[core] Introduce usage tag for resources

Make the distinction if a resource is being requested for offline
usage or if it will be used immediately.

Fixes #14746

1 files changed, 7 insertions, 0 deletions

diff --git a/include/mbgl/storage/resource.hpp b/include/mbgl/storage/resource.hpp
index 97b9fbcaf0..d828877e10 100644
--- a/include/mbgl/storage/resource.hpp
+++ b/include/mbgl/storage/resource.hpp
@@ -29,6 +29,11 @@ public:
         Low
     };
 
+    enum class Usage : bool {
+        Online,
+        Offline
+    };
+
     struct TileData {
         std::string urlTemplate;
         uint8_t pixelRatio;
@@ -60,6 +65,7 @@ public:
     }
 
     void setPriority(Priority p) { priority = p; }
+    void setUsage(Usage u) { usage = u; }
 
     bool hasLoadingMethod(LoadingMethod method);
 
@@ -83,6 +89,7 @@ public:
 
     Kind kind;
     LoadingMethod loadingMethod;
+    Usage usage{ Usage::Online };
     Priority priority;
     std::string url;