<af:selectOneChoice>

UIComponent class: oracle.adf.view.rich.component.rich.input.RichSelectOneChoice
Component type: oracle.adf.RichSelectOneChoice

The selectOneChoice component creates a menu-style component, which allows the user to select a single value from a list of items. The selectOneChoice component contains any number of <f:selectItem>, <f:selectItems>, or <af:selectItem> components, each of which represents an available option that the user may select.

The af:selectOneChoice component is intended for a relatively small number of items in the dropdown. If a large number of items is desired, it is recommended to use af:inputComboboxListOfValues instead.

The attributes "disabled", "immediate", "readOnly", "required", "requiredMessageDetail", "value" are not settable from the client for security reasons. The "disabled" attribute can be set on the client if the "unsecure" attribute is set accordingly.

The attribute "unselectedLabel" defines a value that is rendered as the first option in the choice box. It could be something like "None". If not set, the value is null. Once an option has been successfully selected, and if unselectedLabel is not set, the empty option will not be rendered.

Geometry Management

This component cannot be stretched by a parent layout component.
This component does not stretch its children.

Screen Shot(s)

SelectOneChoice component.

Expanded selectOneChoice component.

SelectOneChoice component with mode="compact".

expanded compact selectOneChoice screenshot

Expanded selectOneChoice component with mode="compact".

Code Example(s)

<af:selectOneChoice value="#{bean.aValue}" required="true">
  <f:selectItem itemLabel="Option1" itemValue="1"/>
  <f:selectItem itemLabel="Option2" itemValue="2"/>
  <f:selectItem itemLabel="Option3" itemValue="3"/>
</af:selectOneChoice>

Events

Type	Phases	Description
javax.faces.event.ValueChangeEvent	Process Validations, Apply Request Values	The valueChange event is delivered when the value attribute is changed.
org.apache.myfaces.trinidad.event.AttributeChangeEvent	Invoke Application, Apply Request Values	Event delivered to describe an attribute change. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change event might include the width of a column that supported client-side resizing.

Type

Phases

Description

javax.faces.event.ValueChangeEvent

Process Validations,
Apply Request Values

The valueChange event is delivered when the value attribute is changed.

org.apache.myfaces.trinidad.event.AttributeChangeEvent

Invoke Application,
Apply Request Values

Event delivered to describe an attribute change. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change event might include the width of a column that supported client-side resizing.

Name	Description
context	Location for contextual information. A contextInfo component is expected. This facet is ignored when 'mode' is 'compact'.
help	This facet is deprecated, helpTopicId should be used for providing help. This is a no-op for form components.

Name

Description

context

Location for contextual information. A contextInfo component is expected. This facet is ignored when 'mode' is 'compact'.

help

This facet is deprecated, helpTopicId should be used for providing help. This is a no-op for form components.

