Java tutorial
/* * * This file is part of the iText (R) project. Copyright (c) 1998-2019 iText Group NV * Authors: Bruno Lowagie, Paulo Soares, et al. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License version 3 * as published by the Free Software Foundation with the addition of the * following permission added to Section 15 as permitted in Section 7(a): * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT * OF THIRD PARTY RIGHTS * * 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 http://www.gnu.org/licenses or write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA, 02110-1301 USA, or download the license from the following URL: * http://itextpdf.com/terms-of-use/ * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License. * * In accordance with Section 7(b) of the GNU Affero General Public License, * a covered work must retain the producer line in every PDF that is created * or manipulated using iText. * * You can be released from the requirements of the license by purchasing * a commercial license. Buying such a license is mandatory as soon as you * develop commercial activities involving the iText software without * disclosing the source code of your own applications. * These activities include: offering paid services to customers as an ASP, * serving PDFs on the fly in a web application, shipping iText with a closed * source product. * * For more information, please contact iText Software Corp. at this * address: sales@itextpdf.com */ package com.itextpdf.text.pdf; import java.io.IOException; import java.io.OutputStream; import java.net.URL; import java.util.ArrayList; import com.itextpdf.text.error_messages.MessageLocalization; import com.itextpdf.text.pdf.collection.PdfTargetDictionary; import com.itextpdf.text.pdf.internal.PdfIsoKeys; /** * A <CODE>PdfAction</CODE> defines an action that can be triggered from a PDF file. * * @see PdfDictionary */ public class PdfAction extends PdfDictionary { /** A named action to go to the first page. */ public static final int FIRSTPAGE = 1; /** A named action to go to the previous page. */ public static final int PREVPAGE = 2; /** A named action to go to the next page. */ public static final int NEXTPAGE = 3; /** A named action to go to the last page. */ public static final int LASTPAGE = 4; /** A named action to open a print dialog. */ public static final int PRINTDIALOG = 5; /** a possible submitvalue */ public static final int SUBMIT_EXCLUDE = 1; /** a possible submitvalue */ public static final int SUBMIT_INCLUDE_NO_VALUE_FIELDS = 2; /** a possible submitvalue */ public static final int SUBMIT_HTML_FORMAT = 4; /** a possible submitvalue */ public static final int SUBMIT_HTML_GET = 8; /** a possible submitvalue */ public static final int SUBMIT_COORDINATES = 16; /** a possible submitvalue */ public static final int SUBMIT_XFDF = 32; /** a possible submitvalue */ public static final int SUBMIT_INCLUDE_APPEND_SAVES = 64; /** a possible submitvalue */ public static final int SUBMIT_INCLUDE_ANNOTATIONS = 128; /** a possible submitvalue */ public static final int SUBMIT_PDF = 256; /** a possible submitvalue */ public static final int SUBMIT_CANONICAL_FORMAT = 512; /** a possible submitvalue */ public static final int SUBMIT_EXCL_NON_USER_ANNOTS = 1024; /** a possible submitvalue */ public static final int SUBMIT_EXCL_F_KEY = 2048; /** a possible submitvalue */ public static final int SUBMIT_EMBED_FORM = 8196; /** a possible submitvalue */ public static final int RESET_EXCLUDE = 1; // constructors /** Create an empty action. */ public PdfAction() { } /** * Constructs a new <CODE>PdfAction</CODE> of Subtype URI. * * @param url the Url to go to */ public PdfAction(URL url) { this(url.toExternalForm()); } /** * Construct a new <CODE>PdfAction</CODE> of Subtype URI that accepts the x and y coordinate of the position that was clicked. * @param url * @param isMap */ public PdfAction(URL url, boolean isMap) { this(url.toExternalForm(), isMap); } /** * Constructs a new <CODE>PdfAction</CODE> of Subtype URI. * * @param url the url to go to */ public PdfAction(String url) { this(url, false); } /** * Construct a new <CODE>PdfAction</CODE> of Subtype URI that accepts the x and y coordinate of the position that was clicked. * @param url * @param isMap */ public PdfAction(String url, boolean isMap) { put(PdfName.S, PdfName.URI); put(PdfName.URI, new PdfString(url)); if (isMap) put(PdfName.ISMAP, PdfBoolean.PDFTRUE); } /** * Constructs a new <CODE>PdfAction</CODE> of Subtype GoTo. * @param destination the destination to go to */ PdfAction(PdfIndirectReference destination) { put(PdfName.S, PdfName.GOTO); put(PdfName.D, destination); } /** * Constructs a new <CODE>PdfAction</CODE> of Subtype GoToR. * @param