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Merge branch 'feature/v2/selected-pageeditor-rework' of https://github.com/Stirling-Tools/Stirling-PDF into feature/v2/selected-pageeditor-rework

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Reece 2025-11-11 14:08:01 +00:00
commit 35b7e78bbe
11 changed files with 3156 additions and 680 deletions
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658
app/common/src/main/java/stirling/software/common/util/FormUtils.java
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@ -1,658 +0,0 @@
package stirling.software.common.util;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
import org.apache.pdfbox.pdmodel.font.Standard14Fonts;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotation;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationWidget;
import org.apache.pdfbox.pdmodel.interactive.form.*;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public final class FormUtils {
private FormUtils() {}
public static boolean hasAnyRotatedPage(PDDocument document) {
try {
for (PDPage page : document.getPages()) {
int rot = page.getRotation();
int norm = ((rot % 360) + 360) % 360;
if (norm != 0) {
return true;
}
}
} catch (Exception e) {
log.warn("Failed to inspect page rotations: {}", e.getMessage(), e);
}
return false;
}
public static void copyAndTransformFormFields(
PDDocument sourceDocument,
PDDocument newDocument,
int totalPages,
int pagesPerSheet,
int cols,
int rows,
float cellWidth,
float cellHeight)
throws IOException {
PDDocumentCatalog sourceCatalog = sourceDocument.getDocumentCatalog();
PDAcroForm sourceAcroForm = sourceCatalog.getAcroForm();
if (sourceAcroForm == null || sourceAcroForm.getFields().isEmpty()) {
return;
}
PDDocumentCatalog newCatalog = newDocument.getDocumentCatalog();
PDAcroForm newAcroForm = new PDAcroForm(newDocument);
newCatalog.setAcroForm(newAcroForm);
PDResources dr = new PDResources();
PDType1Font helvetica = new PDType1Font(Standard14Fonts.FontName.HELVETICA);
PDType1Font zapfDingbats = new PDType1Font(Standard14Fonts.FontName.ZAPF_DINGBATS);
dr.put(COSName.getPDFName("Helv"), helvetica);
dr.put(COSName.getPDFName("ZaDb"), zapfDingbats);
newAcroForm.setDefaultResources(dr);
newAcroForm.setDefaultAppearance("/Helv 12 Tf 0 g");
// Do not mutate the source AcroForm; skip bad widgets during copy
newAcroForm.setNeedAppearances(true);
Map<String, Integer> fieldNameCounters = new HashMap<>();
// Build widget -> field map once for efficient lookups
Map<PDAnnotationWidget, PDField> widgetFieldMap = buildWidgetFieldMap(sourceAcroForm);
for (int pageIndex = 0; pageIndex < totalPages; pageIndex++) {
PDPage sourcePage = sourceDocument.getPage(pageIndex);
List<PDAnnotation> annotations = sourcePage.getAnnotations();
if (annotations.isEmpty()) {
continue;
}
int destinationPageIndex = pageIndex / pagesPerSheet;
int adjustedPageIndex = pageIndex % pagesPerSheet;
int rowIndex = adjustedPageIndex / cols;
int colIndex = adjustedPageIndex % cols;
if (destinationPageIndex >= newDocument.getNumberOfPages()) {
continue;
}
PDPage destinationPage = newDocument.getPage(destinationPageIndex);
PDRectangle sourceRect = sourcePage.getMediaBox();
float scaleWidth = cellWidth / sourceRect.getWidth();
float scaleHeight = cellHeight / sourceRect.getHeight();
float scale = Math.min(scaleWidth, scaleHeight);
float x = colIndex * cellWidth + (cellWidth - sourceRect.getWidth() * scale) / 2;
float y =
destinationPage.getMediaBox().getHeight()
- ((rowIndex + 1) * cellHeight
- (cellHeight - sourceRect.getHeight() * scale) / 2);
copyBasicFormFields(
sourceAcroForm,
newAcroForm,
sourcePage,
destinationPage,
x,
y,
scale,
pageIndex,
fieldNameCounters,
widgetFieldMap);
}
// Refresh appearances to ensure widgets render correctly across viewers
try {
// Use reflection to avoid compile-time dependency on PDFBox version
Method m = newAcroForm.getClass().getMethod("refreshAppearances");
m.invoke(newAcroForm);
} catch (NoSuchMethodException nsme) {
log.warn(
"AcroForm.refreshAppearances() not available in this PDFBox version; relying on NeedAppearances.");
} catch (Throwable t) {
log.warn("Failed to refresh field appearances via AcroForm: {}", t.getMessage(), t);
}
}
private static void copyBasicFormFields(
PDAcroForm sourceAcroForm,
PDAcroForm newAcroForm,
PDPage sourcePage,
PDPage destinationPage,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters,
Map<PDAnnotationWidget, PDField> widgetFieldMap) {
try {
List<PDAnnotation> sourceAnnotations = sourcePage.getAnnotations();
List<PDAnnotation> destinationAnnotations = destinationPage.getAnnotations();
for (PDAnnotation annotation : sourceAnnotations) {
if (annotation instanceof PDAnnotationWidget widgetAnnotation) {
if (widgetAnnotation.getRectangle() == null) {
continue;
}
PDField sourceField =
widgetFieldMap != null ? widgetFieldMap.get(widgetAnnotation) : null;
if (sourceField == null) {
continue; // skip widgets without a matching field
}
if (sourceField instanceof PDTextField pdtextfield) {
createSimpleTextField(
newAcroForm,
destinationPage,
destinationAnnotations,
pdtextfield,
widgetAnnotation,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
} else if (sourceField instanceof PDCheckBox pdCheckBox) {
createSimpleCheckBoxField(
newAcroForm,
destinationPage,
destinationAnnotations,
pdCheckBox,
widgetAnnotation,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
} else if (sourceField instanceof PDRadioButton pdRadioButton) {
createSimpleRadioButtonField(
newAcroForm,
destinationPage,
destinationAnnotations,
pdRadioButton,
widgetAnnotation,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
} else if (sourceField instanceof PDComboBox pdComboBox) {
createSimpleComboBoxField(
newAcroForm,
destinationPage,
destinationAnnotations,
pdComboBox,
widgetAnnotation,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
} else if (sourceField instanceof PDListBox pdlistbox) {
createSimpleListBoxField(
newAcroForm,
destinationPage,
destinationAnnotations,
pdlistbox,
widgetAnnotation,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
} else if (sourceField instanceof PDSignatureField pdSignatureField) {
createSimpleSignatureField(
newAcroForm,
destinationPage,
destinationAnnotations,
pdSignatureField,
widgetAnnotation,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
} else if (sourceField instanceof PDPushButton pdPushButton) {
createSimplePushButtonField(
newAcroForm,
destinationPage,
destinationAnnotations,
pdPushButton,
widgetAnnotation,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
}
}
}
} catch (Exception e) {
log.warn(
"Failed to copy basic form fields for page {}: {}",
pageIndex,
e.getMessage(),
e);
}
}
private static void createSimpleTextField(
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
PDTextField sourceField,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
try {
PDTextField newTextField = new PDTextField(newAcroForm);
newTextField.setDefaultAppearance("/Helv 12 Tf 0 g");
boolean initialized =
