// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/ui/gtk/location_bar_view_gtk.h"

#include <algorithm>
#include <string>
#include <vector>

#include "base/basictypes.h"
#include "base/command_line.h"
#include "base/i18n/rtl.h"
#include "base/logging.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "chrome/app/chrome_command_ids.h"
#include "chrome/browser/accessibility_events.h"
#include "chrome/browser/alternate_nav_url_fetcher.h"
#include "chrome/browser/autocomplete/autocomplete_edit_view_gtk.h"
#include "chrome/browser/autocomplete/autocomplete_popup_model.h"
#include "chrome/browser/command_updater.h"
#include "chrome/browser/content_setting_bubble_model.h"
#include "chrome/browser/content_setting_image_model.h"
#include "chrome/browser/defaults.h"
#include "chrome/browser/extensions/extension_browser_event_router.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_tabs_module.h"
#include "chrome/browser/instant/instant_controller.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search_engines/template_url.h"
#include "chrome/browser/search_engines/template_url_model.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/gtk/bookmarks/bookmark_bubble_gtk.h"
#include "chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.h"
#include "chrome/browser/ui/gtk/cairo_cached_surface.h"
#include "chrome/browser/ui/gtk/content_setting_bubble_gtk.h"
#include "chrome/browser/ui/gtk/extensions/extension_popup_gtk.h"
#include "chrome/browser/ui/gtk/first_run_bubble.h"
#include "chrome/browser/ui/gtk/gtk_theme_service.h"
#include "chrome/browser/ui/gtk/gtk_util.h"
#include "chrome/browser/ui/gtk/nine_box.h"
#include "chrome/browser/ui/gtk/rounded_window.h"
#include "chrome/browser/ui/gtk/view_id_util.h"
#include "chrome/browser/ui/omnibox/location_bar_util.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_action.h"
#include "chrome/common/extensions/extension_resource.h"
#include "chrome/common/pref_names.h"
#include "content/browser/tab_contents/tab_contents.h"
#include "content/common/notification_service.h"
#include "content/common/page_transition_types.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "net/base/net_util.h"
#include "ui/base/dragdrop/gtk_dnd_util.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas_skia_paint.h"
#include "ui/gfx/font.h"
#include "ui/gfx/gtk_util.h"
#include "webkit/glue/window_open_disposition.h"

namespace {

// We are positioned with a little bit of extra space that we don't use now.
const int kTopMargin = 1;
const int kBottomMargin = 1;
const int kLeftMargin = 1;
const int kRightMargin = 1;
// We draw a border on the top and bottom (but not on left or right).
const int kBorderThickness = 1;

// Left margin of first run bubble.
const int kFirstRunBubbleLeftMargin = 8;
// Extra vertical spacing for first run bubble.
const int kFirstRunBubbleTopMargin = 5;
// Spacing needed to align the bubble with the left side of the omnibox.
const int kFirstRunBubbleLeftSpacing = 4;

// The padding around the top, bottom, and sides of the location bar hbox.
// We don't want to edit control's text to be right against the edge,
// as well the tab to search box and other widgets need to have the padding on
// top and bottom to avoid drawing larger than the location bar space.
const int kHboxBorder = 2;

// Padding between the elements in the bar.
const int kInnerPadding = 2;

// Padding between the right of the star and the edge of the URL entry.
const int kStarRightPadding = 2;

// Colors used to draw the EV certificate rounded bubble.
const GdkColor kEvSecureTextColor = GDK_COLOR_RGB(0x07, 0x95, 0x00);
const GdkColor kEvSecureBackgroundColor = GDK_COLOR_RGB(0xef, 0xfc, 0xef);
const GdkColor kEvSecureBorderColor = GDK_COLOR_RGB(0x90, 0xc3, 0x90);

// Colors used to draw the Tab to Search rounded bubble.
const GdkColor kKeywordBackgroundColor = GDK_COLOR_RGB(0xf0, 0xf4, 0xfa);
const GdkColor kKeywordBorderColor = GDK_COLOR_RGB(0xcb, 0xde, 0xf7);

// Use weak gray for showing search and keyword hint text.
const GdkColor kHintTextColor = GDK_COLOR_RGB(0x75, 0x75, 0x75);

// Size of the rounding of the "Search site for:" box.
const int kCornerSize = 3;

// The time, in ms, that the content setting label is fully displayed, for the
// cases where we animate it into and out of view.
const int kContentSettingImageDisplayTime = 3200;
// The time, in ms, of the animation (open and close).
const int kContentSettingImageAnimationTime = 150;

// Color of border of content setting area (icon/label).
const GdkColor kContentSettingBorderColor = GDK_COLOR_RGB(0xe9, 0xb9, 0x66);
// Colors for the background gradient.
const double kContentSettingTopColor[] = { 0xff / 255.0,
                                           0xf8 / 255.0,
                                           0xd4 / 255.0 };
const double kContentSettingBottomColor[] = { 0xff / 255.0,
                                              0xe6 / 255.0,
                                              0xaf / 255.0 };

// If widget is visible, increment the int pointed to by count.
// Suitible for use with gtk_container_foreach.
void CountVisibleWidgets(GtkWidget* widget, gpointer count) {
  if (GTK_WIDGET_VISIBLE(widget))
    *static_cast<int*>(count) += 1;
}

}  // namespace

////////////////////////////////////////////////////////////////////////////////
// LocationBarViewGtk

// static
const GdkColor LocationBarViewGtk::kBackgroundColor =
    GDK_COLOR_RGB(255, 255, 255);

LocationBarViewGtk::LocationBarViewGtk(Browser* browser)
    : star_image_(NULL),
      starred_(false),
      site_type_alignment_(NULL),
      site_type_event_box_(NULL),
      location_icon_image_(NULL),
      drag_icon_(NULL),
      enable_location_drag_(false),
      security_info_label_(NULL),
      tab_to_search_alignment_(NULL),
      tab_to_search_box_(NULL),
      tab_to_search_full_label_(NULL),
      tab_to_search_partial_label_(NULL),
      tab_to_search_hint_(NULL),
      tab_to_search_hint_leading_label_(NULL),
      tab_to_search_hint_icon_(NULL),
      tab_to_search_hint_trailing_label_(NULL),
      profile_(NULL),
      command_updater_(browser->command_updater()),
      toolbar_model_(browser->toolbar_model()),
      browser_(browser),
      disposition_(CURRENT_TAB),
      transition_(PageTransition::TYPED),
      first_run_bubble_(this),
      popup_window_mode_(false),
      theme_service_(NULL),
      hbox_width_(0),
      entry_box_width_(0),
      show_selected_keyword_(false),
      show_keyword_hint_(false) {
}

LocationBarViewGtk::~LocationBarViewGtk() {
  // All of our widgets should have be children of / owned by the alignment.
  star_.Destroy();
  hbox_.Destroy();
  content_setting_hbox_.Destroy();
  page_action_hbox_.Destroy();
}

void LocationBarViewGtk::Init(bool popup_window_mode) {
  popup_window_mode_ = popup_window_mode;

  // Create the widget first, so we can pass it to the AutocompleteEditViewGtk.
  hbox_.Own(gtk_hbox_new(FALSE, kInnerPadding));
  gtk_container_set_border_width(GTK_CONTAINER(hbox_.get()), kHboxBorder);
  // We will paint for the alignment, to paint the background and border.
  gtk_widget_set_app_paintable(hbox_.get(), TRUE);
  // Redraw the whole location bar when it changes size (e.g., when toggling
  // the home button on/off.
  gtk_widget_set_redraw_on_allocate(hbox_.get(), TRUE);

  // Now initialize the AutocompleteEditViewGtk.
  location_entry_.reset(new AutocompleteEditViewGtk(this,
                                                    toolbar_model_,
                                                    profile_,
                                                    command_updater_,
                                                    popup_window_mode_,
                                                    hbox_.get()));
  location_entry_->Init();

  g_signal_connect(hbox_.get(), "expose-event",
                   G_CALLBACK(&HandleExposeThunk), this);

  BuildSiteTypeArea();

  // Put |tab_to_search_box_|, |location_entry_|, and |tab_to_search_hint_| into
  // a sub hbox, so that we can make this part horizontally shrinkable without
  // affecting other elements in the location bar.
  entry_box_ = gtk_hbox_new(FALSE, kInnerPadding);
  gtk_widget_show(entry_box_);
  gtk_widget_set_size_request(entry_box_, 0, -1);
  gtk_box_pack_start(GTK_BOX(hbox_.get()), entry_box_, TRUE, TRUE, 0);

