athena: Add a network-selector widget.

athena/main/debug/network_selector.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/network_selector.h"
+
+#include "base/memory/weak_ptr.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chromeos/network/network_configuration_handler.h"
+#include "chromeos/network/network_connection_handler.h"
+#include "chromeos/network/network_handler.h"
+#include "chromeos/network/network_profile_handler.h"
+#include "chromeos/network/network_state.h"
+#include "chromeos/network/network_state_handler.h"
+#include "chromeos/network/network_state_handler_observer.h"
+#include "chromeos/network/network_type_pattern.h"
+#include "third_party/cros_system_api/dbus/service_constants.h"
+#include "ui/aura/window.h"
+#include "ui/chromeos/network/network_icon.h"
+#include "ui/chromeos/network/network_info.h"
+#include "ui/chromeos/network/network_list.h"
+#include "ui/chromeos/network/network_list_delegate.h"
+#include "ui/compositor/layer.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/font.h"
+#include "ui/gfx/font_list.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/text_constants.h"
+#include "ui/views/background.h"
+#include "ui/views/border.h"
+#include "ui/views/controls/button/blue_button.h"
+#include "ui/views/controls/button/button.h"
+#include "ui/views/controls/image_view.h"
+#include "ui/views/controls/label.h"
+#include "ui/views/controls/scroll_view.h"
+#include "ui/views/controls/textfield/textfield.h"
+#include "ui/views/layout/box_layout.h"
+#include "ui/views/layout/fill_layout.h"
+#include "ui/views/widget/widget.h"
+
+using chromeos::NetworkConfigurationHandler;
+using chromeos::NetworkConnectionHandler;
+using chromeos::NetworkHandler;
+using chromeos::NetworkProfileHandler;
+using chromeos::NetworkState;
+
+namespace {
+
+const int kBackgroundColor = SkColorSetARGB(0x7f, 0, 0, 0);
+const int kBackgroundColorLighter = SkColorSetARGB(0x2f, 0, 0, 0);
+
+// The View for the user to enter the password for connceting to a network. This
+// view also shows an error message if the network connection fails.
+class PasswordView : public views::View, public views::ButtonListener {
+ public:
+  PasswordView(const ui::NetworkInfo& network,
+               const base::Callback<void(bool)>& callback,
+               views::View* parent_container)
+      : network_(network),
+        callback_(callback),
+        parent_container_(parent_container),
+        connect_(NULL),
+        cancel_(NULL),
+        textfield_(NULL),
+        error_msg_(NULL),
+        weak_ptr_(this) {
+    const int kHorizontal = 5;
+    const int kVertical = 0;
+    const int kPadding = 0;
+
+    views::BoxLayout* layout = new views::BoxLayout(
+        views::BoxLayout::kVertical, kHorizontal, kVertical, kPadding);
+    layout->set_main_axis_alignment(
+        views::BoxLayout::MAIN_AXIS_ALIGNMENT_START);
+    layout->set_cross_axis_alignment(
+        views::BoxLayout::CROSS_AXIS_ALIGNMENT_STRETCH);
+    SetLayoutManager(layout);
+
+    views::View* container = new views::View;
+    layout = new views::BoxLayout(
+        views::BoxLayout::kHorizontal, kHorizontal, kVertical, kPadding);
+    layout->set_main_axis_alignment(
+        views::BoxLayout::MAIN_AXIS_ALIGNMENT_START);
+    container->SetLayoutManager(layout);
+
+    textfield_ = new views::Textfield();
+    textfield_->set_placeholder_text(base::ASCIIToUTF16("Password"));
+    textfield_->SetTextInputType(ui::TEXT_INPUT_TYPE_PASSWORD);
+    textfield_->set_default_width_in_chars(35);
+    container->AddChildView(textfield_);
+
+    connect_ = new views::BlueButton(this, base::ASCIIToUTF16("Connect"));

[oshima, 2014/07/28 17:49:28]

I just learned about this button :)

