net.sf.click.extras.control
Class PageButton

java.lang.Object
  net.sf.click.control.AbstractControl
      net.sf.click.control.AbstractLink
          net.sf.click.control.PageLink
              net.sf.click.extras.control.PageButton

All Implemented Interfaces:

Serializable, Control

public class PageButton
extends PageLink

Provides a Page link Button control: <input type='button'>.

The PageButton is provides link style navigation button to a Page that is rendered in form of a button (an input HTML element with the type="button" more precisely) plus javascript getting the borwser to the location of that Page.

PageButton Advantages

• Over Button + direct javascript trick:
  • encoding of parameters works correctly due to the PageLink it extends.
• Over PageLink:
  • crawlers/spiders (or other browser plug-ins) won't follow the target since it's a button.
  • the look and feel is native - much better than half-working CSS hacks to simulate buttons with Link elements.
• Over ActionButton + forward/redirect trick:
  • there's no roundtrip to the server.
  • net.sf.click.Page#redirect(Class) does not support parameters and net.sf.click.Page#redirect(String) is prone to errors when hardcoding them in the String.

Note: this control is related to PageLink and not to PageSubmit.

Author:

Ahmed Mohombe

See Also:

Serialized Form

Field Summary

Fields inherited from class net.sf.click.control.PageLink

pageClass

Fields inherited from class net.sf.click.control.AbstractLink

disabled, imageSrc, label, parameters, tabindex, title

Fields inherited from class net.sf.click.control.AbstractControl

actionListener, attributes, listener, listenerMethod, messages, name, parent, styles

Fields inherited from interface net.sf.click.Control

CONTROL_MESSAGES

Constructor Summary

PageButton()
Create a PageButton with no name defined.

PageButton(Class targetPage)
Create a PageButton for the given target Page class.

PageButton(String name)
Create a PageButton for the given name.

PageButton(String name, Class targetPage)
Create a PageButton for the given name and target Page class.

PageButton(String name, String label, Class targetPage)
Create a PageButton for the given name, label and target Page class.

Method Summary

String	getOnClick() Return the Button's onClick() String, representing a javascript location of the Page to get.
String	getTag() Return the links html tag: input.
void	render(HtmlStringBuffer buffer) Render the HTML representation of the button.
String	toString() Return a HTML rendered Button string.

Methods inherited from class net.sf.click.control.PageLink

getHref, getPageClass, onProcess, setListener, setPageClass

Methods inherited from class net.sf.click.control.AbstractLink

getHtmlImports, getId, getImageSrc, getLabel, getParameter, getParameters, getTabIndex, getTitle, hasParameters, isDisabled, setDisabled, setImageSrc, setLabel, setParameter, setTabIndex, setTitle

Methods inherited from class net.sf.click.control.AbstractControl

addStyleClass, appendAttributes, getActionListener, getAttribute, getAttributes, getContext, getControlSizeEst, getMessage, getMessage, getMessage, getMessages, getName, getPage, getParent, getStyle, getStyles, hasAttribute, hasAttributes, hasStyles, onDeploy, onDestroy, onInit, onRender, registerActionEvent, removeStyleClass, renderTagBegin, renderTagEnd, setActionListener, setAttribute, setId, setName, setParent, setStyle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PageButton

public PageButton(String name)

Create a PageButton for the given name.

Parameters:

name - the page button name

Throws:

IllegalArgumentException - if the name is null

PageButton

public PageButton(String name,
                  Class targetPage)

Create a PageButton for the given name and target Page class.

Parameters:

name - the page button name

targetPage - the target page class

Throws:

IllegalArgumentException - if the name is null

PageButton

public PageButton(String name,
                  String label,
                  Class targetPage)

Create a PageButton for the given name, label and target Page class.

Parameters:

name - the page button name

label - the page button label

targetPage - the target page class

Throws:

IllegalArgumentException - if the name is null

PageButton

public PageButton(Class targetPage)

Create a PageButton for the given target Page class.

Parameters:

targetPage - the target page class

Throws:

IllegalArgumentException - if the name is null

PageButton

public PageButton()

Create a PageButton with no name defined.

Please note the control's name and target pageClass must be defined before it is valid.

Method Detail

getTag

public String getTag()

Return the links html tag: input.

Overrides:

getTag in class AbstractLink

Returns:

this controls html tag

See Also:

AbstractControl.getTag()

render

public void render(HtmlStringBuffer buffer)

Render the HTML representation of the button. Note the button label is rendered as the HTML "value" attribute.

Specified by:

render in interface Control

Overrides:

render in class AbstractLink

Parameters:

buffer - the specified buffer to render the control's output to

toString

public String toString()

Return a HTML rendered Button string. Note the button label is rendered as the HTML "value" attribute.

Overrides:

toString in class AbstractControl

Returns:

a HTML rendered Button string

See Also:

Object.toString()

getOnClick

public String getOnClick()

Return the Button's onClick() String, representing a javascript location of the Page to get.

Returns:

the Button's onClick() String, representing a javascript location of the Page to get.