components/web_contents_delegate_android/web_contents_delegate_android.h

   1 // Copyright (c) 2012 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 COMPONENTS_WEB_CONTENTS_DELEGATE_ANDROID_WEB_CONTENTS_DELEGATE_ANDROID_H_
   6 #define COMPONENTS_WEB_CONTENTS_DELEGATE_ANDROID_WEB_CONTENTS_DELEGATE_ANDROID_H_
   7
   8 #include "base/android/jni_helper.h"
   9 #include "base/android/scoped_java_ref.h"
  10 #include "base/compiler_specific.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "content/public/browser/web_contents_delegate.h"
  13
  14 class GURL;
  15
  16 namespace content {
  17 class WebContents;
  18 class WebContentsDelegate;
  19 struct NativeWebKeyboardEvent;
  20 struct OpenURLParams;
  21 }
  22
  23 namespace web_contents_delegate_android {
  24
  25 enum WebContentsDelegateLogLevel {
  26   // Equivalent of WebCore::WebConsoleMessage::LevelDebug.
  27   WEB_CONTENTS_DELEGATE_LOG_LEVEL_DEBUG = 0,
  28   // Equivalent of WebCore::WebConsoleMessage::LevelLog.
  29   WEB_CONTENTS_DELEGATE_LOG_LEVEL_LOG = 1,
  30   // Equivalent of WebCore::WebConsoleMessage::LevelWarning.
  31   WEB_CONTENTS_DELEGATE_LOG_LEVEL_WARNING = 2,
  32   // Equivalent of WebCore::WebConsoleMessage::LevelError.
  33   WEB_CONTENTS_DELEGATE_LOG_LEVEL_ERROR = 3,
  34 };
  35
  36
  37 // Native underpinnings of WebContentsDelegateAndroid.java. Provides a default
  38 // delegate for WebContents to forward calls to the java peer. The embedding
  39 // application may subclass and override methods on either the C++ or Java side
  40 // as required.
  41 class WebContentsDelegateAndroid : public content::WebContentsDelegate {
  42  public:
  43   WebContentsDelegateAndroid(JNIEnv* env, jobject obj);
  44   virtual ~WebContentsDelegateAndroid();
  45
  46   // Binds this WebContentsDelegateAndroid to the passed WebContents instance,
  47   // such that when that WebContents is destroyed, this
  48   // WebContentsDelegateAndroid instance will be destroyed too.
  49   void SetOwnerWebContents(content::WebContents* contents);
  50
  51   // Overridden from WebContentsDelegate:
  52   virtual content::WebContents* OpenURLFromTab(
  53       content::WebContents* source,
  54       const content::OpenURLParams& params) OVERRIDE;
  55   virtual content::ColorChooser* OpenColorChooser(content::WebContents* source,
  56                                                   SkColor color) OVERRIDE;
  57   virtual void NavigationStateChanged(const content::WebContents* source,
  58                                       unsigned changed_flags) OVERRIDE;
  59   virtual void ActivateContents(content::WebContents* contents) OVERRIDE;
  60   virtual void DeactivateContents(content::WebContents* contents) OVERRIDE;
  61   virtual void LoadingStateChanged(content::WebContents* source) OVERRIDE;
  62   virtual void LoadProgressChanged(content::WebContents* source,
  63                                    double load_progress) OVERRIDE;
  64   virtual void RendererUnresponsive(content::WebContents* source) OVERRIDE;
  65   virtual void RendererResponsive(content::WebContents* source) OVERRIDE;
  66   virtual void CloseContents(content::WebContents* source) OVERRIDE;
  67   virtual void MoveContents(content::WebContents* source,
  68                             const gfx::Rect& pos) OVERRIDE;
  69   virtual bool AddMessageToConsole(content::WebContents* source,
  70                                    int32 level,
  71                                    const base::string16& message,
  72                                    int32 line_no,
  73                                    const base::string16& source_id) OVERRIDE;
  74   virtual void UpdateTargetURL(content::WebContents* source,
  75                                int32 page_id,
  76                                const GURL& url) OVERRIDE;
  77   virtual void HandleKeyboardEvent(
  78       content::WebContents* source,
  79       const content::NativeWebKeyboardEvent& event) OVERRIDE;
  80   virtual bool TakeFocus(content::WebContents* source, bool reverse) OVERRIDE;
  81   virtual void ShowRepostFormWarningDialog(
  82       content::WebContents* source) OVERRIDE;
  83   virtual void ToggleFullscreenModeForTab(content::WebContents* web_contents,
  84                                           bool enter_fullscreen) OVERRIDE;
  85   virtual bool IsFullscreenForTabOrPending(
  86       const content::WebContents* web_contents) const OVERRIDE;
  87
  88  protected:
  89   base::android::ScopedJavaLocalRef<jobject> GetJavaDelegate(JNIEnv* env) const;
  90
  91  private:
  92   // We depend on the java side user of WebContentDelegateAndroid to hold a
  93   // strong reference to that object as long as they want to receive callbacks
  94   // on it. Using a weak ref here allows it to be correctly GCed.
  95   JavaObjectWeakGlobalRef weak_java_delegate_;
  96 };
  97
  98 bool RegisterWebContentsDelegateAndroid(JNIEnv* env);
  99
 100 }  // namespace web_contents_delegate_android
 101
 102 #endif  // COMPONENTS_WEB_CONTENTS_DELEGATE_ANDROID_WEB_CONTENTS_DELEGATE_ANDROID_H_