  // We need to adjust the visibility of the search hint widgets according to
  // the horizontal space in the |entry_box_|.
  g_signal_connect(entry_box_, "size-allocate",
                   G_CALLBACK(&OnEntryBoxSizeAllocateThunk), this);

  // Tab to search (the keyword box on the left hand side).
  tab_to_search_full_label_ = gtk_label_new(NULL);
  tab_to_search_partial_label_ = gtk_label_new(NULL);
  GtkWidget* tab_to_search_label_hbox = gtk_hbox_new(FALSE, 0);
  gtk_box_pack_start(GTK_BOX(tab_to_search_label_hbox),
                     tab_to_search_full_label_, FALSE, FALSE, 0);
  gtk_box_pack_start(GTK_BOX(tab_to_search_label_hbox),
                     tab_to_search_partial_label_, FALSE, FALSE, 0);
  GtkWidget* tab_to_search_hbox = gtk_hbox_new(FALSE, 0);
  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
  tab_to_search_magnifier_ = gtk_image_new_from_pixbuf(
      rb.GetPixbufNamed(IDR_KEYWORD_SEARCH_MAGNIFIER));
  gtk_box_pack_start(GTK_BOX(tab_to_search_hbox), tab_to_search_magnifier_,
                     FALSE, FALSE, 0);
  gtk_util::CenterWidgetInHBox(tab_to_search_hbox, tab_to_search_label_hbox,
                               false, 0);

  // This creates a box around the keyword text with a border, background color,
  // and padding around the text.
  tab_to_search_box_ = gtk_util::CreateGtkBorderBin(
      tab_to_search_hbox, NULL, 1, 1, 1, 3);
  gtk_widget_set_name(tab_to_search_box_, "chrome-tab-to-search-box");
  gtk_util::ActAsRoundedWindow(tab_to_search_box_, kKeywordBorderColor,
                               kCornerSize,
                               gtk_util::ROUNDED_ALL, gtk_util::BORDER_ALL);

  // Put the event box in an alignment to get the padding correct.
  tab_to_search_alignment_ = gtk_alignment_new(0, 0, 1, 1);
  gtk_container_add(GTK_CONTAINER(tab_to_search_alignment_),
                    tab_to_search_box_);
  gtk_box_pack_start(GTK_BOX(entry_box_), tab_to_search_alignment_,
                     FALSE, FALSE, 0);

  // Show all children widgets of |tab_to_search_box_| initially, except
  // |tab_to_search_partial_label_|.
  gtk_widget_show_all(tab_to_search_box_);
  gtk_widget_hide(tab_to_search_partial_label_);

  location_entry_alignment_ = gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
  gtk_container_add(GTK_CONTAINER(location_entry_alignment_),
                    location_entry_->GetNativeView());
  gtk_box_pack_start(GTK_BOX(entry_box_), location_entry_alignment_,
                     TRUE, TRUE, 0);

  // Tab to search notification (the hint on the right hand side).
  tab_to_search_hint_ = gtk_hbox_new(FALSE, 0);
  gtk_widget_set_name(tab_to_search_hint_, "chrome-tab-to-search-hint");
  tab_to_search_hint_leading_label_ = gtk_label_new(NULL);
  gtk_widget_set_sensitive(tab_to_search_hint_leading_label_, FALSE);
  tab_to_search_hint_icon_ = gtk_image_new_from_pixbuf(
      rb.GetPixbufNamed(IDR_LOCATION_BAR_KEYWORD_HINT_TAB));
  tab_to_search_hint_trailing_label_ = gtk_label_new(NULL);
  gtk_widget_set_sensitive(tab_to_search_hint_trailing_label_, FALSE);
  gtk_box_pack_start(GTK_BOX(tab_to_search_hint_),
                     tab_to_search_hint_leading_label_,
                     FALSE, FALSE, 0);
  gtk_box_pack_start(GTK_BOX(tab_to_search_hint_),
                     tab_to_search_hint_icon_,
                     FALSE, FALSE, 0);
  gtk_box_pack_start(GTK_BOX(tab_to_search_hint_),
                     tab_to_search_hint_trailing_label_,
                     FALSE, FALSE, 0);
  // Show all children widgets of |tab_to_search_hint_| initially.
  gtk_widget_show_all(tab_to_search_hint_);
  gtk_widget_hide(tab_to_search_hint_);
  // tab_to_search_hint_ gets hidden initially in OnChanged.  Hiding it here
  // doesn't work, someone is probably calling show_all on our parent box.
  gtk_box_pack_end(GTK_BOX(entry_box_), tab_to_search_hint_, FALSE, FALSE, 0);

  // We don't show the star in popups, app windows, etc.
  if (browser_defaults::bookmarks_enabled && !ShouldOnlyShowLocation()) {
    CreateStarButton();
    gtk_box_pack_end(GTK_BOX(hbox_.get()), star_.get(), FALSE, FALSE, 0);
  }

  content_setting_hbox_.Own(gtk_hbox_new(FALSE, kInnerPadding + 1));
  gtk_widget_set_name(content_setting_hbox_.get(),
                      "chrome-content-setting-hbox");
  gtk_box_pack_end(GTK_BOX(hbox_.get()), content_setting_hbox_.get(),
                   FALSE, FALSE, 1);

  for (int i = 0; i < CONTENT_SETTINGS_NUM_TYPES; ++i) {
    ContentSettingImageViewGtk* content_setting_view =
        new ContentSettingImageViewGtk(
            static_cast<ContentSettingsType>(i), this, profile_);
    content_setting_views_.push_back(content_setting_view);
    gtk_box_pack_end(GTK_BOX(content_setting_hbox_.get()),
                     content_setting_view->widget(), FALSE, FALSE, 0);
  }

  page_action_hbox_.Own(gtk_hbox_new(FALSE, kInnerPadding));
  gtk_widget_set_name(page_action_hbox_.get(),
                      "chrome-page-action-hbox");
  gtk_box_pack_end(GTK_BOX(hbox_.get()), page_action_hbox_.get(),
                   FALSE, FALSE, 0);

  // Now that we've created the widget hierarchy, connect to the main |hbox_|'s
  // size-allocate so we can do proper resizing and eliding on
  // |security_info_label_|.
  g_signal_connect(hbox_.get(), "size-allocate",
                   G_CALLBACK(&OnHboxSizeAllocateThunk), this);

  registrar_.Add(this,
                 NotificationType::BROWSER_THEME_CHANGED,
                 NotificationService::AllSources());
  edit_bookmarks_enabled_.Init(prefs::kEditBookmarksEnabled,
                               profile_->GetPrefs(), this);

  theme_service_ = GtkThemeService::GetFrom(profile_);
  theme_service_->InitThemesFor(this);
}

void LocationBarViewGtk::BuildSiteTypeArea() {
  location_icon_image_ = gtk_image_new();
  gtk_widget_set_name(location_icon_image_, "chrome-location-icon");

  GtkWidget* icon_alignment = gtk_alignment_new(0, 0, 1, 1);
  gtk_alignment_set_padding(GTK_ALIGNMENT(icon_alignment), 0, 0, 2, 0);
  gtk_container_add(GTK_CONTAINER(icon_alignment), location_icon_image_);
  gtk_widget_show_all(icon_alignment);

  security_info_label_ = gtk_label_new(NULL);
  gtk_label_set_ellipsize(GTK_LABEL(security_info_label_),
                          PANGO_ELLIPSIZE_MIDDLE);
  gtk_widget_modify_fg(GTK_WIDGET(security_info_label_), GTK_STATE_NORMAL,
                       &kEvSecureTextColor);
  gtk_widget_set_name(security_info_label_,
                      "chrome-location-bar-security-info-label");

  GtkWidget* site_type_hbox = gtk_hbox_new(FALSE, 1);
  gtk_box_pack_start(GTK_BOX(site_type_hbox), icon_alignment,
                     FALSE, FALSE, 0);
  gtk_box_pack_start(GTK_BOX(site_type_hbox), security_info_label_,
                     FALSE, FALSE, 2);

  site_type_event_box_ = gtk_event_box_new();
  gtk_widget_modify_bg(site_type_event_box_, GTK_STATE_NORMAL,
                       &kEvSecureBackgroundColor);
  g_signal_connect(site_type_event_box_, "drag-data-get",
                   G_CALLBACK(&OnIconDragDataThunk), this);
  g_signal_connect(site_type_event_box_, "drag-begin",
                   G_CALLBACK(&OnIconDragBeginThunk), this);
  g_signal_connect(site_type_event_box_, "drag-end",
                   G_CALLBACK(&OnIconDragEndThunk), this);

  // Make the event box not visible so it does not paint a background.
  gtk_event_box_set_visible_window(GTK_EVENT_BOX(site_type_event_box_),
                                   FALSE);
  gtk_widget_set_name(site_type_event_box_,
                      "chrome-location-icon-eventbox");
  gtk_container_add(GTK_CONTAINER(site_type_event_box_),
                    site_type_hbox);

  // Put the event box in an alignment to get the padding correct.
  site_type_alignment_ = gtk_alignment_new(0, 0, 1, 1);
  gtk_container_add(GTK_CONTAINER(site_type_alignment_),
                    site_type_event_box_);
  gtk_box_pack_start(GTK_BOX(hbox_.get()), site_type_alignment_,
                     FALSE, FALSE, 0);

  gtk_widget_set_tooltip_text(location_icon_image_,
      l10n_util::GetStringUTF8(IDS_TOOLTIP_LOCATION_ICON).c_str());

  g_signal_connect(site_type_event_box_, "button-release-event",
                   G_CALLBACK(&OnIconReleasedThunk), this);
}

void LocationBarViewGtk::SetSiteTypeDragSource() {
  bool enable = !location_entry()->IsEditingOrEmpty();
  if (enable_location_drag_ == enable)
    return;
  enable_location_drag_ = enable;

  if (!enable) {
    gtk_drag_source_unset(site_type_event_box_);
    return;
  }

  gtk_drag_source_set(site_type_event_box_, GDK_BUTTON1_MASK,
                      NULL, 0, GDK_ACTION_COPY);
  ui::SetSourceTargetListFromCodeMask(site_type_event_box_,
                                      ui::TEXT_PLAIN |
                                      ui::TEXT_URI_LIST |
                                      ui::CHROME_NAMED_URL);
}

void LocationBarViewGtk::SetProfile(Profile* profile) {
  profile_ = profile;
}

TabContents* LocationBarViewGtk::GetTabContents() const {
  return browser_->GetSelectedTabContents();
}

void LocationBarViewGtk::SetPreviewEnabledPageAction(
    ExtensionAction *page_action,
    bool preview_enabled) {
  DCHECK(page_action);
  UpdatePageActions();
  for (ScopedVector<PageActionViewGtk>::iterator iter =
       page_action_views_.begin(); iter != page_action_views_.end();
       ++iter) {
    if ((*iter)->page_action() == page_action) {
      (*iter)->set_preview_enabled(preview_enabled);
      UpdatePageActions();
      return;
    }
  }
}

GtkWidget* LocationBarViewGtk::GetPageActionWidget(
    ExtensionAction *page_action) {
  DCHECK(page_action);
  for (ScopedVector<PageActionViewGtk>::iterator iter =
           page_action_views_.begin();
       iter != page_action_views_.end();
       ++iter) {
    if ((*iter)->page_action() == page_action)
      return (*iter)->widget();
  }
  return NULL;
}

void LocationBarViewGtk::Update(const TabContents* contents) {
  UpdateStarIcon();
  UpdateSiteTypeArea();
  UpdateContentSettingsIcons();
  UpdatePageActions();
  location_entry_->Update(contents);
  // The security level (background color) could have changed, etc.
  if (theme_service_->UseGtkTheme()) {
    // In GTK mode, we need our parent to redraw, as it draws the text entry
    // border.
    gtk_widget_queue_draw(widget()->parent);
  } else {
    gtk_widget_queue_draw(widget());
  }
}

void LocationBarViewGtk::OnAutocompleteAccept(const GURL& url,
    WindowOpenDisposition disposition,
    PageTransition::Type transition,
    const GURL& alternate_nav_url) {
  if (url.is_valid()) {
    location_input_ = UTF8ToWide(url.spec());
    disposition_ = disposition;
    transition_ = transition;

    if (command_updater_) {
      if (!alternate_nav_url.is_valid()) {
        command_updater_->ExecuteCommand(IDC_OPEN_CURRENT_URL);
      } else {
        AlternateNavURLFetcher* fetcher =
            new AlternateNavURLFetcher(alternate_nav_url);
        // The AlternateNavURLFetcher will listen for the pending navigation
        // notification that will be issued as a result of the "open URL." It
        // will automatically install itself into that navigation controller.
        command_updater_->ExecuteCommand(IDC_OPEN_CURRENT_URL);
        if (fetcher->state() == AlternateNavURLFetcher::NOT_STARTED) {
          // I'm not sure this should be reachable, but I'm not also sure enough
          // that it shouldn't to stick in a NOTREACHED().  In any case, this is
          // harmless.
          delete fetcher;
        } else {
          // The navigation controller will delete the fetcher.
        }
      }
    }
  }
}

void LocationBarViewGtk::OnChanged() {
  UpdateSiteTypeArea();

  const string16 keyword(location_entry_->model()->keyword());
  const bool is_keyword_hint = location_entry_->model()->is_keyword_hint();
  show_selected_keyword_ = !keyword.empty() && !is_keyword_hint;
  show_keyword_hint_ = !keyword.empty() && is_keyword_hint;

  if (show_selected_keyword_)
    SetKeywordLabel(keyword);

  if (show_keyword_hint_)
    SetKeywordHintLabel(keyword);

  AdjustChildrenVisibility();
}

void LocationBarViewGtk::OnSelectionBoundsChanged() {
  NOTIMPLEMENTED();
}

void LocationBarViewGtk::CreateStarButton() {
  star_image_ = gtk_image_new();

  GtkWidget* alignment = gtk_alignment_new(0, 0, 1, 1);
  gtk_alignment_set_padding(GTK_ALIGNMENT(alignment), 0, 0,
                            0, kStarRightPadding);
  gtk_container_add(GTK_CONTAINER(alignment), star_image_);

  star_.Own(gtk_event_box_new());
  gtk_event_box_set_visible_window(GTK_EVENT_BOX(star_.get()), FALSE);
  gtk_container_add(GTK_CONTAINER(star_.get()), alignment);
  gtk_widget_show_all(star_.get());
  ViewIDUtil::SetID(star_.get(), VIEW_ID_STAR_BUTTON);

  gtk_widget_set_tooltip_text(star_.get(),
      l10n_util::GetStringUTF8(IDS_TOOLTIP_STAR).c_str());
  g_signal_connect(star_.get(), "button-press-event",
                   G_CALLBACK(OnStarButtonPressThunk), this);
}

void LocationBarViewGtk::OnInputInProgress(bool in_progress) {
  // This is identical to the Windows code, except that we don't proxy the call
  // back through the Toolbar, and just access the model here.
  // The edit should make sure we're only notified when something changes.
  DCHECK(toolbar_model_->input_in_progress() != in_progress);

  toolbar_model_->set_input_in_progress(in_progress);
  Update(NULL);
}

void LocationBarViewGtk::OnKillFocus() {
}

void LocationBarViewGtk::OnSetFocus() {
  AccessibilityTextBoxInfo info(
      profile_,
      l10n_util::GetStringUTF8(IDS_ACCNAME_LOCATION).c_str(),
      false);
  NotificationService::current()->Notify(
      NotificationType::ACCESSIBILITY_CONTROL_FOCUSED,
      Source<Profile>(profile_),
      Details<AccessibilityTextBoxInfo>(&info));

  // Update the keyword and search hint states.
  OnChanged();
}

SkBitmap LocationBarViewGtk::GetFavicon() const {
  return GetTabContents()->GetFavicon();
}

string16 LocationBarViewGtk::GetTitle() const {
  return GetTabContents()->GetTitle();
}

InstantController* LocationBarViewGtk::GetInstant() {
  return browser_->instant();
}

TabContentsWrapper* LocationBarViewGtk::GetTabContentsWrapper() const {
  return browser_->GetSelectedTabContentsWrapper();
}

void LocationBarViewGtk::ShowFirstRunBubble(FirstRun::BubbleType bubble_type) {
  // We need the browser window to be shown before we can show the bubble, but
  // we get called before that's happened.
  Task* task = first_run_bubble_.NewRunnableMethod(
      &LocationBarViewGtk::ShowFirstRunBubbleInternal, bubble_type);
  MessageLoop::current()->PostTask(FROM_HERE, task);
}

void LocationBarViewGtk::SetSuggestedText(const string16& text,
                                          InstantCompleteBehavior behavior) {
  location_entry_->model()->SetSuggestedText(text, behavior);
}

std::wstring LocationBarViewGtk::GetInputString() const {
  return location_input_;
}

