ui/app_list/views/search_box_view.cc

   1 // Copyright (c) 2012 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 "ui/app_list/views/search_box_view.h"
   6
   7 #include <algorithm>
   8
   9 #include "grit/ui_resources.h"
  10 #include "ui/app_list/app_list_model.h"
  11 #include "ui/app_list/app_list_view_delegate.h"
  12 #include "ui/app_list/search_box_model.h"
  13 #include "ui/app_list/speech_ui_model.h"
  14 #include "ui/app_list/views/app_list_menu_views.h"
  15 #include "ui/app_list/views/contents_view.h"
  16 #include "ui/app_list/views/search_box_view_delegate.h"
  17 #include "ui/base/l10n/l10n_util.h"
  18 #include "ui/base/resource/resource_bundle.h"
  19 #include "ui/events/event.h"
  20 #include "ui/views/controls/button/image_button.h"
  21 #include "ui/views/controls/button/menu_button.h"
  22 #include "ui/views/controls/image_view.h"
  23 #include "ui/views/controls/textfield/textfield.h"
  24
  25 namespace app_list {
  26
  27 namespace {
  28
  29 const int kPadding = 14;
  30 const int kIconDimension = 32;
  31 const int kPreferredWidth = 360;
  32 const int kPreferredHeight = 48;
  33 #if !defined(OS_CHROMEOS)
  34 const int kMenuButtonDimension = 29;
  35 #endif
  36
  37 const SkColor kHintTextColor = SkColorSetRGB(0xA0, 0xA0, 0xA0);
  38
  39 // Menu offset relative to the bottom-right corner of the menu button.
  40 const int kMenuYOffsetFromButton = -4;
  41 const int kMenuXOffsetFromButton = -7;
  42
  43 }  // namespace
  44
  45 SearchBoxView::SearchBoxView(SearchBoxViewDelegate* delegate,
  46                              AppListViewDelegate* view_delegate)
  47     : delegate_(delegate),
  48       view_delegate_(view_delegate),
  49       model_(NULL),
  50       icon_view_(new views::ImageView),
  51       speech_button_(NULL),
  52       search_box_(new views::Textfield),
  53       contents_view_(NULL) {
  54   AddChildView(icon_view_);
  55
  56   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  57
  58 #if !defined(OS_CHROMEOS)
  59   menu_button_ = new views::MenuButton(NULL, base::string16(), this, false);
  60   menu_button_->SetBorder(views::Border::NullBorder());
  61   menu_button_->SetIcon(*rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_NORMAL));
  62   menu_button_->SetHoverIcon(*rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_HOVER));
  63   menu_button_->SetPushedIcon(*rb.GetImageSkiaNamed(
  64       IDR_APP_LIST_TOOLS_PRESSED));
  65   AddChildView(menu_button_);
  66 #endif
  67
  68   search_box_->SetBorder(views::Border::NullBorder());
  69   search_box_->SetFontList(rb.GetFontList(ui::ResourceBundle::MediumFont));
  70   search_box_->set_placeholder_text_color(kHintTextColor);
  71   search_box_->set_controller(this);
  72   AddChildView(search_box_);
  73
  74   view_delegate_->GetSpeechUI()->AddObserver(this);
  75   ModelChanged();
  76 }
  77
  78 SearchBoxView::~SearchBoxView() {
  79   view_delegate_->GetSpeechUI()->RemoveObserver(this);
  80   model_->search_box()->RemoveObserver(this);
  81 }
  82
  83 void SearchBoxView::ModelChanged() {
  84   if (model_)
  85     model_->search_box()->RemoveObserver(this);
  86
  87   model_ = view_delegate_->GetModel();
  88   DCHECK(model_);
  89   model_->search_box()->AddObserver(this);
  90   IconChanged();
  91   SpeechRecognitionButtonPropChanged();
  92   HintTextChanged();
  93 }
  94
  95 bool SearchBoxView::HasSearch() const {
  96   return !search_box_->text().empty();
  97 }
  98
  99 void SearchBoxView::ClearSearch() {
 100   search_box_->SetText(base::string16());
 101   // Updates model and fires query changed manually because SetText() above
 102   // does not generate ContentsChanged() notification.
 103   UpdateModel();
 104   NotifyQueryChanged();
 105 }
 106
 107 void SearchBoxView::InvalidateMenu() {
 108   menu_.reset();
 109 }
 110
 111 gfx::Size SearchBoxView::GetPreferredSize() {
 112   return gfx::Size(kPreferredWidth, kPreferredHeight);
 113 }
 114
 115 void SearchBoxView::Layout() {
 116   gfx::Rect rect(GetContentsBounds());
 117   if (rect.IsEmpty())
 118     return;
 119
 120   gfx::Rect icon_frame(rect);
 121   icon_frame.set_width(kIconDimension + 2 * kPadding);
 122   icon_view_->SetBoundsRect(icon_frame);
 123
 124   // Places |speech_button_| if exists. |speech_button_frame| holds its bounds
 125   // to calculate the search box bounds.
