gtkfilechooserbutton.c 46.5 KB
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 2 -*- */

/* GTK+: 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, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

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

#include "gtkalias.h"
#include "gtkintl.h"
#include "gtkdnd.h"
#include "gtkentry.h"
#include "gtkhbox.h"
#include "gtkicontheme.h"
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#include "gtkiconfactory.h"
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#include "gtkimage.h"
#include "gtklabel.h"
#include "gtkstock.h"
#include "gtktogglebutton.h"
#include "gtkvseparator.h"
#include "gtkfilechooserdialog.h"
#include "gtkfilechooserentry.h"
#include "gtkfilechooserprivate.h"
#include "gtkfilechooserutils.h"

#include "gtkfilechooserbutton.h"


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

#define GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE(object) (GTK_FILE_CHOOSER_BUTTON ((object))->priv)

#define DEFAULT_FILENAME	N_("(None)")
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#define MIN_LABEL_WIDTH		100
#define ENTRY_BUTTON_SPACING	0
#define FALLBACK_ICON_SIZE	20
#define FALLBACK_ICON_NAME	"stock_unknown"
#define NEW_FILE_ICON_NAME	"stock_new"
#define NEW_DIR_ICON_NAME	"stock_new-dir"
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/* ********************** *
 *  Private Enumerations  *
 * ********************** */

/* Property IDs */
enum
{
  PROP_0,

  PROP_DIALOG,
  PROP_TITLE,
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  PROP_ACTIVE,
  PROP_WIDTH_CHARS
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};


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

struct _GtkFileChooserButtonPrivate
{
  GtkWidget *dialog;
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  GtkWidget *accept_button;
  GtkWidget *entry_box;
  GtkWidget *entry_image;
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  GtkWidget *entry;
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  GtkWidget *label_box;
  GtkWidget *label_image;
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  GtkWidget *label;
  GtkWidget *button;

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  gchar *backend;
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  gulong entry_changed_id;
  gulong dialog_file_activated_id;
  gulong dialog_folder_changed_id;
  gulong dialog_selection_changed_id;
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  gulong dialog_selection_changed_proxy_id;
  gulong settings_signal_id;
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  guint update_id;
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  gint icon_size;
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};


/* ************* *
 *  DnD Support  *
 * ************* */

enum
{
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  TEXT_PLAIN,
  TEXT_URI_LIST
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};

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

/* GObject Functions */
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static GObject *gtk_file_chooser_button_constructor        (GType             type,
							    guint             n_params,
							    GObjectConstructParam *params);
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static void     gtk_file_chooser_button_set_property       (GObject          *object,
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							    guint             param_id,
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							    const GValue     *value,
							    GParamSpec       *pspec);
static void     gtk_file_chooser_button_get_property       (GObject          *object,
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							    guint             param_id,
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							    GValue           *value,
							    GParamSpec       *pspec);

/* GtkObject Functions */
static void     gtk_file_chooser_button_destroy            (GtkObject        *object);

/* GtkWidget Functions */
static void     gtk_file_chooser_button_drag_data_received (GtkWidget        *widget,
							    GdkDragContext   *context,
							    gint              x,
							    gint              y,
							    GtkSelectionData *data,
							    guint             info,
							    guint             drag_time);
static void     gtk_file_chooser_button_show_all           (GtkWidget        *widget);
static void     gtk_file_chooser_button_hide_all           (GtkWidget        *widget);
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static void     gtk_file_chooser_button_show               (GtkWidget        *widget);
static void     gtk_file_chooser_button_hide               (GtkWidget        *widget);
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static gboolean gtk_file_chooser_button_mnemonic_activate  (GtkWidget        *widget,
							    gboolean          group_cycling);
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static void     gtk_file_chooser_button_style_set          (GtkWidget        *widget,
							    GtkStyle         *old_style);
static void     gtk_file_chooser_button_screen_changed     (GtkWidget        *widget,
							    GdkScreen        *old_screen);
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/* Child Widget Callbacks */
static void     dialog_update_preview_cb                   (GtkFileChooser   *dialog,
							    gpointer          user_data);
static void     dialog_selection_changed_cb                (GtkFileChooser   *dialog,
							    gpointer          user_data);
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static void     dialog_selection_changed_proxy_cb          (GtkFileChooser   *dialog,
							    gpointer          user_data);
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static void     dialog_file_activated_cb                   (GtkFileChooser   *dialog,
							    gpointer          user_data);
static void     dialog_current_folder_changed_cb           (GtkFileChooser   *dialog,
							    gpointer          user_data);
static void     dialog_notify_cb                           (GObject          *dialog,
							    GParamSpec       *pspec,
							    gpointer          user_data);
static gboolean dialog_delete_event_cb                     (GtkWidget        *dialog,
							    GdkEvent         *event,
							    gpointer          user_data);
static void     dialog_response_cb                         (GtkFileChooser   *dialog,
							    gint              response,
							    gpointer          user_data);

static void     button_toggled_cb                          (GtkToggleButton  *real_button,
							    gpointer          user_data);
static void     button_notify_active_cb                    (GObject          *real_button,
							    GParamSpec       *pspec,
							    gpointer          user_data);

static void     entry_size_allocate_cb                     (GtkWidget        *entry,
							    GtkAllocation    *allocation,
							    gpointer          user_data);
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static void     entry_changed_cb                           (GtkEditable      *editable,
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							    gpointer          user_data);

