| /* |
| * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.accessibility; |
| |
| import java.util.Locale; |
| import java.beans.PropertyChangeListener; |
| import java.beans.PropertyChangeSupport; |
| import java.beans.PropertyChangeEvent; |
| import java.awt.IllegalComponentStateException; |
| |
| /** |
| * AccessibleContext represents the minimum information all accessible objects |
| * return. This information includes the accessible name, description, role, |
| * and state of the object, as well as information about its parent and |
| * children. AccessibleContext also contains methods for |
| * obtaining more specific accessibility information about a component. |
| * If the component supports them, these methods will return an object that |
| * implements one or more of the following interfaces: |
| * <P><ul> |
| * <li>{@link AccessibleAction} - the object can perform one or more actions. |
| * This interface provides the standard mechanism for an assistive |
| * technology to determine what those actions are and tell the object |
| * to perform them. Any object that can be manipulated should |
| * support this interface. |
| * <li>{@link AccessibleComponent} - the object has a graphical representation. |
| * This interface provides the standard mechanism for an assistive |
| * technology to determine and set the graphical representation of the |
| * object. Any object that is rendered on the screen should support |
| * this interface. |
| * <li>{@link AccessibleSelection} - the object allows its children to be |
| * selected. This interface provides the standard mechanism for an |
| * assistive technology to determine the currently selected children of the object |
| * as well as modify its selection set. Any object that has children |
| * that can be selected should support this interface. |
| * <li>{@link AccessibleText} - the object presents editable textual information |
| * on the display. This interface provides the standard mechanism for |
| * an assistive technology to access that text via its content, attributes, |
| * and spatial location. Any object that contains editable text should |
| * support this interface. |
| * <li>{@link AccessibleValue} - the object supports a numerical value. This |
| * interface provides the standard mechanism for an assistive technology |
| * to determine and set the current value of the object, as well as obtain its |
| * minimum and maximum values. Any object that supports a numerical value |
| * should support this interface.</ul> |
| * |
| * |
| * @beaninfo |
| * attribute: isContainer false |
| * description: Minimal information that all accessible objects return |
| * |
| |
| * @author Peter Korn |
| * @author Hans Muller |
| * @author Willie Walker |
| * @author Lynn Monsanto |
| */ |
| public abstract class AccessibleContext { |
| |
| /** |
| * Constant used to determine when the accessibleName property has |
| * changed. The old value in the PropertyChangeEvent will be the old |
| * accessibleName and the new value will be the new accessibleName. |
| * |
| * @see #getAccessibleName |
| * @see #addPropertyChangeListener |
| */ |
| public static final String ACCESSIBLE_NAME_PROPERTY = "AccessibleName"; |
| |
| /** |
| * Constant used to determine when the accessibleDescription property has |
| * changed. The old value in the PropertyChangeEvent will be the |
| * old accessibleDescription and the new value will be the new |
| * accessibleDescription. |
| * |
| * @see #getAccessibleDescription |
| * @see #addPropertyChangeListener |
| */ |
| public static final String ACCESSIBLE_DESCRIPTION_PROPERTY = "AccessibleDescription"; |
| |
| /** |
| * Constant used to determine when the accessibleStateSet property has |
| * changed. The old value will be the old AccessibleState and the new |
| * value will be the new AccessibleState in the accessibleStateSet. |
| * For example, if a component that supports the vertical and horizontal |
| * states changes its orientation from vertical to horizontal, the old |
| * value will be AccessibleState.VERTICAL and the new value will be |
| * AccessibleState.HORIZONTAL. Please note that either value can also |
| * be null. For example, when a component changes from being enabled |
