Cppcheck report - lapiz (cppcheck 2.14.0-1+b1): lapiz/lapiz-io-error-message-area.c

/*
 * lapiz-io-error-message-area.c
 * This file is part of lapiz
 *
 * Copyright (C) 2005 - Paolo Maggi
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

/*
 * Modified by the lapiz Team, 2005. See the AUTHORS file for a
 * list of people on the lapiz Team.
 * See the ChangeLog files for a list of changes.
 *
 * $Id$
 */

/*
 * Verbose error reporting for file I/O operations (load, save, revert, create)
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>
#include <string.h>

#include <glib/gi18n.h>
#include <gio/gio.h>

#include "lapiz-utils.h"
#include "lapiz-document.h"
#include "lapiz-io-error-message-area.h"
#include "lapiz-prefs-manager.h"
#include <lapiz/lapiz-encodings-combo-box.h>

#define MAX_URI_IN_DIALOG_LENGTH 50

static gboolean
is_recoverable_error (const GError *error)
{
	gboolean is_recoverable = FALSE;

	if (error->domain == G_IO_ERROR)
	{
		switch (error->code) {
		case G_IO_ERROR_PERMISSION_DENIED:
		case G_IO_ERROR_NOT_FOUND:
		case G_IO_ERROR_HOST_NOT_FOUND:
		case G_IO_ERROR_TIMED_OUT:
		case G_IO_ERROR_NOT_MOUNTABLE_FILE:
		case G_IO_ERROR_NOT_MOUNTED:
		case G_IO_ERROR_BUSY:
			is_recoverable = TRUE;
		}
	}

	return is_recoverable;
}

static gboolean
is_gio_error (const GError *error,
	      gint          code)
{
	return error->domain == G_IO_ERROR && error->code == code;
}

static void
set_contents (CtkWidget *area,
	      CtkWidget *contents)
{
	CtkWidget *content_area;

	content_area = ctk_info_bar_get_content_area (CTK_INFO_BAR (area));
	ctk_container_add (CTK_CONTAINER (content_area), contents);
}

static void
info_bar_add_icon_button_with_text (CtkInfoBar  *infobar,
				    const gchar *text,
				    const gchar *icon_id,
				    gint         response_id)
{
	CtkWidget *button;
	CtkWidget *image;

	button = ctk_info_bar_add_button (infobar, text, response_id);
	image = ctk_image_new_from_icon_name (icon_id, CTK_ICON_SIZE_BUTTON);
	ctk_button_set_image (CTK_BUTTON (button), image);
}

static void
set_message_area_text_and_icon (CtkWidget   *message_area,
				const gchar *icon_name,
				const gchar *primary_text,
				const gchar *secondary_text)
{
	CtkWidget *hbox_content;
	CtkWidget *image;
	CtkWidget *vbox;
	gchar *primary_markup;
	CtkWidget *primary_label;

	hbox_content = ctk_box_new (CTK_ORIENTATION_HORIZONTAL, 8);

	image = ctk_image_new_from_icon_name (icon_name, CTK_ICON_SIZE_DIALOG);
	ctk_box_pack_start (CTK_BOX (hbox_content), image, FALSE, FALSE, 0);
	ctk_widget_set_halign (image, CTK_ALIGN_CENTER);
	ctk_widget_set_valign (image, CTK_ALIGN_START);

	vbox = ctk_box_new (CTK_ORIENTATION_VERTICAL, 6);
	ctk_box_pack_start (CTK_BOX (hbox_content), vbox, TRUE, TRUE, 0);

	primary_markup = g_strdup_printf ("<b>%s</b>", primary_text);
	primary_label = ctk_label_new (primary_markup);
	g_free (primary_markup);
	ctk_box_pack_start (CTK_BOX (vbox), primary_label, TRUE, TRUE, 0);
	ctk_label_set_use_markup (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_line_wrap (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_xalign (CTK_LABEL (primary_label), 0.0);
	ctk_widget_set_can_focus (primary_label, TRUE);
	ctk_label_set_selectable (CTK_LABEL (primary_label), TRUE);

	if (secondary_text != NULL)
	{
		gchar *secondary_markup;
		CtkWidget *secondary_label;

		secondary_markup = g_strdup_printf ("<small>%s</small>",
						    secondary_text);
		secondary_label = ctk_label_new (secondary_markup);
		g_free (secondary_markup);
		ctk_box_pack_start (CTK_BOX (vbox), secondary_label, TRUE, TRUE, 0);
		ctk_widget_set_can_focus (secondary_label, TRUE);
		ctk_label_set_use_markup (CTK_LABEL (secondary_label), TRUE);
		ctk_label_set_line_wrap (CTK_LABEL (secondary_label), TRUE);
		ctk_label_set_selectable (CTK_LABEL (secondary_label), TRUE);
		ctk_label_set_xalign (CTK_LABEL (secondary_label), 0.0);
	}

	ctk_widget_show_all (hbox_content);
	set_contents (message_area, hbox_content);
}

static CtkWidget *
create_io_loading_error_message_area (const gchar *primary_text,
				      const gchar *secondary_text,
				      gboolean     recoverable_error)
{
	CtkWidget *message_area;

	message_area = ctk_info_bar_new ();

	ctk_button_set_image (CTK_BUTTON (ctk_info_bar_add_button (CTK_INFO_BAR (message_area),
								   _("_Cancel"),
								   CTK_RESPONSE_CANCEL)),
			      ctk_image_new_from_icon_name ("process-stop", CTK_ICON_SIZE_BUTTON));