/* Utility Functions */
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static void     remove_settings_signal                     (GtkFileChooserButton *button,
							    GdkScreen            *screen);
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static void     update_dialog                              (GtkFileChooserButton *button);
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static void     update_entry                               (GtkFileChooserButton *button);
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static void     update_label                               (GtkFileChooserButton *button);
static void     update_icons                               (GtkFileChooserButton *button);
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/* ******************* *
 *  GType Declaration  *
 * ******************* */

G_DEFINE_TYPE_WITH_CODE (GtkFileChooserButton, gtk_file_chooser_button, GTK_TYPE_HBOX, { \
    G_IMPLEMENT_INTERFACE (GTK_TYPE_FILE_CHOOSER, _gtk_file_chooser_delegate_iface_init) \
});


/* ***************** *
 *  GType Functions  *
 * ***************** */

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

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

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  gobject_class->constructor = gtk_file_chooser_button_constructor;
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  gobject_class->set_property = gtk_file_chooser_button_set_property;
  gobject_class->get_property = gtk_file_chooser_button_get_property;

  gtkobject_class->destroy = gtk_file_chooser_button_destroy;

  widget_class->drag_data_received = gtk_file_chooser_button_drag_data_received;
  widget_class->show_all = gtk_file_chooser_button_show_all;
  widget_class->hide_all = gtk_file_chooser_button_hide_all;
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  widget_class->show = gtk_file_chooser_button_show;
  widget_class->hide = gtk_file_chooser_button_hide;
  widget_class->style_set = gtk_file_chooser_button_style_set;
  widget_class->screen_changed = gtk_file_chooser_button_screen_changed;
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  widget_class->mnemonic_activate = gtk_file_chooser_button_mnemonic_activate;
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  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_DIALOG,
							(G_PARAM_WRITABLE |
							 G_PARAM_CONSTRUCT_ONLY)));
  g_object_class_install_property (gobject_class, PROP_TITLE,
				   g_param_spec_string ("title",
							P_("Title"),
							P_("The title of the file chooser dialog."),
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							_("Select a File"),
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							G_PARAM_READWRITE));
  g_object_class_install_property (gobject_class, PROP_ACTIVE,
				   g_param_spec_boolean ("active",
							 P_("Active"),
							 P_("Whether the browse dialog is visible or not."),
							 FALSE, G_PARAM_READWRITE));
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  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,
						     G_PARAM_READWRITE));
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  _gtk_file_chooser_install_properties (gobject_class);

  g_type_class_add_private (class, sizeof (GtkFileChooserButtonPrivate));
}


static void
gtk_file_chooser_button_init (GtkFileChooserButton *button)
{
  GtkFileChooserButtonPrivate *priv;
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  GtkWidget *box, *image, *sep;
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  gtk_box_set_spacing (GTK_BOX (button), ENTRY_BUTTON_SPACING);
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  priv = G_TYPE_INSTANCE_GET_PRIVATE (button, GTK_TYPE_FILE_CHOOSER_BUTTON,
				      GtkFileChooserButtonPrivate);
  button->priv = priv;

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  priv->icon_size = FALLBACK_ICON_SIZE;

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  gtk_widget_push_composite_child ();

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  priv->entry_box = gtk_hbox_new (FALSE, 4);
  gtk_container_add (GTK_CONTAINER (button), priv->entry_box);

  priv->entry_image = gtk_image_new ();
  gtk_box_pack_start (GTK_BOX (priv->entry_box), priv->entry_image,
		      FALSE, FALSE, 0);
  gtk_widget_show (priv->entry_image);

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  priv->entry = _gtk_file_chooser_entry_new (FALSE);
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  gtk_container_add (GTK_CONTAINER (priv->entry_box), priv->entry);
  gtk_widget_show (priv->entry);
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  priv->button = gtk_toggle_button_new ();
  g_signal_connect (priv->button, "toggled",
		    G_CALLBACK (button_toggled_cb), button);
  g_signal_connect (priv->button, "notify::active",
		    G_CALLBACK (button_notify_active_cb), button);
  g_signal_connect (priv->entry, "size-allocate",
		    G_CALLBACK (entry_size_allocate_cb), priv->button);
  gtk_box_pack_start (GTK_BOX (button), priv->button, TRUE, TRUE, 0);
  gtk_widget_show (priv->button);

  box = gtk_hbox_new (FALSE, 4);
  gtk_container_add (GTK_CONTAINER (priv->button), box);
  gtk_widget_show (box);
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  priv->label_box = gtk_hbox_new (FALSE, 6);
  gtk_container_add (GTK_CONTAINER (box), priv->label_box);
  gtk_widget_show (priv->label_box);

  priv->label_image = gtk_image_new ();
  gtk_box_pack_start (GTK_BOX (priv->label_box), priv->label_image,
		      FALSE, FALSE, 0);
  gtk_widget_show (priv->label_image);
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  priv->label = gtk_label_new (_(DEFAULT_FILENAME));
  gtk_label_set_ellipsize (GTK_LABEL (priv->label), PANGO_ELLIPSIZE_START);
  gtk_misc_set_alignment (GTK_MISC (priv->label), 0.0, 0.5);
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  gtk_container_add (GTK_CONTAINER (priv->label_box), priv->label);
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  gtk_widget_show (priv->label);

