/*
 * gedit-commands-file.c
 * This file is part of gedit
 *
 * Copyright (C) 1998, 1999 Alex Roberts, Evan Lawrence
 * Copyright (C) 2000, 2001 Chema Celorio, Paolo Maggi
 * Copyright (C) 2002-2005 Paolo Maggi
 * Copyright (C) 2014 Sébastien Wilmet
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

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

#include "gedit-commands.h"
#include "gedit-commands-private.h"

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

#include "gedit-debug.h"
#include "gedit-document.h"
#include "gedit-document-private.h"
#include "gedit-tab.h"
#include "gedit-tab-private.h"
#include "gedit-window.h"
#include "gedit-window-private.h"
#include "gedit-notebook.h"
#include "gedit-statusbar.h"
#include "gedit-utils.h"
#include "gedit-file-chooser-dialog.h"
#include "gedit-close-confirmation-dialog.h"

#define GEDIT_OPEN_DIALOG_KEY "gedit-open-dialog-key"
#define GEDIT_IS_CLOSING_ALL "gedit-is-closing-all"
#define GEDIT_NOTEBOOK_TO_CLOSE "gedit-notebook-to-close"
#define GEDIT_IS_QUITTING "gedit-is-quitting"
#define GEDIT_IS_QUITTING_ALL "gedit-is-quitting-all"

static void tab_state_changed_while_saving (GeditTab    *tab,
					    GParamSpec  *pspec,
					    GeditWindow *window);

void
_gedit_cmd_file_new (GSimpleAction *action,
                     GVariant      *parameter,
                     gpointer       user_data)
{
	GeditWindow *window = GEDIT_WINDOW (user_data);

	gedit_debug (DEBUG_COMMANDS);

	gedit_window_create_tab (window, TRUE);
}

static GeditTab *
get_tab_from_file (GList *docs,
		   GFile *file)
{
	GList *l;

	for (l = docs; l != NULL; l = l->next)
	{
		GeditDocument *doc;
		GtkSourceFile *source_file;
		GFile *location;

		doc = l->data;
		source_file = gedit_document_get_file (doc);
		location = gtk_source_file_get_location (source_file);

		if (location != NULL && g_file_equal (location, file))
		{
			return gedit_tab_get_from_document (doc);
		}
	}

	return NULL;
}

static gboolean
is_duplicated_file (GSList *files,
		    GFile  *file)
{
	GSList *l;

	for (l = files; l != NULL; l = l->next)
	{
		if (g_file_equal (l->data, file))
		{
			return TRUE;
		}
	}

	return FALSE;
}

/* File loading */
static GSList *
load_file_list (GeditWindow             *window,
		const GSList            *files,
		const GtkSourceEncoding *encoding,
		gint                     line_pos,
		gint                     column_pos,
		gboolean                 create)
{
	GList *win_docs;
	GSList *files_to_load = NULL;
	GSList *loaded_files = NULL;
	GeditTab *tab;
	gboolean jump_to = TRUE; /* Whether to jump to the new tab */
	const GSList *l;
	gint num_loaded_files = 0;

	gedit_debug (DEBUG_COMMANDS);

	win_docs = gedit_window_get_documents (window);

	/* Remove the files corresponding to documents already opened in
	 * "window" and remove duplicates from the "files" list.
	 */
	for (l = files; l != NULL; l = l->next)
	{
		GFile *file = l->data;

		if (is_duplicated_file (files_to_load, file))
		{
			continue;
		}

		tab = get_tab_from_file (win_docs, file);

		if (tab == NULL)
		{
			files_to_load = g_slist_prepend (files_to_load, file);
		}
		else
		{
			if (l == files)
			{
				GeditDocument *doc;

				gedit_window_set_active_tab (window, tab);
				jump_to = FALSE;
				doc = gedit_tab_get_document (tab);

				if (line_pos > 0)
				{
					if (column_pos > 0)
					{
						gedit_document_goto_line_offset (doc,
						                                 line_pos - 1,
						                                 column_pos - 1);
					}
					else
					{
						gedit_document_goto_line (doc, line_pos - 1);
					}

					gedit_view_scroll_to_cursor (gedit_tab_get_view (tab));
				}
			}

			++num_loaded_files;
			loaded_files = g_slist_prepend (loaded_files,
			                                gedit_tab_get_document (tab));
		}
	}

	g_list_free (win_docs);

	if (files_to_load == NULL)
	{
		return g_slist_reverse (loaded_files);
	}

	files_to_load = g_slist_reverse (files_to_load);
	l = files_to_load;

	tab = gedit_window_get_active_tab (window);
	if (tab != NULL)
	{
		GeditDocument *doc;

		doc = gedit_tab_get_document (tab);

		if (gedit_document_is_untouched (doc) &&
		    gedit_tab_get_state (tab) == GEDIT_TAB_STATE_NORMAL)
		{
			_gedit_tab_load (tab,
					 l->data,
					 encoding,
					 line_pos,
					 column_pos,
					 create);

			/* make sure the view has focus */
			gtk_widget_grab_focus (GTK_WIDGET (gedit_tab_get_view (tab)));

			l = g_slist_next (l);
			jump_to = FALSE;

			++num_loaded_files;
			loaded_files = g_slist_prepend (loaded_files,
			                                gedit_tab_get_document (tab));
		}
	}

	while (l != NULL)
	{
		g_return_val_if_fail (l->data != NULL, NULL);

		tab = gedit_window_create_tab_from_location (window,
							     l->data,
							     encoding,
							     line_pos,
							     column_pos,
							     create,
							     jump_to);

		if (tab != NULL)
		{
			jump_to = FALSE;

			++num_loaded_files;
			loaded_files = g_slist_prepend (loaded_files,
			                                gedit_tab_get_document (tab));
		}

		l = g_slist_next (l);
	}

	loaded_files = g_slist_reverse (loaded_files);

	if (num_loaded_files == 1)
	{
		GeditDocument *doc;
		gchar *uri_for_display;

		g_return_val_if_fail (tab != NULL, loaded_files);

		doc = gedit_tab_get_document (tab);
		uri_for_display = gedit_document_get_uri_for_display (doc);

		gedit_statusbar_flash_message (GEDIT_STATUSBAR (window->priv->statusbar),
					       window->priv->generic_message_cid,
					       _("Loading file '%s'\342\200\246"),
					       uri_for_display);

		g_free (uri_for_display);
	}
	else
	{
		gedit_statusbar_flash_message (GEDIT_STATUSBAR (window->priv->statusbar),
					       window->priv->generic_message_cid,
					       ngettext ("Loading %d file\342\200\246",
							 "Loading %d files\342\200\246",
							 num_loaded_files),
					       num_loaded_files);
	}

	g_slist_free (files_to_load);

	return loaded_files;
}

/**
 * gedit_commands_load_location:
 * @window: a #GeditWindow
 * @location: a #GFile to load
 * @encoding: (allow-none): the #GtkSourceEncoding of @location
 * @line_pos: the line position to place the cursor
 * @column_pos: the line column to place the cursor
 *
 * Loads @location. Ignores non-existing locations.
 */
void
gedit_commands_load_location (GeditWindow             *window,
			      GFile                   *location,
			      const GtkSourceEncoding *encoding,
			      gint                     line_pos,
			      gint                     column_pos)
{
	GSList *locations = NULL;
	gchar *uri;
	GSList *ret;

	g_return_if_fail (GEDIT_IS_WINDOW (window));
	g_return_if_fail (G_IS_FILE (location));
	g_return_if_fail (gedit_utils_is_valid_location (location));

	uri = g_file_get_uri (location);
	gedit_debug_message (DEBUG_COMMANDS, "Loading URI '%s'", uri);
	g_free (uri);

	locations = g_slist_prepend (locations, location);

	ret = load_file_list (window, locations, encoding, line_pos, column_pos, FALSE);
	g_slist_free (ret);

	g_slist_free (locations);
}

/**
 * gedit_commands_load_locations:
 * @window: a #GeditWindow
 * @locations: (element-type Gio.File): the locations to load
 * @encoding: (allow-none): the #GtkSourceEncoding
 * @line_pos: the line position to place the cursor
 * @column_pos: the line column to place the cursor
 *
 * Loads @locations. Ignore non-existing locations.
 *
 * Returns: (element-type Gedit.Document) (transfer container): the locations
 * that were loaded.
 */
GSList *
gedit_commands_load_locations (GeditWindow             *window,
			       const GSList            *locations,
			       const GtkSourceEncoding *encoding,
			       gint                     line_pos,
			       gint                     column_pos)
{
	g_return_val_if_fail (GEDIT_IS_WINDOW (window), NULL);
	g_return_val_if_fail (locations != NULL && locations->data != NULL, NULL);

	gedit_debug (DEBUG_COMMANDS);

	return load_file_list (window, locations, encoding, line_pos, column_pos, FALSE);
}

