refactor platform specific code out of device.dart

remove device type specific checks

packages/flutter_tools/lib/src/android/android.dart

+// Copyright 2016 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.
+
+const int minApiLevel = 16;
+const String minVersionName = 'Jelly Bean';
+const String minVersionText = '4.1.x';

packages/flutter_tools/lib/src/commands/apk.dart

@@ -9,12 +9,12 @@ import 'dart:io';
 import 'package:path/path.dart' as path;
 import 'package:yaml/yaml.dart';
 
+import '../android/device_android.dart';
 import '../artifacts.dart';
 import '../base/file_system.dart';
 import '../base/logging.dart';
 import '../base/process.dart';
 import '../build_configuration.dart';
-import '../device.dart';
 import '../flx.dart' as flx;
 import '../runner/flutter_command.dart';
 import 'start.dart';
@@ -392,16 +392,13 @@ class ApkCommand extends FlutterCommand {
       String mainPath = findMainDartFile(argResults['target']);
 
       // Build the FLX.
-      int result;
-      await flx.buildInTempDir(
-        toolchain,
-        mainPath: mainPath,
-        onBundleAvailable: (String localBundlePath) {
-          result = _buildApk(components, localBundlePath);
-        }
-      );
+      flx.DirectoryResult buildResult = await flx.buildInTempDir(toolchain, mainPath: mainPath);
 
-      return result;
+      try {
+        return _buildApk(components, buildResult.localBundlePath);
+      } finally {
+        buildResult.dispose();
+      }
     }
   }
 }

packages/flutter_tools/lib/src/commands/daemon.dart

@@ -7,6 +7,7 @@ import 'dart:convert';
 import 'dart:io';
 
 import '../android/adb.dart';
+import '../android/device_android.dart';
 import '../base/logging.dart';
 import '../device.dart';
 import '../runner/flutter_command.dart';

packages/flutter_tools/lib/src/commands/init.dart

@@ -9,10 +9,10 @@ import 'package:args/command_runner.dart';
 import 'package:mustache4dart/mustache4dart.dart' as mustache;
 import 'package:path/path.dart' as path;
 
+import '../android/android.dart' as android;
 import '../artifacts.dart';
 import '../base/logging.dart';
 import '../base/process.dart';
-import '../device.dart';
 
 class InitCommand extends Command {
   final String name = 'init';
@@ -247,7 +247,7 @@ final String _apkManifest = '''
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.{{projectName}}">
 
-    <uses-sdk android:minSdkVersion="${AndroidDevice.minApiLevel}" android:targetSdkVersion="21" />
+    <uses-sdk android:minSdkVersion="${android.minApiLevel}" android:targetSdkVersion="21" />
     <uses-permission android:name="android.permission.INTERNET"/>
 
     <application android:name="org.domokit.sky.shell.SkyApplication" android:label="{{projectName}}">

packages/flutter_tools/lib/src/commands/list.dart

@@ -4,7 +4,8 @@
 
 import 'dart:async';
 
-import '../device.dart';
+import '../android/device_android.dart';
+import '../ios/device_ios.dart';
 import '../runner/flutter_command.dart';
 
 class ListCommand extends FlutterCommand {
@@ -29,6 +30,8 @@ class ListCommand extends FlutterCommand {
     if (details)
       print('Android Devices:');
 
+    // TODO(devoncarew): We should have a more generic mechanism for device discovery.
+    // DeviceDiscoveryService? DeviceDiscoveryParticipant?
     for (AndroidDevice device in AndroidDevice.getAttachedDevices(devices.android)) {
       if (details) {
         print('${device.id}\t'

packages/flutter_tools/lib/src/commands/start.dart

@@ -9,9 +9,7 @@ import 'package:path/path.dart' as path;
 
 import '../application_package.dart';
 import '../base/logging.dart';
-import '../build_configuration.dart';
 import '../device.dart';
-import '../flx.dart' as flx;
 import '../runner/flutter_command.dart';
 import '../toolchain.dart';
 import 'install.dart';
@@ -138,31 +136,28 @@ Future<int> startApp(
 
     logging.fine('Running build command for $device.');
 