	ctk_info_bar_set_message_type (CTK_INFO_BAR (message_area),
				       CTK_MESSAGE_ERROR);

	set_message_area_text_and_icon (message_area,
					"dialog-error",
					primary_text,
					secondary_text);

	if (recoverable_error)
	{
		info_bar_add_icon_button_with_text (CTK_INFO_BAR (message_area),
						    _("_Retry"),
						    "view-refresh",
						    CTK_RESPONSE_OK);
	}

	return message_area;
}

static gboolean
parse_gio_error (gint          code,
	         gchar       **error_message,
	         gchar       **message_details,
	         const gchar  *uri,
	         const gchar  *uri_for_display)
{
	gboolean ret = TRUE;

	switch (code)
	{
	case G_IO_ERROR_NOT_FOUND:
	case G_IO_ERROR_NOT_DIRECTORY:
		*error_message = g_strdup_printf (_("Could not find the file %s."),
						  uri_for_display);
		*message_details = g_strdup (_("Please check that you typed the "
				      	       "location correctly and try again."));
		break;
	case G_IO_ERROR_NOT_SUPPORTED:
		{
			gchar *scheme_string;

			scheme_string = g_uri_parse_scheme (uri);

			if ((scheme_string != NULL) && g_utf8_validate (scheme_string, -1, NULL))
			{
				gchar *scheme_markup;

				scheme_markup = g_markup_printf_escaped ("<i>%s:</i>", scheme_string);

				/* Translators: %s is a URI scheme (like for example http:, ftp:, etc.) */
				*message_details = g_strdup_printf (_("lapiz cannot handle %s locations."),
								   scheme_markup);
				g_free (scheme_markup);
			}
			else
			{
				*message_details = g_strdup (_("lapiz cannot handle this location."));
			}

			g_free (scheme_string);
		}
		break;

	case G_IO_ERROR_NOT_MOUNTABLE_FILE:
		*message_details = g_strdup (_("The location of the file cannot be mounted."));
		break;

	case G_IO_ERROR_NOT_MOUNTED:
		*message_details = g_strdup( _("The location of the file cannot be accessed because it is not mounted."));

		break;
	case G_IO_ERROR_IS_DIRECTORY:
		*error_message = g_strdup_printf (_("%s is a directory."),
						 uri_for_display);
		*message_details = g_strdup (_("Please check that you typed the "
					      "location correctly and try again."));
		break;

	case G_IO_ERROR_INVALID_FILENAME:
		*error_message = g_strdup_printf (_("%s is not a valid location."),
						 uri_for_display);
		*message_details = g_strdup (_("Please check that you typed the "
					      "location correctly and try again."));
		break;

	case G_IO_ERROR_HOST_NOT_FOUND:
		/* This case can be hit for user-typed strings like "foo" due to
		 * the code that guesses web addresses when there's no initial "/".
		 * But this case is also hit for legiticafe web addresses when
		 * the proxy is set up wrong.
		 */
		{
			gchar *hn = NULL;

			if (lapiz_utils_decode_uri (uri, NULL, NULL, &hn, NULL, NULL))
			{
				if (hn != NULL)
				{
					gchar *host_markup;
					gchar *host_name;

					host_name = lapiz_utils_make_valid_utf8 (hn);
					g_free (hn);

					host_markup = g_markup_printf_escaped ("<i>%s</i>", host_name);
					g_free (host_name);

					/* Translators: %s is a host name */
					*message_details = g_strdup_printf (
						_("Host %s could not be found. "
						"Please check that your proxy settings "
						"are correct and try again."),
						host_markup);

					g_free (host_markup);
				}
			}

			if (!*message_details)
			{
				/* use the same string as INVALID_HOST */
				*message_details = g_strdup_printf (
					_("Hostname was invalid. "
					  "Please check that you typed the location "
					  "correctly and try again."));
			}
		}
		break;

	case G_IO_ERROR_NOT_REGULAR_FILE:
		*message_details = g_strdup_printf (_("%s is not a regular file."),
						   uri_for_display);
		break;

	case G_IO_ERROR_TIMED_OUT:
		*message_details = g_strdup (_("Connection timed out. Please try again."));
		break;

	default:
		ret = FALSE;
		break;
	}

	return ret;
}

static gboolean
parse_lapiz_error (gint          code,
	           gchar       **error_message G_GNUC_UNUSED,
	           gchar       **message_details,
	           const gchar  *uri G_GNUC_UNUSED,
	           const gchar  *uri_for_display G_GNUC_UNUSED)
{
	gboolean ret = TRUE;

	switch (code)
	{
	case LAPIZ_DOCUMENT_ERROR_TOO_BIG:
		*message_details = g_strdup (_("The file is too big."));
		break;

	default:
		ret = FALSE;
		break;
	}

	return ret;
}

static void
parse_error (const GError *error,
	     gchar       **error_message,
	     gchar       **message_details,
	     const gchar  *uri,
	     const gchar  *uri_for_display)
{
	gboolean ret = FALSE;

	if (error->domain == G_IO_ERROR)
	{
		ret = parse_gio_error (error->code,
				       error_message,
				       message_details,
				       uri,
				       uri_for_display);
	}
	else if (error->domain == LAPIZ_DOCUMENT_ERROR)
	{
		ret = parse_lapiz_error (error->code,
					 error_message,
					 message_details,
					 uri,
					 uri_for_display);
	}

	if (!ret)
	{
		g_warning ("Hit unhandled case %d (%s) in %s.",
			   error->code, error->message, G_STRFUNC);
		*message_details = g_strdup_printf (_("Unexpected error: %s"),
						   error->message);
	}
}