/*
 * From the command line we can specify a line position for the
 * first doc. Beside specifying a non-existing file creates a
 * titled document.
 */
GSList *
_gedit_cmd_load_files_from_prompt (GeditWindow             *window,
				   GSList                  *files,
				   const GtkSourceEncoding *encoding,
				   gint                     line_pos,
				   gint                     column_pos)
{
	gedit_debug (DEBUG_COMMANDS);

	return load_file_list (window, files, encoding, line_pos, column_pos, TRUE);
}

static void
open_dialog_destroyed (GeditWindow            *window,
		       GeditFileChooserDialog *dialog)
{
	gedit_debug (DEBUG_COMMANDS);

	g_object_set_data (G_OBJECT (window),
			   GEDIT_OPEN_DIALOG_KEY,
			   NULL);
}

static void
open_dialog_response_cb (GeditFileChooserDialog *dialog,
                         gint                    response_id,
                         GeditWindow            *window)
{
	GSList *files;
	const GtkSourceEncoding *encoding;
	GSList *loaded;

	gedit_debug (DEBUG_COMMANDS);

	if (response_id != GTK_RESPONSE_OK)
	{
		gedit_file_chooser_dialog_destroy (dialog);
		return;
	}

	files = gedit_file_chooser_dialog_get_files (dialog);
	g_return_if_fail (files != NULL);

	encoding = gedit_file_chooser_dialog_get_encoding (dialog);

	gedit_file_chooser_dialog_destroy (dialog);

	if (window == NULL)
	{
		window = gedit_app_create_window (GEDIT_APP (g_application_get_default ()),
		                                  NULL);

		gtk_widget_show (GTK_WIDGET (window));
		gtk_window_present (GTK_WINDOW (window));
	}

	/* Remember the folder we navigated to */
	_gedit_window_set_default_location (window, files->data);

	loaded = gedit_commands_load_locations (window,
	                                        files,
	                                        encoding,
	                                        0,
	                                        0);

	g_slist_free (loaded);
	g_slist_free_full (files, g_object_unref);
}

void
_gedit_cmd_file_open (GSimpleAction *action,
                      GVariant      *parameter,
                      gpointer       user_data)
{
	GeditWindow *window = NULL;
	GeditFileChooserDialog *open_dialog;

	if (GEDIT_IS_WINDOW (user_data))
	{
		window = user_data;
	}

	gedit_debug (DEBUG_COMMANDS);

	if (window != NULL)
	{
		gpointer data;

		data = g_object_get_data (G_OBJECT (window), GEDIT_OPEN_DIALOG_KEY);

		if (data != NULL)
		{
			g_return_if_fail (GEDIT_IS_FILE_CHOOSER_DIALOG (data));

			gtk_window_present (GTK_WINDOW (data));

			return;
		}

		/* FIXME: this should be in GeditWindow. */
		gtk_widget_hide (GTK_WIDGET (window->priv->open_document_popover));
		gtk_widget_hide (GTK_WIDGET (window->priv->fullscreen_open_document_popover));
	}

	/* Translators: "Open" is the title of the file chooser window. */
	open_dialog = gedit_file_chooser_dialog_create (_("Open"),
							window != NULL ? GTK_WINDOW (window) : NULL,
							GEDIT_FILE_CHOOSER_OPEN |
							GEDIT_FILE_CHOOSER_ENABLE_ENCODING |
							GEDIT_FILE_CHOOSER_ENABLE_DEFAULT_FILTERS,
							NULL,
							_("_Cancel"), GTK_RESPONSE_CANCEL,
							_("_Open"), GTK_RESPONSE_OK);

	if (window != NULL)
	{
		GeditDocument *doc;
		GFile *default_path = NULL;

		/* The file chooser dialog for opening files is not modal, so
		 * ensure that at most one file chooser is opened.
		 */
		g_object_set_data (G_OBJECT (window),
				   GEDIT_OPEN_DIALOG_KEY,
				   open_dialog);

		g_object_weak_ref (G_OBJECT (open_dialog),
				   (GWeakNotify) open_dialog_destroyed,
				   window);

		/* Set the current folder */
		doc = gedit_window_get_active_document (window);

		if (doc != NULL)
		{
			GtkSourceFile *file = gedit_document_get_file (doc);
			GFile *location = gtk_source_file_get_location (file);

			if (location != NULL)
			{
				default_path = g_file_get_parent (location);
			}
		}

		if (default_path == NULL)
		{
			default_path = _gedit_window_get_default_location (window);
		}

		if (default_path != NULL)
		{
			gedit_file_chooser_dialog_set_current_folder (open_dialog, default_path);
			g_object_unref (default_path);
		}
	}

	g_signal_connect (open_dialog,
			  "response",
			  G_CALLBACK (open_dialog_response_cb),
			  window);

	gedit_file_chooser_dialog_show (open_dialog);
}

void
_gedit_cmd_file_reopen_closed_tab (GSimpleAction *action,
				   GVariant      *parameter,
				   gpointer       user_data)
{
	GeditWindow *window = GEDIT_WINDOW (user_data);
	GFile *file;

	file = _gedit_window_pop_last_closed_doc (window);
	if (file != NULL)
	{
		gedit_commands_load_location (window, file, NULL, 0, 0);
	}
}

/* File saving */

/* FIXME: modify this dialog to be similar to the one provided by gtk+ for
 * already existing files - Paolo (Oct. 11, 2005) */
static gboolean
replace_read_only_file (GtkWindow *parent,
			GFile     *file)
{
	GtkWidget *dialog;
	gint ret;
	gchar *parse_name;
	gchar *name_for_display;

	gedit_debug (DEBUG_COMMANDS);

	parse_name = g_file_get_parse_name (file);

	/* Truncate the name so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the name doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	name_for_display = gedit_utils_str_middle_truncate (parse_name, 50);
	g_free (parse_name);

	dialog = gtk_message_dialog_new (parent,
					 GTK_DIALOG_DESTROY_WITH_PARENT,
					 GTK_MESSAGE_QUESTION,
					 GTK_BUTTONS_NONE,
					 _("The file \"%s\" is read-only."),
				         name_for_display);
	g_free (name_for_display);

	gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
						  _("Do you want to try to replace it "
						    "with the one you are saving?"));

	gtk_dialog_add_buttons (GTK_DIALOG (dialog),
			        _("_Cancel"), GTK_RESPONSE_CANCEL,
				_("_Replace"), GTK_RESPONSE_YES,
				NULL);

	gtk_dialog_set_default_response	(GTK_DIALOG (dialog),
					 GTK_RESPONSE_CANCEL);

	gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);

	ret = gtk_dialog_run (GTK_DIALOG (dialog));

	gtk_widget_destroy (dialog);

	return ret == GTK_RESPONSE_YES;
}

static gboolean
change_compression (GtkWindow *parent,
                    GFile     *file,
                    gboolean   compressed)
{
	GtkWidget *dialog;
	gint ret;
	gchar *parse_name;
	gchar *name_for_display;
	const gchar *primary_message;
	const gchar *button_label;

	gedit_debug (DEBUG_COMMANDS);

	parse_name = g_file_get_parse_name (file);

