[Android] Add proxy for Java-based WebContentsObservers

content/browser/android/web_contents_observer_android.cc

Index: content/browser/android/web_contents_observer_android.cc
diff --git a/content/browser/android/web_contents_observer_android.cc b/content/browser/android/web_contents_observer_android.cc
deleted file mode 100644
index e056f3125106b50c009b366a48cf52293710bd7f..0000000000000000000000000000000000000000
--- a/content/browser/android/web_contents_observer_android.cc
+++ /dev/null
@@ -1,355 +0,0 @@
-// Copyright (c) 2012 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.
-
-#include "content/browser/android/web_contents_observer_android.h"
-
-#include <string>
-
-#include <jni.h>
-
-#include "base/android/jni_android.h"
-#include "base/android/jni_string.h"
-#include "base/android/scoped_java_ref.h"
-#include "content/browser/renderer_host/render_widget_host_impl.h"
-#include "content/browser/web_contents/web_contents_impl.h"
-#include "content/public/browser/navigation_details.h"
-#include "content/public/browser/navigation_entry.h"
-#include "jni/WebContentsObserver_jni.h"
-
-using base::android::AttachCurrentThread;
-using base::android::ScopedJavaLocalRef;
-using base::android::ConvertUTF8ToJavaString;
-using base::android::ConvertUTF16ToJavaString;
-
-namespace content {
-
-// TODO(dcheng): File a bug. This class incorrectly passes just a frame ID,
-// which is not sufficient to identify a frame (since frame IDs are scoped per
-// render process, and so may collide).
-WebContentsObserverAndroid::WebContentsObserverAndroid(
-    JNIEnv* env,
-    jobject obj,
-    WebContents* web_contents)
-    : WebContentsObserver(web_contents),
-      weak_java_observer_(env, obj){
-}
-
-WebContentsObserverAndroid::~WebContentsObserverAndroid() {
-}
-
-jlong Init(JNIEnv* env, jobject obj, jobject java_web_contents) {
-  WebContents* web_contents =
-      WebContents::FromJavaWebContents(java_web_contents);
-  CHECK(web_contents);
-
-  WebContentsObserverAndroid* native_observer = new WebContentsObserverAndroid(
-      env, obj, web_contents);
-  return reinterpret_cast<intptr_t>(native_observer);
-}
-
-void WebContentsObserverAndroid::Destroy(JNIEnv* env, jobject obj) {
-  delete this;
-}
-
-void WebContentsObserverAndroid::WebContentsDestroyed() {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null()) {
-    delete this;
-  } else {
-    // The java side will destroy |this|
-    Java_WebContentsObserver_detachFromWebContents(env, obj.obj());
-  }
-}
-
-void WebContentsObserverAndroid::RenderViewReady() {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  Java_WebContentsObserver_renderViewReady(env, obj.obj());
-}
-
-void WebContentsObserverAndroid::RenderProcessGone(
-    base::TerminationStatus termination_status) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  jboolean was_oom_protected =
-      termination_status == base::TERMINATION_STATUS_OOM_PROTECTED;
-  Java_WebContentsObserver_renderProcessGone(
-      env, obj.obj(), was_oom_protected);
-}
-
-void WebContentsObserverAndroid::DidStartLoading(
-    RenderViewHost* render_view_host) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  ScopedJavaLocalRef<jstring> jstring_url(ConvertUTF8ToJavaString(
-      env, web_contents()->GetVisibleURL().spec()));
-  Java_WebContentsObserver_didStartLoading(
-      env, obj.obj(), jstring_url.obj());
-}
-
-void WebContentsObserverAndroid::DidStopLoading(
-    RenderViewHost* render_view_host) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  ScopedJavaLocalRef<jstring> jstring_url(ConvertUTF8ToJavaString(
-      env, web_contents()->GetLastCommittedURL().spec()));
-  Java_WebContentsObserver_didStopLoading(
-      env, obj.obj(), jstring_url.obj());
-}
-
-void WebContentsObserverAndroid::DidFailProvisionalLoad(
-    RenderFrameHost* render_frame_host,
-    const GURL& validated_url,
-    int error_code,
-    const base::string16& error_description) {
-  DidFailLoadInternal(true,
-                      !render_frame_host->GetParent(),
-                      error_code,
-                      error_description,
-                      validated_url);
-}
-
-void WebContentsObserverAndroid::DidFailLoad(
-    RenderFrameHost* render_frame_host,
-    const GURL& validated_url,
-    int error_code,
-    const base::string16& error_description) {
-  DidFailLoadInternal(false,
-                      !render_frame_host->GetParent(),
-                      error_code,
-                      error_description,
-                      validated_url);
-}
-
-void WebContentsObserverAndroid::DidNavigateMainFrame(
-    const LoadCommittedDetails& details,
-    const FrameNavigateParams& params) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  ScopedJavaLocalRef<jstring> jstring_url(
-      ConvertUTF8ToJavaString(env, params.url.spec()));
-  ScopedJavaLocalRef<jstring> jstring_base_url(
-      ConvertUTF8ToJavaString(env, params.base_url.spec()));
-
-  // See http://crbug.com/251330 for why it's determined this way.
