src/ui/views/controls/button/radio_button.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/views/controls/button/radio_button.h"
   6
   7 #include "base/logging.h"
   8 #include "grit/ui_resources.h"
   9 #include "ui/base/accessibility/accessible_view_state.h"
  10 #include "ui/base/resource/resource_bundle.h"
  11 #include "ui/views/widget/widget.h"
  12
  13 namespace views {
  14
  15 // static
  16 const char RadioButton::kViewClassName[] = "RadioButton";
  17
  18 RadioButton::RadioButton(const base::string16& label, int group_id)
  19     : Checkbox(label) {
  20   SetGroup(group_id);
  21
  22   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  23
  24   // Unchecked/Unfocused images.
  25   SetCustomImage(false, false, STATE_NORMAL,
  26                  *rb.GetImageSkiaNamed(IDR_RADIO));
  27   SetCustomImage(false, false, STATE_HOVERED,
  28                  *rb.GetImageSkiaNamed(IDR_RADIO_HOVER));
  29   SetCustomImage(false, false, STATE_PRESSED,
  30                  *rb.GetImageSkiaNamed(IDR_RADIO_PRESSED));
  31   SetCustomImage(false, false, STATE_DISABLED,
  32                  *rb.GetImageSkiaNamed(IDR_RADIO_DISABLED));
  33
  34   // Checked/Unfocused images.
  35   SetCustomImage(true, false, STATE_NORMAL,
  36                  *rb.GetImageSkiaNamed(IDR_RADIO_CHECKED));
  37   SetCustomImage(true, false, STATE_HOVERED,
  38                  *rb.GetImageSkiaNamed(IDR_RADIO_CHECKED_HOVER));
  39   SetCustomImage(true, false, STATE_PRESSED,
  40                  *rb.GetImageSkiaNamed(IDR_RADIO_CHECKED_PRESSED));
  41   SetCustomImage(true, false, STATE_DISABLED,
  42                  *rb.GetImageSkiaNamed(IDR_RADIO_CHECKED_DISABLED));
  43
  44   // Unchecked/Focused images.
  45   SetCustomImage(false, true, STATE_NORMAL,
  46                  *rb.GetImageSkiaNamed(IDR_RADIO_FOCUSED));
  47   SetCustomImage(false, true, STATE_HOVERED,
  48                  *rb.GetImageSkiaNamed(IDR_RADIO_FOCUSED_HOVER));
  49   SetCustomImage(false, true, STATE_PRESSED,
  50                  *rb.GetImageSkiaNamed(IDR_RADIO_FOCUSED_PRESSED));
  51
  52   // Checked/Focused images.
  53   SetCustomImage(true, true, STATE_NORMAL,
  54                  *rb.GetImageSkiaNamed(IDR_RADIO_FOCUSED_CHECKED));
  55   SetCustomImage(true, true, STATE_HOVERED,
  56                  *rb.GetImageSkiaNamed(IDR_RADIO_FOCUSED_CHECKED_HOVER));
  57   SetCustomImage(true, true, STATE_PRESSED,
  58                  *rb.GetImageSkiaNamed(IDR_RADIO_FOCUSED_CHECKED_PRESSED));
  59 }
  60
  61 RadioButton::~RadioButton() {
  62 }
  63
  64 void RadioButton::SetChecked(bool checked) {
  65   if (checked == RadioButton::checked())
  66     return;
  67   if (checked) {
  68     // We can't just get the root view here because sometimes the radio
  69     // button isn't attached to a root view (e.g., if it's part of a tab page
  70     // that is currently not active).
  71     View* container = parent();
  72     while (container && container->parent())
  73       container = container->parent();
  74     if (container) {
  75       Views other;
  76       container->GetViewsInGroup(GetGroup(), &other);
  77       for (Views::iterator i(other.begin()); i != other.end(); ++i) {
  78         if (*i != this) {
  79           if (strcmp((*i)->GetClassName(), kViewClassName)) {
  80             NOTREACHED() << "radio-button-nt has same group as other non "
  81                             "radio-button-nt views.";
  82             continue;
  83           }
  84           RadioButton* peer = static_cast<RadioButton*>(*i);
  85           peer->SetChecked(false);
  86         }
  87       }
  88     }
  89   }
  90   Checkbox::SetChecked(checked);
  91 }
  92
  93 const char* RadioButton::GetClassName() const {
  94   return kViewClassName;
  95 }
  96
  97 void RadioButton::GetAccessibleState(ui::AccessibleViewState* state) {
  98   Checkbox::GetAccessibleState(state);
  99   state->role = ui::AccessibilityTypes::ROLE_RADIOBUTTON;
 100 }
 101
 102 View* RadioButton::GetSelectedViewForGroup(int group) {
 103   Views views;
 104   GetWidget()->GetRootView()->GetViewsInGroup(group, &views);
 105   if (views.empty())
 106     return NULL;
 107
 108   for (Views::const_iterator i(views.begin()); i != views.end(); ++i) {
 109     // REVIEW: why don't we check the runtime type like is done above?
 110     RadioButton* radio_button = static_cast<RadioButton*>(*i);
 111     if (radio_button->checked())
 112       return radio_button;
 113   }
 114   return NULL;
 115 }
 116
 117 bool RadioButton::IsGroupFocusTraversable() const {
 118   // When focusing a radio button with tab/shift+tab, only the selected button
 119   // from the group should be focused.
 120   return false;
 121 }
 122
 123 void RadioButton::OnFocus() {
 124   Checkbox::OnFocus();
 125   SetChecked(true);
 126   ui::MouseEvent event(ui::ET_MOUSE_PRESSED, gfx::Point(), gfx::Point(), 0, 0);
 127   LabelButton::NotifyClick(event);
 128 }
 129
 130 void RadioButton::NotifyClick(const ui::Event& event) {
 131   // Set the checked state to true only if we are unchecked, since we can't
 132   // be toggled on and off like a checkbox.
 133   if (!checked())
 134     SetChecked(true);
 135   RequestFocus();
 136   LabelButton::NotifyClick(event);
 137 }
 138
 139 ui::NativeTheme::Part RadioButton::GetThemePart() const {
 140   return ui::NativeTheme::kRadio;
 141 }
 142
 143 }  // namespace views