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java.lang.Objectcom.google.gwt.uibinder.attributeparsers.FieldReferenceConverter
public class FieldReferenceConverter
Deals with field references, e.g. the bits in braces here: <div
class="{style.enabled} fancy {style.impressive}" />, by converting
them to java expressions (with the help of a
Delegate).
A field reference is one or more segments separated by dots. The first
segment is considered to be a reference to a ui field, and succeeding
segments are method calls. So, "{able.baker.charlie}" becomes
"able.baker().charlie()".
A field reference starts with '{' and is followed immediately by a character that can legally start a java identifier—that is a letter, $, or underscore. Braces not followed by such a character are left in place.
For convenience when dealing with generated CssResources, field segments with dashes are converted to camel case. That is, {able.baker-charlie} is the same as {able.bakerCharlie}
Opening braces may be escape by doubling them. That is, "{{foo}" will converted to "{foo}", with no field reference detected.
| Nested Class Summary | |
|---|---|
(package private) static interface |
FieldReferenceConverter.Delegate
Responsible for the bits around and between the field references. |
static class |
FieldReferenceConverter.IllegalFieldReferenceException
May be thrown by the Delegate for badly formatted input. |
| Constructor Summary | |
|---|---|
FieldReferenceConverter(com.google.gwt.uibinder.rebind.FieldManager fieldManager)
|
|
| Method Summary | |
|---|---|
java.lang.String |
convert(java.lang.String in,
FieldReferenceConverter.Delegate delegate)
|
java.lang.String |
convert(com.google.gwt.uibinder.rebind.XMLElement source,
java.lang.String in,
FieldReferenceConverter.Delegate delegate)
|
static int |
countFieldReferences(java.lang.String string)
Returns the number of field references in the given string. |
static java.lang.String |
expressionToPath(java.lang.String expression)
Reverses most of the work of convert(java.lang.String, com.google.gwt.uibinder.attributeparsers.FieldReferenceConverter.Delegate), turning a java expresion
back into a dotted path. |
static boolean |
hasFieldReferences(java.lang.String string)
Returns true if the given string holds one or more field references. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
FieldReferenceConverter(com.google.gwt.uibinder.rebind.FieldManager fieldManager)
fieldManager - to register parsed references with. May be null| Method Detail |
|---|
public static int countFieldReferences(java.lang.String string)
public static java.lang.String expressionToPath(java.lang.String expression)
convert(java.lang.String, com.google.gwt.uibinder.attributeparsers.FieldReferenceConverter.Delegate), turning a java expresion
back into a dotted path.
public static boolean hasFieldReferences(java.lang.String string)
public java.lang.String convert(java.lang.String in,
FieldReferenceConverter.Delegate delegate)
FieldReferenceConverter.IllegalFieldReferenceException - if the delegate does
public java.lang.String convert(com.google.gwt.uibinder.rebind.XMLElement source,
java.lang.String in,
FieldReferenceConverter.Delegate delegate)
FieldReferenceConverter.IllegalFieldReferenceException - if the delegate does
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