-  url::Replacements<char> replacements;
-  replacements.ClearRef();
-  bool urls_same_ignoring_fragment =
-      params.url.ReplaceComponents(replacements) ==
-      details.previous_url.ReplaceComponents(replacements);
-
-  // is_fragment_navigation is indicative of the intent of this variable.
-  // However, there isn't sufficient information here to determine whether this
-  // is actually a fragment navigation, or a history API navigation to a URL
-  // that would also be valid for a fragment navigation.
-  bool is_fragment_navigation = urls_same_ignoring_fragment &&
-      (details.type == NAVIGATION_TYPE_IN_PAGE || details.is_in_page);
-  Java_WebContentsObserver_didNavigateMainFrame(
-      env, obj.obj(), jstring_url.obj(), jstring_base_url.obj(),
-      details.is_navigation_to_different_page(), is_fragment_navigation,
-      details.http_status_code);
-}
-
-void WebContentsObserverAndroid::DidNavigateAnyFrame(
-    RenderFrameHost* render_frame_host,
-    const LoadCommittedDetails& details,
-    const FrameNavigateParams& params) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  ScopedJavaLocalRef<jstring> jstring_url(
-      ConvertUTF8ToJavaString(env, params.url.spec()));
-  ScopedJavaLocalRef<jstring> jstring_base_url(
-      ConvertUTF8ToJavaString(env, params.base_url.spec()));
-  jboolean jboolean_is_reload = ui::PageTransitionCoreTypeIs(
-      params.transition, ui::PAGE_TRANSITION_RELOAD);
-
-  Java_WebContentsObserver_didNavigateAnyFrame(
-      env, obj.obj(), jstring_url.obj(), jstring_base_url.obj(),
-      jboolean_is_reload);
-}
-
-void WebContentsObserverAndroid::DocumentAvailableInMainFrame() {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  Java_WebContentsObserver_documentAvailableInMainFrame(env, obj.obj());
-}
-
-void WebContentsObserverAndroid::DidStartProvisionalLoadForFrame(
-    RenderFrameHost* render_frame_host,
-    const GURL& validated_url,
-    bool is_error_page,
-    bool is_iframe_srcdoc) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  ScopedJavaLocalRef<jstring> jstring_url(
-      ConvertUTF8ToJavaString(env, validated_url.spec()));
-  // TODO(dcheng): Does Java really need the parent frame ID? It doesn't appear
-  // to be used at all, and it just adds complexity here.