filename the file name to go to * @param name the named destination to go to */ public PdfAction(String filename, String name) { put(PdfName.S, PdfName.GOTOR); put(PdfName.F, new PdfString(filename)); put(PdfName.D, new PdfString(name)); } /** * Constructs a new <CODE>PdfAction</CODE> of Subtype GoToR. * @param filename the file name to go to * @param page the page destination to go to */ public PdfAction(String filename, int page) { put(PdfName.S, PdfName.GOTOR); put(PdfName.F, new PdfString(filename)); put(PdfName.D, new PdfLiteral("[" + (page - 1) + " /FitH 10000]")); } /** Implements name actions. The action can be FIRSTPAGE, LASTPAGE, * NEXTPAGE, PREVPAGE and PRINTDIALOG. * @param named the named action */ public PdfAction(int named) { put(PdfName.S, PdfName.NAMED); switch (named) { case FIRSTPAGE: put(PdfName.N, PdfName.FIRSTPAGE); break; case LASTPAGE: put(PdfName.N, PdfName.LASTPAGE); break; case NEXTPAGE: put(PdfName.N, PdfName.NEXTPAGE); break; case PREVPAGE: put(PdfName.N, PdfName.PREVPAGE); break; case PRINTDIALOG: put(PdfName.S, PdfName.JAVASCRIPT); put(PdfName.JS, new PdfString("this.print(true);\r")); break; default: throw new RuntimeException(MessageLocalization.getComposedMessage("invalid.named.action")); } } /** Launches an application or a document. * @param application the application to be launched or the document to be opened or printed. * @param parameters (Windows-specific) A parameter string to be passed to the application. * It can be <CODE>null</CODE>. * @param operation (Windows-specific) the operation to perform: "open" - Open a document, * "print" - Print a document. * It can be <CODE>null</CODE>. * @param defaultDir (Windows-specific) the default directory in standard DOS syntax. * It can be <CODE>null</CODE>. */ public PdfAction(String application, String parameters, String operation, String defaultDir) { put(PdfName.S, PdfName.LAUNCH); if (parameters == null && operation == null && defaultDir == null) put(PdfName.F, new PdfString(application)); else { PdfDictionary dic = new PdfDictionary(); dic.put(PdfName.F, new PdfString(application)); if (parameters != null) dic.put(PdfName.P, new PdfString(parameters)); if (operation != null) dic.put(PdfName.O, new PdfString(operation)); if (defaultDir != null) dic.put(PdfName.D, new PdfString(defaultDir)); put(PdfName.WIN, dic); } } /** Launches an application or a document. * @param application the application to be launched or the document to be opened or printed. * @param parameters (Windows-specific) A parameter string to be passed to the application. * It can be <CODE>null</CODE>. * @param operation (Windows-specific) the operation to perform: "open" - Open a document, * "print" - Print a document. * It can be <CODE>null</CODE>. * @param defaultDir (Windows-specific) the default directory in standard DOS syntax. * It can be <CODE>null</CODE>. * @return a Launch action */ public static PdfAction createLaunch(String application, String parameters, String operation, String defaultDir) { return new PdfAction(application, parameters, operation, defaultDir); } /**Creates a Rendition action * @param file * @param fs * @param mimeType * @param ref * @return a Media Clip action * @throws IOException */ public static PdfAction rendition(String file, PdfFileSpecification fs, String mimeType, PdfIndirectReference ref) throws IOException { PdfAction js = new PdfAction(); js.put(PdfName.S, PdfName.RENDITION); js.put(PdfName.R, new PdfRendition(file, fs, mimeType)); js.put(new PdfName("OP"), new PdfNumber(0)); js.put(new PdfName("AN"), ref); return js; } /** Creates a JavaScript action. If the JavaScript is smaller than * 50 characters it will be placed as a string, otherwise it will * be placed as a compressed stream. * @param code the JavaScript code * @param writer the writer for this action * @param unicode select JavaScript unicode. Note that the internal * Acrobat JavaScript engine does not support unicode, * so this may or may not work for you * @return the JavaScript action */ public static PdfAction javaScript(String code, PdfWriter writer, boolean unicode) { PdfAction js = new PdfAction(); js.put(PdfName.S, PdfName.JAVASCRIPT); if (unicode && code.length() < 50) { js.put(PdfName.JS, new PdfString(code, PdfObject.TEXT_UNICODE)); } else if (!unicode && code.length() < 100) { js.put(PdfName.JS, new PdfString(code)); } else { try { byte b[] = PdfEncodings.convertToBytes(code, unicode ? PdfObject.TEXT_UNICODE : PdfObject.TEXT_PDFDOCENCODING); PdfStream stream = new PdfStream(b); stream.flateCompress(writer.getCompressionLevel()); js.put(PdfName.JS, writer.addToBody(stream).getIndirectReference()); } catch (Exception e) { js.put(PdfName.JS, new PdfString(code)); } } return js; } /** Creates