CtkWidget *
lapiz_unrecoverable_reverting_error_message_area_new (const gchar  *uri,
						      const GError *error)
{
	gchar *error_message = NULL;
	gchar *message_details = NULL;
	gchar *full_formatted_uri;
	gchar *uri_for_display;
	gchar *temp_uri_for_display;
	CtkWidget *message_area;

	g_return_val_if_fail (uri != NULL, NULL);
	g_return_val_if_fail (error != NULL, NULL);
	g_return_val_if_fail ((error->domain == LAPIZ_DOCUMENT_ERROR) ||
			      (error->domain == G_IO_ERROR), NULL);

	full_formatted_uri = lapiz_utils_uri_for_display (uri);

	/* Truncate the URI so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the URI doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	temp_uri_for_display = lapiz_utils_str_middle_truncate (full_formatted_uri,
								MAX_URI_IN_DIALOG_LENGTH);
	g_free (full_formatted_uri);

	uri_for_display = g_markup_printf_escaped ("<i>%s</i>", temp_uri_for_display);
	g_free (temp_uri_for_display);

	if (is_gio_error (error, G_IO_ERROR_NOT_FOUND))
	{
		message_details = g_strdup (_("lapiz cannot find the file. "
					      "Perhaps it has recently been deleted."));
	}
	else
	{
		parse_error (error, &error_message, &message_details, uri, uri_for_display);
	}

	if (error_message == NULL)
	{
		error_message = g_strdup_printf (_("Could not revert the file %s."),
						 uri_for_display);
	}

	message_area = create_io_loading_error_message_area (error_message,
							     message_details,
							     FALSE);

	g_free (uri_for_display);
	g_free (error_message);
	g_free (message_details);

	return message_area;
}

static void
create_combo_box (CtkWidget *message_area, CtkWidget *vbox)
{
	CtkWidget *hbox;
	CtkWidget *label;
	CtkWidget *menu;
	gchar *label_markup;

	hbox = ctk_box_new (CTK_ORIENTATION_HORIZONTAL, 6);

	label_markup = g_strdup_printf ("<small>%s</small>",
					_("Ch_aracter Encoding:"));
	label = ctk_label_new_with_mnemonic (label_markup);
	g_free (label_markup);
	ctk_label_set_use_markup (CTK_LABEL (label), TRUE);
	menu = lapiz_encodings_combo_box_new (TRUE);
	g_object_set_data (G_OBJECT (message_area),
			   "lapiz-message-area-encoding-menu",
			   menu);

	ctk_label_set_mnemonic_widget (CTK_LABEL (label), menu);
	ctk_box_pack_start (CTK_BOX (hbox),
			    label,
			    FALSE,
			    FALSE,
			    0);

	ctk_box_pack_start (CTK_BOX (hbox),
			    menu,
			    FALSE,
			    FALSE,
			    0);

	ctk_widget_show_all (hbox);
	ctk_box_pack_start (CTK_BOX (vbox), hbox, TRUE, TRUE, 0);
}

static CtkWidget *
create_conversion_error_message_area (const gchar *primary_text,
				      const gchar *secondary_text,
				      gboolean     edit_anyway)
{
	CtkWidget *message_area;
	CtkWidget *hbox_content;
	CtkWidget *image;
	CtkWidget *vbox;
	gchar *primary_markup;
	CtkWidget *primary_label;

	message_area = ctk_info_bar_new ();

	info_bar_add_icon_button_with_text (CTK_INFO_BAR (message_area),
					    _("_Retry"),
					    "edit-redo",
					    CTK_RESPONSE_OK);

	if (edit_anyway)
	{
		ctk_info_bar_add_button (CTK_INFO_BAR (message_area),
		/* Translators: the access key chosen for this string should be
		 different from other main menu access keys (Open, Edit, View...) */
					 _("Edit Any_way"),
					 CTK_RESPONSE_YES);
		ctk_info_bar_add_button (CTK_INFO_BAR (message_area),
		/* Translators: the access key chosen for this string should be
		 different from other main menu access keys (Open, Edit, View...) */
					 _("D_on't Edit"),
					 CTK_RESPONSE_NO);
		ctk_info_bar_set_message_type (CTK_INFO_BAR (message_area),
					       CTK_MESSAGE_WARNING);
	}
	else
	{
		ctk_button_set_image (CTK_BUTTON (ctk_info_bar_add_button (CTK_INFO_BAR (message_area),
									   _("_Cancel"),
									   CTK_RESPONSE_CANCEL)),
				      ctk_image_new_from_icon_name ("process-stop", CTK_ICON_SIZE_BUTTON));

		ctk_info_bar_set_message_type (CTK_INFO_BAR (message_area),
					       CTK_MESSAGE_ERROR);
	}

	hbox_content = ctk_box_new (CTK_ORIENTATION_HORIZONTAL, 8);

	image = ctk_image_new_from_icon_name ("dialog-error", CTK_ICON_SIZE_DIALOG);
	ctk_box_pack_start (CTK_BOX (hbox_content), image, FALSE, FALSE, 0);
	ctk_widget_set_halign (image, CTK_ALIGN_CENTER);
	ctk_widget_set_valign (image, CTK_ALIGN_START);