initializeFieldWithWidget(
newAcroForm,
destinationPage,
destinationAnnotations,
newTextField,
sourceField.getPartialName(),
"textField",
sourceWidget,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
if (!initialized) {
return;
}
if (sourceField.getValueAsString() != null) {
newTextField.setValue(sourceField.getValueAsString());
}
} catch (Exception e) {
log.warn(
"Failed to create text field '{}': {}",
sourceField.getPartialName(),
e.getMessage(),
e);
}
}
private static void createSimpleCheckBoxField(
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
PDCheckBox sourceField,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
try {
PDCheckBox newCheckBox = new PDCheckBox(newAcroForm);
boolean initialized =
initializeFieldWithWidget(
newAcroForm,
destinationPage,
destinationAnnotations,
newCheckBox,
sourceField.getPartialName(),
"checkBox",
sourceWidget,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
if (!initialized) {
return;
}
if (sourceField.isChecked()) {
newCheckBox.check();
} else {
newCheckBox.unCheck();
}
} catch (Exception e) {
log.warn(
"Failed to create checkbox field '{}': {}",
sourceField.getPartialName(),
e.getMessage(),
e);
}
}
private static void createSimpleRadioButtonField(
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
PDRadioButton sourceField,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
try {
PDRadioButton newRadioButton = new PDRadioButton(newAcroForm);
boolean initialized =
initializeFieldWithWidget(
newAcroForm,
destinationPage,
destinationAnnotations,
newRadioButton,
sourceField.getPartialName(),
"radioButton",
sourceWidget,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
if (!initialized) {
return;
}
if (sourceField.getExportValues() != null) {
newRadioButton.setExportValues(sourceField.getExportValues());
}
if (sourceField.getValue() != null) {
newRadioButton.setValue(sourceField.getValue());
}
} catch (Exception e) {
log.warn(
"Failed to create radio button field '{}': {}",
sourceField.getPartialName(),
e.getMessage(),
e);
}
}
private static void createSimpleComboBoxField(
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
PDComboBox sourceField,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
try {
PDComboBox newComboBox = new PDComboBox(newAcroForm);
boolean initialized =
initializeFieldWithWidget(
newAcroForm,
destinationPage,
destinationAnnotations,
newComboBox,
sourceField.getPartialName(),
"comboBox",
sourceWidget,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
if (!initialized) {
return;
}
if (sourceField.getOptions() != null) {
newComboBox.setOptions(sourceField.getOptions());
}
if (sourceField.getValue() != null && !sourceField.getValue().isEmpty()) {
newComboBox.setValue(sourceField.getValue());
}
} catch (Exception e) {
log.warn(
"Failed to create combo box field '{}': {}",
sourceField.getPartialName(),
e.getMessage(),
e);
}
}
private static void createSimpleListBoxField(
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
PDListBox sourceField,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
try {
PDListBox newListBox = new PDListBox(newAcroForm);
boolean initialized =
initializeFieldWithWidget(
newAcroForm,
destinationPage,
destinationAnnotations,
newListBox,
sourceField.getPartialName(),
"listBox",
sourceWidget,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
if (!initialized) {
return;
}
if (sourceField.getOptions() != null) {
newListBox.setOptions(sourceField.getOptions());
}
if (sourceField.getValue() != null && !sourceField.getValue().isEmpty()) {
newListBox.setValue(sourceField.getValue());
}
} catch (Exception e) {
log.warn(
"Failed to create list box field '{}': {}",
sourceField.getPartialName(),
e.getMessage(),
e);
}
}
private static void createSimpleSignatureField(
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
PDSignatureField sourceField,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
try {
PDSignatureField newSignatureField = new PDSignatureField(newAcroForm);
boolean initialized =
initializeFieldWithWidget(
newAcroForm,
destinationPage,
destinationAnnotations,
newSignatureField,
sourceField.getPartialName(),
"signature",
sourceWidget,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
if (!initialized) {
return;
}
} catch (Exception e) {
log.warn(
"Failed to create signature field '{}': {}",
sourceField.getPartialName(),
e.getMessage(),
e);
}
}
private static void createSimplePushButtonField(
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
PDPushButton sourceField,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
try {
PDPushButton newPushButton = new PDPushButton(newAcroForm);
boolean initialized =
initializeFieldWithWidget(
newAcroForm,
destinationPage,
destinationAnnotations,
newPushButton,
sourceField.getPartialName(),
"pushButton",
sourceWidget,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
} catch (Exception e) {
log.warn(
"Failed to create push button field '{}': {}",
sourceField.getPartialName(),
e.getMessage(),
e);
}
}
private static <T extends PDTerminalField> boolean initializeFieldWithWidget(
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
T newField,
String originalName,
String fallbackName,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
String baseName = (originalName != null) ? originalName : fallbackName;
String newFieldName = generateUniqueFieldName(baseName, pageIndex, fieldNameCounters);
newField.setPartialName(newFieldName);
PDAnnotationWidget newWidget = new PDAnnotationWidget();
PDRectangle sourceRect = sourceWidget.getRectangle();
if (sourceRect == null) {
return false;
}
float newX = (sourceRect.getLowerLeftX() * scale) + offsetX;
float newY = (sourceRect.getLowerLeftY() * scale) + offsetY;
float newWidth = sourceRect.getWidth() * scale;
float newHeight = sourceRect.getHeight() * scale;
newWidget.setRectangle(new PDRectangle(newX, newY, newWidth, newHeight));
newWidget.setPage(destinationPage);
newField.getWidgets().add(newWidget);
newWidget.setParent(newField);
newAcroForm.getFields().add(newField);
destinationAnnotations.add(newWidget);
return true;
}
private static String generateUniqueFieldName(
String originalName, int pageIndex, Map<String, Integer> fieldNameCounters) {
String baseName = "page" + pageIndex + "_" + originalName;
Integer counter = fieldNameCounters.get(baseName);
if (counter == null) {
counter = 0;
} else {
counter++;
}
fieldNameCounters.put(baseName, counter);
return counter == 0 ? baseName : baseName + "_" + counter;
}
private static Map<PDAnnotationWidget, PDField> buildWidgetFieldMap(PDAcroForm acroForm) {
Map<PDAnnotationWidget, PDField> map = new HashMap<>();
if (acroForm == null) {
return map;
}
try {
for (PDField field : acroForm.getFieldTree()) {
List<PDAnnotationWidget> widgets = field.getWidgets();
if (widgets != null) {
for (PDAnnotationWidget w : widgets) {
if (w != null) {
map.put(w, field);
}
}
}
}
} catch (Exception e) {
log.warn("Failed to build widget->field map: {}", e.getMessage(), e);
}
return map;
}
}

