com.google.gwt.uibinder.rebind

Class UiBinderWriter

java.lang.Object

com.google.gwt.uibinder.rebind.UiBinderWriter

All Implemented Interfaces:

Statements

public class UiBinderWriter
extends Object
implements Statements

Writer for UiBinder generated classes.

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.gwt.uibinder.rebind.Statements

Statements.Empty

Field Summary

Fields inherited from interface com.google.gwt.uibinder.rebind.Statements

EMPTY

Constructor Summary

Constructors

Constructor and Description

UiBinderWriter(com.google.gwt.core.ext.typeinfo.JClassType baseClass, String implClassName, String templatePath, com.google.gwt.core.ext.typeinfo.TypeOracle oracle, MortalLogger logger, FieldManager fieldManager, MessagesWriter messagesWriter, DesignTimeUtils designTime, UiBinderContext uiBinderCtx, boolean useSafeHtmlTemplates, boolean useLazyWidgetBuilders, String binderUri, com.google.gwt.dev.resource.ResourceOracle resourceOracle)

Method Summary

Methods

Modifier and Type	Method and Description
void	addDetachStatement(String format, Object... args) Add a statement to be executed right after the current attached element is detached.
void	addInitStatement(String format, Object... params) Add a statement to be run after everything has been instantiated, in the style of String#format.
void	addStatement(String format, Object... args) Adds a statement to the block run after fields are declared, in the style of String#format.
static String	asCommaSeparatedList(String... args)
void	beginAttachedSection(String element) Begin a section where a new attachable element is being parsed--that is, one that will be constructed as a big innerHTML string, and then briefly attached to the dom to allow fields accessing its to be filled (at the moment, HasHTMLParser, HTMLPanelParser, and DomElementParser.).
String	declareDomField(XMLElement source, String fieldName, String ancestorField) Declare a field that will hold an Element instance.
String	declareDomIdHolder(String fieldName) Declare a variable that will be filled at runtime with a unique id, safe for use as a dom element's id attribute.
String	declareFieldIfNeeded(XMLElement elem) If this element has a gwt:field attribute, create a field for it of the appropriate type, and return the field name.
String	declareRenderableStamper() Declare a RenderableStamper instance that will be filled at runtime with a unique token.
String	declareTemplateCall(String html, String fieldName) Writes a new SafeHtml template to the generated BinderImpl.
String	detokenate(String betokened) Given a string containing tokens returned by tokenForStringExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String), tokenForSafeHtmlExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String) or declareDomField(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String, java.lang.String), return a string with those tokens replaced by the appropriate expressions.
void	die(String message) Post an error message and halt processing.
void	die(String message, Object... params) Post an error message and halt processing.
void	die(XMLElement context, String message, Object... params) Post an error message about a specific XMLElement and halt processing.
void	endAttachedSection() End the current attachable section.
void	ensureAttached() Ensure that the specified element is attached to the DOM.
void	ensureCurrentFieldAttached() Ensure that the specified field is attached to the DOM.
static String	escapeAttributeText(String text) Escape text that will be part of a string literal to be interpreted at runtime as an HTML attribute value.
static String	escapeText(String text, boolean preserveWhitespace) Escape text that will be part of a string literal to be interpreted at runtime as HTML, optionally preserving whitespace.
static String	escapeTextForJavaStringLiteral(String text) Escape characters that would mess up interpretation of this string as a string literal in generated code (that is, protect \, \n and " ).
com.google.gwt.core.ext.typeinfo.JClassType	findFieldType(XMLElement elem) Finds the JClassType that corresponds to this XMLElement, which must be a Widget or an Element.
void	genPropertySet(String fieldName, String propName, String value) Generates the code to set a property value (assumes that 'value' is a valid Java expression).
void	genStringPropertySet(String fieldName, String propName, String value) Generates the code to set a string property.
com.google.gwt.core.ext.typeinfo.JClassType	getBaseClass() The type we have been asked to generated, e.g.
ImplicitClientBundle	getBundleClass()
DesignTimeUtils	getDesignTime() Returns the DesignTimeUtils, not null.
FieldManager	getFieldManager()
MortalLogger	getLogger() Returns the logger, at least until we get get it handed off to parsers via constructor args.
MessagesWriter	getMessages() Get the MessagesWriter for this UI, generating it if necessary.
com.google.gwt.core.ext.typeinfo.TypeOracle	getOracle() Gets the type oracle.
OwnerClass	getOwnerClass()
String	getUiFieldAttributeName()
boolean	isBinderElement(XMLElement elem)
boolean	isElementAssignableTo(XMLElement elem, Class<?> possibleSuperclass)
boolean	isElementAssignableTo(XMLElement elem, com.google.gwt.core.ext.typeinfo.JClassType possibleSupertype)
boolean	isImportedElement(XMLElement elem)
boolean	isOwnerFieldLazyDomElement(String fieldName) Checks whether the given owner field name is a LazyDomElement or not.
boolean	isRenderableElement(XMLElement elem)
boolean	isRenderer()
boolean	isWidgetElement(XMLElement elem)
FieldWriter	parseElementToField(XMLElement elem) Parses the object associated with the specified element, and returns the field writer that will hold it.
void	setFieldInitializer(String fieldName, String factoryMethod) Gives the writer the initializer to use for this field instead of the default GWT.create call.
void	setFieldInitializerAsConstructor(String fieldName, String... args) Instructs the writer to initialize the field with a specific constructor invocation, instead of the default GWT.create call.
String	tokenForSafeConstant(XMLElement source, String expression) Like tokenForStringExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String), but used for runtime expressions that we trust to be safe to interpret at runtime as HTML without escaping, like translated messages with simple formatting.
String	tokenForSafeHtmlExpression(XMLElement source, String expression) Like tokenForStringExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String), but used for runtime SafeHtml instances.
String	tokenForSafeUriExpression(XMLElement source, String expression) Like tokenForStringExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String), but used for runtime SafeUri instances.
String	tokenForStringExpression(XMLElement source, String expression) Returns a string token that can be used in place the given expression inside any string literals.
boolean	useLazyWidgetBuilders()
boolean	useSafeHtmlTemplates()
void	warn(String message) Post a warning message.
void	warn(String message, Object... params) Post a warning message.
void	warn(XMLElement context, String message, Object... params) Post a warning message.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Constructor Detail