-    if (device.platform == TargetPlatform.android) {
-      await flx.buildInTempDir(
-        toolchain,
-        mainPath: mainPath,
-        onBundleAvailable: (String localBundlePath) {
-          logging.fine('Starting bundle for $device.');
-          final AndroidDevice androidDevice = device; // https://github.com/flutter/flutter/issues/1035
-          if (androidDevice.startBundle(package, localBundlePath,
-            poke: poke,
-            checked: checked,
-            traceStartup: traceStartup,
-            route: route,
-            clearLogs: clearLogs
-          )) {
-            startedSomething = true;
-          }
-        }
-      );
+    Map<String, dynamic> platformArgs = <String, dynamic>{};
+
+    if (poke != null)
+      platformArgs['poke'] = poke;
+    if (traceStartup != null)
+      platformArgs['trace-startup'] = traceStartup;
+    if (clearLogs != null)
+      platformArgs['clear-logs'] = clearLogs;
+
+    bool result = await device.startApp(
+      package,
+      toolchain,
+      mainPath: mainPath,
+      route: route,
+      checked: checked,
+      platformArgs: platformArgs
+    );
+
+    if (!result) {
+      logging.severe('Could not start \'${package.name}\' on \'${device.id}\'');
     } else {
-      bool result = await device.startApp(package);
-      if (!result) {
-        logging.severe('Could not start \'${package.name}\' on \'${device.id}\'');
-      } else {
-        startedSomething = true;
-      }
+      startedSomething = true;
     }
   }
 

packages/flutter_tools/lib/src/commands/trace.dart

@@ -4,9 +4,9 @@
 
 import 'dart:async';
 
+import '../android/device_android.dart';
 import '../application_package.dart';
 import '../base/logging.dart';
-import '../device.dart';
 import '../runner/flutter_command.dart';
 
 class TraceCommand extends FlutterCommand {

packages/flutter_tools/lib/src/flx.dart

@@ -114,28 +114,38 @@ ArchiveFile _createSnapshotFile(String snapshotPath) {
   return new ArchiveFile(_kSnapshotKey, content.length, content);
 }
 
-Future<int> buildInTempDir(
+/// Build the flx in a temp dir and return `localBundlePath` on success.
+Future<DirectoryResult> buildInTempDir(
   Toolchain toolchain, {
-  String mainPath: defaultMainPath,
-  void onBundleAvailable(String bundlePath)
+  String mainPath: defaultMainPath
 }) async {
   int result;
   Directory tempDir = await Directory.systemTemp.createTemp('flutter_tools');
-  try {
-    String localBundlePath = path.join(tempDir.path, 'app.flx');
-    String localSnapshotPath = path.join(tempDir.path, 'snapshot_blob.bin');
-    result = await build(
-      toolchain,
-      snapshotPath: localSnapshotPath,
-      outputPath: localBundlePath,
-      mainPath: mainPath
-    );
-    if (result == 0)
-      onBundleAvailable(localBundlePath);
-  } finally {
-    tempDir.deleteSync(recursive: true);
+  String localBundlePath = path.join(tempDir.path, 'app.flx');
+  String localSnapshotPath = path.join(tempDir.path, 'snapshot_blob.bin');
+  result = await build(
+    toolchain,
+    snapshotPath: localSnapshotPath,
+    outputPath: localBundlePath,
+    mainPath: mainPath
+  );
+  if (result == 0)
+    return new DirectoryResult(tempDir, localBundlePath);
+  else
+    throw result;
+}
+
+/// The result from [buildInTempDir]. Note that this object should be disposed after use.
+class DirectoryResult {
+  final Directory directory;
+  final String localBundlePath;
+
+  DirectoryResult(this.directory, this.localBundlePath);
+
+  /// Call this to delete the temporary directory.
+  void dispose() {
+    directory.deleteSync(recursive: true);
   }
-  return result;
 }
 
 Future<int> build(

packages/flutter_tools/test/android_device_test.dart

@@ -2,7 +2,7 @@
 // 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/device.dart';
+import 'package:flutter_tools/src/android/device_android.dart';
 import 'package:test/test.dart';
 
 main() => defineTests();

packages/flutter_tools/test/src/mocks.dart

@@ -2,9 +2,11 @@
 // 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/android/device_android.dart';
 import 'package:flutter_tools/src/application_package.dart';
 import 'package:flutter_tools/src/build_configuration.dart';
 import 'package:flutter_tools/src/device.dart';
+import 'package:flutter_tools/src/ios/device_ios.dart';
 import 'package:flutter_tools/src/runner/flutter_command.dart';
 import 'package:flutter_tools/src/toolchain.dart';
 import 'package:mockito/mockito.dart';