Restructuring WebContents functions from ContentViewCore to WebContents.

In this patch we are trying to position the WebContents functionalities to web_contents_android
file from ContentViewCoreImpl to make it functionally readable. Ensuring there is a one-to-one
mapping between WebContents Java and native counterparts.

BUG=398263

Review URL: https://codereview.chromium.org/464393002

Cr-Commit-Position: refs/heads/master@{#289796}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289796 0039d316-1c4b-4281-b951-d872f2087c98

android_webview/java/src/org/chromium/android_webview/AwContents.java

@@ -56,6 +56,7 @@
 import org.chromium.content.common.CleanupReference;
 import org.chromium.content_public.Referrer;
 import org.chromium.content_public.browser.GestureStateListener;
+import org.chromium.content_public.browser.JavaScriptCallback;
 import org.chromium.ui.base.ActivityWindowAndroid;
 import org.chromium.ui.base.WindowAndroid;
 import org.chromium.ui.gfx.DeviceDisplayInfo;
@@ -1676,12 +1677,12 @@ public void preauthorizePermission(Uri origin, long resources) {
     }
 
     /**
-     * @see ContentViewCore.evaluateJavaScript(String, ContentViewCore.JavaScriptCallback)
+     * @see ContentViewCore.evaluateJavaScript(String, JavaScriptCallback)
      */
     public void evaluateJavaScript(String script, final ValueCallback<String> callback) {
-        ContentViewCore.JavaScriptCallback jsCallback = null;
+        JavaScriptCallback jsCallback = null;
         if (callback != null) {
-            jsCallback = new ContentViewCore.JavaScriptCallback() {
+            jsCallback = new JavaScriptCallback() {
                 @Override
                 public void handleJavaScriptResult(String jsonResult) {
                     callback.onReceiveValue(jsonResult);

content/browser/android/content_view_core_impl.cc

@@ -9,7 +9,6 @@
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/command_line.h"
-#include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
@@ -67,7 +66,6 @@ using base::android::ConvertJavaStringToUTF16;
 using base::android::ConvertJavaStringToUTF8;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::ConvertUTF8ToJavaString;
-using base::android::ScopedJavaGlobalRef;
 using base::android::ScopedJavaLocalRef;
 using blink::WebGestureEvent;
 using blink::WebInputEvent;
@@ -1309,53 +1307,6 @@ long ContentViewCoreImpl::GetNativeImeAdapter(JNIEnv* env, jobject obj) {
   return rwhva->GetNativeImeAdapter();
 }
 
-namespace {
-void JavaScriptResultCallback(const ScopedJavaGlobalRef<jobject>& callback,
-                              const base::Value* result) {
-  JNIEnv* env = base::android::AttachCurrentThread();
-  std::string json;
-  base::JSONWriter::Write(result, &json);
-  ScopedJavaLocalRef<jstring> j_json = ConvertUTF8ToJavaString(env, json);
-  Java_ContentViewCore_onEvaluateJavaScriptResult(env,
-                                                  j_json.obj(),
-                                                  callback.obj());
-}
-}  // namespace
-
-void ContentViewCoreImpl::EvaluateJavaScript(JNIEnv* env,
-                                             jobject obj,
-                                             jstring script,
-                                             jobject callback,
-                                             jboolean start_renderer) {
-  RenderViewHost* rvh = web_contents_->GetRenderViewHost();
-  DCHECK(rvh);
-
-  if (start_renderer && !rvh->IsRenderViewLive()) {
-    if (!web_contents_->CreateRenderViewForInitialEmptyDocument()) {
-      LOG(ERROR) << "Failed to create RenderView in EvaluateJavaScript";
-      return;
-    }
-  }
-
-  if (!callback) {
-    // No callback requested.
-    web_contents_->GetMainFrame()->ExecuteJavaScript(
-        ConvertJavaStringToUTF16(env, script));
-    return;
-  }
-
-  // Secure the Java callback in a scoped object and give ownership of it to the
-  // base::Callback.
-  ScopedJavaGlobalRef<jobject> j_callback;
-  j_callback.Reset(env, callback);
-  content::RenderFrameHost::JavaScriptResultCallback c_callback =
-      base::Bind(&JavaScriptResultCallback, j_callback);
-
-  web_contents_->GetMainFrame()->ExecuteJavaScript(
-      ConvertJavaStringToUTF16(env, script),
-      c_callback);
-}
-
 // TODO(sgurun) add support for posting a frame whose name is known (only
 //               main frame is supported at this time, see crbug.com/389721)
 // TODO(sgurun) add support for passing message ports