| * to disabled, the old value will be AccessibleState.ENABLED |
| * and the new value will be null. |
| * |
| * @see #getAccessibleStateSet |
| * @see AccessibleState |
| * @see AccessibleStateSet |
| * @see #addPropertyChangeListener |
| */ |
| public static final String ACCESSIBLE_STATE_PROPERTY = "AccessibleState"; |
| |
| /** |
| * Constant used to determine when the accessibleValue property has |
| * changed. The old value in the PropertyChangeEvent will be a Number |
| * representing the old value and the new value will be a Number |
| * representing the new value |
| * |
| * @see #getAccessibleValue |
| * @see #addPropertyChangeListener |
| */ |
| public static final String ACCESSIBLE_VALUE_PROPERTY = "AccessibleValue"; |
| |
| /** |
| * Constant used to determine when the accessibleSelection has changed. |
| * The old and new values in the PropertyChangeEvent are currently |
| * reserved for future use. |
| * |
| * @see #getAccessibleSelection |
| * @see #addPropertyChangeListener |
| */ |
| public static final String ACCESSIBLE_SELECTION_PROPERTY = "AccessibleSelection"; |
| |
| /** |
| * Constant used to determine when the accessibleText caret has changed. |
| * The old value in the PropertyChangeEvent will be an |
| * integer representing the old caret position, and the new value will |
| * be an integer representing the new/current caret position. |
| * |
| * @see #addPropertyChangeListener |
| */ |
| public static final String ACCESSIBLE_CARET_PROPERTY = "AccessibleCaret"; |
| |
| /** |
| * Constant used to determine when the visual appearance of the object |
| * has changed. The old and new values in the PropertyChangeEvent are |
| * currently reserved for future use. |
| * |
| * @see #addPropertyChangeListener |
| */ |
| public static final String ACCESSIBLE_VISIBLE_DATA_PROPERTY = "AccessibleVisibleData"; |
| |
| /** |
| * Constant used to determine when Accessible children are added/removed |
| * from the object. If an Accessible child is being added, the old |
| * value will be null and the new value will be the Accessible child. If an |
| * Accessible child is being removed, the old value will be the Accessible |
| * child, and the new value will be null. |
| * |
| * @see #addPropertyChangeListener |
| */ |
| public static final String ACCESSIBLE_CHILD_PROPERTY = "AccessibleChild"; |
| |
| /** |
| * Constant used to determine when the active descendant of a component |
| * has changed. The active descendant is used for objects such as |
| * list, tree, and table, which may have transient children. When the |
| * active descendant has changed, the old value of the property change |
| * event will be the Accessible representing the previous active child, and |
| * the new value will be the Accessible representing the current active |
| * child. |
| * |
| * @see #addPropertyChangeListener |
| */ |
| public static final String ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY = "AccessibleActiveDescendant"; |
| |
| /** |
| * Constant used to indicate that the table caption has changed |
| * The old value in the PropertyChangeEvent will be an Accessible |
| * representing the previous table caption and the new value will |
| * be an Accessible representing the new table caption. |
| * @see Accessible |
| * @see AccessibleTable |
| */ |
| public static final String ACCESSIBLE_TABLE_CAPTION_CHANGED = |
| "accessibleTableCaptionChanged"; |
| |
| /** |
| * Constant used to indicate that the table summary has changed |
| * The old value in the PropertyChangeEvent will be an Accessible |
| * representing the previous table summary and the new value will |
| * be an Accessible representing the new table summary. |
| * @see Accessible |
| * @see AccessibleTable |
| */ |
| public static final String ACCESSIBLE_TABLE_SUMMARY_CHANGED = |
| "accessibleTableSummaryChanged"; |
| |
| /** |
| * Constant used to indicate that table data has changed. |
| * The old value in the PropertyChangeEvent will be null and the |
| * new value will be an AccessibleTableModelChange representing |
| * the table change. |
| * @see AccessibleTable |
| * @see AccessibleTableModelChange |
| */ |
| public static final String ACCESSIBLE_TABLE_MODEL_CHANGED = |
