/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: XBreakIterator.idl,v $
 *
 *  $Revision: 1.15 $
 *
 *  last change: $Author: rt $ $Date: 2005/09/08 01:54:50 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/
#ifndef __com_sun_star_i18n_XBreakIterator_idl__
#define __com_sun_star_i18n_XBreakIterator_idl__

#ifndef __com_sun_star_lang_Locale_idl__
#include <com/sun/star/lang/Locale.idl>
#endif

#ifndef __com_sun_star_i18n_LineBreakUserOptions_idl__
#include <com/sun/star/i18n/LineBreakUserOptions.idl>
#endif

#ifndef __com_sun_star_i18n_LineBreakHyphenationOptions_idl__
#include <com/sun/star/i18n/LineBreakHyphenationOptions.idl>
#endif

#ifndef __com_sun_star_i18n_LineBreakResults_idl__
#include <com/sun/star/i18n/LineBreakResults.idl>
#endif

#ifndef __com_sun_star_i18n_Boundary_idl__
#include <com/sun/star/i18n/Boundary.idl>
#endif

//============================================================================

module com {  module sun {  module star {  module i18n {

//============================================================================

/** 
    contains the base routines for iteration in Unicode string. Iterates over
    characters, words, sentences and line breaks.

    <p> Assumption: StartPos is inclusive and EndPos is exclusive. </p>
 */

published interface XBreakIterator: com::sun::star::uno::XInterface
{
    //------------------------------------------------------------------------
    /** Traverses specified number of characters/cells in Text from 
        <em>nStartPos</em> forwards.
        <type>CharacterIteratorMode</type> can be cell based or
        character based. A cell is made of more than one character.

        @param nCount
            Number of characters to traverse, it should not be less than 0.
            If you want to traverse in the opposite direction use
            <member>XBreakIterator::previousCharacters()</member> instead.
     */
    long nextCharacters( [in] string aText, [in] long nStartPos,
                     [in] ::com::sun::star::lang::Locale aLocale,
                     [in] short nCharacterIteratorMode,
                     [in] long nCount, [out] long nDone );

    //------------------------------------------------------------------------
    /** Traverses specified number of characters/cells in Text from 
        <em>nStartPos</em> backwards.
        <type>CharacterIteratorMode</type> can be cell based or
        character based. A cell is made of more than one character.

        @param nCount
            Number of characters to traverse, it should not be less than 0.
            If you want to traverse in the opposite direction use
            <member>XBreakIterator::nextCharacters()</member> instead.
     */
    long previousCharacters( [in] string aText, [in] long nStartPos,
                     [in] ::com::sun::star::lang::Locale aLocale,
                     [in] short nCharacterIteratorMode,
                     [in] long nCount, [out] long nDone );

    //------------------------------------------------------------------------
    /** Traverses one word in Text from <em>nStartPos</em> forwards.

        @param nWordType
            One of <type>WordType</type>, specifies the type of
            travelling.

        @returns
            The <type>Boundary</type> of the found word. Normally used for
            CTRL-Right.
     */
    Boundary nextWord( [in] string aText, [in] long nStartPos,
                   [in] ::com::sun::star::lang::Locale aLocale,
                   [in] short nWordType);

    //------------------------------------------------------------------------
    /** Traverses one word in Text from <em>nStartPos</em> backwards.

        @param aLocale
            The locale of the character preceding <em>nStartPos</em>.

            <p> If the previous character is a space character and
            <em>nWordType</em> indicates spaces should be skipped, and
            if the first non-space character is an Asian character,
            then, since Asian word break needs language specific
            wordbreak dictionaries, the method will return -1 in
            <member>Boundary::endPos</member> and the position after the
            Asian character (i.e. the space character) in
            <member>Boundary::startPos</member>. The caller then has to
            call this method again with a correct <em>aLocale</em>
            referring to the Asian character, which is then the previous
            character of the space character where <em>nStartPos</em>
            points to. </p>

            <p> <b>Note</b> that the OpenOffice.org 1.0 / StarOffice 6.0
            / StarSuite 6.0 i18n framework doesn't behave like this and
            mixed Western/CJK text may lead to wrong word iteration.
            This is fixed in later versions. </p>

        @param nWordType
            One of <type>WordType</type>, specifies the type of
            travelling.

        @returns
            The <type>Boundary</type> of the found word. Normally used for
            CTRL-Left.
    */
    Boundary previousWord( [in] string aText, [in] long nStartPos,
                       [in] ::com::sun::star::lang::Locale aLocale,
                       [in] short nWordType);

    //------------------------------------------------------------------------
    /** Identifies StartPos and EndPos of current word.

        <p> If <em>nPos</em> is the boundary of a word, it is StartPos
        of one word and EndPos of previous word. In this situation, the
        outcome of the algorithm can be indeterminate. In this situation
        the <em>bPreferForward</em> flag is used. If bPreferForward ==
        <FALSE/>, <em>nPos</em> is considered to be the end of the word
        and we look backwards for beginning of word, otherwise
        <em>nPos</em> is considered to be the start of the next word and
        we look forwards for the end of the word. </p>

        @param nWordType
            One of <type>WordType</type>.