UiBinderWriter

public UiBinderWriter(com.google.gwt.core.ext.typeinfo.JClassType baseClass,
              String implClassName,
              String templatePath,
              com.google.gwt.core.ext.typeinfo.TypeOracle oracle,
              MortalLogger logger,
              FieldManager fieldManager,
              MessagesWriter messagesWriter,
              DesignTimeUtils designTime,
              UiBinderContext uiBinderCtx,
              boolean useSafeHtmlTemplates,
              boolean useLazyWidgetBuilders,
              String binderUri,
              com.google.gwt.dev.resource.ResourceOracle resourceOracle)
               throws com.google.gwt.core.ext.UnableToCompleteException

Throws:

com.google.gwt.core.ext.UnableToCompleteException

Method Detail

asCommaSeparatedList

public static String asCommaSeparatedList(String... args)

escapeAttributeText

public static String escapeAttributeText(String text)

Escape text that will be part of a string literal to be interpreted at runtime as an HTML attribute value.

escapeText

public static String escapeText(String text,
                boolean preserveWhitespace)

Escape text that will be part of a string literal to be interpreted at runtime as HTML, optionally preserving whitespace.

escapeTextForJavaStringLiteral

public static String escapeTextForJavaStringLiteral(String text)

Escape characters that would mess up interpretation of this string as a string literal in generated code (that is, protect \, \n and " ).

addDetachStatement

public void addDetachStatement(String format,
                      Object... args)

Add a statement to be executed right after the current attached element is detached. This is useful for doing things that might be expensive while the element is attached to the DOM.

Specified by:

addDetachStatement in interface Statements

Parameters:

format -

args -

See Also:

beginAttachedSection(String)

addInitStatement

public void addInitStatement(String format,
                    Object... params)

Add a statement to be run after everything has been instantiated, in the style of String#format.

Specified by:

addInitStatement in interface Statements

addStatement

public void addStatement(String format,
                Object... args)

Adds a statement to the block run after fields are declared, in the style of String#format.

Specified by:

addStatement in interface Statements

beginAttachedSection

public void beginAttachedSection(String element)

Begin a section where a new attachable element is being parsed--that is, one that will be constructed as a big innerHTML string, and then briefly attached to the dom to allow fields accessing its to be filled (at the moment, HasHTMLParser, HTMLPanelParser, and DomElementParser.).

Succeeding calls made to ensureAttached() and ensureCurrentFieldAttached() must refer to children of this element, until endAttachedSection() is called.

Parameters:

element - Java expression for the generated code that will return the dom element to be attached.

declareDomField

public String declareDomField(XMLElement source,
                     String fieldName,
                     String ancestorField)
                       throws com.google.gwt.core.ext.UnableToCompleteException

Declare a field that will hold an Element instance. Returns a token that the caller must set as the id attribute of that element in whatever innerHTML expression will reproduce it at runtime.

