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// 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/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
import '../rendering/mock_canvas.dart';
import '../rendering/recording_canvas.dart';
import 'rendering_tester.dart';
class FakeEditableTextState with TextSelectionDelegate {
@override
TextEditingValue textEditingValue = const TextEditingValue();
@override
void hideToolbar() { }
@override
void bringIntoView(TextPosition position) { }
}
void main() {
test('editable intrinsics', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
final RenderEditable editable = RenderEditable(
text: const TextSpan(
style: TextStyle(height: 1.0, fontSize: 10.0, fontFamily: 'Ahem'),
text: '12345',
),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
textAlign: TextAlign.start,
textDirection: TextDirection.ltr,
locale: const Locale('ja', 'JP'),
offset: ViewportOffset.zero(),
textSelectionDelegate: delegate,
);
expect(editable.getMinIntrinsicWidth(double.infinity), 50.0);
// The width includes the width of the cursor (1.0).
expect(editable.getMaxIntrinsicWidth(double.infinity), 51.0);
expect(editable.getMinIntrinsicHeight(double.infinity), 10.0);
expect(editable.getMaxIntrinsicHeight(double.infinity), 10.0);
expect(
editable.toStringDeep(minLevel: DiagnosticLevel.info),
equalsIgnoringHashCodes(
'RenderEditable#00000 NEEDS-LAYOUT NEEDS-PAINT DETACHED\n'
' │ parentData: MISSING\n'
' │ constraints: MISSING\n'
' │ size: MISSING\n'
' │ cursorColor: null\n'
' │ showCursor: ValueNotifier<bool>#00000(false)\n'
' │ maxLines: 1\n'
' │ minLines: null\n'
' │ selectionColor: null\n'
' │ textScaleFactor: 1.0\n'
' │ locale: ja_JP\n'
' │ selection: null\n'
' │ offset: _FixedViewportOffset#00000(offset: 0.0)\n'
' ╘═╦══ text ═══\n'
' ║ TextSpan:\n'
' ║ inherit: true\n'
' ║ family: Ahem\n'
' ║ size: 10.0\n'
' ║ height: 1.0x\n'
' ║ "12345"\n'
' ╚═══════════\n'
),
);
}, skip: isBrowser);
// Test that clipping will be used even when the text fits within the visible
// region if the start position of the text is offset (e.g. during scrolling
// animation).
test('correct clipping', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
final RenderEditable editable = RenderEditable(
text: const TextSpan(
style: TextStyle(height: 1.0, fontSize: 10.0, fontFamily: 'Ahem'),
text: 'A',
),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
textAlign: TextAlign.start,
textDirection: TextDirection.ltr,
locale: const Locale('en', 'US'),
offset: ViewportOffset.fixed(10.0),
textSelectionDelegate: delegate,
selection: const TextSelection.collapsed(
offset: 0,
),
);
editable.layout(BoxConstraints.loose(const Size(1000.0, 1000.0)));
expect(
(Canvas canvas) => editable.paint(TestRecordingPaintingContext(canvas), Offset.zero),
paints..clipRect(rect: const Rect.fromLTRB(0.0, 0.0, 1000.0, 10.0)),
);
});
test('Can change cursor color, radius, visibility', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
final ValueNotifier<bool> showCursor = ValueNotifier<bool>(true);
EditableText.debugDeterministicCursor = true;
final RenderEditable editable = RenderEditable(
backgroundCursorColor: Colors.grey,
textDirection: TextDirection.ltr,
cursorColor: const Color.fromARGB(0xFF, 0xFF, 0x00, 0x00),
offset: ViewportOffset.zero(),
textSelectionDelegate: delegate,
text: const TextSpan(
text: 'test',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
selection: const TextSelection.collapsed(
offset: 4,
affinity: TextAffinity.upstream,
),
);
layout(editable);
editable.layout(BoxConstraints.loose(const Size(100, 100)));
expect(
editable,
// Draw no cursor by default.
paintsExactlyCountTimes(#drawRect, 0),
);
editable.showCursor = showCursor;
pumpFrame();
expect(editable, paints..rect(
color: const Color.fromARGB(0xFF, 0xFF, 0x00, 0x00),
rect: const Rect.fromLTWH(40, 0, 1, 10),
));
// Now change to a rounded caret.
