Examples with COSArrayList com.tom_roush.pdfbox.pdmodel.common.COSArrayList used on opensource projects

Example 1 with COSArrayList

use of com.tom_roush.pdfbox.pdmodel.common.COSArrayList in project PdfBox-Android by TomRoush.

the class PDDocument method addSignature.

/**
 * This will add a signature to the document. If the 0-based page number in the options
 * parameter is smaller than 0 or larger than max, the nearest valid page number will be used
 * (i.e. 0 or max) and no exception will be thrown.
 * <p>
 * Only one signature may be added in a document. To sign several times,
 * load document, add signature, save incremental and close again.
 *
 * @param sigObject is the PDSignatureField model
 * @param signatureInterface is an interface whose implementation provides
 * signing capabilities. Can be null if external signing if used.
 * @param options signature options
 * @throws IOException if there is an error creating required fields
 * @throws IllegalStateException if one attempts to add several signature
 * fields.
 */
public void addSignature(PDSignature sigObject, SignatureInterface signatureInterface, SignatureOptions options) throws IOException {
    if (signatureAdded) {
        throw new IllegalStateException("Only one signature may be added in a document");
    }
    signatureAdded = true;
    // Reserve content
    // We need to reserve some space for the signature. Some signatures including
    // big certificate chain and we need enough space to store it.
    int preferredSignatureSize = options.getPreferredSignatureSize();
    if (preferredSignatureSize > 0) {
        sigObject.setContents(new byte[preferredSignatureSize]);
    } else {
        sigObject.setContents(new byte[SignatureOptions.DEFAULT_SIGNATURE_SIZE]);
    }
    // Reserve ByteRange, will be overwritten in COSWriter
    sigObject.setByteRange(RESERVE_BYTE_RANGE);
    signInterface = signatureInterface;
    // Create SignatureForm for signature and append it to the document
    // Get the first valid page
    int pageCount = getNumberOfPages();
    if (pageCount == 0) {
        throw new IllegalStateException("Cannot sign an empty document");
    }
    int startIndex = Math.min(Math.max(options.getPage(), 0), pageCount - 1);
    PDPage page = getPage(startIndex);
    // Get the AcroForm from the Root-Dictionary and append the annotation
    PDDocumentCatalog catalog = getDocumentCatalog();
    PDAcroForm acroForm = catalog.getAcroForm();
    catalog.getCOSObject().setNeedToBeUpdated(true);
    if (acroForm == null) {
        acroForm = new PDAcroForm(this);
        catalog.setAcroForm(acroForm);
    } else {
        acroForm.getCOSObject().setNeedToBeUpdated(true);
    }
    PDSignatureField signatureField = null;
    if (!(acroForm.getCOSObject().getDictionaryObject(COSName.FIELDS) instanceof COSArray)) {
        acroForm.getCOSObject().setItem(COSName.FIELDS, new COSArray());
    } else {
        COSArray fieldArray = (COSArray) acroForm.getCOSObject().getDictionaryObject(COSName.FIELDS);
        fieldArray.setNeedToBeUpdated(true);
        signatureField = findSignatureField(acroForm.getFieldIterator(), sigObject);
    }
    if (signatureField == null) {
        signatureField = new PDSignatureField(acroForm);
        // append the signature object
        signatureField.setValue(sigObject);
        // backward linking
        signatureField.getWidgets().get(0).setPage(page);
    } else {
        sigObject.getCOSObject().setNeedToBeUpdated(true);
    }
    // TODO This "overwrites" the settings of the original signature field which might not be intended by the user
    // better make it configurable (not all users need/want PDF/A but their own setting):
    // to conform PDF/A-1 requirement:
    // The /F key's Print flag bit shall be set to 1 and
    // its Hidden, Invisible and NoView flag bits shall be set to 0
    signatureField.getWidgets().get(0).setPrinted(true);
    // Set the AcroForm Fields
    List<PDField> acroFormFields = acroForm.getFields();
    acroForm.getCOSObject().setDirect(true);
    acroForm.setSignaturesExist(true);
    acroForm.setAppendOnly(true);
    boolean checkFields = checkSignatureField(acroForm.getFieldIterator(), signatureField);
    if (checkFields) {
        signatureField.getCOSObject().setNeedToBeUpdated(true);
    } else {
        acroFormFields.add(signatureField);
    }
    // Get the object from the visual signature
    COSDocument visualSignature = options.getVisualSignature();
    // Distinction of case for visual and non-visual signature
    if (visualSignature == null) {
        prepareNonVisibleSignature(signatureField);
        return;
    }
    prepareVisibleSignature(signatureField, acroForm, visualSignature);
    // Create Annotation / Field for signature
    List<PDAnnotation> annotations = page.getAnnotations();
    // Make /Annots a direct object to avoid problem if it is an existing indirect object:
    // it would not be updated in incremental save, and if we'd set the /Annots array "to be updated"
    // while keeping it indirect, Adobe Reader would claim that the document had been modified.
    page.setAnnotations(annotations);
    // take care that page and acroforms do not share the same array (if so, we don't need to add it twice)
    if (!(annotations instanceof COSArrayList && acroFormFields instanceof COSArrayList && ((COSArrayList<?>) annotations).toList().equals(((COSArrayList<?>) acroFormFields).toList()) && checkFields)) {
        PDAnnotationWidget widget = signatureField.getWidgets().get(0);
        // use check to prevent the annotation widget from appearing twice
        if (checkSignatureAnnotation(annotations, widget)) {
            widget.getCOSObject().setNeedToBeUpdated(true);
        } else {
            annotations.add(widget);
        }
    }
    page.getCOSObject().setNeedToBeUpdated(true);
}

