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/* vi:set et ai sw=2 sts=2 ts=2: */
/*-
* Copyright (c) 2006 Benedikt Meurer <benny@xfce.org>
* Copyright (c) 2009 Jannis Pohlmann <jannis@xfce.org>
*
* 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 Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_MEMORY_H
#include <memory.h>
#endif
#ifdef HAVE_STDARG_H
#include <stdarg.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include <gobject/gvaluecollector.h>
#include <thunar/thunar-job.h>
#include <thunar/thunar-private.h>
#include <thunar/thunar-simple-job.h>
static void thunar_simple_job_finalize (GObject *object);
static gboolean thunar_simple_job_execute (ExoJob *job,
GError **error);
struct _ThunarSimpleJobClass
{
ThunarJobClass __parent__;
};
struct _ThunarSimpleJob
{
ThunarJob __parent__;
ThunarSimpleJobFunc func;
GArray *param_values;
};
G_DEFINE_TYPE (ThunarSimpleJob, thunar_simple_job, THUNAR_TYPE_JOB)
static void
thunar_simple_job_class_init (ThunarSimpleJobClass *klass)
{
GObjectClass *gobject_class;
ExoJobClass *exojob_class;
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = thunar_simple_job_finalize;
exojob_class = EXO_JOB_CLASS (klass);
exojob_class->execute = thunar_simple_job_execute;
}
static void
thunar_simple_job_init (ThunarSimpleJob *simple_job)
{
}
static void
thunar_simple_job_finalize (GObject *object)
{
ThunarSimpleJob *simple_job = THUNAR_SIMPLE_JOB (object);
guint i;
/* release the param values */
for (i = 0; i < simple_job->param_values->len; i++)
g_value_unset (&g_array_index (simple_job->param_values, GValue, i));
g_array_free (simple_job->param_values, TRUE);
(*G_OBJECT_CLASS (thunar_simple_job_parent_class)->finalize) (object);
}
static gboolean
thunar_simple_job_execute (ExoJob *job,
GError **error)
{
ThunarSimpleJob *simple_job = THUNAR_SIMPLE_JOB (job);
gboolean success = TRUE;
GError *err = NULL;
_thunar_return_val_if_fail (THUNAR_IS_SIMPLE_JOB (job), FALSE);
_thunar_return_val_if_fail (simple_job->func != NULL, FALSE);
/* try to execute the job using the supplied function */
success = (*simple_job->func) (THUNAR_JOB (job), simple_job->param_values, &err);
if (!success)
{
g_assert (err != NULL || exo_job_is_cancelled (job));
/* set error if the job was cancelled. otherwise just propagate
* the results of the processing function */
if (exo_job_set_error_if_cancelled (job, error))
{
g_clear_error (&err);
}
else
{
if (err != NULL)
g_propagate_error (error, err);
}
return FALSE;
}
else
return TRUE;
}
/**
* thunar_simple_job_launch:
* @func : the #ThunarSimpleJobFunc to execute the job.
* @n_param_values : the number of parameters to pass to the @func.
* @... : a list of #GType and parameter pairs (exactly
* @n_param_values pairs) that are passed to @func.
*
* Allocates a new #ThunarSimpleJob, which executes the specified
* @func with the specified parameters.
*
* For example the listdir @func expects a #ThunarPath for the
* folder to list, so the call to thunar_simple_job_launch()
* would look like this:
*
* <informalexample><programlisting>
* thunar_simple_job_launch (_thunar_io_jobs_listdir, 1,
* THUNAR_TYPE_PATH, path);
* </programlisting></informalexample>
*
* The caller is responsible to release the returned object using
* thunar_job_unref() when no longer needed.
*
* Return value: the launched #ThunarJob.
**/
ThunarJob *
thunar_simple_job_launch (ThunarSimpleJobFunc func,
guint n_param_values,
...)
{
ThunarSimpleJob *simple_job;
va_list var_args;
GValue value = { 0, };
gchar *error_message;
guint n;
/* allocate and initialize the simple job */
simple_job = g_object_new (THUNAR_TYPE_SIMPLE_JOB, NULL);
simple_job->func = func;
simple_job->param_values = g_array_sized_new (FALSE, TRUE, sizeof (GValue), n_param_values);
/* collect the parameters */
va_start (var_args, n_param_values);
for (n = 0; n < n_param_values; ++n)
{
/* initialize the value to hold the next parameter */
g_value_init (&value, va_arg (var_args, GType));
/* collect the value from the stack */
G_VALUE_COLLECT (&value, var_args, 0, &error_message);
/* check if an error occurred */
if (G_UNLIKELY (error_message != NULL))
{
g_error ("%s: %s", G_STRLOC, error_message);
g_free (error_message);
}
g_array_insert_val (simple_job->param_values, n, value);
/* manually unset the value, g_value_unset doesn't work
* because we don't want to free the data */
memset (&value, 0, sizeof (GValue));
}
va_end (var_args);
/* launch the job */
return THUNAR_JOB (exo_job_launch (EXO_JOB (simple_job)));
}
GArray *
thunar_simple_job_get_param_values (ThunarSimpleJob *job)
{
_thunar_return_val_if_fail (THUNAR_IS_SIMPLE_JOB (job), NULL);
return job->param_values;
}
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