src/chrome/browser/chromeos/ui/kiosk_external_update_notification.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chromeos/ui/kiosk_external_update_notification.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/shell_window_ids.h"
   9 #include "ui/aura/window.h"
  10 #include "ui/base/resource/resource_bundle.h"
  11 #include "ui/compositor/layer.h"
  12 #include "ui/compositor/scoped_layer_animation_settings.h"
  13 #include "ui/gfx/canvas.h"
  14 #include "ui/views/controls/label.h"
  15 #include "ui/views/layout/fill_layout.h"
  16 #include "ui/views/view.h"
  17 #include "ui/views/widget/widget.h"
  18 #include "ui/views/widget/widget_delegate.h"
  19
  20 namespace chromeos {
  21
  22 namespace {
  23
  24 const SkColor kTextColor = SK_ColorBLACK;
  25 const SkColor kWindowBackgroundColor = SK_ColorWHITE;
  26 const int kWindowCornerRadius = 4;
  27 const int kPreferredWidth = 600;
  28 const int kPreferredHeight = 250;
  29
  30 }  // namespace
  31
  32 class KioskExternalUpdateNotificationView : public views::WidgetDelegateView {
  33  public:
  34   explicit KioskExternalUpdateNotificationView(
  35       KioskExternalUpdateNotification* owner)
  36       : owner_(owner), widget_closed_(false) {
  37     AddLabel();
  38     SetLayoutManager(new views::FillLayout);
  39   }
  40
  41   virtual ~KioskExternalUpdateNotificationView() {
  42     widget_closed_ = true;
  43     InformOwnerForDismiss();
  44   }
  45
  46   // Closes the widget immediately from |owner_|.
  47   void CloseByOwner() {
  48     owner_ = NULL;
  49     if (!widget_closed_) {
  50       widget_closed_ = true;
  51       GetWidget()->Close();
  52     }
  53   }
  54
  55   void SetMessage(const base::string16& message) { label_->SetText(message); }
  56
  57   // views::WidgetDelegateView overrides:
  58   virtual void OnPaint(gfx::Canvas* canvas) override {
  59     SkPaint paint;
  60     paint.setStyle(SkPaint::kFill_Style);
  61     paint.setColor(kWindowBackgroundColor);
  62     canvas->DrawRoundRect(GetLocalBounds(), kWindowCornerRadius, paint);
  63     views::WidgetDelegateView::OnPaint(canvas);
  64   }
  65
  66   virtual gfx::Size GetPreferredSize() const override {
  67     return gfx::Size(kPreferredWidth, kPreferredHeight);
  68   }
  69
  70  private:
  71   void AddLabel() {
  72     label_ = new views::Label;
  73     label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  74     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  75     label_->SetFontList(rb.GetFontList(ui::ResourceBundle::BoldFont));
  76     label_->SetEnabledColor(kTextColor);
  77     label_->SetDisabledColor(kTextColor);
  78     label_->SetAutoColorReadabilityEnabled(false);
  79     label_->SetMultiLine(true);
  80     AddChildView(label_);
  81   }
  82
  83   void InformOwnerForDismiss() {
  84     // Inform the |owner_| that we are going away.
  85     if (owner_) {
  86       KioskExternalUpdateNotification* owner = owner_;
  87       owner_ = NULL;
  88       owner->Dismiss();
  89     }
  90   }
  91
  92   // The owner of this message which needs to get notified when the message
  93   // closes.
  94   KioskExternalUpdateNotification* owner_;
  95   views::Label* label_;  // owned by views hierarchy.
  96
  97   // True if the widget got already closed.
  98   bool widget_closed_;
  99
 100   DISALLOW_COPY_AND_ASSIGN(KioskExternalUpdateNotificationView);
 101 };
 102
 103 KioskExternalUpdateNotification::KioskExternalUpdateNotification(
 104     const base::string16& message) {
 105   CreateAndShowNotificationView(message);
 106 }
 107
 108 KioskExternalUpdateNotification::~KioskExternalUpdateNotification() {
 109   Dismiss();
 110 }
 111
 112 void KioskExternalUpdateNotification::ShowMessage(
 113     const base::string16& message) {
 114   if (view_)
 115     view_->SetMessage(message);
 116 }
 117
 118 void KioskExternalUpdateNotification::CreateAndShowNotificationView(
 119     const base::string16& message) {
 120   view_ = new KioskExternalUpdateNotificationView(this);
 121   view_->SetMessage(message);
 122
 123   aura::Window* root_window = ash::Shell::GetTargetRootWindow();
 124   gfx::Size rs = root_window->bounds().size();
 125   gfx::Size ps = view_->GetPreferredSize();
 126   gfx::Rect bounds((rs.width() - ps.width()) / 2,
 127                    (rs.height() - ps.height()) / 10,
 128                    ps.width(),
 129                    ps.height());
 130   views::Widget::InitParams params;
 131   params.type = views::Widget::InitParams::TYPE_POPUP;
 132   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
 133   params.ownership = views::Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET;
 134   params.accept_events = false;
 135   params.keep_on_top = true;
 136   params.remove_standard_frame = true;
 137   params.delegate = view_;
 138   params.bounds = bounds;
 139   params.parent = ash::Shell::GetContainer(
 140       root_window, ash::kShellWindowId_SettingBubbleContainer);
 141   views::Widget* widget = new views::Widget;
 142   widget->Init(params);
 143   widget->SetContentsView(view_);
 144   gfx::NativeView native_view = widget->GetNativeView();
 145   native_view->SetName("KioskExternalUpdateNotification");
 146   widget->Show();
 147 }
 148
 149 void KioskExternalUpdateNotification::Dismiss() {
 150   if (view_) {
 151     KioskExternalUpdateNotificationView* view = view_;
 152     view_ = NULL;
 153     view->CloseByOwner();
 154   }
 155 }
 156
 157 }  // namespace chromeos