editable.cursorColor = const Color.fromARGB(0xFF, 0x00, 0x00, 0xFF);
editable.cursorWidth = 4;
editable.cursorRadius = const Radius.circular(3);
pumpFrame();
expect(editable, paints..rrect(
color: const Color.fromARGB(0xFF, 0x00, 0x00, 0xFF),
rrect: RRect.fromRectAndRadius(
const Rect.fromLTWH(40, 0, 4, 10),
const Radius.circular(3),
),
));
editable.textScaleFactor = 2;
pumpFrame();
// Now the caret height is much bigger due to the bigger font scale.
expect(editable, paints..rrect(
color: const Color.fromARGB(0xFF, 0x00, 0x00, 0xFF),
rrect: RRect.fromRectAndRadius(
const Rect.fromLTWH(80, 0, 4, 20),
const Radius.circular(3),
),
));
// Can turn off caret.
showCursor.value = false;
pumpFrame();
expect(editable, paintsExactlyCountTimes(#drawRRect, 0));
}, skip: isBrowser);
test('Can change textAlign', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
final RenderEditable editable = RenderEditable(
textAlign: TextAlign.start,
textDirection: TextDirection.ltr,
offset: ViewportOffset.zero(),
textSelectionDelegate: delegate,
text: const TextSpan(text: 'test'),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
);
layout(editable);
editable.layout(BoxConstraints.loose(const Size(100, 100)));
expect(editable.textAlign, TextAlign.start);
expect(editable.debugNeedsLayout, isFalse);
editable.textAlign = TextAlign.center;
expect(editable.textAlign, TextAlign.center);
expect(editable.debugNeedsLayout, isTrue);
});
test('Cursor with ideographic script', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
final ValueNotifier<bool> showCursor = ValueNotifier<bool>(true);
EditableText.debugDeterministicCursor = true;
final RenderEditable editable = RenderEditable(
backgroundCursorColor: Colors.grey,
textDirection: TextDirection.ltr,
cursorColor: const Color.fromARGB(0xFF, 0xFF, 0x00, 0x00),
offset: ViewportOffset.zero(),
textSelectionDelegate: delegate,
text: const TextSpan(
text: '中文测试文本是否正确',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
selection: const TextSelection.collapsed(
offset: 4,
affinity: TextAffinity.upstream,
),
);
layout(editable);
editable.layout(BoxConstraints.loose(const Size(100, 100)));
expect(
editable,
// Draw no cursor by default.
paintsExactlyCountTimes(#drawRect, 0),
);
editable.showCursor = showCursor;
pumpFrame();
expect(editable, paints..rect(
color: const Color.fromARGB(0xFF, 0xFF, 0x00, 0x00),
rect: const Rect.fromLTWH(40, 0, 1, 10),
));
// Now change to a rounded caret.
editable.cursorColor = const Color.fromARGB(0xFF, 0x00, 0x00, 0xFF);
editable.cursorWidth = 4;
editable.cursorRadius = const Radius.circular(3);
pumpFrame();
expect(editable, paints..rrect(
color: const Color.fromARGB(0xFF, 0x00, 0x00, 0xFF),
rrect: RRect.fromRectAndRadius(
const Rect.fromLTWH(40, 0, 4, 10),
const Radius.circular(3),
),
));
editable.textScaleFactor = 2;
pumpFrame();
// Now the caret height is much bigger due to the bigger font scale.
expect(editable, paints..rrect(
color: const Color.fromARGB(0xFF, 0x00, 0x00, 0xFF),
rrect: RRect.fromRectAndRadius(
const Rect.fromLTWH(80, 0, 4, 20),
const Radius.circular(3),
),
));
// Can turn off caret.
showCursor.value = false;
pumpFrame();
expect(editable, paintsExactlyCountTimes(#drawRRect, 0));
}, skip: isBrowser);
test('text is painted above selection', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
final RenderEditable editable = RenderEditable(
backgroundCursorColor: Colors.grey,
selectionColor: Colors.black,
textDirection: TextDirection.ltr,
cursorColor: Colors.red,
offset: ViewportOffset.zero(),
textSelectionDelegate: delegate,
text: const TextSpan(
text: 'test',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
selection: const TextSelection(
baseOffset: 0,
extentOffset: 3,
affinity: TextAffinity.upstream,
),
);
layout(editable);
expect(
editable,
paints
// Check that it's the black selection box, not the red cursor.
