Spec-Zone .ru
спецификации, руководства, описания, API
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JavaTM 2 Platform Std. Ed. v1.3.1 |
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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.
MutableAttributeSet
Inner Class Summary | |
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 | |
static Object |
NameAttribute
Attribute name used to name the collection of attributes. |
static Object |
ResolveAttribute
Attribute name used to identifiy the resolving parent set of attributes, if one is defined. |
Method Summary | |
boolean |
containsAttribute(Object name,
Object value)
Returns true if this set contains this attribute with an equal value. |
boolean |
containsAttributes(AttributeSet attributes)
Returns true if this set contains all the attributes 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 contained in this set. |
Enumeration |
getAttributeNames()
Returns an enumeration over the names of the attributes 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. |
Field Detail |
public static final Object NameAttribute
public static final Object ResolveAttribute
Method Detail |
public int getAttributeCount()
public boolean isDefined(Object attrName)
attrName
- the attribute namepublic boolean isEqual(AttributeSet attr)
attr
- an attribute setpublic AttributeSet copyAttributes()
public Object getAttribute(Object key)
key
- the non-null key of the attribute bindingpublic Enumeration getAttributeNames()
public boolean containsAttribute(Object name, Object value)
name
- the non-null attribute namevalue
- the valuepublic boolean containsAttributes(AttributeSet attributes)
attributes
- the set of attributes to check againstpublic AttributeSet getResolveParent()
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JavaTM 2 Platform Std. Ed. v1.3.1 |
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