WindowOpenDisposition LocationBarViewGtk::GetWindowOpenDisposition() const {
  return disposition_;
}

PageTransition::Type LocationBarViewGtk::GetPageTransition() const {
  return transition_;
}

void LocationBarViewGtk::AcceptInput() {
  location_entry_->model()->AcceptInput(CURRENT_TAB, false);
}

void LocationBarViewGtk::FocusLocation(bool select_all) {
  location_entry_->SetFocus();
  if (select_all)
    location_entry_->SelectAll(true);
}

void LocationBarViewGtk::FocusSearch() {
  location_entry_->SetFocus();
  location_entry_->SetForcedQuery();
}

void LocationBarViewGtk::UpdateContentSettingsIcons() {
  TabContents* tab_contents = GetTabContents();
  bool any_visible = false;
  for (ScopedVector<ContentSettingImageViewGtk>::iterator i(
           content_setting_views_.begin());
       i != content_setting_views_.end(); ++i) {
    (*i)->UpdateFromTabContents(
        toolbar_model_->input_in_progress() ? NULL : tab_contents);
    any_visible = (*i)->IsVisible() || any_visible;
  }

  // If there are no visible content things, hide the top level box so it
  // doesn't mess with padding.
  if (any_visible)
    gtk_widget_show(content_setting_hbox_.get());
  else
    gtk_widget_hide(content_setting_hbox_.get());
}

void LocationBarViewGtk::UpdatePageActions() {
  std::vector<ExtensionAction*> page_actions;
  ExtensionService* service = profile_->GetExtensionService();
  if (!service)
    return;

  // Find all the page actions.
  for (size_t i = 0; i < service->extensions()->size(); ++i) {
    if (service->extensions()->at(i)->page_action())
      page_actions.push_back(service->extensions()->at(i)->page_action());
  }

  // Initialize on the first call, or re-inialize if more extensions have been
  // loaded or added after startup.
  if (page_actions.size() != page_action_views_.size()) {
    page_action_views_.reset();  // Delete the old views (if any).

    for (size_t i = 0; i < page_actions.size(); ++i) {
      page_action_views_.push_back(
          new PageActionViewGtk(this, profile_, page_actions[i]));
      gtk_box_pack_end(GTK_BOX(page_action_hbox_.get()),
                       page_action_views_[i]->widget(), FALSE, FALSE, 0);
    }
    NotificationService::current()->Notify(
        NotificationType::EXTENSION_PAGE_ACTION_COUNT_CHANGED,
        Source<LocationBar>(this),
        NotificationService::NoDetails());
  }

  TabContents* contents = GetTabContents();
  if (!page_action_views_.empty() && contents) {
    GURL url = GURL(WideToUTF8(toolbar_model_->GetText()));

    for (size_t i = 0; i < page_action_views_.size(); i++) {
      page_action_views_[i]->UpdateVisibility(
          toolbar_model_->input_in_progress() ? NULL : contents, url);
    }
  }

  // If there are no visible page actions, hide the hbox too, so that it does
  // not affect the padding in the location bar.
  if (PageActionVisibleCount() && !ShouldOnlyShowLocation())
    gtk_widget_show(page_action_hbox_.get());
  else
    gtk_widget_hide(page_action_hbox_.get());
}

void LocationBarViewGtk::InvalidatePageActions() {
  size_t count_before = page_action_views_.size();
  page_action_views_.reset();
  if (page_action_views_.size() != count_before) {
    NotificationService::current()->Notify(
        NotificationType::EXTENSION_PAGE_ACTION_COUNT_CHANGED,
        Source<LocationBar>(this),
        NotificationService::NoDetails());
  }
}

void LocationBarViewGtk::SaveStateToContents(TabContents* contents) {
  location_entry_->SaveStateToTab(contents);
}

void LocationBarViewGtk::Revert() {
  location_entry_->RevertAll();
}

const AutocompleteEditView* LocationBarViewGtk::location_entry() const {
  return location_entry_.get();
}

AutocompleteEditView* LocationBarViewGtk::location_entry() {
  return location_entry_.get();
}

LocationBarTesting* LocationBarViewGtk::GetLocationBarForTesting() {
  return this;
}

int LocationBarViewGtk::PageActionCount() {
  return page_action_views_.size();
}

int LocationBarViewGtk::PageActionVisibleCount() {
  int count = 0;
  gtk_container_foreach(GTK_CONTAINER(page_action_hbox_.get()),
                        CountVisibleWidgets, &count);
  return count;
}

ExtensionAction* LocationBarViewGtk::GetPageAction(size_t index) {
  if (index >= page_action_views_.size()) {
    NOTREACHED();
    return NULL;
  }

  return page_action_views_[index]->page_action();
}

ExtensionAction* LocationBarViewGtk::GetVisiblePageAction(size_t index) {
  size_t visible_index = 0;
  for (size_t i = 0; i < page_action_views_.size(); ++i) {
    if (page_action_views_[i]->IsVisible()) {
      if (index == visible_index++)
        return page_action_views_[i]->page_action();
    }
  }

  NOTREACHED();
  return NULL;
}

void LocationBarViewGtk::TestPageActionPressed(size_t index) {
  if (index >= page_action_views_.size()) {
    NOTREACHED();
    return;
  }

  page_action_views_[index]->TestActivatePageAction();
}

void LocationBarViewGtk::Observe(NotificationType type,
                                 const NotificationSource& source,
                                 const NotificationDetails& details) {
  if (type.value == NotificationType::PREF_CHANGED) {
    UpdateStarIcon();
    return;
  }

  DCHECK_EQ(type.value, NotificationType::BROWSER_THEME_CHANGED);

  if (theme_service_->UseGtkTheme()) {
    gtk_widget_modify_bg(tab_to_search_box_, GTK_STATE_NORMAL, NULL);

    GdkColor border_color = theme_service_->GetGdkColor(
        ThemeService::COLOR_FRAME);
    gtk_util::SetRoundedWindowBorderColor(tab_to_search_box_, border_color);

    gtk_util::SetLabelColor(tab_to_search_full_label_, NULL);
    gtk_util::SetLabelColor(tab_to_search_partial_label_, NULL);
    gtk_util::SetLabelColor(tab_to_search_hint_leading_label_, NULL);
    gtk_util::SetLabelColor(tab_to_search_hint_trailing_label_, NULL);

    gtk_util::UndoForceFontSize(security_info_label_);
    gtk_util::UndoForceFontSize(tab_to_search_full_label_);
    gtk_util::UndoForceFontSize(tab_to_search_partial_label_);
    gtk_util::UndoForceFontSize(tab_to_search_hint_leading_label_);
    gtk_util::UndoForceFontSize(tab_to_search_hint_trailing_label_);

    gtk_alignment_set_padding(GTK_ALIGNMENT(location_entry_alignment_),
                              0, 0, 0, 0);
    gtk_alignment_set_padding(GTK_ALIGNMENT(tab_to_search_alignment_),
                              1, 1, 1, 0);
    gtk_alignment_set_padding(GTK_ALIGNMENT(site_type_alignment_),
                              1, 1, 1, 0);
  } else {
    gtk_widget_modify_bg(tab_to_search_box_, GTK_STATE_NORMAL,
                         &kKeywordBackgroundColor);
    gtk_util::SetRoundedWindowBorderColor(tab_to_search_box_,
                                          kKeywordBorderColor);

    gtk_util::SetLabelColor(tab_to_search_full_label_, &gtk_util::kGdkBlack);
    gtk_util::SetLabelColor(tab_to_search_partial_label_, &gtk_util::kGdkBlack);
    gtk_util::SetLabelColor(tab_to_search_hint_leading_label_,
                            &kHintTextColor);
    gtk_util::SetLabelColor(tab_to_search_hint_trailing_label_,
                            &kHintTextColor);

