1 files changed, 74 insertions, 0 deletions
diff --git a/devtools/server/actors/device.js b/devtools/server/actors/device.js
new file mode 100644
index 0000000000..2aa05959e5
--- /dev/null
+++ b/devtools/server/actors/device.js
@@ -0,0 +1,74 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const { Actor } = require("resource://devtools/shared/protocol.js");
+const { deviceSpec } = require("resource://devtools/shared/specs/device.js");
+
+const {
+  DevToolsServer,
+} = require("resource://devtools/server/devtools-server.js");
+const { getSystemInfo } = require("resource://devtools/shared/system.js");
+const { AppConstants } = ChromeUtils.importESModule(
+  "resource://gre/modules/AppConstants.sys.mjs"
+);
+
+exports.DeviceActor = class DeviceActor extends Actor {
+  constructor(conn) {
+    super(conn, deviceSpec);
+    // pageshow and pagehide event release wake lock, so we have to acquire
+    // wake lock again by pageshow event
+    this._onPageShow = this._onPageShow.bind(this);
+    if (this._window) {
+      this._window.addEventListener("pageshow", this._onPageShow, true);
+    }
+    this._acquireWakeLock();
+  }
+
+  destroy() {
+    super.destroy();
+    this._releaseWakeLock();
+    if (this._window) {
+      this._window.removeEventListener("pageshow", this._onPageShow, true);
+    }
+  }
+
+  getDescription() {
+    return Object.assign({}, getSystemInfo(), {
+      canDebugServiceWorkers: true,
+    });
+  }
+
+  _acquireWakeLock() {
+    if (AppConstants.platform !== "android") {
+      return;
+    }
+
+    const pm = Cc["@mozilla.org/power/powermanagerservice;1"].getService(
+      Ci.nsIPowerManagerService
+    );
+    this._wakelock = pm.newWakeLock("screen", this._window);
+  }
+
+  _releaseWakeLock() {
+    if (this._wakelock) {
+      try {
+        this._wakelock.unlock();
+      } catch (e) {
+        // Ignore error since wake lock is already unlocked
+      }
+      this._wakelock = null;
+    }
+  }
+
+  _onPageShow() {
+    this._releaseWakeLock();
+    this._acquireWakeLock();
+  }
+
+  get _window() {
+    return Services.wm.getMostRecentWindow(DevToolsServer.chromeWindowType);
+  }
+};