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// Copyright (c) 2012 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_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_IBUS_H_
#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_IBUS_H_
#include <map>
#include <string>
#include <vector>
#include "base/memory/weak_ptr.h"
#include "chrome/browser/chromeos/input_method/input_method_engine.h"
#include "ui/base/ime/chromeos/ibus_bridge.h"
namespace chromeos {
class IBusText;
namespace input_method {
class CandidateWindow;
struct InputMethodProperty;
struct KeyEventHandle;
} // namespace input_method
class InputMethodEngineIBus : public InputMethodEngine,
public IBusEngineHandlerInterface {
public:
InputMethodEngineIBus();
virtual ~InputMethodEngineIBus();
void Initialize(
InputMethodEngine::Observer* observer,
const char* engine_name,
const char* extension_id,
const char* engine_id,
const char* description,
const std::vector<std::string>& languages,
const std::vector<std::string>& layouts,
const GURL& options_page,
const GURL& input_view,
std::string* error);
// InputMethodEngine overrides.
virtual void StartIme() OVERRIDE;
virtual bool SetComposition(int context_id,
const char* text,
int selection_start,
int selection_end,
int cursor,
const std::vector<SegmentInfo>& segments,
std::string* error) OVERRIDE;
virtual bool ClearComposition(int context_id, std::string* error) OVERRIDE;
virtual bool CommitText(int context_id, const char* text,
std::string* error) OVERRIDE;
virtual const CandidateWindowProperty&
GetCandidateWindowProperty() const OVERRIDE;
virtual void SetCandidateWindowProperty(
const CandidateWindowProperty& property) OVERRIDE;
virtual bool SetCandidateWindowVisible(bool visible,
std::string* error) OVERRIDE;
virtual void SetCandidateWindowAuxText(const char* text) OVERRIDE;
virtual void SetCandidateWindowAuxTextVisible(bool visible) OVERRIDE;
virtual bool SetCandidates(int context_id,
const std::vector<Candidate>& candidates,
std::string* error) OVERRIDE;
virtual bool SetCursorPosition(int context_id, int candidate_id,
std::string* error) OVERRIDE;
virtual bool SetMenuItems(const std::vector<MenuItem>& items) OVERRIDE;
virtual bool UpdateMenuItems(const std::vector<MenuItem>& items) OVERRIDE;
virtual bool IsActive() const OVERRIDE;
virtual void KeyEventDone(input_method::KeyEventHandle* key_data,
bool handled) OVERRIDE;
virtual bool DeleteSurroundingText(int context_id,
int offset,
size_t number_of_chars,
std::string* error) OVERRIDE;
// IBusEngineHandlerInterface overrides.
virtual void FocusIn(ibus::TextInputType text_input_type) OVERRIDE;
virtual void FocusOut() OVERRIDE;
virtual void Enable() OVERRIDE;
virtual void Disable() OVERRIDE;
virtual void PropertyActivate(const std::string& property_name) OVERRIDE;
virtual void PropertyShow(const std::string& property_name) OVERRIDE;
virtual void PropertyHide(const std::string& property_name) OVERRIDE;
virtual void SetCapability(IBusCapability capability) OVERRIDE;
virtual void Reset() OVERRIDE;
virtual void ProcessKeyEvent(uint32 keysym, uint32 keycode, uint32 state,
const KeyEventDoneCallback& callback) OVERRIDE;
virtual void CandidateClicked(uint32 index, ibus::IBusMouseButton button,
uint32 state) OVERRIDE;
virtual void SetSurroundingText(const std::string& text, uint32 cursor_pos,
uint32 anchor_pos) OVERRIDE;
private:
// Converts MenuItem to InputMethodProperty.
void MenuItemToProperty(const MenuItem& item,
input_method::InputMethodProperty* property);
// Registers the engine component.
void RegisterComponent();
// Called when the IBusBrige executes CreateEngine with
// corresponding engine id.
void CreateEngineHandler();
// True if the current context has focus.
bool focused_;
// True if this engine is active.
bool active_;
// ID that is used for the current input context. False if there is no focus.
int context_id_;
// Next id that will be assigned to a context.
int next_context_id_;
// This IME ID in Chrome Extension.
std::string engine_id_;
// This IME ID in ibus.
std::string ibus_id_;
// The current auxialy text and it's visiblity.
scoped_ptr<IBusText> aux_text_;
bool aux_text_visible_;
// Pointer to the object recieving events for this IME.
InputMethodEngine::Observer* observer_;
// The current preedit text, and it's cursor position.
scoped_ptr<IBusText> preedit_text_;
int preedit_cursor_;
// The current candidate window.
scoped_ptr<input_method::CandidateWindow> candidate_window_;
// The current candidate window property.
CandidateWindowProperty candidate_window_property_;
// Indicates whether the candidate window is visible.
bool window_visible_;
// Mapping of candidate index to candidate id.
std::vector<int> candidate_ids_;
// Mapping of candidate id to index.
std::map<int, int> candidate_indexes_;
// Used for making callbacks.
base::WeakPtrFactory<InputMethodEngineIBus> weak_ptr_factory_;
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_IBUS_H_
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