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 "ui/app_list/app_list_model.h"
  10 #include "ui/app_list/app_list_switches.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/gfx/canvas.h"
  19 #include "ui/resources/grit/ui_resources.h"
  20 #include "ui/views/border.h"
  21 #include "ui/views/controls/button/image_button.h"
  22 #include "ui/views/controls/button/menu_button.h"
  23 #include "ui/views/controls/image_view.h"
  24 #include "ui/views/controls/textfield/textfield.h"
  25 #include "ui/views/layout/box_layout.h"
  26
  27 namespace app_list {
  28
  29 namespace {
  30
  31 const int kPadding = 14;
  32 const int kPreferredWidth = 360;
  33 const int kPreferredHeight = 48;
  34
  35 const SkColor kHintTextColor = SkColorSetRGB(0xA0, 0xA0, 0xA0);
  36
  37 // Menu offset relative to the bottom-right corner of the menu button.
  38 const int kMenuYOffsetFromButton = -4;
  39 const int kMenuXOffsetFromButton = -7;
  40
  41 // Experimental app list constants.
  42 const int kExperimentalSearchBoxHeight = 37;
  43
  44 const int kBackgroundBorderWidth = 1;
  45 const int kBackgroundBorderBottomWidth = 1;
  46 const int kBackgroundBorderCornerRadius = 2;
  47 const SkColor kBackgroundBorderColor = SkColorSetRGB(0xEE, 0xEE, 0xEE);
  48 const SkColor kBackgroundBorderBottomColor = SkColorSetRGB(0xCC, 0xCC, 0xCC);
  49
  50 // A background that paints a solid white rounded rect with a thin grey border.
  51 class SearchBoxBackground : public views::Background {
  52  public:
  53   SearchBoxBackground() {}
  54   virtual ~SearchBoxBackground() {}
  55
  56  private:
  57   // views::Background overrides:
  58   virtual void Paint(gfx::Canvas* canvas, views::View* view) const OVERRIDE {
  59     gfx::Rect bounds = view->GetContentsBounds();
  60
  61     SkPaint paint;
  62     paint.setFlags(SkPaint::kAntiAlias_Flag);
  63     paint.setColor(kBackgroundBorderColor);
  64     canvas->DrawRoundRect(bounds, kBackgroundBorderCornerRadius, paint);
  65     bounds.Inset(kBackgroundBorderWidth,
  66                  kBackgroundBorderWidth,
  67                  kBackgroundBorderWidth,
  68                  0);
  69     paint.setColor(kBackgroundBorderBottomColor);
  70     canvas->DrawRoundRect(bounds, kBackgroundBorderCornerRadius, paint);
  71     bounds.Inset(0, 0, 0, kBackgroundBorderBottomWidth);
  72     paint.setColor(SK_ColorWHITE);
  73     canvas->DrawRoundRect(bounds, kBackgroundBorderCornerRadius, paint);
  74   }
  75
  76   DISALLOW_COPY_AND_ASSIGN(SearchBoxBackground);
  77 };
  78
  79 }  // namespace
  80
  81 SearchBoxView::SearchBoxView(SearchBoxViewDelegate* delegate,
  82                              AppListViewDelegate* view_delegate)
  83     : delegate_(delegate),
  84       view_delegate_(view_delegate),
  85       model_(NULL),
  86       icon_view_(new views::ImageView),
  87       speech_button_(NULL),
  88       search_box_(new views::Textfield),
  89       contents_view_(NULL) {
  90   AddChildView(icon_view_);
  91   if (switches::IsExperimentalAppListEnabled())
  92     set_background(new SearchBoxBackground());
  93
  94   views::BoxLayout* layout = new views::BoxLayout(
  95       views::BoxLayout::kHorizontal, kPadding, 0, kPadding);
  96   SetLayoutManager(layout);
  97   layout->set_cross_axis_alignment(
  98       views::BoxLayout::CROSS_AXIS_ALIGNMENT_CENTER);
  99   layout->set_minimum_cross_axis_size(switches::IsExperimentalAppListEnabled()
 100                                           ? kExperimentalSearchBoxHeight
 101                                           : kPreferredHeight);
 102
 103   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 104
 105   search_box_->SetBorder(views::Border::NullBorder());
 106   search_box_->SetFontList(rb.GetFontList(ui::ResourceBundle::MediumFont));
 107   search_box_->set_placeholder_text_color(kHintTextColor);
 108   search_box_->set_controller(this);
 109   AddChildView(search_box_);
 110   layout->SetFlexForView(search_box_, 1);
 111
 112 #if !defined(OS_CHROMEOS)
 113   menu_button_ = new views::MenuButton(NULL, base::string16(), this, false);
 114   menu_button_->SetBorder(views::Border::NullBorder());
 115   menu_button_->SetImage(views::Button::STATE_NORMAL,
 116                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_NORMAL));
 117   menu_button_->SetImage(views::Button::STATE_HOVERED,
 118                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_HOVER));
 119   menu_button_->SetImage(views::Button::STATE_PRESSED,
 120                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_PRESSED));
 121   AddChildView(menu_button_);
 122 #endif
 123
 124   view_delegate_->GetSpeechUI()->AddObserver(this);
 125   ModelChanged();
 126 }
 127
 128 SearchBoxView::~SearchBoxView() {
 129   view_delegate_->GetSpeechUI()->RemoveObserver(this);
 130   model_->search_box()->RemoveObserver(this);
 131 }
 132
 133 void SearchBoxView::ModelChanged() {
 134   if (model_)
 135     model_->search_box()->RemoveObserver(this);
 136
 137   model_ = view_delegate_->GetModel();
 138   DCHECK(model_);
 139   model_->search_box()->AddObserver(this);
 140   IconChanged();
 141   SpeechRecognitionButtonPropChanged();
 142   HintTextChanged();
 143 }
 144
 145 bool SearchBoxView::HasSearch() const {
 146   return !search_box_->text().empty();
 147 }
 148
 149 void SearchBoxView::ClearSearch() {
 150   search_box_->SetText(base::string16());
 151   view_delegate_->AutoLaunchCanceled();
 152   // Updates model and fires query changed manually because SetText() above
 153   // does not generate ContentsChanged() notification.
