src/chrome/browser/ui/views/toolbar/home_button.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 "chrome/browser/ui/views/toolbar/home_button.h"
   6
   7 #include "base/prefs/pref_service.h"
   8 #include "chrome/browser/profiles/profile.h"
   9 #include "chrome/browser/ui/browser.h"
  10 #include "chrome/browser/ui/views/settings_api_bubble_helper_views.h"
  11 #include "chrome/common/pref_names.h"
  12 #include "chrome/grit/generated_resources.h"
  13 #include "components/user_prefs/user_prefs.h"
  14 #include "ui/base/l10n/l10n_util.h"
  15 #include "ui/views/bubble/bubble_delegate.h"
  16 #include "ui/views/controls/label.h"
  17 #include "ui/views/controls/link.h"
  18 #include "ui/views/controls/link_listener.h"
  19 #include "ui/views/layout/grid_layout.h"
  20 #include "ui/views/layout/layout_constants.h"
  21 #include "ui/views/widget/widget.h"
  22
  23 // HomePageUndoBubble --------------------------------------------------------
  24
  25 namespace {
  26
  27 class HomePageUndoBubble : public views::BubbleDelegateView,
  28                            public views::LinkListener {
  29  public:
  30   static void ShowBubble(Browser* browser,
  31                          bool undo_value_is_ntp,
  32                          const GURL& undo_url,
  33                          views::View* anchor_view);
  34   static void HideBubble();
  35
  36  private:
  37   HomePageUndoBubble(Browser* browser, bool undo_value_is_ntp,
  38                      const GURL& undo_url, views::View* anchor_view);
  39   virtual ~HomePageUndoBubble();
  40
  41   // views::BubbleDelegateView:
  42   virtual void Init() OVERRIDE;
  43   virtual void WindowClosing() OVERRIDE;
  44
  45   // views::LinkListener:
  46   virtual void LinkClicked(views::Link* source, int event_flags) OVERRIDE;
  47
  48   static HomePageUndoBubble* home_page_undo_bubble_;
  49
  50   Browser* browser_;
  51   bool undo_value_is_ntp_;
  52   GURL undo_url_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(HomePageUndoBubble);
  55 };
  56
  57 // static
  58 HomePageUndoBubble* HomePageUndoBubble::home_page_undo_bubble_ = NULL;
  59
  60 void HomePageUndoBubble::ShowBubble(Browser* browser,
  61                                     bool undo_value_is_ntp,
  62                                     const GURL& undo_url,
  63                                     views::View* anchor_view) {
  64   HideBubble();
  65   home_page_undo_bubble_ = new HomePageUndoBubble(browser,
  66                                                   undo_value_is_ntp,
  67                                                   undo_url,
  68                                                   anchor_view);
  69   views::BubbleDelegateView::CreateBubble(home_page_undo_bubble_)->Show();
  70 }
  71
  72 void HomePageUndoBubble::HideBubble() {
  73   if (home_page_undo_bubble_)
  74     home_page_undo_bubble_->GetWidget()->Close();
  75 }
  76
  77 HomePageUndoBubble::HomePageUndoBubble(
  78     Browser* browser,
  79     bool undo_value_is_ntp,
  80     const GURL& undo_url,
  81     views::View* anchor_view)
  82     : BubbleDelegateView(anchor_view, views::BubbleBorder::TOP_LEFT),
  83       browser_(browser),
  84       undo_value_is_ntp_(undo_value_is_ntp),
  85       undo_url_(undo_url) {
  86 }
  87
  88 HomePageUndoBubble::~HomePageUndoBubble() {
  89 }
  90
  91 void HomePageUndoBubble::Init() {
  92   views::GridLayout* layout = new views::GridLayout(this);
  93   SetLayoutManager(layout);
  94
  95   // Create two columns for the message and the undo link.