..rect(color: Colors.black)
..paragraph(),
);
// There is exactly one rect paint (1 selection, 0 cursor).
expect(editable, paintsExactlyCountTimes(#drawRect, 1));
});
test('cursor can paint above or below the text', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
final ValueNotifier<bool> showCursor = ValueNotifier<bool>(true);
final RenderEditable editable = RenderEditable(
backgroundCursorColor: Colors.grey,
selectionColor: Colors.black,
paintCursorAboveText: true,
textDirection: TextDirection.ltr,
cursorColor: Colors.red,
showCursor: showCursor,
offset: ViewportOffset.zero(),
textSelectionDelegate: delegate,
text: const TextSpan(
text: 'test',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
selection: const TextSelection.collapsed(
offset: 2,
affinity: TextAffinity.upstream,
),
);
layout(editable);
expect(
editable,
paints
..paragraph()
// Red collapsed cursor is painted, not a selection box.
..rect(color: Colors.red[500]),
);
// There is exactly one rect paint (0 selection, 1 cursor).
expect(editable, paintsExactlyCountTimes(#drawRect, 1));
editable.paintCursorAboveText = false;
pumpFrame();
expect(
editable,
// The paint order is now flipped.
paints
..rect(color: Colors.red[500])
..paragraph(),
);
expect(editable, paintsExactlyCountTimes(#drawRect, 1));
}, skip: isBrowser);
test('ignore key event from web platform', () async {
final TextSelectionDelegate delegate = FakeEditableTextState();
final ViewportOffset viewportOffset = ViewportOffset.zero();
TextSelection currentSelection;
final RenderEditable editable = RenderEditable(
backgroundCursorColor: Colors.grey,
selectionColor: Colors.black,
textDirection: TextDirection.ltr,
cursorColor: Colors.red,
offset: viewportOffset,
// This makes the scroll axis vertical.
maxLines: 2,
textSelectionDelegate: delegate,
onSelectionChanged: (TextSelection selection, RenderEditable renderObject, SelectionChangedCause cause) {
currentSelection = selection;
},
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
text: const TextSpan(
text: 'test\ntest',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
),
selection: const TextSelection.collapsed(
offset: 4,
),
);
layout(editable);
editable.hasFocus = true;
expect(
editable,
paints..paragraph(offset: Offset.zero),
);
editable.selectPositionAt(from: const Offset(0, 0), cause: SelectionChangedCause.tap);
editable.selection = const TextSelection.collapsed(offset: 0);
pumpFrame();
if(kIsWeb) {
await simulateKeyDownEvent(LogicalKeyboardKey.arrowRight, platform: 'web');
expect(currentSelection.isCollapsed, true);
expect(currentSelection.baseOffset, 0);
} else {
await simulateKeyDownEvent(LogicalKeyboardKey.arrowRight, platform: 'android');
expect(currentSelection.isCollapsed, true);
expect(currentSelection.baseOffset, 1);
}
});
test('selects correct place with offsets', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
final ViewportOffset viewportOffset = ViewportOffset.zero();
TextSelection currentSelection;
final RenderEditable editable = RenderEditable(
backgroundCursorColor: Colors.grey,
selectionColor: Colors.black,
textDirection: TextDirection.ltr,
cursorColor: Colors.red,
offset: viewportOffset,
// This makes the scroll axis vertical.