    // Until we switch to vector graphics, force the font size of labels.
    // 12.1px = 9pt @ 96dpi
    gtk_util::ForceFontSizePixels(security_info_label_, 12.1);
    gtk_util::ForceFontSizePixels(tab_to_search_full_label_,
        browser_defaults::kAutocompleteEditFontPixelSize);
    gtk_util::ForceFontSizePixels(tab_to_search_partial_label_,
        browser_defaults::kAutocompleteEditFontPixelSize);
    gtk_util::ForceFontSizePixels(tab_to_search_hint_leading_label_,
        browser_defaults::kAutocompleteEditFontPixelSize);
    gtk_util::ForceFontSizePixels(tab_to_search_hint_trailing_label_,
        browser_defaults::kAutocompleteEditFontPixelSize);

    const int top_bottom = popup_window_mode_ ? kBorderThickness : 0;
    gtk_alignment_set_padding(GTK_ALIGNMENT(location_entry_alignment_),
                              kTopMargin + kBorderThickness,
                              kBottomMargin + kBorderThickness,
                              top_bottom, top_bottom);
    gtk_alignment_set_padding(GTK_ALIGNMENT(tab_to_search_alignment_),
                              1, 1, 0, 0);
    gtk_alignment_set_padding(GTK_ALIGNMENT(site_type_alignment_),
                              1, 1, 0, 0);
  }

  UpdateStarIcon();
  UpdateSiteTypeArea();
  UpdateContentSettingsIcons();
}

gboolean LocationBarViewGtk::HandleExpose(GtkWidget* widget,
                                          GdkEventExpose* event) {
  // If we're not using GTK theming, draw our own border over the edge pixels
  // of the background.
  if (!profile_ ||
      !GtkThemeService::GetFrom(profile_)->UseGtkTheme()) {
    int left, center, right;
    if (popup_window_mode_) {
      left = right = IDR_LOCATIONBG_POPUPMODE_EDGE;
      center = IDR_LOCATIONBG_POPUPMODE_CENTER;
    } else {
      left = IDR_LOCATIONBG_L;
      center = IDR_LOCATIONBG_C;
      right = IDR_LOCATIONBG_R;
    }

    NineBox background(left, center, right,
                       0, 0, 0, 0, 0, 0);
    background.RenderToWidget(widget);
  }

  return FALSE;  // Continue propagating the expose.
}

void LocationBarViewGtk::UpdateSiteTypeArea() {
  // The icon is always visible except when the |tab_to_search_alignment_| is
  // visible.
  if (!location_entry_->model()->keyword().empty() &&
      !location_entry_->model()->is_keyword_hint()) {
    gtk_widget_hide(site_type_area());
    return;
  }

  int resource_id = location_entry_->GetIcon();
  gtk_image_set_from_pixbuf(GTK_IMAGE(location_icon_image_),
                            theme_service_->GetPixbufNamed(resource_id));

  if (toolbar_model_->GetSecurityLevel() == ToolbarModel::EV_SECURE) {
    if (!gtk_util::IsActingAsRoundedWindow(site_type_event_box_)) {
      // Fun fact: If wee try to make |site_type_event_box_| act as a
      // rounded window while it doesn't have a visible window, GTK interprets
      // this as a sign that it should paint the skyline texture into the
      // omnibox.
      gtk_event_box_set_visible_window(GTK_EVENT_BOX(site_type_event_box_),
                                       TRUE);

      gtk_util::ActAsRoundedWindow(site_type_event_box_,
                                   kEvSecureBorderColor,
                                   kCornerSize,
                                   gtk_util::ROUNDED_ALL,
                                   gtk_util::BORDER_ALL);
    }

    std::wstring info_text = toolbar_model_->GetEVCertName();
    gtk_label_set_text(GTK_LABEL(security_info_label_),
                       WideToUTF8(info_text).c_str());

    UpdateEVCertificateLabelSize();

    gtk_widget_show(GTK_WIDGET(security_info_label_));
  } else {
    if (gtk_util::IsActingAsRoundedWindow(site_type_event_box_)) {
      gtk_util::StopActingAsRoundedWindow(site_type_event_box_);

      gtk_event_box_set_visible_window(GTK_EVENT_BOX(site_type_event_box_),
                                       FALSE);
    }

    gtk_widget_hide(GTK_WIDGET(security_info_label_));
  }

  if (location_entry()->IsEditingOrEmpty()) {
    // Do not show the tooltip if the user has been editing the location
    // bar, or the location bar is at the NTP.
    gtk_widget_set_tooltip_text(location_icon_image_, "");
  } else {
    gtk_widget_set_tooltip_text(location_icon_image_,
        l10n_util::GetStringUTF8(IDS_TOOLTIP_LOCATION_ICON).c_str());
  }

  gtk_widget_show(site_type_area());

  SetSiteTypeDragSource();
}

void LocationBarViewGtk::UpdateEVCertificateLabelSize() {
  // Figure out the width of the average character.
  PangoLayout* layout = gtk_label_get_layout(GTK_LABEL(security_info_label_));
  PangoContext* context = pango_layout_get_context(layout);
  PangoFontMetrics* metrics = pango_context_get_metrics(
      context,
      gtk_widget_get_style(security_info_label_)->font_desc,
      pango_context_get_language(context));
  int char_width =
      pango_font_metrics_get_approximate_char_width(metrics) / PANGO_SCALE;

  // The EV label should never take up more than half the hbox. We try to
  // correct our inaccurate measurement units ("the average character width")
  // by dividing more than an even 2.
  int text_area = security_info_label_->allocation.width +
                  entry_box_->allocation.width;
  int max_chars = static_cast<int>(static_cast<float>(text_area) /
                                   static_cast<float>(char_width) / 2.75);
  // Don't let the label be smaller than 10 characters so that the country
  // code is always visible.
  gtk_label_set_max_width_chars(GTK_LABEL(security_info_label_),
                                std::max(10, max_chars));

  pango_font_metrics_unref(metrics);
}

void LocationBarViewGtk::SetKeywordLabel(const string16& keyword) {
  if (keyword.empty())
    return;

  DCHECK(profile_);
  if (!profile_->GetTemplateURLModel())
    return;

  bool is_extension_keyword;
  const string16 short_name = profile_->GetTemplateURLModel()->
      GetKeywordShortName(keyword, &is_extension_keyword);
  int message_id = is_extension_keyword ?
      IDS_OMNIBOX_EXTENSION_KEYWORD_TEXT : IDS_OMNIBOX_KEYWORD_TEXT;
  string16 full_name = l10n_util::GetStringFUTF16(message_id,
                                                  short_name);
  string16 partial_name = l10n_util::GetStringFUTF16(
      message_id,
      WideToUTF16Hack(
          location_bar_util::CalculateMinString(UTF16ToWideHack(short_name))));
  gtk_label_set_text(GTK_LABEL(tab_to_search_full_label_),
                     UTF16ToUTF8(full_name).c_str());
  gtk_label_set_text(GTK_LABEL(tab_to_search_partial_label_),
                     UTF16ToUTF8(partial_name).c_str());

  if (last_keyword_ != keyword) {
    last_keyword_ = keyword;

    if (is_extension_keyword) {
      const TemplateURL* template_url =
          profile_->GetTemplateURLModel()->GetTemplateURLForKeyword(keyword);
      const SkBitmap& bitmap = profile_->GetExtensionService()->
          GetOmniboxIcon(template_url->GetExtensionId());
      GdkPixbuf* pixbuf = gfx::GdkPixbufFromSkBitmap(&bitmap);
      gtk_image_set_from_pixbuf(GTK_IMAGE(tab_to_search_magnifier_), pixbuf);
      g_object_unref(pixbuf);
    } else {
      ResourceBundle& rb = ResourceBundle::GetSharedInstance();
      gtk_image_set_from_pixbuf(GTK_IMAGE(tab_to_search_magnifier_),
                                rb.GetPixbufNamed(IDR_OMNIBOX_SEARCH));
    }
  }
}

void LocationBarViewGtk::SetKeywordHintLabel(const string16& keyword) {
  if (keyword.empty())
    return;

