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Java Standard Edition (SE)

AttributeSet


javax.swing.text

Interface AttributeSet

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Interface and Description
      static interface  AttributeSet.CharacterAttribute
      This interface is the type signature that is expected to be present on any attribute key that contributes to character level presentation.
      static interface  AttributeSet.ColorAttribute
      This interface is the type signature that is expected to be present on any attribute key that contributes to presentation of color.
      static interface  AttributeSet.FontAttribute
      This interface is the type signature that is expected to be present on any attribute key that contributes to the determination of what font to use to render some text.
      static interface  AttributeSet.ParagraphAttribute
      This interface is the type signature that is expected to be present on any attribute key that contributes to the paragraph level presentation.
    • Field Summary

      Fields 
      Modifier and Type Field and Description
      static Object NameAttribute
      Attribute name used to name the collection of attributes.
      static Object ResolveAttribute
      Attribute name used to identify the resolving parent set of attributes, if one is defined.
    • Field Detail

      • NameAttribute

        static final Object NameAttribute
        Attribute name used to name the collection of attributes.
      • ResolveAttribute

        static final Object ResolveAttribute
        Attribute name used to identify the resolving parent set of attributes, if one is defined.
    • Method Detail

      • getAttributeCount

        int getAttributeCount()
        Returns the number of attributes that are defined locally in this set. Attributes that are defined in the parent set are not included.
        Returns:
        the number of attributes >= 0
      • isDefined

        boolean isDefined(Object attrName)
        Checks whether the named attribute has a value specified in the set without resolving through another attribute set.
        Parameters:
        attrName - the attribute name
        Returns:
        true if the attribute has a value specified
      • isEqual

        boolean isEqual(AttributeSet attr)
        Determines if the two attribute sets are equivalent.
        Parameters:
        attr - an attribute set
        Returns:
        true if the sets are equivalent
      • copyAttributes

        AttributeSet copyAttributes()
        Returns an attribute set that is guaranteed not to change over time.
        Returns:
        a copy of the attribute set
      • getAttribute

        Object getAttribute(Object key)
        Fetches the value of the given attribute. If the value is not found locally, the search is continued upward through the resolving parent (if one exists) until the value is either found or there are no more parents. If the value is not found, null is returned.
        Parameters:
        key - the non-null key of the attribute binding
        Returns:
        the value of the attribute, or null if not found
      • getAttributeNames

        Enumeration<?> getAttributeNames()
        Returns an enumeration over the names of the attributes that are defined locally in the set. Names of attributes defined in the resolving parent, if any, are not included. The values of the Enumeration may be anything and are not constrained to a particular Object type.

        This method never returns null. For a set with no attributes, it returns an empty Enumeration.

        Returns:
        the names
      • containsAttribute

        boolean containsAttribute(Object name,
                                  Object value)
        Returns true if this set defines an attribute with the same name and an equal value. If such an attribute is not found locally, it is searched through in the resolving parent hierarchy.
        Parameters:
        name - the non-null attribute name
        value - the value
        Returns:
        true if the set defines the attribute with an equal value, either locally or through its resolving parent
        Throws:
        NullPointerException - if either name or value is null
      • containsAttributes

        boolean containsAttributes(AttributeSet attributes)
        Returns true if this set defines all the attributes from the given set with equal values. If an attribute is not found locally, it is searched through in the resolving parent hierarchy.
        Parameters:
        attributes - the set of attributes to check against
        Returns:
        true if this set defines all the attributes with equal values, either locally or through its resolving parent
        Throws:
        NullPointerException - if attributes is null
      • getResolveParent

        AttributeSet getResolveParent()
        Gets the resolving parent.
        Returns:
        the parent


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