	/* Truncate the name so it doesn't get insanely wide. Note that even
	 * though the dialog uses wrapped text, if the name doesn't contain
	 * white space then the text-wrapping code is too stupid to wrap it.
	 */
	name_for_display = gedit_utils_str_middle_truncate (parse_name, 50);
	g_free (parse_name);

	if (compressed)
	{
		primary_message = _("Save the file using compression?");
	}
	else
	{
		primary_message = _("Save the file as plain text?");
	}

	dialog = gtk_message_dialog_new (parent,
					 GTK_DIALOG_DESTROY_WITH_PARENT,
					 GTK_MESSAGE_QUESTION,
					 GTK_BUTTONS_NONE,
					 "%s",
					 primary_message);

	if (compressed)
	{
		gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
							  _("The file \"%s\" was previously saved as plain "
							    "text and will now be saved using compression."),
							  name_for_display);

		button_label = _("_Save Using Compression");
	}
	else
	{
		gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
							  _("The file \"%s\" was previously saved "
							    "using compression and will now be saved as plain text."),
							  name_for_display);
		button_label = _("_Save As Plain Text");
	}

	g_free (name_for_display);

	gtk_dialog_add_buttons (GTK_DIALOG (dialog),
			        _("_Cancel"), GTK_RESPONSE_CANCEL,
				button_label, GTK_RESPONSE_YES,
				NULL);

	gtk_dialog_set_default_response	(GTK_DIALOG (dialog),
					 GTK_RESPONSE_CANCEL);

	gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);

	ret = gtk_dialog_run (GTK_DIALOG (dialog));

	gtk_widget_destroy (dialog);

	return ret == GTK_RESPONSE_YES;
}

static GtkSourceCompressionType
get_compression_type_from_file (GFile *file)
{
	gchar *name;
	gchar *content_type;
	GtkSourceCompressionType type;

	name = g_file_get_basename (file);
	content_type = g_content_type_guess (name, NULL, 0, NULL);

	type = gedit_utils_get_compression_type_from_content_type (content_type);

	g_free (name);
	g_free (content_type);

	return type;
}

static void
tab_save_as_ready_cb (GeditTab     *tab,
		      GAsyncResult *result,
		      GTask        *task)
{
	gboolean success = _gedit_tab_save_finish (tab, result);
	g_task_return_boolean (task, success);
	g_object_unref (task);
}

static void
save_dialog_response_cb (GeditFileChooserDialog *dialog,
			 gint                    response_id,
			 GTask                  *task)
{
	GeditTab *tab;
	GeditWindow *window;
	GeditDocument *doc;
	GtkSourceFile *file;
	GFile *location;
	gchar *parse_name;
	GtkSourceNewlineType newline_type;
	GtkSourceCompressionType compression_type;
	GtkSourceCompressionType current_compression_type;
	const GtkSourceEncoding *encoding;

	gedit_debug (DEBUG_COMMANDS);

	tab = g_task_get_source_object (task);
	window = g_task_get_task_data (task);

	if (response_id != GTK_RESPONSE_OK)
	{
		gedit_file_chooser_dialog_destroy (dialog);
		g_task_return_boolean (task, FALSE);
		g_object_unref (task);
		return;
	}

	doc = gedit_tab_get_document (tab);
	file = gedit_document_get_file (doc);

	location = gedit_file_chooser_dialog_get_file (dialog);
	g_return_if_fail (location != NULL);

	compression_type = get_compression_type_from_file (location);
	current_compression_type = gtk_source_file_get_compression_type (file);

	if ((compression_type == GTK_SOURCE_COMPRESSION_TYPE_NONE) !=
	    (current_compression_type == GTK_SOURCE_COMPRESSION_TYPE_NONE))
	{
		GtkWindow *dialog_window = gedit_file_chooser_dialog_get_window (dialog);

		if (!change_compression (dialog_window,
					 location,
					 compression_type != GTK_SOURCE_COMPRESSION_TYPE_NONE))
		{
			gedit_file_chooser_dialog_destroy (dialog);
			g_object_unref (location);

			g_task_return_boolean (task, FALSE);
			g_object_unref (task);
			return;
		}
	}

	encoding = gedit_file_chooser_dialog_get_encoding (dialog);
	newline_type = gedit_file_chooser_dialog_get_newline_type (dialog);

	gedit_file_chooser_dialog_destroy (dialog);

	parse_name = g_file_get_parse_name (location);

	gedit_statusbar_flash_message (GEDIT_STATUSBAR (window->priv->statusbar),
				       window->priv->generic_message_cid,
				       _("Saving file '%s'\342\200\246"),
				       parse_name);

	g_free (parse_name);

	/* Let's remember the dir we navigated to, even if the saving fails... */
	_gedit_window_set_default_location (window, location);

	_gedit_tab_save_as_async (tab,
				  location,
				  encoding,
				  newline_type,
				  compression_type,
				  g_task_get_cancellable (task),
				  (GAsyncReadyCallback) tab_save_as_ready_cb,
				  task);

	g_object_unref (location);
}

static GtkFileChooserConfirmation
confirm_overwrite_callback (GeditFileChooserDialog *dialog,
			    gpointer                data)
{
	GtkFileChooserConfirmation res;
	GFile *file;
	GFileInfo *info;

	gedit_debug (DEBUG_COMMANDS);

	/* fall back to the default confirmation dialog */
	res = GTK_FILE_CHOOSER_CONFIRMATION_CONFIRM;

	file = gedit_file_chooser_dialog_get_file (dialog);

	info = g_file_query_info (file,
				  G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE,
				  G_FILE_QUERY_INFO_NONE,
				  NULL,
				  NULL);

	if (info != NULL)
	{
		if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE) &&
		    !g_file_info_get_attribute_boolean (info, G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE))
		{
			GtkWindow *win;

			win = gedit_file_chooser_dialog_get_window (dialog);

			if (replace_read_only_file (win, file))
			{
				res = GTK_FILE_CHOOSER_CONFIRMATION_ACCEPT_FILENAME;
			}
			else
			{
				res = GTK_FILE_CHOOSER_CONFIRMATION_SELECT_AGAIN;
			}
		}

		g_object_unref (info);
	}

	g_object_unref (file);

	return res;
}

/* Call save_as_tab_finish() in @callback. */
static void
save_as_tab_async (GeditTab            *tab,
		   GeditWindow         *window,
		   GCancellable        *cancellable,
		   GAsyncReadyCallback  callback,
		   gpointer             user_data)
{
	GTask *task;
	GeditFileChooserDialog *save_dialog;
	GtkWindowGroup *window_group;
	GtkWindow *dialog_window;
	GeditDocument *doc;
	GtkSourceFile *file;
	GFile *location;
	const GtkSourceEncoding *encoding;
	GtkSourceNewlineType newline_type;

	g_return_if_fail (GEDIT_IS_TAB (tab));
	g_return_if_fail (GEDIT_IS_WINDOW (window));

	gedit_debug (DEBUG_COMMANDS);

	task = g_task_new (tab, cancellable, callback, user_data);
	g_task_set_task_data (task, g_object_ref (window), g_object_unref);

	save_dialog = gedit_file_chooser_dialog_create (_("Save As"),
							GTK_WINDOW (window),
							GEDIT_FILE_CHOOSER_SAVE |
							GEDIT_FILE_CHOOSER_ENABLE_ENCODING |
							GEDIT_FILE_CHOOSER_ENABLE_LINE_ENDING |
							GEDIT_FILE_CHOOSER_ENABLE_DEFAULT_FILTERS,
							NULL,
							_("_Cancel"), GTK_RESPONSE_CANCEL,
							_("_Save"), GTK_RESPONSE_OK);

	gedit_file_chooser_dialog_set_do_overwrite_confirmation (save_dialog, TRUE);

	g_signal_connect (save_dialog,
			  "confirm-overwrite",
			  G_CALLBACK (confirm_overwrite_callback),
			  NULL);

	window_group = gedit_window_get_group (window);

	dialog_window = gedit_file_chooser_dialog_get_window (save_dialog);

	if (dialog_window != NULL)
	{
		gtk_window_group_add_window (window_group, dialog_window);
	}

