claws-mail/src/prefs_template.c

/*
 * Sylpheed templates subsystem 
 * Copyright (C) 2001 Alexander Barinov
 * Copyright (C) 2001-2007 Hiroyuki Yamamoto and the Claws Mail team
 *
 * 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 3 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/>.
 * 
 */

#include "defs.h"

#include <glib.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <string.h>
#include <dirent.h>
#include <sys/stat.h>

#include "template.h"
#include "main.h"
#include "prefs_gtk.h"
#include "inc.h"
#include "utils.h"
#include "gtkutils.h"
#include "alertpanel.h"
#include "manage_window.h"
#include "compose.h"
#include "addr_compl.h"
#include "quote_fmt.h"
#include "prefs_common.h"
#include "manual.h"
#include "gtkutils.h"

enum {
	TEMPL_TEXT,
	TEMPL_DATA,
	TEMPL_AUTO_DATA,	/*!< auto pointer */
	N_TEMPL_COLUMNS
};

static struct Templates {
	GtkWidget *window;
	GtkWidget *ok_btn;
	GtkWidget *list_view;
	GtkWidget *entry_name;
	GtkWidget *entry_subject;
	GtkWidget *entry_to;
	GtkWidget *entry_cc;	
	GtkWidget *entry_bcc;
	GtkWidget *text_value;
} templates;

static int modified = FALSE;
static int modified_list = FALSE;
/* widget creating functions */
static void prefs_template_window_create	(void);
static void prefs_template_window_setup		(void);
static void prefs_template_clear		(void);

static GSList *prefs_template_get_list		(void);

/* callbacks */
static gint prefs_template_deleted_cb		(GtkWidget	*widget,
						 GdkEventAny	*event,
						 gpointer	 data);
static gboolean prefs_template_key_pressed_cb	(GtkWidget	*widget,
						 GdkEventKey	*event,
						 gpointer	 data);
static void prefs_template_cancel_cb		(void);
static void prefs_template_ok_cb		(void);
static void prefs_template_register_cb		(void);
static void prefs_template_substitute_cb	(void);
static void prefs_template_delete_cb		(void);
static void prefs_template_top_cb		(void);
static void prefs_template_up_cb		(void);
static void prefs_template_down_cb	(void);
static void prefs_template_bottom_cb	(void);

static GtkListStore* prefs_template_create_data_store	(void);
static void prefs_template_list_view_insert_template	(GtkWidget *list_view,
							 GtkTreeIter *row_iter,
							 const gchar *template,
							 Template *data);
static GtkWidget *prefs_template_list_view_create	(void);
static void prefs_template_create_list_view_columns	(GtkWidget *list_view);
static gboolean prefs_template_selected			(GtkTreeSelection *selector,
							 GtkTreeModel *model, 
							 GtkTreePath *path,
							 gboolean currently_selected,
							 gpointer data);

/* Called from mainwindow.c */
void prefs_template_open(void)
{
	inc_lock();

	if (!templates.window)
		prefs_template_window_create();

	prefs_template_window_setup();
	gtk_widget_show(templates.window);
}

/*!
 *\brief	Save Gtk object size to prefs dataset
 */
static void prefs_template_size_allocate_cb(GtkWidget *widget,
					 GtkAllocation *allocation)
{
	g_return_if_fail(allocation != NULL);

	prefs_common.templateswin_width = allocation->width;
	prefs_common.templateswin_height = allocation->height;
}

static void prefs_template_window_create(void)
{
	/* window structure ;) */
	GtkWidget *window;
	GtkWidget   *vpaned;
	GtkWidget     *vbox1;
	GtkWidget       *table; /* including : entry_[name|to|cc|bcc|subject] */
	GtkWidget       *scroll2;
	GtkWidget         *text_value;
	GtkWidget     *vbox2;
	GtkWidget       *hbox2;
	GtkWidget         *arrow1;
	GtkWidget         *hbox3;
	GtkWidget           *reg_btn;
	GtkWidget           *subst_btn;
	GtkWidget           *del_btn;
	GtkWidget         *desc_btn;
	GtkWidget       *hbox4;
	GtkWidget         *scroll1;
	GtkWidget           *list_view;
	GtkWidget         *vbox3;
	GtkWidget           *spc_vbox;
	GtkWidget           *top_btn;
	GtkWidget           *up_btn;
	GtkWidget           *down_btn;
	GtkWidget           *bottom_btn;
	GtkWidget       *confirm_area;
	GtkWidget         *help_btn;
	GtkWidget         *cancel_btn;
	GtkWidget         *ok_btn;
	static GdkGeometry geometry;
	gint i;
	GtkTooltips *tooltips;

	debug_print("Creating templates configuration window...\n");

