Implement app list folder management page UI.

ui/app_list/views/folder_header_view.cc

+// Copyright (c) 2013 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 "ui/app_list/views/folder_header_view.h"
+
+#include "base/strings/utf_string_conversions.h"
+#include "grit/ui_resources.h"
+#include "grit/ui_strings.h"
+#include "ui/app_list/app_list_constants.h"
+#include "ui/app_list/app_list_folder_item.h"
+#include "ui/app_list/views/app_list_folder_view.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/canvas.h"
+#include "ui/views/controls/button/image_button.h"
+#include "ui/views/controls/textfield/textfield.h"
+
+namespace app_list {
+
+namespace {
+
+const int kPreferredWidth = 360;
+const int kPreferredHeight = 48;
+const int kIconDimension = 32;
+const int kPadding = 14;
+const int kFolderNameWidth = 150;
+const int kFolderNameHeight = 30;
+const int kBottomSeparatorWidth = 380;
+const int kBottomSeparatorHeight = 1;
+
+const SkColor kHintTextColor = SkColorSetRGB(0xA0, 0xA0, 0xA0);
+
+}  // namespace
+
+class FolderHeaderView::FolderNameView : public views::Textfield {
+ public:
+  FolderNameView() {
+    set_border(views::Border::CreateEmptyBorder(1, 1, 1, 1));
+  }
+
+  virtual ~FolderNameView() {
+  }
+
+  // Overridden from views::View:
+  virtual gfx::Size GetPreferredSize() OVERRIDE {
+    return gfx::Size(kFolderNameWidth, kFolderNameHeight);
+  }
+
+  virtual void OnPaintFocusBorder(gfx::Canvas* canvas) OVERRIDE {
+    const SkColor kFocusBorderColor = SkColorSetRGB(64, 128, 250);
+    if (HasFocus() && focusable()) {
+      gfx::Rect rect = GetLocalBounds();
+      rect.Inset(0, 0, 1, 1);
+      canvas->DrawRect(rect, kFocusBorderColor);
+    }
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FolderNameView);
+};
+
+FolderHeaderView::FolderHeaderView(FolderHeaderViewDelegate* delegate)
+    : folder_item_(NULL),
+      back_button_(new views::ImageButton(this)),
+      folder_name_view_(new FolderNameView),
+      delegate_(delegate) {
+  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
+  back_button_->SetImage(views::ImageButton::STATE_NORMAL,
+      rb.GetImageSkiaNamed(IDR_APP_LIST_FOLDER_BACK_NORMAL));
+  back_button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
+      views::ImageButton::ALIGN_MIDDLE);
+  AddChildView(back_button_);
+
+  folder_name_view_->SetFont(rb.GetFont(ui::ResourceBundle::MediumFont));
+  folder_name_view_->set_placeholder_text_color(kHintTextColor);
+  folder_name_view_->set_placeholder_text(
+      rb.GetLocalizedString(IDS_APP_LIST_FOLDER_NAME_PLACEHOLDER));
+  folder_name_view_->RemoveBorder();
+  folder_name_view_->SetBackgroundColor(kContentsBackgroundColor);
+  folder_name_view_->SetController(this);
+  AddChildView(folder_name_view_);
+}
+
+FolderHeaderView::~FolderHeaderView() {
+  if (folder_item_)
+    folder_item_->RemoveObserver(this);
+}
+
+void FolderHeaderView::SetFolderItem(AppListFolderItem* folder_item) {
+  if (folder_item_)
+    folder_item_->RemoveObserver(this);
+
+  folder_item_ = folder_item;
+  if (!folder_item_)
+    return;
+  folder_item_->AddObserver(this);
+
+  Update();
+}
+
+void FolderHeaderView::Update() {
+  if (!folder_item_)
+    return;
+
+  folder_name_view_->SetText(UTF8ToUTF16(folder_item_->title()));
+}
+
+gfx::Size FolderHeaderView::GetPreferredSize() {
+  return gfx::Size(kPreferredWidth, kPreferredHeight);
+}
+
+void FolderHeaderView::Layout() {
+  gfx::Rect rect(GetContentsBounds());
+  if (rect.IsEmpty())
+    return;
+
+  gfx::Rect back_bounds(rect);
+  back_bounds.set_width(kIconDimension + 2 * kPadding);
+  back_button_->SetBoundsRect(back_bounds);
+
+  gfx::Rect text_bounds(rect);
+  int text_width = folder_name_view_->GetPreferredSize().width();
+  text_bounds.set_x(back_bounds.x() + (rect.width() - text_width) / 2);
+  text_bounds.set_width(text_width);
+  text_bounds.ClampToCenteredSize(gfx::Size(text_bounds.width(),
+      folder_name_view_->GetPreferredSize().height()));
+  folder_name_view_->SetBoundsRect(text_bounds);
+}
+
+void FolderHeaderView::OnPaint(gfx::Canvas* canvas) {
+  views::View::OnPaint(canvas);
+
+  gfx::Rect rect(GetContentsBounds());
+  if (rect.IsEmpty())
+    return;
+
+  // Draw bottom separator line.
+  rect.set_x((rect.width() - kBottomSeparatorWidth) / 2 + rect.x());
+  rect.set_y(rect.y() + rect.height() - kBottomSeparatorHeight);
+  rect.set_width(kBottomSeparatorWidth);
+  rect.set_height(kBottomSeparatorHeight);
+  canvas->FillRect(rect, kTopSeparatorColor);
+}
+
+void FolderHeaderView::ContentsChanged(views::Textfield* sender,
+                                       const base::string16& new_contents) {
+  // Temporarily remove from observer to ignore data change caused by us.
+  if (!folder_item_)
+    return;
+
+  folder_item_->RemoveObserver(this);
+  std::string name = UTF16ToUTF8(folder_name_view_->text());
+  folder_item_->SetTitleAndFullName(name, name);
+  folder_item_->AddObserver(this);
+}
+
+void FolderHeaderView::ButtonPressed(views::Button* sender,
+                                     const ui::Event& event) {
+  delegate_->NavigateBack(folder_item_, event);
+}
+
+void FolderHeaderView::ItemIconChanged() {
+}
+
+void FolderHeaderView::ItemTitleChanged() {
+  Update();
+}
+
+void FolderHeaderView::ItemHighlightedChanged() {
+}
+
+void FolderHeaderView::ItemIsInstallingChanged() {
+}
+
+void FolderHeaderView::ItemPercentDownloadedChanged() {
+}
+
+}  // namespace app_list
+