/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */
#ifndef __com_sun_star_i18n_XBreakIterator_idl__
#define __com_sun_star_i18n_XBreakIterator_idl__

#include <com/sun/star/lang/Locale.idl>
#include <com/sun/star/i18n/LineBreakUserOptions.idl>
#include <com/sun/star/i18n/LineBreakHyphenationOptions.idl>
#include <com/sun/star/i18n/LineBreakResults.idl>
#include <com/sun/star/i18n/Boundary.idl>


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.
        CharacterIteratorMode can be cell based or
        character based. A cell is made of more than one character.

        @param aText
            The input text.

        @param nStartPos
            The start index in aText.

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

        @param nCharacterIteratorMode
            A constant from CharacterIteratorMode

        @param nCount
            Number of characters to traverse, it should not be less than 0.
            If you want to traverse in the opposite direction use
            XBreakIterator::previousCharacters() instead.

        @param nDone
            Out parameter to receive the number of cells/Unicode characters
            traversed.
     */
    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.
        CharacterIteratorMode can be cell based or
        character based. A cell is made of more than one character.

        @param aText
            The input text.

        @param nStartPos
            The start index in aText.

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

        @param nCharacterIteratorMode
            A constant from CharacterIteratorMode

        @param nCount
            Number of characters to traverse, it should not be less than 0.
            If you want to traverse in the opposite direction use
            XBreakIterator::nextCharacters() instead.

        @param nDone
            Out parameter to receive the number of cells/Unicode characters
            traversed.

     */
    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 aText
            The input text.

        @param nStartPos
            The start index in aText.

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

        @param nWordType
            One of WordType, specifies the type of
            traveling.

        @returns
            The Boundary 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 aText
            The input text.

        @param nStartPos
            The start index in aText.

        @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
            Boundary::endPos() and the position after the
            Asian character (i.e. the space character) in
            Boundary::startPos(). 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 WordType, specifies the type of
            traveling.

        @returns
            The Boundary 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 aText
            The input text.

        @param nPos
            The start index in aText.

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

        @param nWordType
            One of WordType.

        @param bPreferForward
            If `TRUE`, nPos should be considered the start of the next
            word and search proceeds forwards.
            If `FALSE`, nPos should be considered the end of the
            current word, and search proceeds backwards.

        @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 WordType of the word that starts at
        position <em>nPos</em>.

        <p> This method is mis-defined, since WordType
        is not an attribute of a word, but a way to break words,
        like excluding or including tail spaces for spell checker
        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.

        @param aText
            The input text.

        @param nStartPos
            The start index in aText.

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

        @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.

        @param aText
            The input text.

        @param nStartPos
            The start index in aText.

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

        @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 aText
            The input text.

        @param nStartPos
            The start index in aText.

        @param aLocale
            The locale of the character preceding <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
            LineBreakResults 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 LineBreakResults contain the break
            position of the line, BreakType and
            com::sun::star::linguistic2::XHyphenatedWord
     */
    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 aText
            The input text.

        @param nStartPos
            The start index in aText.

        @param nScriptType
            One of ScriptType.

        @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 aText
            The input text.

        @param nStartPos
            The start index in aText.

        @param nScriptType
            One of ScriptType.

        @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 aText
            The input text.

        @param nStartPos
            The start index in aText.

        @param nScriptType
            One of ScriptType.

        @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 aText
            The input text.

        @param nStartPos
            The start index in aText.

        @param nScriptType
            One of ScriptType.

        @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>.

        @param aText
            The input text.

        @param nPos
            The index in aText.

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

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

        @param aText
            The input text.

        @param nStartPos
            The start index in aText.

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

        @param nCharType
            One of CharType

        @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 aText
            The input text.

        @param nStartPos
            The start index in aText.

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

        @param nCharType
            One of CharType

        @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 aText
            The input text.

        @param nStartPos
            The start index in aText.

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

        @param nCharType
            One of CharType

        @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 aText
            The input text.

        @param nStartPos
            The start index in aText.

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

        @param nCharType
            One of CharType

        @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

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