content/browser/web_contents/web_contents_android.h

// 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.

#ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_ANDROID_H_
#define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_ANDROID_H_

#include <jni.h>

#include "base/android/scoped_java_ref.h"
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/supports_user_data.h"
#include "content/browser/frame_host/navigation_controller_android.h"
#include "content/browser/renderer_host/render_widget_host_view_android.h"
#include "content/browser/transition_request_manager.h"
#include "content/common/content_export.h"

namespace content {

class WebContents;
struct TransitionLayerData;

// Android wrapper around WebContents that provides safer passage from java and
// back to native and provides java with a means of communicating with its
// native counterpart.
class CONTENT_EXPORT WebContentsAndroid
    : public base::SupportsUserData::Data {
 public:
  static bool Register(JNIEnv* env);

  explicit WebContentsAndroid(WebContents* web_contents);
  virtual ~WebContentsAndroid();

  WebContents* web_contents() const { return web_contents_; }

  base::android::ScopedJavaLocalRef<jobject> GetJavaObject();

  // Methods called from Java
  base::android::ScopedJavaLocalRef<jstring> GetTitle(JNIEnv* env,
                                                      jobject obj) const;
  base::android::ScopedJavaLocalRef<jstring> GetVisibleURL(JNIEnv* env,
                                                           jobject obj) const;

  bool IsLoading(JNIEnv* env, jobject obj) const;
  bool IsLoadingToDifferentDocument(JNIEnv* env, jobject obj) const;

  void Stop(JNIEnv* env, jobject obj);
  jint GetBackgroundColor(JNIEnv* env, jobject obj);
  base::android::ScopedJavaLocalRef<jstring> GetURL(JNIEnv* env, jobject) const;
  jboolean IsIncognito(JNIEnv* env, jobject obj);

  void ResumeResponseDeferredAtStart(JNIEnv* env, jobject obj);
  void SetHasPendingNavigationTransitionForTesting(JNIEnv* env, jobject obj);
  void SetupTransitionView(JNIEnv* env, jobject jobj, jstring markup);
  void BeginExitTransition(JNIEnv* env, jobject jobj, jstring css_selector,
                           jboolean exit_to_native_app);
  void RevertExitTransition(JNIEnv* env, jobject jobj);
  void HideTransitionElements(JNIEnv* env, jobject jobj, jstring css_selector);
  void ShowTransitionElements(JNIEnv* env, jobject jobj, jstring css_selector);
  void ClearNavigationTransitionData(JNIEnv* env, jobject jobj);
  void FetchTransitionElements(JNIEnv* env, jobject jobj, jstring jurl);
  void OnTransitionElementsFetched(
      scoped_ptr<const TransitionLayerData> transition_data,
      bool has_transition_data);

  // This method is invoked when the request is deferred immediately after
  // receiving response headers.
  void DidDeferAfterResponseStarted(const TransitionLayerData& transition_data);

  // This method is invoked when a navigation transition is detected, to
  // determine if the embedder intends to handle it.
  bool WillHandleDeferAfterResponseStarted();

  // This method is invoked when a navigation transition has started.
  void DidStartNavigationTransitionForFrame(int64 frame_id);

  void OnHide(JNIEnv* env, jobject obj);
  void OnShow(JNIEnv* env, jobject obj);
  void ReleaseMediaPlayers(JNIEnv* env, jobject jobj);

  void AddStyleSheetByURL(
      JNIEnv* env, jobject obj, jstring url);
  void ShowInterstitialPage(
      JNIEnv* env, jobject obj, jstring jurl, jlong delegate_ptr);
  jboolean IsShowingInterstitialPage(JNIEnv* env, jobject obj);
  jboolean IsRenderWidgetHostViewReady(JNIEnv* env, jobject obj);
  void ExitFullscreen(JNIEnv* env, jobject obj);
  void UpdateTopControlsState(
      JNIEnv* env,
      jobject obj,
      bool enable_hiding,
      bool enable_showing,
      bool animate);
  void ShowImeIfNeeded(JNIEnv* env, jobject obj);
  void ScrollFocusedEditableNodeIntoView(JNIEnv* env, jobject obj);
  void SelectWordAroundCaret(JNIEnv* env, jobject obj);

  void InsertCSS(JNIEnv* env, jobject jobj, jstring jcss);
  void EvaluateJavaScript(JNIEnv* env,
                          jobject obj,
                          jstring script,
                          jobject callback);

  void AddMessageToDevToolsConsole(JNIEnv* env,
                                   jobject jobj,
                                   jint level,
                                   jstring message);

 private:
  RenderWidgetHostViewAndroid* GetRenderWidgetHostViewAndroid();

  WebContents* web_contents_;
  NavigationControllerAndroid navigation_controller_;
  base::android::ScopedJavaGlobalRef<jobject> obj_;

  base::WeakPtrFactory<WebContentsAndroid> weak_factory_;

  DISALLOW_COPY_AND_ASSIGN(WebContentsAndroid);
};

}  // namespace content

#endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_ANDROID_H_