gtk2/gtk/gtkfilechooserbutton.c

/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */

/* gtkfilechooserbutton.c
 *
 * Copyright (c) 2004 James M. Cape <jcape@ignore-your.tv>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include <string.h>
#include <cairo-gobject.h>

#include "gtkintl.h"
#include "gtkbookmarksmanagerprivate.h"
#include "gtkbutton.h"
#include "gtkcelllayout.h"
#include "gtkcellrenderertext.h"
#include "gtkcellrendererpixbuf.h"
#include "gtkcombobox.h"
#include "gtkdroptarget.h"
#include "gtkicontheme.h"
#include "gtkimage.h"
#include "gtklabel.h"
#include "gtkliststore.h"
#include "gtktreemodelfilter.h"
#include "gtkseparator.h"
#include "gtkfilechooserdialog.h"
#include "gtkfilechoosernative.h"
#include "gtkfilechooserprivate.h"
#include "gtkfilechooserutils.h"
#include "gtkmarshalers.h"
#include "gtkbinlayout.h"

#include "gtkfilechooserbutton.h"

#include "gtkorientable.h"

#include "gtktypebuiltins.h"
#include "gtkprivate.h"
#include "gtksettings.h"
#include "gtkstylecontextprivate.h"
#include "gtkbitmaskprivate.h"
#include "gtkeventcontroller.h"
#include "gtkwidgetprivate.h"

/**
 * SECTION:gtkfilechooserbutton
 * @Short_description: A button to launch a file chooser dialog
 * @Title: GtkFileChooserButton
 * @See_also:#GtkFileChooserDialog
 *
 * The #GtkFileChooserButton is a widget that lets the user select a
 * file.  It implements the #GtkFileChooser interface.  Visually, it is a
 * file name with a button to bring up a #GtkFileChooserDialog.
 * The user can then use that dialog to change the file associated with
 * that button.  This widget does not support setting the
 * #GtkFileChooser:select-multiple property to %TRUE.
 *
 * ## Create a button to let the user select a file in /etc
 *
 * |[<!-- language="C" -->
 * {
 *   GtkWidget *button;
 *   GFile *cwd = g_file_new_for_path ("/etc");
 *
 *   button = gtk_file_chooser_button_new (_("Select a file"),
 *                                         GTK_FILE_CHOOSER_ACTION_OPEN);
 *   gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (button), cwd, NULL);
 *   g_object_unref (cwd);
 * }
 * ]|
 *
 * The #GtkFileChooserButton supports the #GtkFileChooserActions
 * %GTK_FILE_CHOOSER_ACTION_OPEN and %GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER.
 *
 * > The #GtkFileChooserButton will ellipsize the label, and will thus
 * > request little horizontal space.  To give the button more space,
 * > you should call gtk_widget_get_preferred_size(),
 * > gtk_file_chooser_button_set_width_chars(), or pack the button in
 * > such a way that other interface elements give space to the
 * > widget.
 *
 * # CSS nodes
 *
 * GtkFileChooserButton has a single CSS node with the name “filechooserbutton”.
 */


/* **************** *
 *  Private Macros  *
 * **************** */

#define ICON_SIZE               16
#define DEFAULT_TITLE           N_("Select a File")
#define DESKTOP_DISPLAY_NAME    N_("Desktop")
#define FALLBACK_DISPLAY_NAME N_("(None)")


/* ********************** *
 *  Private Enumerations  *
 * ********************** */

/* Property IDs */
enum
{
  PROP_0,

  PROP_DIALOG,
  PROP_TITLE,
  PROP_WIDTH_CHARS,
  PROP_MODAL
};

/* Signals */
enum
{
  FILE_SET,
  LAST_SIGNAL
};

/* TreeModel Columns
 */
enum
{
  ICON_COLUMN,
  DISPLAY_NAME_COLUMN,
  TYPE_COLUMN,
  DATA_COLUMN,
  IS_FOLDER_COLUMN,
  CANCELLABLE_COLUMN,
  NUM_COLUMNS
};

/* TreeModel Row Types */
typedef enum
{
  ROW_TYPE_SPECIAL,
  ROW_TYPE_VOLUME,
  ROW_TYPE_SHORTCUT,
  ROW_TYPE_BOOKMARK_SEPARATOR,
  ROW_TYPE_BOOKMARK,
  ROW_TYPE_CURRENT_FOLDER_SEPARATOR,
  ROW_TYPE_CURRENT_FOLDER,
  ROW_TYPE_OTHER_SEPARATOR,
  ROW_TYPE_OTHER,

  ROW_TYPE_INVALID = -1
}
RowType;


/* ******************** *
 *  Private Structures  *
 * ******************** */

typedef struct _GtkFileChooserButtonClass   GtkFileChooserButtonClass;

struct _GtkFileChooserButton
{
  GtkWidget parent_instance;

  GtkFileChooser *chooser;      /* Points to either dialog or native, depending on which is set */
  GtkWidget *dialog;            /* Set if you explicitly enable */
  GtkFileChooserNative *native; /* Otherwise this is set */
  GtkWidget *box;
  GtkWidget *button;
  GtkWidget *image;
  GtkWidget *label;
  GtkWidget *combo_box;
  GtkCellRenderer *icon_cell;
  GtkCellRenderer *name_cell;

  GtkTreeModel *model;
  GtkTreeModel *filter_model;

  GFile *selection_while_inactive;
  GFile *current_folder_while_inactive;

  GVolumeMonitor *volume_monitor;

  GCancellable *dnd_select_folder_cancellable;
  GCancellable *update_button_cancellable;
  GSList *change_icon_theme_cancellables;

  GtkBookmarksManager *bookmarks_manager;

  guint8 n_special;
  guint8 n_volumes;
  guint8 n_shortcuts;
  guint8 n_bookmarks;
  guint  has_bookmark_separator       : 1;
  guint  has_current_folder_separator : 1;
  guint  has_current_folder           : 1;
  guint  has_other_separator          : 1;

  /* Used for hiding/showing the dialog when the button is hidden */
  guint  active                       : 1;

  /* Whether the next async callback from GIO should emit the "selection-changed" signal */
  guint  is_changing_selection        : 1;
};

struct _GtkFileChooserButtonClass
{
  GtkWidgetClass parent_class;

  void (* file_set) (GtkFileChooserButton *fc);
};


/* ********************* *
 *  Function Prototypes  *
 * ********************* */

/* GtkFileChooserIface Functions */
static void     gtk_file_chooser_button_file_chooser_iface_init (GtkFileChooserIface *iface);
static gboolean gtk_file_chooser_button_set_current_folder (GtkFileChooser    *chooser,
                                                            GFile             *file,
                                                            GError           **error);
static GFile *gtk_file_chooser_button_get_current_folder (GtkFileChooser    *chooser);
static gboolean gtk_file_chooser_button_select_file (GtkFileChooser *chooser,
                                                     GFile          *file,
                                                     GError        **error);
static void gtk_file_chooser_button_unselect_file (GtkFileChooser *chooser,
                                                   GFile          *file);
static void gtk_file_chooser_button_unselect_all (GtkFileChooser *chooser);
static GListModel *gtk_file_chooser_button_get_files (GtkFileChooser *chooser);
static gboolean gtk_file_chooser_button_add_shortcut_folder     (GtkFileChooser      *chooser,
                                                                 GFile               *file,
                                                                 GError             **error);
static gboolean gtk_file_chooser_button_remove_shortcut_folder  (GtkFileChooser      *chooser,
                                                                 GFile               *file,
                                                                 GError             **error);

/* GObject Functions */
static void     gtk_file_chooser_button_constructed        (GObject          *object);
static void     gtk_file_chooser_button_dispose            (GObject          *object);
static void     gtk_file_chooser_button_set_property       (GObject          *object,
                                                            guint             param_id,
                                                            const GValue     *value,
                                                            GParamSpec       *pspec);
static void     gtk_file_chooser_button_get_property       (GObject          *object,
                                                            guint             param_id,
                                                            GValue           *value,
                                                            GParamSpec       *pspec);
static void     gtk_file_chooser_button_finalize           (GObject          *object);

/* GtkWidget Functions */
static void     gtk_file_chooser_button_show               (GtkWidget        *widget);
static void     gtk_file_chooser_button_hide               (GtkWidget        *widget);
static void     gtk_file_chooser_button_root               (GtkWidget *widget);
static void     gtk_file_chooser_button_map                (GtkWidget        *widget);
static gboolean gtk_file_chooser_button_mnemonic_activate  (GtkWidget        *widget,
                                                            gboolean          group_cycling);
static void     gtk_file_chooser_button_state_flags_changed     (GtkWidget       *widget,
                                                                 GtkStateFlags    previous_state);

/* Utility Functions */
static void          set_info_for_file_at_iter         (GtkFileChooserButton *button,
                                                        GFile                *file,
                                                        GtkTreeIter          *iter);

static int           model_get_type_position      (GtkFileChooserButton *button,
                                                   RowType               row_type);
static void          model_free_row_data          (GtkFileChooserButton *button,
                                                   GtkTreeIter          *iter);
static void          model_add_special            (GtkFileChooserButton *button);
static void          model_add_other              (GtkFileChooserButton *button);
static void          model_add_volumes            (GtkFileChooserButton *button,
                                                   GSList               *volumes);
static void          model_add_bookmarks          (GtkFileChooserButton *button,
                                                   GSList               *bookmarks);
static void          model_update_current_folder  (GtkFileChooserButton *button,
                                                   GFile                *file);
static void          model_remove_rows            (GtkFileChooserButton *button,
                                                   int                   pos,
                                                   int                   n_rows);

static gboolean      filter_model_visible_func    (GtkTreeModel         *model,
                                                   GtkTreeIter          *iter,
                                                   gpointer              user_data);

static gboolean      combo_box_row_separator_func (GtkTreeModel         *model,
                                                   GtkTreeIter          *iter,
                                                   gpointer              user_data);
static void          name_cell_data_func          (GtkCellLayout        *layout,
                                                   GtkCellRenderer      *cell,
                                                   GtkTreeModel         *model,
                                                   GtkTreeIter          *iter,
                                                   gpointer              user_data);
static void          open_dialog                  (GtkFileChooserButton *button);
static void          update_combo_box             (GtkFileChooserButton *button);
static void          update_label_and_image       (GtkFileChooserButton *button);

/* Child Object Callbacks */
static void     bookmarks_changed_cb             (gpointer        user_data);

static void     combo_box_changed_cb             (GtkComboBox    *combo_box,
                                                  gpointer        user_data);

static void     button_clicked_cb                (GtkButton      *real_button,
                                                  gpointer        user_data);

static void     dialog_response_cb               (GtkDialog      *dialog,
                                                  int             response,
                                                  gpointer        user_data);
static void     native_response_cb               (GtkFileChooserNative *native,
                                                  int             response,
                                                  gpointer        user_data);
static void     volumes_changed                  (GVolumeMonitor *volume_monitor,
                                                  gpointer        volume,
                                                  gpointer        user_data);
static GSList * get_volumes_list                 (GVolumeMonitor *volume_monitor);

static guint file_chooser_button_signals[LAST_SIGNAL] = { 0 };