Attributes

Name	Type	Supports EL?	Description
accessKey	char	Yes	a character used to gain quick access to the form element specified by the `for`, if set (or this component itself, if it is a "non-simple" form element). If the same access key appears in multiple locations in the same page of output, the rendering user agent will cycle among the elements accessed by the similar keys. This attribute is sometimes referred to as the "mnemonic". Note that the accessKey is triggered by browser-specific and platform-specific modifier keys. It even has browser-specific meaning. For example, Internet Explorer will set focus when you press Alt+<accessKey>. Firefox sets focus on some operating systems when you press Alt+Shift+<accessKey>. Firefox on other operating systems sets focus when you press Control+<accessKey>. Refer to your browser's documentation for how it treats access keys.
attributeChangeListener	javax.el.MethodExpression	Only EL	a method reference to an attribute change listener. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change events might include the width of a column that supported client-side resizing.
autoSubmit	boolean	Yes	Default Value: false an attribute which if set to TRUE on a form element, the component will automatically submit when an appropriate action takes place (a click, text change, etc.). Since autoSubmit is a partial submit, also submitted and re-rendered are any other components with partialTriggers pointing to this component.
binding	oracle.adf.view.rich.component.rich.input.RichSelectOneChoice	Only EL	an EL reference that will store the component instance on a bean. This can be used to give programmatic access to a component from a backing bean, or to move creation of the component to a backing bean.
changed	boolean	Yes	Default Value: false an attribute which if set to true, the changed indicator icon will be displayed on the component.
changedDesc	String	Yes	the text commonly used by user agents to display tooltip text on the changed indicator icon. Default value is "Changed". The behavior of the tooltip is controlled by the user agent, e.g. Firefox 2 truncates long tooltips.
clientComponent	boolean	Yes	Default Value: false whether a client-side component will be generated. A component may be generated whether or not this flag is set, but if client Javascript requires the component object, this must be set to true to guarantee the component's presence. Client component objects that are generated today by default may not be present in the future; setting this flag is the only way to guarantee a component's presence, and clients cannot rely on implicit behavior. However, there is a performance cost to setting this flag, so clients should avoid turning on client components unless absolutely necessary.
contentStyle	String	Yes	the style of the content piece of the component. You can style width by setting this attribute like this: width: 100px. Be aware that because of browser CSS precedence rules, CSS rendered on a DOM element takes precedence over external stylesheets like the skin file. Therefore skins will not be able to override what you set on this attribute.
converter	javax.faces.convert.Converter	Yes	a converter object
customizationId	String	Yes	This attribute is deprecated. The 'id' attribute should be used when applying persistent customizations. This attribute will be removed in the next release.
disabled	boolean	Yes	Default Value: false whether the element is disabled. Unlike a readonly component, a disabled component is unable to receive focus. If the component has the potential to have a scrollbar, and you want the user to be able to scroll through the component's text or values, use the 'readOnly' attribute, not the 'disabled' attribute.
editable	String	Yes	Valid Values: inherit, always, onAccess Default Value: inherit the editable look and feel to use for input components. 'always' indicates that the input component should always look editable. 'onAccess' indicates that the input will only look editable when accessed (hover, focus). 'inherit' indicates that we want to use the component parent's setting. None of the ancestor components define 'always' or 'onAccess', then 'always' will be used.
helpTopicId	String	Yes	the id used to look up a topic in a helpProvider.
id	String	No	the identifier for the component. Every component may be named by a component identifier that must conform to the following rules: They must start with a letter (as defined by the Character.isLetter() method) or underscore ( _ ). Subsequent characters must be letters (as defined by the Character.isLetter() method), digits as defined by the Character.isDigit() method, dashes ( - ), or underscores ( _ ). To minimize the size of responses generated by JavaServer Faces, it is recommended that component identifiers be as short as possible. If a component has been given an identifier, it must be unique in the namespace of the closest ancestor to that component that is a NamingContainer (if any).
immediate	boolean	Yes	Default Value: false whether the value is converted and validated immediately in the Apply Request Values phase, or is handled in the Process Validators phase, the default. By default, values are converted and validated together in the Process Validators phase. However, if you need access to the value of a component during Apply Request Values - for example, if you need to get the value from an actionListener on an immediate commandButton - then setting this to "immediate" makes that possible.
inlineStyle	String	Yes	the CSS styles to use for this component. This is intended for basic style changes. The inlineStyle is a set of CSS styles that are applied to the root DOM element of the component. Be aware that because of browser CSS precedence rules, CSS rendered on a DOM element takes precedence over external stylesheets like the skin file. Therefore skins will not be able to override what you set on this attribute. If the inlineStyle's CSS properties do not affect the DOM element you want affected, then you will have to create a skin and use the skinning keys which are meant to target particular DOM elements, like ::label or ::icon-style.
label	String	Yes	the label of the component. If you want the label to appear above the control, use a panelFormLayout.
labelAndAccessKey	String	Yes	an attribute that will simultaneously set both the "value" and "accessKey" attributes from a single value, using conventional ampersand ('&') notation. For example, setting this attribute to "L&abel" will set the label to "Label" and the access key to 'a'.
labelStyle	String	Yes	the CSS styles to use for the label of this component. The labelStyle is a set of CSS styles that are applied to the label DOM element of the component. This allows a label to be styled without requiring a new skin definition.
mode	String	Yes	Valid Values: default, compact Default Value: default the mode of the component. When set to "compact", the selected value box is hidden, the drop down icon changes to smaller one, and the component can never be disabled. If compact and disabled are both true, the component is hidden.
