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Clarify showDuration and waitDuration API docs and test behavior (#36970)

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* Improve showDuration and waitDuration explanation and tests

* Add condition to test to ensure that tooltip does not show before long press duration is over
This commit is contained in:
Shi-Hao Hong 2019-07-26 09:24:54 -07:00 committed by GitHub
parent 07683f1d2b
commit f1e87c48ef
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2 changed files with 20 additions and 7 deletions
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8
packages/flutter/lib/src/material/tooltip.dart
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@ -124,10 +124,14 @@ class Tooltip extends StatefulWidget {
/// The length of time that a pointer must hover over a tooltip's widget
/// before the tooltip will be shown.
///
/// Once the pointer leaves the widget, the tooltip will immediately
/// disappear.
///
/// Defaults to 0 milliseconds (tooltips are shown immediately upon hover).
final Duration waitDuration;
/// The length of time that the tooltip will be shown once it has appeared.
/// The length of time that the tooltip will be shown after a long press
/// is released.
///
/// Defaults to 1.5 seconds.
final Duration showDuration;
@ -220,7 +224,7 @@ class _TooltipState extends State<Tooltip> with SingleTickerProviderStateMixin {
return;
}
if (_longPressActivated) {
// Tool tips activated by long press should stay around for 1.5s.
// Tool tips activated by long press should stay around for the showDuration.
_hideTimer ??= Timer(showDuration, _controller.reverse);
} else {
// Tool tips activated by hover should disappear as soon as the mouse

19
packages/flutter/test/material/tooltip_test.dart
View File

@ -574,7 +574,7 @@ void main() {
));
}, skip: isBrowser);
testWidgets('Tooltip stays around', (WidgetTester tester) async {
testWidgets('Tooltip stays after long press', (WidgetTester tester) async {
await tester.pumpWidget(
MaterialApp(
home: Center(
@ -592,18 +592,30 @@ void main() {
final Finder tooltip = find.byType(Tooltip);
TestGesture gesture = await tester.startGesture(tester.getCenter(tooltip));
// long press reveals tooltip
await tester.pump(kLongPressTimeout);
await tester.pump(const Duration(milliseconds: 10));
await gesture.up();
expect(find.text(tooltipText), findsOneWidget);
await gesture.up();
// tap (down, up) gesture hides tooltip, since its not
// a long press
await tester.tap(tooltip);
await tester.pump(const Duration(milliseconds: 10));
expect(find.text(tooltipText), findsNothing);
// long press once more
gesture = await tester.startGesture(tester.getCenter(tooltip));
await tester.pump();
await tester.pump(const Duration(milliseconds: 300));
expect(find.text(tooltipText), findsNothing);
await tester.pump(kLongPressTimeout);
await tester.pump(const Duration(milliseconds: 10));
expect(find.text(tooltipText), findsOneWidget);
// keep holding the long press, should still show tooltip
await tester.pump(kLongPressTimeout);
expect(find.text(tooltipText), findsOneWidget);
gesture.up();
@ -611,7 +623,6 @@ void main() {
testWidgets('Tooltip shows/hides when hovered', (WidgetTester tester) async {
const Duration waitDuration = Duration(milliseconds: 0);
const Duration showDuration = Duration(milliseconds: 1500);
final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
await gesture.addPointer();
await gesture.moveTo(const Offset(1.0, 1.0));
@ -623,7 +634,6 @@ void main() {
home: Center(
child: Tooltip(
message: tooltipText,
showDuration: showDuration,
waitDuration: waitDuration,
child: Container(
width: 100.0,
@ -653,7 +663,6 @@ void main() {
await tester.pump();
// Wait for it to disappear.
await tester.pump(showDuration);
await tester.pumpAndSettle();
await gesture.removePointer();
expect(find.text(tooltipText), findsNothing);