+    container->AddChildView(connect_);
+
+    cancel_ = new views::LabelButton(this, base::ASCIIToUTF16("Cancel"));
+    cancel_->SetHorizontalAlignment(gfx::ALIGN_CENTER);
+    container->AddChildView(cancel_);
+
+    AddChildView(container);
+  }
+
+  virtual ~PasswordView() {}
+
+ private:
+  void Close(bool successful) { callback_.Run(successful); }
+
+  void OnKnownError(const std::string& error_name,
+                    scoped_ptr<base::DictionaryValue> error_data) {
+    std::string message;
+    if (!error_data->GetString(chromeos::network_handler::kDbusErrorMessage,
+                               &message))
+      message = error_name;
+    if (message.empty())
+      message = std::string("Unknown error.");
+    if (!error_msg_) {
+      error_msg_ = new views::Label();
+      error_msg_->SetFontList(
+          error_msg_->font_list().Derive(0, gfx::Font::BOLD));
+      error_msg_->SetEnabledColor(SK_ColorRED);
+    }
+    error_msg_->SetText(base::UTF8ToUTF16(message));
+    if (!error_msg_->parent()) {
+      AddChildView(error_msg_);
+      // It is unfortunately necessary to have all the views upto the container
+      // do a layout because of the change in height of the view because of the
+      // error message.
+      for (views::View* v = this; v != parent_container_; v = v->parent())
+        v->Layout();

[oshima, 2014/07/28 17:49:29]

Can't you just call InvalidateLayout and layout on the top view?

[sadrul, 2014/07/29 04:13:27]

You are totally right. I forgot about this one. Fixed. Thanks!

+      parent_container_->Layout();
+    }
+    connect_->SetEnabled(true);
+  }
+
+  void OnSetProfileSucceed(const base::string16& password) {
+    base::DictionaryValue properties;
+    properties.SetStringWithoutPathExpansion(shill::kPassphraseProperty,
+                                             textfield_->text());
+    NetworkHandler::Get()->network_configuration_handler()->SetProperties(
+        network_.service_path,
+        properties,
+        base::Bind(&PasswordView::OnSetPropertiesSucceed,
+                   weak_ptr_.GetWeakPtr()),
+        base::Bind(&PasswordView::OnKnownError, weak_ptr_.GetWeakPtr()));
+  }
+
+  void OnSetPropertiesSucceed() {
+    const bool check_error_state = false;
+    NetworkHandler::Get()->network_connection_handler()->ConnectToNetwork(
+        network_.service_path,
+        base::Bind(&PasswordView::OnConnectionSucceed, weak_ptr_.GetWeakPtr()),
+        base::Bind(&PasswordView::OnKnownError, weak_ptr_.GetWeakPtr()),
+        check_error_state);
+  }
+
+  void OnConnectionSucceed() { Close(true); }
+
+  // views::ButtonListener:
+  virtual void ButtonPressed(views::Button* sender,
+                             const ui::Event& event) OVERRIDE {
+    if (sender == connect_) {
+      if (error_msg_) {
+        RemoveChildView(error_msg_);
+        delete error_msg_;
+        error_msg_ = NULL;
+      }
+      connect_->SetEnabled(false);
+      NetworkHandler::Get()->network_configuration_handler()->SetNetworkProfile(
+          network_.service_path,
+          NetworkProfileHandler::GetSharedProfilePath(),
+          base::Bind(&PasswordView::OnSetProfileSucceed,
+                     weak_ptr_.GetWeakPtr(),
+                     textfield_->text()),
+          base::Bind(&PasswordView::OnKnownError, weak_ptr_.GetWeakPtr()));
+    } else if (sender == cancel_) {
+      views::View* parent_view = parent();
+      Close(false);
+      parent_view->Layout();
+    } else {
+      NOTREACHED();
+    }
+  }
+
+  ui::NetworkInfo network_;
+  base::Callback<void(bool)> callback_;
+  views::View* parent_container_;
+
+  views::BlueButton* connect_;
+  views::LabelButton* cancel_;
+  views::Textfield* textfield_;
+  views::Label* error_msg_;
+  base::WeakPtrFactory<PasswordView> weak_ptr_;
+
+  DISALLOW_COPY_AND_ASSIGN(PasswordView);
+};
+
+// A View that represents a single row in the network list. This row also
+// contains the View for taking password for password-protected networks.
+class NetworkRow : public views::View {
+ public:
+  NetworkRow(const ui::NetworkInfo& network, views::View* container)
+      : network_(network), container_(container), weak_ptr_(this) {
+    SetBorder(views::Border::CreateEmptyBorder(10, 5, 10, 5));
+    SetLayoutManager(
+        new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0, 10));
+    Update(network);
+  }
+
+  virtual ~NetworkRow() {}
+
+  void Update(const ui::NetworkInfo& network) {
+    network_ = network;
+    views::ImageView* icon = new views::ImageView();
+    icon->SetImage(network.image);
+    icon->SetBounds(0, 0, network.image.width(), network.image.height());
+
+    views::Label* label = new views::Label(network.label);
+    if (network.highlight)
+      label->SetFontList(label->font_list().Derive(0, gfx::Font::BOLD));
+    AddChildView(icon);
+    AddChildView(label);
+    if (password_view_)
+      AddChildView(password_view_.get());
+  }
+
+ private:
+  void OnPasswordComplete(bool successful) {
+    password_view_.reset();
+    Layout();
+    parent()->Layout();
+    container_->Layout();
+  }
+
+  void ShowPasswordView(const std::string& service_path) {
+    const NetworkState* network =
+        NetworkHandler::Get()->network_state_handler()->GetNetworkState(
+            service_path);
+    if (!network)
+      return;
+
+    // If this is not a wifi network that needs a password, then ignore.
+    if (network->type() != shill::kTypeWifi ||
+        network->security() == shill::kSecurityNone) {
+      return;
+    }
+
+    password_view_.reset(new PasswordView(
+        network_,
+        base::Bind(&NetworkRow::OnPasswordComplete, weak_ptr_.GetWeakPtr()),
+        container_));
+    password_view_->set_owned_by_client();
+    AddChildView(password_view_.get());
+    PreferredSizeChanged();
+    Layout();
+    parent()->Layout();
+    container_->Layout();

