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

/* GTK - The GIMP Toolkit

 * gtkfilechooserdialog.c: File selector dialog

 * Copyright (C) 2003, Red Hat, Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser 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.

 */

#include "config.h"

#include "gtkfilechooserprivate.h"

#include "gtkfilechooserdialog.h"

#include "gtkfilechooserwidget.h"

#include "gtkfilechooserutils.h"

#include "gtkfilechooserembed.h"

#include "gtkfilechoosersettings.h"

#include "gtkfilesystem.h"

#include "gtktypebuiltins.h"

#include "gtkintl.h"

#include "gtkalias.h"

#include <stdarg.h>

#define GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE(o)  (GTK_FILE_CHOOSER_DIALOG (o)->priv)

static void gtk_file_chooser_dialog_finalize   (GObject                   *object);

static GObject* gtk_file_chooser_dialog_constructor  (GType                  type,

						      guint                  n_construct_properties,

						      GObjectConstructParam *construct_params);

static void     gtk_file_chooser_dialog_set_property (GObject               *object,

						      guint                  prop_id,

						      const GValue          *value,

						      GParamSpec            *pspec);

static void     gtk_file_chooser_dialog_get_property (GObject               *object,

						      guint                  prop_id,

						      GValue                *value,

						      GParamSpec            *pspec);

static void     gtk_file_chooser_dialog_map          (GtkWidget             *widget);

static void response_cb (GtkDialog *dialog,

			 gint       response_id);

G_DEFINE_TYPE_WITH_CODE (GtkFileChooserDialog, gtk_file_chooser_dialog, GTK_TYPE_DIALOG,

			 G_IMPLEMENT_INTERFACE (GTK_TYPE_FILE_CHOOSER,

						_gtk_file_chooser_delegate_iface_init))

static void

gtk_file_chooser_dialog_class_init (GtkFileChooserDialogClass *class)

{

  GObjectClass *gobject_class = G_OBJECT_CLASS (class);

  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);

  gobject_class->constructor = gtk_file_chooser_dialog_constructor;

  gobject_class->set_property = gtk_file_chooser_dialog_set_property;

  gobject_class->get_property = gtk_file_chooser_dialog_get_property;

  gobject_class->finalize = gtk_file_chooser_dialog_finalize;

  widget_class->map       = gtk_file_chooser_dialog_map;

  _gtk_file_chooser_install_properties (gobject_class);

  g_type_class_add_private (class, sizeof (GtkFileChooserDialogPrivate));

}

static void

gtk_file_chooser_dialog_init (GtkFileChooserDialog *dialog)

{

  GtkFileChooserDialogPrivate *priv = G_TYPE_INSTANCE_GET_PRIVATE (dialog,

								   GTK_TYPE_FILE_CHOOSER_DIALOG,

								   GtkFileChooserDialogPrivate);

  GtkDialog *fc_dialog = GTK_DIALOG (dialog);

  dialog->priv = priv;

  dialog->priv->response_requested = FALSE;

  gtk_dialog_set_has_separator (fc_dialog, FALSE);

  gtk_container_set_border_width (GTK_CONTAINER (fc_dialog), 5);

  gtk_box_set_spacing (GTK_BOX (fc_dialog->vbox), 2); /* 2 * 5 + 2 = 12 */

  gtk_container_set_border_width (GTK_CONTAINER (fc_dialog->action_area), 5);

  gtk_window_set_role (GTK_WINDOW (dialog), "GtkFileChooserDialog");

  /* We do a signal connection here rather than overriding the method in

   * class_init because GtkDialog::response is a RUN_LAST signal.  We want *our*

   * handler to be run *first*, regardless of whether the user installs response

   * handlers of his own.