  96   views::ColumnSet* cs = layout->AddColumnSet(0);
  97   cs = layout->AddColumnSet(1);
  98   cs->AddColumn(views::GridLayout::LEADING, views::GridLayout::BASELINE, 0,
  99                 views::GridLayout::USE_PREF, 0, 0);
 100   cs->AddPaddingColumn(0, views::kRelatedControlHorizontalSpacing);
 101   cs->AddColumn(views::GridLayout::CENTER, views::GridLayout::BASELINE, 0,
 102                 views::GridLayout::USE_PREF, 0, 0);
 103
 104   views::Label* message_label = new views::Label(
 105       l10n_util::GetStringUTF16(IDS_TOOLBAR_INFORM_SET_HOME_PAGE));
 106   message_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 107   layout->StartRow(0, 1);
 108   layout->AddView(message_label);
 109
 110   views::Link* undo_link = new views::Link(
 111       l10n_util::GetStringUTF16(IDS_ONE_CLICK_BUBBLE_UNDO));
 112   undo_link->set_listener(this);
 113   layout->AddView(undo_link);
 114 }
 115
 116 void HomePageUndoBubble::LinkClicked(views::Link* source, int event_flags) {
 117   PrefService* prefs = user_prefs::UserPrefs::Get(browser_->profile());
 118   prefs->SetBoolean(prefs::kHomePageIsNewTabPage, undo_value_is_ntp_);
 119   prefs->SetString(prefs::kHomePage, undo_url_.spec());
 120
 121   HideBubble();
 122 }
 123
 124 void HomePageUndoBubble::WindowClosing() {
 125   // We have to reset |home_page_undo_bubble_| here, not in our destructor,
 126   // because we'll be hidden first, then destroyed asynchronously.  If we wait
 127   // to reset this, and the user triggers a call to ShowBubble() while the
 128   // window is hidden but not destroyed, GetWidget()->Close() would be
 129   // called twice.
 130   DCHECK_EQ(this, home_page_undo_bubble_);
 131   home_page_undo_bubble_ = NULL;
 132 }
 133
 134 }  // namespace
 135
 136
 137 // HomeButton -----------------------------------------------------------
 138
 139 HomeButton::HomeButton(
 140     views::ButtonListener* listener,
 141     Browser* browser)
 142     : ToolbarButton(listener, NULL),
 143       browser_(browser) {
 144 }
 145
 146 HomeButton::~HomeButton() {
 147 }
 148
 149 bool HomeButton::GetDropFormats(
 150     int* formats,
 151     std::set<OSExchangeData::CustomFormat>* custom_formats) {
 152   *formats = ui::OSExchangeData::URL;
 153   return true;
 154 }
 155
 156 bool HomeButton::CanDrop(const OSExchangeData& data) {
 157   return data.HasURL(ui::OSExchangeData::CONVERT_FILENAMES);
 158 }
 159
 160 int HomeButton::OnDragUpdated(const ui::DropTargetEvent& event) {
 161   return (event.source_operations() & ui::DragDropTypes::DRAG_LINK) ?
 162       ui::DragDropTypes::DRAG_LINK : ui::DragDropTypes::DRAG_NONE;
 163 }
 164
 165 int HomeButton::OnPerformDrop(const ui::DropTargetEvent& event) {
 166   GURL new_homepage_url;
 167   base::string16 title;
 168   if (event.data().GetURLAndTitle(
 169           ui::OSExchangeData::CONVERT_FILENAMES, &new_homepage_url, &title) &&
 170       new_homepage_url.is_valid()) {
 171     PrefService* prefs = browser_->profile()->GetPrefs();
 172     bool old_is_ntp = prefs->GetBoolean(prefs::kHomePageIsNewTabPage);
 173     GURL old_homepage(prefs->GetString(prefs::kHomePage));
 174
 175     prefs->SetBoolean(prefs::kHomePageIsNewTabPage, false);
 176     prefs->SetString(prefs::kHomePage, new_homepage_url.spec());
 177
 178     HomePageUndoBubble::ShowBubble(browser_, old_is_ntp, old_homepage, this);
 179   }
 180   return ui::DragDropTypes::DRAG_NONE;
 181 }
 182
 183 void HomeButton::NotifyClick(const ui::Event& event) {
 184   ToolbarButton::NotifyClick(event);
 185   extensions::MaybeShowExtensionControlledHomeNotification(browser_);
 186 }