412 lines
16 KiB
TypeScript
412 lines
16 KiB
TypeScript
import PDFDocument from "../PDFDocument";
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import PDFField from "./PDFField";
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import PDFButton from "./PDFButton";
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import PDFCheckBox from "./PDFCheckBox";
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import PDFDropdown from "./PDFDropdown";
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import PDFOptionList from "./PDFOptionList";
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import PDFRadioGroup from "./PDFRadioGroup";
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import PDFSignature from "./PDFSignature";
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import PDFTextField from "./PDFTextField";
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import PDFFont from "../PDFFont";
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import { PDFAcroForm, PDFRef } from "../../core";
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export interface FlattenOptions {
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updateFieldAppearances: boolean;
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}
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/**
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* Represents the interactive form of a [[PDFDocument]].
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*
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* Interactive forms (sometimes called _AcroForms_) are collections of fields
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* designed to gather information from a user. A PDF document may contains any
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* number of fields that appear on various pages, all of which make up a single,
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* global interactive form spanning the entire document. This means that
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* instances of [[PDFDocument]] shall contain at most one [[PDFForm]].
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*
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* The fields of an interactive form are represented by [[PDFField]] instances.
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*/
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export default class PDFForm {
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/**
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* > **NOTE:** You probably don't want to call this method directly. Instead,
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* > consider using the [[PDFDocument.getForm]] method, which will create an
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* > instance of [[PDFForm]] for you.
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*
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* Create an instance of [[PDFForm]] from an existing acroForm and embedder
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*
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* @param acroForm The underlying `PDFAcroForm` for this form.
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* @param doc The document to which the form will belong.
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*/
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static of: (acroForm: PDFAcroForm, doc: PDFDocument) => PDFForm;
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/** The low-level PDFAcroForm wrapped by this form. */
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readonly acroForm: PDFAcroForm;
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/** The document to which this form belongs. */
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readonly doc: PDFDocument;
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private readonly dirtyFields;
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private readonly defaultFontCache;
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private constructor();
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/**
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* Returns `true` if this [[PDFForm]] has XFA data. Most PDFs with form
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* fields do not use XFA as it is not widely supported by PDF readers.
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*
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* > `pdf-lib` does not support creation, modification, or reading of XFA
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* > fields.
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*
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* For example:
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* ```js
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* const form = pdfDoc.getForm()
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* if (form.hasXFA()) console.log('PDF has XFA data')
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* ```
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* @returns Whether or not this form has XFA data.
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*/
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hasXFA(): boolean;
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/**
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* Disconnect the XFA data from this [[PDFForm]] (if any exists). This will
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* force readers to fallback to standard fields if the [[PDFDocument]]
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* contains any. For example:
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*
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* For example:
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* ```js
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* const form = pdfDoc.getForm()
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* form.deleteXFA()
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* ```
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*/
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deleteXFA(): void;
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/**
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* Get all fields contained in this [[PDFForm]]. For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const fields = form.getFields()
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* fields.forEach(field => {
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* const type = field.constructor.name
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* const name = field.getName()
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* console.log(`${type}: ${name}`)
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* })
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* ```
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* @returns An array of all fields in this form.
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*/
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getFields(): PDFField[];
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/**
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* Get the field in this [[PDFForm]] with the given name. For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const field = form.getFieldMaybe('Page1.Foo.Bar[0]')
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* if (field) console.log('Field exists!')
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* ```
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* @param name A fully qualified field name.
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* @returns The field with the specified name, if one exists.
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*/
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getFieldMaybe(name: string): PDFField | undefined;
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/**
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* Get the field in this [[PDFForm]] with the given name. For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const field = form.getField('Page1.Foo.Bar[0]')
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* ```
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* If no field exists with the provided name, an error will be thrown.
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* @param name A fully qualified field name.
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* @returns The field with the specified name.
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*/
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getField(name: string): PDFField;
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/**
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* Get the button field in this [[PDFForm]] with the given name. For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const button = form.getButton('Page1.Foo.Button[0]')
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* ```
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* An error will be thrown if no field exists with the provided name, or if
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* the field exists but is not a button.
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* @param name A fully qualified button name.
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* @returns The button with the specified name.
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*/
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getButton(name: string): PDFButton;
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/**
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* Get the check box field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const checkBox = form.getCheckBox('Page1.Foo.CheckBox[0]')
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* checkBox.check()
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* ```
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* An error will be thrown if no field exists with the provided name, or if
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* the field exists but is not a check box.
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* @param name A fully qualified check box name.
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* @returns The check box with the specified name.
