gnome-shell/src/shell-js.c

82 lines
2.5 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include "config.h"
#include "shell-js.h"
#include <jsapi.h>
#include <gio/gio.h>
#include <gjs/gjs.h>
#include <gjs/gjs-module.h>
/**
* shell_js_add_extension_importer:
* @target_object_script: JavaScript code evaluating to a target object
* @target_property: Name of property to use for importer
* @directory: Source directory:
* @error: A #GError
*
* This function sets a property named @target_property on the object
* resulting from the evaluation of @target_object_script code, which
* acts as a GJS importer for directory @directory.
*
* Returns: %TRUE on success
*/
gboolean
shell_js_add_extension_importer (const char *target_object_script,
const char *target_property,
const char *directory,
GError **error)
{
jsval target_object;
GList *contexts;
JSContext *context;
char *search_path[2] = { 0, 0 };
gboolean ret = FALSE;
/* Take the first GjsContext from all of them --
* we should only ever have one context, so this
* should be alright. */
contexts = gjs_context_get_all ();
context = gjs_context_get_native_context (contexts->data);
g_list_free_full (contexts, g_object_unref);
JS_BeginRequest (context);
/* This is a bit of a hack; ideally we'd be able to pass our target
* object directly into this function, but introspection doesn't
* support that at the moment. Instead evaluate a string to get it. */
if (!JS_EvaluateScript(context,
JS_GetGlobalObject(context),
target_object_script,
strlen (target_object_script),
"<target_object_script>",
0,
&target_object))
{
char *message;
gjs_log_exception(context,
&message);
g_set_error(error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"%s", message ? message : "(unknown)");
g_free(message);
goto out;
}
if (!JSVAL_IS_OBJECT (target_object))
{
g_error ("shell_js_add_extension_importer: invalid target object");
goto out;
}
search_path[0] = (char*)directory;
gjs_define_importer (context, JSVAL_TO_OBJECT (target_object), target_property, (const char **)search_path, FALSE);
ret = TRUE;
out:
JS_EndRequest (context);
return ret;
}