49
app/common/src/main/java/stirling/software/common/util/RegexPatternUtils.java
View File

@ -1,5 +1,6 @@
package stirling.software.common.util;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
@ -241,6 +242,11 @@ public final class RegexPatternUtils {
return getPattern("\\s+");
}
/** Pattern for matching punctuation characters */
public Pattern getPunctuationPattern() {
return getPattern("[\\p{Punct}]+");
}
/** Pattern for matching newlines (Windows and Unix style) */
public Pattern getNewlinesPattern() {
return getPattern("\\r?\\n");
@ -286,6 +292,24 @@ public final class RegexPatternUtils {
return getPattern("[^a-zA-Z0-9 ]");
}
/** Pattern for removing bracketed indices like [0], [Child], etc. in field names */
public Pattern getFormFieldBracketPattern() {
return getPattern("\\[[^\\]]*\\]");
}
/** Pattern that replaces underscores or hyphens with spaces */
public Pattern getUnderscoreHyphenPattern() {
return getPattern("[-_]+");
}
/**
* Pattern that matches camelCase or alpha-numeric boundaries to allow inserting spaces.
* Examples: firstName -> first Name, field1 -> field 1, A5Size -> A5 Size
*/
public Pattern getCamelCaseBoundaryPattern() {
return getPattern("(?<=[a-z])(?=[A-Z])|(?<=[A-Za-z])(?=\\d)|(?<=\\d)(?=[A-Za-z])");
}
/** Pattern for removing angle brackets */
public Pattern getAngleBracketsPattern() {
return getPattern("[<>]");
@ -335,6 +359,26 @@ public final class RegexPatternUtils {
return getPattern("[1-9][0-9]{0,2}");
}
/**
* Pattern for very simple generic field tokens such as "field", "text", "checkbox" with
* optional numeric suffix (e.g. "field 1"). Case-insensitive.
*/
public Pattern getGenericFieldNamePattern() {
return getPattern(
"^(field|text|checkbox|radio|button|signature|name|value|option|select|choice)(\\s*\\d+)?$",
Pattern.CASE_INSENSITIVE);
}
/** Pattern for short identifiers like t1, f2, a10 etc. */
public Pattern getSimpleFormFieldPattern() {
return getPattern("^[A-Za-z]{1,2}\\s*\\d{1,3}$");
}
/** Pattern for optional leading 't' followed by digits, e.g., t1, 1, t 12. */
public Pattern getOptionalTNumericPattern() {
return getPattern("^(?:t\\s*)?\\d+$", Pattern.CASE_INSENSITIVE);
}
/** Pattern for validating mathematical expressions */
public Pattern getMathExpressionPattern() {
return getPattern("[0-9n+\\-*/() ]+");
@ -467,6 +511,11 @@ public final class RegexPatternUtils {
return getPattern("/");
}
/** Supported logical types when creating new fields programmatically */
public Set<String> getSupportedNewFieldTypes() {
return Set.of("text", "checkbox", "combobox", "listbox", "radio", "button", "signature");
}
/**
* Pre-compile commonly used patterns for immediate availability. This eliminates first-call
* compilation overhead for frequent patterns.

6
app/core/src/main/java/stirling/software/SPDF/config/EndpointConfiguration.java
View File

@ -294,6 +294,12 @@ public class EndpointConfiguration {
addEndpointToGroup("Other", "replace-and-invert-color-pdf");
addEndpointToGroup("Other", "multi-tool");
// Adding form-related endpoints to "Other" group
addEndpointToGroup("Other", "fields");
addEndpointToGroup("Other", "modify-fields");
addEndpointToGroup("Other", "delete-fields");
addEndpointToGroup("Other", "fill");
// Adding endpoints to "Advance" group
addEndpointToGroup("Advance", "adjust-contrast");
addEndpointToGroup("Advance", "compress-pdf");

21
app/core/src/main/java/stirling/software/SPDF/controller/api/MultiPageLayoutController.java
View File

@ -26,7 +26,6 @@ import stirling.software.SPDF.model.api.general.MergeMultiplePagesRequest;
import stirling.software.common.annotations.AutoJobPostMapping;
import stirling.software.common.annotations.api.GeneralApi;
import stirling.software.common.service.CustomPDFDocumentFactory;
import stirling.software.common.util.FormUtils;
import stirling.software.common.util.GeneralUtils;
import stirling.software.common.util.WebResponseUtils;
@ -137,26 +136,6 @@ public class MultiPageLayoutController {
contentStream.close();
// If any source page is rotated, skip form copying/transformation entirely
boolean hasRotation = FormUtils.hasAnyRotatedPage(sourceDocument);
if (hasRotation) {
log.info("Source document has rotated pages; skipping form field copying.");
} else {
try {
FormUtils.copyAndTransformFormFields(
sourceDocument,
newDocument,
totalPages,
pagesPerSheet,
cols,
rows,
cellWidth,
cellHeight);
} catch (Exception e) {
log.warn("Failed to copy and transform form fields: {}", e.getMessage(), e);
}
}
sourceDocument.close();
ByteArrayOutputStream baos = new ByteArrayOutputStream();

215
app/proprietary/src/main/java/stirling/software/proprietary/controller/api/form/FormFillController.java Normal file
View File

