ui/app_list/views/search_result_actions_view.cc

   1 // Copyright 2013 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_result_actions_view.h"
   6
   7 #include "ui/app_list/views/search_result_actions_view_delegate.h"
   8 #include "ui/base/resource/resource_bundle.h"
   9 #include "ui/gfx/canvas.h"
  10 #include "ui/views/border.h"
  11 #include "ui/views/controls/button/blue_button.h"
  12 #include "ui/views/controls/button/image_button.h"
  13 #include "ui/views/layout/box_layout.h"
  14
  15 namespace app_list {
  16
  17 SearchResultActionsView::SearchResultActionsView(
  18     SearchResultActionsViewDelegate* delegate)
  19     : delegate_(delegate),
  20       selected_action_(-1) {
  21   SetLayoutManager(
  22       new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 10, 0));
  23 }
  24
  25 SearchResultActionsView::~SearchResultActionsView() {}
  26
  27 void SearchResultActionsView::SetActions(const SearchResult::Actions& actions) {
  28   RemoveAllChildViews(true);
  29
  30   for (size_t i = 0; i < actions.size(); ++i) {
  31     const SearchResult::Action& action = actions.at(i);
  32     if (action.label_text.empty())
  33       CreateImageButton(action);
  34     else
  35       CreateBlueButton(action);
  36   }
  37
  38   PreferredSizeChanged();
  39   SetSelectedAction(-1);
  40 }
  41
  42 void SearchResultActionsView::SetSelectedAction(int action_index) {
  43   // Clamp |action_index| in [-1, child_count()].
  44   action_index = std::min(child_count(), std::max(-1, action_index));
  45
  46   if (selected_action_ == action_index)
  47     return;
  48
  49   selected_action_ = action_index;
  50   SchedulePaint();
  51
  52   if (IsValidActionIndex(selected_action_)) {
  53     child_at(selected_action_)->NotifyAccessibilityEvent(
  54         ui::AccessibilityTypes::EVENT_FOCUS, true);
  55   }
  56 }
  57
  58 bool SearchResultActionsView::IsValidActionIndex(int action_index) const {
  59   return action_index >= 0 && action_index < child_count();
  60 }
  61
  62 void SearchResultActionsView::CreateImageButton(
  63     const SearchResult::Action& action) {
  64   views::ImageButton* button = new views::ImageButton(this);
  65   button->SetBorder(views::Border::CreateEmptyBorder(0, 9, 0, 9));
  66   button->SetAccessibleName(action.tooltip_text);
  67   button->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
  68                             views::ImageButton::ALIGN_MIDDLE);
  69   button->SetImage(views::CustomButton::STATE_NORMAL, &action.base_image);
  70   button->SetImage(views::CustomButton::STATE_HOVERED, &action.hover_image);
  71   button->SetImage(views::CustomButton::STATE_PRESSED, &action.pressed_image);
  72   button->SetTooltipText(action.tooltip_text);
  73   AddChildView(button);
  74 }
  75
  76 void SearchResultActionsView::CreateBlueButton(
  77     const SearchResult::Action& action) {
  78   views::BlueButton* button = new views::BlueButton(this, action.label_text);
  79   button->SetAccessibleName(action.label_text);
  80   button->SetTooltipText(action.tooltip_text);
  81   button->SetFontList(ui::ResourceBundle::GetSharedInstance().GetFontList(
  82       ui::ResourceBundle::SmallBoldFont));
  83   button->SetFocusable(false);
  84   AddChildView(button);
  85 }
  86
  87 void SearchResultActionsView::OnPaint(gfx::Canvas* canvas) {
  88   if (!IsValidActionIndex(selected_action_))
  89     return;
  90
  91   const gfx::Rect active_action_bounds(child_at(selected_action_)->bounds());
  92   const SkColor kActiveActionBackground = SkColorSetRGB(0xA0, 0xA0, 0xA0);
  93   canvas->FillRect(active_action_bounds, kActiveActionBackground);
  94 }
  95
  96 void SearchResultActionsView::ButtonPressed(views::Button* sender,
  97                                             const ui::Event& event) {
  98   if (!delegate_)
  99     return;
 100
 101   const int index = GetIndexOf(sender);
 102   DCHECK_NE(-1, index);
 103   delegate_->OnSearchResultActionActivated(index, event.flags());
 104 }
 105
 106 }  // namespace app_list