	vbox = ctk_box_new (CTK_ORIENTATION_VERTICAL, 6);
	ctk_box_pack_start (CTK_BOX (hbox_content), vbox, TRUE, TRUE, 0);

	primary_markup = g_strdup_printf ("<b>%s</b>", primary_text);
	primary_label = ctk_label_new (primary_markup);
	g_free (primary_markup);
	ctk_box_pack_start (CTK_BOX (vbox), primary_label, TRUE, TRUE, 0);
	ctk_label_set_use_markup (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_line_wrap (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_xalign (CTK_LABEL (primary_label), 0.0);
	ctk_widget_set_can_focus (primary_label, TRUE);
	ctk_label_set_selectable (CTK_LABEL (primary_label), TRUE);

	if (secondary_text != NULL)
	{
		gchar *secondary_markup;
		CtkWidget *secondary_label;

		secondary_markup = g_strdup_printf ("<small>%s</small>",
						    secondary_text);
		secondary_label = ctk_label_new (secondary_markup);
		g_free (secondary_markup);
		ctk_box_pack_start (CTK_BOX (vbox), secondary_label, TRUE, TRUE, 0);
		ctk_widget_set_can_focus (secondary_label, TRUE);
		ctk_label_set_use_markup (CTK_LABEL (secondary_label), TRUE);
		ctk_label_set_line_wrap (CTK_LABEL (secondary_label), TRUE);
		ctk_label_set_selectable (CTK_LABEL (secondary_label), TRUE);
		ctk_label_set_xalign (CTK_LABEL (secondary_label), 0.0);
	}

	create_combo_box (message_area, vbox);
	ctk_widget_show_all (hbox_content);
	set_contents (message_area, hbox_content);

	return message_area;
}

CtkWidget *
lapiz_io_loading_error_message_area_new (const gchar         *uri,
					 const LapizEncoding *encoding,
					 const GError        *error)
{
	gchar *error_message = NULL;
	gchar *message_details = NULL;
	gchar *full_formatted_uri;
	gchar *encoding_name;
	gchar *uri_for_display;
	gchar *temp_uri_for_display;
	CtkWidget *message_area;
	gboolean edit_anyway = FALSE;
	gboolean convert_error = FALSE;

	g_return_val_if_fail (uri != NULL, NULL);
	g_return_val_if_fail (error != NULL, NULL);
	g_return_val_if_fail ((error->domain == G_CONVERT_ERROR) ||
			      (error->domain == LAPIZ_DOCUMENT_ERROR) ||
			      (error->domain == G_IO_ERROR), NULL);

	full_formatted_uri = lapiz_utils_uri_for_display (uri);

	/* Truncate the URI so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the URI doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	temp_uri_for_display = lapiz_utils_str_middle_truncate (full_formatted_uri,
								MAX_URI_IN_DIALOG_LENGTH);
	g_free (full_formatted_uri);

	uri_for_display = g_markup_printf_escaped ("<i>%s</i>", temp_uri_for_display);
	g_free (temp_uri_for_display);

	if (encoding != NULL)
		encoding_name = lapiz_encoding_to_string (encoding);
	else
		encoding_name = g_strdup ("UTF-8");

	if (is_gio_error (error, G_IO_ERROR_TOO_MANY_LINKS))
	{
		message_details = g_strdup (_("The number of followed links is limited and the actual file could not be found within this limit."));
	}
	else if (is_gio_error (error, G_IO_ERROR_PERMISSION_DENIED))
	{
		message_details = g_strdup (_("You do not have the permissions necessary to open the file."));
	}
	else if ((is_gio_error (error, G_IO_ERROR_INVALID_DATA) && encoding == NULL) ||
	         (error->domain == LAPIZ_DOCUMENT_ERROR &&
	         error->code == LAPIZ_DOCUMENT_ERROR_ENCODING_AUTO_DETECTION_FAILED))
	{
		message_details = g_strconcat (_("lapiz has not been able to detect "
					         "the character encoding."), "\n",
					       _("Please check that you are not trying to open a binary file."), "\n",
					       _("Select a character encoding from the menu and try again."), NULL);
		convert_error = TRUE;
	}
	else if (error->domain == LAPIZ_DOCUMENT_ERROR &&
	         error->code == LAPIZ_DOCUMENT_ERROR_CONVERSION_FALLBACK)
	{
		error_message = g_strdup_printf (_("There was a problem opening the file %s."),
						 uri_for_display);
		message_details = g_strconcat (_("The file you opened has some invalid characters. "
					       "If you continue editing this file you could make this "
					       "document useless."), "\n",
					       _("You can also choose another character encoding and try again."),
					       NULL);
		edit_anyway = TRUE;
		convert_error = TRUE;
	}
	else if (is_gio_error (error, G_IO_ERROR_INVALID_DATA) && encoding != NULL)
	{
		error_message = g_strdup_printf (_("Could not open the file %s using the %s character encoding."),
						 uri_for_display,
						 encoding_name);
		message_details = g_strconcat (_("Please check that you are not trying to open a binary file."), "\n",
					       _("Select a different character encoding from the menu and try again."), NULL);
		convert_error = TRUE;
	}
	else
	{
		parse_error (error, &error_message, &message_details, uri, uri_for_display);
	}

	if (error_message == NULL)
	{
		error_message = g_strdup_printf (_("Could not open the file %s."),
						 uri_for_display);
	}

	if (convert_error)
	{
		message_area = create_conversion_error_message_area (error_message,
								     message_details,
								     edit_anyway);
	}
	else
	{
		message_area = create_io_loading_error_message_area (error_message,
								     message_details,
								     is_recoverable_error (error));
	}