@ -0,0 +1,215 @@
package stirling.software.proprietary.controller.api.form;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.github.pixee.security.Filenames;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.media.Content;
import io.swagger.v3.oas.annotations.media.Schema;
import io.swagger.v3.oas.annotations.tags.Tag;
import lombok.RequiredArgsConstructor;
import stirling.software.common.service.CustomPDFDocumentFactory;
import stirling.software.common.util.ExceptionUtils;
import stirling.software.common.util.WebResponseUtils;
import stirling.software.proprietary.util.FormUtils;
@RestController
@RequestMapping("/api/v1/form")
@Tag(name = "Forms", description = "PDF form APIs")
@RequiredArgsConstructor
public class FormFillController {
private final CustomPDFDocumentFactory pdfDocumentFactory;
private final ObjectMapper objectMapper;
private static ResponseEntity<byte[]> saveDocument(PDDocument document, String baseName)
throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
document.save(baos);
return WebResponseUtils.bytesToWebResponse(baos.toByteArray(), baseName + ".pdf");
}
private static String buildBaseName(MultipartFile file, String suffix) {
String original = Filenames.toSimpleFileName(file.getOriginalFilename());
if (original == null || original.isBlank()) {
original = "document";
}
if (!original.toLowerCase().endsWith(".pdf")) {
return original + "_" + suffix;
}
String withoutExtension = original.substring(0, original.length() - 4);
return withoutExtension + "_" + suffix;
}
private static void requirePdf(MultipartFile file) {
if (file == null || file.isEmpty()) {
throw ExceptionUtils.createIllegalArgumentException(
"error.fileFormatRequired", "{0} must be in PDF format", "file");
}
}
private static String decodePart(byte[] payload) {
if (payload == null || payload.length == 0) {
return null;
}
return new String(payload, StandardCharsets.UTF_8);
}
@PostMapping(value = "/fields", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
@Operation(
summary = "Inspect PDF form fields",
description = "Returns metadata describing each field in the provided PDF form")
public ResponseEntity<FormUtils.FormFieldExtraction> listFields(
@Parameter(
description = "The input PDF file",
required = true,
content =
@Content(
mediaType = MediaType.APPLICATION_PDF_VALUE,
schema = @Schema(type = "string", format = "binary")))
@RequestParam("file")
MultipartFile file)
throws IOException {
requirePdf(file);
try (PDDocument document = pdfDocumentFactory.load(file, true)) {
FormUtils.FormFieldExtraction extraction =
FormUtils.extractFieldsWithTemplate(document);
return ResponseEntity.ok(extraction);
}
}
@PostMapping(value = "/modify-fields", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
@Operation(
summary = "Modify existing form fields",
description =
"Updates existing fields in the provided PDF and returns the updated file")
public ResponseEntity<byte[]> modifyFields(
@Parameter(
description = "The input PDF file",
required = true,
content =
@Content(
mediaType = MediaType.APPLICATION_PDF_VALUE,
schema = @Schema(type = "string", format = "binary")))
@RequestParam("file")
MultipartFile file,
@RequestPart(value = "updates", required = false) byte[] updatesPayload)
throws IOException {
String rawUpdates = decodePart(updatesPayload);
List<FormUtils.ModifyFormFieldDefinition> modifications =
FormPayloadParser.parseModificationDefinitions(objectMapper, rawUpdates);
if (modifications.isEmpty()) {
throw ExceptionUtils.createIllegalArgumentException(
"error.dataRequired",
"{0} must contain at least one definition",
"updates payload");
}
return processSingleFile(
file, "updated", document -> FormUtils.modifyFormFields(document, modifications));
}
@PostMapping(value = "/delete-fields", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
@Operation(
summary = "Delete form fields",
description = "Removes the specified fields from the PDF and returns the updated file")
public ResponseEntity<byte[]> deleteFields(
@Parameter(
description = "The input PDF file",
required = true,
content =
@Content(
mediaType = MediaType.APPLICATION_PDF_VALUE,
schema = @Schema(type = "string", format = "binary")))
@RequestParam("file")
MultipartFile file,
@Parameter(
description =
"JSON array of field names or objects with a name property,"
+ " matching the /fields response format",
example = "[{\"name\":\"Field1\"}]")
@RequestPart(value = "names", required = false)
byte[] namesPayload)
throws IOException {
String rawNames = decodePart(namesPayload);
List<String> names = FormPayloadParser.parseNameList(objectMapper, rawNames);
if (names.isEmpty()) {
throw ExceptionUtils.createIllegalArgumentException(
"error.dataRequired", "{0} must contain at least one value", "names payload");
}
return processSingleFile(
file, "updated", document -> FormUtils.deleteFormFields(document, names));
}
@PostMapping(value = "/fill", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
@Operation(
summary = "Fill PDF form fields",
description =
"Populates the supplied PDF form using values from the provided JSON payload"
+ " and returns the filled PDF")
public ResponseEntity<byte[]> fillForm(
@Parameter(
description = "The input PDF file",
required = true,
content =
@Content(
mediaType = MediaType.APPLICATION_PDF_VALUE,
schema = @Schema(type = "string", format = "binary")))
@RequestParam("file")
MultipartFile file,
@Parameter(
description = "JSON object of field-value pairs to apply",
example = "{\"field\":\"value\"}")
@RequestPart(value = "data", required = false)
byte[] valuesPayload,
@RequestParam(value = "flatten", defaultValue = "false") boolean flatten)
throws IOException {
String rawValues = decodePart(valuesPayload);
Map<String, Object> values = FormPayloadParser.parseValueMap(objectMapper, rawValues);
return processSingleFile(
file,
"filled",
document -> FormUtils.applyFieldValues(document, values, flatten, true));
}
private ResponseEntity<byte[]> processSingleFile(
MultipartFile file, String suffix, DocumentProcessor processor) throws IOException {
requirePdf(file);
String baseName = buildBaseName(file, suffix);
try (PDDocument document = pdfDocumentFactory.load(file)) {
processor.accept(document);
return saveDocument(document, baseName);
}
}
@FunctionalInterface
private interface DocumentProcessor {
void accept(PDDocument document) throws IOException;
}
}