	/* Save As dialog is modal to its main window */
	gedit_file_chooser_dialog_set_modal (save_dialog, TRUE);

	/* Set the suggested file name */
	doc = gedit_tab_get_document (tab);
	file = gedit_document_get_file (doc);
	location = gtk_source_file_get_location (file);

	if (location != NULL)
	{
		gedit_file_chooser_dialog_set_file (save_dialog, location);
	}
	else
	{
		GFile *default_path;
		gchar *docname;

		default_path = _gedit_window_get_default_location (window);
		docname = gedit_document_get_short_name_for_display (doc);

		if (default_path != NULL)
		{
			gedit_file_chooser_dialog_set_current_folder (save_dialog,
								      default_path);

			g_object_unref (default_path);
		}

		gedit_file_chooser_dialog_set_current_name (save_dialog,
							    docname);

		g_free (docname);
	}

	/* Set suggested encoding and newline type. */
	encoding = gtk_source_file_get_encoding (file);

	if (encoding == NULL)
	{
		encoding = gtk_source_encoding_get_utf8 ();
	}

	newline_type = gtk_source_file_get_newline_type (file);

	gedit_file_chooser_dialog_set_encoding (GEDIT_FILE_CHOOSER_DIALOG (save_dialog),
						encoding);

	gedit_file_chooser_dialog_set_newline_type (GEDIT_FILE_CHOOSER_DIALOG (save_dialog),
	                                            newline_type);

	g_signal_connect (save_dialog,
			  "response",
			  G_CALLBACK (save_dialog_response_cb),
			  task);

	gedit_file_chooser_dialog_show (save_dialog);
}

static gboolean
save_as_tab_finish (GeditTab     *tab,
		    GAsyncResult *result)
{
	g_return_val_if_fail (g_task_is_valid (result, tab), FALSE);

	return g_task_propagate_boolean (G_TASK (result), NULL);
}

static void
save_as_tab_ready_cb (GeditTab     *tab,
		      GAsyncResult *result,
		      GTask        *task)
{
	gboolean success = save_as_tab_finish (tab, result);

	g_task_return_boolean (task, success);
	g_object_unref (task);
}

static void
tab_save_ready_cb (GeditTab     *tab,
		   GAsyncResult *result,
		   GTask        *task)
{
	gboolean success = _gedit_tab_save_finish (tab, result);

	g_task_return_boolean (task, success);
	g_object_unref (task);
}

/**
 * gedit_commands_save_document_async:
 * @document: the #GeditDocument to save.
 * @window: a #GeditWindow.
 * @cancellable: (nullable): optional #GCancellable object, %NULL to ignore.
 * @callback: (scope async): a #GAsyncReadyCallback to call when the operation
 *   is finished.
 * @user_data: (closure): the data to pass to the @callback function.
 *
 * Asynchronously save the @document. @document must belong to @window. The
 * source object of the async task is @document (which will be the first
 * parameter of the #GAsyncReadyCallback).
 *
 * When the operation is finished, @callback will be called. You can then call
 * gedit_commands_save_document_finish() to get the result of the operation.
 *
 * Since: 3.14
 */
void
gedit_commands_save_document_async (GeditDocument       *document,
				    GeditWindow         *window,
				    GCancellable        *cancellable,
				    GAsyncReadyCallback  callback,
				    gpointer             user_data)
{
	GTask *task;
	GeditTab *tab;
	GtkSourceFile *file;
	gchar *uri_for_display;

	gedit_debug (DEBUG_COMMANDS);

	g_return_if_fail (GEDIT_IS_DOCUMENT (document));
	g_return_if_fail (GEDIT_IS_WINDOW (window));
	g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));

	task = g_task_new (document, cancellable, callback, user_data);

	tab = gedit_tab_get_from_document (document);
	file = gedit_document_get_file (document);

	if (gedit_document_is_untitled (document) ||
	    gtk_source_file_is_readonly (file))
	{
		gedit_debug_message (DEBUG_COMMANDS, "Untitled or Readonly");

		save_as_tab_async (tab,
				   window,
				   cancellable,
				   (GAsyncReadyCallback) save_as_tab_ready_cb,
				   task);
		return;
	}

	uri_for_display = gedit_document_get_uri_for_display (document);
	gedit_statusbar_flash_message (GEDIT_STATUSBAR (window->priv->statusbar),
				       window->priv->generic_message_cid,
				       _("Saving file '%s'\342\200\246"),
				       uri_for_display);

	g_free (uri_for_display);

	_gedit_tab_save_async (tab,
			       cancellable,
			       (GAsyncReadyCallback) tab_save_ready_cb,
			       task);
}

/**
 * gedit_commands_save_document_finish:
 * @document: a #GeditDocument.
 * @result: a #GAsyncResult.
 *
 * Finishes an asynchronous document saving operation started with
 * gedit_commands_save_document_async().
 *
 * Note that there is no error parameter because the errors are already handled
 * by gedit.
 *
 * Returns: %TRUE if the document has been correctly saved, %FALSE otherwise.
 * Since: 3.14
 */
gboolean
gedit_commands_save_document_finish (GeditDocument *document,
				     GAsyncResult  *result)
{
	g_return_val_if_fail (g_task_is_valid (result, document), FALSE);

	return g_task_propagate_boolean (G_TASK (result), NULL);
}

static void
save_tab_ready_cb (GeditDocument *doc,
		   GAsyncResult  *result,
		   gpointer       user_data)
{
	gedit_commands_save_document_finish (doc, result);
}

/* Save tab asynchronously, but without results. */
static void
save_tab (GeditTab    *tab,
	  GeditWindow *window)
{
	GeditDocument *doc = gedit_tab_get_document (tab);

	gedit_commands_save_document_async (doc,
					    window,
					    NULL,
					    (GAsyncReadyCallback) save_tab_ready_cb,
					    NULL);
}

void
_gedit_cmd_file_save (GSimpleAction *action,
                      GVariant      *parameter,
                      gpointer       user_data)
{
	GeditWindow *window = GEDIT_WINDOW (user_data);
	GeditTab *tab;

	gedit_debug (DEBUG_COMMANDS);

	tab = gedit_window_get_active_tab (window);
	if (tab != NULL)
	{
		save_tab (tab, window);
	}
}

static void
_gedit_cmd_file_save_as_cb (GeditTab     *tab,
			    GAsyncResult *result,
			    gpointer      user_data)
{
	save_as_tab_finish (tab, result);
}

void
_gedit_cmd_file_save_as (GSimpleAction *action,
                         GVariant      *parameter,
                         gpointer       user_data)
{
	GeditWindow *window = GEDIT_WINDOW (user_data);
	GeditTab *tab;

	gedit_debug (DEBUG_COMMANDS);

	tab = gedit_window_get_active_tab (window);
	if (tab != NULL)
	{
		save_as_tab_async (tab,
				   window,
				   NULL,
				   (GAsyncReadyCallback) _gedit_cmd_file_save_as_cb,
				   NULL);
	}
}

static void
quit_if_needed (GeditWindow *window)
{
	gboolean is_quitting;
	gboolean is_quitting_all;

	is_quitting = GPOINTER_TO_BOOLEAN (g_object_get_data (G_OBJECT (window),
							      GEDIT_IS_QUITTING));

	is_quitting_all = GPOINTER_TO_BOOLEAN (g_object_get_data (G_OBJECT (window),
							          GEDIT_IS_QUITTING_ALL));

	if (is_quitting)
	{
		gtk_widget_destroy (GTK_WIDGET (window));
	}

	if (is_quitting_all)
	{
		GtkApplication *app;

		app = GTK_APPLICATION (g_application_get_default ());

		if (gtk_application_get_windows (app) == NULL)
		{
			g_application_quit (G_APPLICATION (app));
		}
	}
}

static gboolean
really_close_tab (GeditTab *tab)
{
	GtkWidget *toplevel;
	GeditWindow *window;

	gedit_debug (DEBUG_COMMANDS);

	g_return_val_if_fail (gedit_tab_get_state (tab) == GEDIT_TAB_STATE_CLOSING,
			      FALSE);

	toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tab));
	g_return_val_if_fail (GEDIT_IS_WINDOW (toplevel), FALSE);

	window = GEDIT_WINDOW (toplevel);

	gedit_window_close_tab (window, tab);

	if (gedit_window_get_active_tab (window) == NULL)
	{
		quit_if_needed (window);
	}

	return FALSE;
}

static void
close_tab (GeditTab *tab)
{
	GeditDocument *doc;

	doc = gedit_tab_get_document (tab);
	g_return_if_fail (doc != NULL);

