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- /*
- * 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.
- */
- package org.apache.poi.hslf.record;
-
- import java.io.IOException;
- import java.io.OutputStream;
- import java.util.ArrayList;
-
- import org.apache.poi.util.LittleEndian;
-
- /**
- * This class holds the links to exernal objects referenced
- * from the document.
- * @author Nick Burch
- */
- public class ExObjList extends RecordContainer {
- private byte[] _header;
- private static final long _type = RecordTypes.ExObjList.typeID;
-
- // Links to our more interesting children
- private ExObjListAtom exObjListAtom;
-
- /**
- * Returns the ExObjListAtom of this list
- */
- public ExObjListAtom getExObjListAtom() { return exObjListAtom; }
-
- /**
- * Returns all the ExHyperlinks
- */
- public ExHyperlink[] getExHyperlinks() {
- ArrayList<ExHyperlink> links = new ArrayList<>();
- for(int i=0; i<_children.length; i++) {
- if(_children[i] instanceof ExHyperlink) {
- links.add( (ExHyperlink)_children[i] );
- }
- }
-
- return links.toArray(new ExHyperlink[0]);
- }
-
- /**
- * Set things up, and find our more interesting children
- */
- protected ExObjList(byte[] source, int start, int len) {
- // Grab the header
- _header = new byte[8];
- System.arraycopy(source,start,_header,0,8);
-
- // Find our children
- _children = Record.findChildRecords(source,start+8,len-8);
- findInterestingChildren();
- }
-
- /**
- * Go through our child records, picking out the ones that are
- * interesting, and saving those for use by the easy helper
- * methods.
- */
- private void findInterestingChildren() {
- // First child should be the atom
- if(_children[0] instanceof ExObjListAtom) {
- exObjListAtom = (ExObjListAtom)_children[0];
- } else {
- throw new IllegalStateException("First child record wasn't a ExObjListAtom, was of type " + _children[0].getRecordType());
- }
- }
-
- /**
- * Create a new ExObjList, with blank fields
- */
- public ExObjList() {
- _header = new byte[8];
- _children = new org.apache.poi.hslf.record.Record[1];
-
- // Setup our header block
- _header[0] = 0x0f; // We are a container record
- LittleEndian.putShort(_header, 2, (short)_type);
-
- // Setup our child records
- _children[0] = new ExObjListAtom();
- findInterestingChildren();
- }
-
- /**
- * We are of type 1033
- */
- public long getRecordType() { return _type; }
-
- /**
- * Write the contents of the record back, so it can be written
- * to disk
- */
- public void writeOut(OutputStream out) throws IOException {
- writeOut(_header[0],_header[1],_type,_children,out);
- }
-
- /**
- * Lookup a hyperlink by its unique id
- *
- * @param id hyperlink id
- * @return found <code>ExHyperlink</code> or <code>null</code>
- */
- public ExHyperlink get(int id){
- for(int i=0; i<_children.length; i++) {
- if(_children[i] instanceof ExHyperlink) {
- ExHyperlink rec = (ExHyperlink)_children[i];
- if (rec.getExHyperlinkAtom().getNumber() == id){
- return rec;
- }
- }
- }
- return null;
- }
- }
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