Move Native Extensions from JSContext layer to ContextFactory

Reviewed By: michalgr

Differential Revision: D8057886

fbshipit-source-id: 45a63d909169c9a40414de9cd54bdb411f9f595d

Author: Dmitry Zakharov

Diff for: ReactAndroid/src/main/java/com/facebook/react/modules/deviceinfo/DeviceInfoModule.java

@@ -13,24 +13,23 @@
 import java.util.Map;
 
 import android.content.Context;
-import android.util.DisplayMetrics;
 
-import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.BaseJavaModule;
 import com.facebook.react.bridge.LifecycleEventListener;
 import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.WritableMap;
 import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.react.modules.core.DeviceEventManagerModule;
 import com.facebook.react.uimanager.DisplayMetricsHolder;
 
 /**
  * Module that exposes Android Constants to JS.
  */
-@ReactModule(name = "DeviceInfo")
+@ReactModule(name = DeviceInfoModule.sModuleName)
 public class DeviceInfoModule extends BaseJavaModule implements
     LifecycleEventListener {
 
+  static final String sModuleName = "DeviceInfo";
+
   private @Nullable ReactApplicationContext mReactApplicationContext;
   private float mFontScale;
 
@@ -48,7 +47,7 @@ public DeviceInfoModule(Context context) {
 
   @Override
   public String getName() {
-    return "DeviceInfo";
+    return sModuleName;
   }
 
   @Override
@@ -88,6 +87,6 @@ public void emitUpdateDimensionsEvent() {
 
     mReactApplicationContext
         .getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
-        .emit("didUpdateDimensions", DisplayMetricsHolder.getDisplayMetricsMap(mFontScale));
+        .emit("didUpdateDimensions", DisplayMetricsHolder.getDisplayMetricsNativeMap(mFontScale));
   }
 }

Diff for: ReactAndroid/src/main/java/com/facebook/react/uimanager/DisplayMetricsHolder.java

@@ -11,6 +11,8 @@
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.Map;
 
 import android.content.Context;
 import android.os.Build;
@@ -104,18 +106,37 @@ public static DisplayMetrics getScreenDisplayMetrics() {
     return sScreenDisplayMetrics;
   }
 
-  public static WritableNativeMap getDisplayMetricsMap(double fontScale) {
+  public static Map<String, Map<String, Object>> getDisplayMetricsMap(double fontScale) {
+    Assertions.assertNotNull(
+        sWindowDisplayMetrics != null || sScreenDisplayMetrics != null,
+        "DisplayMetricsHolder must be initialized with initDisplayMetricsIfNotInitialized or initDisplayMetrics");
+    final Map<String, Map<String, Object>> result = new HashMap<>();
+    result.put("windowPhysicalPixels", getPhysicalPixelsMap(sWindowDisplayMetrics, fontScale));
+    result.put("screenPhysicalPixels", getPhysicalPixelsMap(sScreenDisplayMetrics, fontScale));
+    return result;
+  }
+
+  public static WritableNativeMap getDisplayMetricsNativeMap(double fontScale) {
     Assertions.assertNotNull(
         sWindowDisplayMetrics != null || sScreenDisplayMetrics != null,
         "DisplayMetricsHolder must be initialized with initDisplayMetricsIfNotInitialized or initDisplayMetrics");
     final WritableNativeMap result = new WritableNativeMap();
-    result.putMap("windowPhysicalPixels", getPhysicalPixelsMap(sWindowDisplayMetrics, fontScale));
-    result.putMap("screenPhysicalPixels", getPhysicalPixelsMap(sScreenDisplayMetrics, fontScale));
+    result.putMap("windowPhysicalPixels", getPhysicalPixelsNativeMap(sWindowDisplayMetrics, fontScale));
+    result.putMap("screenPhysicalPixels", getPhysicalPixelsNativeMap(sScreenDisplayMetrics, fontScale));
+    return result;
+  }
 
+  private static Map<String, Object> getPhysicalPixelsMap(DisplayMetrics displayMetrics, double fontScale) {
+    final Map<String, Object> result = new HashMap<>();
+    result.put("width", displayMetrics.widthPixels);
+    result.put("height", displayMetrics.heightPixels);
+    result.put("scale", displayMetrics.density);
+    result.put("fontScale", fontScale);
+    result.put("densityDpi", displayMetrics.densityDpi);
     return result;
   }
 
-  private static WritableNativeMap getPhysicalPixelsMap(DisplayMetrics displayMetrics, double fontScale) {
+  private static WritableNativeMap getPhysicalPixelsNativeMap(DisplayMetrics displayMetrics, double fontScale) {
     final WritableNativeMap result = new WritableNativeMap();
     result.putInt("width", displayMetrics.widthPixels);
     result.putInt("height", displayMetrics.heightPixels);
@@ -124,5 +145,4 @@ private static WritableNativeMap getPhysicalPixelsMap(DisplayMetrics displayMetr
     result.putDouble("densityDpi", displayMetrics.densityDpi);
     return result;
   }
-
 }