Example usage for org.apache.poi.hwpf.model ListData getLevels

Introduction

In this page you can find the example usage for org.apache.poi.hwpf.model ListData getLevels.

Prototype

public ListLevel[] getLevels() 

Source Link

Usage

From source file:org.apache.tika.parser.microsoft.ListManager.java

License:Apache License

/**
 * Get the formatted number for a given paragraph
 * <p/>//from   ww  w.j  a v a 2s . co  m
 * <p><em>Note:</em> This only works correctly if called subsequently for <em>all</em> paragraphs in a valid selection (main document, text field, ...) which are part of a list.</p>
 *
 * @param paragraph list paragraph to process
 * @return String which represents the numbering of this list paragraph; never {@code null}, can be empty string, though, 
 *        if something goes wrong in getList()
 * @throws IllegalArgumentException If the given paragraph is {@code null} or is not part of a list
 */
public String getFormattedNumber(final Paragraph paragraph) {
    if (paragraph == null)
        throw new IllegalArgumentException("Given paragraph cannot be null.");
    if (!paragraph.isInList())
        throw new IllegalArgumentException("Can only process list paragraphs.");
    //lsid is equivalent to docx's abnum
    //ilfo is equivalent to docx's num
    int currAbNumId = -1;
    try {
        currAbNumId = paragraph.getList().getLsid();
    } catch (NoSuchElementException e) {
        //somewhat frequent exception when initializing HWPFList
        return "";
    } catch (IllegalArgumentException e) {
        return "";
    } catch (NullPointerException e) {
        return "";
    }

    int currNumId = paragraph.getIlfo();
    ParagraphLevelCounter lc = listLevelMap.get(currAbNumId);
    LevelTuple[] overrideTuples = overrideTupleMap.get(currNumId);

    if (lc == null) {
        ListData listData = listTables.getListData(paragraph.getList().getLsid());
        LevelTuple[] levelTuples = new LevelTuple[listData.getLevels().length];
        for (int i = 0; i < listData.getLevels().length; i++) {
            levelTuples[i] = buildTuple(i, listData.getLevels()[i]);
        }
        lc = new ParagraphLevelCounter(levelTuples);
    }
    if (overrideTuples == null) {
        overrideTuples = buildOverrideTuples(paragraph, lc.getNumberOfLevels());
    }
    String formattedString = lc.incrementLevel(paragraph.getIlvl(), overrideTuples);

    listLevelMap.put(currAbNumId, lc);
    overrideTupleMap.put(currNumId, overrideTuples);
    return formattedString;
}

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