Package com.vaadin.flow.server

Class PwaIcon

java.lang.Object
com.vaadin.flow.server.PwaIcon
All Implemented Interfaces:
Serializable
public class PwaIcon extends Object implements Serializable
Implementation of icons used in PWA resources. Creates the href automatically based on - baseName (the file name with path, as icons/icon.png") - width (width of icon) - height (height of icon) - (possibly) fileHash (the hashcode of image file) The href will be set as: [basename]-[width]x[height].png{?[filehash]} The trailing ?[filehash] will be added if icon cache is not controlled by service worker: cached = false Icon caching is left to the browser if it's not cached with service worker.
Since:
1.2
See Also:

  • Method Details

    • asElement

      public org.jsoup.nodes.Element asElement()
      Gets an Element presentation of the icon.
      Returns:
      an Element presentation of the icon

    • getWidth

      public int getWidth()
      Gets width of an icon.
      Returns:
      width of an icon

    • getHeight

      public int getHeight()
      Gets height of an icon.
      Returns:
      height of an icon

    • shouldBeCached

      public boolean shouldBeCached()
      Should the icon be cached by the Service Worker.
      Returns:
      should the icon be cached by the Service Worker.

    • getSizes

      public String getSizes()
      Gets the value of the sizes attribute.
      Returns:
      value of the sizes attribute

    • getHref

      public String getHref()
      Gets the value of the href attribute.
      Returns:
      value of the href attribute

    • getRelHref

      public String getRelHref()
      Return href with '/' -prefix and removed possible ?[fileHash]. Used in matching, when serving images.
      Returns:
      href with '/' -prefix and removed possible ?[fileHash]

    • getCacheFormat

      public String getCacheFormat()
      Gets the cache-string used in Google Workbox caching.
      Returns:
      "{ url: '[href]', revision: '[fileHash' }"

    • getType

      public String getType()
      Gets the value of the type attribute.
      Returns:
      value of the type attribute

    • getDomain

      public PwaIcon.Domain getDomain()
      Gets the icon PwaIcon.Domain.
      Returns:
      the domain of the icon

    • setImage

      public void setImage(BufferedImage image)
      Sets the image presenting the icon.
      Parameters:
      image - the image in png format

    • write

      public void write(OutputStream outputStream)
      Writes the icon image to output stream.
      Parameters:
      outputStream - output stream to write the icon image to