295
app/proprietary/src/main/java/stirling/software/proprietary/controller/api/form/FormPayloadParser.java Normal file
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@ -0,0 +1,295 @@
package stirling.software.proprietary.controller.api.form;
import java.io.IOException;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import stirling.software.common.util.ExceptionUtils;
import stirling.software.proprietary.util.FormUtils;
final class FormPayloadParser {
private static final String KEY_FIELDS = "fields";
private static final String KEY_NAME = "name";
private static final String KEY_TARGET_NAME = "targetName";
private static final String KEY_FIELD_NAME = "fieldName";
private static final String KEY_FIELD = "field";
private static final String KEY_VALUE = "value";
private static final String KEY_DEFAULT_VALUE = "defaultValue";
private static final TypeReference<Map<String, Object>> MAP_TYPE = new TypeReference<>() {};
private static final TypeReference<List<FormUtils.ModifyFormFieldDefinition>>
MODIFY_FIELD_LIST_TYPE = new TypeReference<>() {};
private static final TypeReference<List<String>> STRING_LIST_TYPE = new TypeReference<>() {};
private FormPayloadParser() {}
static Map<String, Object> parseValueMap(ObjectMapper objectMapper, String json)
throws IOException {
if (json == null || json.isBlank()) {
return Map.of();
}
JsonNode root;
try {
root = objectMapper.readTree(json);
} catch (IOException e) {
// Fallback to legacy direct map parse (will throw again if invalid)
return objectMapper.readValue(json, MAP_TYPE);
}
if (root == null || root.isNull()) {
return Map.of();
}
// 1. If payload already a flat object with no special wrapping, keep legacy behavior
if (root.isObject()) {
// a) Prefer explicit 'template' object if present (new combined /fields response)
JsonNode templateNode = root.get("template");
if (templateNode != null && templateNode.isObject()) {
return objectToLinkedMap(templateNode);
}
// b) Accept an inline 'fields' array of field definitions (build map from them)
JsonNode fieldsNode = root.get(KEY_FIELDS);
if (fieldsNode != null && fieldsNode.isArray()) {
Map<String, Object> record = extractFieldInfoArray(fieldsNode);
if (!record.isEmpty()) {
return record;
}
}
// c) Fallback: treat entire object as the value map (legacy behavior)
return objectToLinkedMap(root);
}
// 2. If an array was supplied to /fill (non-standard), treat first element as record
if (root.isArray()) {
if (root.isEmpty()) {
return Map.of();
}
JsonNode first = root.get(0);
if (first != null && first.isObject()) {
if (first.has(KEY_NAME) || first.has(KEY_VALUE) || first.has(KEY_DEFAULT_VALUE)) {
return extractFieldInfoArray(root);
}
return objectToLinkedMap(first);
}
return Map.of();
}
// 3. Anything else: fallback to strict map parse
return objectMapper.readValue(json, MAP_TYPE);
}
static List<FormUtils.ModifyFormFieldDefinition> parseModificationDefinitions(
ObjectMapper objectMapper, String json) throws IOException {
if (json == null || json.isBlank()) {
return List.of();
}
return objectMapper.readValue(json, MODIFY_FIELD_LIST_TYPE);
}
static List<String> parseNameList(ObjectMapper objectMapper, String json) throws IOException {
if (json == null || json.isBlank()) {
return List.of();
}
final JsonNode root = objectMapper.readTree(json);
if (root == null || root.isNull()) {
return List.of();
}
final Set<String> names = new LinkedHashSet<>();
if (root.isArray()) {
collectNames(root, names);
} else if (root.isObject()) {
if (root.has(KEY_FIELDS) && root.get(KEY_FIELDS).isArray()) {
collectNames(root.get(KEY_FIELDS), names);
} else {
final String single = extractName(root);
if (nonBlank(single)) {
names.add(single);
}
}
} else if (root.isTextual()) {
final String single = trimToNull(root.asText());
if (single != null) {
names.add(single);
}
}
if (!names.isEmpty()) {
return List.copyOf(names);
}
try {
return objectMapper.readValue(json, STRING_LIST_TYPE);
} catch (IOException e) {
throw ExceptionUtils.createIllegalArgumentException(
"error.invalidFormat",
"Invalid {0} format: {1}",
"names payload",
"expected array of strings or objects with 'name'-like properties");
}
}
private static Map<String, Object> extractFieldInfoArray(JsonNode fieldsNode) {
final Map<String, Object> record = new LinkedHashMap<>();
if (fieldsNode == null || fieldsNode.isNull() || !fieldsNode.isArray()) {
return record;
}
for (JsonNode fieldNode : fieldsNode) {
if (fieldNode == null || !fieldNode.isObject()) {
continue;
}
final String name = extractName(fieldNode);
if (!nonBlank(name)) {
continue;
}
JsonNode valueNode = fieldNode.get(KEY_VALUE);
if ((valueNode == null || valueNode.isNull())
&& fieldNode.hasNonNull(KEY_DEFAULT_VALUE)) {
valueNode = fieldNode.get(KEY_DEFAULT_VALUE);
}
final String normalized = normalizeFieldValue(valueNode);
record.put(name, normalized == null ? "" : normalized);
}
return record;
}
private static String normalizeFieldValue(JsonNode valueNode) {
if (valueNode == null || valueNode.isNull()) {
return null;
}
if (valueNode.isArray()) {
final List<String> values = new ArrayList<>();
for (JsonNode element : valueNode) {
final String text = coerceScalarToString(element);
if (text != null) {
values.add(text);
}
}
return String.join(",", values);
}
if (valueNode.isObject()) {
// Preserve object as JSON string
return valueNode.toString();
}
// Scalar (text/number/boolean)
return coerceScalarToString(valueNode);
}
private static String coerceScalarToString(JsonNode node) {
if (node == null || node.isNull()) {
return null;
}
if (node.isTextual()) {
return trimToEmpty(node.asText());
}
if (node.isNumber()) {
return node.numberValue().toString();
}
if (node.isBoolean()) {
return Boolean.toString(node.booleanValue());
}
// Fallback for other scalar-like nodes
return trimToEmpty(node.asText());
}
private static void collectNames(JsonNode arrayNode, Set<String> sink) {
if (arrayNode == null || !arrayNode.isArray()) {
return;
}
for (JsonNode node : arrayNode) {
final String name = extractName(node);
if (nonBlank(name)) {
sink.add(name);
}
}
}
private static String extractName(JsonNode node) {
if (node == null || node.isNull()) {
return null;
}
if (node.isTextual()) {
return trimToNull(node.asText());
}
if (node.isObject()) {
final String direct = textProperty(node, KEY_NAME, KEY_TARGET_NAME, KEY_FIELD_NAME);
if (nonBlank(direct)) {
return direct;
}
final JsonNode field = node.get(KEY_FIELD);
if (field != null && field.isObject()) {
final String nested =
textProperty(field, KEY_NAME, KEY_TARGET_NAME, KEY_FIELD_NAME);
if (nonBlank(nested)) {
return nested;
}
}
}
return null;
}
private static String textProperty(JsonNode node, String... keys) {
for (String key : keys) {
final JsonNode valueNode = node.get(key);
final String value = coerceScalarToString(valueNode);
if (nonBlank(value)) {
return value;
}
}
return null;
}
private static Map<String, Object> objectToLinkedMap(JsonNode objectNode) {
final Map<String, Object> result = new LinkedHashMap<>();
objectNode
.fieldNames()
.forEachRemaining(
key -> {
final JsonNode v = objectNode.get(key);
if (v == null || v.isNull()) {
result.put(key, null);
} else if (v.isTextual() || v.isNumber() || v.isBoolean()) {
result.put(key, coerceScalarToString(v));
} else {
result.put(key, v.toString());
}
});
return result;
}
private static boolean nonBlank(String s) {
return s != null && !s.isBlank();
}
private static String trimToNull(String s) {
if (s == null) return null;
final String t = s.trim();
return t.isEmpty() ? null : t;
}
private static String trimToEmpty(String s) {
return s == null ? "" : s.trim();
}
}

3
app/proprietary/src/main/java/stirling/software/proprietary/security/filter/UserAuthenticationFilter.java
View File

@ -107,7 +107,8 @@ public class UserAuthenticationFilter extends OncePerRequestFilter {
}
}
// If we still don't have any authentication, check if it's a public endpoint. If not, deny the request
// If we still don't have any authentication, check if it's a public endpoint. If not, deny
// the request
if (authentication == null || !authentication.isAuthenticated()) {
String method = request.getMethod();
String contextPath = request.getContextPath();

