Add power-monitor module, fixes #45.

browser/api/atom_api_power_monitor.cc

@@ -0,0 +1,66 @@
+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "browser/api/atom_api_power_monitor.h"
+
+#include "base/power_monitor/power_monitor.h"
+
+namespace atom {
+
+namespace api {
+
+PowerMonitor::PowerMonitor(v8::Handle<v8::Object> wrapper)
+    : EventEmitter(wrapper) {
+  base::PowerMonitor::Get()->AddObserver(this);
+}
+
+PowerMonitor::~PowerMonitor() {
+  base::PowerMonitor::Get()->RemoveObserver(this);
+}
+
+void PowerMonitor::OnPowerStateChange(bool on_battery_power) {
+  if (on_battery_power)
+    Emit("on-battery");
+  else
+    Emit("on-ac");
+}
+
+void PowerMonitor::OnSuspend() {
+  Emit("suspend");
+}
+
+void PowerMonitor::OnResume() {
+  Emit("resume");
+}
+
+// static
+v8::Handle<v8::Value> PowerMonitor::New(const v8::Arguments& args) {
+  v8::HandleScope scope;
+
+  if (!args.IsConstructCall())
+    return node::ThrowError("Require constructor call");
+
+  new PowerMonitor(args.This());
+
+  return args.This();
+}
+
+// static
+void PowerMonitor::Initialize(v8::Handle<v8::Object> target) {
+  v8::HandleScope scope;
+
+  v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(
+      PowerMonitor::New);
+  t->InstanceTemplate()->SetInternalFieldCount(1);
+  t->SetClassName(v8::String::NewSymbol("PowerMonitor"));
+
+  target->Set(v8::String::NewSymbol("PowerMonitor"), t->GetFunction());
+}
+
+
+}  // namespace api
+
+}  // namespace atom
+
+NODE_MODULE(atom_browser_power_monitor, atom::api::PowerMonitor::Initialize)

browser/api/atom_api_power_monitor.h

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+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_ATOM_API_POWER_MONITOR_H_
+#define ATOM_BROWSER_API_ATOM_API_POWER_MONITOR_H_
+
+#include "browser/api/atom_api_event_emitter.h"
+
+#include "base/compiler_specific.h"
+#include "base/power_monitor/power_observer.h"
+
+namespace atom {
+
+namespace api {
+
+class PowerMonitor : public EventEmitter,
+                     public base::PowerObserver {
+ public:
+  virtual ~PowerMonitor();
+
+  static void Initialize(v8::Handle<v8::Object> target);
+
+ protected:
+  explicit PowerMonitor(v8::Handle<v8::Object> wrapper);
+
+  virtual void OnPowerStateChange(bool on_battery_power) OVERRIDE;
+  virtual void OnSuspend() OVERRIDE;
+  virtual void OnResume() OVERRIDE;
+
+ private:
+  static v8::Handle<v8::Value> New(const v8::Arguments &args);
+
+  DISALLOW_COPY_AND_ASSIGN(PowerMonitor);
+};
+
+}  // namespace api
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_API_ATOM_API_POWER_MONITOR_H_

browser/api/lib/power-monitor.coffee

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+bindings = process.atomBinding 'power_monitor'
+EventEmitter = require('events').EventEmitter
+
+PowerMonitor = bindings.PowerMonitor
+PowerMonitor::__proto__ = EventEmitter.prototype
+
+module.exports = new PowerMonitor