chromium/chrome/browser/gtk/browser_window_gtk.cc

// Copyright (c) 2009 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/gtk/browser_window_gtk.h"

#include <gdk/gdkkeysyms.h>
#include <X11/XF86keysym.h>

#include "app/resource_bundle.h"
#include "app/theme_provider.h"
#include "base/base_paths_linux.h"
#include "base/command_line.h"
#include "base/gfx/gtk_util.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/path_service.h"
#include "base/string_util.h"
#include "base/time.h"
#include "chrome/app/chrome_dll_resource.h"
#include "chrome/browser/bookmarks/bookmark_utils.h"
#include "chrome/browser/browser.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/browser_theme_provider.h"
#include "chrome/browser/download/download_item_model.h"
#include "chrome/browser/download/download_manager.h"
#include "chrome/browser/gtk/about_chrome_dialog.h"
#include "chrome/browser/gtk/bookmark_bar_gtk.h"
#include "chrome/browser/gtk/bookmark_manager_gtk.h"
#include "chrome/browser/gtk/browser_titlebar.h"
#include "chrome/browser/gtk/browser_toolbar_gtk.h"
#include "chrome/browser/gtk/clear_browsing_data_dialog_gtk.h"
#include "chrome/browser/gtk/download_shelf_gtk.h"
#include "chrome/browser/gtk/edit_search_engine_dialog.h"
#include "chrome/browser/gtk/find_bar_gtk.h"
#include "chrome/browser/gtk/go_button_gtk.h"
#include "chrome/browser/gtk/gtk_theme_provider.h"
#include "chrome/browser/gtk/import_dialog_gtk.h"
#include "chrome/browser/gtk/infobar_container_gtk.h"
#include "chrome/browser/gtk/keyword_editor_view.h"
#include "chrome/browser/gtk/nine_box.h"
#include "chrome/browser/gtk/status_bubble_gtk.h"
#include "chrome/browser/gtk/tab_contents_container_gtk.h"
#include "chrome/browser/gtk/tabs/tab_strip_gtk.h"
#include "chrome/browser/gtk/task_manager_gtk.h"
#include "chrome/browser/gtk/toolbar_star_toggle_gtk.h"
#include "chrome/browser/location_bar.h"
#include "chrome/browser/renderer_host/render_widget_host_view_gtk.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/tab_contents/tab_contents_view.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/pref_service.h"
#include "grit/app_resources.h"
#include "grit/theme_resources.h"

#if defined(OS_CHROMEOS)
#include "chrome/browser/views/panel_controller.h"
#include "chrome/browser/views/tabs/tab_overview_types.h"
#endif

namespace {

// The number of milliseconds between loading animation frames.
const int kLoadingAnimationFrameTimeMs = 30;

const char* kBrowserWindowKey = "__BROWSER_WINDOW_GTK__";

// The frame border is only visible in restored mode and is hardcoded to 4 px
// on each side regardless of the system window border size.
const int kFrameBorderThickness = 4;
// While resize areas on Windows are normally the same size as the window
// borders, our top area is shrunk by 1 px to make it easier to move the window
// around with our thinner top grabbable strip.  (Incidentally, our side and
// bottom resize areas don't match the frame border thickness either -- they
// span the whole nonclient area, so there's no "dead zone" for the mouse.)
const int kTopResizeAdjust = 1;
// In the window corners, the resize areas don't actually expand bigger, but
// the 16 px at the end of each edge triggers diagonal resizing.
const int kResizeAreaCornerSize = 16;

gboolean MainWindowConfigured(GtkWindow* window, GdkEventConfigure* event,
                              BrowserWindowGtk* browser_win) {
  gfx::Rect bounds = gfx::Rect(event->x, event->y, event->width, event->height);
  browser_win->OnBoundsChanged(bounds);
  return FALSE;
}

gboolean MainWindowStateChanged(GtkWindow* window, GdkEventWindowState* event,
                                BrowserWindowGtk* browser_win) {
  browser_win->OnStateChanged(event->new_window_state);
  return FALSE;
}

// Callback for the delete event.  This event is fired when the user tries to
// close the window (e.g., clicking on the X in the window manager title bar).
gboolean MainWindowDeleteEvent(GtkWidget* widget, GdkEvent* event,
                               BrowserWindowGtk* window) {
  window->Close();

  // Return true to prevent the gtk window from being destroyed.  Close will
  // destroy it for us.
  return TRUE;
}

void MainWindowDestroy(GtkWidget* widget, BrowserWindowGtk* window) {
  // BUG 8712. When we gtk_widget_destroy() in Close(), this will emit the
  // signal right away, and we will be here (while Close() is still in the
  // call stack).  In order to not reenter Close(), and to also follow the
  // expectations of BrowserList, we should run the BrowserWindowGtk destructor
  // not now, but after the run loop goes back to process messages.  Otherwise
  // we will remove ourself from BrowserList while it's being iterated.
  // Additionally, now that we know the window is gone, we need to make sure to
  // set window_ to NULL, otherwise we will try to close the window again when
  // we call Close() in the destructor.
  //
  // We don't want to use DeleteSoon() here since it won't work on a nested pump
  // (like in UI tests).
  MessageLoop::current()->PostTask(FROM_HERE,
                                   new DeleteTask<BrowserWindowGtk>(window));
}

// Using gtk_window_get_position/size creates a race condition, so only use
// this to get the initial bounds.  After window creation, we pick up the
// normal bounds by connecting to the configure-event signal.
gfx::Rect GetInitialWindowBounds(GtkWindow* window) {
  gint x, y, width, height;
  gtk_window_get_position(window, &x, &y);
  gtk_window_get_size(window, &width, &height);
  return gfx::Rect(x, y, width, height);
}

const struct AcceleratorMapping {
  guint keyval;
  int command_id;
  GdkModifierType modifier_type;
} kAcceleratorMap[] = {
  // Focus.
  { GDK_k, IDC_FOCUS_SEARCH, GDK_CONTROL_MASK },
  { XF86XK_Search, IDC_FOCUS_SEARCH, GdkModifierType(0) },
  { GDK_l, IDC_FOCUS_LOCATION, GDK_CONTROL_MASK },
  { GDK_d, IDC_FOCUS_LOCATION, GDK_MOD1_MASK },
  { GDK_F6, IDC_FOCUS_LOCATION, GdkModifierType(0) },
  { XF86XK_OpenURL, IDC_FOCUS_LOCATION, GdkModifierType(0) },
  { XF86XK_Go, IDC_FOCUS_LOCATION, GdkModifierType(0) },

  // Tab/window controls.
  { GDK_Page_Down, IDC_SELECT_NEXT_TAB, GDK_CONTROL_MASK },
  { GDK_Page_Up, IDC_SELECT_PREVIOUS_TAB, GDK_CONTROL_MASK },
  { GDK_w, IDC_CLOSE_TAB, GDK_CONTROL_MASK },
  { GDK_t, IDC_RESTORE_TAB,
    GdkModifierType(GDK_CONTROL_MASK | GDK_SHIFT_MASK) },

