content/browser/renderer_host/ime_adapter_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 CONTENT_BROWSER_RENDERER_HOST_IME_ADAPTER_ANDROID_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_IME_ADAPTER_ANDROID_H_
   7
   8 #include <jni.h>
   9
  10 #include "base/android/jni_weak_ref.h"
  11
  12 namespace content {
  13
  14 class RenderFrameHost;
  15 class RenderWidgetHostImpl;
  16 class RenderWidgetHostViewAndroid;
  17 class WebContents;
  18 struct NativeWebKeyboardEvent;
  19
  20 // This class is in charge of dispatching key events from the java side
  21 // and forward to renderer along with input method results via
  22 // corresponding host view.
  23 // Ownership of these objects remains on the native side (see
  24 // RenderWidgetHostViewAndroid).
  25 class ImeAdapterAndroid {
  26  public:
  27   explicit ImeAdapterAndroid(RenderWidgetHostViewAndroid* rwhva);
  28   ~ImeAdapterAndroid();
  29
  30   // Called from java -> native
  31   // The java side is responsible to translate android KeyEvent various enums
  32   // and values into the corresponding blink::WebInputEvent.
  33   bool SendKeyEvent(JNIEnv* env, jobject,
  34                     jobject original_key_event,
  35                     int action, int meta_state,
  36                     long event_time, int key_code,
  37                     int scan_code, bool is_system_key,
  38                     int unicode_text);
  39   // |event_type| is a value of WebInputEvent::Type.
  40   bool SendSyntheticKeyEvent(JNIEnv*,
  41                              jobject,
  42                              int event_type,
  43                              long timestamp_ms,
  44                              int native_key_code,
  45                              int modifiers,
  46                              int unicode_char);
  47   void SetComposingText(JNIEnv*,
  48                         jobject obj,
  49                         jobject text,
  50                         jstring text_str,
  51                         int new_cursor_pos);
  52   void CommitText(JNIEnv*, jobject, jstring text_str);
  53   void FinishComposingText(JNIEnv* env, jobject);
  54   void AttachImeAdapter(JNIEnv*, jobject java_object);
  55   void SetEditableSelectionOffsets(JNIEnv*, jobject, int start, int end);
  56   void SetComposingRegion(JNIEnv*, jobject, int start, int end);
  57   void DeleteSurroundingText(JNIEnv*, jobject, int before, int after);
  58   void ResetImeAdapter(JNIEnv*, jobject);
  59
  60   // Called from native -> java
  61   void CancelComposition();
  62   void FocusedNodeChanged(bool is_editable_node);
  63
  64  private:
  65   RenderWidgetHostImpl* GetRenderWidgetHostImpl();
  66   RenderFrameHost* GetFocusedFrame();
  67   WebContents* GetWebContents();
  68
  69   RenderWidgetHostViewAndroid* rwhva_;
  70   JavaObjectWeakGlobalRef java_ime_adapter_;
  71 };
  72
  73 bool RegisterImeAdapter(JNIEnv* env);
  74
  75 }  // namespace content
  76
  77 #endif  // CONTENT_BROWSER_RENDERER_HOST_IME_ADAPTER_ANDROID_H_