/* ******************* *
 *  GType Declaration  *
 * ******************* */

G_DEFINE_TYPE_WITH_CODE (GtkFileChooserButton, gtk_file_chooser_button, GTK_TYPE_WIDGET,
                         G_IMPLEMENT_INTERFACE (GTK_TYPE_FILE_CHOOSER,
                                                gtk_file_chooser_button_file_chooser_iface_init))

struct DndSelectFolderData
{
  GtkFileChooserButton *button;
  GtkFileChooserAction action;
  GCancellable *cancellable;
  GFile *file;
  char **uris;
  guint i;
  gboolean selected;
};

static void
dnd_select_folder_get_info_cb (GObject      *object,
                               GAsyncResult *result,
                               gpointer      user_data)
{
  GFile *file = G_FILE (object);
  struct DndSelectFolderData *data = user_data;
  GFileInfo *info;
  GtkFileChooserButton *button = data->button;

  if (g_cancellable_is_cancelled (data->cancellable))
    {
      g_object_unref (data->button);
      g_object_unref (data->file);
      g_object_unref (data->cancellable);
      g_strfreev (data->uris);
      g_free (data);
      return;
    }

  button->dnd_select_folder_cancellable = NULL;

  info = g_file_query_info_finish (file, result, NULL);
  if (info)
    {
      gboolean is_folder;

      is_folder = _gtk_file_info_consider_as_directory (info);

      data->selected =
        (((data->action == GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER && is_folder) ||
          (data->action == GTK_FILE_CHOOSER_ACTION_OPEN && !is_folder)) &&
         gtk_file_chooser_select_file (GTK_FILE_CHOOSER (data->button), data->file, NULL));
    }
  else
    data->selected = FALSE;

  g_clear_object (&info);

  if (data->selected || data->uris[++data->i] == NULL)
    {
      g_signal_emit (data->button, file_chooser_button_signals[FILE_SET], 0);

      g_object_unref (data->button);
      g_object_unref (data->file);
      g_object_unref (data->cancellable);
      g_strfreev (data->uris);
      g_free (data);

      return;
    }

  if (data->file)
    g_object_unref (data->file);

  data->file = g_file_new_for_uri (data->uris[data->i]);

  g_clear_object (&data->cancellable);
  data->cancellable = g_cancellable_new ();
  button->dnd_select_folder_cancellable = data->cancellable;

  g_file_query_info_async (data->file,
                           "standard::type",
                           G_FILE_QUERY_INFO_NONE,
                           G_PRIORITY_DEFAULT,
                           data->cancellable,
                           dnd_select_folder_get_info_cb,
                           user_data);
}

static gboolean
gtk_file_chooser_button_drop (GtkDropTarget        *target,
                              const GValue         *value,
                              double                x,
                              double                y,
                              GtkFileChooserButton *button)
{
  struct DndSelectFolderData *info;
  GFile *file;

  file = g_value_get_object (value);

  info = g_new0 (struct DndSelectFolderData, 1);
  info->button = g_object_ref (button);
  info->i = 0;
  info->uris = g_new0 (char *, 2);
  info->selected = FALSE;
  g_object_get (button->chooser, "action", &info->action, NULL);

  info->file = g_object_ref (file);

  g_clear_pointer (&button->dnd_select_folder_cancellable, g_cancellable_cancel);

  info->cancellable = g_cancellable_new ();
  button->dnd_select_folder_cancellable = info->cancellable;
  g_file_query_info_async (info->file,
                           "standard::type",
                           G_FILE_QUERY_INFO_NONE,
                           G_PRIORITY_DEFAULT,
                           info->cancellable,
                           dnd_select_folder_get_info_cb,
                           info);

  return TRUE;
}

static void
gtk_file_chooser_button_class_init (GtkFileChooserButtonClass * class)
{
  GObjectClass *gobject_class;
  GtkWidgetClass *widget_class;

  gobject_class = G_OBJECT_CLASS (class);
  widget_class = GTK_WIDGET_CLASS (class);

  gobject_class->constructed = gtk_file_chooser_button_constructed;
  gobject_class->set_property = gtk_file_chooser_button_set_property;
  gobject_class->get_property = gtk_file_chooser_button_get_property;
  gobject_class->finalize = gtk_file_chooser_button_finalize;
  gobject_class->dispose = gtk_file_chooser_button_dispose;

  widget_class->show = gtk_file_chooser_button_show;
  widget_class->hide = gtk_file_chooser_button_hide;
  widget_class->map = gtk_file_chooser_button_map;
  widget_class->root = gtk_file_chooser_button_root;
  widget_class->mnemonic_activate = gtk_file_chooser_button_mnemonic_activate;
  widget_class->state_flags_changed = gtk_file_chooser_button_state_flags_changed;
  widget_class->grab_focus = gtk_widget_grab_focus_child;
  widget_class->focus = gtk_widget_focus_child;

  /**
   * GtkFileChooserButton::file-set:
   * @widget: the object which received the signal.
   *
   * The ::file-set signal is emitted when the user selects a file.
   *
   * Note that this signal is only emitted when the user
   * changes the file.
   */
  file_chooser_button_signals[FILE_SET] =
    g_signal_new (I_("file-set"),
                  G_TYPE_FROM_CLASS (gobject_class),
                  G_SIGNAL_RUN_FIRST,
                  G_STRUCT_OFFSET (GtkFileChooserButtonClass, file_set),
                  NULL, NULL,
                  NULL,
                  G_TYPE_NONE, 0);

  /**
   * GtkFileChooserButton:dialog:
   *
   * Instance of the #GtkFileChooserDialog associated with the button.
   */
  g_object_class_install_property (gobject_class, PROP_DIALOG,
                                   g_param_spec_object ("dialog",
                                                        P_("Dialog"),
                                                        P_("The file chooser dialog to use."),
                                                        GTK_TYPE_FILE_CHOOSER,
                                                        (GTK_PARAM_WRITABLE |
                                                         G_PARAM_CONSTRUCT_ONLY)));

  /**
   * GtkFileChooserButton:title:
   *
   * Title to put on the #GtkFileChooserDialog associated with the button.
   */
  g_object_class_install_property (gobject_class, PROP_TITLE,
                                   g_param_spec_string ("title",
                                                        P_("Title"),
                                                        P_("The title of the file chooser dialog."),
                                                        _(DEFAULT_TITLE),
                                                        GTK_PARAM_READWRITE));

  /**
   * GtkFileChooserButton:width-chars:
   *
   * The width of the entry and label inside the button, in characters.
   */
  g_object_class_install_property (gobject_class, PROP_WIDTH_CHARS,
                                   g_param_spec_int ("width-chars",
                                                     P_("Width In Characters"),
                                                     P_("The desired width of the button widget, in characters."),
                                                     -1, G_MAXINT, -1,
                                                     GTK_PARAM_READWRITE));

  g_object_class_install_property (gobject_class, PROP_MODAL,
                                   g_param_spec_boolean ("modal",
                                                         P_("Modal"),
                                                         P_("Whether to make the dialog modal"),
                                                         TRUE,
                                                         GTK_PARAM_READWRITE));

  _gtk_file_chooser_install_properties (gobject_class);

  gtk_widget_class_set_css_name (widget_class, I_("filechooserbutton"));

  gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
}

static void
gtk_file_chooser_button_init (GtkFileChooserButton *button)
{
  GtkWidget *box;
  GtkWidget *icon;
  GtkDropTarget *target;

  button->button = gtk_button_new ();
  g_signal_connect (button->button, "clicked", G_CALLBACK (button_clicked_cb), button);
  button->image = gtk_image_new ();
  button->label = gtk_label_new (_(FALLBACK_DISPLAY_NAME));
  gtk_label_set_xalign (GTK_LABEL (button->label), 0.0f);
  gtk_widget_set_hexpand (button->label, TRUE);
  icon = gtk_image_new_from_icon_name ("document-open-symbolic");
  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
  gtk_widget_set_valign (button->image, GTK_ALIGN_BASELINE);
  gtk_box_append (GTK_BOX (box), button->image);
  gtk_widget_set_valign (button->label, GTK_ALIGN_BASELINE);
  gtk_box_append (GTK_BOX (box), button->label);
  gtk_widget_set_valign (icon, GTK_ALIGN_BASELINE);
  gtk_box_append (GTK_BOX (box), icon);
  gtk_button_set_child (GTK_BUTTON (button->button), box);

  gtk_widget_set_parent (button->button, GTK_WIDGET (button));

  button->model = GTK_TREE_MODEL (gtk_list_store_new (NUM_COLUMNS,
                                                      G_TYPE_ICON,
                                                      G_TYPE_STRING,
                                                      G_TYPE_CHAR,
                                                      G_TYPE_POINTER,
                                                      G_TYPE_BOOLEAN,
                                                      G_TYPE_POINTER));

  button->combo_box = gtk_combo_box_new ();
  g_signal_connect (button->combo_box, "changed", G_CALLBACK (combo_box_changed_cb), button);
  button->icon_cell = gtk_cell_renderer_pixbuf_new ();
  button->name_cell = gtk_cell_renderer_text_new ();
  g_object_set (button->name_cell, "xpad", 6, NULL);

  gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (button->combo_box), button->icon_cell, FALSE);
  gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (button->combo_box),
                                  button->icon_cell, "gicon", ICON_COLUMN, NULL);

  gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (button->combo_box), button->name_cell, FALSE);
  gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (button->combo_box),
                                  button->name_cell, "text", DISPLAY_NAME_COLUMN, NULL);

  gtk_widget_hide (button->combo_box);
  gtk_widget_set_parent (button->combo_box, GTK_WIDGET (button));

  /* Bookmarks manager */
  button->bookmarks_manager = _gtk_bookmarks_manager_new (bookmarks_changed_cb, button);
  gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (button->combo_box),
                                      button->name_cell, name_cell_data_func,
                                      NULL, NULL);

  /* DnD */
  target = gtk_drop_target_new (G_TYPE_FILE, GDK_ACTION_COPY);
  g_signal_connect (target, "drop", G_CALLBACK (gtk_file_chooser_button_drop), button);
  gtk_widget_add_controller (GTK_WIDGET (button), GTK_EVENT_CONTROLLER (target));
}