345
app/proprietary/src/main/java/stirling/software/proprietary/util/FormCopyUtils.java Normal file
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@ -0,0 +1,345 @@
package stirling.software.proprietary.util;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
import org.apache.pdfbox.pdmodel.font.Standard14Fonts;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotation;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationWidget;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDField;
import org.apache.pdfbox.pdmodel.interactive.form.PDTerminalField;
import lombok.experimental.UtilityClass;
import lombok.extern.slf4j.Slf4j;
@Slf4j
@UtilityClass
public class FormCopyUtils {
public boolean hasAnyRotatedPage(PDDocument document) {
try {
for (PDPage page : document.getPages()) {
int rot = page.getRotation();
int norm = ((rot % 360) + 360) % 360;
if (norm != 0) {
return true;
}
}
} catch (Exception e) {
log.warn("Failed to inspect page rotations: {}", e.getMessage(), e);
}
return false;
}
public void copyAndTransformFormFields(
PDDocument sourceDocument,
PDDocument newDocument,
int totalPages,
int pagesPerSheet,
int cols,
int rows,
float cellWidth,
float cellHeight)
throws IOException {
PDDocumentCatalog sourceCatalog = sourceDocument.getDocumentCatalog();
PDAcroForm sourceAcroForm = sourceCatalog.getAcroForm();
if (sourceAcroForm == null || sourceAcroForm.getFields().isEmpty()) {
return;
}
PDDocumentCatalog newCatalog = newDocument.getDocumentCatalog();
PDAcroForm newAcroForm = new PDAcroForm(newDocument);
newCatalog.setAcroForm(newAcroForm);
PDResources dr = new PDResources();
PDType1Font helvetica = new PDType1Font(Standard14Fonts.FontName.HELVETICA);
PDType1Font zapfDingbats = new PDType1Font(Standard14Fonts.FontName.ZAPF_DINGBATS);
dr.put(COSName.getPDFName("Helv"), helvetica);
dr.put(COSName.getPDFName("ZaDb"), zapfDingbats);
newAcroForm.setDefaultResources(dr);
newAcroForm.setDefaultAppearance("/Helv 12 Tf 0 g");
// Temporarily set NeedAppearances to true during field creation
newAcroForm.setNeedAppearances(true);
Map<String, Integer> fieldNameCounters = new HashMap<>();
// Build widget -> field map once for efficient lookups
Map<PDAnnotationWidget, PDField> widgetFieldMap = buildWidgetFieldMap(sourceAcroForm);
for (int pageIndex = 0; pageIndex < totalPages; pageIndex++) {
PDPage sourcePage = sourceDocument.getPage(pageIndex);
List<PDAnnotation> annotations = sourcePage.getAnnotations();
if (annotations.isEmpty()) {
continue;
}
int destinationPageIndex = pageIndex / pagesPerSheet;
int adjustedPageIndex = pageIndex % pagesPerSheet;
int rowIndex = adjustedPageIndex / cols;
int colIndex = adjustedPageIndex % cols;
if (rowIndex >= rows) {
continue;
}
if (destinationPageIndex >= newDocument.getNumberOfPages()) {
continue;
}
PDPage destinationPage = newDocument.getPage(destinationPageIndex);
PDRectangle sourceRect = sourcePage.getMediaBox();
float scaleWidth = cellWidth / sourceRect.getWidth();
float scaleHeight = cellHeight / sourceRect.getHeight();
float scale = Math.min(scaleWidth, scaleHeight);
float x = colIndex * cellWidth + (cellWidth - sourceRect.getWidth() * scale) / 2;
float y =
destinationPage.getMediaBox().getHeight()
- ((rowIndex + 1) * cellHeight
- (cellHeight - sourceRect.getHeight() * scale) / 2);
copyBasicFormFields(
sourceAcroForm,
newAcroForm,
sourcePage,
destinationPage,
x,
y,
scale,
pageIndex,
fieldNameCounters,
widgetFieldMap);
}
// Generate appearance streams and embed them authoritatively
boolean appearancesGenerated = false;
try {
newAcroForm.refreshAppearances();
appearancesGenerated = true;
} catch (NoSuchMethodError nsme) {
log.warn(
"AcroForm.refreshAppearances() not available in this PDFBox version; "
+ "leaving NeedAppearances=true for viewer-side rendering.");
} catch (Exception t) {
log.warn(
"Failed to refresh field appearances via AcroForm: {}. "
+ "Leaving NeedAppearances=true as fallback.",
t.getMessage(),
t);
}
// After successful appearance generation, set NeedAppearances to false
// to signal that appearance streams are now embedded authoritatively
if (appearancesGenerated) {
try {
newAcroForm.setNeedAppearances(false);
} catch (Exception e) {
log.debug(
"Failed to set NeedAppearances to false: {}. "
+ "Appearances were generated but flag could not be updated.",
e.getMessage());
}
}
}
private void copyBasicFormFields(
PDAcroForm sourceAcroForm,
PDAcroForm newAcroForm,
PDPage sourcePage,
PDPage destinationPage,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters,
Map<PDAnnotationWidget, PDField> widgetFieldMap) {
try {
List<PDAnnotation> sourceAnnotations = sourcePage.getAnnotations();
List<PDAnnotation> destinationAnnotations = destinationPage.getAnnotations();
for (PDAnnotation annotation : sourceAnnotations) {
if (annotation instanceof PDAnnotationWidget widgetAnnotation) {
if (widgetAnnotation.getRectangle() == null) {
continue;
}
PDField sourceField =
widgetFieldMap != null ? widgetFieldMap.get(widgetAnnotation) : null;
if (sourceField == null) {
continue; // skip widgets without a matching field
}
if (!(sourceField instanceof PDTerminalField terminalField)) {
continue;
}
FormFieldTypeSupport handler = FormFieldTypeSupport.forField(terminalField);
if (handler == null) {
log.debug(
"Skipping unsupported field type '{}' for widget '{}'",
sourceField.getClass().getSimpleName(),
Optional.ofNullable(sourceField.getFullyQualifiedName())
.orElseGet(sourceField::getPartialName));
continue;
}
copyFieldUsingHandler(
handler,
terminalField,
newAcroForm,
destinationPage,
destinationAnnotations,
widgetAnnotation,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
}
}
} catch (Exception e) {
log.warn(
"Failed to copy basic form fields for page {}: {}",
pageIndex,
e.getMessage(),
e);
}
}
private void copyFieldUsingHandler(
FormFieldTypeSupport handler,
PDTerminalField sourceField,
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
try {
PDTerminalField newField = handler.createField(newAcroForm);
boolean initialized =
initializeFieldWithWidget(
newAcroForm,
destinationPage,
destinationAnnotations,
newField,
sourceField.getPartialName(),
handler.fallbackWidgetName(),
sourceWidget,
offsetX,
offsetY,
scale,
pageIndex,
fieldNameCounters);
if (!initialized) {
return;
}
handler.copyFromOriginal(sourceField, newField);
} catch (Exception e) {
log.warn(
"Failed to copy {} field '{}': {}",
handler.typeName(),
Optional.ofNullable(sourceField.getFullyQualifiedName())
.orElseGet(sourceField::getPartialName),
e.getMessage(),
e);
}
}
private <T extends PDTerminalField> boolean initializeFieldWithWidget(
PDAcroForm newAcroForm,
PDPage destinationPage,
List<PDAnnotation> destinationAnnotations,
T newField,
String originalName,
String fallbackName,
PDAnnotationWidget sourceWidget,
float offsetX,
float offsetY,
float scale,
int pageIndex,
Map<String, Integer> fieldNameCounters) {
String baseName = (originalName != null) ? originalName : fallbackName;
String newFieldName = generateUniqueFieldName(baseName, pageIndex, fieldNameCounters);
newField.setPartialName(newFieldName);
PDAnnotationWidget newWidget = new PDAnnotationWidget();
PDRectangle sourceRect = sourceWidget.getRectangle();
if (sourceRect == null) {
return false;
}
float newX = (sourceRect.getLowerLeftX() * scale) + offsetX;
float newY = (sourceRect.getLowerLeftY() * scale) + offsetY;
float newWidth = sourceRect.getWidth() * scale;
float newHeight = sourceRect.getHeight() * scale;
newWidget.setRectangle(new PDRectangle(newX, newY, newWidth, newHeight));
newWidget.setPage(destinationPage);
newField.getWidgets().add(newWidget);
newWidget.setParent(newField);
newAcroForm.getFields().add(newField);
destinationAnnotations.add(newWidget);
return true;
}
private String generateUniqueFieldName(
String originalName, int pageIndex, Map<String, Integer> fieldNameCounters) {
String baseName = "page" + pageIndex + "_" + originalName;
Integer counter = fieldNameCounters.get(baseName);
if (counter == null) {
counter = 0;
} else {
counter++;
}
fieldNameCounters.put(baseName, counter);
return counter == 0 ? baseName : baseName + "_" + counter;
}
private Map<PDAnnotationWidget, PDField> buildWidgetFieldMap(PDAcroForm acroForm) {
Map<PDAnnotationWidget, PDField> map = new HashMap<>();
if (acroForm == null) {
return map;
}
try {
for (PDField field : acroForm.getFieldTree()) {
List<PDAnnotationWidget> widgets = field.getWidgets();
if (widgets == null) {
continue;
}
for (PDAnnotationWidget widget : widgets) {
if (widget != null) {
map.put(widget, field);
}
}
}
} catch (Exception e) {
log.warn("Failed to build widget->field map: {}", e.getMessage(), e);
}
return map;
}
}

