Add terminal-based steering interface via an extract

src/libs/ascent/CMakeLists.txt

@@ -164,6 +164,7 @@ set(ascent_headers
     runtimes/flow_filters/ascent_runtime_trigger_filters.hpp
     runtimes/flow_filters/ascent_runtime_query_filters.hpp
     runtimes/flow_filters/ascent_runtime_command_filters.hpp
+    runtimes/flow_filters/ascent_runtime_steering_filters.hpp
     runtimes/flow_filters/ascent_runtime_vtkh_utils.hpp
     runtimes/flow_filters/ascent_runtime_utils.hpp
     # utils
@@ -230,6 +231,7 @@ set(ascent_sources
     runtimes/flow_filters/ascent_runtime_trigger_filters.cpp
     runtimes/flow_filters/ascent_runtime_query_filters.cpp
     runtimes/flow_filters/ascent_runtime_command_filters.cpp
+    runtimes/flow_filters/ascent_runtime_steering_filters.cpp
     runtimes/flow_filters/ascent_runtime_utils.cpp
     # utils
     utils/ascent_actions_utils.cpp

src/libs/ascent/ascent.cpp

@@ -928,6 +928,28 @@ execute_callback(std::string callback_name)
     return callback_function();
 }
 
+//-----------------------------------------------------------------------------
+std::vector<std::string>
+get_void_callbacks()
+{
+    std::vector<std::string> keys;
+    for (const auto &pair : m_void_callback_map) {
+        keys.push_back(pair.first);
+    }
+    return keys;
+}
+
+//-----------------------------------------------------------------------------
+std::vector<std::string>
+get_bool_callbacks()
+{
+    std::vector<std::string> keys;
+    for (const auto &pair : m_bool_callback_map) {
+        keys.push_back(pair.first);
+    }
+    return keys;
+}
+
 //-----------------------------------------------------------------------------
 void
 reset_callbacks()

src/libs/ascent/ascent.hpp

@@ -87,6 +87,14 @@ void        ASCENT_API execute_callback(std::string callback_name,
 //-----------------------------------------------------------------------------
 bool        ASCENT_API execute_callback(std::string callback_name);
 
+//-----------------------------------------------------------------------------
+std::vector<std::string>
+            ASCENT_API get_void_callbacks();
+
+//-----------------------------------------------------------------------------
+std::vector<std::string>
+            ASCENT_API get_bool_callbacks();
+
 //-----------------------------------------------------------------------------
 void        ASCENT_API reset_callbacks();
 

src/libs/ascent/runtimes/ascent_main_runtime.cpp

@@ -1077,6 +1077,10 @@ AscentRuntime::ConvertExtractToFlow(const conduit::Node &extract,
     py_src_final << "jupyter_bridge()" << std::endl;
     params["source"] = py_src_final.str();
   }
+  else if(extract_type == "steering")
+  {
+     filter_name = "steering";
+  }
   // generic extract support
   else if(n_extracts.has_child(extract_type))
   {

src/libs/ascent/runtimes/flow_filters/ascent_runtime_filters.cpp

@@ -26,6 +26,7 @@
 #include <ascent_runtime_trigger_filters.hpp>
 #include <ascent_runtime_query_filters.hpp>
 #include <ascent_runtime_command_filters.hpp>
+#include <ascent_runtime_steering_filters.hpp>
 
 #if defined(ASCENT_VTKM_ENABLED)
     #include <ascent_runtime_vtkh_filters.hpp>
@@ -99,6 +100,7 @@ register_builtin()
     AscentRuntime::register_filter_type<BasicQuery>();
     AscentRuntime::register_filter_type<FilterQuery>("transforms","expression");
     AscentRuntime::register_filter_type<Command>();
+    AscentRuntime::register_filter_type<Steering>("extracts");
     AscentRuntime::register_filter_type<DataBinning>("transforms","binning");
     AscentRuntime::register_filter_type<BlueprintPartition>("transforms","partition");
     AscentRuntime::register_filter_type<AddFields>("transforms","add_fields");