/* ******************************* *
 *  GtkFileChooserIface Functions  *
 * ******************************* */
static void
gtk_file_chooser_button_file_chooser_iface_init (GtkFileChooserIface *iface)
{
  _gtk_file_chooser_delegate_iface_init (iface);

  iface->set_current_folder = gtk_file_chooser_button_set_current_folder;
  iface->get_current_folder = gtk_file_chooser_button_get_current_folder;
  iface->select_file = gtk_file_chooser_button_select_file;
  iface->unselect_file = gtk_file_chooser_button_unselect_file;
  iface->unselect_all = gtk_file_chooser_button_unselect_all;
  iface->get_files = gtk_file_chooser_button_get_files;
  iface->add_shortcut_folder = gtk_file_chooser_button_add_shortcut_folder;
  iface->remove_shortcut_folder = gtk_file_chooser_button_remove_shortcut_folder;
}

static void
emit_selection_changed_if_changing_selection (GtkFileChooserButton *button)
{
  if (button->is_changing_selection)
    {
      button->is_changing_selection = FALSE;
    }
}

static gboolean
gtk_file_chooser_button_set_current_folder (GtkFileChooser    *chooser,
                                            GFile             *file,
                                            GError           **error)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (chooser);

  if (button->current_folder_while_inactive)
    g_object_unref (button->current_folder_while_inactive);

  button->current_folder_while_inactive = g_object_ref (file);

  update_combo_box (button);

  if (button->active)
    gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (button->chooser), file, NULL);

  return TRUE;
}

static GFile *
gtk_file_chooser_button_get_current_folder (GtkFileChooser *chooser)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (chooser);

  if (button->current_folder_while_inactive)
    return g_object_ref (button->current_folder_while_inactive);
  else
    return NULL;
}

static gboolean
gtk_file_chooser_button_select_file (GtkFileChooser *chooser,
                                     GFile          *file,
                                     GError        **error)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (chooser);

  if (button->selection_while_inactive)
    g_object_unref (button->selection_while_inactive);

  button->selection_while_inactive = g_object_ref (file);

  button->is_changing_selection = TRUE;

  update_label_and_image (button);
  update_combo_box (button);

  if (button->active)
    gtk_file_chooser_select_file (GTK_FILE_CHOOSER (button->chooser), file, NULL);

  return TRUE;
}

static void
unselect_current_file (GtkFileChooserButton *button)
{
  if (button->selection_while_inactive)
    {
      g_object_unref (button->selection_while_inactive);
      button->selection_while_inactive = NULL;
    }

  button->is_changing_selection = TRUE;

  update_label_and_image (button);
  update_combo_box (button);
}

static void
gtk_file_chooser_button_unselect_file (GtkFileChooser *chooser,
                                       GFile          *file)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (chooser);

  if (g_file_equal (button->selection_while_inactive, file))
    unselect_current_file (button);

  if (button->active)
    gtk_file_chooser_unselect_file (GTK_FILE_CHOOSER (button->chooser), file);
}

static void
gtk_file_chooser_button_unselect_all (GtkFileChooser *chooser)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (chooser);

  unselect_current_file (button);

  if (button->active)
    gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER (button->chooser));
}

static GFile *
get_selected_file (GtkFileChooserButton *button)
{
  GFile *retval;

  retval = NULL;

  if (button->selection_while_inactive)
    retval = button->selection_while_inactive;
  else if (button->chooser && gtk_file_chooser_get_action (button->chooser) == GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER)
    {
      /* If there is no "real" selection in SELECT_FOLDER mode, then we'll just return
       * the current folder, since that is what GtkFileChooserWidget would do.
       */
      if (button->current_folder_while_inactive)
        retval = button->current_folder_while_inactive;
    }

  if (retval)
    return g_object_ref (retval);
  else
    return NULL;
}

static GListModel *
gtk_file_chooser_button_get_files (GtkFileChooser *chooser)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (chooser);
  GFile *file;
  GListStore *store;

  store = g_list_store_new (G_TYPE_FILE);

  file = get_selected_file (button);
  if (file)
    {
      g_list_store_append (store, file);
      g_object_unref (file);
    }

  return G_LIST_MODEL (store);
}

static gboolean
gtk_file_chooser_button_add_shortcut_folder (GtkFileChooser  *chooser,
                                             GFile           *file,
                                             GError         **error)
{
  GtkFileChooser *delegate;
  gboolean retval;

  delegate = g_object_get_qdata (G_OBJECT (chooser),
                                 GTK_FILE_CHOOSER_DELEGATE_QUARK);
  retval = gtk_file_chooser_add_shortcut_folder (delegate, file, error);

  if (retval)
    {
      GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (chooser);
      GtkTreeIter iter;
      int pos;

      pos = model_get_type_position (button, ROW_TYPE_SHORTCUT);
      pos += button->n_shortcuts;

      gtk_list_store_insert (GTK_LIST_STORE (button->model), &iter, pos);
      gtk_list_store_set (GTK_LIST_STORE (button->model), &iter,
                          ICON_COLUMN, NULL,
                          DISPLAY_NAME_COLUMN, _(FALLBACK_DISPLAY_NAME),
                          TYPE_COLUMN, ROW_TYPE_SHORTCUT,
                          DATA_COLUMN, g_object_ref (file),
                          IS_FOLDER_COLUMN, FALSE,
                          -1);
      set_info_for_file_at_iter (button, file, &iter);
      button->n_shortcuts++;

      gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (button->filter_model));
    }

  return retval;
}

static gboolean
gtk_file_chooser_button_remove_shortcut_folder (GtkFileChooser  *chooser,
                                                GFile           *file,
                                                GError         **error)
{
  GtkFileChooser *delegate;
  gboolean retval;

  delegate = g_object_get_qdata (G_OBJECT (chooser),
                                 GTK_FILE_CHOOSER_DELEGATE_QUARK);

  retval = gtk_file_chooser_remove_shortcut_folder (delegate, file, error);

  if (retval)
    {
      GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (chooser);
      GtkTreeIter iter;
      int pos;
      char type;

      pos = model_get_type_position (button, ROW_TYPE_SHORTCUT);
      gtk_tree_model_iter_nth_child (button->model, &iter, NULL, pos);

      do
        {
          gpointer data;

          gtk_tree_model_get (button->model, &iter,
                              TYPE_COLUMN, &type,
                              DATA_COLUMN, &data,
                              -1);

          if (type == ROW_TYPE_SHORTCUT &&
              data && g_file_equal (data, file))
            {
              model_free_row_data (GTK_FILE_CHOOSER_BUTTON (chooser), &iter);
              gtk_list_store_remove (GTK_LIST_STORE (button->model), &iter);
              button->n_shortcuts--;
              gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (button->filter_model));
              update_combo_box (GTK_FILE_CHOOSER_BUTTON (chooser));
              break;
            }
        }
      while (type == ROW_TYPE_SHORTCUT &&
             gtk_tree_model_iter_next (button->model, &iter));
    }

  return retval;
}


/* ******************* *
 *  GObject Functions  *
 * ******************* */

static void
gtk_file_chooser_button_constructed (GObject *object)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (object);
  GSList *list;

  G_OBJECT_CLASS (gtk_file_chooser_button_parent_class)->constructed (object);

  if (!button->dialog)
    {
      button->native = gtk_file_chooser_native_new (NULL,
                                                    NULL,
                                                    GTK_FILE_CHOOSER_ACTION_OPEN,
                                                    NULL,
                                                    NULL);
      button->chooser = GTK_FILE_CHOOSER (button->native);
      gtk_file_chooser_button_set_title (button, _(DEFAULT_TITLE));
      gtk_native_dialog_set_modal (GTK_NATIVE_DIALOG (button->native), TRUE);

      g_signal_connect (button->native, "response",
                        G_CALLBACK (native_response_cb), object);
    }
  else /* dialog set */
    {
      button->chooser = GTK_FILE_CHOOSER (button->dialog);
      gtk_window_set_hide_on_close (GTK_WINDOW (button->chooser), TRUE);

      if (!gtk_window_get_title (GTK_WINDOW (button->dialog)))
        gtk_file_chooser_button_set_title (button, _(DEFAULT_TITLE));

      g_signal_connect (button->dialog, "response",
                        G_CALLBACK (dialog_response_cb), object);

      g_object_add_weak_pointer (G_OBJECT (button->dialog),
                                 (gpointer) (&button->dialog));
    }

  /* This is used, instead of the standard delegate, to ensure that signals are only
   * delegated when the OK button is pressed. */
  g_object_set_qdata (object, GTK_FILE_CHOOSER_DELEGATE_QUARK, button->chooser);

  model_add_special (button);

  button->volume_monitor = g_volume_monitor_get ();
  g_signal_connect (button->volume_monitor, "mount-added",
                    G_CALLBACK (volumes_changed), button);
  g_signal_connect (button->volume_monitor, "mount-removed",
                    G_CALLBACK (volumes_changed), button);
  g_signal_connect (button->volume_monitor, "mount-changed",
                    G_CALLBACK (volumes_changed), button);
  g_signal_connect (button->volume_monitor, "volume-added",
                    G_CALLBACK (volumes_changed), button);
  g_signal_connect (button->volume_monitor, "volume-removed",
                    G_CALLBACK (volumes_changed), button);
  g_signal_connect (button->volume_monitor, "volume-changed",
                    G_CALLBACK (volumes_changed), button);
  g_signal_connect (button->volume_monitor, "drive-connected",
                    G_CALLBACK (volumes_changed), button);
  g_signal_connect (button->volume_monitor, "drive-disconnected",
                    G_CALLBACK (volumes_changed), button);
  g_signal_connect (button->volume_monitor, "drive-changed",
                    G_CALLBACK (volumes_changed), button);

  list = get_volumes_list (button->volume_monitor);
  model_add_volumes (button, list);
  g_slist_free_full (list, g_object_unref);

  list = _gtk_bookmarks_manager_list_bookmarks (button->bookmarks_manager);
  model_add_bookmarks (button, list);
  g_slist_free_full (list, g_object_unref);

  model_add_other (button);

  button->filter_model = gtk_tree_model_filter_new (button->model, NULL);
  gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (button->filter_model),
                                          filter_model_visible_func,
                                          object, NULL);

  gtk_combo_box_set_model (GTK_COMBO_BOX (button->combo_box), button->filter_model);
  gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (button->combo_box),
                                        combo_box_row_separator_func,
                                        NULL, NULL);

