Module java.desktop
Package javax.swing.text

Class SimpleAttributeSet

java.lang.Object
javax.swing.text.SimpleAttributeSet
All Implemented Interfaces:
Serializable, Cloneable, AttributeSet, MutableAttributeSet
public class SimpleAttributeSet extends Object implements MutableAttributeSet, Serializable, Cloneable
A straightforward implementation of MutableAttributeSet using a hash table.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans package. Please see XMLEncoder.

  • Field Details

    • EMPTY

      public static final AttributeSet EMPTY
      An empty attribute set.

  • Constructor Details

    • SimpleAttributeSet

      public SimpleAttributeSet()
      Creates a new attribute set.

    • SimpleAttributeSet

      public SimpleAttributeSet​(AttributeSet source)
      Creates a new attribute set based on a supplied set of attributes.
      Parameters:
      source - the set of attributes

  • Method Details

    • isEmpty

      public boolean isEmpty()
      Checks whether the set of attributes is empty.
      Returns:
      true if the set is empty else false

    • getAttributeCount

      public int getAttributeCount()
      Gets a count of the number of attributes.
      Specified by:
      getAttributeCount in interface AttributeSet
      Returns:
      the count

    • isDefined

      public boolean isDefined​(Object attrName)
      Tells whether a given attribute is defined.
      Specified by:
      isDefined in interface AttributeSet
      Parameters:
      attrName - the attribute name
      Returns:
      true if the attribute is defined

    • isEqual

      public boolean isEqual​(AttributeSet attr)
      Compares two attribute sets.
      Specified by:
      isEqual in interface AttributeSet
      Parameters:
      attr - the second attribute set
      Returns:
      true if the sets are equal, false otherwise

    • copyAttributes

      public AttributeSet copyAttributes()
      Makes a copy of the attributes.
      Specified by:
      copyAttributes in interface AttributeSet
      Returns:
      the copy

    • getAttributeNames

      public Enumeration<?> getAttributeNames()
      Gets the names of the attributes in the set.
      Specified by:
      getAttributeNames in interface AttributeSet
      Returns:
      the names as an Enumeration

    • getAttribute

      public Object getAttribute​(Object name)
      Gets the value of an attribute.
      Specified by:
      getAttribute in interface AttributeSet
      Parameters:
      name - the attribute name
      Returns:
      the value

    • containsAttribute

      public boolean containsAttribute​(Object name, Object value)
      Checks whether the attribute list contains a specified attribute name/value pair.
      Specified by:
      containsAttribute in interface AttributeSet
      Parameters:
      name - the name
      value - the value
      Returns:
      true if the name/value pair is in the list

    • containsAttributes

      public boolean containsAttributes​(AttributeSet attributes)
      Checks whether the attribute list contains all the specified name/value pairs.
      Specified by:
      containsAttributes in interface AttributeSet
      Parameters:
      attributes - the attribute list
      Returns:
      true if the list contains all the name/value pairs

    • addAttribute

      public void addAttribute​(Object name, Object value)
      Adds an attribute to the list.
      Specified by:
      addAttribute in interface MutableAttributeSet
      Parameters:
      name - the attribute name
      value - the attribute value

    • addAttributes

      public void addAttributes​(AttributeSet attributes)
      Adds a set of attributes to the list.
      Specified by:
      addAttributes in interface MutableAttributeSet
      Parameters:
      attributes - the set of attributes to add

    • removeAttribute

      public void removeAttribute​(Object name)
      Removes an attribute from the list.
      Specified by:
      removeAttribute in interface MutableAttributeSet
      Parameters:
      name - the attribute name

    • removeAttributes

      public void removeAttributes​(Enumeration<?> names)
      Removes a set of attributes from the list.
      Specified by:
      removeAttributes in interface MutableAttributeSet
      Parameters:
      names - the set of names to remove

    • removeAttributes

      public void removeAttributes​(AttributeSet attributes)
      Removes a set of attributes from the list.
      Specified by:
      removeAttributes in interface MutableAttributeSet
      Parameters:
      attributes - the set of attributes to remove

    • getResolveParent

      public 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.
      Specified by:
      getResolveParent in interface AttributeSet
      Returns:
      the parent

    • setResolveParent

      public void setResolveParent​(AttributeSet parent)
      Sets the resolving parent.
      Specified by:
      setResolveParent in interface MutableAttributeSet
      Parameters:
      parent - the parent

    • clone

      public Object clone()
      Clones a set of attributes.
      Overrides:
      clone in class Object
      Returns:
      the new set of attributes
      See Also:
      Cloneable

    • hashCode

      public int hashCode()
      Returns a hashcode for this set of attributes.
      Overrides:
      hashCode in class Object
      Returns:
      a hashcode value for this set of attributes.
      See Also:
      Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

    • equals

      public boolean equals​(Object obj)
      Compares this object to the specified object. The result is true if the object is an equivalent set of attributes.
      Overrides:
      equals in class Object
      Parameters:
      obj - the object to compare this attribute set with
      Returns:
      true if the objects are equal; false otherwise
      See Also:
      Object.hashCode(), HashMap

    • toString

      public String toString()
      Converts the attribute set to a String.
      Overrides:
      toString in class Object
      Returns:
      the string