Dojo: The Definitive Guide

Chapter 15. Application Widgets

This chapter systematically works through all of the general-purpose application widgets provided in Dijit. In many ways, these are some of the most exciting dijits provided by the toolkit because they're not as familiar as form elements and, unlike the enabling layout dijits, they provide tremendous interactive functionality. ProgressBar, Toolbar, Editor, and Tree are just a few of the exciting dijits that are coming up. Chances are, you'll witness some of some highest quality DHTML hacking you've ever seen in this chapter—especially as we near the end of it.

Tip

Although not explicitly called out in all cases, the widgets in this chapter are fully accessible, as are all other widgets in Dijit.

Tooltip

Tooltips are a great means of providing user assistance for the context of a particular control on the page, and although the ordinary HTML title attribute is a good start for applications circa 1990, the current era of web applications calls for a richer variation of a tooltip. The Tooltip dijit does just that, providing the ability to display arbitrary HTML markup instead of a plain old snippet of text. Although you got a preview of Tooltip with ValidationTextBox and its descendants in a previous chapter, you'll be pleased to know that you can now use Tooltip as a standalone.

Consider Example 15-1, which captures some of the key features of a Tooltip, producing the results shown in Figure 15-1.

Example 15-1. Typical Tooltip usage

One <span id="one">fish</span>, ...