180,8 +181,7 @@ export class MonitorListComponent implements OnInit, OnDestroy {
       .subscribe(
         message => {
           this.tableLoading = false;
-          this.checkedAll = false;
-          this.checkedMonitorIds.clear();
+          // Keep the selection across reloads (pagination, auto-refresh, post-CRUD) so multi-page checks persist (#4164).
           if (message.code === 0) {
             let page = message.data;
             this.monitors = reconcile ? this.reconcileMonitorStates(page.content) : this.resetMonitorStates(page.content);
@@ -205,8 +205,7 @@ export class MonitorListComponent implements OnInit, OnDestroy {
       .subscribe(
         message => {
           this.tableLoading = false;
-          this.checkedAll = false;
-          this.checkedMonitorIds.clear();
+          // Keep the selection across pagination so checks made on other pages persist (#4164).
           if (message.code === 0) {
             let page = message.data;
             // Pagination changes the result set, so reconcile here would flag the previous page as "disappeared" (#4156).
@@ -305,6 +304,7 @@ export class MonitorListComponent implements OnInit, OnDestroy {
         deleteMonitors$.unsubscribe();
         if (message.code === 0) {
           this.notifySvc.success(this.i18nSvc.fanyi('common.notify.delete-success'), '');
+          monitors.forEach(id => this.checkedMonitorIds.delete(id));
           this.updatePageIndex(monitors.size);
           this.loadMonitorTable();
         } else {
@@ -450,6 +450,7 @@ export class MonitorListComponent implements OnInit, OnDestroy {
         cancelManage$.unsubscribe();
         if (message.code === 0) {
           this.notifySvc.success(this.i18nSvc.fanyi('common.notify.cancel-success'), '');
+          monitors.forEach(id => this.checkedMonitorIds.delete(id));
           this.loadMonitorTable();
         } else {
           this.tableLoading = false;
@@ -511,6 +512,7 @@ export class MonitorListComponent implements OnInit, OnDestroy {
         enableManage$.unsubscribe();
         if (message.code === 0) {
           this.notifySvc.success(this.i18nSvc.fanyi('common.notify.enable-success'), '');
+          monitors.forEach(id => this.checkedMonitorIds.delete(id));
           this.loadMonitorTable();
         } else {
           this.tableLoading = false;
@@ -537,14 +539,28 @@ export class MonitorListComponent implements OnInit, OnDestroy {
   }
 
   // begin: List multiple choice paging
-  checkedAll: boolean = false;
+  // Reflects only the current page: checked when every selectable monitor on this page is selected.
+  get checkedAll(): boolean {
+    const selectable = this.monitors?.filter(monitor => !this.isMonitorDisabled(monitor)) ?? [];
+    return selectable.length > 0 && selectable.every(monitor => this.checkedMonitorIds.has(monitor.id));
+  }
 
   onAllChecked(checked: boolean) {
-    if (checked) {
-      this.monitors.forEach(monitor => this.checkedMonitorIds.add(monitor.id));
-    } else {
-      this.checkedMonitorIds.clear();
-    }
+    // Only toggle the current page's selectable monitors, leaving selections on other pages untouched (#4164).
+    this.monitors
+      ?.filter(monitor => !this.isMonitorDisabled(monitor))
+      .forEach(monitor => {
+        if (checked) {
+          this.checkedMonitorIds.add(monitor.id);
+        } else {
+          this.checkedMonitorIds.delete(monitor.id);
+        }
+      });
+  }
+
+  // Clear the whole cross-page selection in one click, so users aren't forced to page back to deselect (#4164).
+  clearSelection() {
+    this.checkedMonitorIds.clear();
   }
 
   onItemChecked(monitorId: number, checked: boolean) {
@@ -566,6 +582,12 @@ export class MonitorListComponent implements OnInit, OnDestroy {
     this.changeMonitorTable(this.currentSortField, this.currentSortOrder);
   }
 
+  onPageSizeChange(pageSize: number) {
+    this.pageSize = pageSize;
+    this.pageIndex = 1;
+    this.changeMonitorTable(this.currentSortField, this.currentSortOrder);
+  }
+
   // begin: app type search filter
 
   onSearchAppClicked() {

web-app/src/assets/i18n/en-US.json

@@ -863,6 +863,9 @@
   "monitor.edit.success": "Update Monitor Success",
   "monitor.enable": "Enable",
   "monitor.export": "Export Selected",
+  "monitor.selected-count": "{{count}} selected",
+  "monitor.clear-selection": "Clear",
+  "monitor.select-current-page": "Select this page",
   "monitor.export-all": "Export All",
   "monitor.export.switch-type": "Please select the export file format",
   "monitor.export.use-type": "Export selected monitors in {{type}} format",

web-app/src/assets/i18n/ja-JP.json

@@ -822,6 +822,9 @@
   "monitor.edit.success": "モニターの更新に成功しました",
   "monitor.enable": "モニターを再開",
   "monitor.export": "モニターをエクスポート",
+  "monitor.selected-count": "{{count}} 件選択中",
+  "monitor.clear-selection": "クリア",
+  "monitor.select-current-page": "現在のページを全選択",
   "monitor.export.switch-type": "エクスポートファイル形式を選択してください！",
   "monitor.export.use-type": "{{type}}ファイル形式でモニターをエクスポート",
   "monitor.grafana.enabled.label": "Grafanaを有効化",

web-app/src/assets/i18n/pt-BR.json

@@ -634,6 +634,9 @@
   "monitor.edit.success": "Monitor modificado com sucesso",
   "monitor.enable": "Retomar monitoramento",
   "monitor.export": "Exportar monitor",
+  "monitor.selected-count": "{{count}} selecionado(s)",
+  "monitor.clear-selection": "Limpar",
+  "monitor.select-current-page": "Selecionar esta página",
   "monitor.export.switch-type": "Selecione o formato do arquivo de exportação!",
   "monitor.export.use-type": "Exportar monitor no formato {{type}}",
   "monitor.grafana.enabled.label": "Habilitar Grafana",

web-app/src/assets/i18n/zh-CN.json

@@ -866,6 +866,9 @@
   "monitor.edit.success": "修改监控成功",
   "monitor.enable": "恢复监控",
   "monitor.export": "导出所选",
+  "monitor.selected-count": "已选 {{count}} 项",
+  "monitor.clear-selection": "清空",
+  "monitor.select-current-page": "全选当前页",
   "monitor.export-all": "导出全部",
   "monitor.export.switch-type": "请选择导出文件格式!",
   "monitor.export.use-type": "以 {{type}} 文件格式导出所选监控",

web-app/src/assets/i18n/zh-TW.json

@@ -826,6 +826,9 @@
   "monitor.edit.success": "修改監控成功",
   "monitor.enable": "恢復監控",
   "monitor.export": "匯出監控",
+  "monitor.selected-count": "已選 {{count}} 項",
+  "monitor.clear-selection": "清空",
+  "monitor.select-current-page": "全選當前頁",
   "monitor.export.switch-type": "請選擇匯出文件格式!",
   "monitor.export.use-type": "以 {{type}} 檔案格式匯出監控",
   "monitor.grafana.enabled.label": "啓用Grafana監控",