| "accessibleTableModelChanged"; |
| |
| /** |
| * Constant used to indicate that the row header has changed |
| * The old value in the PropertyChangeEvent will be null and the |
| * new value will be an AccessibleTableModelChange representing |
| * the header change. |
| * @see AccessibleTable |
| * @see AccessibleTableModelChange |
| */ |
| public static final String ACCESSIBLE_TABLE_ROW_HEADER_CHANGED = |
| "accessibleTableRowHeaderChanged"; |
| |
| /** |
| * Constant used to indicate that the row description has changed |
| * The old value in the PropertyChangeEvent will be null and the |
| * new value will be an Integer representing the row index. |
| * @see AccessibleTable |
| */ |
| public static final String ACCESSIBLE_TABLE_ROW_DESCRIPTION_CHANGED = |
| "accessibleTableRowDescriptionChanged"; |
| |
| /** |
| * Constant used to indicate that the column header has changed |
| * The old value in the PropertyChangeEvent will be null and the |
| * new value will be an AccessibleTableModelChange representing |
| * the header change. |
| * @see AccessibleTable |
| * @see AccessibleTableModelChange |
| */ |
| public static final String ACCESSIBLE_TABLE_COLUMN_HEADER_CHANGED = |
| "accessibleTableColumnHeaderChanged"; |
| |
| /** |
| * Constant used to indicate that the column description has changed |
| * The old value in the PropertyChangeEvent will be null and the |
| * new value will be an Integer representing the column index. |
| * @see AccessibleTable |
| */ |
| public static final String ACCESSIBLE_TABLE_COLUMN_DESCRIPTION_CHANGED = |
| "accessibleTableColumnDescriptionChanged"; |
| |
| /** |
| * Constant used to indicate that the supported set of actions |
| * has changed. The old value in the PropertyChangeEvent will |
| * be an Integer representing the old number of actions supported |
| * and the new value will be an Integer representing the new |
| * number of actions supported. |
| * @see AccessibleAction |
| */ |
| public static final String ACCESSIBLE_ACTION_PROPERTY = |
| "accessibleActionProperty"; |
| |
| /** |
| * Constant used to indicate that a hypertext element has received focus. |
| * The old value in the PropertyChangeEvent will be an Integer |
| * representing the start index in the document of the previous element |
| * that had focus and the new value will be an Integer representing |
| * the start index in the document of the current element that has |
| * focus. A value of -1 indicates that an element does not or did |
| * not have focus. |
| * @see AccessibleHyperlink |
| */ |
| public static final String ACCESSIBLE_HYPERTEXT_OFFSET = |
| "AccessibleHypertextOffset"; |
| |
| /** |
| * PropertyChangeEvent which indicates that text has changed. |
| * <br> |
| * For text insertion, the oldValue is null and the newValue |
| * is an AccessibleTextSequence specifying the text that was |
| * inserted. |
| * <br> |
| * For text deletion, the oldValue is an AccessibleTextSequence |
| * specifying the text that was deleted and the newValue is null. |
| * <br> |
| * For text replacement, the oldValue is an AccessibleTextSequence |
| * specifying the old text and the newValue is an AccessibleTextSequence |
| * specifying the new text. |
| * |
| * @see #getAccessibleText |
| * @see #addPropertyChangeListener |
| * @see AccessibleTextSequence |
| */ |
| public static final String ACCESSIBLE_TEXT_PROPERTY |
| = "AccessibleText"; |
| |
| /** |
| * PropertyChangeEvent which indicates that a significant change |
| * has occurred to the children of a component like a tree or text. |
| * This change notifies the event listener that it needs to |
| * reacquire the state of the subcomponents. The oldValue is |
| * null and the newValue is the component whose children have |
| * become invalid. |
| * |
| * @see #getAccessibleText |
| * @see #addPropertyChangeListener |
| * @see AccessibleTextSequence |
| * |
| * @since 1.5 |
| */ |
| public static final String ACCESSIBLE_INVALIDATE_CHILDREN = |
| "accessibleInvalidateChildren"; |
| |
| /** |
| * PropertyChangeEvent which indicates that text attributes have changed. |
| * <br> |
| * For attribute insertion, the oldValue is null and the newValue |