	/* main window */
	window = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "prefs_template");
	gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
	gtk_window_set_modal(GTK_WINDOW(window), TRUE);
	gtk_window_set_resizable(GTK_WINDOW(window), TRUE);

	/* vpaned to separate template settings from templates list */
	vpaned = gtk_vpaned_new();
	gtk_widget_show(vpaned);
	gtk_container_add(GTK_CONTAINER(window), vpaned);

	/* vbox to handle template name and content */
	vbox1 = gtk_vbox_new(FALSE, 6);
	gtk_widget_show(vbox1);
	gtk_container_set_border_width(GTK_CONTAINER(vbox1), 8);
	gtk_paned_pack1(GTK_PANED(vpaned), vbox1, FALSE, FALSE);

	table = gtk_table_new(5, 2, FALSE);
	gtk_table_set_row_spacings (GTK_TABLE (table), VSPACING_NARROW_2);
	gtk_table_set_col_spacings (GTK_TABLE (table), 4);
	gtk_widget_show(table);
	gtk_box_pack_start (GTK_BOX (vbox1), table, FALSE, FALSE, 0);

	tooltips = gtk_tooltips_new();

	struct
	{
		gchar *label;
		GtkWidget **entry;
		gboolean compl;
		gchar *tooltips;
	} tab[] = {
		{_("Name"),	&templates.entry_name,		FALSE,
			_("This name is used as the Menu item")},
		{_("To"),	&templates.entry_to,		TRUE, 	NULL},
		{_("Cc"),	&templates.entry_cc,		TRUE, 	NULL},
		{_("Bcc"),	&templates.entry_bcc,		TRUE, 	NULL},
		{_("Subject"),	&templates.entry_subject,	FALSE,	NULL},
		{NULL,		NULL,				FALSE,	NULL}
	};

	for (i=0; tab[i].label; i++) {

		GtkWidget *label;

		label = gtk_label_new(tab[i].label);
		gtk_widget_show(label);
		gtk_table_attach(GTK_TABLE(table), label, 0, 1, i, (i + 1),
				(GtkAttachOptions) (GTK_FILL),
				(GtkAttachOptions) 0, 0, 0);
		gtk_misc_set_alignment(GTK_MISC(label), 1, 0.5);

		*(tab[i].entry) = gtk_entry_new();
		gtk_widget_show(*(tab[i].entry));
		gtk_table_attach(GTK_TABLE(table), *(tab[i].entry), 1, 2, i, (i + 1),
				(GtkAttachOptions) (GTK_EXPAND|GTK_SHRINK|GTK_FILL),
				(GtkAttachOptions) 0, 0, 0);
		gtk_tooltips_set_tip(tooltips, *(tab[i].entry), tab[i].tooltips, NULL);

		if (tab[i].compl)
			address_completion_register_entry(
				GTK_ENTRY(*(tab[i].entry)), TRUE);
	}

	/* template content */
	scroll2 = gtk_scrolled_window_new(NULL, NULL);
	gtk_widget_show(scroll2);
	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll2),
				       GTK_POLICY_AUTOMATIC,
				       GTK_POLICY_AUTOMATIC);
	gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll2),
					    GTK_SHADOW_IN);
	gtk_box_pack_start(GTK_BOX(vbox1), scroll2, TRUE, TRUE, 0);

	text_value = gtk_text_view_new();
	if (prefs_common.textfont) {
		PangoFontDescription *font_desc;

		font_desc = pango_font_description_from_string
						(prefs_common.textfont);
		if (font_desc) {
			gtk_widget_modify_font(text_value, font_desc);
			pango_font_description_free(font_desc);
		}
	}
	gtk_widget_show(text_value);
	gtk_widget_set_size_request(text_value, -1, 120);
	gtk_container_add(GTK_CONTAINER(scroll2), text_value);
	gtk_text_view_set_editable(GTK_TEXT_VIEW(text_value), TRUE);
	gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text_value), GTK_WRAP_WORD);

