Java versions of BlimpContents[,Observer] and BlimpNavigationController

blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpNavigationControllerImpl.java

Index: blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpNavigationControllerImpl.java
diff --git a/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpNavigationControllerImpl.java b/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpNavigationControllerImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..a907ed95a72669b84b8f2cbe4a4947e47a9547cb
--- /dev/null
+++ b/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpNavigationControllerImpl.java
@@ -0,0 +1,54 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.blimp.core;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+import org.chromium.blimp.core_public.BlimpNavigationController;
+
+/**
+ * BlimpNavigationControllerImpl is a Java wrapper to allow communicating with the native
+ * BlimpNavigationControllerImpl object.
+ */
+@JNINamespace("blimp::client")
+public class BlimpNavigationControllerImpl implements BlimpNavigationController {
+    @CalledByNative
+    private static BlimpNavigationControllerImpl create(
+            long nativeBlimpNavigationControllerImplAndroid) {
+        return new BlimpNavigationControllerImpl(nativeBlimpNavigationControllerImplAndroid);
+    }
+
+    private long mNativeBlimpNavigationControllerImplAndroid;
+
+    private BlimpNavigationControllerImpl(long blimpNavigationControllerImplAndroid) {
+        mNativeBlimpNavigationControllerImplAndroid = blimpNavigationControllerImplAndroid;
+    }
+
+    @CalledByNative
+    private void clearNativePtr() {
+        mNativeBlimpNavigationControllerImplAndroid = 0;
+    }
+
+    @CalledByNative
+    private long getNativePtr() {
+        assert mNativeBlimpNavigationControllerImplAndroid != 0;
+        return mNativeBlimpNavigationControllerImplAndroid;
+    }
+
+    @Override
+    public void loadUrl(String url) {
+        if (mNativeBlimpNavigationControllerImplAndroid == 0) return;
+        nativeLoadURL(mNativeBlimpNavigationControllerImplAndroid, url);
+    }
+
+    @Override
+    public String getUrl() {
+        if (mNativeBlimpNavigationControllerImplAndroid == 0) return "";
+        return nativeGetURL(mNativeBlimpNavigationControllerImplAndroid);
+    }
+
+    private native void nativeLoadURL(long nativeBlimpNavigationControllerImplAndroid, String url);
+    private native String nativeGetURL(long nativeBlimpNavigationControllerImplAndroid);
+}