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// Copyright 2013 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 UI_BASE_IME_INPUT_METHOD_AURALINUX_H_
#define UI_BASE_IME_INPUT_METHOD_AURALINUX_H_
#include <memory>
#include "base/macros.h"
#include "ui/base/ime/composition_text.h"
#include "ui/base/ime/input_method_base.h"
#include "ui/base/ime/linux/linux_input_method_context.h"
namespace ui {
// A ui::InputMethod implementation for Aura on Linux platforms. The
// implementation details are separated to ui::LinuxInputMethodContext
// interface.
class UI_BASE_IME_EXPORT InputMethodAuraLinux
: public InputMethodBase,
public LinuxInputMethodContextDelegate {
public:
explicit InputMethodAuraLinux(internal::InputMethodDelegate* delegate);
~InputMethodAuraLinux() override;
LinuxInputMethodContext* GetContextForTesting(bool is_simple);
// Overriden from InputMethod.
bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
NativeEventResult* result) override;
void DispatchKeyEvent(ui::KeyEvent* event) override;
void OnTextInputTypeChanged(const TextInputClient* client) override;
void OnCaretBoundsChanged(const TextInputClient* client) override;
void CancelComposition(const TextInputClient* client) override;
void OnInputLocaleChanged() override;
std::string GetInputLocale() override;
bool IsCandidatePopupOpen() const override;
// Overriden from ui::LinuxInputMethodContextDelegate
void OnCommit(const base::string16& text) override;
void OnPreeditChanged(const CompositionText& composition_text) override;
void OnPreeditEnd() override;
void OnPreeditStart() override{};
protected:
// Overridden from InputMethodBase.
void OnWillChangeFocusedClient(TextInputClient* focused_before,
TextInputClient* focused) override;
void OnDidChangeFocusedClient(TextInputClient* focused_before,
TextInputClient* focused) override;
private:
bool HasInputMethodResult();
bool NeedInsertChar() const;
ui::EventDispatchDetails SendFakeProcessKeyEvent(ui::KeyEvent* event) const;
void ConfirmCompositionText();
void UpdateContextFocusState();
void ResetContext();
// Processes the key event after the event is processed by the system IME or
// the extension.
void ProcessKeyEventDone(ui::KeyEvent* event, bool filtered, bool is_handled);
// Callback function for IMEEngineHandlerInterface::ProcessKeyEvent().
// It recovers the context when the event is being passed to the extension and
// call ProcessKeyEventDone() for the following processing. This is necessary
// as this method is async. The environment may be changed by other generated
// key events by the time the callback is run.
void ProcessKeyEventByEngineDone(ui::KeyEvent* event,
bool filtered,
bool composition_changed,
ui::CompositionText* composition,
base::string16* result_text,
bool is_handled);
std::unique_ptr<LinuxInputMethodContext> context_;
std::unique_ptr<LinuxInputMethodContext> context_simple_;
base::string16 result_text_;
ui::CompositionText composition_;
// The current text input type used to indicates if |context_| and
// |context_simple_| are focused or not.
TextInputType text_input_type_;
// Indicates if currently in sync mode when handling a key event.
// This is used in OnXXX callbacks from GTK IM module.
bool is_sync_mode_;
// Indicates if the composition text is changed or deleted.
bool composition_changed_;
// If it's true then all input method result received before the next key
// event will be discarded.
bool suppress_next_result_;
// Used for making callbacks.
base::WeakPtrFactory<InputMethodAuraLinux> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(InputMethodAuraLinux);
};
} // namespace ui
#endif // UI_BASE_IME_INPUT_METHOD_AURALINUX_H_