	/* vbox for buttons and templates list */
	vbox2 = gtk_vbox_new(FALSE, 6);
	gtk_widget_show(vbox2);
	gtk_container_set_border_width(GTK_CONTAINER(vbox2), 8);
	gtk_paned_pack2(GTK_PANED(vpaned), vbox2, TRUE, FALSE);

	/* register | substitute | delete */
	hbox2 = gtk_hbox_new(FALSE, 4);
	gtk_widget_show(hbox2);
	gtk_box_pack_start(GTK_BOX(vbox2), hbox2, FALSE, FALSE, 0);

	arrow1 = gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_OUT);
	gtk_widget_show(arrow1);
	gtk_box_pack_start(GTK_BOX(hbox2), arrow1, FALSE, FALSE, 0);
	gtk_widget_set_size_request(arrow1, -1, 16);

	hbox3 = gtk_hbox_new(TRUE, 4);
	gtk_widget_show(hbox3);
	gtk_box_pack_start(GTK_BOX(hbox2), hbox3, FALSE, FALSE, 0);

	reg_btn = gtk_button_new_from_stock(GTK_STOCK_ADD);
	gtk_widget_show(reg_btn);
	gtk_box_pack_start(GTK_BOX(hbox3), reg_btn, FALSE, TRUE, 0);
	g_signal_connect(G_OBJECT (reg_btn), "clicked",
			 G_CALLBACK (prefs_template_register_cb), NULL);

	subst_btn = gtkut_get_replace_btn(_("Replace"));
	gtk_widget_show(subst_btn);
	gtk_box_pack_start(GTK_BOX(hbox3), subst_btn, FALSE, TRUE, 0);
	g_signal_connect(G_OBJECT(subst_btn), "clicked",
			 G_CALLBACK(prefs_template_substitute_cb),
			 NULL);

	del_btn = gtk_button_new_from_stock(GTK_STOCK_DELETE);
	gtk_widget_show(del_btn);
	gtk_box_pack_start(GTK_BOX(hbox3), del_btn, FALSE, TRUE, 0);
	g_signal_connect(G_OBJECT(del_btn), "clicked",
			 G_CALLBACK(prefs_template_delete_cb), NULL);

#if GTK_CHECK_VERSION(2, 8, 0)
	desc_btn = gtk_button_new_from_stock(GTK_STOCK_INFO);
#else
	desc_btn = gtk_button_new_with_label(_(" Symbols... "));
#endif
	gtk_widget_show(desc_btn);
	gtk_box_pack_end(GTK_BOX(hbox2), desc_btn, FALSE, FALSE, 0);
	g_signal_connect(G_OBJECT(desc_btn), "clicked",
			 G_CALLBACK(quote_fmt_quote_description), NULL);

	/* templates list */
	hbox4 = gtk_hbox_new(FALSE, 8);
	gtk_widget_show(hbox4);
	gtk_box_pack_start(GTK_BOX(vbox2), hbox4, TRUE, TRUE, 0);

	scroll1 = gtk_scrolled_window_new(NULL, NULL);
	gtk_widget_show(scroll1);
	gtk_box_pack_start(GTK_BOX(hbox4), scroll1, TRUE, TRUE, 0);
	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll1),
				       GTK_POLICY_AUTOMATIC,
				       GTK_POLICY_AUTOMATIC);
				       
	vbox3 = gtk_vbox_new(FALSE, 8);
	gtk_widget_show(vbox3);
	gtk_box_pack_start(GTK_BOX(hbox4), vbox3, FALSE, FALSE, 0);

	top_btn = gtk_button_new_from_stock(GTK_STOCK_GOTO_TOP);
	gtk_widget_show(top_btn);
	gtk_box_pack_start(GTK_BOX(vbox3), top_btn, FALSE, FALSE, 0);
	g_signal_connect(G_OBJECT(top_btn), "clicked",
			 G_CALLBACK(prefs_template_top_cb), NULL);

	PACK_VSPACER(vbox3, spc_vbox, VSPACING_NARROW_2);

	up_btn = gtk_button_new_from_stock(GTK_STOCK_GO_UP);
	gtk_widget_show(up_btn);
	gtk_box_pack_start (GTK_BOX(vbox3), up_btn, FALSE, FALSE, 0);
	g_signal_connect(G_OBJECT(up_btn), "clicked",
			 G_CALLBACK(prefs_template_up_cb), NULL);

	down_btn = gtk_button_new_from_stock(GTK_STOCK_GO_DOWN);
	gtk_widget_show (down_btn);
	gtk_box_pack_start(GTK_BOX (vbox3), down_btn, FALSE, FALSE, 0);
	g_signal_connect(G_OBJECT (down_btn), "clicked",
			 G_CALLBACK(prefs_template_down_cb), NULL);

