From: Alexis Laferrière <alexis.laf@xymus.net>
Date: Fri, 11 Mar 2016 18:50:47 +0000 (-0500)
Subject: lib/android: intro `app::native_context` and use in `dalvik`
X-Git-Url: http://nitlanguage.org?hp=78619d0fa5314334b6990885c56403d1d9aca161

lib/android: intro `app::native_context` and use in `dalvik`

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
---

diff --git a/lib/android/dalvik.nit b/lib/android/dalvik.nit
index dc335dc..486d140 100644
--- a/lib/android/dalvik.nit
+++ b/lib/android/dalvik.nit
@@ -20,8 +20,13 @@ module dalvik
 import activities
 
 redef class App
-	# The main Java Activity of this application
+	# Main Java Activity of this application
+	#
+	# Require: A Nit activity is currently running.
 	fun native_activity: NativeActivity is abstract
+
+	# Current reference context, either an activity or a service
+	fun native_context: NativeContext do return native_activity
 end
 
 extern class JavaClassLoader in "Java" `{java.lang.ClassLoader`}
@@ -43,7 +48,7 @@ redef class Sys
 	do
 		var class_loader = self.class_loader
 		if class_loader == null then
-			find_class_loader app.native_activity
+			find_class_loader app.native_context
 			class_loader = self.class_loader
 			assert class_loader != null
 		end
@@ -54,35 +59,35 @@ redef class Sys
 		return load_jclass_intern(class_loader, class_loader_method, name)
 	end
 
-	private fun find_class_loader(native_activity: NativeActivity) import jni_env, class_loader=, JavaObject.as nullable, class_loader_method=, JMethodID.as nullable `{
+	private fun find_class_loader(native_context: NativeContext) import jni_env, class_loader=, JavaObject.as nullable, class_loader_method=, JMethodID.as nullable `{
 		JNIEnv *env = Sys_jni_env(self);
 
 		// Retrieve main activity
-		jclass class_activity = (*env)->GetObjectClass(env, native_activity);
-		if (class_activity == NULL) {
-			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed retrieving activity class");
+		jclass class_context = (*env)->GetObjectClass(env, native_context);
+		if (class_context == NULL) {
+			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed to retrieve activity class");
 			(*env)->ExceptionDescribe(env);
 			exit(1);
 		}
 
-		jmethodID class_activity_getClassLoader = (*env)->GetMethodID(env, class_activity, "getClassLoader", "()Ljava/lang/ClassLoader;");
+		jmethodID class_activity_getClassLoader = (*env)->GetMethodID(env, class_context, "getClassLoader", "()Ljava/lang/ClassLoader;");
 		if (class_activity_getClassLoader == NULL) {
-			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed retrieving 'getClassLoader' method");
+			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed to retrieve 'getClassLoader' method");
 			(*env)->ExceptionDescribe(env);
 			exit(1);
 		}
 
 		// Call activity.getClassLoader
-		jobject instance_class_loader = (*env)->CallObjectMethod(env, native_activity, class_activity_getClassLoader);
+		jobject instance_class_loader = (*env)->CallObjectMethod(env, native_context, class_activity_getClassLoader);
 		if (instance_class_loader == NULL) {
-			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed retrieving class loader instance");
+			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed to retrieve class loader instance");
 			(*env)->ExceptionDescribe(env);
 			exit(1);
 		}
 
 		jclass class_class_loader = (*env)->GetObjectClass(env, instance_class_loader);
 		if (class_class_loader == NULL) {
-			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed retrieving class of class loader");
+			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed to retrieve class of class loader");
 			(*env)->ExceptionDescribe(env);
 			exit(1);
 		}
@@ -90,7 +95,7 @@ redef class Sys
 		// Get the method ClassLoader.findClass
 		jmethodID class_class_loader_findClass = (*env)->GetMethodID(env, class_class_loader, "findClass", "(Ljava/lang/String;)Ljava/lang/Class;");
 		if (class_class_loader_findClass == NULL) {
-			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed retrieving 'findClass' method");
+			__android_log_print(ANDROID_LOG_ERROR, "Nit", "Failed to retrieve 'findClass' method");
 			(*env)->ExceptionDescribe(env);
 			exit(1);
 		}
@@ -100,7 +105,7 @@ redef class Sys
 		Sys_class_loader_method__assign(self, JMethodID_as_nullable(class_class_loader_findClass));
 
 		// Clean up
-		(*env)->DeleteLocalRef(env, class_activity);
+		(*env)->DeleteLocalRef(env, class_context);
 		(*env)->DeleteLocalRef(env, instance_class_loader);
 		(*env)->DeleteLocalRef(env, class_class_loader);
 	`}