Source Code Cross Referenced for PdfArray.java in  » PDF » pdf-itext » com » lowagie » text » pdf » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » PDF » pdf itext » com.lowagie.text.pdf 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Id: PdfArray.java 2739 2007-05-04 11:24:51Z blowagie $
003:         * $Name$
004:         *
005:         * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
006:         *
007:         * The contents of this file are subject to the Mozilla Public License Version 1.1
008:         * (the "License"); you may not use this file except in compliance with the License.
009:         * You may obtain a copy of the License at http://www.mozilla.org/MPL/
010:         *
011:         * Software distributed under the License is distributed on an "AS IS" basis,
012:         * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
013:         * for the specific language governing rights and limitations under the License.
014:         *
015:         * The Original Code is 'iText, a free JAVA-PDF library'.
016:         *
017:         * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
018:         * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
019:         * All Rights Reserved.
020:         * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
021:         * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
022:         *
023:         * Contributor(s): all the names of the contributors are added in the source code
024:         * where applicable.
025:         *
026:         * Alternatively, the contents of this file may be used under the terms of the
027:         * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
028:         * provisions of LGPL are applicable instead of those above.  If you wish to
029:         * allow use of your version of this file only under the terms of the LGPL
030:         * License and not to allow others to use your version of this file under
031:         * the MPL, indicate your decision by deleting the provisions above and
032:         * replace them with the notice and other provisions required by the LGPL.
033:         * If you do not delete the provisions above, a recipient may use your version
034:         * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
035:         *
036:         * This library is free software; you can redistribute it and/or modify it
037:         * under the terms of the MPL as stated above or under the terms of the GNU
038:         * Library General Public License as published by the Free Software Foundation;
039:         * either version 2 of the License, or any later version.
040:         *
041:         * This library is distributed in the hope that it will be useful, but WITHOUT
042:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
043:         * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
044:         * details.
045:         *
046:         * If you didn't download this code from the following link, you should check if
047:         * you aren't using an obsolete version:
048:         * http://www.lowagie.com/iText/
049:         */
050:
051:        package com.lowagie.text.pdf;
052:
053:        import java.io.IOException;
054:        import java.io.OutputStream;
055:        import java.util.ArrayList;
056:        import java.util.Iterator;
057:        import java.util.ListIterator;
058:
059:        /**
060:         * <CODE>PdfArray</CODE> is the PDF Array object.
061:         * <P>
062:         * An array is a sequence of PDF objects. An array may contain a mixture of object types.
063:         * An array is written as a left square bracket ([), followed by a sequence of objects,
064:         * followed by a right square bracket (]).<BR>
065:         * This object is described in the 'Portable Document Format Reference Manual version 1.7'
066:         * section 3.2.5 (page 58).
067:         *
068:         * @see		PdfObject
069:         */
070:
071:        public class PdfArray extends PdfObject {
072:
073:            // membervariables
074:
075:            /** this is the actual array of PdfObjects */
076:            protected ArrayList arrayList;
077:
078:            // constructors
079:
080:            /**
081:             * Constructs an empty <CODE>PdfArray</CODE>-object.
082:             */
083:
084:            public PdfArray() {
085:                super (ARRAY);
086:                arrayList = new ArrayList();
087:            }
088:
089:            /**
090:             * Constructs an <CODE>PdfArray</CODE>-object, containing 1 <CODE>PdfObject</CODE>.
091:             *
092:             * @param	object		a <CODE>PdfObject</CODE> that has to be added to the array
093:             */
094:
095:            public PdfArray(PdfObject object) {
096:                super (ARRAY);
097:                arrayList = new ArrayList();
098:                arrayList.add(object);
099:            }
100:
101:            public PdfArray(float values[]) {
102:                super (ARRAY);
103:                arrayList = new ArrayList();
104:                add(values);
105:            }
106:
107:            public PdfArray(int values[]) {
108:                super (ARRAY);
109:                arrayList = new ArrayList();
110:                add(values);
111:            }
112:
113:            /**
114:             * Constructs an <CODE>PdfArray</CODE>-object, containing all the <CODE>PdfObject</CODE>s in a given <CODE>PdfArray</CODE>.
115:             *
116:             * @param	array		a <CODE>PdfArray</CODE> that has to be added to the array
117:             */
118:
119:            public PdfArray(PdfArray array) {
120:                super (ARRAY);
121:                arrayList = new ArrayList(array.getArrayList());
122:            }
123:
124:            // methods overriding some methods in PdfObject
125:
126:            /**
127:             * Returns the PDF representation of this <CODE>PdfArray</CODE>.
128:             */
129:
130:            public void toPdf(PdfWriter writer, OutputStream os)
131:                    throws IOException {
132:                os.write('[');
133:
134:                Iterator i = arrayList.iterator();
135:                PdfObject object;
136:                int type = 0;
137:                if (i.hasNext()) {
138:                    object = (PdfObject) i.next();
139:                    if (object == null)
140:                        object = PdfNull.PDFNULL;
141:                    object.toPdf(writer, os);
142:                }
143:                while (i.hasNext()) {
144:                    object = (PdfObject) i.next();
145:                    if (object == null)
146:                        object = PdfNull.PDFNULL;
147:                    type = object.type();
148:                    if (type != PdfObject.ARRAY && type != PdfObject.DICTIONARY
149:                            && type != PdfObject.NAME
150:                            && type != PdfObject.STRING)
151:                        os.write(' ');
152:                    object.toPdf(writer, os);
153:                }
154:                os.write(']');
155:            }
156:
157:            // methods concerning the ArrayList-membervalue
158:
159:            /**
160:             * Returns an ArrayList containing <CODE>PdfObject</CODE>s.