	PACK_VSPACER(vbox3, spc_vbox, VSPACING_NARROW_2);

	bottom_btn = gtk_button_new_from_stock(GTK_STOCK_GOTO_BOTTOM);
	gtk_widget_show(bottom_btn);
	gtk_box_pack_start(GTK_BOX(vbox3), bottom_btn, FALSE, FALSE, 0);
	g_signal_connect(G_OBJECT(bottom_btn), "clicked",
			 G_CALLBACK(prefs_template_bottom_cb), NULL);

	list_view = prefs_template_list_view_create();
	gtk_widget_show(list_view);
	gtk_widget_set_size_request(scroll1, -1, 140);
	gtk_container_add(GTK_CONTAINER(scroll1), list_view);

	/* help | cancel | ok */
	gtkut_stock_button_set_create_with_help(&confirm_area, &help_btn,
			&cancel_btn, GTK_STOCK_CANCEL,
			&ok_btn, GTK_STOCK_OK,
			NULL, NULL);
	gtk_widget_show(confirm_area);
	gtk_box_pack_end(GTK_BOX(vbox2), confirm_area, FALSE, FALSE, 0);
	gtk_widget_grab_default(ok_btn);

	gtk_window_set_title(GTK_WINDOW(window), _("Template configuration"));

	g_signal_connect(G_OBJECT(window), "delete_event",
			 G_CALLBACK(prefs_template_deleted_cb), NULL);
	g_signal_connect(G_OBJECT(window), "size_allocate",
			 G_CALLBACK(prefs_template_size_allocate_cb), NULL);
	g_signal_connect(G_OBJECT(window), "key_press_event",
			 G_CALLBACK(prefs_template_key_pressed_cb), NULL);
	MANAGE_WINDOW_SIGNALS_CONNECT(window);
	g_signal_connect(G_OBJECT(ok_btn), "clicked",
			 G_CALLBACK(prefs_template_ok_cb), NULL);
	g_signal_connect(G_OBJECT(cancel_btn), "clicked",
			 G_CALLBACK(prefs_template_cancel_cb), NULL);
	g_signal_connect(G_OBJECT(help_btn), "clicked",
			 G_CALLBACK(manual_open_with_anchor_cb),
			 MANUAL_ANCHOR_TEMPLATES);

	address_completion_start(window);

	if (!geometry.min_height) {
		geometry.min_width = 480;
		geometry.min_height = 540;
	}

	gtk_window_set_geometry_hints(GTK_WINDOW(window), NULL, &geometry,
				      GDK_HINT_MIN_SIZE);
	gtk_widget_set_size_request(window, prefs_common.templateswin_width,
				    prefs_common.templateswin_height);

	templates.window = window;
	templates.ok_btn = ok_btn;
	templates.list_view = list_view;
	templates.text_value = text_value;
}

static void prefs_template_window_setup(void)
{
	GSList *tmpl_list;
	GSList *cur;
	Template *tmpl;
	GtkListStore *store;
	GtkTextBuffer *buffer;
	
	store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW
				(templates.list_view)));

	manage_window_set_transient(GTK_WINDOW(templates.window));
	gtk_widget_grab_focus(templates.ok_btn);

	gtk_list_store_clear(store);

	prefs_template_list_view_insert_template(templates.list_view,
						 NULL, _("(New)"),
						 NULL);
	
	tmpl_list = template_read_config();

	for (cur = tmpl_list; cur != NULL; cur = cur->next) {
		tmpl = (Template *)cur->data;
		prefs_template_list_view_insert_template(templates.list_view,
							 NULL, tmpl->name, 
							 tmpl);
	}

	gtk_entry_set_text(GTK_ENTRY(templates.entry_name), "");
	gtk_entry_set_text(GTK_ENTRY(templates.entry_to), "");
	gtk_entry_set_text(GTK_ENTRY(templates.entry_cc), "");
	gtk_entry_set_text(GTK_ENTRY(templates.entry_bcc), "");			
	gtk_entry_set_text(GTK_ENTRY(templates.entry_subject), "");
	
	buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(templates.text_value));
	gtk_text_buffer_set_text(buffer, "", -1);

	g_slist_free(tmpl_list);
}

static void prefs_template_clear(void)
{
	GtkListStore *store;

	store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW
				(templates.list_view)));
	gtk_list_store_clear(store);
}

static gint prefs_template_deleted_cb(GtkWidget *widget, GdkEventAny *event,
				      gpointer data)
{
	prefs_template_cancel_cb();
	return TRUE;
}

static gboolean prefs_template_key_pressed_cb(GtkWidget *widget,
					      GdkEventKey *event, gpointer data)
{
	if (event && event->keyval == GDK_Escape)
		prefs_template_cancel_cb();
	else {
		GtkWidget *focused = gtkut_get_focused_child(
					GTK_CONTAINER(widget));
		if (focused && GTK_IS_EDITABLE(focused)) {
			modified = TRUE;
		}
	}
	return FALSE;
}

static void prefs_template_ok_cb(void)
{
	GSList *tmpl_list;

	if (modified && alertpanel(_("Entry not saved"),
				 _("The entry was not saved. Close anyway?"),
				 GTK_STOCK_CLOSE, _("+_Continue editing"), 
				 NULL) != G_ALERTDEFAULT) {
		return;
	} else if (modified_list && alertpanel(_("Templates list not saved"),
				 _("The templates list has been modified. Close anyway?"),
				 GTK_STOCK_CLOSE, _("+_Continue editing"), 
				 NULL) != G_ALERTDEFAULT) {
		return;
	}
	modified = FALSE;
	modified_list = FALSE;
	tmpl_list = prefs_template_get_list();
	template_set_config(tmpl_list);
	compose_reflect_prefs_all();
	prefs_template_clear();
	gtk_widget_hide(templates.window);
	inc_unlock();
}

static void prefs_template_cancel_cb(void)
{
	if (modified && alertpanel(_("Entry not saved"),
				 _("The entry was not saved. Close anyway?"),
				 GTK_STOCK_CLOSE, _("+_Continue editing"),
				 NULL) != G_ALERTDEFAULT) {
		return;
	} else if (modified_list && alertpanel(_("Templates list not saved"),
				 _("The templates list has been modified. Close anyway?"),
				 GTK_STOCK_CLOSE, _("+_Continue editing"), 
				 NULL) != G_ALERTDEFAULT) {
		return;
	}
	modified = FALSE;
	modified_list = FALSE;
	prefs_template_clear();
	gtk_widget_hide(templates.window);
	inc_unlock();
}

/*!
 *\brief	Request list for storage. New list is owned
 *		by template.c...
 */
static GSList *prefs_template_get_list(void)
{
	GSList *tmpl_list = NULL;
	Template *tmpl;
	GtkTreeModel *model;
	GtkTreeIter iter;

	model = gtk_tree_view_get_model(GTK_TREE_VIEW(templates.list_view));
	if (!gtk_tree_model_get_iter_first(model, &iter))
		return NULL;

	do {
		gtk_tree_model_get(model, &iter,
				   TEMPL_DATA, &tmpl,
				   -1);
		
		if (tmpl) {
			Template *ntmpl;
			
			ntmpl = g_new(Template, 1);
			ntmpl->load_filename = NULL;
			ntmpl->name    = tmpl->name && *(tmpl->name) 
					 ? g_strdup(tmpl->name) 
					 : NULL;
			ntmpl->subject = tmpl->subject && *(tmpl->subject) 
					 ? g_strdup(tmpl->subject) 
					 : NULL;
			ntmpl->to      = tmpl->to && *(tmpl->to)
					 ? g_strdup(tmpl->to)
					 : NULL;
			ntmpl->cc      = tmpl->cc && *(tmpl->cc)
					 ? g_strdup(tmpl->cc)
					 : NULL;
			ntmpl->bcc     = tmpl->bcc && *(tmpl->bcc)
					 ? g_strdup(tmpl->bcc)
					 : NULL;	
			ntmpl->value   = tmpl->value && *(tmpl->value)
			                 ? g_strdup(tmpl->value)
					 : NULL;
			tmpl_list = g_slist_append(tmpl_list, ntmpl);
		}			
	
