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Java Source | 1995-05-15 | 2.1 KB | 73 lines |
- /*
- * @(#)DocumentManager.java 1.22 95/03/14 Jonathan Payne
- *
- * Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Permission to use, copy, modify, and distribute this software
- * and its documentation for NON-COMMERCIAL purposes and without
- * fee is hereby granted provided that this copyright notice
- * appears in all copies. Please refer to the file "copyright.html"
- * for further important copyright and licensing information.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
- * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
- * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
- */
-
- package browser;
-
- import java.util.*;
- import net.www.html.URL;
- import net.www.html.PostURL;
-
- /**
- * Class DocumentManager manages multiple html documents. It
- * maintains a list of visited documents, and fetches ones which are
- * not currently known. Instances of DocumentManager are created
- * by WRWindow to manage the documents of that window. Documents are
- * fetched in the background, and multiple documents may be fetched at
- * the same time.<p>
- * This class was never completed.
- *
- * @version 1.22, 14 Mar 1995
- * @author Jonathan Payne
- */
- public
- class DocumentManager {
- /** Document cache, indexed by URL. */
- static Hashtable documentCache = new Hashtable();
-
- /** Window we're managing documents for. */
- WRWindow wrWindow;
-
- DocumentManager(WRWindow w) {
- wrWindow = w;
- }
-
- static public void unCacheDocument(URL url) {
- documentCache.remove(url);
-
- }
-
- static public void cacheDocument(DocumentInfo info) {
- URL url = info.url;
-
- if (url.canCache() && info.canCache() && info.doc != null) {
- documentCache.put(url, info.doc);
- }
- }
-
- DocumentInfo newDocument(URL url) {
- DocumentRef docRef = null;
- DocumentInfo info;
-
- if (url.canCache())
- docRef = (DocumentRef) documentCache.get(url);
-
- return new DocumentInfo(docRef, url);
- }
- }
-