poi/poi/src/main/java/org/apache/poi/ss/usermodel/TableStyle.java

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   this work for additional information regarding copyright ownership.
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package org.apache.poi.ss.usermodel;

/**
 * Data table style definition.  Includes style elements for various table components.
 * Any number of style elements may be represented, and any cell may be styled by
 * multiple elements.  The order of elements in {@link TableStyleType} defines precedence.
 *
 * @since 3.17 beta 1
 */
public interface TableStyle {

    /**
     * @return name (may be a built-in name)
     */
    String getName();

    /**
     * Some clients may care where in the table style list this definition came from, so we'll track it.
     * The spec only references these by name, unlike Dxf records, which these definitions reference by index
     * (XML definition order).  Nice of MS to be consistent when defining the ECMA standard.
     * Use org.apache.poi.xssf.usermodel.XSSFBuiltinTableStyle.isBuiltinStyle(TableStyle) to determine whether the index is for a built-in style or explicit user style
     * @return index from org.apache.poi.xssf.model.StylesTable.getExplicitTableStyle(String) or org.apache.poi.xssf.usermodel.XSSFBuiltinTableStyle.ordinal()
     */
    int getIndex();

    /**
     *
     * @return true if this is a built-in style defined in the OOXML specification, false if it is a user style
     */
    boolean isBuiltin();

    /**
     * @return style definition for the given type, or null if not defined in this style.
     */
    DifferentialStyleProvider getStyle(TableStyleType type);
}