   */

  g_signal_connect (dialog, "response",

		    G_CALLBACK (response_cb), NULL);

}

static void

gtk_file_chooser_dialog_finalize (GObject *object)

{

  GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (object);

  g_free (dialog->priv->file_system);

  G_OBJECT_CLASS (gtk_file_chooser_dialog_parent_class)->finalize (object);  

}

static gboolean

is_stock_accept_response_id (int response_id)

{

  return (response_id == GTK_RESPONSE_ACCEPT

	  || response_id == GTK_RESPONSE_OK

	  || response_id == GTK_RESPONSE_YES

	  || response_id == GTK_RESPONSE_APPLY);

}

/* Callback used when the user activates a file in the file chooser widget */

static void

file_chooser_widget_file_activated (GtkFileChooser       *chooser,

				    GtkFileChooserDialog *dialog)

{

  GList *children, *l;

  if (gtk_window_activate_default (GTK_WINDOW (dialog)))

    return;

  /* There probably isn't a default widget, so make things easier for the

   * programmer by looking for a reasonable button on our own.

   */

  children = gtk_container_get_children (GTK_CONTAINER (GTK_DIALOG (dialog)->action_area));

  for (l = children; l; l = l->next)

    {

      GtkWidget *widget;

      int response_id;

      widget = GTK_WIDGET (l->data);

      response_id = gtk_dialog_get_response_for_widget (GTK_DIALOG (dialog), widget);

      if (is_stock_accept_response_id (response_id))

	{

	  gtk_widget_activate (widget); /* Should we gtk_dialog_response (dialog, response_id) instead? */

	  break;

	}

    }

  g_list_free (children);

}

#if 0

/* FIXME: to see why this function is ifdef-ed out, see the comment below in

 * file_chooser_widget_default_size_changed().

 */

static void

load_position (int *out_xpos, int *out_ypos)

{

  GtkFileChooserSettings *settings;

  int x, y, width, height;

  settings = _gtk_file_chooser_settings_new ();

  _gtk_file_chooser_settings_get_geometry (settings, &x, &y, &width, &height);

  g_object_unref (settings);

  *out_xpos = x;

  *out_ypos = y;

}

#endif

static void

file_chooser_widget_default_size_changed (GtkWidget            *widget,

					  GtkFileChooserDialog *dialog)

{

  GtkFileChooserDialogPrivate *priv;

  gint default_width, default_height;

  GtkRequisition req, widget_req;

  priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (dialog);

  /* Unset any previously set size */

  gtk_widget_set_size_request (GTK_WIDGET (dialog), -1, -1);

  if (gtk_widget_is_drawable (widget))

    {

      /* Force a size request of everything before we start.  This will make sure

       * that widget->requisition is meaningful. */

      gtk_widget_size_request (GTK_WIDGET (dialog), &req;;

      gtk_widget_size_request (widget, &widget_req);

    }

  _gtk_file_chooser_embed_get_default_size (GTK_FILE_CHOOSER_EMBED (priv->widget),

					    &default_width, &default_height);

  gtk_window_resize (GTK_WINDOW (dialog), default_width, default_height);

  if (!gtk_widget_get_mapped (GTK_WIDGET (dialog)))

    {

#if 0

      /* FIXME: the code to restore the position does not work yet.  It is not

       * clear whether it is actually desirable --- if enabled, applications

       * would not be able to say "center the file chooser on top of my toplevel

       * window".  So, we don't use this code at all.

       */

      load_position (&xpos, &ypos);

      if (xpos >= 0 && ypos >= 0)

	{

	  gtk_window_set_position (GTK_WINDOW (dialog), GTK_WIN_POS_NONE);

	  gtk_window_move (GTK_WINDOW (dialog), xpos, ypos);

	}

#endif

    }

}

static void

file_chooser_widget_response_requested (GtkWidget            *widget,

					GtkFileChooserDialog *dialog)

{

  GList *children, *l;

  dialog->priv->response_requested = TRUE;

  if (gtk_window_activate_default (GTK_WINDOW (dialog)))

    return;

  /* There probably isn't a default widget, so make things easier for the

   * programmer by looking for a reasonable button on our own.