  /* set up the action for a user-provided dialog, this also updates
   * the label, image and combobox
   */
  g_object_set (object,
                "action", gtk_file_chooser_get_action (GTK_FILE_CHOOSER (button->chooser)),
                NULL);

  update_label_and_image (button);
  update_combo_box (button);
}

static void
gtk_file_chooser_button_set_property (GObject      *object,
                                      guint         param_id,
                                      const GValue *value,
                                      GParamSpec   *pspec)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (object);

  switch (param_id)
    {
    case PROP_DIALOG:
      /* Construct-only */
      button->dialog = g_value_get_object (value);
      break;
    case PROP_WIDTH_CHARS:
      gtk_file_chooser_button_set_width_chars (GTK_FILE_CHOOSER_BUTTON (object),
                                               g_value_get_int (value));
      break;
    case GTK_FILE_CHOOSER_PROP_ACTION:
      switch (g_value_get_enum (value))
        {
        case GTK_FILE_CHOOSER_ACTION_SAVE:
          {
            GEnumClass *eclass;
            GEnumValue *eval;

            eclass = g_type_class_peek (GTK_TYPE_FILE_CHOOSER_ACTION);
            eval = g_enum_get_value (eclass, g_value_get_enum (value));
            g_warning ("%s: Choosers of type '%s' do not support '%s'.",
                       G_STRFUNC, G_OBJECT_TYPE_NAME (object), eval->value_name);

            g_value_set_enum ((GValue *) value, GTK_FILE_CHOOSER_ACTION_OPEN);
          }
          break;
        default:
          break;
        }

      g_object_set_property (G_OBJECT (button->chooser), pspec->name, value);
      update_label_and_image (GTK_FILE_CHOOSER_BUTTON (object));
      update_combo_box (GTK_FILE_CHOOSER_BUTTON (object));

      switch (g_value_get_enum (value))
        {
        case GTK_FILE_CHOOSER_ACTION_OPEN:
          gtk_widget_hide (button->combo_box);
          gtk_widget_show (button->button);
          gtk_widget_queue_resize (GTK_WIDGET (button));
          break;
        case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
          gtk_widget_show (button->combo_box);
          gtk_widget_hide (button->button);
          gtk_widget_queue_resize (GTK_WIDGET (button));
          break;
        default:
          g_assert_not_reached ();
          break;
        }
      break;

    case PROP_TITLE:
    case PROP_MODAL:
    case GTK_FILE_CHOOSER_PROP_FILTER:
    case GTK_FILE_CHOOSER_PROP_CREATE_FOLDERS:
      g_object_set_property (G_OBJECT (button->chooser), pspec->name, value);
      break;

    case GTK_FILE_CHOOSER_PROP_SELECT_MULTIPLE:
      g_warning ("%s: Choosers of type '%s' do not support selecting multiple files.",
                 G_STRFUNC, G_OBJECT_TYPE_NAME (object));
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
      break;
    }
}

static void
gtk_file_chooser_button_get_property (GObject    *object,
                                      guint       param_id,
                                      GValue     *value,
                                      GParamSpec *pspec)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (object);

  switch (param_id)
    {
    case PROP_WIDTH_CHARS:
      g_value_set_int (value,
                       gtk_label_get_width_chars (GTK_LABEL (button->label)));
      break;

    case PROP_TITLE:
    case PROP_MODAL:
    case GTK_FILE_CHOOSER_PROP_ACTION:
    case GTK_FILE_CHOOSER_PROP_FILTER:
    case GTK_FILE_CHOOSER_PROP_SELECT_MULTIPLE:
    case GTK_FILE_CHOOSER_PROP_CREATE_FOLDERS:
    case GTK_FILE_CHOOSER_PROP_FILTERS:
    case GTK_FILE_CHOOSER_PROP_SHORTCUT_FOLDERS:
      g_object_get_property (G_OBJECT (button->chooser), pspec->name, value);
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
      break;
    }
}

static void
gtk_file_chooser_button_finalize (GObject *object)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (object);

  g_clear_object (&button->selection_while_inactive);
  g_clear_object (&button->current_folder_while_inactive);

  gtk_widget_unparent (button->button);
  gtk_widget_unparent (button->combo_box);

  G_OBJECT_CLASS (gtk_file_chooser_button_parent_class)->finalize (object);
}

/* ********************* *
 *  GtkWidget Functions  *
 * ********************* */

static void
gtk_file_chooser_button_state_flags_changed (GtkWidget     *widget,
                                             GtkStateFlags  previous_state)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (widget);

  if (gtk_widget_get_state_flags (widget) & GTK_STATE_FLAG_DROP_ACTIVE)
    {
      gtk_widget_set_state_flags (button->button, GTK_STATE_FLAG_DROP_ACTIVE, FALSE);
      gtk_widget_set_state_flags (button->combo_box, GTK_STATE_FLAG_DROP_ACTIVE, FALSE);
    }
  else
    {
      gtk_widget_unset_state_flags (button->button, GTK_STATE_FLAG_DROP_ACTIVE);
      gtk_widget_unset_state_flags (button->combo_box, GTK_STATE_FLAG_DROP_ACTIVE);
    }

  GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->state_flags_changed (widget, previous_state);
}

static void
gtk_file_chooser_button_dispose (GObject *object)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (object);

  if (button->model)
    {
      model_remove_rows (button, 0, gtk_tree_model_iter_n_children (button->model, NULL));
      g_clear_object (&button->model);
    }

  g_clear_pointer ((GtkWindow **)&button->dialog, gtk_window_destroy);

  if (button->native)
    gtk_native_dialog_destroy (GTK_NATIVE_DIALOG (button->native));

  g_clear_object (&button->native);
  button->chooser = NULL; /* Was either button->dialog or button->native! */

  g_clear_pointer (&button->dnd_select_folder_cancellable, g_cancellable_cancel);
  g_clear_pointer (&button->update_button_cancellable, g_cancellable_cancel);

  g_slist_free_full (button->change_icon_theme_cancellables, (GDestroyNotify)g_cancellable_cancel);
  button->change_icon_theme_cancellables = NULL;

  g_clear_object (&button->filter_model);

  if (button->volume_monitor)
    g_signal_handlers_disconnect_by_func (button->volume_monitor, volumes_changed, button);
  g_clear_object (&button->volume_monitor);

  g_clear_pointer (&button->bookmarks_manager, _gtk_bookmarks_manager_free);

  G_OBJECT_CLASS (gtk_file_chooser_button_parent_class)->dispose (object);
}

static void
gtk_file_chooser_button_show (GtkWidget *widget)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (widget);

  if (GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->show)
    GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->show (widget);

  if (button->active)
    open_dialog (GTK_FILE_CHOOSER_BUTTON (widget));
}

static void
gtk_file_chooser_button_hide (GtkWidget *widget)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (widget);

  if (button->dialog)
    gtk_widget_hide (button->dialog);
  else if (button->native)
    gtk_native_dialog_hide (GTK_NATIVE_DIALOG (button->native));

  if (GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->hide)
    GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->hide (widget);
}

static void
gtk_file_chooser_button_map (GtkWidget *widget)
{
  GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->map (widget);
}

static gboolean
gtk_file_chooser_button_mnemonic_activate (GtkWidget *widget,
                                           gboolean   group_cycling)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (widget);

  switch (gtk_file_chooser_get_action (GTK_FILE_CHOOSER (button->chooser)))
    {
    case GTK_FILE_CHOOSER_ACTION_OPEN:
      gtk_widget_grab_focus (button->button);
      break;
    case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
      return gtk_widget_mnemonic_activate (button->combo_box, group_cycling);
      break;
    case GTK_FILE_CHOOSER_ACTION_SAVE:
    default:
      g_assert_not_reached ();
      break;
    }

  return TRUE;
}

/* Changes the icons wherever it is needed */
struct ChangeIconThemeData
{
  GtkFileChooserButton *button;
  GtkTreeRowReference *row_ref;
  GCancellable *cancellable;
};

static void
change_icon_theme_get_info_cb (GObject      *source,
                               GAsyncResult *result,
                               gpointer      user_data)
{
  GFile *file = G_FILE (source);
  struct ChangeIconThemeData *data = user_data;
  GFileInfo *info;
  GIcon *icon;
  GtkFileChooserButton *button = data->button;

  if (g_cancellable_is_cancelled (data->cancellable))
    {
      g_object_unref (data->button);
      g_object_unref (data->cancellable);
      gtk_tree_row_reference_free (data->row_ref);
      g_free (data);
      return;
    }

  button->change_icon_theme_cancellables =
    g_slist_remove (button->change_icon_theme_cancellables, data->cancellable);

  info = g_file_query_info_finish (file, result, NULL);
  if (!info)
    goto out;

  icon = _gtk_file_info_get_icon (info, ICON_SIZE, gtk_widget_get_scale_factor (GTK_WIDGET (data->button)));
  if (icon)
    {
      int width = 0;
      GtkTreeIter iter;
      GtkTreePath *path;

      width = MAX (width, ICON_SIZE);

      path = gtk_tree_row_reference_get_path (data->row_ref);
      if (path)
        {
          gtk_tree_model_get_iter (button->model, &iter, path);
          gtk_tree_path_free (path);

          gtk_list_store_set (GTK_LIST_STORE (button->model), &iter,
                              ICON_COLUMN, icon,
                              -1);

          g_object_set (button->icon_cell,
                        "width", width,
                        NULL);
        }
      g_object_unref (icon);
    }

out:
  g_object_unref (data->button);
  g_object_unref (data->cancellable);
  gtk_tree_row_reference_free (data->row_ref);
  g_free (data);

  g_clear_object (&info);
}

static void
change_icon_theme (GtkFileChooserButton *button)
{
  GtkTreeIter iter;
  int width = 0;

  g_slist_free_full (button->change_icon_theme_cancellables, (GDestroyNotify)g_cancellable_cancel);
  button->change_icon_theme_cancellables = NULL;

  update_label_and_image (button);

  gtk_tree_model_get_iter_first (button->model, &iter);

  do
    {
      GIcon *icon = NULL;
      char type;
      gpointer data;

      type = ROW_TYPE_INVALID;
      gtk_tree_model_get (button->model, &iter,
                          TYPE_COLUMN, &type,
                          DATA_COLUMN, &data,
                          -1);

      switch (type)
        {
        case ROW_TYPE_SPECIAL:
        case ROW_TYPE_SHORTCUT:
        case ROW_TYPE_BOOKMARK:
        case ROW_TYPE_CURRENT_FOLDER:
          if (data)
            {
              if (g_file_is_native (G_FILE (data)))
                {
                  GtkTreePath *path;
                  struct ChangeIconThemeData *info;

                  info = g_new0 (struct ChangeIconThemeData, 1);
                  info->button = g_object_ref (button);
                  path = gtk_tree_model_get_path (button->model, &iter);
                  info->row_ref = gtk_tree_row_reference_new (button->model, path);
                  gtk_tree_path_free (path);

                  info->cancellable = g_cancellable_new ();
                  g_file_query_info_async (data,
                                           "standard::icon",
                                           G_FILE_QUERY_INFO_NONE,
                                           G_PRIORITY_DEFAULT,
                                           info->cancellable,
                                           change_icon_theme_get_info_cb,
                                           info);

                  button->change_icon_theme_cancellables =
                    g_slist_append (button->change_icon_theme_cancellables, info->cancellable);
                  icon = NULL;
                }
              else
                {
                  /* Don't call get_info for remote paths to avoid latency and
                   * auth dialogs.
                   * If we switch to a better bookmarks file format (XBEL), we
                   * should use mime info to get a better icon.
                   */
                  icon = g_themed_icon_new ("folder-remote");
                }
            }
          break;
        case ROW_TYPE_VOLUME:
          if (G_IS_DRIVE (data))
            icon = g_drive_get_icon (G_DRIVE (data));
          else if (G_IS_VOLUME (data))
            icon = g_volume_get_icon (G_VOLUME (data));
          else if (G_IS_MOUNT (data))
            icon = g_mount_get_icon (G_MOUNT (data));
          else
            icon = NULL;
          break;
        default:
          continue;
          break;
        }

      if (icon)
        width = MAX (width, ICON_SIZE);

      gtk_list_store_set (GTK_LIST_STORE (button->model), &iter,
                          ICON_COLUMN, icon,
                          -1);

      if (icon)
        g_object_unref (icon);
    }
  while (gtk_tree_model_iter_next (button->model, &iter));

  g_object_set (button->icon_cell,
                "width", width,
                NULL);
}

static void
gtk_file_chooser_button_root (GtkWidget *widget)
{
  GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->root (widget);

  change_icon_theme (GTK_FILE_CHOOSER_BUTTON (widget));
}

/* ******************* *
 *  Utility Functions  *
 * ******************* */

/* General */

struct SetDisplayNameData
{
  GtkFileChooserButton *button;
  char *label;
  GtkTreeRowReference *row_ref;
};

static void
set_info_get_info_cb (GObject      *source,
                      GAsyncResult *result,
                      gpointer      callback_data)
{
  GFile *file = G_FILE (source);
  struct SetDisplayNameData *data = callback_data;
  GFileInfo *info = NULL;
  GIcon *icon;
  GtkTreePath *path;
  GtkTreeIter iter;
  GCancellable *model_cancellable = NULL;
  GtkFileChooserButton *button = data->button;
  gboolean is_folder;

  if (!button->model)
    /* button got destroyed */
    goto out;

  path = gtk_tree_row_reference_get_path (data->row_ref);
  if (!path)
    /* Cancellable doesn't exist anymore in the model */
    goto out;

  gtk_tree_model_get_iter (button->model, &iter, path);
  gtk_tree_path_free (path);

