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_constants.h"
  10 #include "ui/app_list/app_list_model.h"
  11 #include "ui/app_list/app_list_switches.h"
  12 #include "ui/app_list/app_list_view_delegate.h"
  13 #include "ui/app_list/search_box_model.h"
  14 #include "ui/app_list/speech_ui_model.h"
  15 #include "ui/app_list/views/app_list_menu_views.h"
  16 #include "ui/app_list/views/search_box_view_delegate.h"
  17 #include "ui/base/resource/resource_bundle.h"
  18 #include "ui/events/event.h"
  19 #include "ui/gfx/canvas.h"
  20 #include "ui/resources/grit/ui_resources.h"
  21 #include "ui/views/border.h"
  22 #include "ui/views/controls/button/image_button.h"
  23 #include "ui/views/controls/button/menu_button.h"
  24 #include "ui/views/controls/image_view.h"
  25 #include "ui/views/controls/textfield/textfield.h"
  26 #include "ui/views/layout/box_layout.h"
  27
  28 namespace app_list {
  29
  30 namespace {
  31
  32 const int kPadding = 14;
  33 const int kPreferredWidth = 360;
  34 const int kPreferredHeight = 48;
  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 const int kBackgroundBorderWidth = 1;
  43 const int kBackgroundBorderBottomWidth = 1;
  44 const int kBackgroundBorderCornerRadius = 2;
  45 const SkColor kBackgroundBorderColor = SkColorSetRGB(0xEE, 0xEE, 0xEE);
  46 const SkColor kBackgroundBorderBottomColor = SkColorSetRGB(0xCC, 0xCC, 0xCC);
  47
  48 // A background that paints a solid white rounded rect with a thin grey border.
  49 class ExperimentalSearchBoxBackground : public views::Background {
  50  public:
  51   ExperimentalSearchBoxBackground() {}
  52   virtual ~ExperimentalSearchBoxBackground() {}
  53
  54  private:
  55   // views::Background overrides:
  56   virtual void Paint(gfx::Canvas* canvas, views::View* view) const override {
  57     gfx::Rect bounds = view->GetContentsBounds();
  58
  59     SkPaint paint;
  60     paint.setFlags(SkPaint::kAntiAlias_Flag);
  61     paint.setColor(kBackgroundBorderColor);
  62     canvas->DrawRoundRect(bounds, kBackgroundBorderCornerRadius, paint);
  63     bounds.Inset(kBackgroundBorderWidth,
  64                  kBackgroundBorderWidth,
  65                  kBackgroundBorderWidth,
  66                  0);
  67     paint.setColor(kBackgroundBorderBottomColor);
  68     canvas->DrawRoundRect(bounds, kBackgroundBorderCornerRadius, paint);
  69     bounds.Inset(0, 0, 0, kBackgroundBorderBottomWidth);
  70     paint.setColor(kSearchBoxBackground);
  71     canvas->DrawRoundRect(bounds, kBackgroundBorderCornerRadius, paint);
  72   }
  73
  74   DISALLOW_COPY_AND_ASSIGN(ExperimentalSearchBoxBackground);
  75 };
  76
  77 }  // namespace
  78
  79 SearchBoxView::SearchBoxView(SearchBoxViewDelegate* delegate,
  80                              AppListViewDelegate* view_delegate)
  81     : delegate_(delegate),
  82       view_delegate_(view_delegate),
  83       model_(NULL),
  84       icon_view_(NULL),
  85       speech_button_(NULL),
  86       search_box_(new views::Textfield),
  87       contents_view_(NULL) {
  88   if (switches::IsExperimentalAppListEnabled()) {
  89     set_background(new ExperimentalSearchBoxBackground());
  90   } else {
  91     set_background(
  92         views::Background::CreateSolidBackground(kSearchBoxBackground));
  93     SetBorder(
  94         views::Border::CreateSolidSidedBorder(0, 0, 1, 0, kTopSeparatorColor));
  95     icon_view_ = new views::ImageView;
  96     AddChildView(icon_view_);
  97   }
  98
  99   views::BoxLayout* layout =
 100       new views::BoxLayout(views::BoxLayout::kHorizontal,
 101                            kPadding,
 102                            0,
 103                            kPadding - views::Textfield::kTextPadding);
 104   SetLayoutManager(layout);
 105   layout->set_cross_axis_alignment(
 106       views::BoxLayout::CROSS_AXIS_ALIGNMENT_CENTER);
 107   layout->set_minimum_cross_axis_size(kPreferredHeight);
 108
 109   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 110
 111   search_box_->SetBorder(views::Border::NullBorder());
 112   search_box_->SetFontList(rb.GetFontList(ui::ResourceBundle::MediumFont));
 113   search_box_->set_placeholder_text_color(kHintTextColor);
 114   search_box_->set_controller(this);
 115   AddChildView(search_box_);
 116   layout->SetFlexForView(search_box_, 1);
 117
 118 #if !defined(OS_CHROMEOS)
 119   menu_button_ = new views::MenuButton(NULL, base::string16(), this, false);
 120   menu_button_->SetBorder(views::Border::NullBorder());
 121   menu_button_->SetImage(views::Button::STATE_NORMAL,
 122                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_NORMAL));
 123   menu_button_->SetImage(views::Button::STATE_HOVERED,
 124                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_HOVER));
 125   menu_button_->SetImage(views::Button::STATE_PRESSED,
 126                          *rb.GetImageSkiaNamed(IDR_APP_LIST_TOOLS_PRESSED));
 127   AddChildView(menu_button_);
 128 #endif
 129
 130   view_delegate_->GetSpeechUI()->AddObserver(this);
 131   ModelChanged();
 132 }
 133
 134 SearchBoxView::~SearchBoxView() {
 135   view_delegate_->GetSpeechUI()->RemoveObserver(this);
 136   model_->search_box()->RemoveObserver(this);
 137 }
 138
 139 void SearchBoxView::ModelChanged() {
 140   if (model_)
 141     model_->search_box()->RemoveObserver(this);
 142
 143   model_ = view_delegate_->GetModel();
 144   DCHECK(model_);
 145   model_->search_box()->AddObserver(this);
 146   IconChanged();
 147   SpeechRecognitionButtonPropChanged();
 148   HintTextChanged();
 149 }
 150
 151 bool SearchBoxView::HasSearch() const {
 152   return !search_box_->text().empty();
 153 }
 154
 155 void SearchBoxView::ClearSearch() {
 156   search_box_->SetText(base::string16());
 157   view_delegate_->AutoLaunchCanceled();
 158   // Updates model and fires query changed manually because SetText() above
 159   // does not generate ContentsChanged() notification.