   */

  children = gtk_container_get_children (GTK_CONTAINER (GTK_DIALOG (dialog)->action_area));

  for (l = children; l; l = l->next)

    {

      GtkWidget *widget;

      int response_id;

      widget = GTK_WIDGET (l->data);

      response_id = gtk_dialog_get_response_for_widget (GTK_DIALOG (dialog), widget);

      if (is_stock_accept_response_id (response_id))

	{

	  gtk_widget_activate (widget); /* Should we gtk_dialog_response (dialog, response_id) instead? */

	  break;

	}

    }

  if (l == NULL)

    dialog->priv->response_requested = FALSE;

  g_list_free (children);

}

static GObject*

gtk_file_chooser_dialog_constructor (GType                  type,

				     guint                  n_construct_properties,

				     GObjectConstructParam *construct_params)

{

  GtkFileChooserDialogPrivate *priv;

  GObject *object;

  object = G_OBJECT_CLASS (gtk_file_chooser_dialog_parent_class)->constructor (type,

									       n_construct_properties,

									       construct_params);

  priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);

  gtk_widget_push_composite_child ();

  if (priv->file_system)

    priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET,

				 "file-system-backend", priv->file_system,

				 NULL);

  else

    priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET, NULL);

  g_signal_connect (priv->widget, "file-activated",

		    G_CALLBACK (file_chooser_widget_file_activated), object);

  g_signal_connect (priv->widget, "default-size-changed",

		    G_CALLBACK (file_chooser_widget_default_size_changed), object);

  g_signal_connect (priv->widget, "response-requested",

		    G_CALLBACK (file_chooser_widget_response_requested), object);

  gtk_container_set_border_width (GTK_CONTAINER (priv->widget), 5);

  gtk_box_pack_start (GTK_BOX (GTK_DIALOG (object)->vbox), priv->widget, TRUE, TRUE, 0);

  gtk_widget_show (priv->widget);

  _gtk_file_chooser_set_delegate (GTK_FILE_CHOOSER (object),

				  GTK_FILE_CHOOSER (priv->widget));

  gtk_widget_pop_composite_child ();

  return object;

}

static void

gtk_file_chooser_dialog_set_property (GObject         *object,

				      guint            prop_id,

				      const GValue    *value,

				      GParamSpec      *pspec)

{

  GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);

  switch (prop_id)

    {

    case GTK_FILE_CHOOSER_PROP_FILE_SYSTEM_BACKEND:

      g_free (priv->file_system);

      priv->file_system = g_value_dup_string (value);

      break;

    default:

      g_object_set_property (G_OBJECT (priv->widget), pspec->name, value);

      break;

    }

}

static void

gtk_file_chooser_dialog_get_property (GObject         *object,

				      guint            prop_id,

				      GValue          *value,

				      GParamSpec      *pspec)

{

  GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);

  g_object_get_property (G_OBJECT (priv->widget), pspec->name, value);

}

static void

foreach_ensure_default_response_cb (GtkWidget *widget,

				    gpointer   data)

{

  GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (data);

  int response_id;

  response_id = gtk_dialog_get_response_for_widget (GTK_DIALOG (dialog), widget);

  if (is_stock_accept_response_id (response_id))

    gtk_dialog_set_default_response (GTK_DIALOG (dialog), response_id);

}

static void

ensure_default_response (GtkFileChooserDialog *dialog)

{

  gtk_container_foreach (GTK_CONTAINER (GTK_DIALOG (dialog)->action_area),

			 foreach_ensure_default_response_cb,

			 dialog);

}

/* GtkWidget::map handler */

static void

gtk_file_chooser_dialog_map (GtkWidget *widget)

{

  GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (widget);

  GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (dialog);

  ensure_default_response (dialog);

  _gtk_file_chooser_embed_initial_focus (GTK_FILE_CHOOSER_EMBED (priv->widget));

  GTK_WIDGET_CLASS (gtk_file_chooser_dialog_parent_class)->map (widget);

}

/* GtkDialog::response handler */

static void

response_cb (GtkDialog *dialog,

	     gint       response_id)