| * is an AccessibleAttributeSequence specifying the attributes that were |
| * inserted. |
| * <br> |
| * For attribute deletion, the oldValue is an AccessibleAttributeSequence |
| * specifying the attributes that were deleted and the newValue is null. |
| * <br> |
| * For attribute replacement, the oldValue is an AccessibleAttributeSequence |
| * specifying the old attributes and the newValue is an |
| * AccessibleAttributeSequence specifying the new attributes. |
| * |
| * @see #getAccessibleText |
| * @see #addPropertyChangeListener |
| * @see AccessibleAttributeSequence |
| * |
| * @since 1.5 |
| */ |
| public static final String ACCESSIBLE_TEXT_ATTRIBUTES_CHANGED = |
| "accessibleTextAttributesChanged"; |
| |
| /** |
| * PropertyChangeEvent which indicates that a change has occurred |
| * in a component's bounds. |
| * The oldValue is the old component bounds and the newValue is |
| * the new component bounds. |
| * |
| * @see #addPropertyChangeListener |
| * |
| * @since 1.5 |
| */ |
| public static final String ACCESSIBLE_COMPONENT_BOUNDS_CHANGED = |
| "accessibleComponentBoundsChanged"; |
| |
| /** |
| * The accessible parent of this object. |
| * |
| * @see #getAccessibleParent |
| * @see #setAccessibleParent |
| */ |
| protected Accessible accessibleParent = null; |
| |
| /** |
| * A localized String containing the name of the object. |
| * |
| * @see #getAccessibleName |
| * @see #setAccessibleName |
| */ |
| protected String accessibleName = null; |
| |
| /** |
| * A localized String containing the description of the object. |
| * |
| * @see #getAccessibleDescription |
| * @see #setAccessibleDescription |
| */ |
| protected String accessibleDescription = null; |
| |
| /** |
| * Used to handle the listener list for property change events. |
| * |
| * @see #addPropertyChangeListener |
| * @see #removePropertyChangeListener |
| * @see #firePropertyChangeListener |
| */ |
| private PropertyChangeSupport accessibleChangeSupport = null; |
| |
| /** |
| * Used to represent the context's relation set |
| * @see #getAccessibleRelationSet |
| */ |
| private AccessibleRelationSet relationSet |
| = new AccessibleRelationSet(); |
| |
| /** |
| * Gets the accessibleName property of this object. The accessibleName |
| * property of an object is a localized String that designates the purpose |
| * of the object. For example, the accessibleName property of a label |
| * or button might be the text of the label or button itself. In the |
| * case of an object that doesn't display its name, the accessibleName |
| * should still be set. For example, in the case of a text field used |
| * to enter the name of a city, the accessibleName for the en_US locale |
| * could be 'city.' |
| * |
| * @return the localized name of the object; null if this |
| * object does not have a name |
| * |
| * @see #setAccessibleName |
| */ |
| public String getAccessibleName() { |
| return accessibleName; |
| } |
| |
| /** |
| * Sets the localized accessible name of this object. Changing the |
| * name will cause a PropertyChangeEvent to be fired for the |
| * ACCESSIBLE_NAME_PROPERTY property. |
| * |
| * @param s the new localized name of the object. |
| * |
| * @see #getAccessibleName |
| * @see #addPropertyChangeListener |
| * |
| * @beaninfo |
| * preferred: true |
| * description: Sets the accessible name for the component. |
| */ |
| public void setAccessibleName(String s) { |
| String oldName = accessibleName; |
| accessibleName = s; |
| firePropertyChange(ACCESSIBLE_NAME_PROPERTY,oldName,accessibleName); |
| } |
| |
| /** |
| * Gets the accessibleDescription property of this object. The |
| * accessibleDescription property of this object is a short localized |
| * phrase describing the purpose of the object. For example, in the |
| * case of a 'Cancel' button, the accessibleDescription could be |
| * 'Ignore changes and close dialog box.' |
| * |
| * @return the localized description of the object; null if |
| * this object does not have a description |
| * |
| * @see #setAccessibleDescription |
| */ |
| public String getAccessibleDescription() { |
| return accessibleDescription; |
| } |
| |
| /** |
| * Sets the accessible description of this object. Changing the |
| * name will cause a PropertyChangeEvent to be fired for the |