  { GDK_1, IDC_SELECT_TAB_0, GDK_CONTROL_MASK },
  { GDK_2, IDC_SELECT_TAB_1, GDK_CONTROL_MASK },
  { GDK_3, IDC_SELECT_TAB_2, GDK_CONTROL_MASK },
  { GDK_4, IDC_SELECT_TAB_3, GDK_CONTROL_MASK },
  { GDK_5, IDC_SELECT_TAB_4, GDK_CONTROL_MASK },
  { GDK_6, IDC_SELECT_TAB_5, GDK_CONTROL_MASK },
  { GDK_7, IDC_SELECT_TAB_6, GDK_CONTROL_MASK },
  { GDK_8, IDC_SELECT_TAB_7, GDK_CONTROL_MASK },
  { GDK_9, IDC_SELECT_LAST_TAB, GDK_CONTROL_MASK },

  { GDK_1, IDC_SELECT_TAB_0, GDK_MOD1_MASK },
  { GDK_2, IDC_SELECT_TAB_1, GDK_MOD1_MASK },
  { GDK_3, IDC_SELECT_TAB_2, GDK_MOD1_MASK },
  { GDK_4, IDC_SELECT_TAB_3, GDK_MOD1_MASK },
  { GDK_5, IDC_SELECT_TAB_4, GDK_MOD1_MASK },
  { GDK_6, IDC_SELECT_TAB_5, GDK_MOD1_MASK },
  { GDK_7, IDC_SELECT_TAB_6, GDK_MOD1_MASK },
  { GDK_8, IDC_SELECT_TAB_7, GDK_MOD1_MASK },
  { GDK_9, IDC_SELECT_LAST_TAB, GDK_MOD1_MASK },

  { GDK_F4, IDC_CLOSE_TAB, GDK_CONTROL_MASK },
  { GDK_F4, IDC_CLOSE_WINDOW, GDK_MOD1_MASK },

  // Zoom level.
  { GDK_plus, IDC_ZOOM_PLUS,
    GdkModifierType(GDK_CONTROL_MASK | GDK_SHIFT_MASK) },
  { GDK_equal, IDC_ZOOM_PLUS, GDK_CONTROL_MASK },
  { XF86XK_ZoomIn, IDC_ZOOM_PLUS, GdkModifierType(0) },
  { GDK_0, IDC_ZOOM_NORMAL, GDK_CONTROL_MASK },
  { GDK_minus, IDC_ZOOM_MINUS, GDK_CONTROL_MASK },
  { GDK_underscore, IDC_ZOOM_MINUS,
    GdkModifierType(GDK_CONTROL_MASK | GDK_SHIFT_MASK) },
  { XF86XK_ZoomOut, IDC_ZOOM_MINUS, GdkModifierType(0) },

  // Find in page.
  { GDK_g, IDC_FIND_NEXT, GDK_CONTROL_MASK },
  { GDK_F3, IDC_FIND_NEXT, GdkModifierType(0) },
  { GDK_g, IDC_FIND_PREVIOUS,
    GdkModifierType(GDK_CONTROL_MASK | GDK_SHIFT_MASK) },
  { GDK_F3, IDC_FIND_PREVIOUS, GDK_SHIFT_MASK },

  // Navigation / toolbar buttons.
  { GDK_Home, IDC_HOME, GDK_MOD1_MASK },
  { XF86XK_HomePage, IDC_HOME, GdkModifierType(0) },
  { GDK_Escape, IDC_STOP, GdkModifierType(0) },
  { XF86XK_Stop, IDC_STOP, GdkModifierType(0) },
  { GDK_Left, IDC_BACK, GDK_MOD1_MASK },
  { GDK_BackSpace, IDC_BACK, GdkModifierType(0) },
  { XF86XK_Back, IDC_BACK, GdkModifierType(0) },
  { GDK_Right, IDC_FORWARD, GDK_MOD1_MASK },
  { GDK_BackSpace, IDC_FORWARD, GDK_SHIFT_MASK },
  { XF86XK_Forward, IDC_FORWARD, GdkModifierType(0) },
  { GDK_r, IDC_RELOAD, GDK_CONTROL_MASK },
  { GDK_F5, IDC_RELOAD, GdkModifierType(0) },
  { GDK_F5, IDC_RELOAD, GDK_CONTROL_MASK },
  { XF86XK_Reload, IDC_RELOAD, GdkModifierType(0) },
  { XF86XK_Refresh, IDC_RELOAD, GdkModifierType(0) },

  // Miscellany.
  { GDK_d, IDC_STAR, GDK_CONTROL_MASK },
  { XF86XK_AddFavorite, IDC_STAR, GdkModifierType(0) },
  { XF86XK_Favorites, IDC_SHOW_BOOKMARK_BAR, GdkModifierType(0) },
  { XF86XK_History, IDC_SHOW_HISTORY, GdkModifierType(0) },
  { GDK_o, IDC_OPEN_FILE, GDK_CONTROL_MASK },
  { GDK_F11, IDC_FULLSCREEN, GdkModifierType(0) },
  { GDK_u, IDC_VIEW_SOURCE, GDK_CONTROL_MASK },
  { GDK_p, IDC_PRINT, GDK_CONTROL_MASK },
  { GDK_Escape, IDC_TASK_MANAGER, GDK_SHIFT_MASK },

#if defined(OS_CHROMEOS)
  { GDK_f, IDC_FULLSCREEN,
    GdkModifierType(GDK_CONTROL_MASK | GDK_MOD1_MASK) },
  { GDK_Delete, IDC_TASK_MANAGER,
    GdkModifierType(GDK_CONTROL_MASK | GDK_MOD1_MASK) },
  { GDK_comma, IDC_CONTROL_PANEL, GdkModifierType(GDK_CONTROL_MASK) },
#endif
};

int GetCommandId(guint accel_key, GdkModifierType modifier) {
  // Bug 9806: If capslock is on, we will get a capital letter as accel_key.
  accel_key = gdk_keyval_to_lower(accel_key);
  // Filter modifier to only include accelerator modifiers.
  modifier = static_cast<GdkModifierType>(
      modifier & gtk_accelerator_get_default_mod_mask());
  for (size_t i = 0; i < arraysize(kAcceleratorMap); ++i) {
    if (kAcceleratorMap[i].keyval == accel_key &&
        kAcceleratorMap[i].modifier_type == modifier)
      return kAcceleratorMap[i].command_id;
  }
  NOTREACHED();
  return 0;
}

// An event handler for key press events.  We need to special case key
// combinations that are not valid gtk accelerators.  This function returns
// TRUE if it can handle the key press.
gboolean HandleCustomAccelerator(guint keyval, GdkModifierType modifier,
                                 Browser* browser) {
  // Filter modifier to only include accelerator modifiers.
  modifier = static_cast<GdkModifierType>(
      modifier & gtk_accelerator_get_default_mod_mask());
  switch (keyval) {
    // Gtk doesn't allow GDK_Tab or GDK_ISO_Left_Tab to be an accelerator (see
    // gtk_accelerator_valid), so we need to handle these accelerators
    // manually.
    case GDK_Tab:
      if (GDK_CONTROL_MASK == modifier) {
        browser->ExecuteCommand(IDC_SELECT_NEXT_TAB);
        return TRUE;
      }
      break;

    case GDK_ISO_Left_Tab:
      if ((GDK_CONTROL_MASK | GDK_SHIFT_MASK) == modifier) {
        browser->ExecuteCommand(IDC_SELECT_PREVIOUS_TAB);
        return TRUE;
      }
      break;

