File	Doc	Category	Size	Date	Package
SimpleAttributeSet.java	API Doc	Java SE 5 API	10197	Fri Aug 26 14:58:16 BST 2005	javax.swing.text

SimpleAttributeSet

• java.lang.Object

Fields Summary
public static final AttributeSet	EMPTY An empty attribute set.
private transient Hashtable	table
private static Enumeration	emptyEnumeration

Constructors Summary
public SimpleAttributeSet() Creates a new attribute set.
public SimpleAttributeSet(AttributeSet source) Creates a new attribute set based on a supplied set of attributes. param source the set of attributes addAttributes(source);
private SimpleAttributeSet(Hashtable table) this.table = table;

Methods Summary
public void	addAttribute(java.lang.Object name, java.lang.Object value) Adds an attribute to the list. param name the attribute name param value the attribute value table.put(name, value);
public void	addAttributes(javax.swing.text.AttributeSet attributes) Adds a set of attributes to the list. param attributes the set of attributes to add Enumeration names = attributes.getAttributeNames(); while (names.hasMoreElements()) { Object name = names.nextElement(); addAttribute(name, attributes.getAttribute(name)); }
public java.lang.Object	clone() Clones a set of attributes. return the new set of attributes SimpleAttributeSet attr; try { attr = (SimpleAttributeSet) super.clone(); attr.table = (Hashtable) table.clone(); } catch (CloneNotSupportedException cnse) { attr = null; } return attr;
public boolean	containsAttribute(java.lang.Object name, java.lang.Object value) Checks whether the attribute list contains a specified attribute name/value pair. param name the name param value the value return true if the name/value pair is in the list return value.equals(getAttribute(name));
public boolean	containsAttributes(javax.swing.text.AttributeSet attributes) Checks whether the attribute list contains all the specified name/value pairs. param attributes the attribute list return true if the list contains all the name/value pairs boolean result = true; Enumeration names = attributes.getAttributeNames(); while (result && names.hasMoreElements()) { Object name = names.nextElement(); result = attributes.getAttribute(name).equals(getAttribute(name)); } return result;
public javax.swing.text.AttributeSet	copyAttributes() Makes a copy of the attributes. return the copy return (AttributeSet) clone();
public boolean	equals(java.lang.Object obj) Compares this object to the specified object. The result is true if the object is an equivalent set of attributes. param obj the object to compare this attribute set with return true if the objects are equal; false otherwise if (this == obj) { return true; } if (obj instanceof AttributeSet) { AttributeSet attrs = (AttributeSet) obj; return isEqual(attrs); } return false;
public java.lang.Object	getAttribute(java.lang.Object name) Gets the value of an attribute. param name the attribute name return the value Object value = table.get(name); if (value == null) { AttributeSet parent = getResolveParent(); if (parent != null) { value = parent.getAttribute(name); } } return value;
public int	getAttributeCount() Gets a count of the number of attributes. return the count return table.size();
public java.util.Enumeration	getAttributeNames() Gets the names of the attributes in the set. return the names as an Enumeration return table.keys();
private static java.util.Enumeration	getEmptyEnumeration() if (emptyEnumeration == null) { emptyEnumeration = new Enumeration() { public boolean hasMoreElements() { return false; } public Object nextElement() { throw new NoSuchElementException("No more elements"); } }; } return emptyEnumeration;
public javax.swing.text.AttributeSet	getResolveParent() Gets the resolving parent. This is the set of attributes to resolve through if an attribute isn't defined locally. This is null if there are no other sets of attributes to resolve through. return the parent return (AttributeSet) table.get(StyleConstants.ResolveAttribute);
public int	hashCode() Returns a hashcode for this set of attributes. return a hashcode value for this set of attributes. return table.hashCode();
public boolean	isDefined(java.lang.Object attrName) Tells whether a given attribute is defined. param attrName the attribute name return true if the attribute is defined return table.containsKey(attrName);
public boolean	isEmpty() Checks whether the set of attributes is empty. return true if the set is empty else false return table.isEmpty();
public boolean	isEqual(javax.swing.text.AttributeSet attr) Compares two attribute sets. param attr the second attribute set return true if the sets are equal, false otherwise return ((getAttributeCount() == attr.getAttributeCount()) && containsAttributes(attr));
private void	readObject(java.io.ObjectInputStream s) s.defaultReadObject(); table = new Hashtable(3); StyleContext.readAttributeSet(s, this);
public void	removeAttribute(java.lang.Object name) Removes an attribute from the list. param name the attribute name table.remove(name);
public void	removeAttributes(java.util.Enumeration names) Removes a set of attributes from the list. param names the set of names to remove while (names.hasMoreElements()) removeAttribute(names.nextElement());
public void	removeAttributes(javax.swing.text.AttributeSet attributes) Removes a set of attributes from the list. param attributes the set of attributes to remove if (attributes == this) { table.clear(); } else { Enumeration names = attributes.getAttributeNames(); while (names.hasMoreElements()) { Object name = names.nextElement(); Object value = attributes.getAttribute(name); if (value.equals(getAttribute(name))) removeAttribute(name); } }
public void	setResolveParent(javax.swing.text.AttributeSet parent) Sets the resolving parent. param parent the parent addAttribute(StyleConstants.ResolveAttribute, parent);
public java.lang.String	toString() Converts the attribute set to a String. return the string String s = ""; Enumeration names = getAttributeNames(); while (names.hasMoreElements()) { Object key = names.nextElement(); Object value = getAttribute(key); if (value instanceof AttributeSet) { // don't go recursive s = s + key + "=**AttributeSet** "; } else { s = s + key + "=" + value + " "; } } return s;
private void	writeObject(java.io.ObjectOutputStream s) s.defaultWriteObject(); StyleContext.writeAttributeSet(s, this);