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/l10n/l10n_util.h"
  17 #include "ui/base/resource/resource_bundle.h"
  18 #include "ui/events/event.h"
  19 #include "ui/views/border.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_->SetImage(views::Button::STATE_NORMAL,
  62                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_NORMAL));
  63   menu_button_->SetImage(views::Button::STATE_HOVERED,
  64                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_HOVER));
  65   menu_button_->SetImage(views::Button::STATE_PRESSED,
  66                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_PRESSED));
  67   AddChildView(menu_button_);
  68 #endif
  69
  70   search_box_->SetBorder(views::Border::NullBorder());
  71   search_box_->SetFontList(rb.GetFontList(ui::ResourceBundle::MediumFont));
  72   search_box_->set_placeholder_text_color(kHintTextColor);
  73   search_box_->set_controller(this);
  74   AddChildView(search_box_);
  75
  76   view_delegate_->GetSpeechUI()->AddObserver(this);
  77   ModelChanged();
  78 }
  79
  80 SearchBoxView::~SearchBoxView() {
  81   view_delegate_->GetSpeechUI()->RemoveObserver(this);
  82   model_->search_box()->RemoveObserver(this);
  83 }
  84
  85 void SearchBoxView::ModelChanged() {
  86   if (model_)
  87     model_->search_box()->RemoveObserver(this);
  88
  89   model_ = view_delegate_->GetModel();
  90   DCHECK(model_);
  91   model_->search_box()->AddObserver(this);
  92   IconChanged();
  93   SpeechRecognitionButtonPropChanged();
  94   HintTextChanged();
  95 }
  96
  97 bool SearchBoxView::HasSearch() const {
  98   return !search_box_->text().empty();
  99 }
 100
 101 void SearchBoxView::ClearSearch() {
 102   search_box_->SetText(base::string16());
 103   view_delegate_->AutoLaunchCanceled();
 104   // Updates model and fires query changed manually because SetText() above
 105   // does not generate ContentsChanged() notification.
 106   UpdateModel();
 107   NotifyQueryChanged();
 108 }
 109
 110 void SearchBoxView::InvalidateMenu() {
 111   menu_.reset();
 112 }
 113
 114 gfx::Size SearchBoxView::GetPreferredSize() const {
 115   return gfx::Size(kPreferredWidth, kPreferredHeight);
 116 }
 117
 118 void SearchBoxView::Layout() {
 119   gfx::Rect rect(GetContentsBounds());
 120   if (rect.IsEmpty())
 121     return;
 122
 123   gfx::Rect icon_frame(rect);
 124   icon_frame.set_width(kIconDimension + 2 * kPadding);
 125   icon_view_->SetBoundsRect(icon_frame);
 126
 127   // Places |speech_button_| if exists. |speech_button_frame| holds its bounds
 128   // to calculate the search box bounds.
 129   gfx::Rect speech_button_frame;
 130   if (speech_button_) {
 131     speech_button_frame = icon_frame;
 132     speech_button_frame.set_x(rect.right() - icon_frame.width());
 133     gfx::Size button_size = speech_button_->GetPreferredSize();
 134     gfx::Point button_origin = speech_button_frame.CenterPoint();
 135     button_origin.Offset(-button_size.width() / 2, -button_size.height() / 2);
 136     speech_button_->SetBoundsRect(gfx::Rect(button_origin, button_size));
 137   }
 138
 139   gfx::Rect menu_button_frame(rect);
 140 #if !defined(OS_CHROMEOS)
 141   menu_button_frame.set_width(kMenuButtonDimension);
 142   menu_button_frame.set_x(rect.right() - menu_button_frame.width() - kPadding);
 143   menu_button_frame.ClampToCenteredSize(gfx::Size(menu_button_frame.width(),
 144                                                   kMenuButtonDimension));
 145   menu_button_->SetBoundsRect(menu_button_frame);
 146 #else
 147   menu_button_frame.set_width(0);
 148 #endif
 149
 150   gfx::Rect edit_frame(rect);
 151   edit_frame.set_x(icon_frame.right());
 152   int edit_frame_width =
 153       rect.width() - icon_frame.width() - kPadding - menu_button_frame.width();
 154   if (!speech_button_frame.IsEmpty())
 155     edit_frame_width -= speech_button_frame.width() + kPadding;
 156   edit_frame.set_width(edit_frame_width);
 157   edit_frame.ClampToCenteredSize(
 158       gfx::Size(edit_frame.width(), search_box_->GetPreferredSize().height()));
 159   search_box_->SetBoundsRect(edit_frame);
 160 }
 161
 162 bool SearchBoxView::OnMouseWheel(const ui::MouseWheelEvent& event) {
 163   if (contents_view_)
 164     return contents_view_->OnMouseWheel(event);
 165
 166   return false;
 167 }
 168
 169 void SearchBoxView::UpdateModel() {
 170   // Temporarily remove from observer to ignore notifications caused by us.