        @returns
            The Boundary of the current word.
    */
    Boundary getWordBoundary( [in] string aText, [in] long nPos,
                      [in] ::com::sun::star::lang::Locale aLocale,
                      [in] short nWordType,
                      [in] boolean bPreferForward );

    //------------------------------------------------------------------------
    /** @deprecated
        Get the <type>WordType</type> of the word that starts at
        position <em>nPos</em>.

        <p> This method is mis-defined, since <type>WordType</type>
        is not an attribute of a word, but a way to break words, 
        like excluding or including tail spaces for spellchecker 
        or cursor traveling. It returns 0 always.
        </p>
     */
    short getWordType( [in] string aText, [in] long nPos,
                   [in] ::com::sun::star::lang::Locale aLocale);

    //------------------------------------------------------------------------
    /** If a word starts at position <em>nPos</em>.

        <p> It is possible that both of this method 
        and following method <em>isEndWord</em> all return 
        <TRUE/>, since StartPos of a word is inclusive
        while EndPos of a word is exclusive.
        </p>

     */
    boolean isBeginWord( [in] string aText, [in] long nPos,
                     [in] ::com::sun::star::lang::Locale aLocale,
                     [in] short nWordType);

    //------------------------------------------------------------------------
    /** If a word ends at position <em>nPos</em>.
     */
    boolean isEndWord( [in] string aText, [in] long nPos,
                   [in] ::com::sun::star::lang::Locale aLocale,
                   [in] short nWordType);

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the start of a
        sentence.

        @returns
            The position where the sentence starts.
     */
    long beginOfSentence( [in] string aText, [in] long nStartPos,
                      [in] ::com::sun::star::lang::Locale aLocale );

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the end of a
        sentence.

        @returns
            The position where the sentence ends.
     */
    long endOfSentence( [in] string aText, [in] long nStartPos,
                    [in] ::com::sun::star::lang::Locale aLocale );

    //------------------------------------------------------------------------
    /** Calculate the line break position in the Text from the specified
        <em>nStartPos</em>.

        @param nMinBreakPos
            Defines a minimum break position for hyphenated line break.
            When the position for hyphenated line break is less than
            <em>nMinBreakPos</em>, break position in 
            <type>LineBreakResults</type> is set to -1.

        @param aHyphOptions
            Defines if the hyphenator is to be used.

        @param aUserOptions
            Defines how to handle hanging punctuations and forbidden
            characters at the start/end of a line.

        @returns
            The <type>LineBreakResults</type> contain the break 
            position of the line, <type>BreakType</type> and 
            <type scope="com::sun::star::linguistic2">XHyphenatedWord</type>
     */
    LineBreakResults getLineBreak( [in] string aText, [in] long nStartPos,
                    [in] ::com::sun::star::lang::Locale aLocale,
                    [in] long nMinBreakPos,
                    [in] LineBreakHyphenationOptions aHyphOptions,
                    [in] LineBreakUserOptions aUserOptions );

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the beginning of
        the specified script type.

        @param nScriptType
            One of <type>ScriptType</type>.

        @returns
            The position where the script type starts.
     */
    long beginOfScript( [in] string aText, [in] long nStartPos,
                    [in] short nScriptType );

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the end of the
        specified script type.

        @param nScriptType
            One of <type>ScriptType</type>.

        @returns
            The position where the script type ends.
     */
    long endOfScript( [in] string aText, [in] long nStartPos,
                  [in] short nScriptType );

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the next start of
        the specified script type.

        @param nScriptType
            One of <type>ScriptType</type>.

        @returns
            The position where the next script type starts.
     */
    long nextScript( [in] string aText, [in] long nStartPos,
                 [in] short nScriptType );

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the previous start
        of the specified script type.

        @param nScriptType
            One of <type>ScriptType</type>.

        @returns
            The position where the previous script type starts.
     */
    long previousScript( [in] string aText, [in] long nStartPos,
                      [in] short nScriptType );

    //------------------------------------------------------------------------
    /** Get the script type of the character at position <em>nPos</em>.

        @returns
            One of <type>ScriptType</type>.
     */
    short   getScriptType( [in] string aText, [in] long nPos);

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the beginning of
        the specified character type.

        @param nCharType
            One of <type>CharType</type>

        @returns
            The position where the character type starts
     */
    long beginOfCharBlock( [in] string aText, [in] long nStartPos,
                       [in] ::com::sun::star::lang::Locale aLocale,
                       [in] short nCharType );

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the end of the
        specified character type.

        @param nCharType
            One of <type>CharType</type>

        @returns
            The position where the character type ends.
     */
    long endOfCharBlock( [in] string aText, [in] long nStartPos,
                     [in] ::com::sun::star::lang::Locale aLocale,
                     [in] short nCharType );

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the next start of
        the specified character type.

        @param nCharType
            One of <type>CharType</type>

        @returns
            The position where the next character type starts.
     */
    long nextCharBlock( [in] string aText, [in] long nStartPos,
                    [in] ::com::sun::star::lang::Locale aLocale,
                    [in] short nCharType );

    //------------------------------------------------------------------------
    /** Traverses in Text from <em>nStartPos</em> to the previous start
        of the specified character type.

        @param nCharType
            One of <type>CharType</type>

        @returns
            The position where the previous character type starts.
     */
    long previousCharBlock ( [in] string aText, [in] long nStartPos,
                     [in] ::com::sun::star::lang::Locale aLocale,
                     [in] short nCharType );
};

//============================================================================
}; }; }; };
//============================================================================
#endif