| * ACCESSIBLE_DESCRIPTION_PROPERTY property. |
| * |
| * @param s the new localized description of the object |
| * |
| * @see #setAccessibleName |
| * @see #addPropertyChangeListener |
| * |
| * @beaninfo |
| * preferred: true |
| * description: Sets the accessible description for the component. |
| */ |
| public void setAccessibleDescription(String s) { |
| String oldDescription = accessibleDescription; |
| accessibleDescription = s; |
| firePropertyChange(ACCESSIBLE_DESCRIPTION_PROPERTY, |
| oldDescription,accessibleDescription); |
| } |
| |
| /** |
| * Gets the role of this object. The role of the object is the generic |
| * purpose or use of the class of this object. For example, the role |
| * of a push button is AccessibleRole.PUSH_BUTTON. The roles in |
| * AccessibleRole are provided so component developers can pick from |
| * a set of predefined roles. This enables assistive technologies to |
| * provide a consistent interface to various tweaked subclasses of |
| * components (e.g., use AccessibleRole.PUSH_BUTTON for all components |
| * that act like a push button) as well as distinguish between sublasses |
| * that behave differently (e.g., AccessibleRole.CHECK_BOX for check boxes |
| * and AccessibleRole.RADIO_BUTTON for radio buttons). |
| * <p>Note that the AccessibleRole class is also extensible, so |
| * custom component developers can define their own AccessibleRole's |
| * if the set of predefined roles is inadequate. |
| * |
| * @return an instance of AccessibleRole describing the role of the object |
| * @see AccessibleRole |
| */ |
| public abstract AccessibleRole getAccessibleRole(); |
| |
| /** |
| * Gets the state set of this object. The AccessibleStateSet of an object |
| * is composed of a set of unique AccessibleStates. A change in the |
| * AccessibleStateSet of an object will cause a PropertyChangeEvent to |
| * be fired for the ACCESSIBLE_STATE_PROPERTY property. |
| * |
| * @return an instance of AccessibleStateSet containing the |
| * current state set of the object |
| * @see AccessibleStateSet |
| * @see AccessibleState |
| * @see #addPropertyChangeListener |
| */ |
| public abstract AccessibleStateSet getAccessibleStateSet(); |
| |
| /** |
| * Gets the Accessible parent of this object. |
| * |
| * @return the Accessible parent of this object; null if this |
| * object does not have an Accessible parent |
| */ |
| public Accessible getAccessibleParent() { |
| return accessibleParent; |
| } |
| |
| /** |
| * Sets the Accessible parent of this object. This is meant to be used |
| * only in the situations where the actual component's parent should |
| * not be treated as the component's accessible parent and is a method |
| * that should only be called by the parent of the accessible child. |
| * |
| * @param a - Accessible to be set as the parent |
| */ |
| public void setAccessibleParent(Accessible a) { |
| accessibleParent = a; |
| } |
| |
| /** |
| * Gets the 0-based index of this object in its accessible parent. |
| * |
| * @return the 0-based index of this object in its parent; -1 if this |
| * object does not have an accessible parent. |
| * |
| * @see #getAccessibleParent |
| * @see #getAccessibleChildrenCount |
| * @see #getAccessibleChild |
| */ |
| public abstract int getAccessibleIndexInParent(); |
| |
| /** |
| * Returns the number of accessible children of the object. |
| * |
| * @return the number of accessible children of the object. |
| */ |
| public abstract int getAccessibleChildrenCount(); |
| |
| /** |
| * Returns the specified Accessible child of the object. The Accessible |
| * children of an Accessible object are zero-based, so the first child |
| * of an Accessible child is at index 0, the second child is at index 1, |
| * and so on. |
| * |
| * @param i zero-based index of child |
| * @return the Accessible child of the object |
| * @see #getAccessibleChildrenCount |
| */ |
| public abstract Accessible getAccessibleChild(int i); |
| |
| /** |
| * Gets the locale of the component. If the component does not have a |
| * locale, then the locale of its parent is returned. |
| * |
| * @return this component's locale. If this component does not have |
| * a locale, the locale of its parent is returned. |