partialTriggers	String[]	Yes	the IDs of the components that should trigger a partial update. This component will listen on the trigger components. If one of the trigger components receives an event that will cause it to update in some way, this component will request to be updated too. Identifiers are relative to the source component (this component), and must account for NamingContainers. If your component is already inside of a naming container, you can use a single colon to start the search from the root of the page, or multiple colons to move up through the NamingContainers - "::" will pop out of the component's naming container (or itself if the component is a naming container) and begin the search from there, ":::" will pop out of two naming containers (including itself if the component is a naming container) and begin the search from there, etc.
readOnly	boolean	Yes	Default Value: false whether the control is displayed as an editable field or as an output-style text control. Unlike a disabled component, a readonly component is able to receive focus.
rendered	boolean	Yes	Default Value: true whether the component is rendered. When set to false, no output will be delivered for this component (the component will not in any way be rendered, and cannot be made visible on the client). If you want to change a component's rendered attribute from false to true using PPR, set the partialTrigger attribute of its parent component so the parent refreshes and in turn will render this component.
required	boolean	Yes	Default Value: false whether a non-null, non-empty value must be entered. If false, validators will not be executed when the value is null or empty.
requiredMessageDetail	String	Yes	the message to be displayed, if 'required' validation fails. Parameters: {0} the label that identifies the component
shortDesc	String	Yes	the short description of the component. The shortDesc text may be used in two different ways, depending on the component. For components with images, the shortDesc is often used to render an HTML alt attribute for the image. Please see the accessibility guidelines section for correct alt text usage of the shortDesc attribute. shortDesc is also commonly used to render an HTML title attribute, which is used by user agents to display tooltip help text. In this case the behavior for the tooltip is controlled by the user agent, e.g. Firefox 2 truncates long tooltips. For form components, the shortDesc is displayed in a note window. For components that support the helpTopicId attribute and are not using the shortDesc as image alt text, it is recommended that helpTopicId is used instead of shortDesc as it is more flexible and provides more accessible descriptive text than the use of the title attribute.
showRequired	boolean	Yes	Default Value: false whether the associated control displays a visual indication of required user input. If a "required" attribute is also present, both the "required" attribute and the "showRequired" attribute must be false for the visual indication not to be displayed. An example of when it can be desirable to use the showRequired property is if you have a field that is initially empty and is required only if some other field on the page is touched.
simple	boolean	Yes	Default Value: false a boolean value that controls whether the component provides label support; when set to "true", the component will not display the label (these may be ignored: label, labelAndAccessKey, accessKey, showRequired, help facet) and may use simpler layout primitives. One of the usecases can be when the component is used in repeatable elements like in table, for-each etc., where label is not required.
styleClass	String	Yes	a CSS style class to use for this component. The style class can be defined in your jspx page or in a skinning CSS file, for example, or you can use one of our public style classes, like 'AFInstructionText'.
unsecure	java.util.Set	Yes	A whitespace separated list of attributes whose values ordinarily can be set only on the server, but need to be settable on the client. Currently, this is supported only for the "disabled" attribute. Note that when you are able to set a property on the client, you will be allowed to by using the the .setProperty('attribute', newValue) method, but not the .setXXXAttribute(newValue) method. For example, if you have unsecure="disabled", then on the client you can use the method .setProperty('disabled', false), while the method .setDisabled(false) will not work and will provide a javascript error that setDisabled is not a function.
unselectedLabel	String	Yes	The label for the option that represents a value of null, meaning nothing is selected. If unselectedLabel is not set and if the component does not have a selected value, then an option with an empty string as the label and value is rendered as the first option in the choice box (if there isn't an empty option already defined). Once an option has been successfully selected, and if unselectedLabel is not set, then the empty option will not be rendered.
validator	javax.faces.el.MethodBinding	Only EL	a method reference to a validator method
value	Object	Yes	the value of the component. If the EL binding for the "value" points to a bean property with a getter but no setter, and this is an editable component, the component will be rendered in read-only mode.
valueChangeListener	javax.faces.el.MethodBinding	Only EL	a method reference to a value change listener
valuePassThru	boolean	Yes	Default Value: false whether or not the values are passed through to the client. When valuePassThru is false the value and the options' values are converted to indexes before being sent to the client. Therefore, when valuePassThru is false, there is no need to write your own converter when you are using custom Objects as your values and/or options. If you need to know the actual values on the client-side, then you can set valuePassThru to true. This will pass the values through to the client, using your custom converter if it is available; a custom converter is needed if you are using custom objects. For drag and drop it is recommended to set valuePassThru to true for both the drag source and drop target since values are usually required on the client for drag and drop operations. The default is false.
visible	boolean	Yes	Default Value: true the visibility of the component. If it is "false", the component will be hidden on the client. Unlike "rendered", this does not affect the lifecycle on the server - the component may have its bindings executed, etc. - and the visibility of the component can be toggled on and off on the client, or toggled with PPR. When "rendered" is false, the component will not in any way be rendered, and cannot be made visible on the client. In most cases, use the "rendered" property instead of the "visible" property. Not supported on the following renderkits: org.apache.myfaces.trinidad.core

