Update cached kiosk app crx from usb stick.

chrome/browser/chromeos/ui/kiosk_external_update_notification.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 "chrome/browser/chromeos/ui/kiosk_external_update_notification.h"
+
+#include "ash/shell.h"
+#include "ash/shell_window_ids.h"
+#include "ui/aura/window.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/compositor/layer.h"
+#include "ui/compositor/scoped_layer_animation_settings.h"
+#include "ui/gfx/canvas.h"
+#include "ui/views/controls/label.h"
+#include "ui/views/layout/fill_layout.h"
+#include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+#include "ui/views/widget/widget_delegate.h"
+
+namespace chromeos {
+
+namespace {
+
+const SkColor kTextColor = SK_ColorBLACK;
+const SkColor kWindowBackgroundColor = SK_ColorWHITE;
+const int kWindowCornerRadius = 4;
+const int kPreferredWidth = 600;
+const int kPreferredHeight = 250;
+
+}  // namespace
+
+class KioskExternalUpdateNotificationView : public views::WidgetDelegateView {
+ public:
+  explicit KioskExternalUpdateNotificationView(
+      KioskExternalUpdateNotification* owner)
+      : owner_(owner), widget_closed_(false) {
+    AddLabel();
+    SetLayoutManager(new views::FillLayout);
+  }
+
+  virtual ~KioskExternalUpdateNotificationView() {
+    widget_closed_ = true;
+    InformOwnerForDismiss();
+  }
+
+  // Closes the widget immediately from |owner_|.
+  void CloseByOwner() {
+    owner_ = NULL;
+    if (!widget_closed_) {
+      widget_closed_ = true;
+      GetWidget()->Close();
+    }
+  }
+
+  void SetMessage(const base::string16& message) { label_->SetText(message); }
+
+  // views::WidgetDelegateView overrides:
+  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
+    SkPaint paint;
+    paint.setStyle(SkPaint::kFill_Style);
+    paint.setColor(kWindowBackgroundColor);
+    canvas->DrawRoundRect(GetLocalBounds(), kWindowCornerRadius, paint);
+    views::WidgetDelegateView::OnPaint(canvas);
+  }
+
+  virtual gfx::Size GetPreferredSize() const OVERRIDE {
+    return gfx::Size(kPreferredWidth, kPreferredHeight);
+  }
+
+ private:
+  void AddLabel() {
+    label_ = new views::Label;
+    label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
+    ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
+    label_->SetFontList(rb.GetFontList(ui::ResourceBundle::BoldFont));
+    label_->SetEnabledColor(kTextColor);
+    label_->SetDisabledColor(kTextColor);
+    label_->SetAutoColorReadabilityEnabled(false);
+    label_->SetMultiLine(true);
+    AddChildView(label_);
+  }
+
+  void InformOwnerForDismiss() {
+    // Inform the |owner_| that we are going away.
+    if (owner_) {
+      KioskExternalUpdateNotification* owner = owner_;
+      owner_ = NULL;
+      owner->Dismiss();
+    }
+  }
+
+  // The owner of this message which needs to get notified when the message
+  // closes.
+  KioskExternalUpdateNotification* owner_;
+  views::Label* label_;  // owned by views hierarchy.
+
+  // True if the widget got already closed.
+  bool widget_closed_;
+
+  DISALLOW_COPY_AND_ASSIGN(KioskExternalUpdateNotificationView);
+};
+
+KioskExternalUpdateNotification::KioskExternalUpdateNotification(
+    const base::string16& message) {
+  CreateAndShowNotificationView(message);
+}
+
+KioskExternalUpdateNotification::~KioskExternalUpdateNotification() {
+  Dismiss();
+}
+
+void KioskExternalUpdateNotification::ShowMessage(
+    const base::string16& message) {
+  if (view_)
+    view_->SetMessage(message);
+}
+
+void KioskExternalUpdateNotification::CreateAndShowNotificationView(
+    const base::string16& message) {
+  view_ = new KioskExternalUpdateNotificationView(this);
+  view_->SetMessage(message);
+
+  aura::Window* root_window = ash::Shell::GetTargetRootWindow();
+  gfx::Size rs = root_window->bounds().size();
+  gfx::Size ps = view_->GetPreferredSize();
+  gfx::Rect bounds((rs.width() - ps.width()) / 2,
+                   (rs.height() - ps.height()) / 10,
+                   ps.width(),
+                   ps.height());
+  views::Widget::InitParams params;
+  params.type = views::Widget::InitParams::TYPE_POPUP;
+  params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
+  params.ownership = views::Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET;
+  params.accept_events = false;
+  params.keep_on_top = true;
+  params.remove_standard_frame = true;
+  params.delegate = view_;
+  params.bounds = bounds;
+  params.parent = ash::Shell::GetContainer(
+      root_window, ash::kShellWindowId_SettingBubbleContainer);
+  views::Widget* widget = new views::Widget;
+  widget->Init(params);
+  widget->SetContentsView(view_);
+  gfx::NativeView native_view = widget->GetNativeView();
+  native_view->SetName("KioskExternalUpdateNotification");
+  widget->Show();
+}
+
+void KioskExternalUpdateNotification::Dismiss() {
+  if (view_) {
+    KioskExternalUpdateNotificationView* view = view_;
+    view_ = NULL;
+    view->CloseByOwner();
+  }
+}
+
+}  // namespace chromeos