Add support for navigator.preference() and navigator.savePreferences()

It required that the 'context' session was saved in see_ses (similarly to
the lua_ses variable)

Anyway, now you can use

	var opt_value = navigator.preference("ui.window_title)
	navigator.preference("ui.window_title", false)
	navigator.savePreferences()

to get and set optinos + save the changes.

src/scripting/see/core.c

@@ -9,12 +9,16 @@
 #include "elinks.h"
 
 #include "bfu/dialog.h"
+#include "config/conf.h"
 #include "config/home.h"
+#include "config/options.h"
+#include "config/opttypes.h"
 #include "intl/gettext/libintl.h"
 #include "main/module.h"
 #include "scripting/scripting.h"
 #include "scripting/see/core.h"
 #include "scripting/see/see.h"
+#include "session/session.h"
 #include "util/error.h"
 #include "util/file.h"
 #include "util/string.h"
@@ -23,6 +27,7 @@
 #define SEE_HOOKS_FILENAME	"hooks.js"
 
 struct SEE_interpreter see_interpreter;
+struct session *see_ses;
 
 
 struct string *
@@ -52,29 +57,125 @@ alert_see_error(struct session *ses, unsigned char *msg)
 
 /* The ELinks module: */
 
+static void
+navigator_preference(struct SEE_interpreter *see, struct SEE_object *self,
+		     struct SEE_object *thisobj, int argc, struct SEE_value **argv,
+		     struct SEE_value *res)
+{
+        struct SEE_value v;
+	struct string opt_name;
+	struct option *opt;
+
+	SEE_SET_UNDEFINED(res);
+
+        if (argc != 1 && argc != 2) return;
+
+	SEE_ToString(see, argv[0], &v);
+	if (!convert_see_string(&opt_name, v.u.string))
+		return;
+
+	opt = get_opt_rec(config_options, opt_name.source);
+	done_string(&opt_name);
+	/* FIXME: Alert? */
+	if (!opt) return;
+
+	/* Set option */
+	switch (opt->type) {
+	case OPT_BOOL:
+	{
+		long value = opt->value.number;
+
+		if (argc == 1) {
+			SEE_SET_BOOLEAN(res, value);
+			return;
+		}
+
+		SEE_ToBoolean(see, argv[1], &v);
+		value = !!v.u.boolean;
+		opt->value.number = value;
+		break;
+	}
+	case OPT_INT:
+	case OPT_LONG:
+	{
+		long value;
+
+		if (argc == 1) {
+			SEE_SET_NUMBER(res, opt->value.number);
+			return;
+		}
+
+		SEE_ToInteger(see, argv[1], &v);
+		value = SEE_ToInt32(see, &v);
+		if (opt->min <= value && value <= opt->max)
+			option_types[opt->type].set(opt, (unsigned char *) (&value));
+		break;
+	}
+	case OPT_STRING:
+	case OPT_CODEPAGE:
+	case OPT_LANGUAGE:
+	case OPT_COLOR:
+	{
+		struct string opt_value;
+
+		if (argc == 1) {
+			SEE_SET_STRING(res, SEE_string_sprintf(see, opt->value.string));
+			return;
+		}
+
+		SEE_ToString(see, argv[1], &v);
+		if (!convert_see_string(&opt_value, v.u.string))
+			return;
+
+		option_types[opt->type].set(opt, opt_value.source);
+		done_string(&opt_value);
+		break;
+	}
+	default:
+		return;
+	}
+
+	if (argc == 2) {
+		opt->flags |= OPT_TOUCHED;
+		call_change_hooks(see_ses, opt, opt);
+	}
+}
+
+static void
+navigator_save_preferences(struct SEE_interpreter *see, struct SEE_object *self,
+			   struct SEE_object *thisobj, int argc, struct SEE_value **argv,
+			   struct SEE_value *res)
+{
+	if (see_ses)
+		write_config(see_ses->tab->term);
+}
+
 static void
 navigator_alert(struct SEE_interpreter *see, struct SEE_object *self,
 		 struct SEE_object *thisobj, int argc, struct SEE_value **argv,
 		 struct SEE_value *res)
 {
-        struct SEE_value v;
+	struct SEE_value v;
 	struct string string;
+	struct terminal *term;
 
-        SEE_SET_UNDEFINED(res);
+	SEE_SET_UNDEFINED(res);
 
-        if (!argc) return;
+	if (!argc) return;
 
 	SEE_ToString(see, argv[0], &v);
 	if (!convert_see_string(&string, v.u.string))
 		return;
 
-	if (list_empty(terminals)) {
+	if (!see_ses && list_empty(terminals)) {
 		usrerror("[SEE] %s", string.source);
 		done_string(&string);
 		return;
 	}
 
-	info_box(terminals.next, MSGBOX_NO_TEXT_INTL | MSGBOX_FREE_TEXT,
+	term = see_ses ? see_ses->tab->term : terminals.next;
+
+	info_box(term, MSGBOX_NO_TEXT_INTL | MSGBOX_FREE_TEXT,
 		 N_("SEE Message"), ALIGN_LEFT, string.source);
 }
 
@@ -124,12 +225,23 @@ init_see_environment(struct SEE_interpreter *see)
 	name = SEE_string_sprintf(see, "appHome");
 	SEE_OBJECT_PUT(see, navigator, name, &value, SEE_ATTR_READONLY);
 