Name

Type

Supports EL?

Description

accessKey

char

Yes

a character used to gain quick access to the form element specified by the for, if set (or this component itself, if it is a "non-simple" form element). If the same access key appears in multiple locations in the same page of output, the rendering user agent will cycle among the elements accessed by the similar keys.

This attribute is sometimes referred to as the "mnemonic".

Note that the accessKey is triggered by browser-specific and platform-specific modifier keys. It even has browser-specific meaning. For example, Internet Explorer will set focus when you press Alt+<accessKey>. Firefox sets focus on some operating systems when you press Alt+Shift+<accessKey>. Firefox on other operating systems sets focus when you press Control+<accessKey>. Refer to your browser's documentation for how it treats access keys.

attributeChangeListener

javax.el.MethodExpression

Only EL

a method reference to an attribute change listener. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change events might include the width of a column that supported client-side resizing.

autoSubmit

boolean

Yes

Default Value: false

an attribute which if set to TRUE on a form element, the component will automatically submit when an appropriate action takes place (a click, text change, etc.). Since autoSubmit is a partial submit, also submitted and re-rendered are any other components with partialTriggers pointing to this component.

binding

oracle.adf.view.rich.component.rich.input.RichSelectOneChoice

Only EL

an EL reference that will store the component instance on a bean. This can be used to give programmatic access to a component from a backing bean, or to move creation of the component to a backing bean.

changed

boolean

Yes

Default Value: false

an attribute which if set to true, the changed indicator icon will be displayed on the component.

changedDesc

String

Yes

the text commonly used by user agents to display tooltip text on the changed indicator icon. Default value is "Changed". The behavior of the tooltip is controlled by the user agent, e.g. Firefox 2 truncates long tooltips.

clientComponent

boolean

Yes

Default Value: false

whether a client-side component will be generated. A component may be generated whether or not this flag is set, but if client Javascript requires the component object, this must be set to true to guarantee the component's presence. Client component objects that are generated today by default may not be present in the future; setting this flag is the only way to guarantee a component's presence, and clients cannot rely on implicit behavior. However, there is a performance cost to setting this flag, so clients should avoid turning on client components unless absolutely necessary.

contentStyle

String

Yes

the style of the content piece of the component. You can style width by setting this attribute like this: width: 100px. Be aware that because of browser CSS precedence rules, CSS rendered on a DOM element takes precedence over external stylesheets like the skin file. Therefore skins will not be able to override what you set on this attribute.

converter

javax.faces.convert.Converter

Yes

a converter object

customizationId

String

Yes

This attribute is deprecated. The 'id' attribute should be used when applying persistent customizations. This attribute will be removed in the next release.

