By Grant Slender
Developing in Ext GWT is a fast–paced, functional advisor to quick studying the projects useful in construction enterprise–class wealthy web purposes. dependent round the fascinating new UI library from Ajax leaders Ext JS and the most recent GWT unlock, this e-book takes the reader via setup, the to be had widgets, and complicated customized widgets and templates, and concludes with a useful pattern client–server software in under a hundred and fifty pages. now not your average beginner's consultant to programming, this publication presents a quick method of turning into potent with best advertisement RIA instruments and libraries.
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Additional resources for Developing with Ext GWT: Enterprise RIA Development
Note I will be covering ComboBox when we get to the section on forms, so don’t be too concerned about how SimpleComboBox works. menu package provide support for traditional menu bars and menu items, and allow you to build comprehensive menus and submenus like the example in Figure 3-11. Figure 3-11. Menu example Developing with Ext GWT 43 The Menu and MenuItem classes provide the majority of the functionality. A few additional classes add specific features like a separator line, support for check boxes against menu items, and a date menu item for selecting dates.
Additionally, HtmlContainer supports loading HTML fragments from a URL or a GWT RequestBuilder, as well as a supplied String. HtmlContainer also allows you to add other widgets into the container by using a selector. Selectors are used to select elements in the HTML. The selected elements are then used as targets for inserting the widget. html used in Listing 3-11. You’ll notice it contains a td element with an ID of widget1.
In Listing 3-11, a button is added to the container using that ID to target the insertion.
For example, using this layout, you can specifiy that the widget is located in a specific location with a specific size. BorderLayout This is a multipane, application-oriented UI layout style that supports multiple regions, automatic split bars between regions, and built-in expanding and collapsing of regions. For example, using this layout, you can specifiy that widgets are located in the north, south, and center locations with a collapsible/resizable eastern section. CardLayout This layout contains multiple widgets, each fit to the container, where only a single widget can be visible at any given time.