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// Copyright 2014 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.
#include "ui/base/ime/ime_bridge.h"
#include <map>
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/singleton.h"
#include "build/build_config.h"
namespace ui {
static IMEBridge* g_ime_bridge = nullptr;
// An implementation of IMEBridge.
class IMEBridgeImpl : public IMEBridge {
public:
#if defined(OS_CHROMEOS)
IMEBridgeImpl()
: input_context_handler_(nullptr),
engine_handler_(nullptr),
observer_(nullptr),
current_input_context_(ui::TEXT_INPUT_TYPE_NONE,
ui::TEXT_INPUT_MODE_DEFAULT,
0),
candidate_window_handler_(nullptr) {}
#else
IMEBridgeImpl()
: input_context_handler_(nullptr),
engine_handler_(nullptr),
observer_(nullptr),
current_input_context_(ui::TEXT_INPUT_TYPE_NONE,
ui::TEXT_INPUT_MODE_DEFAULT,
0) {}
#endif
~IMEBridgeImpl() override {}
// IMEBridge override.
IMEInputContextHandlerInterface* GetInputContextHandler() const override {
return input_context_handler_;
}
// IMEBridge override.
void SetInputContextHandler(
IMEInputContextHandlerInterface* handler) override {
input_context_handler_ = handler;
}
// IMEBridge override.
void SetCurrentEngineHandler(IMEEngineHandlerInterface* handler) override {
engine_handler_ = handler;
}
// IMEBridge override.
IMEEngineHandlerInterface* GetCurrentEngineHandler() const override {
return engine_handler_;
}
// IMEBridge override.
void SetCurrentInputContext(
const IMEEngineHandlerInterface::InputContext& input_context) override {
current_input_context_ = input_context;
}
// IMEBridge override.
const IMEEngineHandlerInterface::InputContext& GetCurrentInputContext()
const override {
return current_input_context_;
}
// IMEBridge override.
void SetObserver(ui::IMEBridgeObserver* observer) override {
observer_ = observer;
}
// IMEBridge override.
void MaybeSwitchEngine() override {
if (observer_)
observer_->OnRequestSwitchEngine();
}
#if defined(OS_CHROMEOS)
// IMEBridge override.
void SetCandidateWindowHandler(
chromeos::IMECandidateWindowHandlerInterface* handler) override {
candidate_window_handler_ = handler;
}
// IMEBridge override.
chromeos::IMECandidateWindowHandlerInterface* GetCandidateWindowHandler()
const override {
return candidate_window_handler_;
}
#endif
private:
IMEInputContextHandlerInterface* input_context_handler_;
IMEEngineHandlerInterface* engine_handler_;
IMEBridgeObserver* observer_;
IMEEngineHandlerInterface::InputContext current_input_context_;
#if defined(OS_CHROMEOS)
chromeos::IMECandidateWindowHandlerInterface* candidate_window_handler_;
#endif
DISALLOW_COPY_AND_ASSIGN(IMEBridgeImpl);
};
///////////////////////////////////////////////////////////////////////////////
// IMEBridge
IMEBridge::IMEBridge() {}
IMEBridge::~IMEBridge() {}
// static.
void IMEBridge::Initialize() {
if (!g_ime_bridge)
g_ime_bridge = new IMEBridgeImpl();
}
// static.
void IMEBridge::Shutdown() {
delete g_ime_bridge;
g_ime_bridge = nullptr;
}
// static.
IMEBridge* IMEBridge::Get() {
return g_ime_bridge;
}
} // namespace ui
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