-	/* Create a 'write' method and attach to the browser object. */
+	/* Create an 'alert' method and attach to the browser object. */
+	/* FIXME: The browser object and the Global object should be identical. */
 	name = SEE_string_sprintf(see, "alert");
 	obj = SEE_cfunction_make(see, navigator_alert, name, 1);
 	SEE_SET_OBJECT(&value, obj);
 	SEE_OBJECT_PUT(see, navigator, name, &value, 0);
 	SEE_OBJECT_PUT(see, see->Global, name, &value, 0);
+
+	name = SEE_string_sprintf(see, "preference");
+	obj = SEE_cfunction_make(see, navigator_preference, name, 1);
+	SEE_SET_OBJECT(&value, obj);
+	SEE_OBJECT_PUT(see, navigator, name, &value, 0);
+
+	name = SEE_string_sprintf(see, "savePreferences");
+	obj = SEE_cfunction_make(see, navigator_save_preferences, name, 1);
+	SEE_SET_OBJECT(&value, obj);
+	SEE_OBJECT_PUT(see, navigator, name, &value, 0);
 }
 
 static void

src/scripting/see/core.h

@@ -9,6 +9,7 @@ struct session;
 struct string;
 
 extern struct SEE_interpreter see_interpreter;
+extern struct session *see_ses;
 
 struct string *convert_see_string(struct string *string, struct SEE_string *source);
 void alert_see_error(struct session *ses, unsigned char *msg);

src/scripting/see/hooks.c

@@ -21,7 +21,8 @@
  * to do is explained in doc/events.txt */
 
 static struct SEE_value *
-call_see_hook(struct SEE_interpreter *see, unsigned char *name,
+call_see_hook(struct SEE_interpreter *see, struct session *ses,
+	      unsigned char *name,
 	      struct SEE_value *args[], int argc,
 	      struct SEE_value *result)
 {
@@ -36,6 +37,8 @@ call_see_hook(struct SEE_interpreter *see, unsigned char *name,
 	    || !SEE_OBJECT_HAS_CALL(hook.u.object))
 		return NULL;
 
+	see_ses = ses;
+
 	SEE_TRY(see, try_context) {
 		SEE_OBJECT_CALL(see, hook.u.object, NULL, argc, args, result);
 	}
@@ -52,18 +55,20 @@ call_see_hook(struct SEE_interpreter *see, unsigned char *name,
 
 			if (init_string(&error_msg)) {
 				convert_see_string(&error_msg, value.u.string);
-				alert_see_error(NULL, error_msg.source);
+				alert_see_error(ses, error_msg.source);
 				done_string(&error_msg);
 			}
 		}
 
 		if (SEE_CAUGHT(try_context2)) {
-			WDBG("exception thrown while printing exception");
+			alert_see_error(ses, "exception thrown while printing exception");
 		}
 
+		see_ses = NULL;
 		return NULL;
 	}
 
+	see_ses = NULL;
 	return result;
 }
 
@@ -80,6 +85,7 @@ script_hook_goto_url(va_list ap, void *data)
 	if (*url == NULL)
 		return EVENT_HOOK_STATUS_NEXT;
 
+	see_ses = ses;
 	SEE_SET_STRING(args[0], SEE_string_sprintf(see, "%s", *url));
 
 	if (!ses || !have_location(ses)) {
@@ -89,7 +95,7 @@ script_hook_goto_url(va_list ap, void *data)
 			       SEE_string_sprintf(see, "%s", struri(cur_loc(ses)->vs.uri)));
 	}
 
-	if (!call_see_hook(see, "goto_url", args, sizeof_array(args), &result))
+	if (!call_see_hook(see, ses, "goto_url", args, sizeof_array(args), &result))
 		return EVENT_HOOK_STATUS_NEXT;
 
 	switch (SEE_VALUE_GET_TYPE(&result)) {
@@ -120,14 +126,12 @@ script_hook_follow_url(va_list ap, void *data)
 	struct SEE_value args_[1], *args[1] = { &args_[0] };
 	struct SEE_value result;
 
-	evhook_use_params(url && ses);
-
 	if (*url == NULL)
 		return EVENT_HOOK_STATUS_NEXT;
 
 	SEE_SET_STRING(args[0], SEE_string_sprintf(see, "%s", *url));
 
-	if (!call_see_hook(see, "follow_url", args, sizeof_array(args), &result))
+	if (!call_see_hook(see, ses, "follow_url", args, sizeof_array(args), &result))
 		return EVENT_HOOK_STATUS_NEXT;
 
 	switch (SEE_VALUE_GET_TYPE(&result)) {
@@ -168,7 +172,7 @@ script_hook_pre_format_html(va_list ap, void *data)
 	SEE_SET_STRING(args[0], SEE_string_sprintf(see, "%s", url));
 	SEE_SET_STRING(args[1], SEE_string_sprintf(see, "%s", *html));
 
-	if (!call_see_hook(see, "pre_format_html", args, sizeof_array(args), &result))
+	if (!call_see_hook(see, ses, "pre_format_html", args, sizeof_array(args), &result))
 		return EVENT_HOOK_STATUS_NEXT;
 
 	switch (SEE_VALUE_GET_TYPE(&result)) {
@@ -209,7 +213,7 @@ script_hook_get_proxy(va_list ap, void *data)
 
 	SEE_SET_STRING(args[0], SEE_string_sprintf(see, "%s", url));
 
-	if (!call_see_hook(see, "get_proxy", args, sizeof_array(args), &result))
+	if (!call_see_hook(see, NULL, "get_proxy", args, sizeof_array(args), &result))
 		return EVENT_HOOK_STATUS_NEXT;
 
 	switch (SEE_VALUE_GET_TYPE(&result)) {
@@ -237,7 +241,7 @@ script_hook_quit(va_list ap, void *data)
 	struct SEE_interpreter *see = &see_interpreter;
 	struct SEE_value result;
 
-	call_see_hook(see, "quit", NULL, 0, &result);
+	call_see_hook(see, NULL, "quit", NULL, 0, &result);
 
 	return EVENT_HOOK_STATUS_NEXT;
 }