In the generated code, this token will be replaced by an expression to generate a unique dom id at runtime. Further code will be generated to be run after widgets are instantiated, to use that dom id in a getElementById call and assign the Element instance to its field.

Parameters:

fieldName - The name of the field being declared

ancestorField - The name of fieldName parent

Throws:

com.google.gwt.core.ext.UnableToCompleteException

declareDomIdHolder

public String declareDomIdHolder(String fieldName)
                          throws com.google.gwt.core.ext.UnableToCompleteException

Declare a variable that will be filled at runtime with a unique id, safe for use as a dom element's id attribute. For UiRenderer based code, elements corresponding to a ui:field, need and id initialized to a value that depends on the fieldName. For all other cases let fieldName be null.

Parameters:

fieldName - name of the field corresponding to this variable.

Returns:

that variable's name.

Throws:

com.google.gwt.core.ext.UnableToCompleteException

declareFieldIfNeeded

public String declareFieldIfNeeded(XMLElement elem)
                            throws com.google.gwt.core.ext.UnableToCompleteException

If this element has a gwt:field attribute, create a field for it of the appropriate type, and return the field name. If no gwt:field attribute is found, do nothing and return null

Returns:

The new field name, or null if no field is created

Throws:

com.google.gwt.core.ext.UnableToCompleteException

declareRenderableStamper

public String declareRenderableStamper()
                                throws com.google.gwt.core.ext.UnableToCompleteException

Declare a RenderableStamper instance that will be filled at runtime with a unique token. This instance can then be used to stamp a single IsRenderable.

Returns:

that variable's name.

Throws:

com.google.gwt.core.ext.UnableToCompleteException

declareTemplateCall

public String declareTemplateCall(String html,
                         String fieldName)
                           throws IllegalArgumentException

Writes a new SafeHtml template to the generated BinderImpl.

Returns:

The invocation of the SafeHtml template function with the arguments filled in

Throws:

IllegalArgumentException

detokenate

public String detokenate(String betokened)

Given a string containing tokens returned by tokenForStringExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String), tokenForSafeHtmlExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String) or declareDomField(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String, java.lang.String), return a string with those tokens replaced by the appropriate expressions. (It is not normally necessary for an XMLElement.Interpreter or ElementParser to make this call, as the tokens are typically replaced by the TemplateWriter itself.)

die

public void die(String message)
         throws com.google.gwt.core.ext.UnableToCompleteException

Post an error message and halt processing. This method always throws an UnableToCompleteException

Throws:

com.google.gwt.core.ext.UnableToCompleteException

die

public void die(String message,
       Object... params)
         throws com.google.gwt.core.ext.UnableToCompleteException

Post an error message and halt processing. This method always throws an UnableToCompleteException

Throws:

com.google.gwt.core.ext.UnableToCompleteException

die

public void die(XMLElement context,
       String message,
       Object... params)
         throws com.google.gwt.core.ext.UnableToCompleteException

Post an error message about a specific XMLElement and halt processing. This method always throws an UnableToCompleteException

Throws:

com.google.gwt.core.ext.UnableToCompleteException

endAttachedSection

public void endAttachedSection()

End the current attachable section. This will detach the element if it was ever attached and execute any detach statements.

See Also:

beginAttachedSection(String)

ensureAttached

public void ensureAttached()

Ensure that the specified element is attached to the DOM.

See Also:

beginAttachedSection(String)

ensureCurrentFieldAttached

public void ensureCurrentFieldAttached()

Ensure that the specified field is attached to the DOM. The field must hold an object that responds to Element getElement(). Convenience wrapper for ensureAttached()(field + ".getElement()").

See Also:

beginAttachedSection(String)

findFieldType

public com.google.gwt.core.ext.typeinfo.JClassType findFieldType(XMLElement elem)
                                                          throws com.google.gwt.core.ext.UnableToCompleteException

Finds the JClassType that corresponds to this XMLElement, which must be a Widget or an Element.

Throws:

com.google.gwt.core.ext.UnableToCompleteException - If no such widget class exists

RuntimeException - if asked to handle a non-widget, non-DOM element

genPropertySet

public void genPropertySet(String fieldName,
                  String propName,
                  String value)

Generates the code to set a property value (assumes that 'value' is a valid Java expression).

genStringPropertySet

public void genStringPropertySet(String fieldName,
                        String propName,
                        String value)

Generates the code to set a string property.

getBaseClass

public com.google.gwt.core.ext.typeinfo.JClassType getBaseClass()

The type we have been asked to generated, e.g. MyUiBinder

getBundleClass

public ImplicitClientBundle getBundleClass()

getDesignTime

public DesignTimeUtils getDesignTime()

