All Known Subinterfaces:

MutableAttributeSet, Style

All Known Implementing Classes:

AbstractDocument.AbstractElement, AbstractDocument.BranchElement, AbstractDocument.LeafElement, DefaultStyledDocument.SectionElement, HTMLDocument.BlockElement, HTMLDocument.RunElement, SimpleAttributeSet, StyleContext.NamedStyle, StyleContext.SmallAttributeSet
```
public interface AttributeSet
```
A collection of unique attributes. This is a read-only, immutable interface. An attribute is basically a key and a value assigned to the key. The collection may represent something like a style run, a logical style, etc. These are generally used to describe features that will contribute to some graphical representation such as a font. The set of possible keys is unbounded and can be anything. Typically View implementations will respond to attribute definitions and render something to represent the attributes.
Attributes can potentially resolve in a hierarchy. If a key doesn't resolve locally, and a resolving parent exists, the key will be resolved through the parent.

See Also:
MutableAttributeSet

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.

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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.

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Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`containsAttribute(Object name, Object value)` Returns `true` if this set defines an attribute with the same name and an equal value.
`boolean`	`containsAttributes(AttributeSet attributes)` Returns `true` if this set defines all the attributes from the given set with equal values.
`AttributeSet`	`copyAttributes()` Returns an attribute set that is guaranteed not to change over time.
`Object`	`getAttribute(Object key)` Fetches the value of the given attribute.
`int`	`getAttributeCount()` Returns the number of attributes that are defined locally in this set.
`Enumeration<?>`	`getAttributeNames()` Returns an enumeration over the names of the attributes that are defined locally in the set.
`AttributeSet`	`getResolveParent()` Gets the resolving parent.
`boolean`	`isDefined(Object attrName)` Checks whether the named attribute has a value specified in the set without resolving through another attribute set.
`boolean`	`isEqual(AttributeSet attr)` Determines if the two attribute sets are equivalent.

Eerste pagina van API Java Inhoudsopgave Haut

- 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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Bij voorbaat dank.

Document heeft de 11/06/2005 gemaakt, de laatste keer de 04/03/2020 gewijzigd
Bron van het afgedrukte document:https://www.gaudry.be/nl/java-api-rf-javax/swing/text/AttributeSet.html

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Referenties

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Inhoudsopgave Haut

Interface AttributeSet

Nested Class Summary

Field Summary

Method Summary

Field Detail

NameAttribute

ResolveAttribute

Method Detail

getAttributeCount

isDefined

isEqual

copyAttributes

getAttribute

getAttributeNames

containsAttribute

containsAttributes

getResolveParent

Referenties