 160   UpdateModel();
 161   NotifyQueryChanged();
 162 }
 163
 164 void SearchBoxView::InvalidateMenu() {
 165   menu_.reset();
 166 }
 167
 168 gfx::Size SearchBoxView::GetPreferredSize() const {
 169   return gfx::Size(kPreferredWidth, kPreferredHeight);
 170 }
 171
 172 bool SearchBoxView::OnMouseWheel(const ui::MouseWheelEvent& event) {
 173   if (contents_view_)
 174     return contents_view_->OnMouseWheel(event);
 175
 176   return false;
 177 }
 178
 179 void SearchBoxView::UpdateModel() {
 180   // Temporarily remove from observer to ignore notifications caused by us.
 181   model_->search_box()->RemoveObserver(this);
 182   model_->search_box()->SetText(search_box_->text());
 183   model_->search_box()->SetSelectionModel(search_box_->GetSelectionModel());
 184   model_->search_box()->AddObserver(this);
 185 }
 186
 187 void SearchBoxView::NotifyQueryChanged() {
 188   DCHECK(delegate_);
 189   delegate_->QueryChanged(this);
 190 }
 191
 192 void SearchBoxView::ContentsChanged(views::Textfield* sender,
 193                                     const base::string16& new_contents) {
 194   UpdateModel();
 195   view_delegate_->AutoLaunchCanceled();
 196   NotifyQueryChanged();
 197 }
 198
 199 bool SearchBoxView::HandleKeyEvent(views::Textfield* sender,
 200                                    const ui::KeyEvent& key_event) {
 201   bool handled = false;
 202   if (contents_view_ && contents_view_->visible())
 203     handled = contents_view_->OnKeyPressed(key_event);
 204
 205   return handled;
 206 }
 207
 208 void SearchBoxView::ButtonPressed(views::Button* sender,
 209                                   const ui::Event& event) {
 210   DCHECK(speech_button_ && sender == speech_button_);
 211   view_delegate_->ToggleSpeechRecognition();
 212 }
 213
 214 void SearchBoxView::OnMenuButtonClicked(View* source, const gfx::Point& point) {
 215   if (!menu_)
 216     menu_.reset(new AppListMenuViews(view_delegate_));
 217
 218   const gfx::Point menu_location =
 219       menu_button_->GetBoundsInScreen().bottom_right() +
 220       gfx::Vector2d(kMenuXOffsetFromButton, kMenuYOffsetFromButton);
 221   menu_->RunMenuAt(menu_button_, menu_location);
 222 }
 223
 224 void SearchBoxView::IconChanged() {
 225   if (icon_view_)
 226     icon_view_->SetImage(model_->search_box()->icon());
 227 }
 228
 229 void SearchBoxView::SpeechRecognitionButtonPropChanged() {
 230   const SearchBoxModel::SpeechButtonProperty* speech_button_prop =
 231       model_->search_box()->speech_button();
 232   if (speech_button_prop) {
 233     if (!speech_button_) {
 234       speech_button_ = new views::ImageButton(this);
 235       AddChildView(speech_button_);
 236     }
 237
 238     if (view_delegate_->GetSpeechUI()->state() ==
 239         SPEECH_RECOGNITION_HOTWORD_LISTENING) {
 240       speech_button_->SetImage(
 241           views::Button::STATE_NORMAL, &speech_button_prop->on_icon);
 242       speech_button_->SetTooltipText(speech_button_prop->on_tooltip);
 243     } else {
 244       speech_button_->SetImage(
 245           views::Button::STATE_NORMAL, &speech_button_prop->off_icon);
 246       speech_button_->SetTooltipText(speech_button_prop->off_tooltip);
 247     }
 248   } else {
 249     if (speech_button_) {
 250       // Deleting a view will detach it from its parent.
 251       delete speech_button_;
 252       speech_button_ = NULL;
 253     }
 254   }
 255 }
 256
 257 void SearchBoxView::HintTextChanged() {
 258   search_box_->set_placeholder_text(model_->search_box()->hint_text());
 259 }
 260
 261 void SearchBoxView::SelectionModelChanged() {
 262   search_box_->SelectSelectionModel(model_->search_box()->selection_model());
 263 }
 264
 265 void SearchBoxView::TextChanged() {
 266   search_box_->SetText(model_->search_box()->text());
 267   NotifyQueryChanged();
 268 }
 269
 270 void SearchBoxView::OnSpeechRecognitionStateChanged(
 271     SpeechRecognitionState new_state) {
 272   SpeechRecognitionButtonPropChanged();
 273   SchedulePaint();
 274 }
 275
 276 }  // namespace app_list