com.vaadin.flow.component.littemplate.internal

Class LitTemplateParserImpl

java.lang.Object

com.vaadin.flow.component.littemplate.internal.LitTemplateParserImpl

All Implemented Interfaces:

LitTemplateParser

public class LitTemplateParserImpl
extends Object
implements LitTemplateParser

Lit template parser implementation.

The implementation scans all JsModule annotations for the given template class and tries to find the one that contains template definition using the tag name.

The class is Singleton. Use getInstance() to get its instance.

For internal use only. May be renamed or removed in a future release.

Since:

Author:

Vaadin Ltd

See Also:

BundleLitParser

Nested Class Summary

Nested classes/interfaces inherited from interface com.vaadin.flow.component.littemplate.LitTemplateParser

LitTemplateParser.LitTemplateParserFactory, LitTemplateParser.TemplateData

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LitTemplateParserImpl() The default constructor.

Method Summary

Modifier and Type	Method and Description
static LitTemplateParser	getInstance()
protected String	getSourcesFromTemplate(String tag, String url) Finds the JavaScript sources for given tag.
LitTemplateParser.TemplateData	getTemplateContent(Class<? extends LitTemplate> clazz, String tag, VaadinService service) Gets the template data which contains a JSOUP Element representing the template content and the template uri.

Methods inherited from class java.lang.Object

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

Constructor Detail

LitTemplateParserImpl

protected LitTemplateParserImpl()

The default constructor. Protected in order to prevent direct instantiation, but not private in order to allow mocking/overrides for testing purposes.

Method Detail

getInstance

public static LitTemplateParser getInstance()

getTemplateContent

public LitTemplateParser.TemplateData getTemplateContent(Class<? extends LitTemplate> clazz,
                                                         String tag,
                                                         VaadinService service)

Description copied from interface: LitTemplateParser

Gets the template data which contains a JSOUP Element representing the template content and the template uri.

Specified by:

getTemplateContent in interface LitTemplateParser

Parameters:

clazz - the template class

tag - the template tag name

service - the related Vaadin service

Returns:

the template data, may be null

getSourcesFromTemplate

protected String getSourcesFromTemplate(String tag,
                                        String url)

Finds the JavaScript sources for given tag.

Parameters:

tag - the value of the Tag annotation, e.g. `my-component`

url - the URL resolved according to the JsModule spec, for example ./view/my-view.js or @vaadin/vaadin-button.js.

Returns:

the .js source which declares given custom element, or null if no such source can be found.