topTab params

android/app/src/main/java/com/reactnativenavigation/layouts/ScreenFactory.java

@@ -0,0 +1,15 @@
+package com.reactnativenavigation.layouts;
+
+import android.content.Context;
+
+import com.reactnativenavigation.params.ScreenParams;
+
+public class ScreenFactory {
+    public static Screen create(Context context, ScreenParams screenParams) {
+        if (screenParams.hasTopTabs()) {
+            throw new UnsupportedOperationException("Rotem do your magic here");
+        } else {
+            return new SingleScreen(context, screenParams);
+        }
+    }
+}

android/app/src/main/java/com/reactnativenavigation/layouts/ScreenStack.java

@@ -31,7 +31,7 @@ public class ScreenStack extends FrameLayout {
     }
 
     private void addScreen(ScreenParams screenParams) {
-        Screen screen = new SingleScreen(getContext(), screenParams);
+        Screen screen = ScreenFactory.create(getContext(), screenParams);
         addView(screen, new FrameLayout.LayoutParams(MATCH_PARENT, MATCH_PARENT));
         stack.push(screen);
     }

android/app/src/main/java/com/reactnativenavigation/params/ScreenParams.java

@@ -13,6 +13,11 @@ public class ScreenParams {
     public String title;
     public ScreenStyleParams styleParams;
     public Bundle navigationParams;
+    public List<TopTabParams> topTabParams;
     //    public String tabLabel; TODO when tabs are supported move to TabParams
     //    public Drawable tabIcon;
+
+    public boolean hasTopTabs() {
+        return topTabParams != null && !topTabParams.isEmpty();
+    }
 }

android/app/src/main/java/com/reactnativenavigation/params/TopTabParams.java

@@ -0,0 +1,10 @@
+package com.reactnativenavigation.params;
+
+import android.os.Bundle;
+
+public class TopTabParams {
+    public String screenId;
+    public String title;
+    public String screenInstanceId;
+    public Bundle passProps;
+}

android/app/src/main/java/com/reactnativenavigation/params/parsers/ScreenParamsParser.java

@@ -13,6 +13,7 @@ public class ScreenParamsParser extends Parser {
     private static final String KEY_NAVIGATION_PARAMS = "navigationParams";
     private static final String KEY_BUTTONS = "titleBarButtons";
     private static final String STYLE_PARAMS = "styleParams";
+    public static final String TOP_TABS = "topTabs";
 
     @SuppressWarnings("ConstantConditions")
     public static ScreenParams parse(Bundle params) {
@@ -26,6 +27,9 @@ public class ScreenParamsParser extends Parser {
         result.buttons = TitleBarButtonParamsParser.parse(params.getBundle(KEY_BUTTONS));
         result.title = params.getString(KEY_TITLE);
         result.styleParams = ScreenStyleParamsParser.parse(params.getBundle(STYLE_PARAMS));
+        if (hasKey(params, TOP_TABS)) {
+            result.topTabParams = TopTabParamsParser.parse(params.getBundle(TOP_TABS));
+        }
         return result;
     }
 }

android/app/src/main/java/com/reactnativenavigation/params/parsers/TopTabParamsParser.java

@@ -0,0 +1,35 @@
+package com.reactnativenavigation.params.parsers;
+
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+
+import com.reactnativenavigation.params.TopTabParams;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TopTabParamsParser extends Parser {
+    private static final String KEY_SCREEN_ID = "screenId";
+    private static final String KEY_SCREEN_INSTANCE_ID = "screenInstanceID";
+    private static final String KEY_TITLE = "title";
+    private static final String KEY_PROPS = "passProps";
+
+    @SuppressWarnings("ConstantConditions")
+    public static List<TopTabParams> parse(Bundle params) {
+        List<TopTabParams> result = new ArrayList<>();
+        for (String key : params.keySet()) {
+            result.add(parseItem(params.getBundle(key)));
+        }
+        return result;
+    }
+
+    @NonNull
+    private static TopTabParams parseItem(Bundle params) {
+        TopTabParams result = new TopTabParams();
+        result.screenId = params.getString(KEY_SCREEN_ID);
+        result.screenInstanceId = params.getString(KEY_SCREEN_INSTANCE_ID);
+        result.title = params.getString(KEY_TITLE);
+        result.passProps = params.getBundle(KEY_PROPS);
+        return result;
+    }
+}