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// Copyright (c) 2010 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 CHROME_BROWSER_SPEECH_SPEECH_INPUT_DISPATCHER_HOST_H_
#define CHROME_BROWSER_SPEECH_SPEECH_INPUT_DISPATCHER_HOST_H_
#include "base/basictypes.h"
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/speech/speech_input_manager.h"
#include "ipc/ipc_message.h"
namespace speech_input {
// SpeechInputDispatcherHost is a delegate for Speech API messages used by
// ResourceMessageFilter.
// It's the complement of SpeechInputDispatcher (owned by RenderView).
class SpeechInputDispatcherHost
: public base::RefCountedThreadSafe<SpeechInputDispatcherHost>,
public SpeechInputManager::Delegate {
public:
explicit SpeechInputDispatcherHost(int resource_message_filter_process_id);
// SpeechInputManager::Delegate methods.
void SetRecognitionResult(int caller_id,
const SpeechInputResultArray& result);
void DidCompleteRecording(int caller_id);
void DidCompleteRecognition(int caller_id);
// Called to possibly handle the incoming IPC message. Returns true if
// handled.
bool OnMessageReceived(const IPC::Message& msg, bool* msg_was_ok);
// Singleton accessor setter useful for tests.
static void set_manager_accessor(SpeechInputManager::AccessorMethod* method) {
manager_accessor_ = method;
}
private:
class SpeechInputCallers;
friend class base::RefCountedThreadSafe<SpeechInputDispatcherHost>;
virtual ~SpeechInputDispatcherHost();
void SendMessageToRenderView(IPC::Message* message, int render_view_id);
void OnStartRecognition(int render_view_id, int request_id,
const gfx::Rect& element_rect,
const std::string& language,
const std::string& grammar);
void OnCancelRecognition(int render_view_id, int request_id);
void OnStopRecording(int render_view_id, int request_id);
// Returns the speech input manager to forward events to, creating one if
// needed.
SpeechInputManager* manager();
int resource_message_filter_process_id_;
SpeechInputCallers* callers_; // weak reference to a singleton.
static SpeechInputManager::AccessorMethod* manager_accessor_;
DISALLOW_COPY_AND_ASSIGN(SpeechInputDispatcherHost);
};
} // namespace speech_input
#endif // CHROME_BROWSER_SPEECH_SPEECH_INPUT_DISPATCHER_HOST_H_
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