[oshima, 2014/07/28 17:49:28]

same here.

[sadrul, 2014/07/29 04:13:27]

Done.

+  }
+
+  void OnNetworkConnectionError(const std::string& service_path,
+                                const std::string& error_name,
+                                scoped_ptr<base::DictionaryValue> error_data) {
+    if (error_name == NetworkConnectionHandler::kErrorConnectCanceled)
+      return;
+    if (error_name == shill::kErrorBadPassphrase ||
+        error_name == NetworkConnectionHandler::kErrorPassphraseRequired ||
+        error_name == NetworkConnectionHandler::kErrorConfigurationRequired ||
+        error_name == NetworkConnectionHandler::kErrorAuthenticationRequired) {
+      ShowPasswordView(service_path);
+    }
+  }
+
+  void Activate() {

[oshima, 2014/07/28 17:49:29]

would you mind renaming this to ActivateNetwork ?

[sadrul, 2014/07/29 04:13:27]

Done.

+    const chromeos::NetworkState* network =
+        NetworkHandler::Get()->network_state_handler()->GetNetworkState(
+            network_.service_path);
+    if (!network)
+      return;
+    if (network->IsConnectedState()) {
+      NetworkHandler::Get()->network_connection_handler()->DisconnectNetwork(
+          network_.service_path,
+          base::Closure(),
+          chromeos::network_handler::ErrorCallback());
+    } else if (!network->IsConnectingState()) {
+      // |network| is not connected, and not already trying to connect.
+      NetworkHandler::Get()->network_connection_handler()->ConnectToNetwork(
+          network_.service_path,
+          base::Closure(),
+          base::Bind(&NetworkRow::OnNetworkConnectionError,
+                     weak_ptr_.GetWeakPtr(),
+                     network_.service_path),
+          false);
+    }
+  }
+
+  // views::View:
+  virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
+    if (event->type() != ui::ET_MOUSE_PRESSED)
+      return;
+    Activate();
+    event->SetHandled();
+  }
+
+  virtual void OnGestureEvent(ui::GestureEvent* gesture) OVERRIDE {
+    if (gesture->type() != ui::ET_GESTURE_TAP)
+      return;
+    Activate();
+    gesture->SetHandled();
+  }
+
+  ui::NetworkInfo network_;
+  views::View* container_;
+  base::WeakPtrFactory<NetworkRow> weak_ptr_;
+  scoped_ptr<views::View> password_view_;
+
+  DISALLOW_COPY_AND_ASSIGN(NetworkRow);
+};
+
+class NetworkSelector : public ui::NetworkListDelegate,
+                        public chromeos::NetworkStateHandlerObserver,
+                        public ui::EventHandler {
+ public:
+  explicit NetworkSelector(aura::Window* container)
+      : background_view_(NULL),
+        scroll_content_(NULL),
+        scroller_(NULL),
+        network_list_(this) {
+    CreateWidget(container);
+    CreateNetworkList();
+
+    NetworkHandler::Get()->network_state_handler()->RequestScan();
+    NetworkHandler::Get()->network_state_handler()->AddObserver(this,
+                                                                FROM_HERE);
+  }
+
+  virtual ~NetworkSelector() {
+    NetworkHandler::Get()->network_state_handler()->RemoveObserver(this,
+                                                                   FROM_HERE);
+  }
+
+ private:
+  void CreateWidget(aura::Window* container) {
+    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_DEFAULT;
+    params.accept_events = true;
+    params.bounds = gfx::Rect(container->bounds().size());
+    params.parent = container;
+    params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+    widget_.reset(new views::Widget());
