pdpushbutton.java

非常有用的操作pdf文件的java源码

/**
 * Copyright (c) 2003, www.pdfbox.org
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
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 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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package org.pdfbox.pdmodel.interactive.form;

import org.pdfbox.cos.COSDictionary;
import org.pdfbox.cos.COSName;
import org.pdfbox.cos.COSString;

import java.io.IOException;

/**
 * A class for handling the PDF field as a PDPushButton.
 *
 * @author sug
 * @version $Revision: 1.3 $
 */
public class PDPushButton extends PDField
{

    /**
     * @see org.pdfbox.pdmodel.field.PDField#COSField(org.pdfbox.cos.COSDictionary)
     *
     * @param theAcroForm The acroForm for this field.
     * @param field The field for this push button.
     */
    public PDPushButton( PDAcroForm theAcroForm, COSDictionary field)
    {
        super(theAcroForm, field);
    }

    /**
     * @see as.interactive.pdf.form.cos.COSField#setValue(java.lang.String)
     *
     * @param value The new value for the field.
     *
     * @throws IOException If there is an error creating the appearance stream.
     */
    public void setValue(String value) throws IOException
    {
        COSString fieldValue = new COSString(value);
        getDictionary().setItem( COSName.getPDFName( "V" ), fieldValue );
        getDictionary().setItem( COSName.getPDFName( "DV" ), fieldValue );
    }
    
    /**
     * getValue gets the fields value to as a string.
     *
     * @return The string value of this field.
     *
     * @throws IOException If there is an error getting the value.
     */
    public String getValue() throws IOException
    {
        return getDictionary().getString( "V" );
    }
}