    default:
      break;
  }
  return FALSE;
}

// Handle accelerators that we don't want the native widget to be able to
// override.
gboolean PreHandleAccelerator(guint keyval, GdkModifierType modifier,
                              Browser* browser) {
  // Filter modifier to only include accelerator modifiers.
  modifier = static_cast<GdkModifierType>(
      modifier & gtk_accelerator_get_default_mod_mask());
  switch (keyval) {
    case GDK_Page_Down:
      if (GDK_CONTROL_MASK == modifier) {
        browser->ExecuteCommand(IDC_SELECT_NEXT_TAB);
        return TRUE;
      }
      break;

    case GDK_Page_Up:
      if (GDK_CONTROL_MASK == modifier) {
        browser->ExecuteCommand(IDC_SELECT_PREVIOUS_TAB);
        return TRUE;
      }
      break;

    default:
      break;
  }
  return FALSE;
}

// Let the focused widget have first crack at the key event so we don't
// override their accelerators.
gboolean OnKeyPress(GtkWindow* window, GdkEventKey* event, Browser* browser) {
  // If a widget besides the native view is focused, we have to try to handle
  // the custom accelerators before letting it handle them.
  TabContents* current_tab_contents =
      browser->tabstrip_model()->GetSelectedTabContents();
  // The current tab might not have a render view if it crashed.
  if (!current_tab_contents || !current_tab_contents->GetContentNativeView() ||
      !gtk_widget_is_focus(current_tab_contents->GetContentNativeView())) {
    if (HandleCustomAccelerator(event->keyval,
        GdkModifierType(event->state), browser) ||
        PreHandleAccelerator(event->keyval,
        GdkModifierType(event->state), browser)) {
      return TRUE;
    }

    return gtk_window_propagate_key_event(window, event);
  } else {
    bool rv = gtk_window_propagate_key_event(window, event);
    DCHECK(rv);
    return TRUE;
  }
}

gboolean OnFocusIn(GtkWidget* widget, GdkEventFocus* event, Browser* browser) {
  BrowserList::SetLastActive(browser);
  return FALSE;
}

GdkCursorType GdkWindowEdgeToGdkCursorType(GdkWindowEdge edge) {
  switch (edge) {
    case GDK_WINDOW_EDGE_NORTH_WEST:
      return GDK_TOP_LEFT_CORNER;
    case GDK_WINDOW_EDGE_NORTH:
      return GDK_TOP_SIDE;
    case GDK_WINDOW_EDGE_NORTH_EAST:
      return GDK_TOP_RIGHT_CORNER;
    case GDK_WINDOW_EDGE_WEST:
      return GDK_LEFT_SIDE;
    case GDK_WINDOW_EDGE_EAST:
      return GDK_RIGHT_SIDE;
    case GDK_WINDOW_EDGE_SOUTH_WEST:
      return GDK_BOTTOM_LEFT_CORNER;
    case GDK_WINDOW_EDGE_SOUTH:
      return GDK_BOTTOM_SIDE;
    case GDK_WINDOW_EDGE_SOUTH_EAST:
      return GDK_BOTTOM_RIGHT_CORNER;
    default:
      NOTREACHED();
  }
  return GDK_LAST_CURSOR;
}

}  // namespace

std::map<XID, GtkWindow*> BrowserWindowGtk::xid_map_;

BrowserWindowGtk::BrowserWindowGtk(Browser* browser)
    :  browser_(browser),
       full_screen_(false),
#if defined(OS_CHROMEOS)
       drag_active_(false),
       panel_controller_(NULL),
#endif
       frame_cursor_(NULL) {
  use_custom_frame_.Init(prefs::kUseCustomChromeFrame,
      browser_->profile()->GetPrefs(), this);
  window_ = GTK_WINDOW(gtk_window_new(GTK_WINDOW_TOPLEVEL));
  g_object_set_data(G_OBJECT(window_), kBrowserWindowKey, this);
  gtk_widget_add_events(GTK_WIDGET(window_), GDK_BUTTON_PRESS_MASK |
                                             GDK_POINTER_MOTION_MASK);

  SetWindowIcon();
  SetBackgroundColor();
  SetGeometryHints();
  ConnectHandlersToSignals();
  ConnectAccelerators();
  bounds_ = GetInitialWindowBounds(window_);

  InitWidgets();
  HideUnsupportedWindowFeatures();

  registrar_.Add(this, NotificationType::BOOKMARK_BAR_VISIBILITY_PREF_CHANGED,
                 NotificationService::AllSources());
}

BrowserWindowGtk::~BrowserWindowGtk() {
  browser_->tabstrip_model()->RemoveObserver(this);

  if (frame_cursor_) {
    gdk_cursor_unref(frame_cursor_);
    frame_cursor_ = NULL;
  }
}

void BrowserWindowGtk::HandleAccelerator(guint keyval,
                                         GdkModifierType modifier) {
  if (!HandleCustomAccelerator(keyval, modifier, browser_.get())) {
    // Pass the accelerator on to GTK.
    gtk_accel_groups_activate(G_OBJECT(window_), keyval, modifier);
  }
}

gboolean BrowserWindowGtk::OnCustomFrameExpose(GtkWidget* widget,
                                               GdkEventExpose* event,
                                               BrowserWindowGtk* window) {
  // TODO(tc): This will have to be dynamic once themes are supported.  Maybe
  // detect the theme install and delete the pointer?
  static NineBox* custom_frame_border = NULL;
  static NineBox* default_background = NULL;
  static NineBox* default_background_otr = NULL;

  ThemeProvider* theme_provider =
      window->browser()->profile()->GetThemeProvider();
  if (!default_background) {
    default_background = new NineBox(theme_provider,
        0, IDR_THEME_FRAME, 0, 0, 0, 0, 0, 0, 0);
    default_background_otr = new NineBox(theme_provider,
        0, IDR_THEME_FRAME_INCOGNITO, 0, 0, 0, 0, 0, 0, 0);
  }

  // Draw the default background.
  cairo_t* cr = gdk_cairo_create(GDK_DRAWABLE(widget->window));
  cairo_rectangle(cr, event->area.x, event->area.y, event->area.width,
                  event->area.height);
  cairo_clip(cr);
  NineBox* image = window->browser()->profile()->IsOffTheRecord()
      ? default_background_otr : default_background;
  image->RenderTopCenterStrip(cr, 0, 0, widget->allocation.width);
  cairo_destroy(cr);

  // TODO(tc): Draw the theme overlay.  The windows code is below.
  // if (theme_provider->HasCustomImage(IDR_THEME_FRAME_OVERLAY)) {
  //   SkBitmap* theme_overlay = theme_provider->GetBitmapNamed(
  //       IDR_THEME_FRAME_OVERLAY);
  //   canvas->DrawBitmapInt(*theme_overlay, 0, 0);
  // }

  if (window->use_custom_frame_.GetValue() && !window->IsMaximized()) {
    if (!custom_frame_border) {
      custom_frame_border = new NineBox(
          theme_provider,
          IDR_WINDOW_TOP_LEFT_CORNER,
          IDR_WINDOW_TOP_CENTER,
          IDR_WINDOW_TOP_RIGHT_CORNER,
          IDR_WINDOW_LEFT_SIDE,
          NULL,
          IDR_WINDOW_RIGHT_SIDE,
          IDR_WINDOW_BOTTOM_LEFT_CORNER,
          IDR_WINDOW_BOTTOM_CENTER,
          IDR_WINDOW_BOTTOM_RIGHT_CORNER);
    }

    custom_frame_border->RenderToWidget(widget);
  }

  return FALSE;  // Allow subwidgets to paint.
}

void BrowserWindowGtk::Show() {
  // The Browser associated with this browser window must become the active
  // browser at the time Show() is called. This is the natural behaviour under
  // Windows, but gtk_widget_show won't show the widget (and therefore won't
  // call OnFocusIn()) until we return to the runloop. Therefore any calls to
  // BrowserList::GetLastActive() (for example, in bookmark_util), will return
  // the previous browser instead if we don't explicitly set it here.
  BrowserList::SetLastActive(browser());