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  sep = gtk_vseparator_new ();
  gtk_box_pack_end (GTK_BOX (priv->label_box), sep, FALSE, FALSE, 0);
  gtk_widget_show (sep);

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  image = gtk_image_new_from_stock (GTK_STOCK_OPEN,
				    GTK_ICON_SIZE_SMALL_TOOLBAR);
  gtk_box_pack_end (GTK_BOX (box), image, FALSE, FALSE, 0);
  gtk_widget_show (image);

  gtk_widget_pop_composite_child ();

  /* DnD */
  gtk_drag_dest_unset (priv->entry);
  gtk_drag_dest_set (GTK_WIDGET (button),
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                     (GTK_DEST_DEFAULT_ALL),
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		     NULL, 0,
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		     GDK_ACTION_COPY);
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  gtk_drag_dest_add_text_targets (GTK_WIDGET (button));
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  gtk_target_list_add_uri_targets (gtk_drag_dest_get_target_list (GTK_WIDGET (button)), 
				   TEXT_URI_LIST);
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}


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

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static GObject *
gtk_file_chooser_button_constructor (GType                  type,
				     guint                  n_params,
				     GObjectConstructParam *params)
{
  GObject *object;
  GtkFileChooserButtonPrivate *priv;
  GtkFilePath *path;

  object = (*G_OBJECT_CLASS (gtk_file_chooser_button_parent_class)->constructor) (type,
										  n_params,
										  params);
  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (object);

  if (!priv->dialog)
    {
      if (priv->backend)
	priv->dialog = gtk_file_chooser_dialog_new_with_backend (NULL, NULL,
								 GTK_FILE_CHOOSER_ACTION_OPEN,
								 priv->backend, NULL);
      else
	priv->dialog = gtk_file_chooser_dialog_new (NULL, NULL,
						    GTK_FILE_CHOOSER_ACTION_OPEN,
						    NULL);

      gtk_dialog_add_button (GTK_DIALOG (priv->dialog),
			     GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
      priv->accept_button = gtk_dialog_add_button (GTK_DIALOG (priv->dialog),
						   GTK_STOCK_OPEN,
						   GTK_RESPONSE_ACCEPT);
      gtk_dialog_set_default_response (GTK_DIALOG (priv->dialog),
				       GTK_RESPONSE_ACCEPT);

      gtk_dialog_set_alternative_button_order (GTK_DIALOG (priv->dialog),
					       GTK_RESPONSE_ACCEPT,
					       GTK_RESPONSE_CANCEL,
					       -1);
    }

  g_free (priv->backend);
  priv->backend = NULL;

  g_signal_connect (priv->dialog, "delete-event",
		    G_CALLBACK (dialog_delete_event_cb), object);
  g_signal_connect (priv->dialog, "response",
		    G_CALLBACK (dialog_response_cb), object);

  /* 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, priv->dialog);
  priv->dialog_folder_changed_id =
    g_signal_connect (priv->dialog, "current-folder-changed",
		      G_CALLBACK (dialog_current_folder_changed_cb), object);
  priv->dialog_file_activated_id =
    g_signal_connect (priv->dialog, "file-activated",
		      G_CALLBACK (dialog_file_activated_cb), object);
  priv->dialog_selection_changed_id =
    g_signal_connect (priv->dialog, "selection-changed",
		      G_CALLBACK (dialog_selection_changed_cb), object);
  priv->dialog_selection_changed_proxy_id =
    g_signal_connect (priv->dialog, "selection-changed",
		      G_CALLBACK (dialog_selection_changed_proxy_cb), object);
  g_signal_connect (priv->dialog, "update-preview",
		    G_CALLBACK (dialog_update_preview_cb), object);
  g_signal_connect (priv->dialog, "notify",
		    G_CALLBACK (dialog_notify_cb), object);
  g_object_add_weak_pointer (G_OBJECT (priv->dialog),
			     (gpointer *) (&priv->dialog));

  _gtk_file_chooser_entry_set_file_system (GTK_FILE_CHOOSER_ENTRY (priv->entry),
					   _gtk_file_chooser_get_file_system (GTK_FILE_CHOOSER (priv->dialog)));
  path = gtk_file_path_new_steal ("/");
  _gtk_file_chooser_entry_set_base_folder (GTK_FILE_CHOOSER_ENTRY (priv->entry),
					   path);
  priv->entry_changed_id = g_signal_connect (priv->entry, "changed",
					     G_CALLBACK (entry_changed_cb),
					     object);

  update_label (GTK_FILE_CHOOSER_BUTTON (object));

  return object;
}
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static void
gtk_file_chooser_button_set_property (GObject      *object,
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				      guint         param_id,
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				      const GValue *value,
				      GParamSpec   *pspec)
{
  GtkFileChooserButtonPrivate *priv;

  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (object);

