From f17d748c753f0ffa03d53369cc7aaf3288a5c1e7 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 10 Dec 2014 18:15:24 +0200
Subject: [PATCH] Add methods to query the state of a resource

---
 source/resource.cpp        | 5 +++++
 source/resource.h          | 1 +
 source/resourcemanager.cpp | 6 ++++++
 source/resourcemanager.h   | 1 +
 4 files changed, 13 insertions(+)

diff --git a/source/resource.cpp b/source/resource.cpp
index e63341c8..4be6ee26 100644
--- a/source/resource.cpp
+++ b/source/resource.cpp
@@ -28,5 +28,10 @@ void Resource::set_manager(ResourceManager *m)
 		manager_data = 0;
 }
 
+bool Resource::is_loaded() const
+{
+	return manager ? manager->is_resource_loaded(*this) : true;
+}
+
 } // namespace GL
 } // namespace Msp
diff --git a/source/resource.h b/source/resource.h
index 0ecba526..8d34c357 100644
--- a/source/resource.h
+++ b/source/resource.h
@@ -35,6 +35,7 @@ public:
 	ResourceManager *get_manager() const { return manager; }
 	void *get_manager_data() const { return manager_data; }
 	virtual AsyncLoader *load(IO::Seekable &) = 0;
+	virtual bool is_loaded() const;
 	virtual UInt64 get_data_size() const = 0;
 	virtual void unload() = 0;
 };
diff --git a/source/resourcemanager.cpp b/source/resourcemanager.cpp
index c6e3f357..6461c336 100644
--- a/source/resourcemanager.cpp
+++ b/source/resourcemanager.cpp
@@ -101,6 +101,12 @@ void ResourceManager::load_resource(Resource &r)
 	}
 }
 
+bool ResourceManager::is_resource_loaded(const Resource &r)
+{
+	ManagedResource *managed = reinterpret_cast<ManagedResource *>(r.get_manager_data());
+	return managed ? managed->state==ManagedResource::LOADED : false;
+}
+
 void ResourceManager::resource_used(const Resource &r)
 {
 	ManagedResource *managed = reinterpret_cast<ManagedResource *>(r.get_manager_data());
diff --git a/source/resourcemanager.h b/source/resourcemanager.h
index a2a4975d..e83a6132 100644
--- a/source/resourcemanager.h
+++ b/source/resourcemanager.h
@@ -127,6 +127,7 @@ public:
 	void *get_data_for_resource(const Resource &);
 	void set_resource_location(Resource &, DataFile::Collection &, const std::string &);
 	void load_resource(Resource &);
+	bool is_resource_loaded(const Resource &);
 	void resource_used(const Resource &);
 	void remove_resource(Resource &);
 
-- 
2.45.2