Handle gesture events in notifications.

ash/system/tray/tray_notification_view.cc

+// Copyright (c) 2012 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 "ash/system/tray/tray_notification_view.h"
+
+#include "ash/system/tray/system_tray_item.h"
+#include "ash/system/tray/tray_constants.h"
+#include "grit/ash_strings.h"
+#include "grit/ui_resources_standard.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/image/image_skia.h"
+#include "ui/views/controls/button/image_button.h"
+#include "ui/views/controls/image_view.h"
+#include "ui/views/layout/grid_layout.h"
+
+namespace ash {
+namespace internal {
+
+TrayNotificationView::TrayNotificationView(SystemTrayItem* tray, int icon_id)
+    : tray_(tray),
+      icon_id_(icon_id),
+      icon_(NULL) {
+}
+
+TrayNotificationView::~TrayNotificationView() {
+}
+
+void TrayNotificationView::InitView(views::View* contents) {
+  set_background(views::Background::CreateSolidBackground(kBackgroundColor));
+
+  views::GridLayout* layout = new views::GridLayout(this);
+  SetLayoutManager(layout);
+
+  views::ImageButton* close_button = new views::ImageButton(this);
+  close_button->SetImage(views::CustomButton::BS_NORMAL,
+                         ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
+                             IDR_AURA_WINDOW_CLOSE));
+
+  icon_ = new views::ImageView;
+  if (icon_id_ != 0) {
+    icon_->SetImage(
+        ResourceBundle::GetSharedInstance().GetImageSkiaNamed(icon_id_));
+  }
+
+  views::ColumnSet* columns = layout->AddColumnSet(0);
+
+  columns->AddPaddingColumn(0, kTrayPopupPaddingHorizontal/2);
+
+  // Icon
+  columns->AddColumn(views::GridLayout::CENTER, views::GridLayout::CENTER,
+                     0, /* resize percent */
+                     views::GridLayout::FIXED,
+                     kNotificationIconWidth, kNotificationIconWidth);
+
+  columns->AddPaddingColumn(0, kTrayPopupPaddingHorizontal/2);
+
+  // Contents
+  columns->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL,
+                     0, /* resize percent */
+                     views::GridLayout::FIXED,
+                     kTrayNotificationContentsWidth,
+                     kTrayNotificationContentsWidth);
+
+  columns->AddPaddingColumn(0, kTrayPopupPaddingHorizontal/2);
+
+  // Close button
+  columns->AddColumn(views::GridLayout::CENTER, views::GridLayout::CENTER,
+                     0, /* resize percent */
+                     views::GridLayout::FIXED,
+                     kNotificationIconWidth, kNotificationIconWidth);
+
+  columns->AddPaddingColumn(0, kTrayPopupPaddingHorizontal/2);
+
+  // Layout rows
+  layout->AddPaddingRow(0, kTrayPopupPaddingBetweenItems);
+  layout->StartRow(0, 0);
+  layout->AddView(icon_);
+  layout->AddView(contents);
+  layout->AddView(close_button);
+  layout->AddPaddingRow(0, kTrayPopupPaddingBetweenItems);
+}
+
+void TrayNotificationView::SetIconImage(const gfx::ImageSkia& image) {
+  icon_->SetImage(image);
+  SchedulePaint();
+}
+
+void TrayNotificationView::UpdateView(views::View* new_contents) {
+  RemoveAllChildViews(true);
+  InitView(new_contents);
+  Layout();
+  PreferredSizeChanged();
+  SchedulePaint();
+}
+
+void TrayNotificationView::UpdateViewAndImage(views::View* new_contents,
+                                              const gfx::ImageSkia& image) {
+  RemoveAllChildViews(true);
+  InitView(new_contents);
+  icon_->SetImage(image);
+  Layout();
+  PreferredSizeChanged();
+  SchedulePaint();
+}
+
+void TrayNotificationView::ButtonPressed(views::Button* sender,
+                                         const views::Event& event) {
+  HandleClose();
+}
+
+bool TrayNotificationView::OnMousePressed(const views::MouseEvent& event) {
+  HandleClickAction();
+  return true;
+}
+
+ui::GestureStatus TrayNotificationView::OnGestureEvent(
+    const views::GestureEvent& event) {
+  if (event.type() != ui::ET_GESTURE_TAP)
+    return ui::GESTURE_STATUS_UNKNOWN;
+  HandleClickAction();
+  return ui::GESTURE_STATUS_CONSUMED;
+}
+
+void TrayNotificationView::OnClose() {
+}
+
+void TrayNotificationView::OnClickAction() {
+}
+
+void TrayNotificationView::HandleClose() {
+  OnClose();
+  tray_->HideNotificationView();
+}
+
+void TrayNotificationView::HandleClickAction() {
+  HandleClose();
+  OnClickAction();
+}
+
+}  // namespace internal
+}  // namespace ash