The <a4j:commandButton> component is similar to the JavaServer Faces (JSF) <h:commandButton> component, but
additionally includes Ajax support.
@author Nick Belaevski
| Attributes |
| Name |
Required |
Type |
Description |
| action |
false |
javax.faces.el.MethodBinding |
MethodExpression representing the application action to invoke when this component is activated by the user. The expression
must evaluate to a public method that takes no parameters, and returns an Object (the toString() of which is called to derive
the logical outcome) which is passed to the NavigationHandler for this application.
|
| actionListener |
false |
javax.faces.el.MethodBinding |
MethodExpression representing an action listener method that will be notified when this component is activated by the
user. The expression must evaluate to a public method that takes an ActionEvent parameter, with a return type of void, or to a public method that takes no arguments with a return type of void. In the latter case, the
method has no way of easily knowing where the event came from, but this can be useful in cases where a notification is needed
that "some action happened".
|
| binding |
false |
javax.faces.component.UIComponent |
The value binding expression used to wire up this component to a component property of a JavaBean class |
| bypassUpdates |
false |
boolean |
If "true", after process validations phase it skips updates of model beans on a force render response. It can be used for
validating components input
|
| data |
false |
java.lang.Object |
Serialized (on default with JSON) data passed to the client by a developer on an AJAX request. It's accessible via "event.data"
syntax. Both primitive types and complex types such as arrays and collections can be serialized and used with data
|
| disabled |
false |
boolean |
Flag indicating that this element must never receive focus or be included in a subsequent submit. |
| execute |
false |
java.lang.Object |
Ids of components that will participate in the "execute" portion of the Request Processing Lifecycle. Can be a single id,
a space or comma separated list of Id's, or an EL Expression evaluating to an array or Collection. Any of the keywords "@this",
"@form", "@all", "@none", "@region" may be specified in the identifier list. Some components make use of additional keywords
|
| id |
false |
java.lang.String |
The component identifier for this component. This value must be unique within the closest parent component that is a naming
container.
|
| image |
false |
java.lang.String |
Absolute or relative URL of the image to be displayed for this button. If specified, this "input" element will be of type
"image". Otherwise, it will be of the type specified by the "type" property with a label specified by the "value" property
|
| immediate |
false |
boolean |
Flag indicating that, if this component is activated by the user, notifications should be delivered to interested listeners
and actions immediately (that is, during Apply Request Values phase) rather than waiting until Invoke Application phase.
|
| limitRender |
false |
boolean |
If "true", render only those ids specified in the "render" attribute, forgoing the render of the auto-rendered panels |
| onbeforedomupdate |
false |
java.lang.String |
The client-side script method to be called after the ajax response comes back, but before the DOM is updated |
| onbegin |
false |
java.lang.String |
The client-side script method to be called before an ajax request. |
| onclick |
false |
java.lang.String |
Javascript code executed when a pointer button is clicked over this element. |
| oncomplete |
false |
java.lang.String |
The client-side script method to be called after the DOM is updated |
| ondblclick |
false |
java.lang.String |
Javascript code executed when a pointer button is double clicked over this element. |
| onkeydown |
false |
java.lang.String |
Javascript code executed when a key is pressed down over this element. |
| onkeypress |
false |
java.lang.String |
Javascript code executed when a key is pressed and released over this element. |
| onkeyup |
false |
java.lang.String |
Javascript code executed when a key is released over this element. |
| onmousedown |
false |
java.lang.String |
Javascript code executed when a pointer button is pressed down over this element. |
| onmousemove |
false |
java.lang.String |
Javascript code executed when a pointer button is moved within this element. |
| onmouseout |
false |
java.lang.String |
Javascript code executed when a pointer button is moved away from this element. |
| onmouseover |
false |
java.lang.String |
Javascript code executed when a pointer button is moved onto this element. |
| onmouseup |
false |
java.lang.String |
Javascript code executed when a pointer button is released over this element. |
| render |
false |
java.lang.Object |
Ids of components that will participate in the "render" portion of the Request Processing Lifecycle. Can be a single id, a
space or comma separated list of Id's, or an EL Expression evaluating to an array or Collection. Any of the keywords "@this",
"@form", "@all", "@none", "@region" may be specified in the identifier list. Some components make use of additional keywords
|
| rendered |
false |
boolean |
Flag indicating whether or not this component should be rendered (during Render Response Phase), or processed on any subsequent
form submit. The default value for this property is true.
|
| status |
false |
java.lang.String |
Name of the request status component that will indicate the status of the Ajax request |
| style |
false |
java.lang.String |
CSS style(s) to be applied when this component is rendered. |
| styleClass |
false |
java.lang.String |
Space-separated list of CSS style class(es) to be applied when this element is rendered. This value must be passed through
as the "class" attribute on generated markup.
|
| title |
false |
java.lang.String |
Advisory title information about markup elements generated for this component. |
| type |
false |
java.lang.String |
Type of button to create. Can be one of "submit", "button", "image" and "reset". If not specified, the default value is "submit". |
| value |
false |
java.lang.Object |
The current value of this component. |