	g_free (uri_for_display);
	g_free (encoding_name);
	g_free (error_message);
	g_free (message_details);

	return message_area;
}

CtkWidget *
lapiz_conversion_error_while_saving_message_area_new (
						const gchar         *uri,
						const LapizEncoding *encoding,
				    		const GError        *error)
{
	gchar *error_message = NULL;
	gchar *message_details = NULL;
	gchar *full_formatted_uri;
	gchar *encoding_name;
	gchar *uri_for_display;
	gchar *temp_uri_for_display;
	CtkWidget *message_area;

	g_return_val_if_fail (uri != NULL, NULL);
	g_return_val_if_fail (error != NULL, NULL);
	g_return_val_if_fail (error->domain == G_CONVERT_ERROR ||
	                      error->domain == G_IO_ERROR, NULL);
	g_return_val_if_fail (encoding != NULL, NULL);

	full_formatted_uri = lapiz_utils_uri_for_display (uri);

	/* Truncate the URI so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the URI doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	temp_uri_for_display = lapiz_utils_str_middle_truncate (full_formatted_uri,
								MAX_URI_IN_DIALOG_LENGTH);
	g_free (full_formatted_uri);

	uri_for_display = g_markup_printf_escaped ("<i>%s</i>", temp_uri_for_display);
	g_free (temp_uri_for_display);

	encoding_name = lapiz_encoding_to_string (encoding);

	error_message = g_strdup_printf (_("Could not save the file %s using the %s character encoding."),
					 uri_for_display,
					 encoding_name);
	message_details = g_strconcat (_("The document contains one or more characters that cannot be encoded "
					 "using the specified character encoding."), "\n",
				       _("Select a different character encoding from the menu and try again."), NULL);

	message_area = create_conversion_error_message_area (
								error_message,
								message_details,
								FALSE);

	g_free (uri_for_display);
	g_free (encoding_name);
	g_free (error_message);
	g_free (message_details);

	return message_area;
}

const LapizEncoding *
lapiz_conversion_error_message_area_get_encoding (CtkWidget *message_area)
{
	gpointer menu;

	g_return_val_if_fail (CTK_IS_INFO_BAR (message_area), NULL);

	menu = g_object_get_data (G_OBJECT (message_area),
				  "lapiz-message-area-encoding-menu");
	g_return_val_if_fail (menu, NULL);

	return lapiz_encodings_combo_box_get_selected_encoding
					(LAPIZ_ENCODINGS_COMBO_BOX (menu));
}

CtkWidget *
lapiz_file_already_open_warning_message_area_new (const gchar *uri)
{
	CtkWidget *message_area;
	CtkWidget *hbox_content;
	CtkWidget *image;
	CtkWidget *vbox;
	gchar *primary_markup;
	gchar *secondary_markup;
	CtkWidget *primary_label;
	CtkWidget *secondary_label;
	gchar *primary_text;
	const gchar *secondary_text;
	gchar *full_formatted_uri;
	gchar *uri_for_display;
	gchar *temp_uri_for_display;

	full_formatted_uri = lapiz_utils_uri_for_display (uri);

	/* Truncate the URI so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the URI doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	temp_uri_for_display = lapiz_utils_str_middle_truncate (full_formatted_uri,
								MAX_URI_IN_DIALOG_LENGTH);
	g_free (full_formatted_uri);

	uri_for_display = g_markup_printf_escaped ("<i>%s</i>", temp_uri_for_display);
	g_free (temp_uri_for_display);

	message_area = ctk_info_bar_new ();
	ctk_info_bar_add_button (CTK_INFO_BAR (message_area),
	/* Translators: the access key chosen for this string should be
	 different from other main menu access keys (Open, Edit, View...) */
				 _("Edit Any_way"),
				 CTK_RESPONSE_YES);
	ctk_info_bar_add_button (CTK_INFO_BAR (message_area),
	/* Translators: the access key chosen for this string should be
	 different from other main menu access keys (Open, Edit, View...) */
				 _("D_on't Edit"),
				 CTK_RESPONSE_CANCEL);
	ctk_info_bar_set_message_type (CTK_INFO_BAR (message_area),
				       CTK_MESSAGE_WARNING);

	hbox_content = ctk_box_new (CTK_ORIENTATION_HORIZONTAL, 8);

	image = ctk_image_new_from_icon_name ("dialog-warning", CTK_ICON_SIZE_DIALOG);
	ctk_box_pack_start (CTK_BOX (hbox_content), image, FALSE, FALSE, 0);
	ctk_widget_set_halign (image, CTK_ALIGN_CENTER);
	ctk_widget_set_valign (image, CTK_ALIGN_START);

	vbox = ctk_box_new (CTK_ORIENTATION_VERTICAL, 6);
	ctk_box_pack_start (CTK_BOX (hbox_content), vbox, TRUE, TRUE, 0);

	primary_text = g_strdup_printf (_("This file (%s) is already open in another lapiz window."), uri_for_display);
	g_free (uri_for_display);

	primary_markup = g_strdup_printf ("<b>%s</b>", primary_text);
	g_free (primary_text);
	primary_label = ctk_label_new (primary_markup);
	g_free (primary_markup);
	ctk_box_pack_start (CTK_BOX (vbox), primary_label, TRUE, TRUE, 0);
	ctk_label_set_use_markup (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_line_wrap (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_xalign (CTK_LABEL (primary_label), 0.0);
	ctk_widget_set_can_focus (primary_label, TRUE);
	ctk_label_set_selectable (CTK_LABEL (primary_label), TRUE);