a JavaScript action. If the JavaScript is smaller than * 50 characters it will be place as a string, otherwise it will * be placed as a compressed stream. * @param code the JavaScript code * @param writer the writer for this action * @return the JavaScript action */ public static PdfAction javaScript(String code, PdfWriter writer) { return javaScript(code, writer, false); } /** * A Hide action hides or shows an object. * @param obj object to hide or show * @param hide true is hide, false is show * @return a Hide Action */ static PdfAction createHide(PdfObject obj, boolean hide) { PdfAction action = new PdfAction(); action.put(PdfName.S, PdfName.HIDE); action.put(PdfName.T, obj); if (!hide) action.put(PdfName.H, PdfBoolean.PDFFALSE); return action; } /** * A Hide action hides or shows an annotation. * @param annot * @param hide * @return A Hide Action */ public static PdfAction createHide(PdfAnnotation annot, boolean hide) { return createHide(annot.getIndirectReference(), hide); } /** * A Hide action hides or shows an annotation. * @param name * @param hide * @return A Hide Action */ public static PdfAction createHide(String name, boolean hide) { return createHide(new PdfString(name), hide); } static PdfArray buildArray(Object names[]) { PdfArray array = new PdfArray(); for (int k = 0; k < names.length; ++k) { Object obj = names[k]; if (obj instanceof String) array.add(new PdfString((String) obj)); else if (obj instanceof PdfAnnotation) array.add(((PdfAnnotation) obj).getIndirectReference()); else throw new RuntimeException( MessageLocalization.getComposedMessage("the.array.must.contain.string.or.pdfannotation")); } return array; } /** * A Hide action hides or shows objects. * @param names * @param hide * @return A Hide Action */ public static PdfAction createHide(Object names[], boolean hide) { return createHide(buildArray(names), hide); } /** * Creates a submit form. * @param file the URI to submit the form to * @param names the objects to submit * @param flags submit properties * @return A PdfAction */ public static PdfAction createSubmitForm(String file, Object names[], int flags) { PdfAction action = new PdfAction(); action.put(PdfName.S, PdfName.SUBMITFORM); PdfDictionary dic = new PdfDictionary(); dic.put(PdfName.F, new PdfString(file)); dic.put(PdfName.FS, PdfName.URL); action.put(PdfName.F, dic); if (names != null) action.put(PdfName.FIELDS, buildArray(names)); action.put(PdfName.FLAGS, new PdfNumber(flags)); return action; } /** * Creates a resetform. * @param names the objects to reset * @param flags submit properties * @return A PdfAction */ public static PdfAction createResetForm(Object names[], int flags) { PdfAction action = new PdfAction(); action.put(PdfName.S, PdfName.RESETFORM); if (names != null) action.put(PdfName.FIELDS, buildArray(names)); action.put(PdfName.FLAGS, new PdfNumber(flags)); return action; } /** * Creates an Import field. * @param file * @return A PdfAction */ public static PdfAction createImportData(String file) { PdfAction action = new PdfAction(); action.put(PdfName.S, PdfName.IMPORTDATA); action.put(PdfName.F, new PdfString(file)); return action; } /** Add a chained action. * @param na the next action */ public void next(PdfAction na) { PdfObject nextAction = get(PdfName.NEXT); if (nextAction == null) put(PdfName.NEXT, na); else if (nextAction.isDictionary()) { PdfArray array = new PdfArray(nextAction); array.add(na); put(PdfName.NEXT, array); } else { ((PdfArray) nextAction).add(na); } } /** Creates a GoTo action to an internal page. * @param page the page to go. First page is 1 * @param dest the destination for the page * @param writer the writer for this action * @return a GoTo action */ public static PdfAction gotoLocalPage(int page, PdfDestination dest, PdfWriter writer) { PdfIndirectReference ref = writer.getPageReference(page); PdfDestination d = new PdfDestination(dest); d.addPage(ref); PdfAction action = new PdfAction(); action.put(PdfName.S, PdfName.GOTO); action.put(PdfName.D, d); return action; } /** * Creates a GoTo action to a named destination. * @param dest the named destination * @param isName if true sets the destination as a name, if false sets it as a String * @return a GoTo action */ public static PdfAction gotoLocalPage(String dest, boolean isName) { PdfAction action = new PdfAction(); action.put(PdfName.S, PdfName.GOTO); if (isName) action.put(PdfName.D, new PdfName(dest)); else action.put(PdfName.D, new PdfString(dest, PdfObject.TEXT_UNICODE)); return action; } /** * Creates a GoToR action to a named destination. * @param filename the file name to go to * @param dest the destination name * @param isName if true sets the destination as a name, if false sets it as a String * @param