  DCHECK(profile_);
  if (!profile_->GetTemplateURLModel())
    return;

  bool is_extension_keyword;
  const string16 short_name = profile_->GetTemplateURLModel()->
      GetKeywordShortName(keyword, &is_extension_keyword);
  int message_id = is_extension_keyword ?
      IDS_OMNIBOX_EXTENSION_KEYWORD_HINT : IDS_OMNIBOX_KEYWORD_HINT;
  std::vector<size_t> content_param_offsets;
  const string16 keyword_hint = l10n_util::GetStringFUTF16(
      message_id,
      string16(),
      short_name,
      &content_param_offsets);
  if (content_param_offsets.size() != 2) {
    // See comments on an identical NOTREACHED() in search_provider.cc.
    NOTREACHED();
    return;
  }

  std::string leading(UTF16ToUTF8(
      keyword_hint.substr(0, content_param_offsets.front())));
  std::string trailing(UTF16ToUTF8(
      keyword_hint.substr(content_param_offsets.front())));
  gtk_label_set_text(GTK_LABEL(tab_to_search_hint_leading_label_),
                     leading.c_str());
  gtk_label_set_text(GTK_LABEL(tab_to_search_hint_trailing_label_),
                     trailing.c_str());
}

void LocationBarViewGtk::ShowFirstRunBubbleInternal(
    FirstRun::BubbleType bubble_type) {
  if (!location_entry_.get() || !widget()->window)
    return;

  gfx::Rect bounds = gtk_util::WidgetBounds(location_icon_image_);
  bounds.set_x(bounds.x() + kFirstRunBubbleLeftSpacing);

  FirstRunBubble::Show(profile_, location_icon_image_, bounds, bubble_type);
}

gboolean LocationBarViewGtk::OnIconReleased(GtkWidget* sender,
                                            GdkEventButton* event) {
  TabContents* tab = GetTabContents();

  if (event->button == 1) {
    // Do not show page info if the user has been editing the location
    // bar, or the location bar is at the NTP.
    if (location_entry()->IsEditingOrEmpty())
      return FALSE;

    // (0,0) event coordinates indicates that the release came at the end of
    // a drag.
    if (event->x == 0 && event->y == 0)
      return FALSE;

    NavigationEntry* nav_entry = tab->controller().GetActiveEntry();
    if (!nav_entry) {
      NOTREACHED();
      return FALSE;
    }
    tab->ShowPageInfo(nav_entry->url(), nav_entry->ssl(), true);
    return TRUE;
  } else if (event->button == 2) {
    // When the user middle clicks on the location icon, try to open the
    // contents of the PRIMARY selection in the current tab.
    // If the click was outside our bounds, do nothing.
    if (!gtk_util::WidgetBounds(sender).Contains(
            gfx::Point(event->x, event->y))) {
      return FALSE;
    }

    GURL url;
    if (!gtk_util::URLFromPrimarySelection(profile_, &url))
      return FALSE;

    tab->OpenURL(url, GURL(), CURRENT_TAB, PageTransition::TYPED);
    return TRUE;
  }

  return FALSE;
}

void LocationBarViewGtk::OnIconDragData(GtkWidget* sender,
                                        GdkDragContext* context,
                                        GtkSelectionData* data,
                                        guint info, guint time) {
  TabContents* tab = GetTabContents();
  if (!tab)
    return;
  ui::WriteURLWithName(data, tab->GetURL(), tab->GetTitle(), info);
}

void LocationBarViewGtk::OnIconDragBegin(GtkWidget* sender,
                                         GdkDragContext* context) {
  SkBitmap favicon = GetFavicon();
  GdkPixbuf* pixbuf = gfx::GdkPixbufFromSkBitmap(&favicon);
  if (!pixbuf)
    return;
  drag_icon_ = bookmark_utils::GetDragRepresentation(pixbuf,
      GetTitle(), theme_service_);
  g_object_unref(pixbuf);
  gtk_drag_set_icon_widget(context, drag_icon_, 0, 0);
}

void LocationBarViewGtk::OnIconDragEnd(GtkWidget* sender,
                                       GdkDragContext* context) {
  DCHECK(drag_icon_);
  gtk_widget_destroy(drag_icon_);
  drag_icon_ = NULL;
}

void LocationBarViewGtk::OnHboxSizeAllocate(GtkWidget* sender,
                                            GtkAllocation* allocation) {
  if (hbox_width_ != allocation->width) {
    hbox_width_ = allocation->width;
    UpdateEVCertificateLabelSize();
  }
}

void LocationBarViewGtk::OnEntryBoxSizeAllocate(GtkWidget* sender,
                                                GtkAllocation* allocation) {
  if (entry_box_width_ != allocation->width) {
    entry_box_width_ = allocation->width;
    AdjustChildrenVisibility();
  }
}

gboolean LocationBarViewGtk::OnStarButtonPress(GtkWidget* widget,
                                               GdkEventButton* event) {
  browser_->ExecuteCommand(IDC_BOOKMARK_PAGE);
  return FALSE;
}

void LocationBarViewGtk::ShowStarBubble(const GURL& url,
                                        bool newly_bookmarked) {
  if (!star_.get())
    return;

  BookmarkBubbleGtk::Show(star_.get(), profile_, url, newly_bookmarked);
}

void LocationBarViewGtk::SetStarred(bool starred) {
  if (starred == starred_)
    return;

  starred_ = starred;
  UpdateStarIcon();
}

void LocationBarViewGtk::UpdateStarIcon() {
  if (!star_.get())
    return;
  bool star_enabled = !toolbar_model_->input_in_progress() &&
                      edit_bookmarks_enabled_.GetValue();
  command_updater_->UpdateCommandEnabled(IDC_BOOKMARK_PAGE, star_enabled);
  if (star_enabled) {
    gtk_widget_show_all(star_.get());
    gtk_image_set_from_pixbuf(GTK_IMAGE(star_image_),
        theme_service_->GetPixbufNamed(
            starred_ ? IDR_STAR_LIT : IDR_STAR));
  } else {
    gtk_widget_hide_all(star_.get());
  }
}

bool LocationBarViewGtk::ShouldOnlyShowLocation() {
  return browser_->type() != Browser::TYPE_NORMAL;
}

void LocationBarViewGtk::AdjustChildrenVisibility() {
  int text_width = location_entry_->TextWidth();
  int available_width = entry_box_width_ - text_width - kInnerPadding;

  // Only one of |tab_to_search_alignment_| and |tab_to_search_hint_| can be
  // visible at the same time.
  if (!show_selected_keyword_ && GTK_WIDGET_VISIBLE(tab_to_search_alignment_))
    gtk_widget_hide(tab_to_search_alignment_);
  else if (!show_keyword_hint_ && GTK_WIDGET_VISIBLE(tab_to_search_hint_))
    gtk_widget_hide(tab_to_search_hint_);

  if (show_selected_keyword_) {
    GtkRequisition box, full_label, partial_label;
    gtk_widget_size_request(tab_to_search_box_, &box);
    gtk_widget_size_request(tab_to_search_full_label_, &full_label);
    gtk_widget_size_request(tab_to_search_partial_label_, &partial_label);
    int full_partial_width_diff = full_label.width - partial_label.width;
    int full_box_width;
    int partial_box_width;
    if (GTK_WIDGET_VISIBLE(tab_to_search_full_label_)) {
      full_box_width = box.width;
      partial_box_width = full_box_width - full_partial_width_diff;
    } else {
      partial_box_width = box.width;
      full_box_width = partial_box_width + full_partial_width_diff;
    }

    if (partial_box_width >= entry_box_width_ - kInnerPadding) {
      gtk_widget_hide(tab_to_search_alignment_);
    } else if (full_box_width >= available_width) {
      gtk_widget_hide(tab_to_search_full_label_);
      gtk_widget_show(tab_to_search_partial_label_);
      gtk_widget_show(tab_to_search_alignment_);
    } else if (full_box_width < available_width) {
      gtk_widget_hide(tab_to_search_partial_label_);
      gtk_widget_show(tab_to_search_full_label_);
      gtk_widget_show(tab_to_search_alignment_);
    }
  } else if (show_keyword_hint_) {
    GtkRequisition leading, icon, trailing;
    gtk_widget_size_request(tab_to_search_hint_leading_label_, &leading);
    gtk_widget_size_request(tab_to_search_hint_icon_, &icon);
    gtk_widget_size_request(tab_to_search_hint_trailing_label_, &trailing);
    int full_width = leading.width + icon.width + trailing.width;

    if (icon.width >= entry_box_width_ - kInnerPadding) {
      gtk_widget_hide(tab_to_search_hint_);
    } else if (full_width >= available_width) {
      gtk_widget_hide(tab_to_search_hint_leading_label_);
      gtk_widget_hide(tab_to_search_hint_trailing_label_);
      gtk_widget_show(tab_to_search_hint_);
    } else if (full_width < available_width) {
      gtk_widget_show(tab_to_search_hint_leading_label_);
      gtk_widget_show(tab_to_search_hint_trailing_label_);
      gtk_widget_show(tab_to_search_hint_);
    }
  }
}

