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update doc

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ekibun
2020-08-20 14:57:07 +08:00
parent 805f261880
commit 204f2411e5
7 changed files with 182 additions and 167 deletions
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89
lib/flutter_qjs.dart
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@@ -1,31 +1,73 @@
/*
* @Description:
* @Description: quickjs engine
* @Author: ekibun
* @Date: 2020-08-08 08:29:09
* @LastEditors: ekibun
* @LastEditTime: 2020-08-20 12:49:46
* @LastEditTime: 2020-08-20 14:43:40
*/
import 'dart:async';
import 'dart:io';
import 'package:flutter/services.dart';
/// Handle function to manage js call with `dart(method, ...args)` function.
typedef JsMethodHandler = Future<dynamic> Function(String method, List args);
/// return this in [JsMethodHandler] to mark method not implemented.
class JsMethodHandlerNotImplement {}
/// FlutterJs instance.
/// Each [FlutterJs] object creates a new thread that runs a simple js loop.
/// Make sure call `destroy` to terminate thread and release memory when you don't need it.
class FlutterJs {
dynamic _engine;
_ensureEngine() async {
if (_engine == null) {
_engine = await _FlutterJs.instance._channel.invokeMethod("createEngine");
print(_engine);
}
}
/// Set a handler to manage js call with `dart(method, ...args)` function.
setMethodHandler(JsMethodHandler handler) async {
await _ensureEngine();
_FlutterJs.instance.methodHandlers[_engine] = handler;
}
/// Terminate thread and release memory.
destroy() async {
if (_engine != null) {
await _FlutterJs.instance._channel
.invokeMethod("close", {"engine": _engine});
_engine = null;
}
}
/// Evaluate js script.
Future<dynamic> evaluate(String command, String name) async {
_ensureEngine();
var arguments = {"engine": _engine, "script": command, "name": name};
return _FlutterJs.instance._wrapFunctionArguments(
await _FlutterJs.instance._channel.invokeMethod("evaluate", arguments),
_engine);
}
}
class _FlutterJs {
factory _FlutterJs() => _getInstance();
static _FlutterJs get instance => _getInstance();
static _FlutterJs _instance;
MethodChannel _channel = const MethodChannel('soko.ekibun.flutter_qjs');
Map<dynamic, JsMethodHandler> methodHandlers = Map<dynamic, JsMethodHandler>();
Map<dynamic, JsMethodHandler> methodHandlers =
Map<dynamic, JsMethodHandler>();
_FlutterJs._internal() {
_channel.setMethodCallHandler((call) async {
print(call.arguments);
var engine = call.arguments["engine"];
var args = call.arguments["args"];
if (methodHandlers[engine] == null) return call.noSuchMethod(null);
var ret = await methodHandlers[engine](call.method, _wrapFunctionArguments(args, engine));
var ret = await methodHandlers[engine](
call.method, _wrapFunctionArguments(args, engine));
if (ret is JsMethodHandlerNotImplement) return call.noSuchMethod(null);
return ret;
});
@@ -43,8 +85,13 @@ class _FlutterJs {
if (val["__js_function__"] != null) {
var functionId = val["__js_function__"];
return (List<dynamic> args) async {
var arguments = {"engine": engine, "function": functionId, "arguments": args};
return _wrapFunctionArguments(await _channel.invokeMethod("call", arguments), engine);
var arguments = {
"engine": engine,
"function": functionId,
"arguments": args
};
return _wrapFunctionArguments(
await _channel.invokeMethod("call", arguments), engine);
};
} else
for (var key in val.keys) {
@@ -61,33 +108,3 @@ class _FlutterJs {
return _instance;
}
}
class FlutterJs {
dynamic _engine;
_ensureEngine() async {
if (_engine == null) {
_engine = await _FlutterJs.instance._channel.invokeMethod("createEngine");
print(_engine);
}
}
setMethodHandler(JsMethodHandler handler) async {
await _ensureEngine();
_FlutterJs.instance.methodHandlers[_engine] = handler;
}
destroy() async {
if (_engine != null) {
await _FlutterJs.instance._channel.invokeMethod("close", {"engine": _engine});
_engine = null;
}
}
Future<dynamic> evaluate(String command, String name) async {
_ensureEngine();
var arguments = {"engine": _engine, "script": command, "name": "<eval>"};
return _FlutterJs.instance._wrapFunctionArguments(
await _FlutterJs.instance._channel.invokeMethod("evaluate", arguments), _engine);
}
}