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package javafx.scene;


This enum describes the actions that an assistive technology such as a screen reader can request from the scene graph. The AccessibleRole dictates the set of actions that the screen reader will request for a particular control. For example, a push button normally fires an event to indicate that it was pressed in response to the FIRE action. 

An action may have any number of parameters, depending on the particular action.



See Also:
Since:JavaFX 8u40
/**
 * This enum describes the actions that an assistive technology
 * such as a screen reader can request from the scene graph.
 *
 * The {@link AccessibleRole} dictates the set of actions that
 * the screen reader will request for a particular control. For
 * example, a push button normally fires an event to indicate
 * that it was pressed in response to the FIRE action.
 * <p>
 * An action may have any number of parameters, depending on the particular action.
 * </p>
 *
 * @see Node#executeAccessibleAction(AccessibleAction, Object...)
 * @see AccessibleRole
 * @see AccessibleAttribute#ROLE
 *
 * @since JavaFX 8u40
 */
public enum AccessibleAction {

    
Request that the node be decremented by a large value. A smaller decrement is requested using DECREMENT. 
Used by Slider, ScrollBar, and others 


/**
     * Request that the node be decremented by a large value.
     * A smaller decrement is requested using {@link #DECREMENT}.
     * <p>Used by Slider, ScrollBar, and others </p>
     */
    BLOCK_DECREMENT,

    
Request that the node be incremented by a large value. A smaller increment is requested using INCREMENT. 
Used by Slider, ScrollBar, and others 


/**
     * Request that the node be incremented by a large value.
     * A smaller increment is requested using {@link #INCREMENT}.
     * <p>Used by Slider, ScrollBar, and others </p>
     */
    BLOCK_INCREMENT,

    
Request that the node should become collapsed.

Used by TreeItem, TitledPane, and others 


/**
     * Request that the node should become collapsed.
     * <p>Used by TreeItem, TitledPane, and others </p>
     */
    COLLAPSE,

    
Request that the node be decremented by a small value. A larger decrement is requested using BLOCK_DECREMENT. 
Used by Slider, ScrollBar, and others 


/**
     * Request that the node be decremented by a small value.
     * A larger decrement is requested using {@link #BLOCK_DECREMENT}.
     * <p>Used by Slider, ScrollBar, and others </p>
     */
    DECREMENT,

    
Request that the node should become expanded.

Used by TreeItem, TitledPane, and others 


/**
     * Request that the node should become expanded.
     * <p>Used by TreeItem, TitledPane, and others </p>
     */
    EXPAND,

    
Fires the primary action for the node. For example, a push
button will normally send an action event to notify listeners
that is has been activated.

Used by Button, Hyperlink, and others 


/**
     * Fires the primary action for the node. For example, a push
     * button will normally send an action event to notify listeners
     * that is has been activated.
     * <p>Used by Button, Hyperlink, and others </p>
     */
    FIRE,

    
Request that the node be incremented by a small value. A larger increment is requested using BLOCK_INCREMENT. 
Used by Slider, ScrollBar, and others 


/**
     * Request that the node be incremented by a small value.
     * A larger increment is requested using {@link #BLOCK_INCREMENT}.
     * <p>Used by Slider, ScrollBar, and others </p>
     */
    INCREMENT,

    
Request that the node take focus. By default, a node will request focus using Node.requestFocus(). Both JavaFX and the assisteve technology have the concept of a focus node and most of the time, they are the same. In some cases, a control might want the JavaFX focus to remain on the parent, while the assistive technology focus is on the child. For example, a table may respond to this request by setting focus to a cell inside the table before allowing the default to run. 
Used by Node, TabItem, TableCell and others 


/**
     * Request that the node take focus.  By default, a node will
     * request focus using  {@link javafx.scene.Node#requestFocus()}.
     * Both JavaFX and the assisteve technology have the concept of
     * a focus node and most of the time, they are the same.
     * In some cases, a control might want the JavaFX focus to remain
     * on the parent, while the assistive technology focus is on the child.
     * For example, a table may respond to this request by setting focus
     * to a cell inside the table before allowing the default to run.
     * <p>Used by Node, TabItem, TableCell and others </p>
     */
    REQUEST_FOCUS,

    
Request the node to show an item, scrolling if required.

Used by ListView, TreeView, and others 

Parameters:

    

  •  Node the item to show 
    • 



/**
     * Request the node to show an item, scrolling if required.
     * <p>Used by ListView, TreeView, and others </p>
     *
     * Parameters:
     * <ul>
     * <li> {@link Node} the item to show </li>
     * </ul>
     */
    SHOW_ITEM,

    
Request the node to show a text range, scrolling if required.

Used by TextField and TextArea. 

Parameters:


/**
     * Request the node to show a text range, scrolling if required.
     * <p>Used by TextField and TextArea. </p>
     *
     * Parameters:
     * <ul>
     * <li> {@link java.lang.Integer} the start offset </li>
     * <li> {@link java.lang.Integer} the end offset </li>
     * </ul>
     */
    SHOW_TEXT_RANGE,

    
Request the node to set the selection to a list of items.

Used by ListView, TreeView, and others 

Parameters:


/**
     * Request the node to set the selection to a list of items.
     * <p>Used by ListView, TreeView, and others </p>
     *
     * Parameters:
     * <ul>
     * <li> {@link javafx.collections.ObservableList}&lt;{@link Node}&gt; the items to select </li>
     * </ul>
     */
    SET_SELECTED_ITEMS,

    
Request the node to set the selection to range of text.

Used by TextField and TextArea. 

Parameters:


/**
     * Request the node to set the selection to range of text.
     * <p>Used by TextField and TextArea. </p>
     *
     * Parameters:
     * <ul>
     * <li> {@link java.lang.Integer} the start offset </li>
     * <li> {@link java.lang.Integer} the end offset </li>
     * </ul>
     */
    SET_TEXT_SELECTION,

    
Request the node to set the current text.

Used by TextField and TextArea. 

Parameters:


/**
     * Request the node to set the current text.
     * <p>Used by TextField and TextArea. </p>
     *
     * Parameters:
     * <ul>
     * <li> {@link String} the new text</li>
     * </ul>
     */
    SET_TEXT,

    
Request the node to set the current value.

Used by Slider, Scrollbars, and others 

Parameters:


/**
     * Request the node to set the current value.
     * <p>Used by Slider, Scrollbars, and others </p>
     *
     * Parameters:
     * <ul>
     * <li> {@link java.lang.Double} the new value </li>
     * </ul>
     */
    SET_VALUE,

    
Request the node to show a menu.  If the node is a control,
then the context menu for the control is shown.  If the node
is a menu, then the submenu for the menu is shown.

Used by Node, Menu


/**
     * Request the node to show a menu.  If the node is a control,
     * then the context menu for the control is shown.  If the node
     * is a menu, then the submenu for the menu is shown.
     * <p>Used by Node, Menu</p>
     */
    SHOW_MENU,
}