J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004-2005 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | What is the dead simplest thing to do? |
| 28 | Extend AbstractMap and don't optimize for anything. |
| 29 | |
| 30 | The only new api is 'getValues()' which returns the values struct as |
| 31 | long as no map api has been called. If any map api is called, |
| 32 | create a real map and forward to it, and nuke values because of the |
| 33 | possibility that the map has been changed. This is easier than |
| 34 | trying to create a map that only clears values if the map has been |
| 35 | changed, or implementing the map API directly on top of the values |
| 36 | struct. We can always do that later if need be. |
| 37 | */ |
| 38 | |
| 39 | package sun.font; |
| 40 | |
| 41 | import java.awt.Paint; |
| 42 | import java.awt.font.GraphicAttribute; |
| 43 | import java.awt.font.NumericShaper; |
| 44 | import java.awt.font.TextAttribute; |
| 45 | import java.awt.font.TransformAttribute; |
| 46 | import java.awt.geom.AffineTransform; |
| 47 | import java.awt.im.InputMethodHighlight; |
| 48 | import java.text.AttributedCharacterIterator.Attribute; |
| 49 | import java.util.AbstractMap; |
| 50 | import java.util.HashMap; |
| 51 | import java.util.Map; |
| 52 | import java.util.Set; |
| 53 | import java.util.Map.Entry; |
| 54 | |
| 55 | import static sun.font.AttributeValues.*; |
| 56 | |
| 57 | public final class AttributeMap extends AbstractMap<TextAttribute, Object> { |
| 58 | private AttributeValues values; |
| 59 | private Map<TextAttribute, Object> delegateMap; |
| 60 | |
| 61 | public AttributeMap(AttributeValues values) { |
| 62 | this.values = values; |
| 63 | } |
| 64 | |
| 65 | public Set<Entry<TextAttribute, Object>> entrySet() { |
| 66 | return delegate().entrySet(); |
| 67 | } |
| 68 | |
| 69 | public Object put(TextAttribute key, Object value) { |
| 70 | return delegate().put(key, value); |
| 71 | } |
| 72 | |
| 73 | // internal API |
| 74 | public AttributeValues getValues() { |
| 75 | return values; |
| 76 | } |
| 77 | |
| 78 | private static boolean first = false; // debug |
| 79 | private Map<TextAttribute, Object> delegate() { |
| 80 | if (delegateMap == null) { |
| 81 | if (first) { |
| 82 | first = false; |
| 83 | Thread.dumpStack(); |
| 84 | } |
| 85 | delegateMap = values.toMap(new HashMap<TextAttribute, Object>(27)); |
| 86 | |
| 87 | // nuke values, once map is accessible it might be mutated and values would |
| 88 | // no longer reflect its contents |
| 89 | values = null; |
| 90 | } |
| 91 | |
| 92 | return delegateMap; |
| 93 | } |
| 94 | |
| 95 | public String toString() { |
| 96 | if (values != null) { |
| 97 | return "map of " + values.toString(); |
| 98 | } |
| 99 | return super.toString(); |
| 100 | } |
| 101 | } |