#if defined(OS_CHROMEOS)
  if (browser_->type() == Browser::TYPE_POPUP) {
    panel_controller_ = new PanelController(this);
  } else {
    TabOverviewTypes::instance()->SetWindowType(
        GTK_WIDGET(window_),
        TabOverviewTypes::WINDOW_TYPE_CHROME_TOPLEVEL,
        NULL);
  }
#endif

  gtk_widget_show(GTK_WIDGET(window_));
}

void BrowserWindowGtk::SetBounds(const gfx::Rect& bounds) {
  gint x = static_cast<gint>(bounds.x());
  gint y = static_cast<gint>(bounds.y());
  gint width = static_cast<gint>(bounds.width());
  gint height = static_cast<gint>(bounds.height());

  gtk_window_move(window_, x, y);
  gtk_window_resize(window_, width, height);
}

void BrowserWindowGtk::Close() {
  // We're already closing.  Do nothing.
  if (!window_)
    return;

  if (!CanClose())
    return;

  SaveWindowPosition();

  GtkWidget* window = GTK_WIDGET(window_);
  // To help catch bugs in any event handlers that might get fired during the
  // destruction, set window_ to NULL before any handlers will run.
  window_ = NULL;
  gtk_widget_destroy(window);

#if defined(OS_CHROMEOS)
  if (panel_controller_) {
    panel_controller_->Close();
  }
#endif
}

void BrowserWindowGtk::Activate() {
  gtk_window_present(window_);
}

bool BrowserWindowGtk::IsActive() const {
  NOTIMPLEMENTED();
  return true;
}

void BrowserWindowGtk::FlashFrame() {
  // May not be respected by all window managers.
  gtk_window_set_urgency_hint(window_, TRUE);
}

gfx::NativeWindow BrowserWindowGtk::GetNativeHandle() {
  return window_;
}

BrowserWindowTesting* BrowserWindowGtk::GetBrowserWindowTesting() {
  NOTIMPLEMENTED();
  return NULL;
}

StatusBubble* BrowserWindowGtk::GetStatusBubble() {
  return status_bubble_.get();
}

void BrowserWindowGtk::SelectedTabToolbarSizeChanged(bool is_animating) {
  // On Windows, this is used for a performance optimization.
  // http://code.google.com/p/chromium/issues/detail?id=12291
}

void BrowserWindowGtk::UpdateTitleBar() {
#if defined(OS_CHROMEOS)
  if (panel_controller_)
    panel_controller_->UpdateTitleBar();
#endif

  std::wstring title = browser_->GetCurrentPageTitle();
  gtk_window_set_title(window_, WideToUTF8(title).c_str());
  if (ShouldShowWindowIcon()) {
    // TODO(tc): If we're showing a title bar, we should update the app icon.
  }
}

void BrowserWindowGtk::UpdateDevTools() {
  NOTIMPLEMENTED();
}

void BrowserWindowGtk::UpdateLoadingAnimations(bool should_animate) {
  if (should_animate) {
    if (!loading_animation_timer_.IsRunning()) {
      // Loads are happening, and the timer isn't running, so start it.
      loading_animation_timer_.Start(
          base::TimeDelta::FromMilliseconds(kLoadingAnimationFrameTimeMs), this,
          &BrowserWindowGtk::LoadingAnimationCallback);
    }
  } else {
    if (loading_animation_timer_.IsRunning()) {
      loading_animation_timer_.Stop();
      // Loads are now complete, update the state if a task was scheduled.
      LoadingAnimationCallback();
    }
  }
}

void BrowserWindowGtk::LoadingAnimationCallback() {
  if (browser_->type() == Browser::TYPE_NORMAL) {
    // Loading animations are shown in the tab for tabbed windows.  We check the
    // browser type instead of calling IsTabStripVisible() because the latter
    // will return false for fullscreen windows, but we still need to update
    // their animations (so that when they come out of fullscreen mode they'll
    // be correct).
    tabstrip_->UpdateLoadingAnimations();
  } else if (ShouldShowWindowIcon()) {
    // ... or in the window icon area for popups and app windows.
    // http://code.google.com/p/chromium/issues/detail?id=9380
    // TODO(willchan): implement this.
  }
}

void BrowserWindowGtk::SetStarredState(bool is_starred) {
  toolbar_->star()->SetStarred(is_starred);
}

gfx::Rect BrowserWindowGtk::GetNormalBounds() const {
  return bounds_;
}

bool BrowserWindowGtk::IsMaximized() const {
  return (state_ & GDK_WINDOW_STATE_MAXIMIZED);
}

void BrowserWindowGtk::SetFullscreen(bool fullscreen) {
  full_screen_ = fullscreen;
  UpdateCustomFrame();

  if (fullscreen) {
    // These three balanced by ShowSupportedWindowFeatures().
    toolbar_->Hide();
    tabstrip_->Hide();
    bookmark_bar_->Hide(false);

    gtk_window_fullscreen(window_);
  } else {
    ShowSupportedWindowFeatures();

    gtk_window_unfullscreen(window_);
  }
}

bool BrowserWindowGtk::IsFullscreen() const {
  return full_screen_;
}

LocationBar* BrowserWindowGtk::GetLocationBar() const {
  return toolbar_->GetLocationBar();
}

void BrowserWindowGtk::SetFocusToLocationBar() {
  GetLocationBar()->FocusLocation();
}

void BrowserWindowGtk::UpdateStopGoState(bool is_loading, bool force) {
  toolbar_->GetGoButton()->ChangeMode(
      is_loading ? GoButtonGtk::MODE_STOP : GoButtonGtk::MODE_GO, force);
}

void BrowserWindowGtk::UpdateToolbar(TabContents* contents,
                                     bool should_restore_state) {
  toolbar_->UpdateTabContents(contents, should_restore_state);
}

void BrowserWindowGtk::FocusToolbar() {
  NOTIMPLEMENTED();
}

bool BrowserWindowGtk::IsBookmarkBarVisible() const {
  return browser_->SupportsWindowFeature(Browser::FEATURE_BOOKMARKBAR) &&
      bookmark_bar_.get();
}

gfx::Rect BrowserWindowGtk::GetRootWindowResizerRect() const {
  return gfx::Rect();
}

void BrowserWindowGtk::ConfirmAddSearchProvider(const TemplateURL* template_url,
                                                Profile* profile) {
  new EditSearchEngineDialog(window_, template_url, NULL, profile);
}

void BrowserWindowGtk::ToggleBookmarkBar() {
  bookmark_utils::ToggleWhenVisible(browser_->profile());
}

void BrowserWindowGtk::ShowAboutChromeDialog() {
  ShowAboutDialogForProfile(window_, browser_->profile());
}

void BrowserWindowGtk::ShowTaskManager() {
  TaskManagerGtk::Show();
}

void BrowserWindowGtk::ShowBookmarkManager() {
  BookmarkManagerGtk::Show(browser_->profile());
}

void BrowserWindowGtk::ShowBookmarkBubble(const GURL& url,
                                          bool already_bookmarked) {
  toolbar_->star()->ShowStarBubble(url, !already_bookmarked);
}

bool BrowserWindowGtk::IsDownloadShelfVisible() const {
  return download_shelf_.get() && download_shelf_->IsShowing();
}

