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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/javax/swing/text/AttributeSet.java
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+/* AttributeSet.java --
+ Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+package javax.swing.text;
+
+import java.util.Enumeration;
+
+/**
+ * A set of attributes. An attribute has a key and a value. They typically
+ * describe features of a piece of text that make up its graphical
+ * representation.
+ *
+ * An <code>AttributeSet</code> may have a resolving parent,
+ * that is another <code>AttributeSet</code> that is searched for attribute
+ * keys that are not stored locally in this <code>AttributeSet</code>.
+ *
+ * @author original author unknown
+ * @author Roman Kennke (roman@kennke.org)
+ */
+public interface AttributeSet
+{
+ /**
+ * Used as keys to identify character-run attributes.
+ */
+ static interface CharacterAttribute
+ {
+ // This interface is a marker interface and has no methods.
+ }
+
+ /**
+ * Used as keys to identify color attributes.
+ */
+ static interface ColorAttribute
+ {
+ // This interface is a marker interface and has no methods.
+ }
+
+ /**
+ * Used as keys to identify font attributes.
+ */
+ static interface FontAttribute
+ {
+ // This interface is a marker interface and has no methods.
+ }
+
+ /**
+ * Used as keys to identify paragraph level attributes.
+ */
+ static interface ParagraphAttribute
+ {
+ // This interface is a marker interface and has no methods.
+ }
+
+ /**
+ * Key of the attribute that is used to describe the name of an
+ * <code>AttributeSet</code>.
+ */
+ Object NameAttribute = StyleConstants.NameAttribute;
+
+ /**
+ * Key of the attribute that is used to identify the resolving parent of
+ * an <code>AttributeSet</code>.
+ */
+ Object ResolveAttribute = StyleConstants.ResolveAttribute;
+
+ /**
+ * Returns <code>true</code> if this <code>AttributeSet</code> contains
+ * an attribute with the specified <code>name</code> and <code>value</code>,
+ * <code>false</code> otherwise.
+ *
+ * @param name the name of the requested attribute
+ * @param value the value of the requested attribute
+ *
+ * @return <code>true</code> if this <code>AttributeSet</code> contains
+ * an attribute with the specified <code>name</code> and
+ * <code>value</code>, <code>false</code> otherwise
+ */
+ boolean containsAttribute(Object name, Object value);
+
+ /**
+ * Returns <code>true</code> of this <code>AttributeSet</code> contains all
+ * of the specified <code>attributes</code>.
+ *
+ * @param attributes the requested attributes
+ *
+ * @return <code>true</code> of this <code>AttributeSet</code> contains all
+ * of the specified <code>attributes</code>
+ */
+ boolean containsAttributes(AttributeSet attributes);
+
+ /**
+ * Creates and returns a copy of this <code>AttributeSet</code>.
+ *
+ * @return a copy of this <code>AttributeSet</code>
+ */
+ AttributeSet copyAttributes();
+
+ /**
+ * Returns the attribute with the specified <code>key</code> or
+ * <code>null</code> if no such attribute is defined in this
+ * <code>AttributeSet</code> and its resolving parents.
+ *
+ * @param key the key of the attribute that is looked up
+ *
+ * @return the attribute with the specified <code>key</code> or
+ * <code>null</code> if no such attribute is defined in this
+ * <code>AttributeSet</code> and its resolving parents
+ */
+ Object getAttribute(Object key);
+
+ /**
+ * Returns the number of attributes that are stored locally in this
+ * <code>AttributeSet</code>.
+ *
+ * @return the number of attributes that are stored locally in this
+ * <code>AttributeSet</code>
+ */
+ int getAttributeCount();
+
+ /**
+ * Returns the names of the attributes that are stored in this
+ * <code>AttributeSet</code>.
+ *
+ * @return the names of the attributes that are stored in this
+ * <code>AttributeSet</code>
+ */
+ Enumeration<?> getAttributeNames();
+
+ /**
+ * Returns the resolving parent of this <code>AttributeSet</code>.
+ * If a key is not stored locally, then a {@link #getAttribute(Object)}
+ * request is resolved up in the resolving parent of this
+ * <code>AttributeSet</code>.
+ *
+ * @return the resolving parent of this <code>AttributeSet</code>
+ */
+ AttributeSet getResolveParent();
+
+ /**
+ * Returns <code>true</code> if an attribute with the specified name is
+ * defined locally in this <code>AttributeSet</code>, without resolving
+ * through the resolving parents.
+ *
+ * @return <code>true</code> if an attribute with the specified name is
+ * defined locally in this <code>AttributeSet</code>
+ */
+ boolean isDefined(Object attrName);
+
+ /**
+ * Returns <code>true</code> if all of the attributes in <code>attr</code>
+ * are equal to the attributes in this <code>AttributeSet</code>,
+ * <code>false</code> otherwise.
+ *
+ * @param attr the attributes to be compared to <code>this</code>
+ *
+ * @return <code>true</code> if all of the attributes in <code>attr</code>
+ * are equal to the attributes in this <code>AttributeSet</code>,
+ * <code>false</code> otherwise
+ */
+ boolean isEqual(AttributeSet attr);
+}