 126   gfx::Rect speech_button_frame;
 127   if (speech_button_) {
 128     speech_button_frame = icon_frame;
 129     speech_button_frame.set_x(rect.right() - icon_frame.width());
 130     gfx::Size button_size = speech_button_->GetPreferredSize();
 131     gfx::Point button_origin = speech_button_frame.CenterPoint();
 132     button_origin.Offset(-button_size.width() / 2, -button_size.height() / 2);
 133     speech_button_->SetBoundsRect(gfx::Rect(button_origin, button_size));
 134   }
 135
 136   gfx::Rect menu_button_frame(rect);
 137 #if !defined(OS_CHROMEOS)
 138   menu_button_frame.set_width(kMenuButtonDimension);
 139   menu_button_frame.set_x(rect.right() - menu_button_frame.width() - kPadding);
 140   menu_button_frame.ClampToCenteredSize(gfx::Size(menu_button_frame.width(),
 141                                                   kMenuButtonDimension));
 142   menu_button_->SetBoundsRect(menu_button_frame);
 143 #else
 144   menu_button_frame.set_width(0);
 145 #endif
 146
 147   gfx::Rect edit_frame(rect);
 148   edit_frame.set_x(icon_frame.right());
 149   int edit_frame_width =
 150       rect.width() - icon_frame.width() - kPadding - menu_button_frame.width();
 151   if (!speech_button_frame.IsEmpty())
 152     edit_frame_width -= speech_button_frame.width() + kPadding;
 153   edit_frame.set_width(edit_frame_width);
 154   edit_frame.ClampToCenteredSize(
 155       gfx::Size(edit_frame.width(), search_box_->GetPreferredSize().height()));
 156   search_box_->SetBoundsRect(edit_frame);
 157 }
 158
 159 bool SearchBoxView::OnMouseWheel(const ui::MouseWheelEvent& event) {
 160   if (contents_view_)
 161     return contents_view_->OnMouseWheel(event);
 162
 163   return false;
 164 }
 165
 166 void SearchBoxView::UpdateModel() {
 167   // Temporarily remove from observer to ignore notifications caused by us.
 168   model_->search_box()->RemoveObserver(this);
 169   model_->search_box()->SetText(search_box_->text());
 170   model_->search_box()->SetSelectionModel(search_box_->GetSelectionModel());
 171   model_->search_box()->AddObserver(this);
 172 }
 173
 174 void SearchBoxView::NotifyQueryChanged() {
 175   DCHECK(delegate_);
 176   delegate_->QueryChanged(this);
 177 }
 178
 179 void SearchBoxView::ContentsChanged(views::Textfield* sender,
 180                                     const base::string16& new_contents) {
 181   UpdateModel();
 182   contents_view_->CancelAutoLaunch();
 183   NotifyQueryChanged();
 184 }
 185
 186 bool SearchBoxView::HandleKeyEvent(views::Textfield* sender,
 187                                    const ui::KeyEvent& key_event) {
 188   bool handled = false;
 189   if (contents_view_ && contents_view_->visible())
 190     handled = contents_view_->OnKeyPressed(key_event);
 191
 192   return handled;
 193 }
 194
 195 void SearchBoxView::ButtonPressed(views::Button* sender,
 196                                   const ui::Event& event) {
 197   DCHECK(speech_button_ && sender == speech_button_);
 198   view_delegate_->ToggleSpeechRecognition();
 199 }
 200
 201 void SearchBoxView::OnMenuButtonClicked(View* source, const gfx::Point& point) {
 202   if (!menu_)
 203     menu_.reset(new AppListMenuViews(view_delegate_));
 204
 205   const gfx::Point menu_location =
 206       menu_button_->GetBoundsInScreen().bottom_right() +
 207       gfx::Vector2d(kMenuXOffsetFromButton, kMenuYOffsetFromButton);
 208   menu_->RunMenuAt(menu_button_, menu_location);
 209 }
 210
 211 void SearchBoxView::IconChanged() {
 212   icon_view_->SetImage(model_->search_box()->icon());
 213 }
 214
 215 void SearchBoxView::SpeechRecognitionButtonPropChanged() {
 216   const SearchBoxModel::SpeechButtonProperty* speech_button_prop =
 217       model_->search_box()->speech_button();
 218   if (speech_button_prop) {
 219     if (!speech_button_) {
 220       speech_button_ = new views::ImageButton(this);
 221       AddChildView(speech_button_);
 222     }
 223
 224     if (view_delegate_->GetSpeechUI()->state() ==
 225         SPEECH_RECOGNITION_HOTWORD_LISTENING) {
 226       speech_button_->SetImage(
 227           views::Button::STATE_NORMAL, &speech_button_prop->on_icon);
 228       speech_button_->SetTooltipText(speech_button_prop->on_tooltip);
 229     } else {
 230       speech_button_->SetImage(
 231           views::Button::STATE_NORMAL, &speech_button_prop->off_icon);
 232       speech_button_->SetTooltipText(speech_button_prop->off_tooltip);
 233     }
 234   } else {
 235     if (speech_button_) {
 236       // Deleting a view will detach it from its parent.
 237       delete speech_button_;
 238       speech_button_ = NULL;
 239     }
 240   }
 241 }
 242
 243 void SearchBoxView::HintTextChanged() {
 244   search_box_->set_placeholder_text(model_->search_box()->hint_text());
 245 }
 246
 247 void SearchBoxView::SelectionModelChanged() {
 248   search_box_->SelectSelectionModel(model_->search_box()->selection_model());
 249 }
 250
 251 void SearchBoxView::TextChanged() {
 252   search_box_->SetText(model_->search_box()->text());
 253   NotifyQueryChanged();
 254 }
 255
 256 void SearchBoxView::OnSpeechRecognitionStateChanged(
 257     SpeechRecognitionState new_state) {
 258   SpeechRecognitionButtonPropChanged();
 259   SchedulePaint();
 260 }
 261
 262 }  // namespace app_list