	secondary_text = _("lapiz opened this instance of the file in a non-editable way. "
			   "Do you want to edit it anyway?");
	secondary_markup = g_strdup_printf ("<small>%s</small>",
					    secondary_text);
	secondary_label = ctk_label_new (secondary_markup);
	g_free (secondary_markup);
	ctk_box_pack_start (CTK_BOX (vbox), secondary_label, TRUE, TRUE, 0);
	ctk_widget_set_can_focus (secondary_label, TRUE);
	ctk_label_set_use_markup (CTK_LABEL (secondary_label), TRUE);
	ctk_label_set_line_wrap (CTK_LABEL (secondary_label), TRUE);
	ctk_label_set_selectable (CTK_LABEL (secondary_label), TRUE);
	ctk_label_set_xalign (CTK_LABEL (secondary_label), 0.0);

	ctk_widget_show_all (hbox_content);
	set_contents (message_area, hbox_content);

	return message_area;
}

CtkWidget *
lapiz_externally_modified_saving_error_message_area_new (
						const gchar  *uri,
						const GError *error)
{
	CtkWidget *message_area;
	CtkWidget *hbox_content;
	CtkWidget *image;
	CtkWidget *vbox;
	gchar *primary_markup;
	gchar *secondary_markup;
	CtkWidget *primary_label;
	CtkWidget *secondary_label;
	gchar *primary_text;
	const gchar *secondary_text;
	gchar *full_formatted_uri;
	gchar *uri_for_display;
	gchar *temp_uri_for_display;

	g_return_val_if_fail (uri != NULL, NULL);
	g_return_val_if_fail (error != NULL, NULL);
	g_return_val_if_fail (error->domain == LAPIZ_DOCUMENT_ERROR, NULL);
	g_return_val_if_fail (error->code == LAPIZ_DOCUMENT_ERROR_EXTERNALLY_MODIFIED, NULL);

	full_formatted_uri = lapiz_utils_uri_for_display (uri);

	/* Truncate the URI so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the URI doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	temp_uri_for_display = lapiz_utils_str_middle_truncate (full_formatted_uri,
								MAX_URI_IN_DIALOG_LENGTH);
	g_free (full_formatted_uri);

	uri_for_display = g_markup_printf_escaped ("<i>%s</i>", temp_uri_for_display);
	g_free (temp_uri_for_display);

	message_area = ctk_info_bar_new ();

	info_bar_add_icon_button_with_text (CTK_INFO_BAR (message_area),
					    _("S_ave Anyway"),
					    "document-save",
					    CTK_RESPONSE_YES);
	ctk_info_bar_add_button (CTK_INFO_BAR (message_area),
				 _("D_on't Save"),
				 CTK_RESPONSE_CANCEL);
	ctk_info_bar_set_message_type (CTK_INFO_BAR (message_area),
				       CTK_MESSAGE_WARNING);

	hbox_content = ctk_box_new (CTK_ORIENTATION_HORIZONTAL, 8);

	image = ctk_image_new_from_icon_name ("dialog-warning", CTK_ICON_SIZE_DIALOG);
	ctk_box_pack_start (CTK_BOX (hbox_content), image, FALSE, FALSE, 0);
	ctk_widget_set_halign (image, CTK_ALIGN_CENTER);
	ctk_widget_set_valign (image, CTK_ALIGN_START);

	vbox = ctk_box_new (CTK_ORIENTATION_VERTICAL, 6);
	ctk_box_pack_start (CTK_BOX (hbox_content), vbox, TRUE, TRUE, 0);

	// FIXME: review this message, it's not clear since for the user the "modification"
	// could be interpreted as the changes he made in the document. beside "reading" is
	// not accurate (since last load/save)
	primary_text = g_strdup_printf (_("The file %s has been modified since reading it."),
					uri_for_display);
	g_free (uri_for_display);

	primary_markup = g_strdup_printf ("<b>%s</b>", primary_text);
	g_free (primary_text);
	primary_label = ctk_label_new (primary_markup);
	g_free (primary_markup);
	ctk_box_pack_start (CTK_BOX (vbox), primary_label, TRUE, TRUE, 0);
	ctk_label_set_use_markup (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_line_wrap (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_xalign (CTK_LABEL (primary_label), 0.0);
	ctk_widget_set_can_focus (primary_label, TRUE);
	ctk_label_set_selectable (CTK_LABEL (primary_label), TRUE);

	secondary_text = _("If you save it, all the external changes could be lost. Save it anyway?");
	secondary_markup = g_strdup_printf ("<small>%s</small>",
					    secondary_text);
	secondary_label = ctk_label_new (secondary_markup);
	g_free (secondary_markup);
	ctk_box_pack_start (CTK_BOX (vbox), secondary_label, TRUE, TRUE, 0);
	ctk_widget_set_can_focus (secondary_label, TRUE);
	ctk_label_set_use_markup (CTK_LABEL (secondary_label), TRUE);
	ctk_label_set_line_wrap (CTK_LABEL (secondary_label), TRUE);
	ctk_label_set_selectable (CTK_LABEL (secondary_label), TRUE);
	ctk_label_set_xalign (CTK_LABEL (secondary_label), 0.0);

	ctk_widget_show_all (hbox_content);
	set_contents (message_area, hbox_content);

