gplugin/gplugin

Implement enable switch in GTK4 viewer

2021-12-16, Elliott Sales de Andrade
f03eee6f9596
Implement enable switch in GTK4 viewer

This adds a `state-set` signal on the plugin row, which merely re-broadcasts the signal from the switch. This enables the view to watch for the signal and pass along the desired state to the manager.

The plugin row sets the display of the enable switch whenever the plugin state refreshes. I'm not entirely sure if all states are displayed in the way we want.

Testing Done:
Start viewer and see that auto-loaded plugins are actually enabled, and that others can be enabled/disabled.

Reviewed at https://reviews.imfreedom.org/r/1193/
/*
* Copyright (C) 2011-2020 Gary Kramlich <grim@reaperworld.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <https://www.gnu.org/licenses/>.
*/
#include "gplugin-tcc-loader.h"
#include <glib/gi18n-lib.h>
#include <libtcc.h>
#include "gplugin-tcc-plugin.h"
struct _GPluginTccLoader {
GPluginLoader parent;
};
G_DEFINE_DYNAMIC_TYPE(
GPluginTccLoader,
gplugin_tcc_loader,
GPLUGIN_TYPE_LOADER);
/******************************************************************************
* GPluginLoaderInterface API
*****************************************************************************/
static GSList *
gplugin_tcc_loader_supported_extensions(G_GNUC_UNUSED GPluginLoader *l)
{
return g_slist_append(NULL, "c");
}
static GPluginPlugin *
gplugin_tcc_loader_query(
GPluginLoader *loader,
const gchar *filename,
GError **error)
{
GPluginPlugin *plugin = NULL;
GPluginPluginInfo *info = NULL;
TCCState *s = NULL;
gpointer memneeded = NULL;
int memsize = -1;
GPluginTccPluginQueryFunc gplugin_query = NULL;
s = tcc_new();
tcc_set_output_type(s, TCC_OUTPUT_MEMORY);
if(tcc_add_file(s, filename) == -1) {
g_set_error(
error,
GPLUGIN_DOMAIN,
0,
"couldn't load file %s",
filename);
tcc_delete(s);
return NULL;
}
/* copy code into memory */
if((memsize = tcc_relocate(s, NULL)) < 0) {
g_set_error(
error,
GPLUGIN_DOMAIN,
0,
"couldn't work out how much memory is needed");
tcc_delete(s);
return NULL;
}
memneeded = g_malloc0(memsize);
if(tcc_relocate(s, memneeded) < 0) {
g_set_error(
error,
GPLUGIN_DOMAIN,
0,
"could not relocate plugin into memory");
tcc_delete(s);
g_free(memneeded);
return NULL;
}
gplugin_query =
(GPluginTccPluginQueryFunc)tcc_get_symbol(s, "gplugin_query");
if(gplugin_query == NULL) {
g_set_error(
error,
GPLUGIN_DOMAIN,
0,
"no gplugin_query function found");
tcc_delete(s);
g_free(memneeded);
return NULL;
}
info = gplugin_query(error);
if(info == NULL) {
tcc_delete(s);
g_free(memneeded);
return NULL;
}
/* clang-format off */
plugin = g_object_new(
GPLUGIN_TCC_TYPE_PLUGIN,
"filename", filename,
"loader", loader,
"state", s,
"memory", memneeded,
"info", info,
NULL);
/* clang-format on */
return plugin;
}
static gboolean
gplugin_tcc_loader_load(
G_GNUC_UNUSED GPluginLoader *loader,
GPluginPlugin *plugin,
GError **error)
{
GPluginTccPluginLoadFunc gplugin_load = NULL;
TCCState *s = gplugin_tcc_plugin_get_state(GPLUGIN_TCC_PLUGIN(plugin));
gplugin_load = (GPluginTccPluginLoadFunc)tcc_get_symbol(s, "gplugin_load");
if(gplugin_load == NULL) {
g_set_error(error, GPLUGIN_DOMAIN, 0, "no gplugin_load function found");
return FALSE;
}
return gplugin_load(GPLUGIN_NATIVE_PLUGIN(plugin), error);
}
static gboolean
gplugin_tcc_loader_unload(
G_GNUC_UNUSED GPluginLoader *loader,
GPluginPlugin *plugin,
GError **error)
{
GPluginTccPluginLoadFunc gplugin_unload = NULL;
TCCState *s = gplugin_tcc_plugin_get_state(GPLUGIN_TCC_PLUGIN(plugin));
gplugin_unload =
(GPluginTccPluginUnloadFunc)tcc_get_symbol(s, "gplugin_unload");
if(gplugin_unload == NULL) {
g_set_error(
error,
GPLUGIN_DOMAIN,
0,
"no gplugin_unload function found");
return FALSE;
}
return gplugin_unload(GPLUGIN_NATIVE_PLUGIN(plugin), error);
}
/******************************************************************************
* GObject Stuff
*****************************************************************************/
static void
gplugin_tcc_loader_init(G_GNUC_UNUSED GPluginTccLoader *loader)
{
}
static void
gplugin_tcc_loader_class_finalize(G_GNUC_UNUSED GPluginTccLoaderClass *klass)
{
}
static void
gplugin_tcc_loader_class_init(GPluginTccLoaderClass *klass)
{
GPluginLoaderClass *loader_class = GPLUGIN_LOADER_CLASS(klass);
loader_class->supported_extensions =
gplugin_tcc_loader_supported_extensions;
loader_class->query = gplugin_tcc_loader_query;
loader_class->load = gplugin_tcc_loader_load;
loader_class->unload = gplugin_tcc_loader_unload;
}
/******************************************************************************
* API
*****************************************************************************/
void
gplugin_tcc_loader_register(GPluginNativePlugin *plugin)
{
gplugin_tcc_loader_register_type(G_TYPE_MODULE(plugin));
}
GPluginLoader *
gplugin_tcc_loader_new(void)
{
/* clang-format off */
return GPLUGIN_LOADER(g_object_new(
GPLUGIN_TCC_TYPE_LOADER,
"id", "gplugin-tcc",
NULL));
/* clang-format on */
}