athena: Show network and battery status in the UI.

athena/main/debug/debug_window.cc

+// Copyright 2014 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.
+
+#include "athena/main/debug/debug_window.h"
+
+#include "athena/screen/public/screen_manager.h"
+#include "base/bind.h"
+#include "base/macros.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chromeos/dbus/dbus_thread_manager.h"
+#include "chromeos/dbus/power_manager/power_supply_properties.pb.h"
+#include "chromeos/dbus/power_manager_client.h"
+#include "chromeos/network/network_state.h"
+#include "chromeos/network/network_state_handler.h"
+#include "chromeos/network/network_state_handler_observer.h"
+#include "ui/aura/window.h"
+#include "ui/views/background.h"
+#include "ui/views/border.h"
+#include "ui/views/controls/label.h"
+#include "ui/views/layout/box_layout.h"
+#include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+
+namespace {
+
+views::Label* CreateDebugLabel(const std::string& text) {
+  views::Label* label = new views::Label(base::UTF8ToUTF16(text));
+  label->SetEnabledColor(SK_ColorWHITE);
+  label->SetBackgroundColor(SK_ColorTRANSPARENT);
+  label->SetFontList(gfx::FontList().Derive(-2, gfx::Font::BOLD));
+  return label;
+}
+
+class PowerStatus : public chromeos::PowerManagerClient::Observer {
+ public:
+  PowerStatus(views::Label* label, const base::Closure& closure)
+      : label_(label), closure_(closure) {
+    chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(
+        this);
+    chromeos::DBusThreadManager::Get()
+        ->GetPowerManagerClient()
+        ->RequestStatusUpdate();
+  }
+
+  virtual ~PowerStatus() {
+    chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver(
+        this);
+  }
+
+ private:
+  // chromeos::PowerManagerClient::Observer:
+  virtual void PowerChanged(
+      const power_manager::PowerSupplyProperties& proto) OVERRIDE {
+    std::string output =
+        proto.is_calculating_battery_time()
+            ? "Calculating..."
+            : base::StringPrintf("%.1lf%%", proto.battery_percent());
+    label_->SetText(base::UTF8ToUTF16(output));
+    if (!closure_.is_null())
+      closure_.Run();
+  }
+
+  views::Label* label_;
+  base::Closure closure_;
+
+  DISALLOW_COPY_AND_ASSIGN(PowerStatus);
+};
+
+class NetworkStatus : public chromeos::NetworkStateHandlerObserver {
+ public:
+  NetworkStatus(views::Label* label, const base::Closure& closure)
+      : label_(label), closure_(closure) {
+    chromeos::NetworkStateHandler* handler =
+        chromeos::NetworkHandler::Get()->network_state_handler();
+    handler->AddObserver(this, FROM_HERE);
+  }
+
+  virtual ~NetworkStatus() {
+    chromeos::NetworkStateHandler* handler =
+        chromeos::NetworkHandler::Get()->network_state_handler();
+    handler->RemoveObserver(this, FROM_HERE);
+  }
+
+ private:
+  void Update() {
+    std::string status = "<unknown>";
+    chromeos::NetworkStateHandler* handler =
+        chromeos::NetworkHandler::Get()->network_state_handler();
+    const chromeos::NetworkState* network = handler->DefaultNetwork();
+    if (network) {
+      status = base::StringPrintf(
+          "%s (%s)", network->ip_address().c_str(), network->name().c_str());
+    }
+    label_->SetText(base::UTF8ToUTF16(status));
+    if (!closure_.is_null())
+      closure_.Run();
+  }
+
+  // chromeos::NetworkStateHandlerObserver:
+  virtual void DefaultNetworkChanged(
+      const chromeos::NetworkState* network) OVERRIDE {
+    Update();
+  }
+
+  virtual void NetworkConnectionStateChanged(
+      const chromeos::NetworkState* network) OVERRIDE {
+    Update();
+  }
+
+  virtual void NetworkPropertiesUpdated(
+      const chromeos::NetworkState* network) OVERRIDE {
+    Update();
+  }
+
+  views::Label* label_;
+  base::Closure closure_;
+};
+
+class DebugWidget {
+ public:
+  DebugWidget() : container_(NULL), widget_(NULL) {
+    CreateContainer();
+    CreateWidget();
+
+    CreateBatteryView();
+    CreateNetworkView();
+
+    UpdateSize();
+  }
+
+  virtual ~DebugWidget() {}
+
+ private:
+  void CreateContainer() {
+    container_ =
+        athena::ScreenManager::Get()->CreateContainer("DebugContainer");
+  }
+
+  void CreateWidget() {
+    views::Widget::InitParams params;
+    params.type = views::Widget::InitParams::TYPE_WINDOW_FRAMELESS;
+    params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
+    params.activatable = views::Widget::InitParams::ACTIVATABLE_NO;
+    params.accept_events = false;
+    params.bounds = gfx::Rect(200, 0, 100, 105);
+    params.parent = container_;
+    widget_ = new views::Widget();
+    widget_->Init(params);
+
+    const int kHorizontalSpacing = 10;
+    const int kBorderVerticalSpacing = 3;
+    const int kBetweenChildSpacing = 10;
+    const int kBackgroundColor = SkColorSetARGB(0x7f, 0, 0, 0);
+    views::View* container = new views::View;
+    container->SetLayoutManager(
+        new views::BoxLayout(views::BoxLayout::kHorizontal,
+                             kHorizontalSpacing,
+                             kBorderVerticalSpacing,
+                             kBetweenChildSpacing));
+    container->set_background(
+        views::Background::CreateSolidBackground(kBackgroundColor));
+    container->SetBorder(views::Border::CreateSolidBorder(1, kBackgroundColor));
+    widget_->SetContentsView(container);
+    widget_->StackAtTop();
+    widget_->Show();
+
+    widget_->SetBounds(gfx::Rect(600, 0, 300, 25));
+  }
+
+  void CreateBatteryView() {
+    views::View* container = widget_->GetContentsView();
+    container->AddChildView(CreateDebugLabel("Battery:"));
+
+    views::Label* label = CreateDebugLabel(std::string());
+    container->AddChildView(label);
+    container->Layout();
+
+    power_status_.reset(new PowerStatus(
+        label, base::Bind(&DebugWidget::UpdateSize, base::Unretained(this))));
+  }
+
+  void CreateNetworkView() {
+    views::View* container = widget_->GetContentsView();
+    container->AddChildView(CreateDebugLabel("Network:"));
+
+    views::Label* label = CreateDebugLabel(std::string());
+    container->AddChildView(label);
+    container->Layout();
+
+    network_status_.reset(new NetworkStatus(
+        label, base::Bind(&DebugWidget::UpdateSize, base::Unretained(this))));
+  }
+
+  const gfx::Rect GetPositionForSize(const gfx::Size& size) {
+    int right = container_->bounds().right();
+    int x = right - size.width();
+    return gfx::Rect(x, 0, size.width(), size.height());
+  }
+
+  void UpdateSize() {
+    views::View* container = widget_->GetContentsView();
+    container->Layout();
+    gfx::Size size = container->GetPreferredSize();
+    widget_->SetBounds(GetPositionForSize(size));
+  }
+
+  aura::Window* container_;
+  views::Widget* widget_;
+  scoped_ptr<PowerStatus> power_status_;
+  scoped_ptr<NetworkStatus> network_status_;
+
+  DISALLOW_COPY_AND_ASSIGN(DebugWidget);
+};
+
+}  // namespace
+
+void CreateDebugWindow() {
+  new DebugWidget();
+}