maxLines: 2,
textSelectionDelegate: delegate,
onSelectionChanged: (TextSelection selection, RenderEditable renderObject, SelectionChangedCause cause) {
currentSelection = selection;
},
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
text: const TextSpan(
text: 'test\ntest',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
),
selection: const TextSelection.collapsed(
offset: 4,
),
);
layout(editable);
expect(
editable,
paints..paragraph(offset: Offset.zero),
);
editable.selectPositionAt(from: const Offset(0, 2), cause: SelectionChangedCause.tap);
pumpFrame();
expect(currentSelection.isCollapsed, true);
expect(currentSelection.baseOffset, 0);
viewportOffset.correctBy(10);
pumpFrame();
expect(
editable,
paints..paragraph(offset: const Offset(0, -10)),
);
// Tap the same place. But because the offset is scrolled up, the second line
// gets tapped instead.
editable.selectPositionAt(from: const Offset(0, 2), cause: SelectionChangedCause.tap);
pumpFrame();
expect(currentSelection.isCollapsed, true);
expect(currentSelection.baseOffset, 5);
// Test the other selection methods.
// Move over by one character.
editable.handleTapDown(TapDownDetails(globalPosition: const Offset(10, 2)));
pumpFrame();
editable.selectPosition(cause:SelectionChangedCause.tap);
pumpFrame();
expect(currentSelection.isCollapsed, true);
expect(currentSelection.baseOffset, 6);
editable.handleTapDown(TapDownDetails(globalPosition: const Offset(20, 2)));
pumpFrame();
editable.selectWord(cause:SelectionChangedCause.longPress);
pumpFrame();
expect(currentSelection.isCollapsed, false);
expect(currentSelection.baseOffset, 5);
expect(currentSelection.extentOffset, 9);
// Select one more character down but since it's still part of the same
// word, the same word is selected.
editable.selectWordsInRange(from: const Offset(30, 2), cause:SelectionChangedCause.longPress);
pumpFrame();
expect(currentSelection.isCollapsed, false);
expect(currentSelection.baseOffset, 5);
expect(currentSelection.extentOffset, 9);
}, skip: isBrowser);
test('selects correct place when offsets are flipped', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
final ViewportOffset viewportOffset = ViewportOffset.zero();
TextSelection currentSelection;
final RenderEditable editable = RenderEditable(
backgroundCursorColor: Colors.grey,
selectionColor: Colors.black,
textDirection: TextDirection.ltr,
cursorColor: Colors.red,
offset: viewportOffset,
textSelectionDelegate: delegate,
onSelectionChanged: (TextSelection selection, RenderEditable renderObject, SelectionChangedCause cause) {
currentSelection = selection;
},
text: const TextSpan(
text: 'abc def ghi',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
);
layout(editable);
editable.selectPositionAt(from: const Offset(30, 2), to: const Offset(10, 2), cause: SelectionChangedCause.drag);
pumpFrame();
expect(currentSelection.isCollapsed, isFalse);
expect(currentSelection.baseOffset, 1);
expect(currentSelection.extentOffset, 3);
}, skip: isBrowser);
test('selection does not flicker as user is dragging', () {
int selectionChangedCount = 0;
TextSelection updatedSelection;
final TextSelectionDelegate delegate = FakeEditableTextState();
const TextSpan text = TextSpan(
text: 'abc def ghi',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
);
final RenderEditable editable1 = RenderEditable(
textSelectionDelegate: delegate,
textDirection: TextDirection.ltr,
offset: ViewportOffset.zero(),
selection: const TextSelection(baseOffset: 3, extentOffset: 4),
onSelectionChanged: (TextSelection selection, RenderEditable renderObject, SelectionChangedCause cause) {
selectionChangedCount++;
updatedSelection = selection;
},
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
text: text,
);
layout(editable1);
// Shouldn't cause a selection change.
editable1.selectPositionAt(from: const Offset(30, 2), to: const Offset(42, 2), cause: SelectionChangedCause.drag);
pumpFrame();
expect(updatedSelection, isNull);
expect(selectionChangedCount, 0);
final RenderEditable editable2 = RenderEditable(
textSelectionDelegate: delegate,
textDirection: TextDirection.ltr,
offset: ViewportOffset.zero(),
selection: const TextSelection(baseOffset: 3, extentOffset: 4),
onSelectionChanged: (TextSelection selection, RenderEditable renderObject, SelectionChangedCause cause) {
selectionChangedCount++;
updatedSelection = selection;
},
text: text,
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
);
layout(editable2);
// Now this should cause a selection change.