  /* Validate the cancellable */
  gtk_tree_model_get (button->model, &iter,
                      CANCELLABLE_COLUMN, &model_cancellable,
                      -1);

  gtk_list_store_set (GTK_LIST_STORE (button->model), &iter,
                      CANCELLABLE_COLUMN, NULL,
                      -1);

  info = g_file_query_info_finish (file, result, NULL);
  if (!info)
    goto out;

  icon = _gtk_file_info_get_icon (info, ICON_SIZE, gtk_widget_get_scale_factor (GTK_WIDGET (data->button)));

  if (!data->label)
    data->label = g_strdup (g_file_info_get_display_name (info));

  is_folder = _gtk_file_info_consider_as_directory (info);

  gtk_list_store_set (GTK_LIST_STORE (button->model), &iter,
                      ICON_COLUMN, icon,
                      DISPLAY_NAME_COLUMN, data->label,
                      IS_FOLDER_COLUMN, is_folder,
                      -1);

  if (icon)
    g_object_unref (icon);

out:
  g_object_unref (data->button);
  g_free (data->label);
  gtk_tree_row_reference_free (data->row_ref);
  g_free (data);

  g_clear_object (&info);
}

static void
set_info_for_file_at_iter (GtkFileChooserButton *button,
                           GFile                *file,
                           GtkTreeIter          *iter)
{
  struct SetDisplayNameData *data;
  GtkTreePath *tree_path;
  GCancellable *cancellable;

  data = g_new0 (struct SetDisplayNameData, 1);
  data->button = g_object_ref (button);
  data->label = _gtk_bookmarks_manager_get_bookmark_label (button->bookmarks_manager, file);

  tree_path = gtk_tree_model_get_path (button->model, iter);
  data->row_ref = gtk_tree_row_reference_new (button->model, tree_path);
  gtk_tree_path_free (tree_path);

  cancellable = g_cancellable_new ();
  g_file_query_info_async (file,
                           "standard::type,standard::icon,standard::display-name",
                           G_FILE_QUERY_INFO_NONE,
                           G_PRIORITY_DEFAULT,
                           cancellable,
                           set_info_get_info_cb,
                           data);

  gtk_list_store_set (GTK_LIST_STORE (button->model), iter,
                      CANCELLABLE_COLUMN, cancellable,
                      -1);
}

/* Shortcuts Model */
static int
model_get_type_position (GtkFileChooserButton *button,
                         RowType               row_type)
{
  int retval = 0;

  if (row_type == ROW_TYPE_SPECIAL)
    return retval;

  retval += button->n_special;

  if (row_type == ROW_TYPE_VOLUME)
    return retval;

  retval += button->n_volumes;

  if (row_type == ROW_TYPE_SHORTCUT)
    return retval;

  retval += button->n_shortcuts;

  if (row_type == ROW_TYPE_BOOKMARK_SEPARATOR)
    return retval;

  retval += button->has_bookmark_separator;

  if (row_type == ROW_TYPE_BOOKMARK)
    return retval;

  retval += button->n_bookmarks;

  if (row_type == ROW_TYPE_CURRENT_FOLDER_SEPARATOR)
    return retval;

  retval += button->has_current_folder_separator;

  if (row_type == ROW_TYPE_CURRENT_FOLDER)
    return retval;

  retval += button->has_current_folder;

  if (row_type == ROW_TYPE_OTHER_SEPARATOR)
    return retval;

  retval += button->has_other_separator;

  if (row_type == ROW_TYPE_OTHER)
    return retval;

  retval++;

  g_assert_not_reached ();
  return -1;
}

static void
model_free_row_data (GtkFileChooserButton *button,
                     GtkTreeIter          *iter)
{
  char type;
  gpointer data;
  GCancellable *cancellable;

  gtk_tree_model_get (button->model, iter,
                      TYPE_COLUMN, &type,
                      DATA_COLUMN, &data,
                      CANCELLABLE_COLUMN, &cancellable,
                      -1);

  if (cancellable)
    g_cancellable_cancel (cancellable);

  switch (type)
    {
    case ROW_TYPE_SPECIAL:
    case ROW_TYPE_SHORTCUT:
    case ROW_TYPE_BOOKMARK:
    case ROW_TYPE_CURRENT_FOLDER:
    case ROW_TYPE_VOLUME:
      g_object_unref (data);
      break;
    default:
      break;
    }
}

static void
model_add_special_get_info_cb (GObject      *source,
                               GAsyncResult *result,
                               gpointer      user_data)
{
  GFile *file = G_FILE (source);
  struct ChangeIconThemeData *data = user_data;
  GtkTreeIter iter;
  GtkTreePath *path;
  GIcon *icon;
  GCancellable *model_cancellable = NULL;
  GtkFileChooserButton *button = data->button;
  GFileInfo *info = NULL;
  char *name;

  if (!button->model)
    /* button got destroyed */
    goto out;

  path = gtk_tree_row_reference_get_path (data->row_ref);
  if (!path)
    /* Cancellable doesn't exist anymore in the model */
    goto out;

  gtk_tree_model_get_iter (button->model, &iter, path);
  gtk_tree_path_free (path);

  gtk_tree_model_get (button->model, &iter,
                      CANCELLABLE_COLUMN, &model_cancellable,
                      -1);

  gtk_list_store_set (GTK_LIST_STORE (button->model), &iter,
                      CANCELLABLE_COLUMN, NULL,
                      -1);

  info = g_file_query_info_finish (file, result, NULL);
  if (!info)
    goto out;

  icon = _gtk_file_info_get_icon (info, ICON_SIZE, gtk_widget_get_scale_factor (GTK_WIDGET (data->button)));
  if (icon)
    {
      gtk_list_store_set (GTK_LIST_STORE (button->model), &iter,
                          ICON_COLUMN, icon,
                          -1);
      g_object_unref (icon);
    }

  gtk_tree_model_get (button->model, &iter,
                      DISPLAY_NAME_COLUMN, &name,
                      -1);
  if (!name)
    gtk_list_store_set (GTK_LIST_STORE (button->model), &iter,
                        DISPLAY_NAME_COLUMN, g_file_info_get_display_name (info),
                        -1);
  g_free (name);

out:
  g_object_unref (data->button);
  gtk_tree_row_reference_free (data->row_ref);
  g_free (data);

  g_clear_object (&info);
}

static void
model_add_special (GtkFileChooserButton *button)
{
  const char *homedir;
  const char *desktopdir;
  GtkListStore *store;
  GtkTreeIter iter;
  GFile *file;
  int pos;

  store = GTK_LIST_STORE (button->model);
  pos = model_get_type_position (button, ROW_TYPE_SPECIAL);

  homedir = g_get_home_dir ();

  if (homedir)
    {
      GtkTreePath *tree_path;
      GCancellable *cancellable;
      struct ChangeIconThemeData *info;

      file = g_file_new_for_path (homedir);
      gtk_list_store_insert (store, &iter, pos);
      pos++;

      info = g_new0 (struct ChangeIconThemeData, 1);
      info->button = g_object_ref (button);
      tree_path = gtk_tree_model_get_path (GTK_TREE_MODEL (store), &iter);
      info->row_ref = gtk_tree_row_reference_new (GTK_TREE_MODEL (store),
                                                  tree_path);
      gtk_tree_path_free (tree_path);

      cancellable = g_cancellable_new ();
      g_file_query_info_async (file,
                               "standard::icon,standard::display-name",
                               G_FILE_QUERY_INFO_NONE,
                               G_PRIORITY_DEFAULT,
                               cancellable,
                               model_add_special_get_info_cb,
                               info);

      gtk_list_store_set (store, &iter,
                          ICON_COLUMN, NULL,
                          DISPLAY_NAME_COLUMN, NULL,
                          TYPE_COLUMN, ROW_TYPE_SPECIAL,
                          DATA_COLUMN, file,
                          IS_FOLDER_COLUMN, TRUE,
                          CANCELLABLE_COLUMN, cancellable,
                          -1);

      button->n_special++;
    }

  desktopdir = g_get_user_special_dir (G_USER_DIRECTORY_DESKTOP);

  /* "To disable a directory, point it to the homedir."
   * See http://freedesktop.org/wiki/Software/xdg-user-dirs
   */
  if (g_strcmp0 (desktopdir, g_get_home_dir ()) != 0)
    {
      GtkTreePath *tree_path;
      GCancellable *cancellable;
      struct ChangeIconThemeData *info;

      file = g_file_new_for_path (desktopdir);
      gtk_list_store_insert (store, &iter, pos);
      pos++;

      info = g_new0 (struct ChangeIconThemeData, 1);
      info->button = g_object_ref (button);
      tree_path = gtk_tree_model_get_path (GTK_TREE_MODEL (store), &iter);
      info->row_ref = gtk_tree_row_reference_new (GTK_TREE_MODEL (store),
                                                  tree_path);
      gtk_tree_path_free (tree_path);

      cancellable = g_cancellable_new ();
      g_file_query_info_async (file,
                               "standard::icon,standard::display-name",
                               G_FILE_QUERY_INFO_NONE,
                               G_PRIORITY_DEFAULT,
                               cancellable,
                               model_add_special_get_info_cb,
                               info);

      gtk_list_store_set (store, &iter,
                          TYPE_COLUMN, ROW_TYPE_SPECIAL,
                          ICON_COLUMN, NULL,
                          DISPLAY_NAME_COLUMN, _(DESKTOP_DISPLAY_NAME),
                          DATA_COLUMN, file,
                          IS_FOLDER_COLUMN, TRUE,
                          CANCELLABLE_COLUMN, cancellable,
                          -1);

      button->n_special++;
    }
}

static void
model_add_volumes (GtkFileChooserButton *button,
                   GSList               *volumes)
{
  GtkListStore *store;
  int pos;
  GSList *l;

  if (!volumes)
    return;

  store = GTK_LIST_STORE (button->model);
  pos = model_get_type_position (button, ROW_TYPE_VOLUME);

  for (l = volumes; l; l = l->next)
    {
      gpointer *volume;
      GtkTreeIter iter;
      GIcon *icon;
      char *display_name;