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  switch (param_id)
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    {
    case PROP_DIALOG:
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      /* Construct-only */
      priv->dialog = g_value_get_object (value);
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      break;
    case PROP_ACTIVE:
      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
				    g_value_get_boolean (value));
      break;
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    case PROP_WIDTH_CHARS:
      gtk_file_chooser_button_set_width_chars (GTK_FILE_CHOOSER_BUTTON (object),
					       g_value_get_int (value));
      break;
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    case GTK_FILE_CHOOSER_PROP_ACTION:
      g_object_set_property (G_OBJECT (priv->dialog), pspec->name, value);
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      _gtk_file_chooser_entry_set_action (GTK_FILE_CHOOSER_ENTRY (priv->entry),
					  (GtkFileChooserAction) g_value_get_enum (value));
      update_icons (GTK_FILE_CHOOSER_BUTTON (object));
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      switch (g_value_get_enum (value))
	{
	case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
	  gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER (priv->dialog));
	  /* Fall through to set the widget states */
	case GTK_FILE_CHOOSER_ACTION_OPEN:
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	  gtk_widget_hide (priv->entry_box);
	  gtk_widget_show (priv->label_box);
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	  gtk_box_set_child_packing (GTK_BOX (object), priv->button,
				     TRUE, TRUE, 0, GTK_PACK_START);
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	  gtk_button_set_label (GTK_BUTTON (priv->accept_button),
				GTK_STOCK_OPEN);
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	  break;

	case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
	  gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER (priv->dialog));
	  /* Fall through to set the widget states */
	case GTK_FILE_CHOOSER_ACTION_SAVE:
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	  gtk_widget_show (priv->entry_box);
	  gtk_widget_hide (priv->label_box);
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	  gtk_box_set_child_packing (GTK_BOX (object), priv->button,
				     FALSE, FALSE, 0, GTK_PACK_START);
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	  gtk_button_set_label (GTK_BUTTON (priv->accept_button),
				GTK_STOCK_SAVE);
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	  break;
	}
      break;

    case PROP_TITLE:
    case GTK_FILE_CHOOSER_PROP_FILTER:
    case GTK_FILE_CHOOSER_PROP_LOCAL_ONLY:
    case GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET:
    case GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET_ACTIVE:
    case GTK_FILE_CHOOSER_PROP_USE_PREVIEW_LABEL:
    case GTK_FILE_CHOOSER_PROP_EXTRA_WIDGET:
    case GTK_FILE_CHOOSER_PROP_SHOW_HIDDEN:
      g_object_set_property (G_OBJECT (priv->dialog), pspec->name, value);
      break;

    case GTK_FILE_CHOOSER_PROP_FILE_SYSTEM_BACKEND:
      /* Construct-only */
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      priv->backend = g_value_dup_string (value);
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      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:
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      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
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      break;
    }
}

static void
gtk_file_chooser_button_get_property (GObject    *object,
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				      guint       param_id,
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				      GValue     *value,
				      GParamSpec *pspec)
{
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  GtkFileChooserButtonPrivate *priv;
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  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (object);

  switch (param_id)
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    {
    case PROP_ACTIVE:
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      g_value_set_boolean (value,
			   gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->button)));
      break;
    case PROP_WIDTH_CHARS:
      g_value_set_int (value,
		       gtk_entry_get_width_chars (GTK_ENTRY (priv->entry)));
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      break;

    case PROP_TITLE:
    case GTK_FILE_CHOOSER_PROP_ACTION:
    case GTK_FILE_CHOOSER_PROP_FILE_SYSTEM_BACKEND:
    case GTK_FILE_CHOOSER_PROP_FILTER:
    case GTK_FILE_CHOOSER_PROP_LOCAL_ONLY:
    case GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET:
    case GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET_ACTIVE:
    case GTK_FILE_CHOOSER_PROP_USE_PREVIEW_LABEL:
    case GTK_FILE_CHOOSER_PROP_EXTRA_WIDGET:
    case GTK_FILE_CHOOSER_PROP_SELECT_MULTIPLE:
    case GTK_FILE_CHOOSER_PROP_SHOW_HIDDEN:
      g_object_get_property (G_OBJECT (priv->dialog), pspec->name, value);
      break;

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


/* ********************* *
 *  GtkObject Functions  *
 * ********************* */

static void
gtk_file_chooser_button_destroy (GtkObject * object)
{
  GtkFileChooserButtonPrivate *priv;

  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (object);

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  if (priv->update_id)
    g_source_remove (priv->update_id);

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  if (priv->dialog != NULL)
    gtk_widget_destroy (priv->dialog);
  
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  remove_settings_signal (GTK_FILE_CHOOSER_BUTTON (object),
			  gtk_widget_get_screen (GTK_WIDGET (object)));
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  if (GTK_OBJECT_CLASS (gtk_file_chooser_button_parent_class)->destroy != NULL)
    (*GTK_OBJECT_CLASS (gtk_file_chooser_button_parent_class)->destroy) (object);
}


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

static void
gtk_file_chooser_button_drag_data_received (GtkWidget	     *widget,
					    GdkDragContext   *context,
					    gint	      x,
					    gint	      y,
					    GtkSelectionData *data,
					    guint	      info,
					    guint	      drag_time)
{
  GtkFileChooserButtonPrivate *priv;
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  gchar *text;
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  if (GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->drag_data_received != NULL)
    (*GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->drag_data_received) (widget,
										    context,
										    x, y,
										    data, info,
										    drag_time);

  if (widget == NULL || context == NULL || data == NULL || data->length < 0)
    return;

  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (widget);

  switch (info)
    {
    case TEXT_URI_LIST:
      {
	gchar **uris;
	guint i;
	gboolean selected;