	} while (gtk_tree_model_iter_next(model, &iter)); 

	return tmpl_list;
}

gboolean prefs_template_string_is_valid(gchar *string, gint *line)
{
	if (string && *string != '\0') {
		gchar *parsed_buf;
		MsgInfo dummyinfo;

		memset(&dummyinfo, 0, sizeof(MsgInfo));
#ifdef USE_ASPELL
		quote_fmt_init(&dummyinfo, NULL, NULL, TRUE, NULL, NULL);
#else
		quote_fmt_init(&dummyinfo, NULL, NULL, TRUE, NULL);
#endif
		quote_fmt_scan_string(string);
		quote_fmt_parse();
		parsed_buf = quote_fmt_get_buffer();
		if (!parsed_buf) {
			if (line)
				*line = quote_fmt_get_line();
			return FALSE;
		}
		quote_fmt_reset_vartable();
	}
	return TRUE;
}

static gboolean prefs_template_list_view_set_row(GtkTreeIter *row)
/* return TRUE if the row could be modified */
{
	Template *tmpl;
	gchar *name;
	gchar *subject;
	gchar *to;
	gchar *cc;
	gchar *bcc;	
	gchar *value;
	GtkTextBuffer *buffer;
	GtkTextIter start, end;
	GtkTreeModel *model;
	gint line;

	model = gtk_tree_view_get_model(GTK_TREE_VIEW(templates.list_view));

	buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(templates.text_value));
	gtk_text_buffer_get_start_iter(buffer, &start);
	gtk_text_buffer_get_iter_at_offset(buffer, &end, -1);
	value = gtk_text_buffer_get_text(buffer, &start, &end, FALSE);

	if (value && *value == '\0') {
			g_free(value);
		value = NULL;
		}
	if (!prefs_template_string_is_valid(value, &line)) {
		alertpanel_error(_("Template body format error at line %d."), line);
		g_free(value);
		return FALSE;
	}

	name = gtk_editable_get_chars(GTK_EDITABLE(templates.entry_name),
				      0, -1);
	if (*name == '\0') {
		alertpanel_error(_("Template name is not set."));
		g_free(value);
		return FALSE;
	}
	to = gtk_editable_get_chars(GTK_EDITABLE(templates.entry_to),
				    0, -1);
	cc = gtk_editable_get_chars(GTK_EDITABLE(templates.entry_cc),
				    0, -1);
	bcc = gtk_editable_get_chars(GTK_EDITABLE(templates.entry_bcc),
				    0, -1);
	subject = gtk_editable_get_chars(GTK_EDITABLE(templates.entry_subject),
					 0, -1);

	if (to && *to == '\0') {
		g_free(to);
		to = NULL;
	}
	if (cc && *cc == '\0') {
		g_free(cc);
		cc = NULL;
	}
	if (bcc && *bcc == '\0') {
		g_free(bcc);
		bcc = NULL;
	}
	if (subject && *subject == '\0') {
		g_free(subject);
		subject = NULL;
	}

	if (!prefs_template_string_is_valid(to, NULL)) {
		alertpanel_error(_("Template To format error."));
		g_free(to);
		g_free(value);
		return FALSE;
	}
	if (!prefs_template_string_is_valid(cc, NULL)) {
		alertpanel_error(_("Template Cc format error."));	
		g_free(cc);
		g_free(value);
		return FALSE;
	}
	if (!prefs_template_string_is_valid(bcc, NULL)) {
		alertpanel_error(_("Template Bcc format error."));	
		g_free(bcc);
		g_free(value);
		return FALSE;
	}
	if (!prefs_template_string_is_valid(subject, NULL)) {
		alertpanel_error(_("Template subject format error."));	
		g_free(subject);
		g_free(value);
		return FALSE;
	}
	
	tmpl = g_new(Template, 1);
	tmpl->load_filename = NULL;
	tmpl->name = name;
	tmpl->subject = subject;
	tmpl->to = to;
	tmpl->cc = cc;
	tmpl->bcc = bcc;	
	tmpl->value = value;

	prefs_template_list_view_insert_template(templates.list_view,
						 row, tmpl->name, tmpl);

	return TRUE;
}

static void prefs_template_register_cb(void)
{
	modified = !prefs_template_list_view_set_row(NULL);
	modified_list = TRUE;
}

static void prefs_template_substitute_cb(void)
{
	Template *tmpl;
	GtkTreeIter row;
	GtkTreeSelection *selection;
	GtkTreeModel *model;

	selection = gtk_tree_view_get_selection
			(GTK_TREE_VIEW(templates.list_view));
	
