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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef ANDROID_WEBVIEW_NATIVE_AW_SETTINGS_H_
      6 #define ANDROID_WEBVIEW_NATIVE_AW_SETTINGS_H_
      7 
      8 #include <jni.h>
      9 
     10 #include "base/android/jni_helper.h"
     11 #include "base/android/scoped_java_ref.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "content/public/browser/web_contents_observer.h"
     14 
     15 struct WebPreferences;
     16 
     17 namespace android_webview {
     18 
     19 class AwRenderViewHostExt;
     20 
     21 class AwSettings : public content::WebContentsObserver {
     22  public:
     23   static AwSettings* FromWebContents(content::WebContents* web_contents);
     24 
     25   AwSettings(JNIEnv* env, jobject obj, jlong web_contents);
     26   virtual ~AwSettings();
     27 
     28   // Called from Java. Methods with "Locked" suffix require that the settings
     29   // access lock is held during their execution.
     30   void Destroy(JNIEnv* env, jobject obj);
     31   void PopulateWebPreferencesLocked(JNIEnv* env, jobject obj, jlong web_prefs);
     32   void ResetScrollAndScaleState(JNIEnv* env, jobject obj);
     33   void UpdateEverythingLocked(JNIEnv* env, jobject obj);
     34   void UpdateInitialPageScaleLocked(JNIEnv* env, jobject obj);
     35   void UpdateUserAgentLocked(JNIEnv* env, jobject obj);
     36   void UpdateWebkitPreferencesLocked(JNIEnv* env, jobject obj);
     37   void UpdateFormDataPreferencesLocked(JNIEnv* env, jobject obj);
     38 
     39   void PopulateWebPreferences(WebPreferences* web_prefs);
     40 
     41  private:
     42   AwRenderViewHostExt* GetAwRenderViewHostExt();
     43   void UpdateEverything();
     44 
     45   // Fixed WebPreferences for Android WebView.
     46   static void PopulateFixedPreferences(WebPreferences* web_prefs);
     47 
     48   // WebContentsObserver overrides:
     49   virtual void RenderViewCreated(
     50       content::RenderViewHost* render_view_host) OVERRIDE;
     51   virtual void WebContentsDestroyed(
     52       content::WebContents* web_contents) OVERRIDE;
     53 
     54   bool accelerated_2d_canvas_disabled_by_switch_;
     55 
     56   JavaObjectWeakGlobalRef aw_settings_;
     57 };
     58 
     59 bool RegisterAwSettings(JNIEnv* env);
     60 
     61 }  // namespace android_webview
     62 
     63 #endif  // ANDROID_WEBVIEW_NATIVE_AW_SETTINGS_H_
     64