| // Copyright 2018 The Chromium 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_tools/src/base/file_system.dart'; |
| |
| import '../test_utils.dart'; |
| import 'project.dart'; |
| |
| class HotReloadProject extends Project { |
| @override |
| final String pubspec = ''' |
| name: test |
| environment: |
| sdk: ">=2.0.0-dev.68.0 <3.0.0" |
| |
| dependencies: |
| flutter: |
| sdk: flutter |
| '''; |
| |
| @override |
| final String main = r''' |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/scheduler.dart'; |
| |
| void main() => runApp(new MyApp()); |
| |
| int count = 1; |
| |
| class MyApp extends StatelessWidget { |
| @override |
| Widget build(BuildContext context) { |
| // This method gets called each time we hot reload, during reassemble. |
| |
| // Do not remove the next line, it's uncommented by a test to verify that |
| // hot reloading worked: |
| // printHotReloadWorked(); |
| |
| print('((((TICK $count))))'); |
| // tick 1 = startup warmup frame |
| // tick 2 = hot reload warmup reassemble frame |
| // after that there's a post-hot-reload frame scheduled by the tool that |
| // doesn't trigger this to rebuild, but does trigger the first callback |
| // below, then that callback schedules another frame on which we do the |
| // breakpoint. |
| // tick 3 = second hot reload warmup reassemble frame (pre breakpoint) |
| if (count == 2) { |
| SchedulerBinding.instance.scheduleFrameCallback((Duration timestamp) { |
| SchedulerBinding.instance.scheduleFrameCallback((Duration timestamp) { |
| print('breakpoint line'); // SCHEDULED BREAKPOINT |
| }); |
| }); |
| } |
| count += 1; |
| |
| return MaterialApp( // BUILD BREAKPOINT |
| title: 'Flutter Demo', |
| home: Container(), |
| ); |
| } |
| } |
| |
| void printHotReloadWorked() { |
| // The call to this function is uncommented by a test to verify that hot |
| // reloading worked. |
| print('(((((RELOAD WORKED)))))'); |
| } |
| '''; |
| |
| Uri get scheduledBreakpointUri => mainDart; |
| int get scheduledBreakpointLine => lineContaining(main, '// SCHEDULED BREAKPOINT'); |
| |
| Uri get buildBreakpointUri => mainDart; |
| int get buildBreakpointLine => lineContaining(main, '// BUILD BREAKPOINT'); |
| |
| void uncommentHotReloadPrint() { |
| final String newMainContents = main.replaceAll( |
| '// printHotReloadWorked();', |
| 'printHotReloadWorked();', |
| ); |
| writeFile(fs.path.join(dir.path, 'lib', 'main.dart'), newMainContents); |
| } |
| } |