{

  GtkFileChooserDialogPrivate *priv;

  priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (dialog);

  /* Act only on response IDs we recognize */

  if (is_stock_accept_response_id (response_id)

      && !priv->response_requested

      && !_gtk_file_chooser_embed_should_respond (GTK_FILE_CHOOSER_EMBED (priv->widget)))

    {

      g_signal_stop_emission_by_name (dialog, "response");

    }

  priv->response_requested = FALSE;

}

static GtkWidget *

gtk_file_chooser_dialog_new_valist (const gchar          *title,

				    GtkWindow            *parent,

				    GtkFileChooserAction  action,

				    const gchar          *backend,

				    const gchar          *first_button_text,

				    va_list               varargs)

{

  GtkWidget *result;

  const char *button_text = first_button_text;

  gint response_id;

  result = g_object_new (GTK_TYPE_FILE_CHOOSER_DIALOG,

			 "title", title,

			 "action", action,

			 NULL);

  if (parent)

    gtk_window_set_transient_for (GTK_WINDOW (result), parent);

  while (button_text)

    {

      response_id = va_arg (varargs, gint);

      gtk_dialog_add_button (GTK_DIALOG (result), button_text, response_id);

      button_text = va_arg (varargs, const gchar *);

    }

  return result;

}

/**

 * gtk_file_chooser_dialog_new:

 * @title: (allow-none): Title of the dialog, or %NULL

 * @parent: (allow-none): Transient parent of the dialog, or %NULL

 * @action: Open or save mode for the dialog

 * @first_button_text: (allow-none): stock ID or text to go in the first button, or %NULL

 * @Varargs: response ID for the first button, then additional (button, id) pairs, ending with %NULL

 *

 * Creates a new #GtkFileChooserDialog.  This function is analogous to

 * gtk_dialog_new_with_buttons().

 *

 * Return value: a new #GtkFileChooserDialog

 *

 * Since: 2.4

 **/

GtkWidget *

gtk_file_chooser_dialog_new (const gchar         *title,

			     GtkWindow           *parent,

			     GtkFileChooserAction action,

			     const gchar         *first_button_text,

			     ...)

{

  GtkWidget *result;

  va_list varargs;

  va_start (varargs, first_button_text);

  result = gtk_file_chooser_dialog_new_valist (title, parent, action,

					       NULL, first_button_text,

					       varargs);

  va_end (varargs);

  return result;

}

/**

 * gtk_file_chooser_dialog_new_with_backend:

 * @title: (allow-none): Title of the dialog, or %NULL

 * @parent: (allow-none): Transient parent of the dialog, or %NULL

 * @action: Open or save mode for the dialog

 * @backend: The name of the specific filesystem backend to use.

 * @first_button_text: (allow-none): stock ID or text to go in the first button, or %NULL

 * @Varargs: response ID for the first button, then additional (button, id) pairs, ending with %NULL

 *

 * Creates a new #GtkFileChooserDialog with a specified backend. This is

 * especially useful if you use gtk_file_chooser_set_local_only() to allow

 * non-local files and you use a more expressive vfs, such as gnome-vfs,

 * to load files.

 *

 * Return value: a new #GtkFileChooserDialog

 *

 * Since: 2.4

 * Deprecated: 2.14: Use gtk_file_chooser_dialog_new() instead.

 **/

GtkWidget *

gtk_file_chooser_dialog_new_with_backend (const gchar          *title,

					  GtkWindow            *parent,

					  GtkFileChooserAction  action,

					  const gchar          *backend,

					  const gchar          *first_button_text,

					  ...)

{

  GtkWidget *result;

  va_list varargs;

  va_start (varargs, first_button_text);

  result = gtk_file_chooser_dialog_new_valist (title, parent, action,

					       backend, first_button_text,

					       varargs);

  va_end (varargs);

  return result;

}

#define __GTK_FILE_CHOOSER_DIALOG_C__

#include "gtkaliasdef.c"