disabled

boolean

Yes

Default Value: false

whether the element is disabled. Unlike a readonly component, a disabled component is unable to receive focus. If the component has the potential to have a scrollbar, and you want the user to be able to scroll through the component's text or values, use the 'readOnly' attribute, not the 'disabled' attribute.

editable

String

Yes

Valid Values: inherit, always, onAccess
Default Value: inherit

the editable look and feel to use for input components. 'always' indicates that the input component should always look editable. 'onAccess' indicates that the input will only look editable when accessed (hover, focus). 'inherit' indicates that we want to use the component parent's setting. None of the ancestor components define 'always' or 'onAccess', then 'always' will be used.

helpTopicId

String

Yes

the id used to look up a topic in a helpProvider.

String

the identifier for the component. Every component may be named by a component identifier that must conform to the following rules:

They must start with a letter (as defined by the Character.isLetter() method) or underscore ( _ ).
Subsequent characters must be letters (as defined by the Character.isLetter() method), digits as defined by the Character.isDigit() method, dashes ( - ), or underscores ( _ ). To minimize the size of responses generated by JavaServer Faces, it is recommended that component identifiers be as short as possible. If a component has been given an identifier, it must be unique in the namespace of the closest ancestor to that component that is a NamingContainer (if any).

immediate

boolean

Yes

Default Value: false

whether the value is converted and validated immediately in the Apply Request Values phase, or is handled in the Process Validators phase, the default. By default, values are converted and validated together in the Process Validators phase. However, if you need access to the value of a component during Apply Request Values - for example, if you need to get the value from an actionListener on an immediate commandButton - then setting this to "immediate" makes that possible.

inlineStyle

String

Yes

the CSS styles to use for this component. This is intended for basic style changes. The inlineStyle is a set of CSS styles that are applied to the root DOM element of the component. Be aware that because of browser CSS precedence rules, CSS rendered on a DOM element takes precedence over external stylesheets like the skin file. Therefore skins will not be able to override what you set on this attribute. If the inlineStyle's CSS properties do not affect the DOM element you want affected, then you will have to create a skin and use the skinning keys which are meant to target particular DOM elements, like ::label or ::icon-style.

label

String

Yes

the label of the component. If you want the label to appear above the control, use a panelFormLayout.

labelAndAccessKey

String

Yes

an attribute that will simultaneously set both the "value" and "accessKey" attributes from a single value, using conventional ampersand ('&') notation.

For example, setting this attribute to "L&abel" will set the label to "Label" and the access key to 'a'.

labelStyle

String

Yes

the CSS styles to use for the label of this component. The labelStyle is a set of CSS styles that are applied to the label DOM element of the component. This allows a label to be styled without requiring a new skin definition.

mode

String

Yes

Valid Values: default, compact
Default Value: default

the mode of the component. When set to "compact", the selected value box is hidden, the drop down icon changes to smaller one, and the component can never be disabled. If compact and disabled are both true, the component is hidden.

partialTriggers

String[]

Yes

the IDs of the components that should trigger a partial update. This component will listen on the trigger components. If one of the trigger components receives an event that will cause it to update in some way, this component will request to be updated too. Identifiers are relative to the source component (this component), and must account for NamingContainers. If your component is already inside of a naming container, you can use a single colon to start the search from the root of the page, or multiple colons to move up through the NamingContainers - "::" will pop out of the component's naming container (or itself if the component is a naming container) and begin the search from there, ":::" will pop out of two naming containers (including itself if the component is a naming container) and begin the search from there, etc.

readOnly

boolean

Yes

Default Value: false

whether the control is displayed as an editable field or as an output-style text control. Unlike a disabled component, a readonly component is able to receive focus.

rendered

boolean

Yes

Default Value: true

whether the component is rendered. When set to false, no output will be delivered for this component (the component will not in any way be rendered, and cannot be made visible on the client). If you want to change a component's rendered attribute from false to true using PPR, set the partialTrigger attribute of its parent component so the parent refreshes and in turn will render this component.

required

boolean

Yes

Default Value: false

whether a non-null, non-empty value must be entered. If false, validators will not be executed when the value is null or empty.

requiredMessageDetail

String

Yes

the message to be displayed, if 'required' validation fails.

