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com.itextpdf.forms.form.renderer.SelectFieldComboBoxRenderer Maven / Gradle / Ivy
/*
This file is part of the iText (R) project.
Copyright (c) 1998-2024 Apryse Group NV
Authors: Apryse Software.
This program is offered under a commercial and under the AGPL license.
For commercial licensing, contact us at https://itextpdf.com/sales. For AGPL licensing, see below.
AGPL licensing:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see realChildRenderers = childRenderers;
childRenderers = new ArrayList<>();
childRenderers.add(minMaxWidthRenderer);
MinMaxWidth minMaxWidth = super.getMinMaxWidth();
childRenderers = realChildRenderers;
return minMaxWidth;
}
@Override
protected boolean allowLastYLineRecursiveExtraction() {
return true;
}
@Override
protected IRenderer createFlatRenderer() {
return createFlatRenderer(false);
}
@Override
protected void applyAcroField(DrawContext drawContext) {
final ComboBoxField comboBoxFieldModelElement = (ComboBoxField) this.modelElement;
final String name = getModelId();
final PdfDocument doc = drawContext.getDocument();
final Rectangle area = getOccupiedAreaBBox();
final PdfPage page = doc.getPage(occupiedArea.getPageNumber());
PdfFont font = getResolvedFont(doc);
final ChoiceFormFieldBuilder builder = new ChoiceFormFieldBuilder(doc, name).setWidgetRectangle(area)
.setFont(font)
.setGenericConformanceLevel(getGenericConformanceLevel(doc));
applyMargins(area, false);
final Map properties = FormFieldRendererUtil.removeProperties(this.modelElement);
modelElement.setProperty(Property.FONT_PROVIDER, this.getProperty(Property.FONT_PROVIDER));
modelElement.setProperty(Property.RENDERING_MODE, this.getProperty(Property.RENDERING_MODE));
setupBuilderValues(builder, comboBoxFieldModelElement);
final PdfChoiceFormField comboBoxField = builder.createComboBox();
comboBoxField.disableFieldRegeneration();
applyAccessibilityProperties(comboBoxField, doc);
final Background background = this.modelElement.getProperty(Property.BACKGROUND);
if (background != null) {
comboBoxField.getFirstFormAnnotation().setBackgroundColor(background.getColor());
}
BorderStyleUtil.applyBorderProperty(this, comboBoxField.getFirstFormAnnotation());
UnitValue fontSize = getFontSize();
if (fontSize != null) {
comboBoxField.setFontSize(fontSize.getValue());
}
SelectFieldItem selectedLabel = comboBoxFieldModelElement.getSelectedOption();
if (selectedLabel != null) {
comboBoxField.setValue(selectedLabel.getDisplayValue());
} else {
String exportValue = comboBoxFieldModelElement.getSelectedExportValue();
if (exportValue == null) {
RenderingMode renderingMode = comboBoxFieldModelElement.getProperty(
Property.RENDERING_MODE);
if (RenderingMode.HTML_MODE == renderingMode && comboBoxFieldModelElement.hasOptions()) {
comboBoxFieldModelElement.setSelected(0);
comboBoxField.setValue(comboBoxFieldModelElement.getSelectedExportValue());
}
} else {
comboBoxField.setValue(comboBoxFieldModelElement.getSelectedExportValue());
}
}
comboBoxField.getFirstFormAnnotation().setFormFieldElement(comboBoxFieldModelElement);
comboBoxField.enableFieldRegeneration();
PdfFormCreator.getAcroForm(doc, true).addField(comboBoxField, page);
FormFieldRendererUtil.reapplyProperties(this.modelElement, properties);
}
private UnitValue getFontSize() {
if (!this.hasProperty(Property.FONT_SIZE)) {
return null;
}
UnitValue fontSize = (UnitValue) this.getPropertyAsUnitValue(Property.FONT_SIZE);
if (!fontSize.isPointValue()) {
Logger logger = LoggerFactory.getLogger(SelectFieldComboBoxRenderer.class);
logger.error(MessageFormatUtil.format(IoLogMessageConstant.PROPERTY_IN_PERCENTS_NOT_SUPPORTED,
Property.FONT_SIZE));
}
return fontSize;
}
private IRenderer createFlatRenderer(boolean addAllOptionsToChildren) {
AbstractSelectField selectField = (AbstractSelectField) modelElement;
List options = selectField.getItems();
Div pseudoContainer = new Div();
for (SelectFieldItem option : options) {
pseudoContainer.add(option.getElement());
}
List allOptions;
IRenderer pseudoRendererSubTree = pseudoContainer.createRendererSubTree();
if (addAllOptionsToChildren) {
allOptions = getAllOptionsFlatElements(pseudoRendererSubTree);
} else {
allOptions = getSingleSelectedOptionFlatRenderer(pseudoRendererSubTree);
