DashboardScene: Ignore defaults changes when exiting edit mode (#112796)

* exit dashboard without confirmation with only optional changes

* centralise

* clean up logic

* export to util

public/app/features/dashboard-scene/saving/DashboardPrompt.tsx

@@ -16,7 +16,7 @@ import { DashboardMeta } from 'app/types/dashboard';
 
 import { SaveLibraryVizPanelModal } from '../panel-edit/SaveLibraryVizPanelModal';
 import { DashboardScene } from '../scene/DashboardScene';
-import { getLibraryPanelBehavior, isLibraryPanel } from '../utils/utils';
+import { getLibraryPanelBehavior, hasActualSaveChanges, isLibraryPanel } from '../utils/utils';
 
 interface DashboardPromptProps {
   dashboard: DashboardScene;
@@ -200,7 +200,7 @@ export function ignoreChanges(scene: DashboardScene | null) {
     return true;
   }
 
-  return !canSave || fromScript || fromFile;
+  return !canSave || fromScript || fromFile || (scene.state.isEditing && !hasActualSaveChanges(scene));
 }
 
 export function isEmptyDashboard(

public/app/features/dashboard-scene/scene/DashboardScene.tsx

@@ -72,6 +72,7 @@ import {
   getDefaultVizPanel,
   getLayoutManagerFor,
   getPanelIdForVizPanel,
+  hasActualSaveChanges,
 } from '../utils/utils';
 import { SchemaV2EditorDrawer } from '../v2schema/SchemaV2EditorDrawer';
 
@@ -316,7 +317,7 @@ export class DashboardScene extends SceneObjectBase<DashboardSceneState> impleme
       return;
     }
 
-    if (!this.state.isDirty || skipConfirm || this.managedResourceCannotBeEdited()) {
+    if (!this.state.isDirty || skipConfirm || !hasActualSaveChanges(this) || this.managedResourceCannotBeEdited()) {
       this.exitEditModeConfirmed(restoreInitialState || this.state.isDirty);
       return;
     }

public/app/features/dashboard-scene/utils/utils.ts

@@ -427,3 +427,11 @@ export function hasLibraryPanelsInV1Dashboard(dashboard: Dashboard | undefined):
 }
 
 export const dashboardLog = createLogger('Dashboard');
+
+/**
+ * Checks if there are save changes but not counting time range, refresh rate and default variable value change
+ */
+export function hasActualSaveChanges(dashboard: DashboardScene) {
+  const changes = dashboard.getDashboardChanges();
+  return !!changes.diffCount;
+}