Module com.aoapps.taglib

Package com.aoapps.taglib

Class AttributeUtils

java.lang.Object

com.aoapps.taglib.AttributeUtils

public final class AttributeUtils
extends Object

Author:

AO Industries, Inc.

Field Summary

Fields

Modifier and Type	Field	Description
static final Resources	RESOURCES

Method Summary

Modifier and Type	Method	Description
static boolean	appendWidthStyle(String width, Appendable out)	Appends a width style, while automatically appending "px" to any non-zero integer.
static String	getWidthStyle(String width)	Gets a width style, while automatically appending "px" to any non-zero integer.
static JspTagException	newDynamicAttributeFailedException(String uri, String localName, Object value, List<String> expectedPatterns)	Creates the exception for dynamic attribute failed.
static <T> T	requireAttributeParent(String fromTagName, JspTag from, String attribute, Class<? extends T> clazz)	Finds the attribute parent tag of the provided class (or subclass).
static <T> T	resolveValue(ValueExpression expression, Class<T> type, ELContext elContext)	Deprecated. Please use ElUtils.resolveValue(jakarta.el.ValueExpression, java.lang.Class, jakarta.el.ELContext) directly.
static <T> T	resolveValue(Object value, Class<T> type, ELContext elContext)	Deprecated. Please use ElUtils.resolveValue(java.lang.Object, java.lang.Class, jakarta.el.ELContext) directly.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

RESOURCES

public static final Resources RESOURCES

Method Details

requireAttributeParent

public static <T> T requireAttributeParent(String fromTagName,
 JspTag from,
 String attribute,
 Class<? extends T> clazz)
                                    throws NeedAttributeParentException

Finds the attribute parent tag of the provided class (or subclass).

Returns:

the parent tag

Throws:

NeedAttributeParentException - if parent not found

See Also:

• JspTagUtils.findAncestor(jakarta.servlet.jsp.tagext.JspTag, java.lang.Class)

resolveValue

@Deprecated
public static <T> T resolveValue(ValueExpression expression,
 Class<T> type,
 ELContext elContext)

Deprecated.

Please use ElUtils.resolveValue(jakarta.el.ValueExpression, java.lang.Class, jakarta.el.ELContext) directly.

Evaluates an expression then casts to the provided type.

resolveValue

@Deprecated
public static <T> T resolveValue(Object value,
 Class<T> type,
 ELContext elContext)

Deprecated.

Please use ElUtils.resolveValue(java.lang.Object, java.lang.Class, jakarta.el.ELContext) directly.

Casts or evaluates an expression then casts to the provided type.

appendWidthStyle

public static boolean appendWidthStyle(String width,
 Appendable out)
                                throws IOException

Appends a width style, while automatically appending "px" to any non-zero integer. Encoding for XML attribute context is performed.

Returns:

true when printed the style

Throws:

IOException

getWidthStyle

public static String getWidthStyle(String width)

Gets a width style, while automatically appending "px" to any non-zero integer. No encoding is performed.

Returns:

The style or null when none

newDynamicAttributeFailedException

public static JspTagException newDynamicAttributeFailedException(String uri,
 String localName,
 Object value,
 List<String> expectedPatterns)

Creates the exception for dynamic attribute failed. Does not throw it.