newWindow open the document in a new window if <CODE>true</CODE>, if false the current document is replaced by the new document. * @return a GoToR action */ public static PdfAction gotoRemotePage(String filename, String dest, boolean isName, boolean newWindow) { PdfAction action = new PdfAction(); action.put(PdfName.F, new PdfString(filename)); action.put(PdfName.S, PdfName.GOTOR); if (isName) action.put(PdfName.D, new PdfName(dest)); else action.put(PdfName.D, new PdfString(dest, PdfObject.TEXT_UNICODE)); if (newWindow) action.put(PdfName.NEWWINDOW, PdfBoolean.PDFTRUE); return action; } /** * Creates a GoToE action to an embedded file. * @param filename the root document of the target (null if the target is in the same document) * @param dest the named destination * @param isName if true sets the destination as a name, if false sets it as a String * @return a GoToE action */ public static PdfAction gotoEmbedded(String filename, PdfTargetDictionary target, String dest, boolean isName, boolean newWindow) { if (isName) return gotoEmbedded(filename, target, new PdfName(dest), newWindow); else return gotoEmbedded(filename, target, new PdfString(dest, PdfObject.TEXT_UNICODE), newWindow); } /** * Creates a GoToE action to an embedded file. * @param filename the root document of the target (null if the target is in the same document) * @param target a path to the target document of this action * @param dest the destination inside the target document, can be of type PdfDestination, PdfName, or PdfString * @param newWindow if true, the destination document should be opened in a new window * @return a GoToE action */ public static PdfAction gotoEmbedded(String filename, PdfTargetDictionary target, PdfObject dest, boolean newWindow) { PdfAction action = new PdfAction(); action.put(PdfName.S, PdfName.GOTOE); action.put(PdfName.T, target); action.put(PdfName.D, dest); action.put(PdfName.NEWWINDOW, new PdfBoolean(newWindow)); if (filename != null) { action.put(PdfName.F, new PdfString(filename)); } return action; } /** * A set-OCG-state action (PDF 1.5) sets the state of one or more optional content * groups. * @param state an array consisting of any number of sequences beginning with a <CODE>PdfName</CODE> * or <CODE>String</CODE> (ON, OFF, or Toggle) followed by one or more optional content group dictionaries * <CODE>PdfLayer</CODE> or a <CODE>PdfIndirectReference</CODE> to a <CODE>PdfLayer</CODE>.<br> * The array elements are processed from left to right; each name is applied * to the subsequent groups until the next name is encountered: * <ul> * <li>ON sets the state of subsequent groups to ON</li> * <li>OFF sets the state of subsequent groups to OFF</li> * <li>Toggle reverses the state of subsequent groups</li> * </ul> * @param preserveRB if <CODE>true</CODE>, indicates that radio-button state relationships between optional * content groups (as specified by the RBGroups entry in the current configuration * dictionary) should be preserved when the states in the * <CODE>state</CODE> array are applied. That is, if a group is set to ON (either by ON or Toggle) during * processing of the <CODE>state</CODE> array, any other groups belong to the same radio-button * group are turned OFF. If a group is set to OFF, there is no effect on other groups.<br> * If <CODE>false</CODE>, radio-button state relationships, if any, are ignored * @return the action */ public static PdfAction setOCGstate(ArrayList<Object> state, boolean preserveRB) { PdfAction action = new PdfAction(); action.put(PdfName.S, PdfName.SETOCGSTATE); PdfArray a = new PdfArray(); for (int k = 0; k < state.size(); ++k) { Object o = state.get(k); if (o == null) continue; if (o instanceof PdfIndirectReference) a.add((PdfIndirectReference) o); else if (o instanceof PdfLayer) a.add(((PdfLayer) o).getRef()); else if (o instanceof PdfName) a.add((PdfName) o); else if (o instanceof String) { PdfName name = null; String s = (String) o; if (s.equalsIgnoreCase("on")) name = PdfName.ON; else if (s.equalsIgnoreCase("off")) name = PdfName.OFF; else if (s.equalsIgnoreCase("toggle")) name = PdfName.TOGGLE; else throw new IllegalArgumentException(MessageLocalization.getComposedMessage( "a.string.1.was.passed.in.state.only.on.off.and.toggle.are.allowed", s)); a.add(name); } else throw new IllegalArgumentException(MessageLocalization .getComposedMessage("invalid.type.was.passed.in.state.1", o.getClass().getName())); } action.put(PdfName.STATE, a); if (!preserveRB) action.put(PdfName.PRESERVERB, PdfBoolean.PDFFALSE); return action; } @Override public void toPdf(final PdfWriter writer, final OutputStream os) throws IOException { PdfWriter.checkPdfIsoConformance(writer, PdfIsoKeys.PDFISOKEY_ACTION, this); super.toPdf(writer, os); } }