-  Java_WebContentsObserver_didStartProvisionalLoadForFrame(
-      env,
-      obj.obj(),
-      render_frame_host->GetRoutingID(),
-      render_frame_host->GetParent()
-          ? render_frame_host->GetParent()->GetRoutingID()
-          : -1,
-      !render_frame_host->GetParent(),
-      jstring_url.obj(),
-      is_error_page,
-      is_iframe_srcdoc);
-}
-
-void WebContentsObserverAndroid::DidCommitProvisionalLoadForFrame(
-    RenderFrameHost* render_frame_host,
-    const GURL& url,
-    ui::PageTransition transition_type) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  ScopedJavaLocalRef<jstring> jstring_url(
-      ConvertUTF8ToJavaString(env, url.spec()));
-  Java_WebContentsObserver_didCommitProvisionalLoadForFrame(
-      env,
-      obj.obj(),
-      render_frame_host->GetRoutingID(),
-      !render_frame_host->GetParent(),
-      jstring_url.obj(),
-      transition_type);
-}
-
-void WebContentsObserverAndroid::DidFinishLoad(
-    RenderFrameHost* render_frame_host,
-    const GURL& validated_url) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-
-  std::string url_string = validated_url.spec();
-  NavigationEntry* entry =
-    web_contents()->GetController().GetLastCommittedEntry();
-  // Note that GetBaseURLForDataURL is only used by the Android WebView.
-  if (entry && !entry->GetBaseURLForDataURL().is_empty())
-    url_string = entry->GetBaseURLForDataURL().possibly_invalid_spec();
-
-  ScopedJavaLocalRef<jstring> jstring_url(
-      ConvertUTF8ToJavaString(env, url_string));
-  Java_WebContentsObserver_didFinishLoad(
-      env,
-      obj.obj(),
-      render_frame_host->GetRoutingID(),
-      jstring_url.obj(),
-      !render_frame_host->GetParent());
-}
-
-void WebContentsObserverAndroid::DocumentLoadedInFrame(
-    RenderFrameHost* render_frame_host) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  Java_WebContentsObserver_documentLoadedInFrame(
-      env, obj.obj(), render_frame_host->GetRoutingID());
-}
-
-void WebContentsObserverAndroid::NavigationEntryCommitted(
-    const LoadCommittedDetails& load_details) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  Java_WebContentsObserver_navigationEntryCommitted(env, obj.obj());
-}
-
-void WebContentsObserverAndroid::DidAttachInterstitialPage() {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  Java_WebContentsObserver_didAttachInterstitialPage(env, obj.obj());
-}
-
-void WebContentsObserverAndroid::DidDetachInterstitialPage() {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  Java_WebContentsObserver_didDetachInterstitialPage(env, obj.obj());
-}
-
-void WebContentsObserverAndroid::DidChangeThemeColor(SkColor color) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  Java_WebContentsObserver_didChangeThemeColor(env, obj.obj(), color);
-}
-
-void WebContentsObserverAndroid::DidFailLoadInternal(
-    bool is_provisional_load,
-    bool is_main_frame,
-    int error_code,
-    const base::string16& description,
-    const GURL& url) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  ScopedJavaLocalRef<jstring> jstring_error_description(
-      ConvertUTF16ToJavaString(env, description));
-  ScopedJavaLocalRef<jstring> jstring_url(
-      ConvertUTF8ToJavaString(env, url.spec()));
-
-  Java_WebContentsObserver_didFailLoad(
-      env, obj.obj(),
-      is_provisional_load,
-      is_main_frame,
-      error_code,
-      jstring_error_description.obj(), jstring_url.obj());
-}
-
-void WebContentsObserverAndroid::DidFirstVisuallyNonEmptyPaint() {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  Java_WebContentsObserver_didFirstVisuallyNonEmptyPaint(
-      env, obj.obj());
-}
-
-void WebContentsObserverAndroid::DidStartNavigationToPendingEntry(
-    const GURL& url,
-    NavigationController::ReloadType reload_type) {
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj(weak_java_observer_.get(env));
-  if (obj.is_null())
-    return;
-  ScopedJavaLocalRef<jstring> jstring_url(
-      ConvertUTF8ToJavaString(env, url.spec()));
-
-  Java_WebContentsObserver_didStartNavigationToPendingEntry(env, obj.obj(),
-                                                            jstring_url.obj());
-}
-
-bool RegisterWebContentsObserverAndroid(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-}  // namespace content