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	uris = gtk_selection_data_get_uris (data);
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	if (uris == NULL)
	  break;

	selected = FALSE;
	for (i = 0; !selected && uris[i] != NULL; i++)
	  {
	    GtkFileSystem *fs;
	    GtkFilePath *path, *base_path;

	    fs = _gtk_file_chooser_get_file_system (GTK_FILE_CHOOSER (priv->dialog));
	    path = gtk_file_system_uri_to_path (fs, uris[i]);

	    base_path = NULL;
	    if (path != NULL &&
		gtk_file_system_get_parent (fs, path, &base_path, NULL))
	      {
		GtkFileFolder *folder;
		GtkFileInfo *info;

		folder = gtk_file_system_get_folder (fs, base_path,
						     GTK_FILE_INFO_IS_FOLDER,
						     NULL);

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		info = gtk_file_folder_get_info (folder, path, NULL);
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		if (info != NULL)
		  {
		    GtkFileChooserAction action;

		    g_object_get (priv->dialog, "action", &action, NULL);

		    selected = 
		      ((((action == GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER ||
			  action == GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER) &&
			 gtk_file_info_get_is_folder (info)) ||
			((action == GTK_FILE_CHOOSER_ACTION_OPEN ||
			  action == GTK_FILE_CHOOSER_ACTION_SAVE) &&
			 !gtk_file_info_get_is_folder (info))) &&
			_gtk_file_chooser_select_path (GTK_FILE_CHOOSER (priv->dialog),
						       path, NULL));

		    gtk_file_info_free (info);
		  }
		else
		  selected = FALSE;

		gtk_file_path_free (base_path);
	      }

	    gtk_file_path_free (path);
	  }

	g_strfreev (uris);
      }
      break;

    case TEXT_PLAIN:
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      text = gtk_selection_data_get_text (data);
      gtk_entry_set_text (GTK_ENTRY (priv->entry), text);
      g_free (text);
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      break;
    }

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  gtk_drag_finish (context, TRUE, FALSE, drag_time);
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}

static void
gtk_file_chooser_button_show_all (GtkWidget *widget)
{
  gtk_widget_show (widget);
}

static void
gtk_file_chooser_button_hide_all (GtkWidget *widget)
{
  gtk_widget_hide (widget);
}

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static void
gtk_file_chooser_button_show (GtkWidget *widget)
{
  GtkFileChooserButtonPrivate *priv;

  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (widget);

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

  if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->button)))
    gtk_widget_show (priv->dialog);
}

static void
gtk_file_chooser_button_hide (GtkWidget *widget)
{
  GtkFileChooserButtonPrivate *priv;

  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (widget);

  gtk_widget_hide (priv->dialog);

  if (GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->hide)
    (*GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->hide) (widget);
}
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static gboolean
gtk_file_chooser_button_mnemonic_activate (GtkWidget *widget,
					   gboolean   group_cycling)
{
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  GtkFileChooserButtonPrivate *priv;
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  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (widget);
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  switch (gtk_file_chooser_get_action (GTK_FILE_CHOOSER (priv->dialog)))
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    {
    case GTK_FILE_CHOOSER_ACTION_OPEN:
    case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
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      gtk_widget_grab_focus (priv->button);
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      break;
    case GTK_FILE_CHOOSER_ACTION_SAVE:
    case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
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      gtk_widget_grab_focus (priv->entry);
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      break;
    }

  return TRUE;
}

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/* Changes the icons wherever it is needed */
static void
change_icon_theme (GtkFileChooserButton *button)
{
  GtkSettings *settings;
  gint width, height;

  settings = gtk_settings_get_for_screen (gtk_widget_get_screen (GTK_WIDGET (button)));

  if (gtk_icon_size_lookup_for_settings (settings, GTK_ICON_SIZE_SMALL_TOOLBAR,
					 &width, &height))
    button->priv->icon_size = MAX (width, height);
  else
    button->priv->icon_size = FALLBACK_ICON_SIZE;

  update_icons (button);
}

/* Callback used when a GtkSettings value changes */
static void
settings_notify_cb (GObject    *object,
		    GParamSpec *pspec,
		    gpointer    user_data)
{
  const char *name;

  name = g_param_spec_get_name (pspec);

  if (strcmp (name, "gtk-icon-theme-name") == 0
      || strcmp (name, "gtk-icon-sizes") == 0)
    change_icon_theme (user_data);
}

/* Installs a signal handler for GtkSettings so that we can monitor changes in
 * the icon theme.
 */
static void
check_icon_theme (GtkFileChooserButton *button)
{
  GtkSettings *settings;

  if (button->priv->settings_signal_id)
    return;

  if (gtk_widget_has_screen (GTK_WIDGET (button)))
    {
      settings = gtk_settings_get_for_screen (gtk_widget_get_screen (GTK_WIDGET (button)));
      button->priv->settings_signal_id = g_signal_connect (settings, "notify",
							   G_CALLBACK (settings_notify_cb),
							   button);

      change_icon_theme (button);
    }
}

static void
gtk_file_chooser_button_style_set (GtkWidget *widget,
				   GtkStyle  *old_style)
{
  if (GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->style_set)
    (*GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->style_set) (widget,
									   old_style);

  if (gtk_widget_has_screen (widget))
    change_icon_theme (GTK_FILE_CHOOSER_BUTTON (widget));
}

static void
gtk_file_chooser_button_screen_changed (GtkWidget *widget,
					GdkScreen *old_screen)
{
  GtkFileChooserButton *button;

  button = GTK_FILE_CHOOSER_BUTTON (widget);

  if (GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->screen_changed)
    (*GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->screen_changed) (widget,
										old_screen);

  remove_settings_signal (button, old_screen);
  check_icon_theme (button); 
}

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

/**
 * gtk_file_chooser_button_new:
 * @title: the title of the browse dialog.
 * 
 * Creates a new file-selecting button widget.
 * 
 * Returns: a new button widget.
 * 
 * Since: 2.6
 **/
GtkWidget *
gtk_file_chooser_button_new (const gchar *title)
{
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  return g_object_new (GTK_TYPE_FILE_CHOOSER_BUTTON,
		       "title", title,
		       NULL);
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}

