Allow overriding animatableness of welcome page via exp service

src/vs/workbench/contrib/welcome/gettingStarted/browser/gettingStarted.contribution.ts

@@ -25,6 +25,8 @@ import { IEditorGroupsService } from 'vs/workbench/services/editor/common/editor
 import { EditorResolution } from 'vs/platform/editor/common/editor';
 import { CommandsRegistry, ICommandService } from 'vs/platform/commands/common/commands';
 import { IQuickInputService } from 'vs/platform/quickinput/common/quickInput';
+import { ITASExperimentService } from 'vs/workbench/services/experiment/common/experimentService';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 
 
 export * as icons from 'vs/workbench/contrib/welcome/gettingStarted/browser/gettingStartedIcons';
@@ -245,12 +247,51 @@ registerAction2(class extends Action2 {
 	}
 });
 
+const prefersReducedMotionConfig = {
+	...workbenchConfigurationNodeBase,
+	'properties': {
+		'workbench.welcomePage.preferReducedMotion': {
+			scope: ConfigurationScope.APPLICATION,
+			type: 'boolean',
+			default: true,
+			description: localize('workbench.welcomePage.preferReducedMotion', "When enabled, reduce motion in welcome page.")
+		}
+	}
+} as const;
+
+const prefersStandardMotionConfig = {
+	...workbenchConfigurationNodeBase,
+	'properties': {
+		'workbench.welcomePage.preferReducedMotion': {
+			scope: ConfigurationScope.APPLICATION,
+			type: 'boolean',
+			default: false,
+			description: localize('workbench.welcomePage.preferReducedMotion', "When enabled, reduce motion in welcome page.")
+		}
+	}
+} as const;
+
 class WorkbenchConfigurationContribution {
 	constructor(
 		@IInstantiationService _instantiationService: IInstantiationService,
 		@IGettingStartedService _gettingStartedService: IGettingStartedService,
+		@IConfigurationService _configurationService: IConfigurationService,
+		@ITASExperimentService _experimentSevice: ITASExperimentService,
 	) {
 		// Init the getting started service via DI.
+		this.registerConfigs(_experimentSevice);
+	}
+
+	private async registerConfigs(_experimentSevice: ITASExperimentService) {
+		const preferReduced = await _experimentSevice.getTreatment('welcomePage.preferReducedMotion').catch(e => false);
+		if (preferReduced) {
+			configurationRegistry.deregisterConfigurations([prefersStandardMotionConfig]);
+			configurationRegistry.registerConfiguration(prefersReducedMotionConfig);
+		}
+		else {
+			configurationRegistry.deregisterConfigurations([prefersReducedMotionConfig]);
+			configurationRegistry.registerConfiguration(prefersStandardMotionConfig);
+		}
 	}
 }
 
@@ -267,12 +308,6 @@ configurationRegistry.registerConfiguration({
 			type: 'boolean',
 			default: true,
 			description: localize('workbench.welcomePage.walkthroughs.openOnInstall', "When enabled, an extension's walkthrough will open upon install the extension.")
-		},
-		'workbench.welcomePage.preferReducedMotion': {
-			scope: ConfigurationScope.APPLICATION,
-			type: 'boolean',
-			default: false,
-			description: localize('workbench.welcomePage.preferReducedMotion', "When enabled, reduce motion in welcome page.")
 		}
 	}
 });