Showing the changes to java/pkg/sun/font/AttributeMap.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,101 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 2004, 2005, Oracle and/or its affiliates. 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. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * 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 | +} | |