	/* If the user has modified again the document, do not close the tab. */
	if (_gedit_document_needs_saving (doc))
	{
		return;
	}

	/* Close the document only if it has been succesfully saved.
	 * Tab state is set to CLOSING (it is a state without exiting
	 * transitions) and the tab is closed in an idle handler.
	 */
	_gedit_tab_mark_for_closing (tab);

	g_idle_add_full (G_PRIORITY_HIGH_IDLE,
			 (GSourceFunc) really_close_tab,
			 tab,
			 NULL);
}

typedef struct _SaveAsData SaveAsData;

struct _SaveAsData
{
	/* Reffed */
	GeditWindow *window;

	/* List of reffed GeditTab's */
	GSList *tabs_to_save_as;

	guint close_tabs : 1;
};

static void save_as_documents_list (SaveAsData *data);

static void
save_as_documents_list_cb (GeditTab     *tab,
			   GAsyncResult *result,
			   SaveAsData   *data)
{
	gboolean saved = save_as_tab_finish (tab, result);

	if (saved && data->close_tabs)
	{
		close_tab (tab);
	}

	g_return_if_fail (tab == GEDIT_TAB (data->tabs_to_save_as->data));
	g_object_unref (data->tabs_to_save_as->data);
	data->tabs_to_save_as = g_slist_delete_link (data->tabs_to_save_as,
						     data->tabs_to_save_as);

	if (data->tabs_to_save_as != NULL)
	{
		save_as_documents_list (data);
	}
	else
	{
		g_object_unref (data->window);
		g_slice_free (SaveAsData, data);
	}
}

static void
save_as_documents_list (SaveAsData *data)
{
	GeditTab *next_tab = GEDIT_TAB (data->tabs_to_save_as->data);

	gedit_window_set_active_tab (data->window, next_tab);

	save_as_tab_async (next_tab,
			   data->window,
			   NULL,
			   (GAsyncReadyCallback) save_as_documents_list_cb,
			   data);
}

/*
 * The docs in the list must belong to the same GeditWindow.
 */
static void
save_documents_list (GeditWindow *window,
		     GList       *docs)
{
	SaveAsData *data = NULL;
	GList *l;

	gedit_debug (DEBUG_COMMANDS);

	g_return_if_fail ((gedit_window_get_state (window) & GEDIT_WINDOW_STATE_PRINTING) == 0);

	for (l = docs; l != NULL; l = l->next)
	{
		GeditDocument *doc;
		GeditTab *tab;
		GeditTabState state;

		g_return_if_fail (GEDIT_IS_DOCUMENT (l->data));
		doc = l->data;

		tab = gedit_tab_get_from_document (doc);
		state = gedit_tab_get_state (tab);

		g_return_if_fail (state != GEDIT_TAB_STATE_PRINTING);
		g_return_if_fail (state != GEDIT_TAB_STATE_CLOSING);

		if (state == GEDIT_TAB_STATE_NORMAL ||
		    state == GEDIT_TAB_STATE_SHOWING_PRINT_PREVIEW)
		{
			if (_gedit_document_needs_saving (doc))
			{
				GtkSourceFile *file = gedit_document_get_file (doc);

				/* FIXME: manage the case of local readonly files owned by the
				   user is running gedit - Paolo (Dec. 8, 2005) */
				if (gedit_document_is_untitled (doc) ||
				    gtk_source_file_is_readonly (file))
				{
					if (data == NULL)
					{
						data = g_slice_new (SaveAsData);
						data->window = g_object_ref (window);
						data->tabs_to_save_as = NULL;
						data->close_tabs = FALSE;
					}

					data->tabs_to_save_as = g_slist_prepend (data->tabs_to_save_as,
										 g_object_ref (tab));
				}
				else
				{
					save_tab (tab, window);
				}
			}
		}
		else
		{
			/* If the state is:
			   - GEDIT_TAB_STATE_LOADING: we do not save since we are sure the file is unmodified
			   - GEDIT_TAB_STATE_REVERTING: we do not save since the user wants
			     to return back to the version of the file she previously saved
			   - GEDIT_TAB_STATE_SAVING: well, we are already saving (no need to save again)
			   - GEDIT_TAB_STATE_PRINTING: there is not a
			     real reason for not saving in this case, we do not save to avoid to run
			     two operations using the message area at the same time (may be we can remove
			     this limitation in the future). Note that SaveAll, ClosAll
			     and Quit are unsensitive if the window state is PRINTING.
			   - GEDIT_TAB_STATE_GENERIC_ERROR: we do not save since the document contains
			     errors (I don't think this is a very frequent case, we should probably remove
			     this state)
			   - GEDIT_TAB_STATE_LOADING_ERROR: there is nothing to save
			   - GEDIT_TAB_STATE_REVERTING_ERROR: there is nothing to save and saving the current
			     document will overwrite the copy of the file the user wants to go back to
			   - GEDIT_TAB_STATE_SAVING_ERROR: we do not save since we just failed to save, so there is
			     no reason to automatically retry... we wait for user intervention
			   - GEDIT_TAB_STATE_CLOSING: this state is invalid in this case
			*/

			gchar *uri_for_display;

			uri_for_display = gedit_document_get_uri_for_display (doc);
			gedit_debug_message (DEBUG_COMMANDS,
					     "File '%s' not saved. State: %d",
					     uri_for_display,
					     state);
			g_free (uri_for_display);
		}
	}

	if (data != NULL)
	{
		data->tabs_to_save_as = g_slist_reverse (data->tabs_to_save_as);
		save_as_documents_list (data);
	}
}

/**
 * gedit_commands_save_all_documents:
 * @window: a #GeditWindow.
 *
 * Asynchronously save all documents belonging to @window. The result of the
 * operation is not available, so it's difficult to know whether all the
 * documents are correctly saved.
 */
void
gedit_commands_save_all_documents (GeditWindow *window)
{
	GList *docs;

	g_return_if_fail (GEDIT_IS_WINDOW (window));

	gedit_debug (DEBUG_COMMANDS);

	docs = gedit_window_get_documents (window);

	save_documents_list (window, docs);

	g_list_free (docs);
}

void
_gedit_cmd_file_save_all (GSimpleAction *action,
                          GVariant      *parameter,
                          gpointer       user_data)
{
	gedit_commands_save_all_documents (GEDIT_WINDOW (user_data));
}

/**
 * gedit_commands_save_document:
 * @window: a #GeditWindow.
 * @document: the #GeditDocument to save.
 *
 * Asynchronously save @document. @document must belong to @window. If you need
 * the result of the operation, use gedit_commands_save_document_async().
 */
void
gedit_commands_save_document (GeditWindow   *window,
                              GeditDocument *document)
{
	GeditTab *tab;

	g_return_if_fail (GEDIT_IS_WINDOW (window));
	g_return_if_fail (GEDIT_IS_DOCUMENT (document));

	gedit_debug (DEBUG_COMMANDS);

	tab = gedit_tab_get_from_document (document);
	save_tab (tab, window);
}

/* File revert */
static void
do_revert (GeditWindow *window,
	   GeditTab    *tab)
{
	GeditDocument *doc;
	gchar *docname;

	gedit_debug (DEBUG_COMMANDS);

	doc = gedit_tab_get_document (tab);
	docname = gedit_document_get_short_name_for_display (doc);

	gedit_statusbar_flash_message (GEDIT_STATUSBAR (window->priv->statusbar),
				       window->priv->generic_message_cid,
				       _("Reverting the document '%s'\342\200\246"),
				       docname);

	g_free (docname);