+    widget_->Init(params);
+    widget_->Show();
+
+    background_view_ = new views::View;
+    background_view_->set_background(
+        views::Background::CreateSolidBackground(kBackgroundColor));
+    background_view_->SetBorder(
+        views::Border::CreateEmptyBorder(100, 300, 100, 300));
+    background_view_->SetLayoutManager(new views::FillLayout());
+    background_view_->set_target_handler(this);
+
+    widget_->SetContentsView(background_view_);
+  }
+
+  void CreateNetworkList() {
+    const int kListHeight = 500;
+    scroller_ = new views::ScrollView();
+    scroller_->set_background(
+        views::Background::CreateSolidBackground(SK_ColorWHITE));
+    scroller_->SetBounds(0, 0, 400, kListHeight);
+
+    scroll_content_ = new views::View;
+    scroll_content_->SetLayoutManager(
+        new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0));
+    scroller_->SetContents(scroll_content_);
+
+    scroller_->ClipHeightTo(kListHeight, kListHeight);
+    background_view_->AddChildView(scroller_);
+
+    background_view_->Layout();
+    scroller_->Layout();
+    scroll_content_->Layout();
+
+    network_list_.set_content_view(scroll_content_);
+  }
+
+  void UpdateNetworkList() { network_list_.UpdateNetworkList(); }
+
+  void Close() { delete this; }
+
+  // ui::NetworkListDelegate:
+  virtual views::View* CreateViewForNetwork(
+      const ui::NetworkInfo& info) OVERRIDE {
+    return new NetworkRow(info, background_view_);
+  }
+
+  virtual bool IsViewHovered(views::View* view) OVERRIDE { return false; }
+
+  virtual chromeos::NetworkTypePattern GetNetworkTypePattern() const OVERRIDE {
+    return chromeos::NetworkTypePattern::NonVirtual();
+  }
+
+  virtual void UpdateViewForNetwork(views::View* view,
+                                    const ui::NetworkInfo& info) OVERRIDE {
+    static_cast<NetworkRow*>(view)->Update(info);
+  }
+
+  virtual views::Label* CreateInfoLabel() OVERRIDE {
+    views::Label* label = new views::Label();
+    return label;
+  }
+
+  virtual void RelayoutScrollList() OVERRIDE { scroller_->Layout(); }
+
+  // chromeos::NetworkStateHandlerObserver:
+  virtual void NetworkListChanged() OVERRIDE { UpdateNetworkList(); }
+
+  virtual void DeviceListChanged() OVERRIDE {}
+
+  virtual void DefaultNetworkChanged(
+      const chromeos::NetworkState* network) OVERRIDE {}
+
+  virtual void NetworkConnectionStateChanged(
+      const chromeos::NetworkState* network) OVERRIDE {}
+
+  virtual void NetworkPropertiesUpdated(
+      const chromeos::NetworkState* network) OVERRIDE {}
+
+  // ui::EventHandler:
+  virtual void OnMouseEvent(ui::MouseEvent* mouse) OVERRIDE {
+    CHECK_EQ(background_view_, mouse->target());
+    if (mouse->type() == ui::ET_MOUSE_PRESSED && !mouse->handled()) {
+      Close();
+      mouse->SetHandled();
+    }
+  }
+
+  virtual void OnGestureEvent(ui::GestureEvent* gesture) OVERRIDE {
+    CHECK_EQ(background_view_, gesture->target());
+    if (gesture->type() == ui::ET_GESTURE_TAP && !gesture->handled()) {
+      Close();
+      gesture->SetHandled();
+    }
+  }
+
+  scoped_ptr<views::Widget> widget_;
+  views::View* background_view_;
+  views::View* scroll_content_;
+  views::ScrollView* scroller_;
+
+  views::View* connect_;
+
+  ui::NetworkListView network_list_;
+
+  DISALLOW_COPY_AND_ASSIGN(NetworkSelector);
+};
+
+}  // namespace
+
+namespace debug {
+
+void CreateNetworkSelector(aura::Window* container) {
+  new NetworkSelector(container);
+}
+
+}  // namespace debug