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-rw-r--r--indra/llcommon/commoncontrol.cpp104
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diff --git a/indra/llcommon/commoncontrol.cpp b/indra/llcommon/commoncontrol.cpp
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+/**
+ * @file commoncontrol.cpp
+ * @author Nat Goodspeed
+ * @date 2022-06-08
+ * @brief Implementation for commoncontrol.
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Copyright (c) 2022, Linden Research, Inc.
+ * $/LicenseInfo$
+ */
+
+// Precompiled header
+#include "linden_common.h"
+// associated header
+#include "commoncontrol.h"
+// STL headers
+// std headers
+// external library headers
+// other Linden headers
+#include "llevents.h"
+#include "llsdutil.h"
+
+LLSD LL::CommonControl::access(const LLSD& params)
+{
+ // We can't actually introduce a link-time dependency on llxml, or on any
+ // global LLControlGroup (*koff* gSavedSettings *koff*) but we can issue a
+ // runtime query. If we're running as part of a viewer with
+ // LLViewerControlListener, we can use that to interact with any
+ // instantiated LLControGroup.
+ LLSD response;
+ {
+ LLEventStream reply("reply");
+ LLTempBoundListener connection = reply.listen("listener",
+ [&response] (const LLSD& event)
+ {
+ response = event;
+ return false;
+ });
+ LLSD rparams{ params };
+ rparams["reply"] = reply.getName();
+ LLEventPumps::instance().obtain("LLViewerControl").post(rparams);
+ }
+ // LLViewerControlListener responds immediately. If it's listening at all,
+ // it will already have set response.
+ if (! response.isDefined())
+ {
+ LLTHROW(NoListener("No LLViewerControl listener instantiated"));
+ }
+ LLSD error{ response["error"] };
+ if (error.isDefined())
+ {
+ LLTHROW(ParamError(error));
+ }
+ return response;
+}
+
+/// set control group.key to defined default value
+LLSD LL::CommonControl::set_default(const std::string& group, const std::string& key)
+{
+ return access(llsd::map("op", "set",
+ "group", group, "key", key))["value"];
+}
+
+/// set control group.key to specified value
+LLSD LL::CommonControl::set(const std::string& group, const std::string& key, const LLSD& value)
+{
+ return access(llsd::map("op", "set",
+ "group", group, "key", key, "value", value))["value"];
+}
+
+/// toggle boolean control group.key
+LLSD LL::CommonControl::toggle(const std::string& group, const std::string& key)
+{
+ return access(llsd::map("op", "toggle",
+ "group", group, "key", key))["value"];
+}
+
+/// get the definition for control group.key, (! isDefined()) if bad
+/// ["name"], ["type"], ["value"], ["comment"]
+LLSD LL::CommonControl::get_def(const std::string& group, const std::string& key)
+{
+ return access(llsd::map("op", "get",
+ "group", group, "key", key));
+}
+
+/// get the value of control group.key
+LLSD LL::CommonControl::get(const std::string& group, const std::string& key)
+{
+ return access(llsd::map("op", "get",
+ "group", group, "key", key))["value"];
+}
+
+/// get defined groups
+std::vector<std::string> LL::CommonControl::get_groups()
+{
+ auto groups{ access(llsd::map("op", "groups"))["groups"] };
+ return { groups.beginArray(), groups.endArray() };
+}
+
+/// get definitions for all variables in group
+LLSD LL::CommonControl::get_vars(const std::string& group)
+{
+ return access(llsd::map("op", "vars", "group", group))["vars"];
+}