Parameters:

{0} the label that identifies the component

shortDesc

String

Yes

the short description of the component. The shortDesc text may be used in two different ways, depending on the component.

For components with images, the shortDesc is often used to render an HTML alt attribute for the image. Please see the accessibility guidelines section for correct alt text usage of the shortDesc attribute.

shortDesc is also commonly used to render an HTML title attribute, which is used by user agents to display tooltip help text. In this case the behavior for the tooltip is controlled by the user agent, e.g. Firefox 2 truncates long tooltips. For form components, the shortDesc is displayed in a note window. For components that support the helpTopicId attribute and are not using the shortDesc as image alt text, it is recommended that helpTopicId is used instead of shortDesc as it is more flexible and provides more accessible descriptive text than the use of the title attribute.

showRequired

boolean

Yes

Default Value: false

whether the associated control displays a visual indication of required user input. If a "required" attribute is also present, both the "required" attribute and the "showRequired" attribute must be false for the visual indication not to be displayed. An example of when it can be desirable to use the showRequired property is if you have a field that is initially empty and is required only if some other field on the page is touched.

simple

boolean

Yes

Default Value: false

a boolean value that controls whether the component provides label support; when set to "true", the component will not display the label (these may be ignored: label, labelAndAccessKey, accessKey, showRequired, help facet) and may use simpler layout primitives. One of the usecases can be when the component is used in repeatable elements like in table, for-each etc., where label is not required.

styleClass

String

Yes

a CSS style class to use for this component. The style class can be defined in your jspx page or in a skinning CSS file, for example, or you can use one of our public style classes, like 'AFInstructionText'.

unsecure

java.util.Set

Yes

A whitespace separated list of attributes whose values ordinarily can be set only on the server, but need to be settable on the client. Currently, this is supported only for the "disabled" attribute. Note that when you are able to set a property on the client, you will be allowed to by using the the .setProperty('attribute', newValue) method, but not the .setXXXAttribute(newValue) method. For example, if you have unsecure="disabled", then on the client you can use the method .setProperty('disabled', false), while the method .setDisabled(false) will not work and will provide a javascript error that setDisabled is not a function.

unselectedLabel

String

Yes

The label for the option that represents a value of null, meaning nothing is selected. If unselectedLabel is not set and if the component does not have a selected value, then an option with an empty string as the label and value is rendered as the first option in the choice box (if there isn't an empty option already defined). Once an option has been successfully selected, and if unselectedLabel is not set, then the empty option will not be rendered.

validator

javax.faces.el.MethodBinding

Only EL

a method reference to a validator method

value

Object

Yes

the value of the component. If the EL binding for the "value" points to a bean property with a getter but no setter, and this is an editable component, the component will be rendered in read-only mode.

valueChangeListener

javax.faces.el.MethodBinding

Only EL

a method reference to a value change listener

valuePassThru

boolean

Yes

Default Value: false

whether or not the values are passed through to the client. When valuePassThru is false the value and the options' values are converted to indexes before being sent to the client. Therefore, when valuePassThru is false, there is no need to write your own converter when you are using custom Objects as your values and/or options.

If you need to know the actual values on the client-side, then you can set valuePassThru to true. This will pass the values through to the client, using your custom converter if it is available; a custom converter is needed if you are using custom objects. For drag and drop it is recommended to set valuePassThru to true for both the drag source and drop target since values are usually required on the client for drag and drop operations.

The default is false.

visible

boolean

Yes

Default Value: true

the visibility of the component. If it is "false", the component will be hidden on the client. Unlike "rendered", this does not affect the lifecycle on the server - the component may have its bindings executed, etc. - and the visibility of the component can be toggled on and off on the client, or toggled with PPR. When "rendered" is false, the component will not in any way be rendered, and cannot be made visible on the client. In most cases, use the "rendered" property instead of the "visible" property.
Not supported on the following renderkits: org.apache.myfaces.trinidad.core

<af:selectOneChoice>

Geometry Management

Screen Shot(s)

Code Example(s)

Events

Supported Facets

Attributes