161:             *
162:             * @return		an ArrayList
163:             */
164:
165:            public ArrayList getArrayList() {
166:                return arrayList;
167:            }
168:
169:            /**
170:             * Returns the number of entries in the array.
171:             *
172:             * @return		the size of the ArrayList
173:             */
174:
175:            public int size() {
176:                return arrayList.size();
177:            }
178:
179:            /**
180:             * Adds a <CODE>PdfObject</CODE> to the <CODE>PdfArray</CODE>.
181:             *
182:             * @param		object			<CODE>PdfObject</CODE> to add
183:             * @return		<CODE>true</CODE>
184:             */
185:
186:            public boolean add(PdfObject object) {
187:                return arrayList.add(object);
188:            }
189:
190:            public boolean add(float values[]) {
191:                for (int k = 0; k < values.length; ++k)
192:                    arrayList.add(new PdfNumber(values[k]));
193:                return true;
194:            }
195:
196:            public boolean add(int values[]) {
197:                for (int k = 0; k < values.length; ++k)
198:                    arrayList.add(new PdfNumber(values[k]));
199:                return true;
200:            }
201:
202:            /**
203:             * Adds a <CODE>PdfObject</CODE> to the <CODE>PdfArray</CODE>.
204:             * <P>
205:             * The newly added object will be the first element in the <CODE>ArrayList</CODE>.
206:             *
207:             * @param		object			<CODE>PdfObject</CODE> to add
208:             */
209:
210:            public void addFirst(PdfObject object) {
211:                arrayList.add(0, object);
212:            }
213:
214:            /**
215:             * Checks if the <CODE>PdfArray</CODE> already contains a certain <CODE>PdfObject</CODE>.
216:             *
217:             * @param		object			<CODE>PdfObject</CODE> to check
218:             * @return		<CODE>true</CODE>
219:             */
220:
221:            public boolean contains(PdfObject object) {
222:                return arrayList.contains(object);
223:            }
224:
225:            public ListIterator listIterator() {
226:                return arrayList.listIterator();
227:            }
228:
229:            public String toString() {
230:                return arrayList.toString();
231:            }
232:
233:            public PdfObject getPdfObject(int idx) {
234:                return (PdfObject) arrayList.get(idx);
235:            }
236:
237:            public PdfObject getDirectObject(int idx) {
238:                return PdfReader.getPdfObject(getPdfObject(idx));
239:            }
240:
241:            // more of the same like PdfDictionary. (MAS 2/17/06)
242:            public PdfDictionary getAsDict(int idx) {
243:                PdfDictionary dict = null;
244:                PdfObject orig = getDirectObject(idx);
245:                if (orig != null && orig.isDictionary())
246:                    dict = (PdfDictionary) orig;
247:                return dict;
248:            }
249:
250:            public PdfArray getAsArray(int idx) {
251:                PdfArray array = null;
252:                PdfObject orig = getDirectObject(idx);
253:                if (orig != null && orig.isArray())
254:                    array = (PdfArray) orig;
255:                return array;
256:            }
257:
258:            public PdfStream getAsStream(int idx) {
259:                PdfStream stream = null;
260:                PdfObject orig = getDirectObject(idx);
261:                if (orig != null && orig.isStream())
262:                    stream = (PdfStream) orig;
263:                return stream;
264:            }
265:
266:            public PdfString getAsString(int idx) {
267:                PdfString string = null;
268:                PdfObject orig = getDirectObject(idx);
269:                if (orig != null && orig.isString())
270:                    string = (PdfString) orig;
271:                return string;
272:            }
273:
274:            public PdfNumber getAsNumber(int idx) {
275:                PdfNumber number = null;
276:                PdfObject orig = getDirectObject(idx);
277:                if (orig != null && orig.isNumber())
278:                    number = (PdfNumber) orig;
279:                return number;
280:            }
281:
282:            public PdfName getAsName(int idx) {
283:                PdfName name = null;
284:                PdfObject orig = getDirectObject(idx);
285:                if (orig != null && orig.isName())
286:                    name = (PdfName) orig;
287:                return name;
288:            }
289:
290:            public PdfBoolean getAsBoolean(int idx) {
291:                PdfBoolean bool = null;
292:                PdfObject orig = getDirectObject(idx);
293:                if (orig != null && orig.isBoolean())
294:                    bool = (PdfBoolean) orig;
295:                return bool;
296:            }
297:
298:            public PdfIndirectReference getAsIndirectObject(int idx) {
299:                PdfIndirectReference ref = null;
300:                PdfObject orig = getPdfObject(idx); // not getDirect this time.
301:                if (orig != null && orig.isIndirect())
302:                    ref = (PdfIndirectReference) orig;
303:                return ref;
304:            }
305:        }
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