content/browser/android/content_view_core_impl.h

@@ -159,11 +159,6 @@ class ContentViewCoreImpl : public ContentViewCore,
                                        jboolean enabled);
 
   void ClearHistory(JNIEnv* env, jobject obj);
-  void EvaluateJavaScript(JNIEnv* env,
-                          jobject obj,
-                          jstring script,
-                          jobject callback,
-                          jboolean start_renderer);
   void PostMessageToFrame(JNIEnv* env, jobject obj, jstring frame_id,
       jstring message, jstring source_origin, jstring target_origin);
   long GetNativeImeAdapter(JNIEnv* env, jobject obj);

content/browser/web_contents/web_contents_android.cc

@@ -7,6 +7,7 @@
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/command_line.h"
+#include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "content/browser/android/interstitial_page_delegate_android.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
@@ -24,7 +25,23 @@
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF8;
+using base::android::ConvertJavaStringToUTF16;
 using base::android::ConvertUTF8ToJavaString;
+using base::android::ScopedJavaGlobalRef;
+
+namespace {
+
+void JavaScriptResultCallback(const ScopedJavaGlobalRef<jobject>& callback,
+                              const base::Value* result) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  std::string json;
+  base::JSONWriter::Write(result, &json);
+  ScopedJavaLocalRef<jstring> j_json = ConvertUTF8ToJavaString(env, json);
+  content::Java_WebContentsImpl_onEvaluateJavaScriptResult(
+      env, j_json.obj(), callback.obj());
+}
+
+}  // namespace
 
 namespace content {
 
@@ -307,4 +324,38 @@ void WebContentsAndroid::DidStartNavigationTransitionForFrame(int64 frame_id) {
       env, obj_.obj(), frame_id);
 }
 
+void WebContentsAndroid::EvaluateJavaScript(JNIEnv* env,
+                                            jobject obj,
+                                            jstring script,
+                                            jobject callback,
+                                            jboolean start_renderer) {
+  RenderViewHost* rvh = web_contents_->GetRenderViewHost();
+  DCHECK(rvh);
+
+  if (start_renderer && !rvh->IsRenderViewLive()) {
+    if (!static_cast<WebContentsImpl*>(web_contents_)->
+        CreateRenderViewForInitialEmptyDocument()) {
+      LOG(ERROR) << "Failed to create RenderView in EvaluateJavaScript";
+      return;
+    }
+  }
+
+  if (!callback) {
+    // No callback requested.
+    web_contents_->GetMainFrame()->ExecuteJavaScript(
+        ConvertJavaStringToUTF16(env, script));
+    return;
+  }
+
+  // Secure the Java callback in a scoped object and give ownership of it to the
+  // base::Callback.
+  ScopedJavaGlobalRef<jobject> j_callback;
+  j_callback.Reset(env, callback);
+  content::RenderFrameHost::JavaScriptResultCallback js_callback =
+      base::Bind(&JavaScriptResultCallback, j_callback);
+
+  web_contents_->GetMainFrame()->ExecuteJavaScript(
+      ConvertJavaStringToUTF16(env, script), js_callback);
+}
+
 }  // namespace content

content/browser/web_contents/web_contents_android.h

@@ -83,6 +83,11 @@ class CONTENT_EXPORT WebContentsAndroid
   void SelectWordAroundCaret(JNIEnv* env, jobject obj);
 
   void InsertCSS(JNIEnv* env, jobject jobj, jstring jcss);
+  void EvaluateJavaScript(JNIEnv* env,
+                          jobject obj,
+                          jstring script,
+                          jobject callback,
+                          jboolean start_renderer);
 
  private:
   RenderWidgetHostViewAndroid* GetRenderWidgetHostViewAndroid();

