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/* mg-util.c
* Copyright (C) 2004 Vivien Malerba <malerba@gnome-db.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "mg-defs.h"
#include "mg-util.h"
#include <libgda/libgda.h>
#include "mg-server.h"
#include "mg-query.h"
#include "mg-renderer.h"
#include "mg-entity.h"
/**
* mg_util_query_execute_modif
* @query: the #MgQuery to be executed
* @context: a #MgContext object
* @ask_confirm_insert:
* @ask_confirm_update:
* @ask_confirm_delete:
* @parent_window: a #GtkWindow object, or a #GtkWidget and the parent window will be found automatically
* @user_cancelled: a place to store if the user cancelled the query if the choice was given, or %NULL
* @query_error: a place to store if there was an error, or %NULL
*
* Executes @query and displays question and information dialogs if necessary.
* If a user confirmation was required and the user cancelled the execution, then
* the returned value is FALSE.
*
* Returns: TRUE if the query was executed.
*/
gboolean
mg_util_query_execute_modif (MgQuery *query, MgContext *context,
gboolean ask_confirm_insert,
gboolean ask_confirm_update,
gboolean ask_confirm_delete,
GtkWidget *parent_window,
gboolean *user_cancelled,
gboolean *query_error)
{
gchar *sql = NULL;
MgQueryType qtype;
gchar *confirm = NULL;
gboolean do_execute = TRUE;
gboolean allok = TRUE;
GError *error = NULL;
g_return_val_if_fail (query && IS_MG_QUERY (query), FALSE);
/* find the GtkWindow object for @parent_window */
while (parent_window && !GTK_IS_WINDOW (parent_window))
parent_window = gtk_widget_get_parent (parent_window);
sql = mg_renderer_render_as_sql (MG_RENDERER (query), context, 0, &error);
qtype = mg_query_get_query_type (query);
switch (qtype) {
case MG_QUERY_TYPE_INSERT:
if (ask_confirm_insert)
confirm = _("Execute the following insertion query ?");
break;
case MG_QUERY_TYPE_UPDATE:
if (ask_confirm_update)
confirm = _("Execute the following update query ?");
break;
case MG_QUERY_TYPE_DELETE:
if (ask_confirm_delete)
confirm = _("Execute the following deletion query ?");
break;
default:
g_assert_not_reached ();
}
if (user_cancelled)
*user_cancelled = FALSE;
if (query_error)
*query_error = FALSE;
if (sql) {
if (confirm) {
GtkWidget *dlg;
gint result;
gchar *msg;
msg = g_strdup_printf (_("<b><big>%s</big></b>\n"
"<small>The preferences require a confirmation for the "
"following query</small>\n\n%s"), confirm, sql);
dlg = gtk_message_dialog_new (GTK_WINDOW (parent_window), 0,
GTK_MESSAGE_QUESTION,
GTK_BUTTONS_YES_NO, msg);
g_free (msg);
gtk_label_set_use_markup (GTK_LABEL (GTK_MESSAGE_DIALOG (dlg)->label), TRUE);
result = gtk_dialog_run (GTK_DIALOG (dlg));
gtk_widget_destroy (dlg);
do_execute = (result == GTK_RESPONSE_YES);
if (user_cancelled)
*user_cancelled = !do_execute;
}
if (do_execute) {
MgConf *conf = mg_base_get_conf (MG_BASE (query));
#ifdef debug
g_print ("MODIF SQL: %s\n", sql);
#endif
mg_server_do_query (mg_conf_get_server (conf), sql, MG_SERVER_QUERY_SQL, &error);
if (error) {
GtkWidget *dlg;
gchar *message;
message = g_strdup (error->message);
g_error_free (error);
dlg = gtk_message_dialog_new (GTK_WINDOW (parent_window), 0,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
message);
g_free (message);
gtk_dialog_run (GTK_DIALOG (dlg));
gtk_widget_destroy (dlg);
allok = FALSE;
if (query_error)
*query_error = TRUE;
}
}
else
allok = FALSE;
g_free (sql);
}
else {
GtkWidget *dlg;
gchar *message;
if (error) {
message = g_strdup_printf (_("The following error occurred while preparing the query:\n%s"),
error->message);
g_error_free (error);
}
else
message = g_strdup_printf (_("An unknown error occurred while preparing the query."));
dlg = gtk_message_dialog_new (GTK_WINDOW (parent_window), 0,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
message);
g_free (message);
gtk_dialog_run (GTK_DIALOG (dlg));
gtk_widget_destroy (dlg);
allok = FALSE;
if (query_error)
*query_error = TRUE;
}
return allok;
}
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