| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.pdf; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.commons.io.output.CountingOutputStream; |
| |
| /** |
| * Class representing an array object. |
| */ |
| public class PDFArray extends PDFObject { |
| /** |
| * List holding the values of this array |
| */ |
| protected List<Object> values = new java.util.ArrayList<Object>(); |
| |
| /** |
| * Create a new, empty array object |
| * @param parent the array's parent if any |
| */ |
| public PDFArray(PDFObject parent) { |
| /* generic creation of PDF object */ |
| super(parent); |
| } |
| |
| /** |
| * Create a new, empty array object with no parent. |
| */ |
| public PDFArray() { |
| this((PDFObject) null); |
| } |
| |
| /** |
| * Create an array object. |
| * @param parent the array's parent if any |
| * @param values the actual array wrapped by this object |
| */ |
| public PDFArray(PDFObject parent, int[] values) { |
| /* generic creation of PDF object */ |
| super(parent); |
| |
| for (int value : values) { |
| this.values.add(value); |
| } |
| } |
| |
| /** |
| * Create an array object. |
| * @param parent the array's parent if any |
| * @param values the actual array wrapped by this object |
| */ |
| public PDFArray(PDFObject parent, double[] values) { |
| /* generic creation of PDF object */ |
| super(parent); |
| |
| for (double value : values) { |
| this.values.add(value); |
| } |
| } |
| |
| /** |
| * Create an array object. |
| * @param parent the array's parent if any |
| * @param values the actual values wrapped by this object |
| */ |
| public PDFArray(PDFObject parent, List<?> values) { |
| /* generic creation of PDF object */ |
| super(parent); |
| |
| this.values.addAll(values); |
| } |
| |
| /** |
| * Creates an array object made of the given elements. |
| * |
| * @param elements the array content |
| */ |
| public PDFArray(Object... elements) { |
| this(null, elements); |
| } |
| |
| /** |
| * Creates an array object made of the given elements. |
| * |
| * @param elements the array content |
| */ |
| public PDFArray(List<?> elements) { |
| this(null, elements); |
| } |
| |
| /** |
| * Create the array object |
| * @param parent the array's parent if any |
| * @param values the actual array wrapped by this object |
| */ |
| public PDFArray(PDFObject parent, Object[] values) { |
| /* generic creation of PDF object */ |
| super(parent); |
| |
| Collections.addAll(this.values, values); |
| } |
| |
| /** |
| * Indicates whether the given object exists in the array. |
| * @param obj the object to look for |
| * @return true if obj is contained |
| */ |
| public boolean contains(Object obj) { |
| return this.values.contains(obj); |
| } |
| |
| /** |
| * Returns the length of the array |
| * @return the length of the array |
| */ |
| public int length() { |
| return this.values.size(); |
| } |
| |
| /** |
| * Sets an entry at a given location. |
| * @param index the index of the value to set |
| * @param obj the new value |
| */ |
| public void set(int index, Object obj) { |
| this.values.set(index, obj); |
| } |
| |
| /** |
| * Sets an entry at a given location. |
| * @param index the index of the value to set |
| * @param value the new value |
| */ |
| public void set(int index, double value) { |
| this.values.set(index, value); |
| } |
| |
| /** |
| * Gets an entry at a given location. |
| * @param index the index of the value to set |
| * @return the requested value |
| */ |
| public Object get(int index) { |
| return this.values.get(index); |
| } |
| |
| /** |
| * Adds a new value to the array. |
| * @param obj the value |
| */ |
| public void add(Object obj) { |
| if (obj instanceof PDFObject) { |
| PDFObject pdfObj = (PDFObject)obj; |
| if (!pdfObj.hasObjectNumber()) { |
| pdfObj.setParent(this); |
| } |
| } |
| this.values.add(obj); |
| } |
| |
| /** |
| * Adds a new value to the array. |
| * @param value the value |
| */ |
| public void add(double value) { |
| this.values.add(value); |
| } |
| |
| /** |
| * Clears the PDF array. |
| */ |
| public void clear() { |
| this.values.clear(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public int output(OutputStream stream) throws IOException { |
| CountingOutputStream cout = new CountingOutputStream(stream); |
| StringBuilder textBuffer = new StringBuilder(64); |
| textBuffer.append('['); |
| for (int i = 0; i < values.size(); i++) { |
| if (i > 0) { |
| textBuffer.append(' '); |
| } |
| Object obj = this.values.get(i); |
| formatObject(obj, cout, textBuffer); |
| } |
| textBuffer.append(']'); |
| PDFDocument.flushTextBuffer(textBuffer, cout); |
| return cout.getCount(); |
| } |
| |
| @Override |
| public void getChildren(Set<PDFObject> children) { |
| List<Object> contents = new ArrayList<Object>(); |
| for (Object c : values) { |
| if (!(c instanceof PDFReference)) { |
| contents.add(c); |
| } |
| } |
| PDFDictionary.getChildren(contents, children); |
| } |
| } |