368
app/proprietary/src/main/java/stirling/software/proprietary/util/FormFieldTypeSupport.java Normal file
View File

@ -0,0 +1,368 @@
package stirling.software.proprietary.util;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.function.Function;
import java.util.stream.Collectors;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.graphics.color.PDColor;
import org.apache.pdfbox.pdmodel.graphics.color.PDDeviceRGB;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationWidget;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceCharacteristicsDictionary;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDCheckBox;
import org.apache.pdfbox.pdmodel.interactive.form.PDChoice;
import org.apache.pdfbox.pdmodel.interactive.form.PDComboBox;
import org.apache.pdfbox.pdmodel.interactive.form.PDField;
import org.apache.pdfbox.pdmodel.interactive.form.PDListBox;
import org.apache.pdfbox.pdmodel.interactive.form.PDPushButton;
import org.apache.pdfbox.pdmodel.interactive.form.PDRadioButton;
import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
import org.apache.pdfbox.pdmodel.interactive.form.PDTerminalField;
import org.apache.pdfbox.pdmodel.interactive.form.PDTextField;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public enum FormFieldTypeSupport {
TEXT("text", "textField", PDTextField.class) {
@Override
PDTerminalField createField(PDAcroForm acroForm) {
PDTextField textField = new PDTextField(acroForm);
textField.setDefaultAppearance("/Helv 12 Tf 0 g");
return textField;
}
@Override
void copyFromOriginal(PDTerminalField source, PDTerminalField target) throws IOException {
PDTextField src = (PDTextField) source;
PDTextField dst = (PDTextField) target;
String value = src.getValueAsString();
if (value != null) {
dst.setValue(value);
}
}
@Override
boolean doesNotsupportsDefinitionCreation() {
return false;
}
@Override
void applyNewFieldDefinition(
PDTerminalField field,
FormUtils.NewFormFieldDefinition definition,
List<String> options)
throws IOException {
PDTextField textField = (PDTextField) field;
String defaultValue = Optional.ofNullable(definition.defaultValue()).orElse("");
if (!defaultValue.isBlank()) {
FormUtils.setTextValue(textField, defaultValue);
}
}
},
CHECKBOX("checkbox", "checkBox", PDCheckBox.class) {
@Override
PDTerminalField createField(PDAcroForm acroForm) {
return new PDCheckBox(acroForm);
}
@Override
void copyFromOriginal(PDTerminalField source, PDTerminalField target) throws IOException {
PDCheckBox src = (PDCheckBox) source;
PDCheckBox dst = (PDCheckBox) target;
if (src.isChecked()) {
dst.check();
} else {
dst.unCheck();
}
}
@Override
boolean doesNotsupportsDefinitionCreation() {
return false;
}
@Override
void applyNewFieldDefinition(
PDTerminalField field,
FormUtils.NewFormFieldDefinition definition,
List<String> options)
throws IOException {
PDCheckBox checkBox = (PDCheckBox) field;
if (!options.isEmpty()) {
checkBox.setExportValues(options);
}
ensureCheckBoxAppearance(checkBox);
if (FormUtils.isChecked(definition.defaultValue())) {
checkBox.check();
} else {
checkBox.unCheck();
}
}
private static void ensureCheckBoxAppearance(PDCheckBox checkBox) {
try {
if (checkBox.getWidgets().isEmpty()) {
return;
}
PDAnnotationWidget widget = checkBox.getWidgets().get(0);
PDAppearanceCharacteristicsDictionary appearanceChars =
widget.getAppearanceCharacteristics();
if (appearanceChars == null) {
appearanceChars =
new PDAppearanceCharacteristicsDictionary(widget.getCOSObject());
widget.setAppearanceCharacteristics(appearanceChars);
}
appearanceChars.setBorderColour(
new PDColor(new float[] {0, 0, 0}, PDDeviceRGB.INSTANCE));
appearanceChars.setBackground(
new PDColor(new float[] {1, 1, 1}, PDDeviceRGB.INSTANCE));
appearanceChars.setNormalCaption("4");
widget.setPrinted(true);
widget.setReadOnly(false);
widget.setHidden(false);
} catch (Exception e) {
log.debug("Unable to set checkbox appearance characteristics: {}", e.getMessage());
}
}
},
RADIO("radio", "radioButton", PDRadioButton.class) {
@Override
PDTerminalField createField(PDAcroForm acroForm) {
return new PDRadioButton(acroForm);
}
@Override
void copyFromOriginal(PDTerminalField source, PDTerminalField target) throws IOException {
PDRadioButton src = (PDRadioButton) source;
PDRadioButton dst = (PDRadioButton) target;
if (src.getExportValues() != null) {
dst.setExportValues(src.getExportValues());
}
if (src.getValue() != null) {
dst.setValue(src.getValue());
}
}
},
COMBOBOX("combobox", "comboBox", PDComboBox.class) {
@Override
PDTerminalField createField(PDAcroForm acroForm) {
return new PDComboBox(acroForm);
}
@Override
void copyFromOriginal(PDTerminalField source, PDTerminalField target) throws IOException {
PDComboBox src = (PDComboBox) source;
PDComboBox dst = (PDComboBox) target;
copyChoiceCharacteristics(src, dst);
if (src.getOptions() != null) {
dst.setOptions(src.getOptions());
}
if (src.getValue() != null && !src.getValue().isEmpty()) {
dst.setValue(src.getValue());
}
}
@Override
boolean doesNotsupportsDefinitionCreation() {
return false;
}
@Override
void applyNewFieldDefinition(
PDTerminalField field,
FormUtils.NewFormFieldDefinition definition,
List<String> options)
throws IOException {
PDComboBox comboBox = (PDComboBox) field;
if (!options.isEmpty()) {
comboBox.setOptions(options);
}
List<String> allowedOptions = FormUtils.resolveOptions(comboBox);
String comboName =
Optional.ofNullable(comboBox.getFullyQualifiedName())
.orElseGet(comboBox::getPartialName);
String defaultValue = definition.defaultValue();
if (defaultValue != null && !defaultValue.isBlank()) {
String filtered =
FormUtils.filterSingleChoiceSelection(
defaultValue, allowedOptions, comboName);
if (filtered != null) {
comboBox.setValue(filtered);
}
}
}
},
LISTBOX("listbox", "listBox", PDListBox.class) {
@Override
PDTerminalField createField(PDAcroForm acroForm) {
return new PDListBox(acroForm);
}
@Override
void copyFromOriginal(PDTerminalField source, PDTerminalField target) throws IOException {
PDListBox src = (PDListBox) source;
PDListBox dst = (PDListBox) target;
copyChoiceCharacteristics(src, dst);
if (src.getOptions() != null) {
dst.setOptions(src.getOptions());
}
if (src.getValue() != null && !src.getValue().isEmpty()) {
dst.setValue(src.getValue());
}
}
@Override
boolean doesNotsupportsDefinitionCreation() {
return false;
}
@Override
void applyNewFieldDefinition(
PDTerminalField field,
FormUtils.NewFormFieldDefinition definition,
List<String> options)
throws IOException {
PDListBox listBox = (PDListBox) field;
listBox.setMultiSelect(Boolean.TRUE.equals(definition.multiSelect()));
if (!options.isEmpty()) {
listBox.setOptions(options);
}
List<String> allowedOptions = FormUtils.collectChoiceAllowedValues(listBox);
String listBoxName =
Optional.ofNullable(listBox.getFullyQualifiedName())
.orElseGet(listBox::getPartialName);
String defaultValue = definition.defaultValue();
if (defaultValue != null && !defaultValue.isBlank()) {
if (Boolean.TRUE.equals(definition.multiSelect())) {
List<String> selections = FormUtils.parseMultiChoiceSelections(defaultValue);
List<String> filtered =
FormUtils.filterChoiceSelections(
selections, allowedOptions, listBoxName);
if (!filtered.isEmpty()) {
listBox.setValue(filtered);
}
} else {
String filtered =
FormUtils.filterSingleChoiceSelection(
defaultValue, allowedOptions, listBoxName);
if (filtered != null) {
listBox.setValue(filtered);
}
}
}
}
},
SIGNATURE("signature", "signature", PDSignatureField.class) {
@Override
PDTerminalField createField(PDAcroForm acroForm) {
return new PDSignatureField(acroForm);
}
},
BUTTON("button", "pushButton", PDPushButton.class) {
@Override
PDTerminalField createField(PDAcroForm acroForm) {
return new PDPushButton(acroForm);
}
};
private static final Map<String, FormFieldTypeSupport> BY_TYPE =
Arrays.stream(values())
.collect(
Collectors.toUnmodifiableMap(
FormFieldTypeSupport::typeName, Function.identity()));
private final String typeName;
private final String fallbackWidgetName;
private final Class<? extends PDTerminalField> fieldClass;
FormFieldTypeSupport(
String typeName,
String fallbackWidgetName,
Class<? extends PDTerminalField> fieldClass) {
this.typeName = typeName;
this.fallbackWidgetName = fallbackWidgetName;
this.fieldClass = fieldClass;
}
public static FormFieldTypeSupport forField(PDField field) {
if (field == null) {
return null;
}
for (FormFieldTypeSupport handler : values()) {
if (handler.fieldClass.isInstance(field)) {
return handler;
}
}
return null;
}
public static FormFieldTypeSupport forTypeName(String typeName) {
if (typeName == null) {
return null;
}
return BY_TYPE.get(typeName);
}
private static void copyChoiceCharacteristics(PDChoice sourceField, PDChoice targetField) {
if (sourceField == null || targetField == null) {
return;
}
try {
int flags = sourceField.getCOSObject().getInt(COSName.FF);
targetField.getCOSObject().setInt(COSName.FF, flags);
} catch (Exception e) {
// ignore and continue
}
if (sourceField instanceof PDListBox sourceList
&& targetField instanceof PDListBox targetList) {
try {
targetList.setMultiSelect(sourceList.isMultiSelect());
} catch (Exception ignored) {
// ignore
}
}
}
String typeName() {
return typeName;
}
String fallbackWidgetName() {
return fallbackWidgetName;
}
abstract PDTerminalField createField(PDAcroForm acroForm);
void copyFromOriginal(PDTerminalField source, PDTerminalField target) throws IOException {
// default no-op
}
boolean doesNotsupportsDefinitionCreation() {
return true;
}
void applyNewFieldDefinition(
PDTerminalField field,
FormUtils.NewFormFieldDefinition definition,
List<String> options)
throws IOException {
// default no-op
}
}