Example 2 with COSArrayList

use of com.tom_roush.pdfbox.pdmodel.common.COSArrayList in project PdfBox-Android by TomRoush.

the class PDSeedValue method getLegalAttestation.

/**
 * (Optional, PDF 1.6) An array of text strings that specifying possible legal
 * attestations.
 *
 * @return the reasons that should be used by the signature handler
 */
public List<String> getLegalAttestation() {
    List<String> retval = null;
    COSArray fields = (COSArray) dictionary.getDictionaryObject(COSName.LEGAL_ATTESTATION);
    if (fields != null) {
        List<String> actuals = new ArrayList<String>();
        for (int i = 0; i < fields.size(); i++) {
            String element = fields.getString(i);
            if (element != null) {
                actuals.add(element);
            }
        }
        retval = new COSArrayList<String>(actuals, fields);
    }
    return retval;
}

Example 3 with COSArrayList

use of com.tom_roush.pdfbox.pdmodel.common.COSArrayList in project PdfBox-Android by TomRoush.

the class PDPage method getThreadBeads.

/**
 * This will get a list of PDThreadBead objects, which are article threads in the document. This
 * will return an empty list if there are no thread beads.
 *
 * @return A list of article threads on this page, never null. The returned list is backed by
 * the beads COSArray, so any adding or deleting in this list will change the document too.
 */
public List<PDThreadBead> getThreadBeads() {
    COSArray beads = (COSArray) page.getDictionaryObject(COSName.B);
    if (beads == null) {
        beads = new COSArray();
    }
    List<PDThreadBead> pdObjects = new ArrayList<PDThreadBead>();
    for (int i = 0; i < beads.size(); i++) {
        COSBase base = beads.getObject(i);
        PDThreadBead bead = null;
        // in some cases the bead is null
        if (base instanceof COSDictionary) {
            bead = new PDThreadBead((COSDictionary) base);
        }
        pdObjects.add(bead);
    }
    return new COSArrayList<PDThreadBead>(pdObjects, beads);
}

Example 4 with COSArrayList

use of com.tom_roush.pdfbox.pdmodel.common.COSArrayList in project PdfBox-Android by TomRoush.

the class PDDocumentCatalog method getThreads.

/**
 * Returns the document's article threads.
 *
 * @return a list containing all article threads.
 */
public List<PDThread> getThreads() {
    COSArray array = (COSArray) root.getDictionaryObject(COSName.THREADS);
    if (array == null) {
        array = new COSArray();
        root.setItem(COSName.THREADS, array);
    }
    List<PDThread> pdObjects = new ArrayList<PDThread>();
    for (int i = 0; i < array.size(); i++) {
        pdObjects.add(new PDThread((COSDictionary) array.getObject(i)));
    }
    return new COSArrayList<PDThread>(pdObjects, array);
}

Example 5 with COSArrayList

use of com.tom_roush.pdfbox.pdmodel.common.COSArrayList in project PdfBox-Android by TomRoush.

the class FDFField method getKids.

/**
 * This will get the list of kids. This will return a list of FDFField objects. This will return null if the
 * underlying list is null.
 *
 * @return The list of kids.
 */
public List<FDFField> getKids() {
    COSArray kids = (COSArray) field.getDictionaryObject(COSName.KIDS);
    List<FDFField> retval = null;
    if (kids != null) {
        List<FDFField> actuals = new ArrayList<FDFField>();
        for (int i = 0; i < kids.size(); i++) {
            actuals.add(new FDFField((COSDictionary) kids.getObject(i)));
        }
        retval = new COSArrayList<FDFField>(actuals, kids);
    }
    return retval;
}