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Diffstat (limited to 'libjava/classpath/javax/swing/text/SimpleAttributeSet.java')
| -rw-r--r-- | libjava/classpath/javax/swing/text/SimpleAttributeSet.java | 415 |
1 files changed, 0 insertions, 415 deletions
diff --git a/libjava/classpath/javax/swing/text/SimpleAttributeSet.java b/libjava/classpath/javax/swing/text/SimpleAttributeSet.java deleted file mode 100644 index 0229901..0000000 --- a/libjava/classpath/javax/swing/text/SimpleAttributeSet.java +++ /dev/null @@ -1,415 +0,0 @@ -/* SimpleAttributeSet.java -- - Copyright (C) 2004, 2005, 2006 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.io.Serializable; -import java.util.Enumeration; -import java.util.Hashtable; - -/** - * A set of attributes. - */ -public class SimpleAttributeSet - implements MutableAttributeSet, Serializable, Cloneable -{ - /** The serialization UID (compatible with JDK1.5). */ - private static final long serialVersionUID = 8267656273837665219L; - - /** - * An empty attribute set. - */ - public static final AttributeSet EMPTY = new EmptyAttributeSet(); - - /** Storage for the attributes. */ - Hashtable tab; - - /** - * Creates a new attribute set that is initially empty. - */ - public SimpleAttributeSet() - { - tab = new Hashtable(); - } - - /** - * Creates a new <code>SimpleAttributeSet</code> with the same attributes - * and resolve parent as the specified set. - * - * @param a the attributes (<code>null</code> not permitted). - * - * @throws NullPointerException if <code>a</code> is <code>null</code>. - */ - public SimpleAttributeSet(AttributeSet a) - { - tab = new Hashtable(); - addAttributes(a); - } - - /** - * Adds an attribute with the given <code>name</code> and <code>value</code> - * to the set. If the set already contains an attribute with the given - * <code>name</code>, the attribute value is updated. - * - * @param name the attribute name (<code>null</code> not permitted). - * @param value the value (<code>null</code> not permitted). - * - * @throws NullPointerException if either argument is <code>null</code>. - */ - public void addAttribute(Object name, Object value) - { - tab.put(name, value); - } - - /** - * Adds all the attributes from <code>attributes</code> to this set. - * - * @param attributes the set of attributes to add (<code>null</code> not - * permitted). - * - * @throws NullPointerException if <code>attributes</code> is - * <code>null</code>. - */ - public void addAttributes(AttributeSet attributes) - { - Enumeration e = attributes.getAttributeNames(); - while (e.hasMoreElements()) - { - Object name = e.nextElement(); - Object val = attributes.getAttribute(name); - tab.put(name, val); - } - } - - /** - * Returns a clone of the attribute set. - * - * @return A clone of the attribute set. - */ - public Object clone() - { - SimpleAttributeSet attr = null; - try - { - attr = (SimpleAttributeSet) super.clone(); - attr.tab = (Hashtable) tab.clone(); - } - catch (CloneNotSupportedException ex) - { - assert false; - } - return attr; - } - - /** - * Returns true if the given name and value represent an attribute - * found either in this AttributeSet or in its resolve parent hierarchy. - * @param name the key for the attribute - * @param value the value for the attribute - * @return true if the attribute is found here or in this set's resolve - * parent hierarchy - */ - public boolean containsAttribute(Object name, Object value) - { - if (value == null) - throw new NullPointerException("Null 'value' argument."); - if (tab.containsKey(name)) - return tab.get(name).equals(value); - else - { - AttributeSet p = getResolveParent(); - if (p != null) - return p.containsAttribute(name, value); - else - return false; - } - } - - /** - * Returns true if the given name and value are found in this AttributeSet. - * Does not check the resolve parent. - * @param name the key for the attribute - * @param value the value for the attribute - * @return true if the attribute is found in this AttributeSet - */ - boolean containsAttributeLocally(Object name, Object value) - { - return tab.containsKey(name) - && tab.get(name).equals(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> - */ - public boolean containsAttributes(AttributeSet attributes) - { - Enumeration e = attributes.getAttributeNames(); - while (e.hasMoreElements()) - { - Object name = e.nextElement(); - Object val = attributes.getAttribute(name); - if (! containsAttribute(name, val)) - return false; - } - return true; - } - - /** - * Creates and returns a copy of this <code>AttributeSet</code>. - * - * @return a copy of this <code>AttributeSet</code> - */ - public AttributeSet copyAttributes() - { - return (AttributeSet) clone(); - } - - /** - * Checks this set for equality with an arbitrary object. - * - * @param obj the object (<code>null</code> permitted). - * - * @return <code>true</code> if this set is equal to <code>obj</code>, and - * <code>false</code> otherwise. - */ - public boolean equals(Object obj) - { - return - (obj instanceof AttributeSet) - && this.isEqual((AttributeSet) obj); - } - - /** - * Returns the value of the specified attribute, or <code>null</code> if - * there is no