chrome/browser/spellchecker/spellchecker_session_bridge_android.h

   1 // Copyright 2015 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 CHROME_BROWSER_SPELLCHECKER_SPELLCHECKER_SESSION_BRIDGE_ANDROID_H_
   6 #define CHROME_BROWSER_SPELLCHECKER_SPELLCHECKER_SESSION_BRIDGE_ANDROID_H_
   7
   8 #include <jni.h>
   9
  10 #include "base/android/scoped_java_ref.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/strings/string16.h"
  13
  14 // A class used to interface between the Java class of the same name and the
  15 // android message filter.  This class receives text to be spellchecked
  16 // from the message filter, sends that text to the Java side via JNI to be
  17 // spellchecked, and then sends those results to the renderer.
  18 class SpellCheckerSessionBridge {
  19  public:
  20   explicit SpellCheckerSessionBridge(int render_process_id);
  21   ~SpellCheckerSessionBridge();
  22   static bool RegisterJNI(JNIEnv* env);
  23
  24   // Receives text to be checked from the message filter and sends it to Java
  25   // to be spellchecked.
  26   void RequestTextCheck(int route_id,
  27                         int identifier,
  28                         const base::string16& text);
  29
  30   // Receives information from Java side about the typos in a given string
  31   // of text, processes these and sends them to the renderer.
  32   void ProcessSpellCheckResults(JNIEnv* env,
  33                                 jobject jobj,
  34                                 jintArray offset_array,
  35                                 jintArray length_array);
  36
  37   // Sets the handle to the Java SpellCheckerSessionBridge object to null,
  38   // marking the Java object for garbage collection.
  39   void DisconnectSession();
  40
  41  private:
  42   struct SpellingRequest {
  43     SpellingRequest(int route_id, int identifier, const base::string16& text);
  44     ~SpellingRequest();
  45
  46     int route_id;
  47     int identifier;
  48     base::string16 text;
  49   };
  50
  51   int render_process_id_;
  52
  53   scoped_ptr<SpellingRequest> active_request_;
  54   scoped_ptr<SpellingRequest> pending_request_;
  55
  56   base::android::ScopedJavaGlobalRef<jobject> java_object_;
  57   bool java_object_initialization_failed_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(SpellCheckerSessionBridge);
  60 };
  61
  62 #endif  // CHROME_BROWSER_SPELLCHECKER_SPELLCHECKER_SESSION_BRIDGE_ANDROID_H_