/*
 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
 */

/***************************************************************
 * GlassInputTextInfo
 *
 * A class encapsulating the composition string and result string
 * used in windows input method implementation.
 *
 */

#ifndef GLASSINPUTTEXTINFO_H
#define GLASSINPUTTEXTINFO_H

#include "common.h"
#include <new>
#include "ViewContainer.h"

class GlassInputTextInfo {
 public:
    GlassInputTextInfo(ViewContainer * const vc);

    int GetContextData(HIMC hIMC, const LPARAM flags);

    int GetCursorPosition() const;

    int GetCommittedTextLength() const;

    jstring GetText() const { return m_jtext; }

    int GetClauseInfo(int*& lpBndClauseW);
    int GetAttributeInfo(int*& lpBndAttrW, BYTE*& lpValAttrW);

    ~GlassInputTextInfo();
 private:
    ViewContainer * m_viewContainer;

    /* helper function to return a java string.*/
    static jstring MakeJavaString(JNIEnv* env, LPWSTR lpStrW, int cStrW);


    LPARAM m_flags;            /* The message LPARAM. */
    int m_cursorPosW;          /* the current cursor position of composition string */
    jstring m_jtext;           /* Composing string/result string or merged one */
    GlassInputTextInfo* m_pResultTextInfo; /* pointer to result string */

    int m_cStrW;            /* size of the current composition/result string */
    int m_cClauseW;         /* size of the clause */
    int m_cAttrW;           /* size of the attribute (composition only) */

    LPWSTR  m_lpStrW;       /* pointer to the current composition/result string */
    LPDWORD m_lpClauseW;    /* pointer to the clause information */
    LPBYTE  m_lpAttrW;      /* pointer to the attribute information (composition only) */

    /* GCS_XXX index for result string */
    static const DWORD GCS_INDEX[5];
};

#endif // GLASSINPUTTEXTINFO_H