      volume = l->data;
      if (G_IS_DRIVE (volume))
        {
          icon = g_drive_get_icon (G_DRIVE (volume));
          display_name = g_drive_get_name (G_DRIVE (volume));
        }
      else if (G_IS_VOLUME (volume))
        {
          icon = g_volume_get_icon (G_VOLUME (volume));
          display_name = g_volume_get_name (G_VOLUME (volume));
        }
      else if (G_IS_MOUNT (volume))
        {
          icon = g_mount_get_icon (G_MOUNT (volume));
          display_name = g_mount_get_name (G_MOUNT (volume));
        }
      else
        {
          icon = NULL;
          display_name = NULL;
        }

      gtk_list_store_insert (store, &iter, pos);
      gtk_list_store_set (store, &iter,
                          ICON_COLUMN, icon,
                          DISPLAY_NAME_COLUMN, display_name,
                          TYPE_COLUMN, ROW_TYPE_VOLUME,
                          DATA_COLUMN, g_object_ref (volume),
                          IS_FOLDER_COLUMN, TRUE,
                          -1);

      g_clear_object (&icon);
      g_free (display_name);

      button->n_volumes++;
      pos++;
    }
}

static void
model_add_bookmarks (GtkFileChooserButton *button,
                     GSList               *bookmarks)
{
  GtkListStore *store;
  GtkTreeIter iter;
  int pos;
  GSList *l;

  if (!bookmarks)
    return;

  store = GTK_LIST_STORE (button->model);
  pos = model_get_type_position (button, ROW_TYPE_BOOKMARK);

  for (l = bookmarks; l; l = l->next)
    {
      GFile *file;

      file = l->data;

      if (_gtk_file_has_native_path (file))
        {
          gtk_list_store_insert (store, &iter, pos);
          gtk_list_store_set (store, &iter,
                              ICON_COLUMN, NULL,
                              DISPLAY_NAME_COLUMN, _(FALLBACK_DISPLAY_NAME),
                              TYPE_COLUMN, ROW_TYPE_BOOKMARK,
                              DATA_COLUMN, g_object_ref (file),
                              IS_FOLDER_COLUMN, FALSE,
                              -1);
          set_info_for_file_at_iter (button, file, &iter);
        }
      else
        {
          char *label;
          GIcon *icon;

          /* Don't call get_info for remote paths to avoid latency and
           * auth dialogs.
           * If we switch to a better bookmarks file format (XBEL), we
           * should use mime info to get a better icon.
           */
          label = _gtk_bookmarks_manager_get_bookmark_label (button->bookmarks_manager, file);
          if (!label)
            label = _gtk_file_chooser_label_for_file (file);

          icon = g_themed_icon_new ("folder-remote");

          gtk_list_store_insert (store, &iter, pos);
          gtk_list_store_set (store, &iter,
                              ICON_COLUMN, icon,
                              DISPLAY_NAME_COLUMN, label,
                              TYPE_COLUMN, ROW_TYPE_BOOKMARK,
                              DATA_COLUMN, g_object_ref (file),
                              IS_FOLDER_COLUMN, TRUE,
                              -1);

          g_free (label);
          if (icon)
            g_object_unref (icon);
        }

      button->n_bookmarks++;
      pos++;
    }

  if (button->n_bookmarks > 0 &&
      !button->has_bookmark_separator)
    {
      pos = model_get_type_position (button, ROW_TYPE_BOOKMARK_SEPARATOR);

      gtk_list_store_insert (store, &iter, pos);
      gtk_list_store_set (store, &iter,
                          ICON_COLUMN, NULL,
                          DISPLAY_NAME_COLUMN, NULL,
                          TYPE_COLUMN, ROW_TYPE_BOOKMARK_SEPARATOR,
                          DATA_COLUMN, NULL,
                          IS_FOLDER_COLUMN, FALSE,
                          -1);
      button->has_bookmark_separator = TRUE;
    }
}

static void
model_update_current_folder (GtkFileChooserButton *button,
                             GFile                *file)
{
  GtkListStore *store;
  GtkTreeIter iter;
  int pos;

  if (!file)
    return;

  store = GTK_LIST_STORE (button->model);

  if (!button->has_current_folder_separator)
    {
      pos = model_get_type_position (button, ROW_TYPE_CURRENT_FOLDER_SEPARATOR);
      gtk_list_store_insert (store, &iter, pos);
      gtk_list_store_set (store, &iter,
                          ICON_COLUMN, NULL,
                          DISPLAY_NAME_COLUMN, NULL,
                          TYPE_COLUMN, ROW_TYPE_CURRENT_FOLDER_SEPARATOR,
                          DATA_COLUMN, NULL,
                          IS_FOLDER_COLUMN, FALSE,
                          -1);
      button->has_current_folder_separator = TRUE;
    }

  pos = model_get_type_position (button, ROW_TYPE_CURRENT_FOLDER);
  if (!button->has_current_folder)
    {
      gtk_list_store_insert (store, &iter, pos);
      button->has_current_folder = TRUE;
    }
  else
    {
      gtk_tree_model_iter_nth_child (button->model, &iter, NULL, pos);
      model_free_row_data (button, &iter);
    }

  if (g_file_is_native (file))
    {
      gtk_list_store_set (store, &iter,
                          ICON_COLUMN, NULL,
                          DISPLAY_NAME_COLUMN, _(FALLBACK_DISPLAY_NAME),
                          TYPE_COLUMN, ROW_TYPE_CURRENT_FOLDER,
                          DATA_COLUMN, g_object_ref (file),
                          IS_FOLDER_COLUMN, FALSE,
                          -1);
      set_info_for_file_at_iter (button, file, &iter);
    }
  else
    {
      char *label;
      GIcon *icon;

      /* Don't call get_info for remote paths to avoid latency and
       * auth dialogs.
       * If we switch to a better bookmarks file format (XBEL), we
       * should use mime info to get a better icon.
       */
      label = _gtk_bookmarks_manager_get_bookmark_label (button->bookmarks_manager, file);
      if (!label)
        label = _gtk_file_chooser_label_for_file (file);

      if (g_file_is_native (file))
        icon = g_themed_icon_new ("folder");
      else
        icon = g_themed_icon_new ("folder-remote");

      gtk_list_store_set (store, &iter,
                          ICON_COLUMN, icon,
                          DISPLAY_NAME_COLUMN, label,
                          TYPE_COLUMN, ROW_TYPE_CURRENT_FOLDER,
                          DATA_COLUMN, g_object_ref (file),
                          IS_FOLDER_COLUMN, TRUE,
                          -1);

      g_free (label);
      if (icon)
        g_object_unref (icon);
    }
}

static void
model_add_other (GtkFileChooserButton *button)
{
  GtkListStore *store;
  GtkTreeIter iter;
  int pos;
  GIcon *icon;

  store = GTK_LIST_STORE (button->model);
  pos = model_get_type_position (button, ROW_TYPE_OTHER_SEPARATOR);
  icon = g_themed_icon_new ("document-open-symbolic");

  gtk_list_store_insert (store, &iter, pos);
  gtk_list_store_set (store, &iter,
                      ICON_COLUMN, icon,
                      DISPLAY_NAME_COLUMN, _(FALLBACK_DISPLAY_NAME),
                      TYPE_COLUMN, ROW_TYPE_OTHER_SEPARATOR,
                      DATA_COLUMN, NULL,
                      IS_FOLDER_COLUMN, FALSE,
                      -1);
  button->has_other_separator = TRUE;
  pos++;

  gtk_list_store_insert (store, &iter, pos);
  gtk_list_store_set (store, &iter,
                      ICON_COLUMN, NULL,
                      DISPLAY_NAME_COLUMN, _("Other…"),
                      TYPE_COLUMN, ROW_TYPE_OTHER,
                      DATA_COLUMN, NULL,
                      IS_FOLDER_COLUMN, FALSE,
                      -1);

  g_object_unref (icon);
}

static void
model_remove_rows (GtkFileChooserButton *button,
                   int                   pos,
                   int                   n_rows)
{
  GtkListStore *store;

  if (!n_rows)
    return;

  store = GTK_LIST_STORE (button->model);

  do
    {
      GtkTreeIter iter;

      if (!gtk_tree_model_iter_nth_child (button->model, &iter, NULL, pos))
        g_assert_not_reached ();

      model_free_row_data (button, &iter);
      gtk_list_store_remove (store, &iter);
      n_rows--;
    }
  while (n_rows);
}

/* Filter Model */
static gboolean
test_if_file_is_visible (GFile    *file,
                         gboolean  is_folder)
{
  if (!file)
    return FALSE;

  if (!is_folder)
    return FALSE;

  return TRUE;
}

static gboolean
filter_model_visible_func (GtkTreeModel *model,
                           GtkTreeIter  *iter,
                           gpointer      user_data)
{
  char type;
  gpointer data;
  gboolean retval, is_folder;

  type = ROW_TYPE_INVALID;
  data = NULL;

  gtk_tree_model_get (model, iter,
                      TYPE_COLUMN, &type,
                      DATA_COLUMN, &data,
                      IS_FOLDER_COLUMN, &is_folder,
                      -1);

  switch (type)
    {
    case ROW_TYPE_CURRENT_FOLDER:
      retval = TRUE;
      break;
    case ROW_TYPE_SPECIAL:
    case ROW_TYPE_SHORTCUT:
    case ROW_TYPE_BOOKMARK:
      retval = test_if_file_is_visible (data, is_folder);
      break;
    case ROW_TYPE_VOLUME:
      retval = TRUE;
      break;
    default:
      retval = TRUE;
      break;
    }

  return retval;
}

/* Combo Box */
static void
name_cell_data_func (GtkCellLayout   *layout,
                     GtkCellRenderer *cell,
                     GtkTreeModel    *model,
                     GtkTreeIter     *iter,
                     gpointer         user_data)
{
  char type;

  type = 0;
  gtk_tree_model_get (model, iter,
                      TYPE_COLUMN, &type,
                      -1);

  if (type == ROW_TYPE_CURRENT_FOLDER)
    g_object_set (cell, "ellipsize", PANGO_ELLIPSIZE_END, NULL);
  else if (type == ROW_TYPE_BOOKMARK || type == ROW_TYPE_SHORTCUT)
    g_object_set (cell, "ellipsize", PANGO_ELLIPSIZE_MIDDLE, NULL);
  else
    g_object_set (cell, "ellipsize", PANGO_ELLIPSIZE_NONE, NULL);
}

static gboolean
combo_box_row_separator_func (GtkTreeModel *model,
                              GtkTreeIter  *iter,
                              gpointer      user_data)
{
  char type = ROW_TYPE_INVALID;

  gtk_tree_model_get (model, iter, TYPE_COLUMN, &type, -1);

  return (type == ROW_TYPE_BOOKMARK_SEPARATOR ||
          type == ROW_TYPE_CURRENT_FOLDER_SEPARATOR ||
          type == ROW_TYPE_OTHER_SEPARATOR);
}

static void
select_combo_box_row_no_notify (GtkFileChooserButton *button, int pos)
{
  GtkTreeIter iter, filter_iter;

