Add Java wrapper for RenderFrameHost

content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java

 // Copyright 2013 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.content.browser.webcontents;
 
 import android.annotation.SuppressLint;
 import android.graphics.Bitmap;
 import android.graphics.Rect;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
 import android.os.Parcel;
 import android.os.ParcelUuid;
 import android.os.Parcelable;
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.content.browser.AppWebMessagePort;
 import org.chromium.content.browser.MediaSessionImpl;
+import org.chromium.content.browser.framehost.RenderFrameHostDelegate;
+import org.chromium.content.browser.framehost.RenderFrameHostImpl;
 import org.chromium.content_public.browser.AccessibilitySnapshotCallback;
 import org.chromium.content_public.browser.AccessibilitySnapshotNode;
 import org.chromium.content_public.browser.ContentBitmapCallback;
 import org.chromium.content_public.browser.ImageDownloadCallback;
 import org.chromium.content_public.browser.JavaScriptCallback;
 import org.chromium.content_public.browser.MessagePort;
 import org.chromium.content_public.browser.NavigationController;
+import org.chromium.content_public.browser.RenderFrameHost;
 import org.chromium.content_public.browser.SmartClipCallback;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.content_public.browser.WebContentsObserver;
 import org.chromium.ui.OverscrollRefreshHandler;
 import org.chromium.ui.accessibility.AXTextStyle;
 import org.chromium.ui.base.WindowAndroid;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
 
 /**
  * The WebContentsImpl Java wrapper to allow communicating with the native WebContentsImpl
  * object.
  */
 @JNINamespace("content")
-//TODO(tedchoc): Remove the package restriction once this class moves to a non-public content
+// TODO(tedchoc): Remove the package restriction once this class moves to a non-public content
 //               package whose visibility will be enforced via DEPS.
-/* package */ class WebContentsImpl implements WebContents {
+/* package */ class WebContentsImpl implements WebContents, RenderFrameHostDelegate {
     private static final String PARCEL_VERSION_KEY = "version";
     private static final String PARCEL_WEBCONTENTS_KEY = "webcontents";
     private static final String PARCEL_PROCESS_GUARD_KEY = "processguard";
 
     private static final long PARCELABLE_VERSION_ID = 0;
     // Non-final for testing purposes, so resetting of the UUID can happen.
     private static UUID sParcelableUUID = UUID.randomUUID();
 
     /**
      * Used to reset the internal tracking for whether or not a serialized {@link WebContents}
@@ skipping 28 matching lines @@
                 }
 
                 @Override
                 public WebContents[] newArray(int size) {
                     return new WebContents[size];
                 }
             };
 
     private long mNativeWebContentsAndroid;
     private NavigationController mNavigationController;
+    private RenderFrameHost mMainFrame;
 
     // Lazily created proxy observer for handling all Java-based WebContentsObservers.
     private WebContentsObserverProxy mObserverProxy;
 
     // The media session for this WebContents. It is constructed by the native MediaSession and has
     // the same life time as native MediaSession.
     private MediaSessionImpl mMediaSession;
 
     private SmartClipCallback mSmartClipCallback;
 
@@ skipping 39 matching lines @@
     @CalledByNative
     private long getNativePointer() {
         return mNativeWebContentsAndroid;
     }
 
     @Override
     public WindowAndroid getTopLevelNativeWindow() {
         return nativeGetTopLevelNativeWindow(mNativeWebContentsAndroid);
     }
 
+    public static WebContents fromRenderFrameHost(RenderFrameHost rfh) {

[boliu, 2017/03/06 23:12:38]

nit: static methods at the top

[rwlbuis, 2017/03/07 19:44:56]

Done.

+        RenderFrameHostDelegate delegate = ((RenderFrameHostImpl) rfh).getRenderFrameHostDelegate();
+        if (delegate == null) {
+            return null;
+        }
+        return delegate.getAsWebContents();
+    }
+
     @Override
     public void destroy() {
         if (!ThreadUtils.runningOnUiThread()) {
             throw new IllegalStateException("Attempting to destroy WebContents on non-UI thread");
         }
         if (mNativeWebContentsAndroid != 0) nativeDestroyWebContents(mNativeWebContentsAndroid);
     }
 
     @Override
     public boolean isDestroyed() {
         return mNativeWebContentsAndroid == 0;
     }
 
     @Override
     public NavigationController getNavigationController() {
         return mNavigationController;
     }
 
     @Override
+    public RenderFrameHost getMainFrame() {
+        if (mMainFrame == null) {
+            mMainFrame = nativeGetMainFrame(mNativeWebContentsAndroid);
+        }
+        return mMainFrame;
+    }
+
+    @Override
     public String getTitle() {
         return nativeGetTitle(mNativeWebContentsAndroid);
     }
 
     @Override
     public String getVisibleUrl() {
         return nativeGetVisibleURL(mNativeWebContentsAndroid);
     }
 
     @Override
@@ skipping 366 matching lines @@
     @CalledByNative
     private static List<Rect> createSizeList() {
         return new ArrayList<Rect>();
     }
 
     @CalledByNative
     private static void createSizeAndAddToList(List<Rect> sizes, int width, int height) {
         sizes.add(new Rect(0, 0, width, height));
     }
 
+    @Override
+    public WebContents getAsWebContents() {
+        return this;
+    }
+
     // This is static to avoid exposing a public destroy method on the native side of this class.
     private static native void nativeDestroyWebContents(long webContentsAndroidPtr);
 
     private static native WebContents nativeFromNativePtr(long webContentsAndroidPtr);
 
     private native WindowAndroid nativeGetTopLevelNativeWindow(long nativeWebContentsAndroid);
+    private native RenderFrameHost nativeGetMainFrame(long nativeWebContentsAndroid);
     private native String nativeGetTitle(long nativeWebContentsAndroid);
     private native String nativeGetVisibleURL(long nativeWebContentsAndroid);
     private native boolean nativeIsLoading(long nativeWebContentsAndroid);
     private native boolean nativeIsLoadingToDifferentDocument(long nativeWebContentsAndroid);
     private native void nativeStop(long nativeWebContentsAndroid);
     private native void nativeCut(long nativeWebContentsAndroid);
     private native void nativeCopy(long nativeWebContentsAndroid);
     private native void nativePaste(long nativeWebContentsAndroid);
     private native void nativeReplace(long nativeWebContentsAndroid, String word);
     private native void nativeSelectAll(long nativeWebContentsAndroid);
@@ skipping 40 matching lines @@
             ContentBitmapCallback callback, Bitmap.Config config, float scale,
             float x, float y, float width, float height);
     private native void nativeReloadLoFiImages(long nativeWebContentsAndroid);
     private native int nativeDownloadImage(long nativeWebContentsAndroid,
             String url, boolean isFavicon, int maxBitmapSize,
             boolean bypassCache, ImageDownloadCallback callback);
     private native void nativeDismissTextHandles(long nativeWebContentsAndroid);
     private native void nativeSetHasPersistentVideo(long nativeWebContentsAndroid, boolean value);
     private native boolean nativeHasActiveEffectivelyFullscreenVideo(long nativeWebContentsAndroid);
 }