src/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 <algorithm>
   8
   9 #include "ui/app_list/views/search_result_actions_view_delegate.h"
  10 #include "ui/base/resource/resource_bundle.h"
  11 #include "ui/gfx/canvas.h"
  12 #include "ui/views/border.h"
  13 #include "ui/views/controls/button/blue_button.h"
  14 #include "ui/views/controls/button/image_button.h"
  15 #include "ui/views/layout/box_layout.h"
  16
  17 namespace app_list {
  18
  19 SearchResultActionsView::SearchResultActionsView(
  20     SearchResultActionsViewDelegate* delegate)
  21     : delegate_(delegate),
  22       selected_action_(-1) {
  23   SetLayoutManager(
  24       new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 10, 0));
  25 }
  26
  27 SearchResultActionsView::~SearchResultActionsView() {}
  28
  29 void SearchResultActionsView::SetActions(const SearchResult::Actions& actions) {
  30   RemoveAllChildViews(true);
  31
  32   for (size_t i = 0; i < actions.size(); ++i) {
  33     const SearchResult::Action& action = actions.at(i);
  34     if (action.label_text.empty())
  35       CreateImageButton(action);
  36     else
  37       CreateBlueButton(action);
  38   }
  39
  40   PreferredSizeChanged();
  41   SetSelectedAction(-1);
  42 }
  43
  44 void SearchResultActionsView::SetSelectedAction(int action_index) {
  45   // Clamp |action_index| in [-1, child_count()].
  46   action_index = std::min(child_count(), std::max(-1, action_index));
  47
  48   if (selected_action_ == action_index)
  49     return;
  50
  51   selected_action_ = action_index;
  52   SchedulePaint();
  53
  54   if (IsValidActionIndex(selected_action_)) {
  55     child_at(selected_action_)->NotifyAccessibilityEvent(
  56         ui::AX_EVENT_FOCUS, true);
  57   }
  58 }
  59
  60 bool SearchResultActionsView::IsValidActionIndex(int action_index) const {
  61   return action_index >= 0 && action_index < child_count();
  62 }
  63
  64 void SearchResultActionsView::CreateImageButton(
  65     const SearchResult::Action& action) {
  66   views::ImageButton* button = new views::ImageButton(this);
  67   button->SetBorder(views::Border::CreateEmptyBorder(0, 9, 0, 9));
  68   button->SetAccessibleName(action.tooltip_text);
  69   button->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
  70                             views::ImageButton::ALIGN_MIDDLE);
  71   button->SetImage(views::CustomButton::STATE_NORMAL, &action.base_image);
  72   button->SetImage(views::CustomButton::STATE_HOVERED, &action.hover_image);
  73   button->SetImage(views::CustomButton::STATE_PRESSED, &action.pressed_image);
  74   button->SetTooltipText(action.tooltip_text);
  75   AddChildView(button);
  76 }
  77
  78 void SearchResultActionsView::CreateBlueButton(
  79     const SearchResult::Action& action) {
  80   views::BlueButton* button = new views::BlueButton(this, action.label_text);
  81   button->SetAccessibleName(action.label_text);
  82   button->SetTooltipText(action.tooltip_text);
  83   button->SetFontList(ui::ResourceBundle::GetSharedInstance().GetFontList(
  84       ui::ResourceBundle::SmallBoldFont));
  85   button->SetFocusable(false);
  86   AddChildView(button);
  87 }
  88
  89 void SearchResultActionsView::OnPaint(gfx::Canvas* canvas) {
  90   if (!IsValidActionIndex(selected_action_))
  91     return;
  92
  93   const gfx::Rect active_action_bounds(child_at(selected_action_)->bounds());
  94   const SkColor kActiveActionBackground = SkColorSetRGB(0xA0, 0xA0, 0xA0);
  95   canvas->FillRect(active_action_bounds, kActiveActionBackground);
  96 }
  97
  98 void SearchResultActionsView::ButtonPressed(views::Button* sender,
  99                                             const ui::Event& event) {
 100   if (!delegate_)
 101     return;
 102
 103   const int index = GetIndexOf(sender);
 104   DCHECK_NE(-1, index);
 105   delegate_->OnSearchResultActionActivated(index, event.flags());
 106 }
 107
 108 }  // namespace app_list