trunk/src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFMasterSheet.java

/* ====================================================================
   Licensed to the Apache Software Foundation (ASF) under one or more
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   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

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.poi.hslf.usermodel;

import org.apache.poi.hslf.record.SheetContainer;
import org.apache.poi.hslf.model.textproperties.TextProp;
import org.apache.poi.sl.usermodel.MasterSheet;

/**
 * The superclass of all master sheets - Slide masters, Notes masters, etc.
 *
 * For now it's empty. When we understand more about masters in ppt we will add the common functionality here.
 *
 * @author Yegor Kozlov
 */
public abstract class HSLFMasterSheet extends HSLFSheet implements MasterSheet<HSLFShape,HSLFTextParagraph> {
    public HSLFMasterSheet(SheetContainer container, int sheetNo){
        super(container, sheetNo);
    }

    /**
     * Pickup a style attribute from the master.
     * This is the "workhorse" which returns the default style attrubutes.
     */
    public abstract TextProp getStyleAttribute(int txtype, int level, String name, boolean isCharacter) ;


    /**
     * Checks if the shape is a placeholder.
     * (placeholders aren't normal shapes, they are visible only in the Edit Master mode)
     *
     *
     * @return true if the shape is a placeholder
     */
    public static boolean isPlaceholder(HSLFShape shape){
        if(!(shape instanceof HSLFTextShape)) return false;

        HSLFTextShape tx = (HSLFTextShape)shape;
        return tx.getPlaceholderAtom() != null;
    }
}