DownloadShelf* BrowserWindowGtk::GetDownloadShelf() {
  if (!download_shelf_.get())
    download_shelf_.reset(new DownloadShelfGtk(browser_.get(),
                                               render_area_vbox_));
  return download_shelf_.get();
}

void BrowserWindowGtk::ShowReportBugDialog() {
  NOTIMPLEMENTED();
}

void BrowserWindowGtk::ShowClearBrowsingDataDialog() {
  ClearBrowsingDataDialogGtk::Show(window_, browser_->profile());
}

void BrowserWindowGtk::ShowImportDialog() {
  ImportDialogGtk::Show(window_, browser_->profile());
}

void BrowserWindowGtk::ShowSearchEnginesDialog() {
  KeywordEditorView::Show(browser_->profile());
}

void BrowserWindowGtk::ShowPasswordManager() {
  NOTIMPLEMENTED();
}

void BrowserWindowGtk::ShowSelectProfileDialog() {
  NOTIMPLEMENTED();
}

void BrowserWindowGtk::ShowNewProfileDialog() {
  NOTIMPLEMENTED();
}

void BrowserWindowGtk::ShowHTMLDialog(HtmlDialogUIDelegate* delegate,
                                      gfx::NativeWindow parent_window) {
  NOTIMPLEMENTED();
}

void BrowserWindowGtk::UserChangedTheme() {
  SetBackgroundColor();
  gdk_window_invalidate_rect(GTK_WIDGET(window_)->window,
      &GTK_WIDGET(window_)->allocation, TRUE);

  toolbar_->UserChangedTheme();
  GtkThemeProperties properties(browser_->profile());
  bookmark_bar_->UserChangedTheme(&properties);
  status_bubble_->UserChangedTheme(&properties);
  tabstrip_->UserChangedTheme(&properties);
}

int BrowserWindowGtk::GetExtraRenderViewHeight() const {
  int sum = infobar_container_->TotalHeightOfClosingBars();
  if (bookmark_bar_->IsClosing())
    sum += bookmark_bar_->GetHeight();
  if (download_shelf_.get() && download_shelf_->IsClosing()) {
    sum += download_shelf_->GetHeight();
  }
  return sum;
}

void BrowserWindowGtk::TabContentsFocused(TabContents* tab_contents) {
  NOTIMPLEMENTED();
}

void BrowserWindowGtk::ConfirmBrowserCloseWithPendingDownloads() {
  NOTIMPLEMENTED();
  browser_->InProgressDownloadResponse(false);
}

void BrowserWindowGtk::Observe(NotificationType type,
                               const NotificationSource& source,
                               const NotificationDetails& details) {
  if (type == NotificationType::BOOKMARK_BAR_VISIBILITY_PREF_CHANGED) {
    MaybeShowBookmarkBar(browser_->GetSelectedTabContents(), true);
  } else if (type == NotificationType::PREF_CHANGED) {
    std::wstring* pref_name = Details<std::wstring>(details).ptr();
    if (*pref_name == prefs::kUseCustomChromeFrame) {
      UpdateCustomFrame();
    } else {
      NOTREACHED() << "Got a pref change notification we didn't register for!";
    }
  } else {
    NOTREACHED() << "Got a notification we didn't register for!";
  }
}

void BrowserWindowGtk::TabDetachedAt(TabContents* contents, int index) {
  // We use index here rather than comparing |contents| because by this time
  // the model has already removed |contents| from its list, so
  // browser_->GetSelectedTabContents() will return NULL or something else.
  if (index == browser_->tabstrip_model()->selected_index())
    infobar_container_->ChangeTabContents(NULL);
  contents_container_->DetachTabContents(contents);
}

// TODO(estade): this function should probably be unforked from the BrowserView
// function of the same name by having a shared partial BrowserWindow
// implementation.
void BrowserWindowGtk::TabSelectedAt(TabContents* old_contents,
                                     TabContents* new_contents,
                                     int index,
                                     bool user_gesture) {
  DCHECK(old_contents != new_contents);

  if (old_contents && !old_contents->is_being_destroyed())
    old_contents->view()->StoreFocus();

  // Update various elements that are interested in knowing the current
  // TabContents.
  infobar_container_->ChangeTabContents(new_contents);
  contents_container_->SetTabContents(new_contents);

  new_contents->DidBecomeSelected();
  // TODO(estade): after we manage browser activation, add a check to make sure
  // we are the active browser before calling RestoreFocus().
  if (!browser_->tabstrip_model()->closing_all())
    new_contents->view()->RestoreFocus();

  // Update all the UI bits.
  UpdateTitleBar();
  toolbar_->SetProfile(new_contents->profile());
  UpdateToolbar(new_contents, true);
  UpdateUIForContents(new_contents);
}

void BrowserWindowGtk::TabStripEmpty() {
  UpdateUIForContents(NULL);
}

void BrowserWindowGtk::MaybeShowBookmarkBar(TabContents* contents,
                                            bool animate) {
  // Don't change the visibility state when the browser is full screen or if
  // the bookmark bar isn't supported.
  if (full_screen_ || !IsBookmarkBarSupported())
    return;

  bool show_bar = false;

  if (browser_->SupportsWindowFeature(Browser::FEATURE_BOOKMARKBAR)
      && contents) {
    bookmark_bar_->SetProfile(contents->profile());
    bookmark_bar_->SetPageNavigator(contents);
    show_bar = true;
  }

  if (show_bar) {
    PrefService* prefs = contents->profile()->GetPrefs();
    show_bar = prefs->GetBoolean(prefs::kShowBookmarkBar);
  }

  if (show_bar) {
    bookmark_bar_->Show(animate);
  } else {
    bookmark_bar_->Hide(animate);
  }
}

void BrowserWindowGtk::UpdateUIForContents(TabContents* contents) {
  MaybeShowBookmarkBar(contents, false);
}

void BrowserWindowGtk::DestroyBrowser() {
  browser_.reset();
}

void BrowserWindowGtk::OnBoundsChanged(const gfx::Rect& bounds) {
  if (bounds_.size() != bounds.size())
    OnSizeChanged(bounds.width(), bounds.height());

  bounds_ = bounds;
  SaveWindowPosition();
}

void BrowserWindowGtk::OnStateChanged(GdkWindowState state) {
  state_ = state;

  UpdateWindowShape(bounds_.width(), bounds_.height());
  SaveWindowPosition();
}

bool BrowserWindowGtk::CanClose() const {
#if defined(OS_CHROMEOS)
  if (drag_active_)
    return false;
#endif

  // You cannot close a frame for which there is an active originating drag
  // session.
  if (tabstrip_->IsDragSessionActive())
    return false;