////////////////////////////////////////////////////////////////////////////////
// LocationBarViewGtk::ContentSettingImageViewGtk
LocationBarViewGtk::ContentSettingImageViewGtk::ContentSettingImageViewGtk(
    ContentSettingsType content_type,
    const LocationBarViewGtk* parent,
    Profile* profile)
    : content_setting_image_model_(
          ContentSettingImageModel::CreateContentSettingImageModel(
              content_type)),
      alignment_(gtk_alignment_new(0, 0, 1, 1)),
      event_box_(gtk_event_box_new()),
      hbox_(gtk_hbox_new(FALSE, kInnerPadding)),
      image_(gtk_image_new()),
      label_(gtk_label_new(NULL)),
      parent_(parent),
      profile_(profile),
      info_bubble_(NULL),
      animation_(this),
      method_factory_(this) {
  gtk_alignment_set_padding(GTK_ALIGNMENT(alignment_.get()), 1, 1, 0, 0);
  gtk_container_add(GTK_CONTAINER(alignment_.get()), event_box_.get());

  // Make the event box not visible so it does not paint a background.
  gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_.get()), FALSE);
  g_signal_connect(event_box_.get(), "button-press-event",
                   G_CALLBACK(&OnButtonPressedThunk), this);
  g_signal_connect(event_box_.get(), "expose-event",
                   G_CALLBACK(&OnExposeThunk), this);

  gtk_widget_set_no_show_all(label_.get(), TRUE);
  gtk_label_set_line_wrap(GTK_LABEL(label_.get()), FALSE);

  gtk_box_pack_start(GTK_BOX(hbox_), image_.get(), FALSE, FALSE, 0);
  gtk_box_pack_start(GTK_BOX(hbox_), label_.get(), FALSE, FALSE, 0);

  // The +1 accounts for the pixel that is devoted to drawing the border.
  gtk_container_set_border_width(GTK_CONTAINER(hbox_), kHboxBorder + 1);

  gtk_container_add(GTK_CONTAINER(event_box_.get()), hbox_);
  gtk_widget_hide(widget());

  animation_.SetSlideDuration(kContentSettingImageAnimationTime);
}

LocationBarViewGtk::ContentSettingImageViewGtk::~ContentSettingImageViewGtk() {
  image_.Destroy();
  label_.Destroy();
  event_box_.Destroy();
  alignment_.Destroy();

  if (info_bubble_)
    info_bubble_->Close();
}

void LocationBarViewGtk::ContentSettingImageViewGtk::UpdateFromTabContents(
    TabContents* tab_contents) {
  content_setting_image_model_->UpdateFromTabContents(tab_contents);
  if (!content_setting_image_model_->is_visible()) {
    gtk_widget_hide(widget());
    return;
  }

  gtk_image_set_from_pixbuf(GTK_IMAGE(image_.get()),
      GtkThemeService::GetFrom(profile_)->GetPixbufNamed(
          content_setting_image_model_->get_icon()));

  gtk_widget_set_tooltip_text(widget(),
      content_setting_image_model_->get_tooltip().c_str());
  gtk_widget_show_all(widget());

  TabSpecificContentSettings* content_settings = tab_contents ?
      tab_contents->GetTabSpecificContentSettings() : NULL;
  if (!content_settings || content_settings->IsBlockageIndicated(
      content_setting_image_model_->get_content_settings_type()))
    return;

  // The content blockage was not yet indicated to the user. Start indication
  // animation and clear "not yet shown" flag.
  content_settings->SetBlockageHasBeenIndicated(
      content_setting_image_model_->get_content_settings_type());

  int label_string_id =
      content_setting_image_model_->explanatory_string_id();
  // Check if the animation is enabled and if the string for animation is
  // available. If there's no string for the content type, we don't animate.
  if (CommandLine::ForCurrentProcess()->HasSwitch(
      switches::kDisableBlockContentAnimation) || !label_string_id)
    return;

  gtk_label_set_text(GTK_LABEL(label_.get()),
      l10n_util::GetStringUTF8(label_string_id).c_str());
  StartAnimating();
}

void LocationBarViewGtk::ContentSettingImageViewGtk::StartAnimating() {
  if (animation_.IsShowing() || animation_.IsClosing())
    return;

  gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_.get()), TRUE);
  gtk_util::ActAsRoundedWindow(event_box_.get(), kContentSettingBorderColor,
                               kCornerSize,
                               gtk_util::ROUNDED_ALL, gtk_util::BORDER_ALL);

  gtk_widget_set_size_request(label_.get(), -1, -1);
  gtk_widget_size_request(label_.get(), &label_req_);
  gtk_widget_set_size_request(label_.get(), 0, -1);
  gtk_widget_show(label_.get());

  animation_.Show();
}

void LocationBarViewGtk::ContentSettingImageViewGtk::CloseAnimation() {
  animation_.Hide();
}

void LocationBarViewGtk::ContentSettingImageViewGtk::AnimationProgressed(
    const ui::Animation* animation) {
  gtk_widget_set_size_request(
      label_.get(),
      animation->GetCurrentValue() * label_req_.width,
      -1);
}

void LocationBarViewGtk::ContentSettingImageViewGtk::AnimationEnded(
    const ui::Animation* animation) {
  if (animation_.IsShowing()) {
    MessageLoop::current()->PostDelayedTask(FROM_HERE,
        method_factory_.NewRunnableMethod(
            &ContentSettingImageViewGtk::CloseAnimation),
        kContentSettingImageDisplayTime);
  } else {
    gtk_widget_hide(label_.get());
    gtk_util::StopActingAsRoundedWindow(event_box_.get());
    gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_.get()), FALSE);
  }
}

void LocationBarViewGtk::ContentSettingImageViewGtk::AnimationCanceled(
    const ui::Animation* animation) {
}

gboolean LocationBarViewGtk::ContentSettingImageViewGtk::OnButtonPressed(
    GtkWidget* sender, GdkEvent* event) {
  TabContents* tab_contents = parent_->GetTabContents();
  if (!tab_contents)
    return TRUE;
  const ContentSettingsType content_settings_type =
      content_setting_image_model_->get_content_settings_type();
  if (content_settings_type == CONTENT_SETTINGS_TYPE_PRERENDER)
    return TRUE;
  GURL url = tab_contents->GetURL();
  std::wstring display_host;
  net::AppendFormattedHost(url,
      UTF8ToWide(profile_->GetPrefs()->GetString(prefs::kAcceptLanguages)),
      &display_host,
      NULL, NULL);

  info_bubble_ = new ContentSettingBubbleGtk(
      sender, this,
      ContentSettingBubbleModel::CreateContentSettingBubbleModel(
          tab_contents, profile_, content_settings_type),
      profile_, tab_contents);
  return TRUE;
}

gboolean LocationBarViewGtk::ContentSettingImageViewGtk::OnExpose(
    GtkWidget* sender, GdkEventExpose* event) {
  if (!(animation_.IsShowing() || animation_.IsClosing()))
    return FALSE;

  const int height = sender->allocation.height;

  cairo_t* cr = gdk_cairo_create(GDK_DRAWABLE(sender->window));
  gdk_cairo_rectangle(cr, &event->area);
  cairo_clip(cr);

  cairo_pattern_t* pattern = cairo_pattern_create_linear(0, 0, 0, height);

  cairo_pattern_add_color_stop_rgb(pattern, 0.0,
                                   kContentSettingTopColor[0],
                                   kContentSettingTopColor[1],
                                   kContentSettingTopColor[2]);
  cairo_pattern_add_color_stop_rgb(pattern, 1.0,
                                   kContentSettingBottomColor[0],
                                   kContentSettingBottomColor[1],
                                   kContentSettingBottomColor[2]);
  cairo_set_source(cr, pattern);
  cairo_paint(cr);
  cairo_pattern_destroy(pattern);
  cairo_destroy(cr);

  return FALSE;
}

void LocationBarViewGtk::ContentSettingImageViewGtk::InfoBubbleClosing(
    InfoBubbleGtk* info_bubble,
    bool closed_by_escape) {
  info_bubble_ = NULL;
}

////////////////////////////////////////////////////////////////////////////////
// LocationBarViewGtk::PageActionViewGtk

