Package net.sf.click.control

Provides renderable HTML controls.

See:
Description

Interface Summary

Decorator

Provides a decorator interface for delegating object rendering.

Class Summary

AbstractControl	Provides a default implementation of the Control interface, to make it easier for developers to implement their own controls.
AbstractLink	Provides a Abstract Link control: <a href=""></a>.
ActionButton	Provides a ActionButton control: <input type="button"/>.
ActionLink	Provides a Action Link control: <a href=""></a>.
Button	Provides a Button control: <input type='button'/>.
Checkbox	Provides a Checkbox control: <input type='checkbox'>.
Column	Provides the Column table data <td> and table header <th> renderer.
Column.Comparator	Provides a table Column comparator for sorting table rows.
Field	Provides an abstract form Field control.
FieldSet	Provides a FieldSet container control: <fieldset>.
FileField	Provides a File Field control: <input type='file'>.
Form	Provides a Form control: <form method='post'>.
HiddenField	Provides a Hidden Field control: <input type='hidden'>.
ImageSubmit	Provides an ImageSubmit control: <input type='image' src='edit.gif'>.
Label	Provides a Label display control.
Option	Provides a select Option element: <option></option>.
OptionGroup	Provides a select Option Group element: <optgroup></optgroup>.
PageLink	Provides a Page Link control: <a href="" ></a>.
Panel	Provides a Panel control for creating customized layout sections within a page.
PasswordField	Provides a Password Field control: <input type='password'>.
Radio	Provides a Radio control: <input type='radio'>.
RadioGroup	Provides a RadioGroup control.
Reset	Provides a Reset control: <input type='reset'>.
Select	Provides a Select control: <select></select>.
Submit	Provides a Submit control: <input type='submit'>.
Table	Provides a HTML Table control: <table>.
TextArea	Provides a TextArea control: <textarea></textarea>.
TextField	Provides a Text Field control: <input type='text'>.

Package net.sf.click.control Description

Provides renderable HTML controls. Controls implement the Control interface to perform server side request processing. At the top level a Pages controls are processed by the ClickServlet. Some controls can contain child controls which they will inturn process. These container controls include Form, FieldSet, Panel and Table.

Using these controls is similar to traditional Swing GUI programming. While these controls do not provide a full Swing style MVC implementation, they provided a simplified programming model and high performance.

Click Controls provide an event callback mechanism similar the java.awt.ActionListener callback.

public class MyPage extends Page {

    public ActionLink actionLink = new ActionLink();

    public MyPage() {
        actionLink.setListener(this, "onLinkClick");
    }
    
    public boolean onLinkClick() {
        System.out.println("onLinkClick invoked");
        return true;
    }
} 

All call back listener methods must return a boolean value. If they return true the the further processing of other controls and page methods should continue. Otherwise if they return false, then any further processing should be aborted. By returning false you can effectively exit at this point and redirect or forward to another page.