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*/
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getCheckBox(name: string): PDFCheckBox;
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/**
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* Get the dropdown field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const dropdown = form.getDropdown('Page1.Foo.Dropdown[0]')
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* const options = dropdown.getOptions()
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* dropdown.select(options[0])
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* ```
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* An error will be thrown if no field exists with the provided name, or if
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* the field exists but is not a dropdown.
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* @param name A fully qualified dropdown name.
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* @returns The dropdown with the specified name.
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*/
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getDropdown(name: string): PDFDropdown;
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/**
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* Get the option list field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const optionList = form.getOptionList('Page1.Foo.OptionList[0]')
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* const options = optionList.getOptions()
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* optionList.select(options[0])
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* ```
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* An error will be thrown if no field exists with the provided name, or if
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* the field exists but is not an option list.
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* @param name A fully qualified option list name.
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* @returns The option list with the specified name.
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*/
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getOptionList(name: string): PDFOptionList;
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/**
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* Get the radio group field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const radioGroup = form.getRadioGroup('Page1.Foo.RadioGroup[0]')
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* const options = radioGroup.getOptions()
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* radioGroup.select(options[0])
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* ```
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* An error will be thrown if no field exists with the provided name, or if
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* the field exists but is not a radio group.
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* @param name A fully qualified radio group name.
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* @returns The radio group with the specified name.
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*/
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getRadioGroup(name: string): PDFRadioGroup;
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/**
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* Get the signature field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const signature = form.getSignature('Page1.Foo.Signature[0]')
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* ```
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* An error will be thrown if no field exists with the provided name, or if
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* the field exists but is not a signature.
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* @param name A fully qualified signature name.
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* @returns The signature with the specified name.
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*/
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getSignature(name: string): PDFSignature;
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/**
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* Get the text field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const form = pdfDoc.getForm()
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* const textField = form.getTextField('Page1.Foo.TextField[0]')
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* textField.setText('Are you designed to act or to be acted upon?')
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* ```
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* An error will be thrown if no field exists with the provided name, or if
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* the field exists but is not a text field.
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* @param name A fully qualified text field name.
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* @returns The text field with the specified name.
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*/
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getTextField(name: string): PDFTextField;
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/**
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* Create a new button field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const font = await pdfDoc.embedFont(StandardFonts.Helvetica)
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* const page = pdfDoc.addPage()
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*
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* const form = pdfDoc.getForm()
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* const button = form.createButton('cool.new.button')
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*
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* button.addToPage('Do Stuff', font, page)
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* ```
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* An error will be thrown if a field already exists with the provided name.
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* @param name The fully qualified name for the new button.
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* @returns The new button field.
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*/
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createButton(name: string): PDFButton;
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/**
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* Create a new check box field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const font = await pdfDoc.embedFont(StandardFonts.Helvetica)
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* const page = pdfDoc.addPage()
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*
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* const form = pdfDoc.getForm()
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* const checkBox = form.createCheckBox('cool.new.checkBox')
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*
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* checkBox.addToPage(page)
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* ```
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* An error will be thrown if a field already exists with the provided name.
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* @param name The fully qualified name for the new check box.
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* @returns The new check box field.
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*/
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createCheckBox(name: string): PDFCheckBox;
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/**
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* Create a new dropdown field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const font = await pdfDoc.embedFont(StandardFonts.Helvetica)
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* const page = pdfDoc.addPage()
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*
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* const form = pdfDoc.getForm()
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* const dropdown = form.createDropdown('cool.new.dropdown')
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*
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* dropdown.addToPage(font, page)
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* ```
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* An error will be thrown if a field already exists with the provided name.
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* @param name The fully qualified name for the new dropdown.
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* @returns The new dropdown field.
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*/
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createDropdown(name: string): PDFDropdown;
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/**
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* Create a new option list field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const font = await pdfDoc.embedFont(StandardFonts.Helvetica)
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* const page = pdfDoc.addPage()
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*
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* const form = pdfDoc.getForm()
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* const optionList = form.createOptionList('cool.new.optionList')
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*
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* optionList.addToPage(font, page)
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* ```
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* An error will be thrown if a field already exists with the provided name.
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* @param name The fully qualified name for the new option list.
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* @returns The new option list field.
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*/
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createOptionList(name: string): PDFOptionList;
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/**
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* Create a new radio group field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const font = await pdfDoc.embedFont(StandardFonts.Helvetica)
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* const page = pdfDoc.addPage()
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*
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* const form = pdfDoc.getForm()
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* const radioGroup = form.createRadioGroup('cool.new.radioGroup')
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*
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* radioGroup.addOptionToPage('is-dog', page, { y: 0 })
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* radioGroup.addOptionToPage('is-cat', page, { y: 75 })
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* ```
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* An error will be thrown if a field already exists with the provided name.