 154   UpdateModel();
 155   NotifyQueryChanged();
 156 }
 157
 158 void SearchBoxView::InvalidateMenu() {
 159   menu_.reset();
 160 }
 161
 162 gfx::Size SearchBoxView::GetPreferredSize() const {
 163   return gfx::Size(kPreferredWidth,
 164                    switches::IsExperimentalAppListEnabled()
 165                        ? kExperimentalSearchBoxHeight
 166                        : kPreferredHeight);
 167 }
 168
 169 bool SearchBoxView::OnMouseWheel(const ui::MouseWheelEvent& event) {
 170   if (contents_view_)
 171     return contents_view_->OnMouseWheel(event);
 172
 173   return false;
 174 }
 175
 176 void SearchBoxView::UpdateModel() {
 177   // Temporarily remove from observer to ignore notifications caused by us.
 178   model_->search_box()->RemoveObserver(this);
 179   model_->search_box()->SetText(search_box_->text());
 180   model_->search_box()->SetSelectionModel(search_box_->GetSelectionModel());
 181   model_->search_box()->AddObserver(this);
 182 }
 183
 184 void SearchBoxView::NotifyQueryChanged() {
 185   DCHECK(delegate_);
 186   delegate_->QueryChanged(this);
 187 }
 188
 189 void SearchBoxView::ContentsChanged(views::Textfield* sender,
 190                                     const base::string16& new_contents) {
 191   UpdateModel();
 192   view_delegate_->AutoLaunchCanceled();
 193   NotifyQueryChanged();
 194 }
 195
 196 bool SearchBoxView::HandleKeyEvent(views::Textfield* sender,
 197                                    const ui::KeyEvent& key_event) {
 198   bool handled = false;
 199   if (contents_view_ && contents_view_->visible())
 200     handled = contents_view_->OnKeyPressed(key_event);
 201
 202   return handled;
 203 }
 204
 205 void SearchBoxView::ButtonPressed(views::Button* sender,
 206                                   const ui::Event& event) {
 207   DCHECK(speech_button_ && sender == speech_button_);
 208   view_delegate_->ToggleSpeechRecognition();
 209 }
 210
 211 void SearchBoxView::OnMenuButtonClicked(View* source, const gfx::Point& point) {
 212   if (!menu_)
 213     menu_.reset(new AppListMenuViews(view_delegate_));
 214
 215   const gfx::Point menu_location =
 216       menu_button_->GetBoundsInScreen().bottom_right() +
 217       gfx::Vector2d(kMenuXOffsetFromButton, kMenuYOffsetFromButton);
 218   menu_->RunMenuAt(menu_button_, menu_location);
 219 }
 220
 221 void SearchBoxView::IconChanged() {
 222   icon_view_->SetImage(model_->search_box()->icon());
 223 }
 224
 225 void SearchBoxView::SpeechRecognitionButtonPropChanged() {
 226   const SearchBoxModel::SpeechButtonProperty* speech_button_prop =
 227       model_->search_box()->speech_button();
 228   if (speech_button_prop) {
 229     if (!speech_button_) {
 230       speech_button_ = new views::ImageButton(this);
 231       AddChildView(speech_button_);
 232     }
 233
 234     if (view_delegate_->GetSpeechUI()->state() ==
 235         SPEECH_RECOGNITION_HOTWORD_LISTENING) {
 236       speech_button_->SetImage(
 237           views::Button::STATE_NORMAL, &speech_button_prop->on_icon);
 238       speech_button_->SetTooltipText(speech_button_prop->on_tooltip);
 239     } else {
 240       speech_button_->SetImage(
 241           views::Button::STATE_NORMAL, &speech_button_prop->off_icon);
 242       speech_button_->SetTooltipText(speech_button_prop->off_tooltip);
 243     }
 244   } else {
 245     if (speech_button_) {
 246       // Deleting a view will detach it from its parent.
 247       delete speech_button_;
 248       speech_button_ = NULL;
 249     }
 250   }
 251 }
 252
 253 void SearchBoxView::HintTextChanged() {
 254   search_box_->set_placeholder_text(model_->search_box()->hint_text());
 255 }
 256
 257 void SearchBoxView::SelectionModelChanged() {
 258   search_box_->SelectSelectionModel(model_->search_box()->selection_model());
 259 }
 260
 261 void SearchBoxView::TextChanged() {
 262   search_box_->SetText(model_->search_box()->text());
 263   NotifyQueryChanged();
 264 }
 265
 266 void SearchBoxView::OnSpeechRecognitionStateChanged(
 267     SpeechRecognitionState new_state) {
 268   SpeechRecognitionButtonPropChanged();
 269   SchedulePaint();
 270 }
 271
 272 }  // namespace app_list