blob: 81d79a5a82e34a63d0fa59f1a04cab445143da96 [file] [log] [blame]
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/foundation.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter_test/flutter_test.dart';
import 'rendering_tester.dart';
void main() {
MyTestRenderingFlutterBinding.ensureInitialized();
tearDown(() {
final List<PipelineOwner> children = <PipelineOwner>[];
RendererBinding.instance.rootPipelineOwner.visitChildren((PipelineOwner child) {
children.add(child);
});
children.forEach(RendererBinding.instance.rootPipelineOwner.dropChild);
});
test("BindingPipelineManifold notifies binding if render object managed by binding's PipelineOwner tree needs visual update", () {
final PipelineOwner child = PipelineOwner();
RendererBinding.instance.rootPipelineOwner.adoptChild(child);
final RenderObject renderObject = TestRenderObject();
child.rootNode = renderObject;
renderObject.scheduleInitialLayout();
RendererBinding.instance.rootPipelineOwner.flushLayout();
MyTestRenderingFlutterBinding.instance.ensureVisualUpdateCount = 0;
renderObject.markNeedsLayout();
expect(MyTestRenderingFlutterBinding.instance.ensureVisualUpdateCount, 1);
});
test('Turning global semantics on/off creates semantics owners in PipelineOwner tree', () {
final PipelineOwner child = PipelineOwner(
onSemanticsUpdate: (_) { },
);
RendererBinding.instance.rootPipelineOwner.adoptChild(child);
expect(child.semanticsOwner, isNull);
expect(RendererBinding.instance.rootPipelineOwner.semanticsOwner, isNull);
final SemanticsHandle handle = SemanticsBinding.instance.ensureSemantics();
expect(child.semanticsOwner, isNotNull);
expect(RendererBinding.instance.rootPipelineOwner.semanticsOwner, isNotNull);
handle.dispose();
expect(child.semanticsOwner, isNull);
expect(RendererBinding.instance.rootPipelineOwner.semanticsOwner, isNull);
});
}
class MyTestRenderingFlutterBinding extends TestRenderingFlutterBinding {
static MyTestRenderingFlutterBinding get instance => BindingBase.checkInstance(_instance);
static MyTestRenderingFlutterBinding? _instance;
static MyTestRenderingFlutterBinding ensureInitialized() {
if (_instance != null) {
return _instance!;
}
return MyTestRenderingFlutterBinding();
}
@override
void initInstances() {
super.initInstances();
_instance = this;
}
int ensureVisualUpdateCount = 0;
@override
void ensureVisualUpdate() {
super.ensureVisualUpdate();
ensureVisualUpdateCount++;
}
}
class TestRenderObject extends RenderObject {
@override
void debugAssertDoesMeetConstraints() { }
@override
Rect get paintBounds => Rect.zero;
@override
void performLayout() { }
@override
void performResize() { }
@override
Rect get semanticBounds => Rect.zero;
}