FieldReferenceConverter (GWT Javadoc)

Overview

Package

Class

Use

Deprecated

Help

GWT 2.7.0

PREV CLASS NEXT CLASS

FRAMES NO FRAMES

SUMMARY: NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

com.google.gwt.uibinder.attributeparsers
Class FieldReferenceConverter

java.lang.Object
  com.google.gwt.uibinder.attributeparsers.FieldReferenceConverter

public class FieldReferenceConverter
extends java.lang.Object
extends java.lang.Object

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

FieldReferenceConverter(com.google.gwt.uibinder.rebind.FieldManager fieldManager)

Parameters:: fieldManager - to register parsed references with. May be null

Method Detail

countFieldReferences

public static int countFieldReferences(java.lang.String string)

Returns the number of field references in the given string.

expressionToPath

public 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.

hasFieldReferences

public static boolean hasFieldReferences(java.lang.String string)

Returns true if the given string holds one or more field references.

convert

public java.lang.String convert(java.lang.String in,
                                FieldReferenceConverter.Delegate delegate)

Throws:: FieldReferenceConverter.IllegalFieldReferenceException - if the delegate does

convert

public java.lang.String convert(com.google.gwt.uibinder.rebind.XMLElement source,
                                java.lang.String in,
                                FieldReferenceConverter.Delegate delegate)