/**
 * gtk_file_chooser_button_new_with_backend:
 * @title: the title of the browse dialog.
 * @backend: the name of the #GtkFileSystem backend to use.
 * 
 * Creates a new file-selecting button widget using @backend.
 * 
 * Returns: a new button widget.
 * 
 * Since: 2.6
 **/
GtkWidget *
gtk_file_chooser_button_new_with_backend (const gchar *title,
					  const gchar *backend)
{
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  return g_object_new (GTK_TYPE_FILE_CHOOSER_BUTTON,
		       "title", title,
		       "file-system-backend", backend,
		       NULL);
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}

/**
 * gtk_file_chooser_button_new_with_dialog:
 * @dialog: the #GtkDialog widget to use.
 * 
 * Creates a #GtkFileChooserButton widget which uses @dialog as it's
 * file-picking window. Note that @dialog must be a #GtkFileChooserDialog (or
 * subclass).
 * 
 * Returns: a new button widget.
 * 
 * Since: 2.6
 **/
GtkWidget *
gtk_file_chooser_button_new_with_dialog (GtkWidget *dialog)
{
  g_return_val_if_fail (GTK_IS_FILE_CHOOSER_DIALOG (dialog), NULL);

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

/**
 * 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.
 * 
 * Since: 2.6
 **/
void
gtk_file_chooser_button_set_title (GtkFileChooserButton *button,
				   const gchar          *title)
{
  g_return_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button));

  gtk_window_set_title (GTK_WINDOW (button->priv->dialog), 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.
 * 
 * Since: 2.6
 **/
G_CONST_RETURN gchar *
gtk_file_chooser_button_get_title (GtkFileChooserButton *button)
{
  g_return_val_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button), NULL);

  return gtk_window_get_title (GTK_WINDOW (button->priv->dialog));
}

/**
 * gtk_file_chooser_button_set_active:
 * @button: the button widget to modify.
 * @is_active: whether or not the dialog is visible.
 * 
 * Modifies whether or not the dialog attached to @button is visible or not.
 * 
 * Since: 2.6
 **/
void
gtk_file_chooser_button_set_active (GtkFileChooserButton *button,
				    gboolean		  is_active)
{
  g_return_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button));

  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button->priv->button), is_active);
}

/**
 * gtk_file_chooser_button_get_active:
 * @button: the button widget to examine.
 * 
 * Retrieves whether or not the dialog attached to @button is visible.
 * 
 * Returns: a boolean whether the dialog is visible or not.
 * 
 * Since: 2.6
 **/
gboolean
gtk_file_chooser_button_get_active (GtkFileChooserButton *button)
{
  g_return_val_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button), FALSE);

  return gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button->priv->button));
}

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/**
 * 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.
 * 
 * Since: 2.6
 **/
gint
gtk_file_chooser_button_get_width_chars (GtkFileChooserButton *button)
{
  g_return_val_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button), -1);

  return gtk_entry_get_width_chars (GTK_ENTRY (button->priv->entry));
}

/**
 * gtk_file_chooser_button_set_width_chars:
 * @button: the button widget to examine.
 * @n_chars: the new width, in chracters.
 * 
 * Sets the width (in characters) that @button will use to @n_chars.
 * 
 * Since: 2.6
 **/
void
gtk_file_chooser_button_set_width_chars (GtkFileChooserButton *button,
					 gint                  n_chars)
{
  g_return_if_fail (GTK_IS_FILE_CHOOSER_BUTTON (button));

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

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

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/* Removes the settings signal handler.  It's safe to call multiple times */
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static void
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remove_settings_signal (GtkFileChooserButton *button,
			GdkScreen            *screen)
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{
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  if (button->priv->settings_signal_id)
    {
      GtkSettings *settings;
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      settings = gtk_settings_get_for_screen (screen);
      g_signal_handler_disconnect (settings,
				   button->priv->settings_signal_id);
      button->priv->settings_signal_id = 0;
    }
}
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static GtkIconTheme *
get_icon_theme (GtkWidget *widget)
{
  if (gtk_widget_has_screen (widget))
    return gtk_icon_theme_get_for_screen (gtk_widget_get_screen (widget));
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  return gtk_icon_theme_get_default ();
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}

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static gboolean
check_if_path_exists (GtkFileSystem     *fs,
		      const GtkFilePath *path)
1052
{
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  gboolean path_exists;
  GtkFilePath *parent_path;
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  path_exists = FALSE;
  parent_path = NULL;
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  if (gtk_file_system_get_parent (fs, path, &parent_path, NULL))
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    {
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      GtkFileFolder *folder;
    
      folder = gtk_file_system_get_folder (fs, parent_path, 0, NULL);
      if (folder)
	{
	  GtkFileInfo *info;
	
	  info = gtk_file_folder_get_info (folder, path, NULL);
	  if (info)
	    {
	      path_exists = TRUE;
	      gtk_file_info_free (info);
	    }

	  g_object_unref (folder);
	}
    
      gtk_file_path_free (parent_path);
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    }