	_gedit_tab_revert (tab);
}

static void
revert_dialog_response_cb (GtkDialog   *dialog,
			   gint         response_id,
			   GeditWindow *window)
{
	GeditTab *tab;

	gedit_debug (DEBUG_COMMANDS);

	/* FIXME: we are relying on the fact that the dialog is
	   modal so the active tab can't be changed...
	   not very nice - Paolo (Oct 11, 2005) */
	tab = gedit_window_get_active_tab (window);
	if (tab == NULL)
	{
		return;
	}

	gtk_widget_destroy (GTK_WIDGET (dialog));

	if (response_id == GTK_RESPONSE_OK)
	{
		do_revert (window, tab);
	}
}

static GtkWidget *
revert_dialog (GeditWindow   *window,
	       GeditDocument *doc)
{
	GtkWidget *dialog;
	gchar *docname;
	gchar *primary_msg;
	gchar *secondary_msg;
	glong seconds;

	gedit_debug (DEBUG_COMMANDS);

	docname = gedit_document_get_short_name_for_display (doc);
	primary_msg = g_strdup_printf (_("Revert unsaved changes to document '%s'?"),
	                               docname);
	g_free (docname);

	seconds = MAX (1, _gedit_document_get_seconds_since_last_save_or_load (doc));

	if (seconds < 55)
	{
		secondary_msg = g_strdup_printf (
					ngettext ("Changes made to the document in the last %ld second "
					    	  "will be permanently lost.",
						  "Changes made to the document in the last %ld seconds "
					    	  "will be permanently lost.",
						  seconds),
					seconds);
	}
	else if (seconds < 75) /* 55 <= seconds < 75 */
	{
		secondary_msg = g_strdup (_("Changes made to the document in the last minute "
					    "will be permanently lost."));
	}
	else if (seconds < 110) /* 75 <= seconds < 110 */
	{
		secondary_msg = g_strdup_printf (
					ngettext ("Changes made to the document in the last minute and "
						  "%ld second will be permanently lost.",
						  "Changes made to the document in the last minute and "
						  "%ld seconds will be permanently lost.",
						  seconds - 60 ),
					seconds - 60);
	}
	else if (seconds < 3600)
	{
		secondary_msg = g_strdup_printf (
					ngettext ("Changes made to the document in the last %ld minute "
					    	  "will be permanently lost.",
						  "Changes made to the document in the last %ld minutes "
					    	  "will be permanently lost.",
						  seconds / 60),
					seconds / 60);
	}
	else if (seconds < 7200)
	{
		gint minutes;
		seconds -= 3600;

		minutes = seconds / 60;
		if (minutes < 5)
		{
			secondary_msg = g_strdup (_("Changes made to the document in the last hour "
						    "will be permanently lost."));
		}
		else
		{
			secondary_msg = g_strdup_printf (
					ngettext ("Changes made to the document in the last hour and "
						  "%d minute will be permanently lost.",
						  "Changes made to the document in the last hour and "
						  "%d minutes will be permanently lost.",
						  minutes),
					minutes);
		}
	}
	else
	{
		gint hours;

		hours = seconds / 3600;

		secondary_msg = g_strdup_printf (
					ngettext ("Changes made to the document in the last %d hour "
					    	  "will be permanently lost.",
						  "Changes made to the document in the last %d hours "
					    	  "will be permanently lost.",
						  hours),
					hours);
	}

	dialog = gtk_message_dialog_new (GTK_WINDOW (window),
					 GTK_DIALOG_DESTROY_WITH_PARENT,
					 GTK_MESSAGE_QUESTION,
					 GTK_BUTTONS_NONE,
					 "%s", primary_msg);

	gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
						  "%s", secondary_msg);
	g_free (primary_msg);
	g_free (secondary_msg);

	gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);

	gtk_dialog_add_buttons (GTK_DIALOG (dialog),
			        _("_Cancel"), GTK_RESPONSE_CANCEL,
				_("_Revert"), GTK_RESPONSE_OK,
				NULL);

	gtk_dialog_set_default_response	(GTK_DIALOG (dialog),
					 GTK_RESPONSE_CANCEL);

	return dialog;
}

void
_gedit_cmd_file_revert (GSimpleAction *action,
                        GVariant      *parameter,
                        gpointer       user_data)
{
	GeditWindow *window = GEDIT_WINDOW (user_data);
	GeditTab *tab;
	GeditDocument *doc;
	GtkWidget *dialog;
	GtkWindowGroup *window_group;

	gedit_debug (DEBUG_COMMANDS);

	tab = gedit_window_get_active_tab (window);
	g_return_if_fail (tab != NULL);

	/* If we are already displaying a notification reverting will drop local
	 * modifications or if the document has not been modified, do not bug
	 * the user further.
	 */
	if (gedit_tab_get_state (tab) == GEDIT_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION ||
	    _gedit_tab_get_can_close (tab))
	{
		do_revert (window, tab);
		return;
	}

	doc = gedit_tab_get_document (tab);
	g_return_if_fail (doc != NULL);
	g_return_if_fail (!gedit_document_is_untitled (doc));

	dialog = revert_dialog (window, doc);

	window_group = gedit_window_get_group (window);

	gtk_window_group_add_window (window_group, GTK_WINDOW (dialog));

	gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);

	g_signal_connect (dialog,
			  "response",
			  G_CALLBACK (revert_dialog_response_cb),
			  window);

	gtk_widget_show (dialog);
}

static void
tab_state_changed_while_saving (GeditTab    *tab,
				GParamSpec  *pspec,
				GeditWindow *window)
{
	GeditTabState state;

	state = gedit_tab_get_state (tab);

	gedit_debug_message (DEBUG_COMMANDS, "State while saving: %d\n", state);

	/* When the state becomes NORMAL, it means the saving operation is
	 * finished.
	 */
	if (state == GEDIT_TAB_STATE_NORMAL)
	{
		g_signal_handlers_disconnect_by_func (tab,
						      G_CALLBACK (tab_state_changed_while_saving),
					      	      window);

		close_tab (tab);
	}
}

static void
save_and_close (GeditTab    *tab,
		GeditWindow *window)
{
	gedit_debug (DEBUG_COMMANDS);

	/* Trace tab state changes */
	g_signal_connect (tab,
			  "notify::state",
			  G_CALLBACK (tab_state_changed_while_saving),
			  window);

	save_tab (tab, window);
}

static void
save_and_close_documents (GList         *docs,
                          GeditWindow   *window,
                          GeditNotebook *notebook)
{
	GList *tabs;
	GList *l;
	GSList *sl;
	SaveAsData *data = NULL;
	GSList *tabs_to_save_and_close = NULL;
	GList *tabs_to_close = NULL;

	gedit_debug (DEBUG_COMMANDS);

	g_return_if_fail ((gedit_window_get_state (window) & GEDIT_WINDOW_STATE_PRINTING) == 0);

	if (notebook != NULL)
	{
		tabs = gtk_container_get_children (GTK_CONTAINER (notebook));
	}
	else
	{
		tabs = _gedit_window_get_all_tabs (window);
	}

	for (l = tabs; l != NULL; l = l->next)
	{
		GeditTab *tab = GEDIT_TAB (l->data);
		GeditTabState state;
		GeditDocument *doc;

		state = gedit_tab_get_state (tab);
		doc = gedit_tab_get_document (tab);