}
if (allOptions.isEmpty()) {
allOptions.add(createComboBoxOptionFlatElement());
}
pseudoContainer.getChildren().clear();
for (Paragraph option : allOptions) {
pseudoContainer.add(option);
}
String lang = getLang();
if (lang != null) {
AccessibilityProperties properties = pseudoContainer.getAccessibilityProperties();
if (properties.getLanguage() == null) {
properties.setLanguage(lang);
}
}
IRenderer rendererSubTree = pseudoContainer.createRendererSubTree();
return rendererSubTree;
}
private List getSingleSelectedOptionFlatRenderer(IRenderer optionsSubTree) {
List selectedOptionFlatRendererList = new ArrayList<>();
List selectedOptions = getOptionsMarkedSelected(optionsSubTree);
IRenderer selectedOption;
if (selectedOptions.isEmpty()) {
selectedOption = getFirstOption(optionsSubTree);
} else {
selectedOption = selectedOptions.get(selectedOptions.size() - 1);
}
if (selectedOption != null) {
String label = selectedOption.getProperty(FormProperty.FORM_FIELD_LABEL);
Paragraph p = createComboBoxOptionFlatElement(label, false);
processLangAttribute(p, selectedOption);
selectedOptionFlatRendererList.add(p);
} else {
ComboBoxField modelElement = (ComboBoxField) getModelElement();
SelectFieldItem selectedOptionItem = modelElement.getSelectedOption();
String label = modelElement.getSelectedExportValue();
if (selectedOptionItem != null) {
label = selectedOptionItem.getDisplayValue();
}
if (label != null) {
Paragraph p = createComboBoxOptionFlatElement(label, false);
p.setProperty(FormProperty.FORM_FIELD_SELECTED, true);
processLangAttribute(p, p.getRenderer());
selectedOptionFlatRendererList.add(p);
}
}
return selectedOptionFlatRendererList;
}
private IRenderer getFirstOption(IRenderer renderer) {
IRenderer firstOption = null;
for (IRenderer child : renderer.getChildRenderers()) {
if (isOptionRenderer(child)) {
firstOption = child;
break;
}
firstOption = getFirstOption(child);
if (firstOption != null) {
break;
}
}
return firstOption;
}
private List getAllOptionsFlatElements(IRenderer renderer) {
return getAllOptionsFlatElements(renderer, false);
}
private List getAllOptionsFlatElements(IRenderer renderer, boolean isInOptGroup) {
List options = new ArrayList<>();
for (IRenderer child : renderer.getChildRenderers()) {
if (isOptionRenderer(child)) {
String label = child.getProperty(FormProperty.FORM_FIELD_LABEL);
options.add(createComboBoxOptionFlatElement(label, isInOptGroup));
} else {
options.addAll(getAllOptionsFlatElements(child, isInOptGroup || isOptGroupRenderer(child)));
}
}
return options;
}
private void processLangAttribute(Paragraph optionFlatElement, IRenderer originalOptionRenderer) {
IPropertyContainer propertyContainer = originalOptionRenderer.getModelElement();
if (propertyContainer instanceof IAccessibleElement) {
String lang = ((IAccessibleElement) propertyContainer).getAccessibilityProperties().getLanguage();
AccessibilityProperties properties = ((IAccessibleElement) optionFlatElement).getAccessibilityProperties();
if (properties.getLanguage() == null) {
properties.setLanguage(lang);
}
}
}
private Paragraph createComboBoxOptionFlatElement() {
return createComboBoxOptionFlatElement(null, false);
}
private Paragraph createComboBoxOptionFlatElement(String label, boolean simulateOptGroupMargin) {
Paragraph paragraph = new Paragraph().setMargin(0);
if (simulateOptGroupMargin) {
paragraph.add("\u200d ");
}
if (label == null || label.isEmpty()) {
label = "\u00A0";
}
paragraph.add(label);
paragraph.setProperty(Property.OVERFLOW_X, OverflowPropertyValue.VISIBLE);
paragraph.setProperty(Property.OVERFLOW_Y, OverflowPropertyValue.VISIBLE);
paragraph.setFontColor(modelElement.getProperty(Property.FONT_COLOR));
UnitValue fontSize = modelElement.getProperty(Property.FONT_SIZE);
if (fontSize != null) {
paragraph.setFontSize(fontSize.getValue());
}
PdfFont font = getResolvedFont(null);
if (font != null) {
paragraph.setFont(font);
}
final float paddingTop = 0f;
final float paddingBottom = 0.75f;
final float paddingLeft = 1.5f;
float paddingRight = 1.5f;
if (!isFlatten()) {
final float extraPaddingChrome = 10f;
paddingRight += extraPaddingChrome;
}
paragraph.setPaddings(paddingTop, paddingRight, paddingBottom, paddingLeft);
return paragraph;
}
}