  // Give beforeunload handlers the chance to cancel the close before we hide
  // the window below.
  if (!browser_->ShouldCloseWindow())
    return false;

  if (!browser_->tabstrip_model()->empty()) {
    // Tab strip isn't empty.  Hide the window (so it appears to have closed
    // immediately) and close all the tabs, allowing the renderers to shut
    // down. When the tab strip is empty we'll be called back again.
    gtk_widget_hide(GTK_WIDGET(window_));
    browser_->OnWindowClosing();
    return false;
  }

  // Empty TabStripModel, it's now safe to allow the Window to be closed.
  NotificationService::current()->Notify(
      NotificationType::WINDOW_CLOSED,
      Source<GtkWindow>(window_),
      NotificationService::NoDetails());
  return true;
}

bool BrowserWindowGtk::ShouldShowWindowIcon() const {
  return browser_->SupportsWindowFeature(Browser::FEATURE_TITLEBAR);
}

void BrowserWindowGtk::AddFindBar(FindBarGtk* findbar) {
  gtk_box_pack_start(GTK_BOX(render_area_vbox_), findbar->widget(),
                     FALSE, FALSE, 0);
  gtk_box_reorder_child(GTK_BOX(render_area_vbox_), findbar->widget(), 0);
}

void BrowserWindowGtk::ResetCustomFrameCursor() {
  if (!frame_cursor_)
    return;

  gdk_cursor_unref(frame_cursor_);
  frame_cursor_ = NULL;
  gdk_window_set_cursor(GTK_WIDGET(window_)->window, NULL);
}

// static
BrowserWindowGtk* BrowserWindowGtk::GetBrowserWindowForNativeWindow(
    gfx::NativeWindow window) {
  if (window) {
    return static_cast<BrowserWindowGtk*>(
        g_object_get_data(G_OBJECT(window), kBrowserWindowKey));
  }

  return NULL;
}

// static
GtkWindow* BrowserWindowGtk::GetBrowserWindowForXID(XID xid) {
  return BrowserWindowGtk::xid_map_.find(xid)->second;
}

void BrowserWindowGtk::SetGeometryHints() {
  // Allow the user to resize us arbitrarily small.
  GdkGeometry geometry;
  geometry.min_width = 1;
  geometry.min_height = 1;
  gtk_window_set_geometry_hints(window_, NULL, &geometry, GDK_HINT_MIN_SIZE);

  if (browser_->GetSavedMaximizedState())
    gtk_window_maximize(window_);
  else
    gtk_window_unmaximize(window_);

  gfx::Rect bounds = browser_->GetSavedWindowBounds();
  // Note that calling SetBounds() here is incorrect, as that sets a forced
  // position on the window and we intentionally *don't* do that.  We tested
  // many programs and none of them restored their position on Linux.
  gtk_window_resize(window_, bounds.width(), bounds.height());
}

void BrowserWindowGtk::SetWindowIcon() {
  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
  GList* icon_list = NULL;
  icon_list = g_list_append(icon_list, rb.GetPixbufNamed(IDR_PRODUCT_ICON_32));
  icon_list = g_list_append(icon_list, rb.GetPixbufNamed(IDR_PRODUCT_LOGO_16));
  gtk_window_set_icon_list(window_, icon_list);
  g_list_free(icon_list);
}

void BrowserWindowGtk::ConnectHandlersToSignals() {
  g_signal_connect(window_, "delete-event",
                   G_CALLBACK(MainWindowDeleteEvent), this);
  g_signal_connect(window_, "destroy",
                   G_CALLBACK(MainWindowDestroy), this);
  g_signal_connect(window_, "configure-event",
                   G_CALLBACK(MainWindowConfigured), this);
  g_signal_connect(window_, "window-state-event",
                   G_CALLBACK(MainWindowStateChanged), this);
  g_signal_connect(window_, "map",
                   G_CALLBACK(MainWindowMapped), this);
  g_signal_connect(window_, "unmap",
                     G_CALLBACK(MainWindowUnMapped), this);
  g_signal_connect(window_, "key-press-event",
                   G_CALLBACK(OnKeyPress), browser_.get());
  g_signal_connect(window_, "motion-notify-event",
                   G_CALLBACK(OnMouseMoveEvent), this);
  g_signal_connect(window_, "button-press-event",
                   G_CALLBACK(OnButtonPressEvent), this);
  g_signal_connect(window_, "focus-in-event",
                   G_CALLBACK(OnFocusIn), browser_.get());
}

void BrowserWindowGtk::InitWidgets() {
  // This vbox encompasses all of the widgets within the browser, including the
  // tabstrip and the content vbox.  The vbox is put in a floating container
  // (see gtk_floating_container.h) so we can position the
  // minimize/maximize/close buttons.  The floating container is then put in an
  // alignment so we can do custom frame drawing if the user turns of window
  // manager decorations.
  GtkWidget* window_vbox = gtk_vbox_new(FALSE, 0);
  gtk_widget_show(window_vbox);

  // The window container draws the custom browser frame.
  window_container_ = gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
  gtk_widget_set_app_paintable(window_container_, TRUE);
  gtk_widget_set_double_buffered(window_container_, FALSE);
  gtk_widget_set_redraw_on_allocate(window_container_, TRUE);
  g_signal_connect(G_OBJECT(window_container_), "expose-event",
                   G_CALLBACK(&OnCustomFrameExpose), this);
  gtk_container_add(GTK_CONTAINER(window_container_), window_vbox);

  tabstrip_.reset(new TabStripGtk(browser_->tabstrip_model()));
  tabstrip_->Init();

  // Build the titlebar (tabstrip + header space + min/max/close buttons).
  titlebar_.reset(new BrowserTitlebar(this, window_));
  gtk_box_pack_start(GTK_BOX(window_vbox), titlebar_->widget(), FALSE, FALSE,
                     0);

  // The content_vbox_ surrounds the "content": toolbar+bookmarks bar+page.
  content_vbox_ = gtk_vbox_new(FALSE, 0);
  gtk_widget_show(content_vbox_);

  toolbar_.reset(new BrowserToolbarGtk(browser_.get(), this));
  toolbar_->Init(browser_->profile(), window_);
  toolbar_->AddToolbarToBox(content_vbox_);

  bookmark_bar_.reset(new BookmarkBarGtk(browser_->profile(), browser_.get(),
                                         this));
  bookmark_bar_->AddBookmarkbarToBox(content_vbox_);

  // This vbox surrounds the render area: find bar, info bars and render view.
  // The reason is that this area as a whole needs to be grouped in its own
  // GdkWindow hierarchy so that animations originating inside it (infobar,
  // download shelf, find bar) are all clipped to that area. This is why
  // |render_area_vbox_| is packed in |event_box|.
  render_area_vbox_ = gtk_vbox_new(FALSE, 0);
  infobar_container_.reset(new InfoBarContainerGtk(this));
  gtk_box_pack_start(GTK_BOX(render_area_vbox_),
                     infobar_container_->widget(),
                     FALSE, FALSE, 0);

  status_bubble_.reset(new StatusBubbleGtk(browser_->profile()));

  contents_container_.reset(new TabContentsContainerGtk(status_bubble_.get()));
  contents_container_->AddContainerToBox(render_area_vbox_);
  gtk_widget_show_all(render_area_vbox_);