	if (!gtk_tree_selection_get_selected(selection, &model, &row))
		return;

	gtk_tree_model_get(model, &row, 
			   TEMPL_DATA, &tmpl,
			   -1);

	if (!tmpl) return;

	modified = !prefs_template_list_view_set_row(&row);
	modified_list = TRUE;
}

static void prefs_template_delete_cb(void)
{
	Template *tmpl;
	GtkTreeIter row;
	GtkTreeSelection *selection;
	GtkTreeModel *model;

	selection = gtk_tree_view_get_selection
			(GTK_TREE_VIEW(templates.list_view));
	
	if (!gtk_tree_selection_get_selected(selection, &model, &row))
		return;

	gtk_tree_model_get(model, &row, 
			   TEMPL_DATA, &tmpl,
			   -1);

	if (!tmpl) 
		return;

	if (alertpanel(_("Delete template"),
		       _("Do you really want to delete this template?"),
		       GTK_STOCK_CANCEL, GTK_STOCK_DELETE,
		       NULL) != G_ALERTALTERNATE)
		return;

	gtk_list_store_remove(GTK_LIST_STORE(model), &row);
	modified_list = TRUE;	
}

static void prefs_template_top_cb(void)
{
	gint row;
	GtkTreeIter top, sel;
	GtkTreeModel *model;

	row = gtkut_list_view_get_selected_row(templates.list_view);
	if (row <= 1) 
		return;

	model = gtk_tree_view_get_model(GTK_TREE_VIEW(templates.list_view));		
	
	if (!gtk_tree_model_iter_nth_child(model, &top, NULL, 0)
	||  !gtk_tree_model_iter_nth_child(model, &sel, NULL, row))
		return;

	gtk_list_store_move_after(GTK_LIST_STORE(model), &sel, &top);
	gtkut_list_view_select_row(templates.list_view, 1);
	modified_list = TRUE;
}

static void prefs_template_up_cb(void)
{
	gint row;
	GtkTreeIter top, sel;
	GtkTreeModel *model;

	row = gtkut_list_view_get_selected_row(templates.list_view);
	if (row <= 1) 
		return;
		
	model = gtk_tree_view_get_model(GTK_TREE_VIEW(templates.list_view));	

	if (!gtk_tree_model_iter_nth_child(model, &top, NULL, row - 1)
	||  !gtk_tree_model_iter_nth_child(model, &sel, NULL, row))
		return;

	gtk_list_store_swap(GTK_LIST_STORE(model), &top, &sel);
	gtkut_list_view_select_row(templates.list_view, row - 1);
	modified_list = TRUE;
}

static void prefs_template_down_cb(void)
{
	gint row, n_rows;
	GtkTreeIter top, sel;
	GtkTreeModel *model;

	model = gtk_tree_view_get_model(GTK_TREE_VIEW(templates.list_view));	
	n_rows = gtk_tree_model_iter_n_children(model, NULL);
	row = gtkut_list_view_get_selected_row(templates.list_view);
	if (row < 1 || row >= n_rows - 1)
		return;

	if (!gtk_tree_model_iter_nth_child(model, &top, NULL, row)
	||  !gtk_tree_model_iter_nth_child(model, &sel, NULL, row + 1))
		return;
			
	gtk_list_store_swap(GTK_LIST_STORE(model), &top, &sel);
	gtkut_list_view_select_row(templates.list_view, row + 1);
	modified_list = TRUE;
}

static void prefs_template_bottom_cb(void)
{
	gint row, n_rows;
	GtkTreeIter top, sel;
	GtkTreeModel *model;

	model = gtk_tree_view_get_model(GTK_TREE_VIEW(templates.list_view));	
	n_rows = gtk_tree_model_iter_n_children(model, NULL);
	row = gtkut_list_view_get_selected_row(templates.list_view);
	if (row < 1 || row >= n_rows - 1)
		return;

	if (!gtk_tree_model_iter_nth_child(model, &top, NULL, row)
	||  !gtk_tree_model_iter_nth_child(model, &sel, NULL, n_rows - 1))
		return;

	gtk_list_store_move_after(GTK_LIST_STORE(model), &top, &sel);		
	gtkut_list_view_select_row(templates.list_view, n_rows - 1);
	modified_list = TRUE;
}