	return message_area;
}

CtkWidget *
lapiz_no_backup_saving_error_message_area_new (const gchar  *uri,
					       const GError *error)
{
	CtkWidget *message_area;
	CtkWidget *hbox_content;
	CtkWidget *image;
	CtkWidget *vbox;
	gchar *primary_markup;
	gchar *secondary_markup;
	CtkWidget *primary_label;
	CtkWidget *secondary_label;
	gchar *primary_text;
	const gchar *secondary_text;
	gchar *full_formatted_uri;
	gchar *uri_for_display;
	gchar *temp_uri_for_display;

	g_return_val_if_fail (uri != NULL, NULL);
	g_return_val_if_fail (error != NULL, NULL);
	g_return_val_if_fail (((error->domain == LAPIZ_DOCUMENT_ERROR &&
			        error->code == LAPIZ_DOCUMENT_ERROR_CANT_CREATE_BACKUP) ||
			       (error->domain == G_IO_ERROR &&
			        error->code == G_IO_ERROR_CANT_CREATE_BACKUP)), NULL);

	full_formatted_uri = lapiz_utils_uri_for_display (uri);

	/* Truncate the URI so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the URI doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	temp_uri_for_display = lapiz_utils_str_middle_truncate (full_formatted_uri,
								MAX_URI_IN_DIALOG_LENGTH);
	g_free (full_formatted_uri);

	uri_for_display = g_markup_printf_escaped ("<i>%s</i>", temp_uri_for_display);
	g_free (temp_uri_for_display);

	message_area = ctk_info_bar_new ();

	info_bar_add_icon_button_with_text (CTK_INFO_BAR (message_area),
					    _("S_ave Anyway"),
					    "document-save",
					    CTK_RESPONSE_YES);
	ctk_info_bar_add_button (CTK_INFO_BAR (message_area),
				 _("D_on't Save"),
				 CTK_RESPONSE_CANCEL);
	ctk_info_bar_set_message_type (CTK_INFO_BAR (message_area),
				       CTK_MESSAGE_WARNING);

	hbox_content = ctk_box_new (CTK_ORIENTATION_HORIZONTAL, 8);

	image = ctk_image_new_from_icon_name ("dialog-warning", CTK_ICON_SIZE_DIALOG);
	ctk_box_pack_start (CTK_BOX (hbox_content), image, FALSE, FALSE, 0);
	ctk_widget_set_halign (image, CTK_ALIGN_CENTER);
	ctk_widget_set_valign (image, CTK_ALIGN_START);

	vbox = ctk_box_new (CTK_ORIENTATION_VERTICAL, 6);
	ctk_box_pack_start (CTK_BOX (hbox_content), vbox, TRUE, TRUE, 0);

	// FIXME: review this messages

	if (lapiz_prefs_manager_get_create_backup_copy ())
		primary_text = g_strdup_printf (_("Could not create a backup file while saving %s"),
						uri_for_display);
	else
		primary_text = g_strdup_printf (_("Could not create a temporary backup file while saving %s"),
						uri_for_display);

	g_free (uri_for_display);

	primary_markup = g_strdup_printf ("<b>%s</b>", primary_text);
	g_free (primary_text);
	primary_label = ctk_label_new (primary_markup);
	g_free (primary_markup);
	ctk_box_pack_start (CTK_BOX (vbox), primary_label, TRUE, TRUE, 0);
	ctk_label_set_use_markup (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_line_wrap (CTK_LABEL (primary_label), TRUE);
	ctk_label_set_xalign (CTK_LABEL (primary_label), 0.0);
	ctk_widget_set_can_focus (primary_label, TRUE);
	ctk_label_set_selectable (CTK_LABEL (primary_label), TRUE);

	secondary_text = _("lapiz could not back up the old copy of the file before saving the new one. "
			   "You can ignore this warning and save the file anyway, but if an error "
			   "occurs while saving, you could lose the old copy of the file. Save anyway?");
	secondary_markup = g_strdup_printf ("<small>%s</small>",
					    secondary_text);
	secondary_label = ctk_label_new (secondary_markup);
	g_free (secondary_markup);
	ctk_box_pack_start (CTK_BOX (vbox), secondary_label, TRUE, TRUE, 0);
	ctk_widget_set_can_focus (secondary_label, TRUE);
	ctk_label_set_use_markup (CTK_LABEL (secondary_label), TRUE);
	ctk_label_set_line_wrap (CTK_LABEL (secondary_label), TRUE);
	ctk_label_set_selectable (CTK_LABEL (secondary_label), TRUE);
	ctk_label_set_xalign (CTK_LABEL (secondary_label), 0.0);

	ctk_widget_show_all (hbox_content);
	set_contents (message_area, hbox_content);

	return message_area;
}

CtkWidget *
lapiz_unrecoverable_saving_error_message_area_new (const gchar  *uri,
						   const GError *error)
{
	gchar *error_message = NULL;
	gchar *message_details = NULL;
	gchar *full_formatted_uri;
	gchar *uri_for_display;
	gchar *temp_uri_for_display;
	CtkWidget *message_area;

	g_return_val_if_fail (uri != NULL, NULL);
	g_return_val_if_fail (error != NULL, NULL);
	g_return_val_if_fail ((error->domain == LAPIZ_DOCUMENT_ERROR) ||
			      (error->domain == G_IO_ERROR), NULL);

	full_formatted_uri = lapiz_utils_uri_for_display (uri);

