dart_thread 0.0.12 dart_thread: ^0.0.12 copied to clipboard
Classic thread implementation (such as TThread in Delphi). Easy to use, single code for all platforms (mapping to isolates on desktop or to workers on web).
import 'package:dart_thread/dart_thread.dart';
class TestThread extends DartThread {
// Need to mapping Class to super.init,
// because dart did not allow override a static method
static TestThread newInstance() => TestThread();
// Need to setup script name in web platform
@override
String jsFileName() {
return 'TestThread';
}
@override
messageToObject(message) {
if (message is Map<String, dynamic>) {
if (message['runtimeType'] == 'CustomClass')
return CustomClass.fromJson(message);
}
return super.messageToObject(message);
}
@override
Future<void> onExecute(Function(dynamic message) sendMessage) async {
int counter = 0;
while (true) {
sendMessage(++counter);
await Future.delayed(Duration(seconds: 1));
}
}
@override
Future<void> onGetMessage(
message, Function(dynamic message) sendMessage) async {
print('Receive message from main thread: $message');
sendMessage(message);
}
}
class CustomClass {
final int i;
final String s;
final double d;
CustomClass(this.i, this.s, this.d);
String toString() {
return '$i, $s, $d';
}
Map<String, dynamic> toJson() => {
'runtimeType': 'CustomClass',
'i': i,
's': s,
'd': d,
};
CustomClass.fromJson(Map<String, dynamic> json)
: i = json['i'],
s = json['s'],
d = json['d'];
}
void main() async {
TestThread testThread1 = TestThread();
TestThread testThread2 = TestThread();
await testThread1.init(TestThread.newInstance, (message) {
print('Receive message from testThread1: $message');
});
await testThread2.init(TestThread.newInstance, (message) {
print('Receive message from testThread2: $message');
});
testThread1.sendMessage('echo');
testThread2.sendMessage('echo');
CustomClass customClass = CustomClass(1, '1', 1.0);
testThread1.sendMessage(customClass);
testThread2.sendMessage(customClass);
await Future.delayed(Duration(seconds: 10));
testThread1.deInit();
testThread2.deInit();
}