  gtk_tree_model_iter_nth_child (button->model, &iter, NULL, pos);
  gtk_tree_model_filter_convert_child_iter_to_iter (GTK_TREE_MODEL_FILTER (button->filter_model),
                                                    &filter_iter, &iter);

  g_signal_handlers_block_by_func (button->combo_box, combo_box_changed_cb, button);
  gtk_combo_box_set_active_iter (GTK_COMBO_BOX (button->combo_box), &filter_iter);
  g_signal_handlers_unblock_by_func (button->combo_box, combo_box_changed_cb, button);
}

static void
update_combo_box (GtkFileChooserButton *button)
{
  GFile *file;
  GtkTreeIter iter;
  gboolean row_found;

  file = get_selected_file (button);

  row_found = FALSE;

  gtk_tree_model_get_iter_first (button->filter_model, &iter);

  do
    {
      char type;
      gpointer data;

      type = ROW_TYPE_INVALID;
      data = NULL;

      gtk_tree_model_get (button->filter_model, &iter,
                          TYPE_COLUMN, &type,
                          DATA_COLUMN, &data,
                          -1);

      switch (type)
        {
        case ROW_TYPE_SPECIAL:
        case ROW_TYPE_SHORTCUT:
        case ROW_TYPE_BOOKMARK:
        case ROW_TYPE_CURRENT_FOLDER:
          row_found = (file && g_file_equal (data, file));
          break;
        case ROW_TYPE_VOLUME:
          {
            GFile *base_file = g_file_new_for_uri ("file:///");
            row_found = (file && g_file_equal (base_file, file));
            g_object_unref (base_file);
          }
          break;
        default:
          row_found = FALSE;
          break;
        }

      if (row_found)
        {
          g_signal_handlers_block_by_func (button->combo_box, combo_box_changed_cb, button);
          gtk_combo_box_set_active_iter (GTK_COMBO_BOX (button->combo_box),
                                         &iter);
          g_signal_handlers_unblock_by_func (button->combo_box, combo_box_changed_cb, button);
        }
    }
  while (!row_found && gtk_tree_model_iter_next (button->filter_model, &iter));

  if (!row_found)
    {
      int pos;

      /* If it hasn't been found already, update & select the current-folder row. */
      if (file)
        {
          model_update_current_folder (button, file);
          pos = model_get_type_position (button, ROW_TYPE_CURRENT_FOLDER);
        }
      else
        {
          /* No selection; switch to that row */

          pos = model_get_type_position (button, ROW_TYPE_OTHER_SEPARATOR);
        }

      gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (button->filter_model));

      select_combo_box_row_no_notify (button, pos);
    }

  if (file)
    g_object_unref (file);
}

/* Button */
static void
update_label_get_info_cb (GObject      *source,
                          GAsyncResult *result,
                          gpointer      data)
{
  GFile *file = G_FILE (source);
  GtkFileChooserButton *button = data;
  GIcon *icon;
  GFileInfo *info;

  g_clear_object (&button->update_button_cancellable);

  info = g_file_query_info_finish (file, result, NULL);
  if (!info)
    goto out;

  gtk_label_set_text (GTK_LABEL (button->label), g_file_info_get_display_name (info));

  icon = _gtk_file_info_get_icon (info, ICON_SIZE, gtk_widget_get_scale_factor (GTK_WIDGET (button)));
  gtk_image_set_from_gicon (GTK_IMAGE (button->image), icon);
  gtk_image_set_pixel_size (GTK_IMAGE (button->image), ICON_SIZE);
  if (icon)
    g_object_unref (icon);

out:
  emit_selection_changed_if_changing_selection (button);

  g_clear_object (&info);
  g_object_unref (button);
}

static void
update_label_and_image (GtkFileChooserButton *button)
{
  char *label_text;
  GFile *file;
  gboolean done_changing_selection;

  file = get_selected_file (button);

  label_text = NULL;
  done_changing_selection = FALSE;

  if (button->update_button_cancellable)
    {
      g_cancellable_cancel (button->update_button_cancellable);
      button->update_button_cancellable = NULL;
    }

  if (file)
    {
      GMount *mount;
      GFile *base_file;

      mount = g_file_find_enclosing_mount (file, NULL, NULL);
      if (!mount && g_file_is_native (file))
        base_file = g_file_new_for_uri ("file:///");
      else if (mount)
        base_file = g_mount_get_root (mount);
      else
        base_file = NULL;

      if (base_file && g_file_equal (base_file, file))
        {
          GIcon *icon;

          label_text = g_mount_get_name (mount);
          icon = g_mount_get_icon (mount);
          gtk_image_set_from_gicon (GTK_IMAGE (button->image), icon);
          gtk_image_set_pixel_size (GTK_IMAGE (button->image), ICON_SIZE);
          g_clear_object (&icon);
        }

      g_clear_object (&base_file);
      g_clear_object (&mount);

      if (label_text)
        {
          done_changing_selection = TRUE;
          goto out;
        }

      if (g_file_is_native (file) ||
          !_gtk_bookmarks_manager_has_bookmark (button->bookmarks_manager, file))
        {
          button->update_button_cancellable = g_cancellable_new ();
          g_file_query_info_async (file,
                                   "standard::icon,standard::display-name",
                                   G_FILE_QUERY_INFO_NONE,
                                   G_PRIORITY_DEFAULT,
                                   button->update_button_cancellable,
                                   update_label_get_info_cb,
                                   g_object_ref (button));
        }
      else
        {
          GIcon *icon;

          label_text = _gtk_bookmarks_manager_get_bookmark_label (button->bookmarks_manager, file);
          icon = g_themed_icon_new ("text-x-generic");
          gtk_image_set_from_gicon (GTK_IMAGE (button->image), icon);
          gtk_image_set_pixel_size (GTK_IMAGE (button->image), ICON_SIZE);
          if (icon)
            g_object_unref (icon);

          done_changing_selection = TRUE;
        }
    }
  else
    {
      /* We know the selection is empty */
      done_changing_selection = TRUE;
    }

out:

  g_clear_object (&file);

  if (label_text)
    {
      gtk_label_set_text (GTK_LABEL (button->label), label_text);
      g_free (label_text);
    }
  else
    {
      gtk_label_set_text (GTK_LABEL (button->label), _(FALLBACK_DISPLAY_NAME));
      gtk_image_set_from_gicon (GTK_IMAGE (button->image), NULL);
    }

  if (done_changing_selection)
    emit_selection_changed_if_changing_selection (button);
}


/* ************************ *
 *  Child Object Callbacks  *
 * ************************ */

static gboolean
mount_referenced_by_volume_activation_root (GList *volumes, GMount *mount)
{
  GList *l;
  GFile *mount_root;
  gboolean ret;

  ret = FALSE;

  mount_root = g_mount_get_root (mount);

  for (l = volumes; l != NULL; l = l->next)
    {
      GVolume *volume = G_VOLUME (l->data);
      GFile *volume_activation_root;

      volume_activation_root = g_volume_get_activation_root (volume);
      if (volume_activation_root != NULL)
        {
          if (g_file_has_prefix (volume_activation_root, mount_root))
            {
              ret = TRUE;
              g_object_unref (volume_activation_root);
              break;
            }
          g_object_unref (volume_activation_root);
        }
    }

  g_object_unref (mount_root);
  return ret;
}

static GSList *
get_volumes_list (GVolumeMonitor *volume_monitor)
{
  GSList *result;
  GList *l, *ll;
  GList *drives;
  GList *volumes;
  GList *mounts;
  GDrive *drive;
  GVolume *volume;
  GMount *mount;

  result = NULL;

  /* first go through all connected drives */
  drives = g_volume_monitor_get_connected_drives (volume_monitor);

  for (l = drives; l != NULL; l = l->next)
    {
      drive = l->data;
      volumes = g_drive_get_volumes (drive);

      if (volumes)
        {
          for (ll = volumes; ll != NULL; ll = ll->next)
            {
              volume = ll->data;
              mount = g_volume_get_mount (volume);

              if (mount)
                {
                  /* Show mounted volume */
                  result = g_slist_prepend (result, g_object_ref (mount));
                  g_object_unref (mount);
                }
              else
                {
                  /* Do show the unmounted volumes in the sidebar;
                   * this is so the user can mount it (in case automounting
                   * is off).
                   *
                   * Also, even if automounting is enabled, this gives a visual
                   * cue that the user should remember to yank out the media if
                   * he just unmounted it.
                   */
                  result = g_slist_prepend (result, g_object_ref (volume));
                }

              g_object_unref (volume);
            }

           g_list_free (volumes);
        }
     else if (g_drive_is_media_removable (drive) && !g_drive_is_media_check_automatic (drive))
        {
          /* If the drive has no mountable volumes and we cannot detect media change.. we
           * display the drive in the sidebar so the user can manually poll the drive by
           * right clicking and selecting "Rescan..."
           *
           * This is mainly for drives like floppies where media detection doesn't
           * work.. but it's also for human beings who like to turn off media detection
           * in the OS to save battery juice.
           */

          result = g_slist_prepend (result, g_object_ref (drive));
        }

      g_object_unref (drive);
    }

  g_list_free (drives);

  /* add all volumes that is not associated with a drive */
  volumes = g_volume_monitor_get_volumes (volume_monitor);

  for (l = volumes; l != NULL; l = l->next)
    {
      volume = l->data;
      drive = g_volume_get_drive (volume);

      if (drive)
        {
          g_object_unref (drive);
          continue;
        }

      mount = g_volume_get_mount (volume);

      if (mount)
        {
          /* show this mount */
          result = g_slist_prepend (result, g_object_ref (mount));
          g_object_unref (mount);
        }
      else
        {
          /* see comment above in why we add an icon for a volume */
          result = g_slist_prepend (result, g_object_ref (volume));
        }

      g_object_unref (volume);
    }

  /* add mounts that has no volume (/etc/mtab mounts, ftp, sftp,...) */
  mounts = g_volume_monitor_get_mounts (volume_monitor);

  for (l = mounts; l != NULL; l = l->next)
    {
      mount = l->data;
      volume = g_mount_get_volume (mount);

      if (volume)
        {
          g_object_unref (volume);
          continue;
        }

      /* if there's exists one or more volumes with an activation root
       * inside the mount, don't display the mount
       */
      if (mount_referenced_by_volume_activation_root (volumes, mount))
        {
          g_object_unref (mount);
          continue;
        }