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  return path_exists;
}

static void
update_icons (GtkFileChooserButton *button)
{
  GtkFileChooserButtonPrivate *priv;
  GdkPixbuf *pixbuf;
  GSList *paths;

  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (button);
  pixbuf = NULL;
  paths = _gtk_file_chooser_get_paths (GTK_FILE_CHOOSER (priv->dialog));

  if (paths)
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    {
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      GtkFilePath *path;
      GtkFileSystem *fs;
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      path = paths->data;
      fs = _gtk_file_chooser_get_file_system (GTK_FILE_CHOOSER (priv->dialog));

      switch (gtk_file_chooser_get_action (GTK_FILE_CHOOSER (priv->dialog)))
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	{
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	case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
	  {
	    GtkFileSystemVolume *volume;
      
	    volume = gtk_file_system_get_volume_for_path (fs, path);
	    if (volume)
	      {
		GtkFilePath *base_path;

		base_path = gtk_file_system_volume_get_base_path (fs, volume);
		
		if (base_path && gtk_file_path_compare (base_path, path) == 0)
		  pixbuf = gtk_file_system_volume_render_icon (fs, volume,
							       GTK_WIDGET (button),
							       priv->icon_size,
							       NULL);

		if (base_path)
		  gtk_file_path_free (base_path);

		gtk_file_system_volume_free (fs, volume);
	      }
	  }
	
	case GTK_FILE_CHOOSER_ACTION_OPEN:
	  if (!pixbuf)
	    pixbuf = gtk_file_system_render_icon (fs, path, GTK_WIDGET (button),
						  priv->icon_size, NULL);
	  break;

	case GTK_FILE_CHOOSER_ACTION_SAVE:
	  if (check_if_path_exists (fs, path))
	    pixbuf = gtk_icon_theme_load_icon (get_icon_theme (GTK_WIDGET (button)),
					       GTK_STOCK_DIALOG_WARNING,
					       priv->icon_size, 0, NULL);
	  else
	    pixbuf = gtk_icon_theme_load_icon (get_icon_theme (GTK_WIDGET (button)),
					       NEW_FILE_ICON_NAME,
					       priv->icon_size, 0, NULL);
	  break;
	case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
	  if (check_if_path_exists (fs, path))
	    pixbuf = gtk_icon_theme_load_icon (get_icon_theme (GTK_WIDGET (button)),
					       GTK_STOCK_DIALOG_WARNING,
					       priv->icon_size, 0, NULL);
	  else
	    pixbuf = gtk_icon_theme_load_icon (get_icon_theme (GTK_WIDGET (button)),
					       NEW_DIR_ICON_NAME,
					       priv->icon_size, 0, NULL);
	  break;
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	}
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      gtk_file_paths_free (paths);
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    }

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  if (!pixbuf)
    pixbuf = gtk_icon_theme_load_icon (get_icon_theme (GTK_WIDGET (button)),
				       FALLBACK_ICON_NAME,
				       priv->icon_size, 0, NULL);

  gtk_image_set_from_pixbuf (GTK_IMAGE (priv->entry_image), pixbuf);
  gtk_image_set_from_pixbuf (GTK_IMAGE (priv->label_image), pixbuf);

  if (pixbuf)
    g_object_unref (pixbuf);
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}


static void
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update_label (GtkFileChooserButton *button)
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{
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  GtkFileChooserButtonPrivate *priv;
  gchar *label_text;
  GSList *paths;

  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (button);
  paths = _gtk_file_chooser_get_paths (GTK_FILE_CHOOSER (button->priv->dialog));
  label_text = NULL;
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  if (paths)
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    {
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      GtkFileSystem *fs;
      GtkFilePath *path;
      GtkFileSystemVolume *volume;
    
      path = paths->data;
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      fs = _gtk_file_chooser_get_file_system (GTK_FILE_CHOOSER (priv->dialog));
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      volume = gtk_file_system_get_volume_for_path (fs, path);
      if (volume)
	{
	  GtkFilePath *base_path;

	  base_path = gtk_file_system_volume_get_base_path (fs, volume);
	  if (base_path && gtk_file_path_compare (base_path, path) == 0)
	    label_text = gtk_file_system_volume_get_display_name (fs, volume);

	  if (base_path)
	    gtk_file_path_free (base_path);

	  gtk_file_system_volume_free (fs, volume);

	  if (label_text)
	    goto out;
	}
    
      if (gtk_file_system_path_is_local (fs, path))
	{
	  const gchar *home;
	  gchar *tmp;
	  gchar *filename;

          filename = gtk_file_system_path_to_filename (fs, path);

	  if (!filename)
	    goto out;

	  home = g_get_home_dir ();