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

@@ -76,6 +76,7 @@
 import org.chromium.content.browser.input.SelectionEventType;
 import org.chromium.content.common.ContentSwitches;
 import org.chromium.content_public.browser.GestureStateListener;
+import org.chromium.content_public.browser.JavaScriptCallback;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.ui.base.DeviceFormFactor;
 import org.chromium.ui.base.ViewAndroid;
@@ -1354,11 +1355,6 @@ public void addStyleSheetByURL(String url) {
         mWebContents.addStyleSheetByURL(url);
     }
 
-    /** Callback interface for evaluateJavaScript(). */
-    public interface JavaScriptCallback {
-        void handleJavaScriptResult(String jsonResult);
-    }
-
     /**
      * Injects the passed Javascript code in the current page and evaluates it.
      * If a result is required, pass in a callback.
@@ -1371,8 +1367,8 @@ public interface JavaScriptCallback {
      *                 If no result is required, pass null.
      */
     public void evaluateJavaScript(String script, JavaScriptCallback callback) {
-        if (mNativeContentViewCore == 0) return;
-        nativeEvaluateJavaScript(mNativeContentViewCore, script, callback, false);
+        assert mWebContents != null;
+        mWebContents.evaluateJavaScript(script, callback, false);
     }
 
     /**
@@ -1382,8 +1378,8 @@ public void evaluateJavaScript(String script, JavaScriptCallback callback) {
      * @param script The Javascript to execute.
      */
     public void evaluateJavaScriptEvenIfNotYetNavigated(String script) {
-        if (mNativeContentViewCore == 0) return;
-        nativeEvaluateJavaScript(mNativeContentViewCore, script, null, true);
+        assert mWebContents != null;
+        mWebContents.evaluateJavaScript(script, null, true);
     }
 
     /**
@@ -2408,13 +2404,6 @@ private void onSelectionChanged(String text) {
         getContentViewClient().onSelectionChanged(text);
     }
 
-    @SuppressWarnings("unused")
-    @CalledByNative
-    private static void onEvaluateJavaScriptResult(
-            String jsonResult, JavaScriptCallback callback) {
-        callback.handleJavaScriptResult(jsonResult);
-    }
-
     @SuppressWarnings("unused")
     @CalledByNative
     private void showPastePopup(int xDip, int yDip) {
@@ -3175,9 +3164,6 @@ private native void nativeSetMultiTouchZoomSupportEnabled(
 
     private native void nativeClearHistory(long nativeContentViewCoreImpl);
 
-    private native void nativeEvaluateJavaScript(long nativeContentViewCoreImpl,
-            String script, JavaScriptCallback callback, boolean startRenderer);
-
     private native void nativePostMessageToFrame(long nativeContentViewCoreImpl, String frameId,
             String message, String sourceOrigin, String targetOrigin);
 

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

@@ -6,6 +6,7 @@
 
 import org.chromium.base.CalledByNative;
 import org.chromium.base.JNINamespace;
+import org.chromium.content_public.browser.JavaScriptCallback;
 import org.chromium.content_public.browser.NavigationController;
 import org.chromium.content_public.browser.NavigationTransitionDelegate;
 import org.chromium.content_public.browser.WebContents;
@@ -167,6 +168,7 @@ public void setNavigationTransitionDelegate(NavigationTransitionDelegate delegat
     /**
      * Inserts the provided markup sandboxed into the frame.
      */
+    @Override
     public void setupTransitionView(String markup) {
         nativeSetupTransitionView(mNativeWebContentsAndroid, markup);
     }
@@ -175,6 +177,7 @@ public void setupTransitionView(String markup) {
      * Hides transition elements specified by the selector, and activates any
      * exiting-transition stylesheets.
      */
+    @Override
     public void beginExitTransition(String cssSelector) {
         nativeBeginExitTransition(mNativeWebContentsAndroid, cssSelector);
     }
@@ -208,6 +211,18 @@ private void didStartNavigationTransitionForFrame(long frameId) {
         }
     }
 