editable2.selectPositionAt(from: const Offset(30, 2), to: const Offset(48, 2), cause: SelectionChangedCause.drag);
pumpFrame();
expect(updatedSelection.baseOffset, 3);
expect(updatedSelection.extentOffset, 5);
expect(selectionChangedCount, 1);
}, skip: isBrowser);
test('promptRect disappears when promptRectColor is set to null', () {
const Color promptRectColor = Color(0x12345678);
final TextSelectionDelegate delegate = FakeEditableTextState();
final RenderEditable editable = RenderEditable(
text: const TextSpan(
style: TextStyle(height: 1.0, fontSize: 10.0, fontFamily: 'Ahem'),
text: 'ABCDEFG',
),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
textAlign: TextAlign.start,
textDirection: TextDirection.ltr,
locale: const Locale('en', 'US'),
offset: ViewportOffset.fixed(10.0),
textSelectionDelegate: delegate,
selection: const TextSelection.collapsed(offset: 0),
promptRectColor: promptRectColor,
promptRectRange: const TextRange(start: 0, end: 1),
);
editable.layout(BoxConstraints.loose(const Size(1000.0, 1000.0)));
expect(
(Canvas canvas) => editable.paint(TestRecordingPaintingContext(canvas), Offset.zero),
paints..rect(color: promptRectColor),
);
editable.promptRectColor = null;
editable.layout(BoxConstraints.loose(const Size(1000.0, 1000.0)));
pumpFrame();
expect(editable.promptRectColor, promptRectColor);
expect(
(Canvas canvas) => editable.paint(TestRecordingPaintingContext(canvas), Offset.zero),
isNot(paints..rect(color: promptRectColor)),
);
});
test('editable hasFocus correctly initialized', () {
// Regression test for https://github.com/flutter/flutter/issues/21640
final TextSelectionDelegate delegate = FakeEditableTextState();
final RenderEditable editable = RenderEditable(
text: const TextSpan(
style: TextStyle(height: 1.0, fontSize: 10.0, fontFamily: 'Ahem'),
text: '12345',
),
textAlign: TextAlign.start,
textDirection: TextDirection.ltr,
locale: const Locale('en', 'US'),
offset: ViewportOffset.zero(),
textSelectionDelegate: delegate,
hasFocus: true,
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
);
expect(editable.hasFocus, true);
editable.hasFocus = false;
expect(editable.hasFocus, false);
});
test('has correct maxScrollExtent', () {
final TextSelectionDelegate delegate = FakeEditableTextState();
EditableText.debugDeterministicCursor = true;
final RenderEditable editable = RenderEditable(
maxLines: 2,
backgroundCursorColor: Colors.grey,
textDirection: TextDirection.ltr,
cursorColor: const Color.fromARGB(0xFF, 0xFF, 0x00, 0x00),
offset: ViewportOffset.zero(),
textSelectionDelegate: delegate,
text: const TextSpan(
text: '撒地方加咖啡哈金凤凰卡号方式剪坏算法发挥福建垃\nasfjafjajfjaslfjaskjflasjfksajf撒分开建安路口附近拉设\n计费可使肌肤撒附近埃里克圾房卡设计费"',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Roboto',
),
),
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
selection: const TextSelection.collapsed(
offset: 4,
affinity: TextAffinity.upstream,
),
);
editable.layout(BoxConstraints.loose(const Size(100.0, 1000.0)));
expect(editable.size, equals(const Size(100, 20)));
expect(editable.maxLines, equals(2));
expect(editable.maxScrollExtent, equals(90));
editable.layout(BoxConstraints.loose(const Size(150.0, 1000.0)));
expect(editable.maxScrollExtent, equals(50));
editable.layout(BoxConstraints.loose(const Size(200.0, 1000.0)));
expect(editable.maxScrollExtent, equals(40));
editable.layout(BoxConstraints.loose(const Size(500.0, 1000.0)));
expect(editable.maxScrollExtent, equals(10));
editable.layout(BoxConstraints.loose(const Size(1000.0, 1000.0)));
expect(editable.maxScrollExtent, equals(10));