	  /* Munging for psuedo-volumes and files in the user's home tree */
	  if (home)
	    {
	      if (strcmp (filename, home) == 0)
		{
		  label_text = g_strdup (_("Home"));
		  goto localout;
		}

	      tmp = g_build_filename (home, "Desktop", NULL);

	      if (strcmp (filename, tmp) == 0)
		label_text = g_strdup (_("Desktop"));

	      g_free (tmp);
1240

1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275
	      if (label_text)
		goto out;

	      if (g_str_has_prefix (filename, home))
		{
		  label_text = g_strconcat ("~", filename + strlen (home), NULL);
		  goto localout;
		}
	    }

	  if (!label_text)
	    label_text = g_strdup (filename);

	 localout:
	  g_free (filename);
	}
      else
	{
	  gchar *uri;

	  uri = gtk_file_system_path_to_uri (fs, path);

	  if (uri)
	    label_text = uri;
	}

     out:
      gtk_file_paths_free (paths);
    }

  if (label_text)
    {
      gtk_label_set_text (GTK_LABEL (priv->label), label_text);
      g_free (label_text);
    }
1276
  else
1277
    gtk_label_set_text (GTK_LABEL (priv->label), _(DEFAULT_FILENAME));
1278 1279
}

1280 1281
static void
update_entry (GtkFileChooserButton *button)
1282 1283
{
  GtkFileChooserButtonPrivate *priv;
1284 1285
  GSList *paths;
  gchar *filename;
1286

1287
  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (button);
1288

1289
  paths = _gtk_file_chooser_get_paths (GTK_FILE_CHOOSER (priv->dialog));
1290

1291 1292 1293 1294 1295 1296 1297 1298 1299
  if (paths)
    {
      GtkFileSystem *fs;
      GtkFilePath *path;
    
      path = paths->data;
      fs = _gtk_file_chooser_get_file_system (GTK_FILE_CHOOSER (priv->dialog));
    
      if (gtk_file_system_path_is_local (fs, path))
1300
	{
1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323
	  filename = gtk_file_system_path_to_filename (fs, path);

	  if (filename)
	    {
	      const gchar *home;
	      gchar *tmp;

	      if (g_file_test (filename, G_FILE_TEST_IS_DIR))
		{
		  tmp = g_strconcat (filename, "/", NULL);
		  g_free (filename);
		  filename = tmp;
		}

	      home = g_get_home_dir ();

	      if (home && g_str_has_prefix (filename, home))
		{
		  tmp = g_strconcat ("~", filename + strlen (home), NULL);
		  g_free (filename);
		  filename = tmp;
		}
	    }
1324
	}
1325 1326
      else
	filename = gtk_file_system_path_to_uri (fs, path);
1327 1328
    }
  else
1329 1330 1331
    filename = NULL;

  if (filename)
1332
    {
1333 1334 1335 1336 1337 1338 1339
      gchar *entry_text;
    
      entry_text = g_filename_to_utf8 (filename, -1, NULL, NULL, NULL);
      g_free (filename);

      gtk_entry_set_text (GTK_ENTRY (priv->entry), entry_text);
      g_free (entry_text);
1340
    }
1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365
  else
    gtk_entry_set_text (GTK_ENTRY (priv->entry), "");
}

static void
update_dialog (GtkFileChooserButton *button)
{
  GtkFileChooserButtonPrivate *priv;
  GtkFilePath *current_folder;
  GtkFileSystem *fs;
  GtkFilePath *folder_part, *full_path;
  gchar *file_part;
  const gchar *text;
  GtkFilePath *base_path;

  priv = GTK_FILE_CHOOSER_BUTTON_GET_PRIVATE (button);
  file_part = NULL;
  folder_part = NULL;
  fs = _gtk_file_chooser_get_file_system (GTK_FILE_CHOOSER (priv->dialog));

  text = gtk_entry_get_text (GTK_ENTRY (priv->entry));

  base_path = gtk_file_path_new_dup ("/");
  gtk_file_system_parse (fs, base_path, text, &folder_part, &file_part, NULL);
  gtk_file_path_free (base_path);
1366 1367 1368 1369

  switch (gtk_file_chooser_get_action (GTK_FILE_CHOOSER (priv->dialog)))
    {
    case GTK_FILE_CHOOSER_ACTION_OPEN:
1370 1371
      gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER (priv->dialog));
      if (folder_part)
1372 1373 1374 1375
	{
	  GtkFileFolder *folder;
	  GtkFileInfo *info;

1376
	  folder = gtk_file_system_get_folder (fs, folder_part,
1377 1378
					       GTK_FILE_INFO_IS_FOLDER, NULL);

1379
	  full_path = gtk_file_system_make_path (fs, folder_part, file_part, NULL);
1380 1381 1382 1383 1384
	  info = gtk_file_folder_get_info (folder, full_path, NULL);

	  /* Entry contents don't exist. */
	  if (info == NULL)
	    _gtk_file_chooser_set_current_folder_path (GTK_FILE_CHOOSER (priv->dialog),
1385
						       folder_part, NULL);
1386 1387 1388 1389 1390 1391 1392 1393
	  /* Entry contents are a folder */
	  else if (gtk_file_info_get_is_folder (info))
	    _gtk_file_chooser_set_current_folder_path (GTK_FILE_CHOOSER (priv->dialog),
						       full_path, NULL);
	  /* Entry contents must be a file. */
	  else
	    _gtk_file_chooser_select_path (GTK_FILE_CHOOSER (priv->dialog),
					   full_path, NULL);
1394

1395 1396
	  if (info)
	    gtk_file_info_free (info);
1397

1398 1399 1400 1401
	  gtk_file_path_free (full_path);
	}
      break;
    case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
1402 1403
      gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER (priv->dialog));
      if (folder_part)
1404
	{