LocationBarViewGtk::PageActionViewGtk::PageActionViewGtk(
    LocationBarViewGtk* owner, Profile* profile,
    ExtensionAction* page_action)
    : owner_(NULL),
      profile_(profile),
      page_action_(page_action),
      last_icon_pixbuf_(NULL),
      tracker_(this),
      preview_enabled_(false) {
  event_box_.Own(gtk_event_box_new());
  gtk_widget_set_size_request(event_box_.get(),
                              Extension::kPageActionIconMaxSize,
                              Extension::kPageActionIconMaxSize);

  // Make the event box not visible so it does not paint a background.
  gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_.get()), FALSE);
  g_signal_connect(event_box_.get(), "button-press-event",
                   G_CALLBACK(&OnButtonPressedThunk), this);
  g_signal_connect_after(event_box_.get(), "expose-event",
                         G_CALLBACK(OnExposeEventThunk), this);

  image_.Own(gtk_image_new());
  gtk_container_add(GTK_CONTAINER(event_box_.get()), image_.get());

  const Extension* extension = profile->GetExtensionService()->
      GetExtensionById(page_action->extension_id(), false);
  DCHECK(extension);

  // Load all the icons declared in the manifest. This is the contents of the
  // icons array, plus the default_icon property, if any.
  std::vector<std::string> icon_paths(*page_action->icon_paths());
  if (!page_action_->default_icon_path().empty())
    icon_paths.push_back(page_action_->default_icon_path());

  for (std::vector<std::string>::iterator iter = icon_paths.begin();
       iter != icon_paths.end(); ++iter) {
    tracker_.LoadImage(extension, extension->GetResource(*iter),
                       gfx::Size(Extension::kPageActionIconMaxSize,
                                 Extension::kPageActionIconMaxSize),
                       ImageLoadingTracker::DONT_CACHE);
  }

  // We set the owner last of all so that we can determine whether we are in
  // the process of initializing this class or not.
  owner_ = owner;
}

LocationBarViewGtk::PageActionViewGtk::~PageActionViewGtk() {
  image_.Destroy();
  event_box_.Destroy();
  for (PixbufMap::iterator iter = pixbufs_.begin(); iter != pixbufs_.end();
       ++iter) {
    g_object_unref(iter->second);
  }
  if (last_icon_pixbuf_)
    g_object_unref(last_icon_pixbuf_);
}

void LocationBarViewGtk::PageActionViewGtk::UpdateVisibility(
    TabContents* contents, const GURL& url) {
  // Save this off so we can pass it back to the extension when the action gets
  // executed. See PageActionImageView::OnMousePressed.
  current_tab_id_ = contents ? ExtensionTabUtil::GetTabId(contents) : -1;
  current_url_ = url;

  bool visible = contents &&
      (preview_enabled_ || page_action_->GetIsVisible(current_tab_id_));
  if (visible) {
    // Set the tooltip.
    gtk_widget_set_tooltip_text(event_box_.get(),
        page_action_->GetTitle(current_tab_id_).c_str());

    // Set the image.
    // It can come from three places. In descending order of priority:
    // - The developer can set it dynamically by path or bitmap. It will be in
    //   page_action_->GetIcon().
    // - The developer can set it dyanmically by index. It will be in
    //   page_action_->GetIconIndex().
    // - It can be set in the manifest by path. It will be in page_action_->
    //   default_icon_path().

    // First look for a dynamically set bitmap.
    SkBitmap icon = page_action_->GetIcon(current_tab_id_);
    GdkPixbuf* pixbuf = NULL;
    if (!icon.isNull()) {
      if (icon.pixelRef() != last_icon_skbitmap_.pixelRef()) {
        if (last_icon_pixbuf_)
          g_object_unref(last_icon_pixbuf_);
        last_icon_skbitmap_ = icon;
        last_icon_pixbuf_ = gfx::GdkPixbufFromSkBitmap(&icon);
      }
      DCHECK(last_icon_pixbuf_);
      pixbuf = last_icon_pixbuf_;
    } else {
      // Otherwise look for a dynamically set index, or fall back to the
      // default path.
      int icon_index = page_action_->GetIconIndex(current_tab_id_);
      std::string icon_path = (icon_index < 0) ?
          page_action_->default_icon_path() :
          page_action_->icon_paths()->at(icon_index);
      if (!icon_path.empty()) {
        PixbufMap::iterator iter = pixbufs_.find(icon_path);
        if (iter != pixbufs_.end())
          pixbuf = iter->second;
      }
    }
    // The pixbuf might not be loaded yet.
    if (pixbuf)
      gtk_image_set_from_pixbuf(GTK_IMAGE(image_.get()), pixbuf);
  }

  bool old_visible = IsVisible();
  if (visible)
    gtk_widget_show_all(event_box_.get());
  else
    gtk_widget_hide_all(event_box_.get());

  if (visible != old_visible) {
    NotificationService::current()->Notify(
        NotificationType::EXTENSION_PAGE_ACTION_VISIBILITY_CHANGED,
        Source<ExtensionAction>(page_action_),
        Details<TabContents>(contents));
  }
}

void LocationBarViewGtk::PageActionViewGtk::OnImageLoaded(
    SkBitmap* image, const ExtensionResource& resource, int index) {
  // We loaded icons()->size() icons, plus one extra if the page action had
  // a default icon.
  int total_icons = static_cast<int>(page_action_->icon_paths()->size());
  if (!page_action_->default_icon_path().empty())
    total_icons++;
  DCHECK(index < total_icons);

  // Map the index of the loaded image back to its name. If we ever get an
  // index greater than the number of icons, it must be the default icon.
  if (image) {
    GdkPixbuf* pixbuf = gfx::GdkPixbufFromSkBitmap(image);
    if (index < static_cast<int>(page_action_->icon_paths()->size()))
      pixbufs_[page_action_->icon_paths()->at(index)] = pixbuf;
    else
      pixbufs_[page_action_->default_icon_path()] = pixbuf;
  }

  // If we have no owner, that means this class is still being constructed and
  // we should not UpdatePageActions, since it leads to the PageActions being
  // destroyed again and new ones recreated (causing an infinite loop).
  if (owner_)
    owner_->UpdatePageActions();
}

void LocationBarViewGtk::PageActionViewGtk::TestActivatePageAction() {
  GdkEventButton event = {};
  event.button = 1;
  OnButtonPressed(widget(), &event);
}

void LocationBarViewGtk::PageActionViewGtk::InspectPopup(
    ExtensionAction* action) {
  ShowPopup(true);
}

bool LocationBarViewGtk::PageActionViewGtk::ShowPopup(bool devtools) {
  if (!page_action_->HasPopup(current_tab_id_))
    return false;

  ExtensionPopupGtk::Show(
      page_action_->GetPopupUrl(current_tab_id_),
      owner_->browser_,
      event_box_.get(),
      devtools);
  return true;
}

gboolean LocationBarViewGtk::PageActionViewGtk::OnButtonPressed(
    GtkWidget* sender,
    GdkEventButton* event) {
  if (event->button != 3) {
    if (!ShowPopup(false)) {
      ExtensionService* service = profile_->GetExtensionService();
      service->browser_event_router()->PageActionExecuted(
          profile_,
          page_action_->extension_id(),
          page_action_->id(),
          current_tab_id_,
          current_url_.spec(),
          event->button);
    }
  } else {
    const Extension* extension = profile_->GetExtensionService()->
        GetExtensionById(page_action()->extension_id(), false);

    if (extension->ShowConfigureContextMenus()) {
      context_menu_model_ =
          new ExtensionContextMenuModel(extension, owner_->browser_, this);
      context_menu_.reset(
          new MenuGtk(NULL, context_menu_model_.get()));
      context_menu_->PopupForWidget(sender, event->button, event->time);
    }
  }

  return TRUE;
}

gboolean LocationBarViewGtk::PageActionViewGtk::OnExposeEvent(
    GtkWidget* widget, GdkEventExpose* event) {
  TabContents* contents = owner_->GetTabContents();
  if (!contents)
    return FALSE;

  int tab_id = ExtensionTabUtil::GetTabId(contents);
  if (tab_id < 0)
    return FALSE;

  std::string badge_text = page_action_->GetBadgeText(tab_id);
  if (badge_text.empty())
    return FALSE;

  gfx::CanvasSkiaPaint canvas(event, false);
  gfx::Rect bounding_rect(widget->allocation);
  page_action_->PaintBadge(&canvas, bounding_rect, tab_id);
  return FALSE;
}
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