001: /**
002: * Copyright (c) 2003-2006, www.pdfbox.org
003: * All rights reserved.
004: *
005: * Redistribution and use in source and binary forms, with or without
006: * modification, are permitted provided that the following conditions are met:
007: *
008: * 1. Redistributions of source code must retain the above copyright notice,
009: * this list of conditions and the following disclaimer.
010: * 2. Redistributions in binary form must reproduce the above copyright notice,
011: * this list of conditions and the following disclaimer in the documentation
012: * and/or other materials provided with the distribution.
013: * 3. Neither the name of pdfbox; nor the names of its
014: * contributors may be used to endorse or promote products derived from this
015: * software without specific prior written permission.
016: *
017: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
018: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
019: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
020: * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
021: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
022: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
023: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
024: * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
025: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
026: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
027: *
028: * http://www.pdfbox.org
029: *
030: */package org.pdfbox.pdmodel.interactive.form;
031:
032: import java.io.IOException;
033:
034: import org.pdfbox.cos.COSArray;
035: import org.pdfbox.cos.COSBase;
036: import org.pdfbox.cos.COSDictionary;
037: import org.pdfbox.cos.COSName;
038: import org.pdfbox.cos.COSString;
039: import org.pdfbox.cos.COSInteger;
040:
041: /**
042: * A class for handling the PDF field as a choicefield.
043: *
044: * @author sug
045: * @version $Revision: 1.7 $
046: */
047: public class PDChoiceField extends PDVariableText {
048:
049: /**
050: * @see org.pdfbox.pdmodel.interactive.form.PDField#PDField(PDAcroForm,COSDictionary)
051: *
052: * @param theAcroForm The acroForm for this field.
053: * @param field The field for this choice field.
054: */
055: public PDChoiceField(PDAcroForm theAcroForm, COSDictionary field) {
056: super (theAcroForm, field);
057: }
058:
059: /**
060: * @see org.pdfbox.pdmodel.interactive.form.PDField#setValue(java.lang.String)
061: *
062: * @param optionValue The new value for this text field.
063: *
064: * @throws IOException If there is an error calculating the appearance stream or the value in not one
065: * of the existing options.
066: */
067: public void setValue(String optionValue) throws IOException {
068: int indexSelected = -1;
069: COSArray options = (COSArray) getDictionary()
070: .getDictionaryObject("Opt");
071: if (options.size() == 0) {
072: throw new IOException(
073: "Error: You cannot set a value for a choice field if there are no options.");
074: } else {
075: COSBase option = options.getObject(0);
076: if (option instanceof COSArray) {
077: for (int i = 0; i < options.size()
078: && indexSelected == -1; i++) {
079: COSArray keyValuePair = (COSArray) options.get(i);
080: COSString key = (COSString) keyValuePair
081: .getObject(0);
082: COSString value = (COSString) keyValuePair
083: .getObject(1);
084: if (optionValue.equals(key.getString())
085: || optionValue.equals(value.getString())) {
086: //have the parent draw the appearance stream with the value
087: super .setValue(value.getString());
088: //but then use the key as the V entry
089: getDictionary().setItem(
090: COSName.getPDFName("V"), key);
091: indexSelected = i;
092: }
093: }
094: } else {
095: for (int i = 0; i < options.size()
096: && indexSelected == -1; i++) {
097: COSString value = (COSString) options.get(i);
098: if (optionValue.equals(value.getString())) {
099: super .setValue(optionValue);
100: indexSelected = i;
101: }
102: }
103: }
104: }
105: if (indexSelected == -1) {
106: throw new IOException("Error: '" + optionValue
107: + "' was not an available option.");
108: } else {
109: COSArray indexArray = (COSArray) getDictionary()
110: .getDictionaryObject("I");
111: if (indexArray != null) {
112: indexArray.clear();
113: indexArray.add(new COSInteger(indexSelected));
114: }
115: }
116: }
117:
118: }
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