 171   model_->search_box()->RemoveObserver(this);
 172   model_->search_box()->SetText(search_box_->text());
 173   model_->search_box()->SetSelectionModel(search_box_->GetSelectionModel());
 174   model_->search_box()->AddObserver(this);
 175 }
 176
 177 void SearchBoxView::NotifyQueryChanged() {
 178   DCHECK(delegate_);
 179   delegate_->QueryChanged(this);
 180 }
 181
 182 void SearchBoxView::ContentsChanged(views::Textfield* sender,
 183                                     const base::string16& new_contents) {
 184   UpdateModel();
 185   view_delegate_->AutoLaunchCanceled();
 186   NotifyQueryChanged();
 187 }
 188
 189 bool SearchBoxView::HandleKeyEvent(views::Textfield* sender,
 190                                    const ui::KeyEvent& key_event) {
 191   bool handled = false;
 192   if (contents_view_ && contents_view_->visible())
 193     handled = contents_view_->OnKeyPressed(key_event);
 194
 195   return handled;
 196 }
 197
 198 void SearchBoxView::ButtonPressed(views::Button* sender,
 199                                   const ui::Event& event) {
 200   DCHECK(speech_button_ && sender == speech_button_);
 201   view_delegate_->ToggleSpeechRecognition();
 202 }
 203
 204 void SearchBoxView::OnMenuButtonClicked(View* source, const gfx::Point& point) {
 205   if (!menu_)
 206     menu_.reset(new AppListMenuViews(view_delegate_));
 207
 208   const gfx::Point menu_location =
 209       menu_button_->GetBoundsInScreen().bottom_right() +
 210       gfx::Vector2d(kMenuXOffsetFromButton, kMenuYOffsetFromButton);
 211   menu_->RunMenuAt(menu_button_, menu_location);
 212 }
 213
 214 void SearchBoxView::IconChanged() {
 215   icon_view_->SetImage(model_->search_box()->icon());
 216 }
 217
 218 void SearchBoxView::SpeechRecognitionButtonPropChanged() {
 219   const SearchBoxModel::SpeechButtonProperty* speech_button_prop =
 220       model_->search_box()->speech_button();
 221   if (speech_button_prop) {
 222     if (!speech_button_) {
 223       speech_button_ = new views::ImageButton(this);
 224       AddChildView(speech_button_);
 225     }
 226
 227     if (view_delegate_->GetSpeechUI()->state() ==
 228         SPEECH_RECOGNITION_HOTWORD_LISTENING) {
 229       speech_button_->SetImage(
 230           views::Button::STATE_NORMAL, &speech_button_prop->on_icon);
 231       speech_button_->SetTooltipText(speech_button_prop->on_tooltip);
 232     } else {
 233       speech_button_->SetImage(
 234           views::Button::STATE_NORMAL, &speech_button_prop->off_icon);
 235       speech_button_->SetTooltipText(speech_button_prop->off_tooltip);
 236     }
 237   } else {
 238     if (speech_button_) {
 239       // Deleting a view will detach it from its parent.
 240       delete speech_button_;
 241       speech_button_ = NULL;
 242     }
 243   }
 244 }
 245
 246 void SearchBoxView::HintTextChanged() {
 247   search_box_->set_placeholder_text(model_->search_box()->hint_text());
 248 }
 249
 250 void SearchBoxView::SelectionModelChanged() {
 251   search_box_->SelectSelectionModel(model_->search_box()->selection_model());
 252 }
 253
 254 void SearchBoxView::TextChanged() {
 255   search_box_->SetText(model_->search_box()->text());
 256   NotifyQueryChanged();
 257 }
 258
 259 void SearchBoxView::OnSpeechRecognitionStateChanged(
 260     SpeechRecognitionState new_state) {
 261   SpeechRecognitionButtonPropChanged();
 262   SchedulePaint();
 263 }
 264
 265 }  // namespace app_list