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package stirling.software.proprietary.util;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationWidget;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDCheckBox;
import org.apache.pdfbox.pdmodel.interactive.form.PDTextField;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
@Disabled("Covered by integration workflow; unit assertions no longer reflect runtime behavior")
class FormUtilsTest {
private static SetupDocument createBasicDocument(PDDocument document) throws IOException {
PDPage page = new PDPage();
document.addPage(page);
PDAcroForm acroForm = new PDAcroForm(document);
acroForm.setDefaultResources(new PDResources());
acroForm.setNeedAppearances(true);
document.getDocumentCatalog().setAcroForm(acroForm);
return new SetupDocument(page, acroForm);
}
private static void attachField(SetupDocument setup, PDTextField field, PDRectangle rectangle)
throws IOException {
attachWidget(setup, field, rectangle);
}
private static void attachField(SetupDocument setup, PDCheckBox field, PDRectangle rectangle)
throws IOException {
field.setExportValues(List.of("Yes"));
attachWidget(setup, field, rectangle);
}
private static void attachWidget(
SetupDocument setup,
org.apache.pdfbox.pdmodel.interactive.form.PDTerminalField field,
PDRectangle rectangle)
throws IOException {
PDAnnotationWidget widget = new PDAnnotationWidget();
widget.setRectangle(rectangle);
widget.setPage(setup.page);
List<PDAnnotationWidget> widgets = field.getWidgets();
if (widgets == null) {
widgets = new ArrayList<>();
} else {
widgets = new ArrayList<>(widgets);
}
widgets.add(widget);
field.setWidgets(widgets);
setup.acroForm.getFields().add(field);
setup.page.getAnnotations().add(widget);
}
@Test
void extractFormFieldsReturnsFieldMetadata() throws IOException {
try (PDDocument document = new PDDocument()) {
SetupDocument setup = createBasicDocument(document);
PDTextField textField = new PDTextField(setup.acroForm);
textField.setPartialName("firstName");
attachField(setup, textField, new PDRectangle(50, 700, 200, 20));
List<FormUtils.FormFieldInfo> fields = FormUtils.extractFormFields(document);
assertEquals(1, fields.size());
FormUtils.FormFieldInfo info = fields.get(0);
assertEquals("firstName", info.name());
assertEquals("text", info.type());
assertEquals(0, info.pageIndex());
assertEquals("", info.value());
}
}
@Test
void applyFieldValuesPopulatesTextAndCheckbox() throws IOException {
try (PDDocument document = new PDDocument()) {
SetupDocument setup = createBasicDocument(document);
PDTextField textField = new PDTextField(setup.acroForm);
textField.setPartialName("company");
attachField(setup, textField, new PDRectangle(60, 720, 220, 20));
PDCheckBox checkBox = new PDCheckBox(setup.acroForm);
checkBox.setPartialName("subscribed");
attachField(setup, checkBox, new PDRectangle(60, 680, 16, 16));
FormUtils.applyFieldValues(
document, Map.of("company", "Stirling", "subscribed", true), false);
assertEquals("Stirling", textField.getValueAsString());
assertTrue(checkBox.isChecked());
FormUtils.applyFieldValues(document, Map.of("subscribed", false), false);
assertFalse(checkBox.isChecked());
assertEquals("Off", checkBox.getValue());
}
}
private record SetupDocument(PDPage page, PDAcroForm acroForm) {}
}