[web] Changes to web keyboard selection shortcuts for more consistent behavior (#114264)

packages/flutter/lib/src/widgets/default_text_editing_shortcuts.dart

@@ -402,22 +402,16 @@ class DefaultTextEditingShortcuts extends StatelessWidget {
     SingleActivator(LogicalKeyboardKey.arrowLeft, alt: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowRight, alt: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowUp, alt: true): DoNothingAndStopPropagationTextIntent(),
-    SingleActivator(LogicalKeyboardKey.arrowDown, shift: true, alt: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowLeft, shift: true, alt: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowRight, shift: true, alt: true): DoNothingAndStopPropagationTextIntent(),
-    SingleActivator(LogicalKeyboardKey.arrowUp, shift: true, alt: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowDown, meta: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowLeft, meta: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowRight, meta: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowUp, meta: true): DoNothingAndStopPropagationTextIntent(),
-    SingleActivator(LogicalKeyboardKey.arrowDown, shift: true, meta: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowLeft, shift: true, meta: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowRight, shift: true, meta: true): DoNothingAndStopPropagationTextIntent(),
-    SingleActivator(LogicalKeyboardKey.arrowUp, shift: true, meta: true): DoNothingAndStopPropagationTextIntent(),
-    SingleActivator(LogicalKeyboardKey.arrowDown, shift: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowLeft, shift: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowRight, shift: true): DoNothingAndStopPropagationTextIntent(),
-    SingleActivator(LogicalKeyboardKey.arrowUp, shift: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.pageUp, shift: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.pageDown, shift: true): DoNothingAndStopPropagationTextIntent(),
     SingleActivator(LogicalKeyboardKey.end, shift: true): DoNothingAndStopPropagationTextIntent(),
@@ -445,6 +439,8 @@ class DefaultTextEditingShortcuts extends StatelessWidget {
     const SingleActivator(LogicalKeyboardKey.escape): const DoNothingAndStopPropagationTextIntent(),
     const SingleActivator(LogicalKeyboardKey.tab): const DoNothingAndStopPropagationTextIntent(),
     const SingleActivator(LogicalKeyboardKey.tab, shift: true): const DoNothingAndStopPropagationTextIntent(),
+    const SingleActivator(LogicalKeyboardKey.arrowDown, shift: true, alt: true): const DoNothingAndStopPropagationTextIntent(),
+    const SingleActivator(LogicalKeyboardKey.arrowUp, shift: true, alt: true): const DoNothingAndStopPropagationTextIntent(),
   };
 
   static Map<ShortcutActivator, Intent> get _shortcuts {

packages/flutter/test/widgets/editable_text_shortcuts_test.dart

@@ -67,6 +67,8 @@ void main() {
       '0123456789ABCDEFGHIJ'
       '0123456789ABCDEFGHIJ'
       '0123456789ABCDEFGHIJ';
+
+  const String testVerticalText = '1\n2\n3\n4\n5\n6\n7\n8\n9';
   final TextEditingController controller = TextEditingController(text: testText);
 
   final FocusNode focusNode = FocusNode();
@@ -2043,7 +2045,8 @@ void main() {
       }, variant: appleOnly);
     });
 
-    testWidgets('vertical movement', (WidgetTester tester) async {
+    testWidgets('vertical movement outside of selection',
+        (WidgetTester tester) async {
       controller.text = testText;
       controller.selection = const TextSelection.collapsed(
         offset: 0,
@@ -2052,6 +2055,10 @@ void main() {
       await tester.pumpWidget(buildEditableText());
 
       for (final SingleActivator activator in allModifierVariants(LogicalKeyboardKey.arrowDown)) {
+        // Skip for the shift shortcut since web accepts it.
+        if (activator.shift) {
+          continue;
+        }
         await sendKeyCombination(tester, activator);
         await tester.pump();
 
@@ -2201,4 +2208,102 @@ void main() {
     }, variant: appleOnly);
 
   }, skip: !kIsWeb);// [intended] specific tests target web.
+
+  group('Web does accept', () {
+      testWidgets('select up', (WidgetTester tester) async {
+        const SingleActivator selectUp =
+            SingleActivator(LogicalKeyboardKey.arrowUp, shift: true);
+        controller.text = testVerticalText;
+        controller.selection = const TextSelection.collapsed(
+          offset: 5,
+        );
+
+        await tester.pumpWidget(buildEditableText());
+        await sendKeyCombination(tester, selectUp);
+        await tester.pump();
+
+        expect(controller.text, testVerticalText);
+        expect(
+          controller.selection,
+          const TextSelection(
+              baseOffset: 5,
+              extentOffset: 3), // selection extends upwards from 5
+          reason: selectUp.toString(),
+        );
+      }, variant: TargetPlatformVariant.desktop());
+
+      testWidgets('select down', (WidgetTester tester) async {
+        const SingleActivator selectDown =
+            SingleActivator(LogicalKeyboardKey.arrowDown, shift: true);
+        controller.text = testVerticalText;
+        controller.selection = const TextSelection.collapsed(
+          offset: 5,
+        );
+
+        await tester.pumpWidget(buildEditableText());
+        await sendKeyCombination(tester, selectDown);
+        await tester.pump();
+
+        expect(controller.text, testVerticalText);
+        expect(
+          controller.selection,
+          const TextSelection(
+              baseOffset: 5,
+              extentOffset: 7), // selection extends downwards from 5
+          reason: selectDown.toString(),
+        );
+      }, variant: TargetPlatformVariant.desktop());
+
+      testWidgets('select all up', (WidgetTester tester) async {
+        final bool isMacOS = defaultTargetPlatform == TargetPlatform.macOS;
+        final SingleActivator selectAllUp = isMacOS
+            ? const SingleActivator(LogicalKeyboardKey.arrowUp,
+                shift: true, meta: true)
+            : const SingleActivator(LogicalKeyboardKey.arrowUp,
+                shift: true, alt: true);
+        controller.text = testVerticalText;
+        controller.selection = const TextSelection.collapsed(
+          offset: 5,
+        );
+
+        await tester.pumpWidget(buildEditableText());
+        await sendKeyCombination(tester, selectAllUp);
+        await tester.pump();
+
+        expect(controller.text, testVerticalText);
+        expect(
+          controller.selection,
+          const TextSelection(
+              baseOffset: 5,
+              extentOffset: 0), // selection extends all the way up
+          reason: selectAllUp.toString(),
+        );
+      }, variant: TargetPlatformVariant.desktop());
+
+      testWidgets('select all down', (WidgetTester tester) async {
+        final bool isMacOS = defaultTargetPlatform == TargetPlatform.macOS;
+        final SingleActivator selectAllDown = isMacOS
+            ? const SingleActivator(LogicalKeyboardKey.arrowDown,
+                shift: true, meta: true)
+            : const SingleActivator(LogicalKeyboardKey.arrowDown,
+                shift: true, alt: true);
+        controller.text = testVerticalText;
+        controller.selection = const TextSelection.collapsed(
+          offset: 5,
+        );
+
+        await tester.pumpWidget(buildEditableText());
+        await sendKeyCombination(tester, selectAllDown);
+        await tester.pump();
+
+        expect(controller.text, testVerticalText);
+        expect(
+          controller.selection,
+          const TextSelection(
+              baseOffset: 5,
+              extentOffset: 17), // selection extends all the way down
+          reason: selectAllDown.toString(),
+        );
+    }, variant: TargetPlatformVariant.desktop());
+  }, skip: !kIsWeb); // [intended] specific tests target web.
 }