static GtkListStore* prefs_template_create_data_store(void)
{
	return gtk_list_store_new(N_TEMPL_COLUMNS,
				  G_TYPE_STRING,	
				  G_TYPE_POINTER,
				  G_TYPE_AUTO_POINTER,
				  -1);
}

static void prefs_template_list_view_insert_template(GtkWidget *list_view,
						     GtkTreeIter *row_iter,
						     const gchar *template,
						     Template *data)
{
	GtkTreeIter iter;
	GtkTreeModel *model = gtk_tree_view_get_model
					(GTK_TREE_VIEW(list_view));
	GtkListStore *list_store = GTK_LIST_STORE(model);
	GAuto *auto_data;					

	if (row_iter == NULL) {
		/* append new */
		gtk_list_store_append(list_store, &iter);
	} else {
		/* modify the existing */
		iter = *row_iter;
	}
		
	auto_data = g_auto_pointer_new_with_free(data, (GFreeFunc) template_free);  

	/* if replacing data in an existing row, the auto pointer takes care
	 * of destroying the Template data */
	gtk_list_store_set(list_store, &iter,
			   TEMPL_TEXT, template,
			   TEMPL_DATA, data,
			   TEMPL_AUTO_DATA, auto_data,
			   -1);

	g_auto_pointer_free(auto_data);			   
}

static GtkWidget *prefs_template_list_view_create(void)
{
	GtkTreeView *list_view;
	GtkTreeSelection *selector;
	GtkTreeModel *model;

	model = GTK_TREE_MODEL(prefs_template_create_data_store());
	list_view = GTK_TREE_VIEW(gtk_tree_view_new_with_model(model));
	g_object_unref(model);	
	
	gtk_tree_view_set_rules_hint(list_view, prefs_common.use_stripes_everywhere);
	gtk_tree_view_set_reorderable(list_view, TRUE);

	selector = gtk_tree_view_get_selection(list_view);
	gtk_tree_selection_set_mode(selector, GTK_SELECTION_BROWSE);
	gtk_tree_selection_set_select_function(selector, prefs_template_selected,
					       NULL, NULL);

	/* create the columns */
	prefs_template_create_list_view_columns(GTK_WIDGET(list_view));

	return GTK_WIDGET(list_view);
}

static void prefs_template_create_list_view_columns(GtkWidget *list_view)
{
	GtkTreeViewColumn *column;
	GtkCellRenderer *renderer;

	renderer = gtk_cell_renderer_text_new();
	column = gtk_tree_view_column_new_with_attributes
			(_("Current templates"),
			 renderer,
			 "text", TEMPL_TEXT,
			 NULL);
	gtk_tree_view_append_column(GTK_TREE_VIEW(list_view), column);		
}

static gboolean prefs_template_selected(GtkTreeSelection *selector,
				        GtkTreeModel *model, 
				        GtkTreePath *path,
				        gboolean currently_selected,
				        gpointer data)
{
	Template *tmpl;
	Template tmpl_def;
	GtkTextBuffer *buffer;
	GtkTextIter iter;
	GtkTreeIter titer;

	if (currently_selected)
		return TRUE;

	if (!gtk_tree_model_get_iter(model, &titer, path))
		return TRUE;

	tmpl_def.name = _("Template");
	tmpl_def.subject = "";
	tmpl_def.to = "";
	tmpl_def.cc = "";
	tmpl_def.bcc = "";	
	tmpl_def.value = "";

	gtk_tree_model_get(model, &titer,
			   TEMPL_DATA, &tmpl,
			   -1);

	if (!tmpl) 
		tmpl = &tmpl_def;

	gtk_entry_set_text(GTK_ENTRY(templates.entry_name), tmpl->name);
	gtk_entry_set_text(GTK_ENTRY(templates.entry_to),
			   tmpl->to ? tmpl->to : "");
	gtk_entry_set_text(GTK_ENTRY(templates.entry_cc),
			   tmpl->cc ? tmpl->cc : "");
	gtk_entry_set_text(GTK_ENTRY(templates.entry_bcc),
			   tmpl->bcc ? tmpl->bcc : "");			
	gtk_entry_set_text(GTK_ENTRY(templates.entry_subject),
			   tmpl->subject ? tmpl->subject : "");
	
	buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(templates.text_value));
	gtk_text_buffer_set_text(buffer, "", -1);
	gtk_text_buffer_get_start_iter(buffer, &iter);
	gtk_text_buffer_insert(buffer, &iter, tmpl->value, -1);

	return TRUE;
}