}, skip: isBrowser); // TODO(yjbanov): https://github.com/flutter/flutter/issues/42772
test('arrow keys and delete handle simple text correctly', () async {
final TextSelectionDelegate delegate = FakeEditableTextState();
final ViewportOffset viewportOffset = ViewportOffset.zero();
TextSelection currentSelection;
final RenderEditable editable = RenderEditable(
backgroundCursorColor: Colors.grey,
selectionColor: Colors.black,
textDirection: TextDirection.ltr,
cursorColor: Colors.red,
offset: viewportOffset,
textSelectionDelegate: delegate,
onSelectionChanged: (TextSelection selection, RenderEditable renderObject, SelectionChangedCause cause) {
currentSelection = selection;
},
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
text: const TextSpan(
text: 'test',
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
),
selection: const TextSelection.collapsed(
offset: 0,
),
);
layout(editable);
editable.hasFocus = true;
editable.selectPositionAt(from: const Offset(0, 0), cause: SelectionChangedCause.tap);
editable.selection = const TextSelection.collapsed(offset: 0);
pumpFrame();
await simulateKeyDownEvent(LogicalKeyboardKey.arrowRight, platform: 'android');
await simulateKeyUpEvent(LogicalKeyboardKey.arrowRight, platform: 'android');
expect(currentSelection.isCollapsed, true);
expect(currentSelection.baseOffset, 1);
await simulateKeyDownEvent(LogicalKeyboardKey.arrowLeft, platform: 'android');
await simulateKeyUpEvent(LogicalKeyboardKey.arrowLeft, platform: 'android');
expect(currentSelection.isCollapsed, true);
expect(currentSelection.baseOffset, 0);
await simulateKeyDownEvent(LogicalKeyboardKey.delete, platform: 'android');
await simulateKeyUpEvent(LogicalKeyboardKey.delete, platform: 'android');
expect(delegate.textEditingValue.text, 'est');
}, skip: kIsWeb);
test('arrow keys and delete handle surrogate pairs correctly', () async {
final TextSelectionDelegate delegate = FakeEditableTextState();
final ViewportOffset viewportOffset = ViewportOffset.zero();
TextSelection currentSelection;
final RenderEditable editable = RenderEditable(
backgroundCursorColor: Colors.grey,
selectionColor: Colors.black,
textDirection: TextDirection.ltr,
cursorColor: Colors.red,
offset: viewportOffset,
textSelectionDelegate: delegate,
onSelectionChanged: (TextSelection selection, RenderEditable renderObject, SelectionChangedCause cause) {
currentSelection = selection;
},
startHandleLayerLink: LayerLink(),
endHandleLayerLink: LayerLink(),
text: const TextSpan(
text: '\u{1F44D}', // Thumbs up
style: TextStyle(
height: 1.0, fontSize: 10.0, fontFamily: 'Ahem',
),
),
selection: const TextSelection.collapsed(
offset: 0,
),
);
layout(editable);
editable.hasFocus = true;
editable.selectPositionAt(from: const Offset(0, 0), cause: SelectionChangedCause.tap);
editable.selection = const TextSelection.collapsed(offset: 0);
pumpFrame();
await simulateKeyDownEvent(LogicalKeyboardKey.arrowRight, platform: 'android');
await simulateKeyUpEvent(LogicalKeyboardKey.arrowRight, platform: 'android');
expect(currentSelection.isCollapsed, true);
expect(currentSelection.baseOffset, 2);
await simulateKeyDownEvent(LogicalKeyboardKey.arrowLeft, platform: 'android');
await simulateKeyUpEvent(LogicalKeyboardKey.arrowLeft, platform: 'android');
expect(currentSelection.isCollapsed, true);
expect(currentSelection.baseOffset, 0);
await simulateKeyDownEvent(LogicalKeyboardKey.delete, platform: 'android');
await simulateKeyUpEvent(LogicalKeyboardKey.delete, platform: 'android');
expect(delegate.textEditingValue.text, '');
}, skip: kIsWeb); // Key simulation doesn't work on web.
}