Module org.omnifaces
Package org.omnifaces.el.functions

Class Components

java.lang.Object
org.omnifaces.el.functions.Components
public final class Components extends Object
Collection of EL functions for working with components.
Since:
2.0
Author:
Arjan Tijms

  • Method Details

    • evalAttribute

      public static Object evalAttribute(UIComponent component, String name)
      Evaluates an attribute of a component by first checking if there's a value expression associated with it, and only if there isn't one look at a component property with that name.

      The regular attribute collection (UIComponent.getAttributes()) does exactly the reverse; it looks at a component property first, then at the attribute collection and only looks at a value binding as the last option.

      Parameters:
      component - The component for which the attribute is to be evaluated
      name - Name of attribute that is to be evaluated
      Returns:
      The value of the attribute, or null if either the component is null or if there's isn't an attribute by that name

    • graphicImageURL

      public static String graphicImageURL(String expression)

      Returns @GraphicImageBean URL based on given expression string.

      Usage example: 

       <a href="#{o:graphicImageURL('images.full(product.imageId)')}">
     <o:graphicImage value="#{images.thumb(product.imageId)}" />
 </a>
      Parameters:
      expression - Expression string representing the same value as you would use in <o:graphicImage>. It must be a quoted string. Any nested quotes can be escaped with backslash.
      Returns:
      @GraphicImageBean URL based on given expression string.
      Since:
      2.5
      See Also:

    • graphicImageURLWithType

      public static String graphicImageURLWithType(String expression, String type)

      Returns @GraphicImageBean URL based on given expression string and image type.

      Usage example: 

       <a href="#{o:graphicImageURLWithType('images.full(product.imageId)', 'png')}">
     <o:graphicImage value="#{images.thumb(product.imageId)}" type="png" />
 </a>
      Parameters:
      expression - Expression string representing the same value as you would use in <o:graphicImage>. It must be a quoted string. Any nested quotes can be escaped with backslash.
      type - The image type, represented as file extension. E.g. "webp", "jpg", "png", "gif", "ico", "svg", "bmp", "tiff", etc. This may be null.
      Returns:
      @GraphicImageBean URL based on given expression string and image type.
      Since:
      2.5
      See Also:

    • graphicImageURLWithTypeAndLastModified

      public static String graphicImageURLWithTypeAndLastModified(String expression, String type, Object lastModified)

      Returns @GraphicImageBean URL based on given expression string, image type and last modified.

      Usage example: 

       <a href="#{o:graphicImageURLWithTypeAndLastModified('images.full(product.imageId)', 'png', product.lastModified)}">
     <o:graphicImage value="#{images.thumb(product.imageId)}" type="png" lastModified="#{product.lastModified}" />
 </a>
      Parameters:
      expression - Expression string representing the same value as you would use in <o:graphicImage>. It must be a quoted string. Any nested quotes can be escaped with backslash.
      type - The image type, represented as file extension. E.g. "webp", "jpg", "png", "gif", "ico", "svg", "bmp", "tiff", etc. This may be null.
      lastModified - The "last modified" timestamp, can be either a Long, Date, or String which is parseable as Long. This may be null.
      Returns:
      @GraphicImageBean URL based on given expression string, image type and last modified.
      Since:
      2.5
      See Also: