src/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/search_box_view_delegate.h"
  16 #include "ui/base/resource/resource_bundle.h"
  17 #include "ui/events/event.h"
  18 #include "ui/views/border.h"
  19 #include "ui/views/controls/button/image_button.h"
  20 #include "ui/views/controls/button/menu_button.h"
  21 #include "ui/views/controls/image_view.h"
  22 #include "ui/views/controls/textfield/textfield.h"
  23
  24 namespace app_list {
  25
  26 namespace {
  27
  28 const int kPadding = 14;
  29 const int kIconDimension = 32;
  30 const int kPreferredWidth = 360;
  31 const int kPreferredHeight = 48;
  32 #if !defined(OS_CHROMEOS)
  33 const int kMenuButtonDimension = 29;
  34 #endif
  35
  36 const SkColor kHintTextColor = SkColorSetRGB(0xA0, 0xA0, 0xA0);
  37
  38 // Menu offset relative to the bottom-right corner of the menu button.
  39 const int kMenuYOffsetFromButton = -4;
  40 const int kMenuXOffsetFromButton = -7;
  41
  42 }  // namespace
  43
  44 SearchBoxView::SearchBoxView(SearchBoxViewDelegate* delegate,
  45                              AppListViewDelegate* view_delegate)
  46     : delegate_(delegate),
  47       view_delegate_(view_delegate),
  48       model_(NULL),
  49       icon_view_(new views::ImageView),
  50       speech_button_(NULL),
  51       search_box_(new views::Textfield),
  52       contents_view_(NULL) {
  53   AddChildView(icon_view_);
  54
  55   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  56
  57 #if !defined(OS_CHROMEOS)
  58   menu_button_ = new views::MenuButton(NULL, base::string16(), this, false);
  59   menu_button_->SetBorder(views::Border::NullBorder());
  60   menu_button_->SetImage(views::Button::STATE_NORMAL,
  61                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_NORMAL));
  62   menu_button_->SetImage(views::Button::STATE_HOVERED,
  63                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_HOVER));
  64   menu_button_->SetImage(views::Button::STATE_PRESSED,
  65                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_PRESSED));
  66   AddChildView(menu_button_);
  67 #endif
  68
  69   search_box_->SetBorder(views::Border::NullBorder());
  70   search_box_->SetFontList(rb.GetFontList(ui::ResourceBundle::MediumFont));
  71   search_box_->set_placeholder_text_color(kHintTextColor);
  72   search_box_->set_controller(this);
  73   AddChildView(search_box_);
  74
  75   view_delegate_->GetSpeechUI()->AddObserver(this);
  76   ModelChanged();
  77 }
  78
  79 SearchBoxView::~SearchBoxView() {
  80   view_delegate_->GetSpeechUI()->RemoveObserver(this);
  81   model_->search_box()->RemoveObserver(this);
  82 }
  83
  84 void SearchBoxView::ModelChanged() {
  85   if (model_)
  86     model_->search_box()->RemoveObserver(this);
  87
  88   model_ = view_delegate_->GetModel();
  89   DCHECK(model_);
  90   model_->search_box()->AddObserver(this);
  91   IconChanged();
  92   SpeechRecognitionButtonPropChanged();
  93   HintTextChanged();
  94 }
  95
  96 bool SearchBoxView::HasSearch() const {
  97   return !search_box_->text().empty();
  98 }
  99
 100 void SearchBoxView::ClearSearch() {
 101   search_box_->SetText(base::string16());
 102   view_delegate_->AutoLaunchCanceled();
 103   // Updates model and fires query changed manually because SetText() above
 104   // does not generate ContentsChanged() notification.
 105   UpdateModel();
 106   NotifyQueryChanged();
 107 }
 108
 109 void SearchBoxView::InvalidateMenu() {
 110   menu_.reset();
 111 }
 112
 113 gfx::Size SearchBoxView::GetPreferredSize() const {
 114   return gfx::Size(kPreferredWidth, kPreferredHeight);
 115 }
 116
 117 void SearchBoxView::Layout() {
 118   gfx::Rect rect(GetContentsBounds());
 119   if (rect.IsEmpty())
 120     return;
 121
 122   gfx::Rect icon_frame(rect);
 123   icon_frame.set_width(kIconDimension + 2 * kPadding);
 124   icon_view_->SetBoundsRect(icon_frame);
 125
 126   // Places |speech_button_| if exists. |speech_button_frame| holds its bounds
 127   // to calculate the search box bounds.
