.last-branch

@@ -1 +1 @@
-v20260101-07-run-checks-shift-multiselect-delegation-fix
+v20260101-08-run-checks-shift-multiselect-persist

containers/backupchecks/src/templates/main/run_checks.html

@@ -289,7 +289,12 @@
     // Shift-click range selection for checkbox rows
     var lastCheckedCb = null;
 
-    function statusClass(status) {
+    
+
+    // Track checkbox state before click to avoid double-toggle issues across browsers
+    var lastMouseDownCb = null;
+    var lastMouseDownChecked = null;
+function statusClass(status) {
       var s = (status || "").toString().toLowerCase();
 
       // Allow derived display strings like "Success (override)"
@@ -376,12 +381,19 @@
 table.addEventListener('mousedown', function (e) {
   var t = e.target;
   if (!t) return;
-  if (t.classList && t.classList.contains('rc_row_cb') && e.shiftKey) {
+
+  if (t.classList && t.classList.contains('rc_row_cb')) {
+    // Remember state before click so Shift-click logic can reliably compute the intended target state
+    lastMouseDownCb = t;
+    lastMouseDownChecked = t.checked;
+
+    if (e.shiftKey) {
       e.preventDefault();
       if (window.getSelection) {
         try { window.getSelection().removeAllRanges(); } catch (err) {}
       }
     }
+  }
 }, true);
 
 // Handle Shift-click range selection on the checkbox inputs (delegated)
@@ -395,9 +407,15 @@ table.addEventListener('click', function (e) {
     e.stopPropagation();
 
     // The default action would toggle the checkbox; do it manually
-    var targetChecked = !t.checked;
+    // Use the remembered pre-click state to avoid double toggling in some browsers
+    var preChecked = (lastMouseDownCb === t ? lastMouseDownChecked : t.checked);
+    var targetChecked = !preChecked;
     t.checked = targetChecked;
 
+    // Reset mousedown tracking once we've consumed it
+    lastMouseDownCb = null;
+    lastMouseDownChecked = null;
+
     var cbs = Array.prototype.slice.call(table.querySelectorAll('tbody .rc_row_cb'));
     var start = cbs.indexOf(lastCheckedCb);
     var end = cbs.indexOf(t);
@@ -422,7 +440,12 @@ table.addEventListener('click', function (e) {
   // Normal click: let default toggle happen, but remember the last checkbox
   lastCheckedCb = t;
 
-  // Defer update until after the checkbox state changes
+  
+
+  // Reset mousedown tracking
+  lastMouseDownCb = null;
+  lastMouseDownChecked = null;
+// Defer update until after the checkbox state changes
   setTimeout(updateButtons, 0);
 }, true);
 

docs/changelog.md

@@ -151,6 +151,13 @@
 - Disabled default browser text selection when using Shift during checkbox interaction.
 - Applied Gmail-style range selection logic for consistent multi-row selection behavior.
 
+---
+
+## v20260101-08-run-checks-shift-multiselect-selection-retain
+
+- Fixed Shift-click multi-select on the Run Checks page so the initial checkbox selection is preserved when selecting additional rows with Shift.
+- Made Shift range selection use the checkbox pre-click state to prevent unintended double-toggles across browsers.
+
 ================================================================================================================================================
 ## v0.1.14