+    @Override
+    public void evaluateJavaScript(String script, JavaScriptCallback callback,
+            boolean startRenderer) {
+         nativeEvaluateJavaScript(mNativeWebContentsAndroid, script, callback, true);
+    }
+
+    @CalledByNative
+    private static void onEvaluateJavaScriptResult(
+            String jsonResult, JavaScriptCallback callback) {
+        callback.handleJavaScriptResult(jsonResult);
+    }
+
     private native String nativeGetTitle(long nativeWebContentsAndroid);
     private native String nativeGetVisibleURL(long nativeWebContentsAndroid);
     private native void nativeStop(long nativeWebContentsAndroid);
@@ -236,4 +251,6 @@ private native void nativeSetupTransitionView(long nativeWebContentsAndroid,
             String markup);
     private native void nativeBeginExitTransition(long nativeWebContentsAndroid,
             String cssSelector);
+    private native void nativeEvaluateJavaScript(long nativeWebContentsAndroid,
+            String script, JavaScriptCallback callback, boolean startRenderer);
 }

content/public/android/java/src/org/chromium/content_public/browser/JavaScriptCallback.java

@@ -0,0 +1,14 @@
+// Copyright 2014 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_public.browser;
+
+/** Callback interface for WebContents evaluateJavaScript(). */
+public interface JavaScriptCallback {
+    /**
+     * Called from native in response to evaluateJavaScript().
+     * @param jsonResult json result curresponds to JS execution
+     */
+    void handleJavaScriptResult(String jsonResult);
+}

content/public/android/java/src/org/chromium/content_public/browser/WebContents.java

@@ -146,4 +146,18 @@ public void updateTopControlsState(boolean enableHiding, boolean enableShowing,
      */
     public void beginExitTransition(String cssSelector);
 
+    /**
+     * Injects the passed Javascript code in the current page and evaluates it.
+     * If a result is required, pass in a callback.
+     *
+     * @param script The Javascript to execute.
+     * @param callback The callback to be fired off when a result is ready. The script's
+     *                 result will be json encoded and passed as the parameter, and the call
+     *                 will be made on the main thread.
+     *                 If no result is required, pass null.
+     * @param startRenderer Tells whether to start Renderer or not for initial empty document
+     */
+    public void evaluateJavaScript(String script, JavaScriptCallback callback,
+            boolean startRenderer);
+
 }

content/public/android/javatests/src/org/chromium/content/browser/JavaBridgeChildFrameTest.java

@@ -7,6 +7,7 @@
 import android.test.suitebuilder.annotation.SmallTest;
 
 import org.chromium.base.test.util.Feature;
+import org.chromium.content_public.browser.JavaScriptCallback;
 
 /**
  * Part of the test suite for the WebView's Java Bridge.
@@ -103,7 +104,7 @@ private String executeJavaScriptAndGetResult(final ContentViewCore contentViewCo
             final String script) throws Throwable {
         final String[] result = new String[1];
         class ResultCallback extends JavaBridgeTestBase.Controller
-                implements ContentViewCore.JavaScriptCallback {
+                implements JavaScriptCallback {
             @Override
             public void handleJavaScriptResult(String jsonResult) {
                 result[0] = jsonResult;

content/public/test/android/javatests/src/org/chromium/content/browser/test/util/TestCallbackHelperContainer.java

@@ -7,6 +7,7 @@
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.content.browser.ContentViewCore;
+import org.chromium.content_public.browser.JavaScriptCallback;
 
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
@@ -109,8 +110,8 @@ public static class OnEvaluateJavaScriptResultHelper extends CallbackHelper {
          * @param code A JavaScript code to be evaluated.
          */
         public void evaluateJavaScript(ContentViewCore contentViewCore, String code) {
-            ContentViewCore.JavaScriptCallback callback =
-                new ContentViewCore.JavaScriptCallback() {
+            JavaScriptCallback callback =
+                new JavaScriptCallback() {
                     @Override
                     public void handleJavaScriptResult(String jsonResult) {
                         notifyCalled(jsonResult);