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* @param name The fully qualified name for the new radio group.
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* @returns The new radio group field.
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*/
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createRadioGroup(name: string): PDFRadioGroup;
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/**
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* Create a new text field in this [[PDFForm]] with the given name.
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* For example:
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* ```js
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* const font = await pdfDoc.embedFont(StandardFonts.Helvetica)
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* const page = pdfDoc.addPage()
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*
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* const form = pdfDoc.getForm()
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* const textField = form.createTextField('cool.new.textField')
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*
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* textField.addToPage(font, page)
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* ```
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* An error will be thrown if a field already exists with the provided name.
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* @param name The fully qualified name for the new radio group.
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* @returns The new radio group field.
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*/
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createTextField(name: string): PDFTextField;
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/**
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* Flatten all fields in this [[PDFForm]].
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*
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* Flattening a form field will take the current appearance for each of that
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* field's widgets and make them part of their page's content stream. All form
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* fields and annotations associated are then removed. Note that once a form
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* has been flattened its fields can no longer be accessed or edited.
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*
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* This operation is often used after filling form fields to ensure a
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* consistent appearance across different PDF readers and/or printers.
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* Another common use case is to copy a template document with form fields
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* into another document. In this scenario you would load the template
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* document, fill its fields, flatten it, and then copy its pages into the
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* recipient document - the filled fields will be copied over.
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*
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* For example:
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* ```js
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* const form = pdfDoc.getForm();
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* form.flatten();
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* ```
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*/
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flatten(options?: FlattenOptions): void;
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/**
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* Remove a field from this [[PDFForm]].
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*
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* For example:
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* ```js
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* const form = pdfDoc.getForm();
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* const ageField = form.getFields().find(x => x.getName() === 'Age');
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* form.removeField(ageField);
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* ```
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*/
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removeField(field: PDFField): void;
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/**
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* Update the appearance streams for all widgets of all fields in this
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* [[PDFForm]]. Appearance streams will only be created for a widget if it
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* does not have any existing appearance streams, or the field's value has
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* changed (e.g. by calling [[PDFTextField.setText]] or
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* [[PDFDropdown.select]]).
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*
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* For example:
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* ```js
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* const courier = await pdfDoc.embedFont(StandardFonts.Courier)
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* const form = pdfDoc.getForm()
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* form.updateFieldAppearances(courier)
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* ```
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*
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* **IMPORTANT:** The default value for the `font` parameter is
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* [[StandardFonts.Helvetica]]. Note that this is a WinAnsi font. This means
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* that encoding errors will be thrown if any fields contain text with
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* characters outside the WinAnsi character set (the latin alphabet).
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*
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* Embedding a custom font and passing that as the `font`
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* parameter allows you to generate appearance streams with non WinAnsi
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* characters (assuming your custom font supports them).
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*
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* > **NOTE:** The [[PDFDocument.save]] method will call this method to
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* > update appearances automatically if a form was accessed via the
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* > [[PDFDocument.getForm]] method prior to saving.
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*
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* @param font Optionally, the font to use when creating new appearances.
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*/
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updateFieldAppearances(font?: PDFFont): void;
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/**
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* Mark a field as dirty. This will cause its appearance streams to be
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* updated by [[PDFForm.updateFieldAppearances]].
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* ```js
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* const form = pdfDoc.getForm()
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* const field = form.getField('foo.bar')
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* form.markFieldAsDirty(field.ref)
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* ```
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* @param fieldRef The reference to the field that should be marked.
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*/
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markFieldAsDirty(fieldRef: PDFRef): void;
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/**
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* Mark a field as dirty. This will cause its appearance streams to not be
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* updated by [[PDFForm.updateFieldAppearances]].
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* ```js
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* const form = pdfDoc.getForm()
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* const field = form.getField('foo.bar')
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* form.markFieldAsClean(field.ref)
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* ```
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* @param fieldRef The reference to the field that should be marked.
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*/
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markFieldAsClean(fieldRef: PDFRef): void;
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/**
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* Returns `true` is the specified field has been marked as dirty.
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* ```js
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* const form = pdfDoc.getForm()
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* const field = form.getField('foo.bar')
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* if (form.fieldIsDirty(field.ref)) console.log('Field is dirty')
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* ```
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* @param fieldRef The reference to the field that should be checked.
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* @returns Whether or not the specified field is dirty.
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*/
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fieldIsDirty(fieldRef: PDFRef): boolean;
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getDefaultFont(): PDFFont;
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private findWidgetPage;
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private findWidgetAppearanceRef;
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private findOrCreateNonTerminals;
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private findNonTerminal;
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private embedDefaultFont;
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}
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//# sourceMappingURL=PDFForm.d.ts.map
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