layout: add surface id to layer mapping

Signed-off-by: Marcus Fritzsch <marcus_fritzsch@mentor.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/src/layout.cpp b/src/layout.cpp
index 749b554..6a77cda 100644
--- a/src/layout.cpp
+++ b/src/layout.cpp
@@ -2,10 +2,46 @@
 // Created by mfritzsc on 6/27/17.
 //
 
+#include "json_helper.hpp"
 #include "layout.hpp"
 
 namespace wm {
 
+surface_id_to_layer::surface_id_to_layer(nlohmann::json const &j) {
+   DB(j);
+   if (j["type"] == "range") {
+      this->id_min = get<int>(j["first_surface_id"]);
+      this->id_max = get<int>(j["last_surface_id"]);
+   } else {
+      this->id_min = this->id_max = get<int>(j["surface_id"]);
+   }
+   this->name = j["name"].get<std::string>();
+   this->layer_id = get<int>(j["layer_id"]);
+}
 
+struct result<struct surface_id_to_layer_map> to_surface_id_to_layer_map(
+   nlohmann::json const &j) {
+   DB(j);
+   try {
+      surface_id_to_layer_map stl{};
+      std::transform(
+         std::cbegin(j), std::cend(j),
+         std::inserter(stl.mapping, stl.mapping.end()),
+         [](nlohmann::json const &j) { return surface_id_to_layer(j); });
+      for (auto i : stl.mapping) {
+         if (i.name.empty()) {
+            return Err<struct surface_id_to_layer_map>(
+               "Found mapping w/o name");
+         }
+         if (i.layer_id == -1 || i.id_min == -1 || i.id_max == -1) {
+            return Err<struct surface_id_to_layer_map>(
+               "Found invalid/unset IDs in mapping");
+         }
+      }
+      return Ok(stl);
+   } catch (std::exception &e) {
+      return Err<struct surface_id_to_layer_map>(e.what());
+   }
+}
 
 }  // namespace wm
\ No newline at end of file