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/* vim:set et ts=4 sts=4:
*
* ibus-pinyin - The Chinese PinYin engine for IBus
*
* Copyright (c) 2008-2010 Peng Huang <shawn.p.huang@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __PHONETIC_CONTEXT_H_
#define __PHONETIC_CONTEXT_H_
#include <string>
#include <vector>
#include "PyZyInputContext.h"
#include "PyZyConfig.h"
#include "PyZyPinyinArray.h"
#include "PyZyPhraseEditor.h"
#include "PyZySpecialPhraseTable.h"
namespace PyZy {
struct Preedit {
std::string selected_text;
std::string candidate_text;
std::string rest_text;
void clear () {
selected_text.clear ();
candidate_text.clear ();
rest_text.clear ();
}
};
class PhoneticContext : public InputContext {
public:
PhoneticContext (Config & config, PhoneticContext::Observer *observer);
virtual ~PhoneticContext (void);
virtual bool processKeyEvent (unsigned short key_event);
virtual void update (void);
virtual void commit (void) = 0;
virtual void reset (void);
/* inline functions */
virtual std::string selectedText (void) const { return m_preedit_text.selected_text; }
virtual std::string conversionText (void) const { return m_preedit_text.candidate_text; }
virtual std::string restText (void) const { return m_preedit_text.rest_text; }
virtual std::string auxiliaryText (void) const { return m_auxiliary_text; }
virtual std::vector<Candidate> candidates () const { return m_candidates; }
virtual std::string inputText () const { return m_text; }
unsigned int cursor () const { return m_cursor; }
unsigned int focusedCandidate () const { return m_focused_candidate; }
unsigned int page () const { return m_focused_candidate / m_config.pageSize (); }
protected:
virtual void updateLookupTable (void);
virtual gboolean updateSpecialPhrases (void);
gboolean selectCandidate (guint i);
gboolean selectCandidateInPage (guint i);
gboolean resetCandidate (guint i);
gboolean resetCandidateInPage (guint i);
gboolean focusCandidate (guint i);
gboolean focusCandidateInPage (guint i);
virtual void selectPage (guint i);
/* inline functions */
void updatePhraseEditor (void)
{
m_phrase_editor.update (m_pinyin);
}
const gchar * textAfterPinyin () const
{
return (const gchar *)m_text + m_pinyin_len;
}
const gchar * textAfterPinyin (guint i) const
{
g_assert (i <= m_pinyin.size ());
if ( G_UNLIKELY (i == 0))
return m_text;
i--;
return (const gchar *)m_text + m_pinyin[i].begin + m_pinyin[i].len;
}
const gchar * textAfterCursor () const
{
return (const gchar *)m_text + m_cursor;
}
/* pure virtual functions */
virtual gboolean insert (gint ch) = 0;
virtual gboolean removeCharBefore (void) = 0;
virtual gboolean removeCharAfter (void) = 0;
virtual gboolean removeWordBefore (void) = 0;
virtual gboolean removeWordAfter (void) = 0;
virtual gboolean moveCursorLeft (void) = 0;
virtual gboolean moveCursorRight (void) = 0;
virtual gboolean moveCursorLeftByWord (void) = 0;
virtual gboolean moveCursorRightByWord (void) = 0;
virtual gboolean moveCursorToBegin (void) = 0;
virtual gboolean moveCursorToEnd (void) = 0;
virtual void updateAuxiliaryText (void) = 0;
virtual void updatePreeditText (void) = 0;
/* variables */
Config &m_config;
guint m_cursor;
guint m_focused_candidate;
PinyinArray m_pinyin;
guint m_pinyin_len;
String m_buffer;
PhraseEditor m_phrase_editor;
std::vector<std::string> m_special_phrases;
std::string m_selected_special_phrase;
String m_text;
Preedit m_preedit_text;
PhoneticContext::Observer *m_observer;
std::vector<Candidate> m_candidates;
std::string m_auxiliary_text;
};
}; // namespace PyZy
#endif // __PHONETIC_CONTEXT_H_