attribute with that name. If the attribute is not defined - * directly in this set, the parent hierarchy (if there is one) will be - * used. - * - * @param name the attribute (<code>null</code> not permitted). - * - * @throws NullPointerException if <code>name</code> is <code>null</code>. - */ - public Object getAttribute(Object name) - { - Object val = tab.get(name); - if (val != null) - return val; - - AttributeSet p = getResolveParent(); - if (p != null) - return p.getAttribute(name); - - return null; - } - - /** - * Returns the number of attributes stored in this set, plus 1 if a parent - * has been specified (the reference to the parent is stored as a special - * attribute). The attributes stored in the parent do NOT contribute - * to the count. - * - * @return The attribute count. - */ - public int getAttributeCount() - { - return tab.size(); - } - - /** - * Returns an enumeration of the attribute names. - * - * @return An enumeration of the attribute names. - */ - public Enumeration<?> getAttributeNames() - { - return tab.keys(); - } - - /** - * Returns the resolving parent. - * - * @return The resolving parent (possibly <code>null</code>). - * - * @see #setResolveParent(AttributeSet) - */ - public AttributeSet getResolveParent() - { - return (AttributeSet) tab.get(ResolveAttribute); - } - - /** - * Returns a hash code for this instance. - * - * @return A hash code. - */ - public int hashCode() - { - return tab.hashCode(); - } - - /** - * Returns <code>true</code> if the given attribute is defined in this set, - * and <code>false</code> otherwise. The parent attribute set is not - * checked. - * - * @param attrName the attribute name (<code>null</code> not permitted). - */ - public boolean isDefined(Object attrName) - { - return tab.containsKey(attrName); - } - - /** - * Returns <code>true</code> if the set contains no attributes, and - * <code>false</code> otherwise. Note that the resolving parent is - * stored as an attribute, so this method will return <code>false</code> if - * a resolving parent is set. - * - * @return <code>true</code> if the set contains no attributes, and - * <code>false</code> otherwise. - */ - public boolean isEmpty() - { - return tab.isEmpty(); - } - - /** - * Returns true if the given set has the same number of attributes - * as this set and <code>containsAttributes(attr)</code> returns - * <code>true</code>. - * - * @param attr the attribute set (<code>null</code> not permitted). - * - * @return A boolean. - * - * @throws NullPointerException if <code>attr</code> is <code>null</code>. - */ - public boolean isEqual(AttributeSet attr) - { - return getAttributeCount() == attr.getAttributeCount() - && this.containsAttributes(attr); - } - - /** - * Removes the attribute with the specified <code>name</code>, if this - * attribute is defined. This method will only remove an attribute from - * this set, not from the resolving parent. - * - * @param name the attribute name (<code>null</code> not permitted). - * - * @throws NullPointerException if <code>name</code> is <code>null</code>. - */ - public void removeAttribute(Object name) - { - tab.remove(name); - } - - /** - * Removes attributes from this set if they are found in the - * given set. Only attributes whose key AND value are removed. - * Removes attributes only from this set, not from the resolving parent. - * Since the resolving parent is stored as an attribute, if - * <code>attributes</code> has the same resolving parent as this set, the - * parent will be removed from this set. - * - * @param attributes the attributes (<code>null</code> not permitted). - */ - public void removeAttributes(AttributeSet attributes) - { - Enumeration e = attributes.getAttributeNames(); - while (e.hasMoreElements()) - { - Object name = e.nextElement(); - Object val = attributes.getAttribute(name); - if (containsAttributeLocally(name, val)) - removeAttribute(name); - } - } - - /** - * Removes the attributes listed in <code>names</code>. - * - * @param names the attribute names (<code>null</code> not permitted). - * - * @throws NullPointerException if <code>names</code> is <code>null</code> - * or contains any <code>null</code> values. - */ - public void removeAttributes(Enumeration<?> names) - { - while (names.hasMoreElements()) - { - removeAttribute(names.nextElement()); - } - } - - /** - * Sets the reolving parent for this set. When looking up an attribute, if - * it is not found in this set, then the resolving parent is also used for - * the lookup. - * <p> - * Note that the parent is stored as an attribute, and will contribute 1 to - * the count returned by {@link #getAttributeCount()}. - * - * @param parent the parent attribute set (<code>null</code> not permitted). - * - * @throws NullPointerException if <code>parent</code> is <code>null</code>. - * - * @see #setResolveParent(AttributeSet) - */ - public void setResolveParent(AttributeSet parent) - { - addAttribute(ResolveAttribute, parent); - } - - /** - * Returns a string representation of this instance, typically used for - * debugging purposes. - * - * @return A string representation of this instance. - */ - public String toString() - { - return tab.toString(); - } -} |