	/* Truncate the URI so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the URI doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	temp_uri_for_display = lapiz_utils_str_middle_truncate (full_formatted_uri,
								MAX_URI_IN_DIALOG_LENGTH);
	g_free (full_formatted_uri);

	uri_for_display = g_markup_printf_escaped ("<i>%s</i>", temp_uri_for_display);
	g_free (temp_uri_for_display);

	if (is_gio_error (error, G_IO_ERROR_NOT_SUPPORTED))
	{
		gchar *scheme_string;

		scheme_string = g_uri_parse_scheme (uri);

		if ((scheme_string != NULL) && g_utf8_validate (scheme_string, -1, NULL))
		{
			gchar *scheme_markup;

			scheme_markup = g_markup_printf_escaped ("<i>%s:</i>", scheme_string);

			/* Translators: %s is a URI scheme (like for example http:, ftp:, etc.) */
			message_details = g_strdup_printf (_("lapiz cannot handle %s locations in write mode. "
							     "Please check that you typed the "
							     "location correctly and try again."),
							   scheme_markup);
			g_free (scheme_markup);
		}
		else
		{
			message_details = g_strdup (_("lapiz cannot handle this location in write mode. "
						      "Please check that you typed the "
						      "location correctly and try again."));
		}

		g_free (scheme_string);
	}
	else if (is_gio_error (error, G_IO_ERROR_INVALID_FILENAME))
	{
		message_details = g_strdup (_("%s is not a valid location. "
					      "Please check that you typed the "
					      "location correctly and try again."));
	}
	else if (is_gio_error (error, G_IO_ERROR_PERMISSION_DENIED))
	{
		message_details = g_strdup (_("You do not have the permissions necessary to save the file. "
					      "Please check that you typed the "
					      "location correctly and try again."));
	}
	else if (is_gio_error (error, G_IO_ERROR_NO_SPACE))
	{
		message_details = g_strdup (_("There is not enough disk space to save the file. "
					      "Please free some disk space and try again."));
	}
	else if (is_gio_error (error, G_IO_ERROR_READ_ONLY))
	{
		message_details = g_strdup (_("You are trying to save the file on a read-only disk. "
					      "Please check that you typed the location "
					      "correctly and try again."));
	}
	else if (is_gio_error (error, G_IO_ERROR_EXISTS))
	{
		message_details = g_strdup (_("A file with the same name already exists. "
					      "Please use a different name."));
	}
	else if (is_gio_error (error, G_IO_ERROR_FILENAME_TOO_LONG))
	{
		message_details = g_strdup (_("The disk where you are trying to save the file has "
					      "a limitation on length of the file names. "
					      "Please use a shorter name."));
	}
	else if (error->domain == LAPIZ_DOCUMENT_ERROR &&
		 error->code == LAPIZ_DOCUMENT_ERROR_TOO_BIG)
	{
		message_details = g_strdup (_("The disk where you are trying to save the file has "
					      "a limitation on file sizes. Please try saving "
					      "a smaller file or saving it to a disk that does not "
					      "have this limitation."));
	}
	else
	{
		parse_error (error,
			     &error_message,
			     &message_details,
			     uri,
			     uri_for_display);
	}

	if (error_message == NULL)
	{
		error_message = g_strdup_printf (_("Could not save the file %s."),
						 uri_for_display);
	}

	message_area = create_io_loading_error_message_area (error_message,
							     message_details,
							     FALSE);

	g_free (uri_for_display);
	g_free (error_message);
	g_free (message_details);

	return message_area;
}

CtkWidget *
lapiz_externally_modified_message_area_new (const gchar *uri,
					    gboolean     document_modified)
{
	gchar *full_formatted_uri;
	gchar *uri_for_display;
	gchar *temp_uri_for_display;
	const gchar *primary_text;
	const gchar *secondary_text;
	CtkWidget *message_area;

	g_return_val_if_fail (uri != NULL, NULL);

	full_formatted_uri = lapiz_utils_uri_for_display (uri);

	/* Truncate the URI so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the URI doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	temp_uri_for_display = lapiz_utils_str_middle_truncate (full_formatted_uri,
								MAX_URI_IN_DIALOG_LENGTH);
	g_free (full_formatted_uri);

	uri_for_display = g_markup_printf_escaped ("<i>%s</i>", temp_uri_for_display);
	g_free (temp_uri_for_display);

	// FIXME: review this message, it's not clear since for the user the "modification"
	// could be interpreted as the changes he made in the document. beside "reading" is
	// not accurate (since last load/save)
	primary_text = g_strdup_printf (_("The file %s changed on disk."),
					uri_for_display);
	g_free (uri_for_display);

	if (document_modified)
		secondary_text = _("Do you want to drop your changes and reload the file?");
	else
		secondary_text = _("Do you want to reload the file?");

	message_area = ctk_info_bar_new ();

	info_bar_add_icon_button_with_text (CTK_INFO_BAR (message_area),
					    _("_Reload"),
					    "view-refresh",
					    CTK_RESPONSE_OK);

	ctk_button_set_image (CTK_BUTTON (ctk_info_bar_add_button (CTK_INFO_BAR (message_area),
								   _("_Cancel"),
								   CTK_RESPONSE_CANCEL)),
			      ctk_image_new_from_icon_name ("process-stop", CTK_ICON_SIZE_BUTTON));

	ctk_info_bar_set_message_type (CTK_INFO_BAR (message_area),
				       CTK_MESSAGE_WARNING);

	set_message_area_text_and_icon (message_area,
					"ctk-dialog-warning",
					primary_text,
					secondary_text);

	return message_area;
}