      /* show this mount */
      result = g_slist_prepend (result, g_object_ref (mount));
      g_object_unref (mount);
    }

  g_list_free (volumes);
  g_list_free (mounts);

  return result;
}

static void
volumes_changed (GVolumeMonitor *volume_monitor,
                 gpointer        volume,
                 gpointer        user_data)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (user_data);
  GSList *volumes;

  model_remove_rows (user_data,
                     model_get_type_position (user_data, ROW_TYPE_VOLUME),
                     button->n_volumes);

  button->n_volumes = 0;

  volumes = get_volumes_list (volume_monitor);
  model_add_volumes (user_data, volumes);
  g_slist_free_full (volumes, g_object_unref);

  gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (button->filter_model));

  update_label_and_image (user_data);
  update_combo_box (user_data);
}

static void
bookmarks_changed_cb (gpointer user_data)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (user_data);
  GSList *bookmarks;

  bookmarks = _gtk_bookmarks_manager_list_bookmarks (button->bookmarks_manager);
  model_remove_rows (user_data,
                     model_get_type_position (user_data, ROW_TYPE_BOOKMARK_SEPARATOR),
                     button->n_bookmarks + button->has_bookmark_separator);
  button->has_bookmark_separator = FALSE;
  button->n_bookmarks = 0;
  model_add_bookmarks (user_data, bookmarks);
  g_slist_free_full (bookmarks, g_object_unref);

  gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (button->filter_model));

  update_label_and_image (user_data);
  update_combo_box (user_data);
}

static void
save_inactive_state (GtkFileChooserButton *button)
{
  if (button->current_folder_while_inactive)
    g_object_unref (button->current_folder_while_inactive);

  if (button->selection_while_inactive)
    g_object_unref (button->selection_while_inactive);

  button->current_folder_while_inactive = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (button->chooser));
  button->selection_while_inactive = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (button->chooser));
}

static void
restore_inactive_state (GtkFileChooserButton *button)
{
  if (button->current_folder_while_inactive)
    gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (button->chooser), button->current_folder_while_inactive, NULL);

  if (button->selection_while_inactive)
    gtk_file_chooser_select_file (GTK_FILE_CHOOSER (button->chooser), button->selection_while_inactive, NULL);
  else
    gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER (button->chooser));
}

/* Dialog */
static void
open_dialog (GtkFileChooserButton *button)
{
  GtkWidget *toplevel;

  toplevel = GTK_WIDGET (gtk_widget_get_root (GTK_WIDGET (button)));

  /* Setup the dialog parent to be chooser button's toplevel, and be modal
     as needed. */
  if (button->dialog != NULL)
    {
      if (!gtk_widget_get_visible (button->dialog))
        {
          if (GTK_IS_WINDOW (toplevel))
            {
              if (GTK_WINDOW (toplevel) != gtk_window_get_transient_for (GTK_WINDOW (button->dialog)))
                gtk_window_set_transient_for (GTK_WINDOW (button->dialog),
                                              GTK_WINDOW (toplevel));
              if (gtk_window_get_modal (GTK_WINDOW (toplevel)))
                gtk_window_set_modal (GTK_WINDOW (button->dialog), TRUE);
            }
        }
    }
  else
    {
      if (!gtk_native_dialog_get_visible (GTK_NATIVE_DIALOG (button->native)))
        {
          if (GTK_IS_WINDOW (toplevel))
            {
              if (GTK_WINDOW (toplevel) != gtk_native_dialog_get_transient_for (GTK_NATIVE_DIALOG (button->native)))
                gtk_native_dialog_set_transient_for (GTK_NATIVE_DIALOG (button->native),
                                                     GTK_WINDOW (toplevel));

              if (gtk_window_get_modal (GTK_WINDOW (toplevel)))
                gtk_native_dialog_set_modal (GTK_NATIVE_DIALOG (button->native), TRUE);
            }
        }
    }

  if (!button->active)
    {
      restore_inactive_state (button);
      button->active = TRUE;
    }

  gtk_widget_set_sensitive (button->combo_box, FALSE);
  if (button->dialog)
    gtk_window_present (GTK_WINDOW (button->dialog));
  else
    gtk_native_dialog_show (GTK_NATIVE_DIALOG (button->native));
}

/* Combo Box */
static void
combo_box_changed_cb (GtkComboBox *combo_box,
                      gpointer     user_data)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (user_data);
  GtkTreeIter iter;
  gboolean file_was_set;

  file_was_set = FALSE;

  if (gtk_combo_box_get_active_iter (combo_box, &iter))
    {
      char type;
      gpointer data;

      type = ROW_TYPE_INVALID;
      data = NULL;

      gtk_tree_model_get (button->filter_model, &iter,
                          TYPE_COLUMN, &type,
                          DATA_COLUMN, &data,
                          -1);

      switch (type)
        {
        case ROW_TYPE_SPECIAL:
        case ROW_TYPE_SHORTCUT:
        case ROW_TYPE_BOOKMARK:
        case ROW_TYPE_CURRENT_FOLDER:
          if (data)
            {
              gtk_file_chooser_button_select_file (GTK_FILE_CHOOSER (button), data, NULL);
              file_was_set = TRUE;
            }
          break;
        case ROW_TYPE_VOLUME:
          {
            GFile *base_file = g_file_new_for_uri ("file:///");
            gtk_file_chooser_button_select_file (GTK_FILE_CHOOSER (button), base_file, NULL);
            file_was_set = TRUE;
            g_object_unref (base_file);
          }
          break;
        case ROW_TYPE_OTHER:
          open_dialog (user_data);
          break;
        default:
          break;
        }
    }

  if (file_was_set)
    g_signal_emit (button, file_chooser_button_signals[FILE_SET], 0);
}

/* Button */
static void
button_clicked_cb (GtkButton *real_button,
                   gpointer   user_data)
{
  open_dialog (user_data);
}

/* Dialog */

static void
common_response_cb (GtkFileChooserButton *button,
                    int        response)
{
  if (response == GTK_RESPONSE_ACCEPT ||
      response == GTK_RESPONSE_OK)
    {
      save_inactive_state (button);
    }
  else
    {
      restore_inactive_state (button);
    }

  if (button->active)
    button->active = FALSE;

  update_label_and_image (button);
  update_combo_box (button);

  gtk_widget_set_sensitive (button->combo_box, TRUE);
}


static void
dialog_response_cb (GtkDialog *dialog,
                    int        response,
                    gpointer   user_data)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (user_data);

  common_response_cb (button, response);

  gtk_widget_hide (button->dialog);

  if (response == GTK_RESPONSE_ACCEPT ||
      response == GTK_RESPONSE_OK)
    g_signal_emit (button, file_chooser_button_signals[FILE_SET], 0);
}

static void
native_response_cb (GtkFileChooserNative *native,
                    int        response,
                    gpointer   user_data)
{
  GtkFileChooserButton *button = GTK_FILE_CHOOSER_BUTTON (user_data);

  common_response_cb (button, response);

  /* dialog already hidden */

  if (response == GTK_RESPONSE_ACCEPT ||
      response == GTK_RESPONSE_OK)
    g_signal_emit (button, file_chooser_button_signals[FILE_SET], 0);
}


/* ************************************************************************** *
 *  Public API                                                                *
 * ************************************************************************** */

/**
 * gtk_file_chooser_button_new:
 * @title: the title of the browse dialog.
 * @action: the open mode for the widget.
 *
 * Creates a new file-selecting button widget.
 *
 * Returns: a new button widget.
 */
GtkWidget *
gtk_file_chooser_button_new (const char           *title,
                             GtkFileChooserAction  action)
{
  g_return_val_if_fail (action == GTK_FILE_CHOOSER_ACTION_OPEN ||
                        action == GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER, NULL);

  return g_object_new (GTK_TYPE_FILE_CHOOSER_BUTTON,
                       "action", action,
                       "title", (title ? title : _(DEFAULT_TITLE)),
                       NULL);
}

/**
 * gtk_file_chooser_button_new_with_dialog:
 * @dialog: (type Gtk.Dialog): the widget to use as dialog
 *
 * Creates a #GtkFileChooserButton widget which uses @dialog as its
 * file-picking window.
 *
 * Note that @dialog must be a #GtkDialog (or subclass) which
 * implements the #GtkFileChooser interface and must not have
 * %GTK_DIALOG_DESTROY_WITH_PARENT set.
 *
 * Also note that the dialog needs to have its confirmative button
 * added with response %GTK_RESPONSE_ACCEPT or %GTK_RESPONSE_OK in
 * order for the button to take over the file selected in the dialog.
 *
 * Returns: a new button widget.
 */
GtkWidget *
gtk_file_chooser_button_new_with_dialog (GtkWidget *dialog)
{
  g_return_val_if_fail (GTK_IS_FILE_CHOOSER (dialog) && GTK_IS_DIALOG (dialog), NULL);

  return g_object_new (GTK_TYPE_FILE_CHOOSER_BUTTON,
                       "dialog", dialog,
                       NULL);
}

/**
 * gtk_file_chooser_button_set_title:
 * @button: the button widget to modify.
 * @title: the new browse dialog title.
 *
 * Modifies the @title of the browse dialog used by @button.
 */
void
gtk_file_chooser_button_set_title (GtkFileChooserButton *button,
                                   const char           *title)
{
  g_return_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button));

  if (button->dialog)
    gtk_window_set_title (GTK_WINDOW (button->dialog), title);
  else
    gtk_native_dialog_set_title (GTK_NATIVE_DIALOG (button->native), title);
  g_object_notify (G_OBJECT (button), "title");
}

/**
 * gtk_file_chooser_button_get_title:
 * @button: the button widget to examine.
 *
 * Retrieves the title of the browse dialog used by @button. The returned value
 * should not be modified or freed.
 *
 * Returns: a pointer to the browse dialog’s title.
 */
const char *
gtk_file_chooser_button_get_title (GtkFileChooserButton *button)
{
  g_return_val_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button), NULL);

  if (button->dialog)
    return gtk_window_get_title (GTK_WINDOW (button->dialog));
  else
    return gtk_native_dialog_get_title (GTK_NATIVE_DIALOG (button->native));
}

/**
 * gtk_file_chooser_button_get_width_chars:
 * @button: the button widget to examine.
 *
 * Retrieves the width in characters of the @button widget’s entry and/or label.
 *
 * Returns: an integer width (in characters) that the button will use to size itself.
 */
int
gtk_file_chooser_button_get_width_chars (GtkFileChooserButton *button)
{
  g_return_val_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button), -1);

  return gtk_label_get_width_chars (GTK_LABEL (button->label));
}

/**
 * gtk_file_chooser_button_set_width_chars:
 * @button: the button widget to examine.
 * @n_chars: the new width, in characters.
 *
 * Sets the width (in characters) that @button will use to @n_chars.
 */
void
gtk_file_chooser_button_set_width_chars (GtkFileChooserButton *button,
                                         int                   n_chars)
{
  g_return_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button));

  gtk_label_set_width_chars (GTK_LABEL (button->label), n_chars);
  g_object_notify (G_OBJECT (button), "width-chars");
}

/**
 * gtk_file_chooser_button_set_modal:
 * @button: a #GtkFileChooserButton
 * @modal: %TRUE to make the dialog modal
 *
 * Sets whether the dialog should be modal.
 */
void
gtk_file_chooser_button_set_modal (GtkFileChooserButton *button,
                                   gboolean              modal)
{
  g_return_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button));

  g_object_set (button, "modal", modal, NULL);
}

/**
 * gtk_file_chooser_button_get_modal:
 * @button: a #GtkFileChooserButton
 *
 * Gets whether the dialog is modal.
 *
 * Returns: %TRUE if the dialog is modal
 */
gboolean
gtk_file_chooser_button_get_modal (GtkFileChooserButton *button)
{
  gboolean modal;

  g_return_val_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button), FALSE);

  g_object_get (button, "modal", &modal, NULL);

  return modal;
}