A lazy load wrapper for Vaadin GUI components

Lazy Load Wrapper is a wrapper component for Vaadin GUI components that can reduce the time that it takes for a web application to load. The wrapper creates a lightweight placeholder on the client side that is replaced with the actual component when it becomes visible on the client side.

The API of the wrapper is designed so that it will require minimalistic extra coding when used. This is why almost all features of the wrapper can be accessed through the constructors. The default settings and automatic sizing feature of the placeholder will also cut down on the number of parameters that are required to set.

Vaadin 6 Version:

  • server-side lazy load
  • server-side lazy component provider
  • client-side lazy load (lazy draw)

Vaadin 7 alpha:

  • server-side lazy load
  • server-side lazy component provider
  • server-side reinit of LLW

Install

Link to this version
ExperimentalReleased 03 February 2013Apache License 2.0
Framework Support
Vaadin 7.0+
Also supported:
Vaadin 6 (1.0.2)
Browser Compatibility
Install with
Release notes - Version 0.1 alpha

First alpha version of LLW for Vaadin7.

  • Focus on server-side lazy loading
  • lazy draw (client-side lazy loading) is experimental and could be removed in future versions for V7
  • Experimental new feature: server-side hide/show wrapper (force reinitialisation of LLW from server)

Known issues:

  • Using wrapper inside a Table might in some cases cause the wrapper not to display its child even if the wrapper is visible.
  • client-side lazy loading is buggy especially when used for loading complex components like Table (will throw client-side exceptions)