#if defined(OS_CHROMEOS)
  if (browser_->type() == Browser::TYPE_POPUP) {
    toolbar_->Hide();
    // The window manager needs the min size for popups
    gtk_widget_set_size_request(
        GTK_WIDGET(window_), bounds_.width(), bounds_.height());
  }
#endif

  // We have to realize the window before we try to apply a window shape mask.
  gtk_widget_realize(GTK_WIDGET(window_));
  state_ = gdk_window_get_state(GTK_WIDGET(window_)->window);
  // Note that calling this the first time is necessary to get the
  // proper control layout.
  UpdateCustomFrame();

  GtkWidget* event_box = gtk_event_box_new();
  gtk_container_add(GTK_CONTAINER(event_box), render_area_vbox_);
  gtk_widget_show(event_box);
  gtk_container_add(GTK_CONTAINER(content_vbox_), event_box);
  gtk_container_add(GTK_CONTAINER(window_vbox), content_vbox_);
  gtk_container_add(GTK_CONTAINER(window_), window_container_);
  gtk_widget_show(window_container_);
  browser_->tabstrip_model()->AddObserver(this);
}

void BrowserWindowGtk::SetBackgroundColor() {
  // TODO(tc): Handle active/inactive colors.
  Profile* profile = browser()->profile();
  ThemeProvider* theme_provider = profile->GetThemeProvider();
  SkColor frame_color;
  if (browser()->profile()->IsOffTheRecord()) {
    frame_color = theme_provider->GetColor(
        BrowserThemeProvider::COLOR_FRAME_INCOGNITO);
  } else {
    frame_color = theme_provider->GetColor(BrowserThemeProvider::COLOR_FRAME);
  }

  // Paint the frame color on the left, right and bottom.
  GdkColor frame_color_gdk = GDK_COLOR_RGB(SkColorGetR(frame_color),
      SkColorGetG(frame_color), SkColorGetB(frame_color));
  gtk_widget_modify_bg(GTK_WIDGET(window_), GTK_STATE_NORMAL,
                       &frame_color_gdk);
}

void BrowserWindowGtk::OnSizeChanged(int width, int height) {
  UpdateWindowShape(width, height);
}

void BrowserWindowGtk::UpdateWindowShape(int width, int height) {
  if (use_custom_frame_.GetValue() && !full_screen_ && !IsMaximized()) {
    // Make the top corners rounded.  We set a mask that includes most of the
    // window except for a few pixels in the top two corners.
    GdkRectangle top_rect = { 3, 0, width - 6, 1 };
    GdkRectangle mid_rect = { 1, 1, width - 2, 2 };
    GdkRectangle bot_rect = { 0, 3, width, height - 3 };
    GdkRegion* mask = gdk_region_rectangle(&top_rect);
    gdk_region_union_with_rect(mask, &mid_rect);
    gdk_region_union_with_rect(mask, &bot_rect);
    gdk_window_shape_combine_region(GTK_WIDGET(window_)->window, mask, 0, 0);
    gdk_region_destroy(mask);
    gtk_alignment_set_padding(GTK_ALIGNMENT(window_container_), 1,
        kFrameBorderThickness, kFrameBorderThickness, kFrameBorderThickness);
  } else {
    if (use_custom_frame_.GetValue()) {
      // Disable rounded corners.  Simply passing in a NULL region doesn't
      // seem to work on KWin, so manually set the shape to the whole window.
      GdkRectangle rect = { 0, 0, width, height };
      GdkRegion* mask = gdk_region_rectangle(&rect);
      gdk_window_shape_combine_region(GTK_WIDGET(window_)->window, mask, 0, 0);
      gdk_region_destroy(mask);
    } else {
      gdk_window_shape_combine_region(GTK_WIDGET(window_)->window, NULL, 0, 0);
    }
    gtk_alignment_set_padding(GTK_ALIGNMENT(window_container_), 0, 0, 0, 0);
  }
}

void BrowserWindowGtk::ConnectAccelerators() {
  GtkAccelGroup* accel_group = gtk_accel_group_new();
  gtk_window_add_accel_group(window_, accel_group);
  // Drop the initial ref on |accel_group| so |window_| will own it.
  g_object_unref(accel_group);

  for (size_t i = 0; i < arraysize(kAcceleratorMap); ++i) {
    gtk_accel_group_connect(
        accel_group,
        kAcceleratorMap[i].keyval,
        kAcceleratorMap[i].modifier_type,
        GtkAccelFlags(0),
        g_cclosure_new(G_CALLBACK(OnGtkAccelerator), this, NULL));
  }
}

void BrowserWindowGtk::UpdateCustomFrame() {
  bool enable = use_custom_frame_.GetValue() && !full_screen_;
  gtk_window_set_decorated(window_, !enable);
  titlebar_->UpdateCustomFrame(enable);
  UpdateWindowShape(bounds_.width(), bounds_.height());
}

void BrowserWindowGtk::SaveWindowPosition() {
  // Browser::SaveWindowPlacement is used for session restore.
  if (browser_->ShouldSaveWindowPlacement())
    browser_->SaveWindowPlacement(bounds_, IsMaximized());

  // We also need to save the placement for startup.
  // This is a web of calls between views and delegates on Windows, but the
  // crux of the logic follows.  See also cocoa/browser_window_controller.mm.
  if (!g_browser_process->local_state())
    return;

  std::wstring window_name = browser_->GetWindowPlacementKey();
  DictionaryValue* window_preferences =
      g_browser_process->local_state()->GetMutableDictionary(
          window_name.c_str());
  // Note that we store left/top for consistency with Windows, but that we
  // *don't* obey them; we only use them for computing width/height.  See
  // comments in SetGeometryHints().
  window_preferences->SetInteger(L"left", bounds_.x());
  window_preferences->SetInteger(L"top", bounds_.y());
  window_preferences->SetInteger(L"right", bounds_.right());
  window_preferences->SetInteger(L"bottom", bounds_.bottom());
  window_preferences->SetBoolean(L"maximized", IsMaximized());
}

// static
gboolean BrowserWindowGtk::OnGtkAccelerator(GtkAccelGroup* accel_group,
                                            GObject* acceleratable,
                                            guint keyval,
                                            GdkModifierType modifier,
                                            BrowserWindowGtk* browser_window) {
  int command_id = GetCommandId(keyval, modifier);
  browser_window->ExecuteBrowserCommand(command_id);

  return TRUE;
}

// static
gboolean BrowserWindowGtk::OnMouseMoveEvent(GtkWidget* widget,
    GdkEventMotion* event, BrowserWindowGtk* browser) {
  // Get the mouse position relative to |widget|.  We can't just use event->x
  // and event->y because that's relative to the gdk window that got the
  // event.
  gint x = 0;
  gint y = 0;
  gtk_widget_get_pointer(widget, &x, &y);

  // Update the cursor if we're on the custom frame border.
  GdkWindowEdge edge;
  bool has_hit_edge = browser->GetWindowEdge(x, y, &edge);
  GdkCursorType new_cursor = GDK_LAST_CURSOR;
  if (has_hit_edge)
    new_cursor = GdkWindowEdgeToGdkCursorType(edge);

  GdkCursorType last_cursor = GDK_LAST_CURSOR;
  if (browser->frame_cursor_)
    last_cursor = browser->frame_cursor_->type;

  if (last_cursor != new_cursor) {
    if (browser->frame_cursor_) {
      gdk_cursor_unref(browser->frame_cursor_);
      browser->frame_cursor_ = NULL;
    }
    if (has_hit_edge) {
      browser->frame_cursor_ = gdk_cursor_new(new_cursor);
      gdk_window_set_cursor(GTK_WIDGET(browser->window_)->window,
                            browser->frame_cursor_);
    } else {
      gdk_window_set_cursor(GTK_WIDGET(browser->window_)->window, NULL);
    }
  }
  return FALSE;
}

// static
gboolean BrowserWindowGtk::OnButtonPressEvent(GtkWidget* widget,
    GdkEventButton* event, BrowserWindowGtk* browser) {
  // Handle back/forward.
  // TODO(jhawkins): Investigate the possibility of the button numbers being
  // different for other mice.
  if (event->button == 8) {
    browser->browser_->GoBack(CURRENT_TAB);
    return TRUE;
  } else if (event->button == 9) {
    browser->browser_->GoForward(CURRENT_TAB);
    return TRUE;
  }

  // Handle left and right clicks.  In particular, we care about clicks in the
  // custom frame border and clicks in the titlebar.
  GdkWindowEdge edge;
  bool has_hit_edge = browser->GetWindowEdge(static_cast<int>(event->x),
      static_cast<int>(event->y), &edge);
  // Ignore clicks that are in/below the browser toolbar.
  GtkWidget* toolbar = browser->toolbar_->widget();
  if (!GTK_WIDGET_VISIBLE(toolbar)) {
    // If the toolbar is not showing, use the location of web contents as the
    // boundary of where to ignore clicks.
    toolbar = browser->render_area_vbox_;
  }
  gint toolbar_y;
  gtk_widget_get_pointer(toolbar, NULL, &toolbar_y);
  bool has_hit_titlebar = !browser->IsFullscreen() && (toolbar_y < 0)
      && !has_hit_edge;
  if (event->button == 1) {
    if (GDK_BUTTON_PRESS == event->type) {
      if (has_hit_titlebar) {
        gtk_window_begin_move_drag(browser->window_, event->button,
                                   event->x_root, event->y_root, event->time);
        return TRUE;
      } else if (has_hit_edge) {
        gtk_window_begin_resize_drag(browser->window_, edge, event->button,
                                     event->x_root, event->y_root, event->time);
        return TRUE;
      }
    } else if (GDK_2BUTTON_PRESS == event->type) {
      if (has_hit_titlebar) {
        // Maximize/restore on double click.
        if (browser->IsMaximized()) {
          gtk_window_unmaximize(browser->window_);
        } else {
          gtk_window_maximize(browser->window_);
        }
        return TRUE;
      }
    }
  } else if (event->button == 3) {
    if (has_hit_titlebar) {
      browser->titlebar_->ShowContextMenu();
      return TRUE;
    }
  }

  return FALSE;  // Continue to propagate the event.
}

// static
void BrowserWindowGtk::MainWindowMapped(GtkWidget* widget,
                                        BrowserWindowGtk* window) {
  // Map the X Window ID of the window to our window.
  XID xid = x11_util::GetX11WindowFromGtkWidget(widget);
  BrowserWindowGtk::xid_map_.insert(
      std::pair<XID, GtkWindow*>(xid, GTK_WINDOW(widget)));
}

// static
void BrowserWindowGtk::MainWindowUnMapped(GtkWidget* widget,
                                          BrowserWindowGtk* window) {
  // Unmap the X Window ID.
  XID xid = x11_util::GetX11WindowFromGtkWidget(widget);
  BrowserWindowGtk::xid_map_.erase(xid);
}

void BrowserWindowGtk::ExecuteBrowserCommand(int id) {
  if (browser_->command_updater()->IsCommandEnabled(id))
    browser_->ExecuteCommand(id);
}

void BrowserWindowGtk::ShowSupportedWindowFeatures() {
  if (IsTabStripSupported())
    tabstrip_->Show();

  if (IsToolbarSupported())
    toolbar_->Show();

  if (IsBookmarkBarSupported())
    MaybeShowBookmarkBar(browser_->GetSelectedTabContents(), false);
}

void BrowserWindowGtk::HideUnsupportedWindowFeatures() {
  if (!IsTabStripSupported())
    tabstrip_->Hide();

  if (!IsToolbarSupported())
    toolbar_->Hide();

  if (!IsBookmarkBarSupported())
    bookmark_bar_->Hide(false);
}

bool BrowserWindowGtk::IsTabStripSupported() {
  return browser_->SupportsWindowFeature(Browser::FEATURE_TABSTRIP);
}

bool BrowserWindowGtk::IsToolbarSupported() {
  return browser_->SupportsWindowFeature(Browser::FEATURE_TOOLBAR) ||
         browser_->SupportsWindowFeature(Browser::FEATURE_LOCATIONBAR);
}

bool BrowserWindowGtk::IsBookmarkBarSupported() {
  return browser_->SupportsWindowFeature(Browser::FEATURE_BOOKMARKBAR);
}

bool BrowserWindowGtk::GetWindowEdge(int x, int y, GdkWindowEdge* edge) {
  if (!use_custom_frame_.GetValue())
    return false;

  if (IsMaximized() || IsFullscreen())
    return false;

  if (x < kFrameBorderThickness) {
    // Left edge.
    if (y < kResizeAreaCornerSize - kTopResizeAdjust) {
      *edge = GDK_WINDOW_EDGE_NORTH_WEST;
    } else if (y < bounds_.height() - kResizeAreaCornerSize) {
      *edge = GDK_WINDOW_EDGE_WEST;
    } else {
      *edge = GDK_WINDOW_EDGE_SOUTH_WEST;
    }
    return true;
  } else if (x < bounds_.width() - kFrameBorderThickness) {
    if (y < kFrameBorderThickness - kTopResizeAdjust) {
      // Top edge.
      if (x < kResizeAreaCornerSize) {
        *edge = GDK_WINDOW_EDGE_NORTH_WEST;
      } else if (x < bounds_.width() - kResizeAreaCornerSize) {
        *edge = GDK_WINDOW_EDGE_NORTH;
      } else {
        *edge = GDK_WINDOW_EDGE_NORTH_EAST;
      }
    } else if (y < bounds_.height() - kFrameBorderThickness) {
      // Ignore the middle content area.
      return false;
    } else {
      // Bottom edge.
      if (x < kResizeAreaCornerSize) {
        *edge = GDK_WINDOW_EDGE_SOUTH_WEST;
      } else if (x < bounds_.width() - kResizeAreaCornerSize) {
        *edge = GDK_WINDOW_EDGE_SOUTH;
      } else {
        *edge = GDK_WINDOW_EDGE_SOUTH_EAST;
      }
    }
    return true;
  } else {
    // Right edge.
    if (y < kResizeAreaCornerSize - kTopResizeAdjust) {
      *edge = GDK_WINDOW_EDGE_NORTH_EAST;
    } else if (y < bounds_.height() - kResizeAreaCornerSize) {
      *edge = GDK_WINDOW_EDGE_EAST;
    } else {
      *edge = GDK_WINDOW_EDGE_SOUTH_EAST;
    }
    return true;
  }
  NOTREACHED();
}