		/* If the state is: ([*] invalid states)
		   - GEDIT_TAB_STATE_NORMAL: close (and if needed save)
		   - GEDIT_TAB_STATE_LOADING: close, we are sure the file is unmodified
		   - GEDIT_TAB_STATE_REVERTING: since the user wants
		     to return back to the version of the file she previously saved, we can close
		     without saving (CHECK: are we sure this is the right behavior, suppose the case
		     the original file has been deleted)
		   - [*] GEDIT_TAB_STATE_SAVING: invalid, ClosAll
		     and Quit are unsensitive if the window state is SAVING.
		   - [*] GEDIT_TAB_STATE_PRINTING: there is not a
		     real reason for not closing in this case, we do not save to avoid to run
		     two operations using the message area at the same time (may be we can remove
		     this limitation in the future). Note that ClosAll
		     and Quit are unsensitive if the window state is PRINTING.
		   - GEDIT_TAB_STATE_SHOWING_PRINT_PREVIEW: close (and if needed save)
		   - GEDIT_TAB_STATE_LOADING_ERROR: close without saving (if the state is LOADING_ERROR then the
		     document is not modified)
		   - GEDIT_TAB_STATE_REVERTING_ERROR: we do not close since the document contains errors
		   - GEDIT_TAB_STATE_SAVING_ERROR: we do not close since the document contains errors
		   - GEDIT_TAB_STATE_GENERIC_ERROR: we do not close since the document contains
		     errors (CHECK: we should problably remove this state)
		   - [*] GEDIT_TAB_STATE_CLOSING: this state is invalid in this case
		*/

		g_return_if_fail (state != GEDIT_TAB_STATE_PRINTING);
		g_return_if_fail (state != GEDIT_TAB_STATE_CLOSING);
		g_return_if_fail (state != GEDIT_TAB_STATE_SAVING);

		if (state != GEDIT_TAB_STATE_SAVING_ERROR &&
		    state != GEDIT_TAB_STATE_GENERIC_ERROR &&
		    state != GEDIT_TAB_STATE_REVERTING_ERROR)
		{
			if (g_list_index (docs, doc) >= 0 &&
			    state != GEDIT_TAB_STATE_LOADING &&
			    state != GEDIT_TAB_STATE_LOADING_ERROR &&
			    state != GEDIT_TAB_STATE_REVERTING) /* FIXME: is this the right behavior with REVERTING ?*/
			{
				GtkSourceFile *file = gedit_document_get_file (doc);

				/* The document must be saved before closing */
				g_return_if_fail (_gedit_document_needs_saving (doc));

				/* FIXME: manage the case of local readonly files owned by the
				 * user is running gedit - Paolo (Dec. 8, 2005) */
				if (gedit_document_is_untitled (doc) ||
				    gtk_source_file_is_readonly (file))
				{
					if (data == NULL)
					{
						data = g_slice_new (SaveAsData);
						data->window = g_object_ref (window);
						data->tabs_to_save_as = NULL;
						data->close_tabs = TRUE;
					}

					data->tabs_to_save_as = g_slist_prepend (data->tabs_to_save_as,
										 g_object_ref (tab));
				}
				else
				{
					tabs_to_save_and_close = g_slist_prepend (tabs_to_save_and_close, tab);
				}
			}
			else
			{
				/* The document can be closed without saving */
				tabs_to_close = g_list_prepend (tabs_to_close, tab);
			}
		}
	}

	g_list_free (tabs);

	/* Close all tabs to close (in a sync way) */
	gedit_window_close_tabs (window, tabs_to_close);
	g_list_free (tabs_to_close);

	/* Save and close all the files in tabs_to_save_and_close */
	for (sl = tabs_to_save_and_close; sl != NULL; sl = sl->next)
	{
		save_and_close (GEDIT_TAB (sl->data), window);
	}

	g_slist_free (tabs_to_save_and_close);

	/* Save As and close all the files in data->tabs_to_save_as. */
	if (data != NULL)
	{
		data->tabs_to_save_as = g_slist_reverse (data->tabs_to_save_as);
		save_as_documents_list (data);
	}
}

static void
save_and_close_document (const GList *docs,
			 GeditWindow *window)
{
	GeditTab *tab;

	gedit_debug (DEBUG_COMMANDS);

	g_return_if_fail (docs->next == NULL);

	tab = gedit_tab_get_from_document (GEDIT_DOCUMENT (docs->data));
	g_return_if_fail (tab != NULL);

	save_and_close (tab, window);
}

static void
close_all_tabs (GeditWindow *window)
{
	gedit_debug (DEBUG_COMMANDS);

	/* There is no document to save -> close all tabs */
	gedit_window_close_all_tabs (window);

	quit_if_needed (window);
}

static void
close_document (GeditWindow   *window,
		GeditDocument *doc)
{
	GeditTab *tab;

	gedit_debug (DEBUG_COMMANDS);

	tab = gedit_tab_get_from_document (doc);
	g_return_if_fail (tab != NULL);

	gedit_window_close_tab (window, tab);
}

static void
close_confirmation_dialog_response_handler (GeditCloseConfirmationDialog *dlg,
                                            gint                          response_id,
                                            GeditWindow                  *window)
{
	GList *selected_documents;
	gboolean is_closing_all;
	GeditNotebook *notebook_to_close;

	gedit_debug (DEBUG_COMMANDS);

	is_closing_all = GPOINTER_TO_BOOLEAN (g_object_get_data (G_OBJECT (window),
	                                                         GEDIT_IS_CLOSING_ALL));

	notebook_to_close = g_object_get_data (G_OBJECT (window), GEDIT_NOTEBOOK_TO_CLOSE);

	gtk_widget_hide (GTK_WIDGET (dlg));

	switch (response_id)
	{
		/* Save and Close */
		case GTK_RESPONSE_YES:
			selected_documents = gedit_close_confirmation_dialog_get_selected_documents (dlg);

			if (selected_documents == NULL)
			{
				if (is_closing_all)
				{
					/* There is no document to save -> close all tabs */
					/* We call gtk_widget_destroy before close_all_tabs
					 * because close_all_tabs could destroy the gedit window */
					gtk_widget_destroy (GTK_WIDGET (dlg));

					close_all_tabs (window);
					return;
				}
				else if (notebook_to_close)
				{
					gedit_notebook_remove_all_tabs (notebook_to_close);
				}
				else
				{
					g_return_if_reached ();
				}
			}
			else
			{
				if (is_closing_all || notebook_to_close)
				{
					GeditNotebook *notebook = is_closing_all ? NULL : notebook_to_close;

					save_and_close_documents (selected_documents, window, notebook);
				}
				else
				{
					save_and_close_document (selected_documents, window);
				}
			}

			g_list_free (selected_documents);
			break;

		/* Close without Saving */
		case GTK_RESPONSE_NO:
			if (is_closing_all)
			{
				/* We call gtk_widget_destroy before close_all_tabs
				 * because close_all_tabs could destroy the gedit window */
				gtk_widget_destroy (GTK_WIDGET (dlg));

				close_all_tabs (window);
				return;
			}
			else if (notebook_to_close)
			{
				gedit_notebook_remove_all_tabs (notebook_to_close);
			}
			else
			{
				const GList *unsaved_documents;

				unsaved_documents = gedit_close_confirmation_dialog_get_unsaved_documents (dlg);
				g_return_if_fail (unsaved_documents->next == NULL);

				close_document (window, GEDIT_DOCUMENT (unsaved_documents->data));
			}

			break;

