Import from exported file

Summary:
This diff adds the feature to import the exported flipper data. It has the following features

- Dialog to select the file
- Merges the data with an existing store.

Reviewed By: danielbuechele

Differential Revision: D13901944

fbshipit-source-id: 1b9755735419732a34254bdc39d911bcb51ad8fe

src/devices/AndroidDevice.js

@@ -78,7 +78,7 @@ export default class AndroidDevice extends BaseDevice {
     });
   }
 
-  spawnShell(): DeviceShell {
+  spawnShell(): ?DeviceShell {
     return child_process.spawn('adb', ['-s', this.serial, 'shell', '-t', '-t']);
   }
 }

src/devices/ArchivedDevice.js

@@ -0,0 +1,23 @@
+/**
+ * Copyright 2018-present Facebook.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ * @format
+ */
+import BaseDevice from './BaseDevice.js';
+import type {DeviceType, OS, DeviceShell} from './BaseDevice.js';
+
+export default class ArchivedDevice extends BaseDevice {
+  constructor(serial: string, deviceType: DeviceType, title: string, os: OS) {
+    super(serial, deviceType, title);
+    this.os = os;
+  }
+
+  getLogs() {
+    return [];
+  }
+
+  spawnShell(): ?DeviceShell {
+    return null;
+  }
+}

src/devices/BaseDevice.js

@@ -86,7 +86,7 @@ export default class BaseDevice {
   teardown() {}
 
   supportedColumns(): Array<string> {
-    throw new Error('unimplemented');
+    return ['date', 'pid', 'tid', 'tag', 'message', 'type', 'time'];
   }
 
   addLogListener(callback: DeviceLogListener): Symbol {
@@ -117,7 +117,7 @@ export default class BaseDevice {
     this.logListeners.delete(id);
   }
 
-  spawnShell(): DeviceShell {
+  spawnShell(): ?DeviceShell {
     throw new Error('unimplemented');
   }
 }