 128   gfx::Rect speech_button_frame;
 129   if (speech_button_) {
 130     speech_button_frame = icon_frame;
 131     speech_button_frame.set_x(rect.right() - icon_frame.width());
 132     gfx::Size button_size = speech_button_->GetPreferredSize();
 133     gfx::Point button_origin = speech_button_frame.CenterPoint();
 134     button_origin.Offset(-button_size.width() / 2, -button_size.height() / 2);
 135     speech_button_->SetBoundsRect(gfx::Rect(button_origin, button_size));
 136   }
 137
 138   gfx::Rect menu_button_frame(rect);
 139 #if !defined(OS_CHROMEOS)
 140   menu_button_frame.set_width(kMenuButtonDimension);
 141   menu_button_frame.set_x(rect.right() - menu_button_frame.width() - kPadding);
 142   menu_button_frame.ClampToCenteredSize(gfx::Size(menu_button_frame.width(),
 143                                                   kMenuButtonDimension));
 144   menu_button_->SetBoundsRect(menu_button_frame);
 145 #else
 146   menu_button_frame.set_width(0);
 147 #endif
 148
 149   gfx::Rect edit_frame(rect);
 150   edit_frame.set_x(icon_frame.right());
 151   int edit_frame_width =
 152       rect.width() - icon_frame.width() - kPadding - menu_button_frame.width();
 153   if (!speech_button_frame.IsEmpty())
 154     edit_frame_width -= speech_button_frame.width() + kPadding;
 155   edit_frame.set_width(edit_frame_width);
 156   edit_frame.ClampToCenteredSize(
 157       gfx::Size(edit_frame.width(), search_box_->GetPreferredSize().height()));
 158   search_box_->SetBoundsRect(edit_frame);
 159 }
 160
 161 bool SearchBoxView::OnMouseWheel(const ui::MouseWheelEvent& event) {
 162   if (contents_view_)
 163     return contents_view_->OnMouseWheel(event);
 164
 165   return false;
 166 }
 167
 168 void SearchBoxView::UpdateModel() {
 169   // Temporarily remove from observer to ignore notifications caused by us.
 170   model_->search_box()->RemoveObserver(this);
 171   model_->search_box()->SetText(search_box_->text());
 172   model_->search_box()->SetSelectionModel(search_box_->GetSelectionModel());
 173   model_->search_box()->AddObserver(this);
 174 }
 175
 176 void SearchBoxView::NotifyQueryChanged() {
 177   DCHECK(delegate_);
 178   delegate_->QueryChanged(this);
 179 }
 180
 181 void SearchBoxView::ContentsChanged(views::Textfield* sender,
 182                                     const base::string16& new_contents) {
 183   UpdateModel();
 184   view_delegate_->AutoLaunchCanceled();
 185   NotifyQueryChanged();
 186 }
 187
 188 bool SearchBoxView::HandleKeyEvent(views::Textfield* sender,
 189                                    const ui::KeyEvent& key_event) {
 190   bool handled = false;
 191   if (contents_view_ && contents_view_->visible())
 192     handled = contents_view_->OnKeyPressed(key_event);
 193
 194   return handled;
 195 }
 196
 197 void SearchBoxView::ButtonPressed(views::Button* sender,
 198                                   const ui::Event& event) {
 199   DCHECK(speech_button_ && sender == speech_button_);
 200   view_delegate_->ToggleSpeechRecognition();
 201 }
 202
 203 void SearchBoxView::OnMenuButtonClicked(View* source, const gfx::Point& point) {
 204   if (!menu_)
 205     menu_.reset(new AppListMenuViews(view_delegate_));
 206
 207   const gfx::Point menu_location =
 208       menu_button_->GetBoundsInScreen().bottom_right() +
 209       gfx::Vector2d(kMenuXOffsetFromButton, kMenuYOffsetFromButton);
 210   menu_->RunMenuAt(menu_button_, menu_location);
 211 }
 212
 213 void SearchBoxView::IconChanged() {
 214   icon_view_->SetImage(model_->search_box()->icon());
 215 }
 216
 217 void SearchBoxView::SpeechRecognitionButtonPropChanged() {
 218   const SearchBoxModel::SpeechButtonProperty* speech_button_prop =
 219       model_->search_box()->speech_button();
 220   if (speech_button_prop) {
 221     if (!speech_button_) {
 222       speech_button_ = new views::ImageButton(this);
 223       AddChildView(speech_button_);
 224     }
 225
 226     if (view_delegate_->GetSpeechUI()->state() ==
 227         SPEECH_RECOGNITION_HOTWORD_LISTENING) {
 228       speech_button_->SetImage(
 229           views::Button::STATE_NORMAL, &speech_button_prop->on_icon);
 230       speech_button_->SetTooltipText(speech_button_prop->on_tooltip);
 231     } else {
 232       speech_button_->SetImage(
 233           views::Button::STATE_NORMAL, &speech_button_prop->off_icon);
 234       speech_button_->SetTooltipText(speech_button_prop->off_tooltip);
 235     }
 236   } else {
 237     if (speech_button_) {
 238       // Deleting a view will detach it from its parent.
 239       delete speech_button_;
 240       speech_button_ = NULL;
 241     }
 242   }
 243 }
 244
 245 void SearchBoxView::HintTextChanged() {
 246   search_box_->set_placeholder_text(model_->search_box()->hint_text());
 247 }
 248
 249 void SearchBoxView::SelectionModelChanged() {
 250   search_box_->SelectSelectionModel(model_->search_box()->selection_model());
 251 }
 252
 253 void SearchBoxView::TextChanged() {
 254   search_box_->SetText(model_->search_box()->text());
 255   NotifyQueryChanged();
 256 }
 257
 258 void SearchBoxView::OnSpeechRecognitionStateChanged(
 259     SpeechRecognitionState new_state) {
 260   SpeechRecognitionButtonPropChanged();
 261   SchedulePaint();
 262 }
 263
 264 }  // namespace app_list