Returns the DesignTimeUtils, not null.

getFieldManager

public FieldManager getFieldManager()

getLogger

public MortalLogger getLogger()

Returns the logger, at least until we get get it handed off to parsers via constructor args.

getMessages

public MessagesWriter getMessages()

Get the MessagesWriter for this UI, generating it if necessary.

getOracle

public com.google.gwt.core.ext.typeinfo.TypeOracle getOracle()

Gets the type oracle.

getOwnerClass

public OwnerClass getOwnerClass()

getUiFieldAttributeName

public String getUiFieldAttributeName()

isBinderElement

public boolean isBinderElement(XMLElement elem)

isElementAssignableTo

public boolean isElementAssignableTo(XMLElement elem,
                            Class<?> possibleSuperclass)
                              throws com.google.gwt.core.ext.UnableToCompleteException

Throws:

com.google.gwt.core.ext.UnableToCompleteException

isElementAssignableTo

public boolean isElementAssignableTo(XMLElement elem,
                            com.google.gwt.core.ext.typeinfo.JClassType possibleSupertype)
                              throws com.google.gwt.core.ext.UnableToCompleteException

Throws:

com.google.gwt.core.ext.UnableToCompleteException

isImportedElement

public boolean isImportedElement(XMLElement elem)

isOwnerFieldLazyDomElement

public boolean isOwnerFieldLazyDomElement(String fieldName)

Checks whether the given owner field name is a LazyDomElement or not.

isRenderableElement

public boolean isRenderableElement(XMLElement elem)
                            throws com.google.gwt.core.ext.UnableToCompleteException

Throws:

com.google.gwt.core.ext.UnableToCompleteException

isRenderer

public boolean isRenderer()

isWidgetElement

public boolean isWidgetElement(XMLElement elem)
                        throws com.google.gwt.core.ext.UnableToCompleteException

Throws:

com.google.gwt.core.ext.UnableToCompleteException

parseElementToField

public FieldWriter parseElementToField(XMLElement elem)
                                throws com.google.gwt.core.ext.UnableToCompleteException

Parses the object associated with the specified element, and returns the field writer that will hold it. The element is likely to make recursive calls back to this method to have its children parsed.

Parameters:

elem - the xml element to be parsed

Returns:

the field holder just created

Throws:

com.google.gwt.core.ext.UnableToCompleteException

setFieldInitializer

public void setFieldInitializer(String fieldName,
                       String factoryMethod)

Gives the writer the initializer to use for this field instead of the default GWT.create call.

Throws:

IllegalStateException - if an initializer has already been set

setFieldInitializerAsConstructor

public void setFieldInitializerAsConstructor(String fieldName,
                                    String... args)

Instructs the writer to initialize the field with a specific constructor invocation, instead of the default GWT.create call.

Parameters:

fieldName - the field to initialize

args - arguments to the constructor call

tokenForSafeConstant

public String tokenForSafeConstant(XMLElement source,
                          String expression)

Like tokenForStringExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String), but used for runtime expressions that we trust to be safe to interpret at runtime as HTML without escaping, like translated messages with simple formatting. Wrapped in a call to SafeHtmlUtils.fromSafeConstant(java.lang.String) to keep the expression from being escaped by the SafeHtml template.

Parameters:

expression - must resolve to trusted HTML string

tokenForSafeHtmlExpression

public String tokenForSafeHtmlExpression(XMLElement source,
                                String expression)

Like tokenForStringExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String), but used for runtime SafeHtml instances.

Parameters:

expression - must resolve to SafeHtml object

tokenForSafeUriExpression

public String tokenForSafeUriExpression(XMLElement source,
                               String expression)

Like tokenForStringExpression(com.google.gwt.uibinder.rebind.XMLElement, java.lang.String), but used for runtime SafeUri instances.

Parameters:

expression - must resolve to SafeUri object

tokenForStringExpression

public String tokenForStringExpression(XMLElement source,
                              String expression)

Returns a string token that can be used in place the given expression inside any string literals. Before the generated code is written, the expression will be stitched back into the generated code in place of the token, surrounded by plus signs. This is useful in strings to be handed to setInnerHTML() and setText() calls, to allow a unique dom id attribute or other runtime expression in the string.

Parameters:

expression - must resolve to String

useLazyWidgetBuilders

public boolean useLazyWidgetBuilders()

useSafeHtmlTemplates

public boolean useSafeHtmlTemplates()

Returns:

true of SafeHtml integration is in effect

warn

public void warn(String message)

Post a warning message.

warn

public void warn(String message,
        Object... params)

Post a warning message.

warn

public void warn(XMLElement context,
        String message,
        Object... params)

Post a warning message.