		/* Do not close */
		default:
			/* Reset is_quitting flag */
			g_object_set_data (G_OBJECT (window),
			                   GEDIT_IS_QUITTING,
			                   GBOOLEAN_TO_POINTER (FALSE));

			g_object_set_data (G_OBJECT (window),
			                   GEDIT_IS_QUITTING_ALL,
			                   GBOOLEAN_TO_POINTER (FALSE));
			break;
	}

	g_object_set_data (G_OBJECT (window), GEDIT_NOTEBOOK_TO_CLOSE, NULL);

	gtk_widget_destroy (GTK_WIDGET (dlg));
}

/* Returns TRUE if the tab can be immediately closed */
static gboolean
tab_can_close (GeditTab  *tab,
	       GtkWindow *window)
{
	GeditDocument *doc;

	gedit_debug (DEBUG_COMMANDS);

	doc = gedit_tab_get_document (tab);

	if (!_gedit_tab_get_can_close (tab))
	{
		GtkWidget *dlg;

		dlg = gedit_close_confirmation_dialog_new_single (window, doc);
		g_signal_connect (dlg,
				  "response",
				  G_CALLBACK (close_confirmation_dialog_response_handler),
				  window);

		gtk_widget_show (dlg);

		return FALSE;
	}

	return TRUE;
}

/* FIXME: we probably need this one public for plugins...
 * maybe even a _list variant. Or maybe it's better make
 * gedit_window_close_tab always run the confirm dialog?
 * we should not allow closing a tab without resetting the
 * GEDIT_IS_CLOSING_ALL flag!
 */
void
_gedit_cmd_file_close_tab (GeditTab    *tab,
			   GeditWindow *window)
{
	gedit_debug (DEBUG_COMMANDS);

	g_return_if_fail (GTK_WIDGET (window) == gtk_widget_get_toplevel (GTK_WIDGET (tab)));

	g_object_set_data (G_OBJECT (window),
			   GEDIT_IS_CLOSING_ALL,
			   GBOOLEAN_TO_POINTER (FALSE));

	g_object_set_data (G_OBJECT (window),
			   GEDIT_IS_QUITTING,
			   GBOOLEAN_TO_POINTER (FALSE));

	g_object_set_data (G_OBJECT (window),
	                   GEDIT_IS_QUITTING_ALL,
	                   GBOOLEAN_TO_POINTER (FALSE));

	if (tab_can_close (tab, GTK_WINDOW (window)))
	{
		gedit_window_close_tab (window, tab);
	}
}

void
_gedit_cmd_file_close (GSimpleAction *action,
                       GVariant      *parameter,
                       gpointer       user_data)
{
	GeditWindow *window = GEDIT_WINDOW (user_data);
	GeditTab *active_tab;

	gedit_debug (DEBUG_COMMANDS);

	active_tab = gedit_window_get_active_tab (window);

	if (active_tab == NULL)
	{
		gtk_widget_destroy (GTK_WIDGET (window));
		return;
	}

	_gedit_cmd_file_close_tab (active_tab, window);
}

static void
file_close_dialog (GeditWindow *window,
                   GList       *unsaved_docs)
{
	GtkWidget *dlg;

	if (unsaved_docs->next == NULL)
	{
		/* There is only one unsaved document */
		GeditTab *tab;
		GeditDocument *doc;

		doc = GEDIT_DOCUMENT (unsaved_docs->data);

		tab = gedit_tab_get_from_document (doc);
		g_return_if_fail (tab != NULL);

		gedit_window_set_active_tab (window, tab);

		dlg = gedit_close_confirmation_dialog_new_single (GTK_WINDOW (window), doc);
	}
	else
	{
		dlg = gedit_close_confirmation_dialog_new (GTK_WINDOW (window), unsaved_docs);
	}

	g_signal_connect (dlg,
	                  "response",
	                  G_CALLBACK (close_confirmation_dialog_response_handler),
	                  window);

	gtk_widget_show (dlg);
}

static GList *
notebook_get_unsaved_documents (GeditNotebook *notebook)
{
	GList *children;
	GList *unsaved_docs = NULL;
	GList *l;

	children = gtk_container_get_children (GTK_CONTAINER (notebook));

	for (l = children; l != NULL; l = g_list_next (l))
	{
		GeditTab *tab = GEDIT_TAB (l->data);

		if (!_gedit_tab_get_can_close (tab))
		{
			GeditDocument *doc;

			doc = gedit_tab_get_document (tab);
			unsaved_docs = g_list_prepend (unsaved_docs, doc);
		}
	}

	g_list_free (children);

	return g_list_reverse (unsaved_docs);
}

/* Close a notebook */
void
_gedit_cmd_file_close_notebook (GeditWindow   *window,
                                GeditNotebook *notebook)
{
	GList *unsaved_docs;

	g_object_set_data (G_OBJECT (window), GEDIT_IS_CLOSING_ALL, GBOOLEAN_TO_POINTER (FALSE));
	g_object_set_data (G_OBJECT (window), GEDIT_IS_QUITTING, GBOOLEAN_TO_POINTER (FALSE));
	g_object_set_data (G_OBJECT (window), GEDIT_IS_QUITTING_ALL, GBOOLEAN_TO_POINTER (FALSE));

	g_object_set_data (G_OBJECT (window), GEDIT_NOTEBOOK_TO_CLOSE, notebook);

	unsaved_docs = notebook_get_unsaved_documents (notebook);

	if (unsaved_docs == NULL)
	{
		/* There is no document to save -> close the notebook */
		gedit_notebook_remove_all_tabs (GEDIT_NOTEBOOK (notebook));
	}
	else
	{
		file_close_dialog (window, unsaved_docs);

		g_list_free (unsaved_docs);
	}
}

/* Close all tabs */
static void
file_close_all (GeditWindow *window,
                gboolean     is_quitting)
{
	GList *unsaved_docs;

	gedit_debug (DEBUG_COMMANDS);

	g_return_if_fail (!(gedit_window_get_state (window) &
	                    (GEDIT_WINDOW_STATE_SAVING |
	                     GEDIT_WINDOW_STATE_PRINTING)));

	g_object_set_data (G_OBJECT (window),
			   GEDIT_IS_CLOSING_ALL,
			   GBOOLEAN_TO_POINTER (TRUE));

	g_object_set_data (G_OBJECT (window),
			   GEDIT_IS_QUITTING,
			   GBOOLEAN_TO_POINTER (is_quitting));

	unsaved_docs = gedit_window_get_unsaved_documents (window);

	if (unsaved_docs != NULL)
	{
		file_close_dialog (window, unsaved_docs);

		g_list_free (unsaved_docs);
	}
	else
	{
		/* There is no document to save -> close all tabs */
		gedit_window_close_all_tabs (window);
		quit_if_needed (window);
	}
}

void
_gedit_cmd_file_close_all (GSimpleAction *action,
                           GVariant      *parameter,
                           gpointer       user_data)
{
	GeditWindow *window = GEDIT_WINDOW (user_data);

	gedit_debug (DEBUG_COMMANDS);

	g_return_if_fail (!(gedit_window_get_state (window) &
			    (GEDIT_WINDOW_STATE_SAVING |
			     GEDIT_WINDOW_STATE_PRINTING)));

	file_close_all (window, FALSE);
}

/* Quit */
static void
quit_all (void)
{
	GList *windows;
	GList *l;
	GApplication *app;

	app = g_application_get_default ();
	windows = gedit_app_get_main_windows (GEDIT_APP (app));

	if (windows == NULL)
	{
		g_application_quit (app);
		return;
	}

	for (l = windows; l != NULL; l = g_list_next (l))
	{
		GeditWindow *window = l->data;

		g_object_set_data (G_OBJECT (window),
		                   GEDIT_IS_QUITTING_ALL,
		                   GBOOLEAN_TO_POINTER (TRUE));

		if (!(gedit_window_get_state (window) &
		      (GEDIT_WINDOW_STATE_SAVING | GEDIT_WINDOW_STATE_PRINTING)))
		{
			file_close_all (window, TRUE);
		}
	}

	g_list_free (windows);
}

void
_gedit_cmd_file_quit (GSimpleAction *action,
                      GVariant      *parameter,
                      gpointer       user_data)
{
	GeditWindow *window = GEDIT_WINDOW (user_data);

	gedit_debug (DEBUG_COMMANDS);

	if (window == NULL)
	{
		quit_all ();
		return;
	}

	g_return_if_fail (!(gedit_window_get_state (window) &
	                    (GEDIT_WINDOW_STATE_SAVING |
	                     GEDIT_WINDOW_STATE_PRINTING)));

	file_close_all (window, TRUE);
}

/* ex:set ts=8 noet: */