| * |
| * @exception IllegalComponentStateException |
| * If the Component does not have its own locale and has not yet been |
| * added to a containment hierarchy such that the locale can be |
| * determined from the containing parent. |
| */ |
| public abstract Locale getLocale() throws IllegalComponentStateException; |
| |
| /** |
| * Adds a PropertyChangeListener to the listener list. |
| * The listener is registered for all Accessible properties and will |
| * be called when those properties change. |
| * |
| * @see #ACCESSIBLE_NAME_PROPERTY |
| * @see #ACCESSIBLE_DESCRIPTION_PROPERTY |
| * @see #ACCESSIBLE_STATE_PROPERTY |
| * @see #ACCESSIBLE_VALUE_PROPERTY |
| * @see #ACCESSIBLE_SELECTION_PROPERTY |
| * @see #ACCESSIBLE_TEXT_PROPERTY |
| * @see #ACCESSIBLE_VISIBLE_DATA_PROPERTY |
| * |
| * @param listener The PropertyChangeListener to be added |
| */ |
| public void addPropertyChangeListener(PropertyChangeListener listener) { |
| if (accessibleChangeSupport == null) { |
| accessibleChangeSupport = new PropertyChangeSupport(this); |
| } |
| accessibleChangeSupport.addPropertyChangeListener(listener); |
| } |
| |
| /** |
| * Removes a PropertyChangeListener from the listener list. |
| * This removes a PropertyChangeListener that was registered |
| * for all properties. |
| * |
| * @param listener The PropertyChangeListener to be removed |
| */ |
| public void removePropertyChangeListener(PropertyChangeListener listener) { |
| if (accessibleChangeSupport != null) { |
| accessibleChangeSupport.removePropertyChangeListener(listener); |
| } |
| } |
| |
| /** |
| * Gets the AccessibleAction associated with this object that supports |
| * one or more actions. |
| * |
| * @return AccessibleAction if supported by object; else return null |
| * @see AccessibleAction |
| */ |
| public AccessibleAction getAccessibleAction() { |
| return null; |
| } |
| |
| /** |
| * Gets the AccessibleComponent associated with this object that has a |
| * graphical representation. |
| * |
| * @return AccessibleComponent if supported by object; else return null |
| * @see AccessibleComponent |
| */ |
| public AccessibleComponent getAccessibleComponent() { |
| return null; |
| } |
| |
| /** |
| * Gets the AccessibleSelection associated with this object which allows its |
| * Accessible children to be selected. |
| * |
| * @return AccessibleSelection if supported by object; else return null |
| * @see AccessibleSelection |
| */ |
| public AccessibleSelection getAccessibleSelection() { |
| return null; |
| } |
| |
| /** |
| * Gets the AccessibleText associated with this object presenting |
| * text on the display. |
| * |
| * @return AccessibleText if supported by object; else return null |
| * @see AccessibleText |
| */ |
| public AccessibleText getAccessibleText() { |
| return null; |
| } |
| |
| /** |
| * Gets the AccessibleEditableText associated with this object |
| * presenting editable text on the display. |
| * |
| * @return AccessibleEditableText if supported by object; else return null |
| * @see AccessibleEditableText |
| * @since 1.4 |
| */ |
| public AccessibleEditableText getAccessibleEditableText() { |
| return null; |
| } |
| |
| |
| /** |
| * Gets the AccessibleValue associated with this object that supports a |
| * Numerical value. |
| * |
| * @return AccessibleValue if supported by object; else return null |
| * @see AccessibleValue |
| */ |
| public AccessibleValue getAccessibleValue() { |
| return null; |
| } |
| |
| /** |
| * Gets the AccessibleIcons associated with an object that has |
| * one or more associated icons |
| * |
| * @return an array of AccessibleIcon if supported by object; |
| * otherwise return null |
| * @see AccessibleIcon |
| * @since 1.3 |
| */ |
| public AccessibleIcon [] getAccessibleIcon() { |
| return null; |
| } |
| |
| /** |
| * Gets the AccessibleRelationSet associated with an object |
| * |
| * @return an AccessibleRelationSet if supported by object; |
| * otherwise return null |
| * @see AccessibleRelationSet |
| * @since 1.3 |
| */ |
| public AccessibleRelationSet getAccessibleRelationSet() { |
| return relationSet; |
| } |
| |
| /** |
| * Gets the AccessibleTable associated with an object |
| * |
| * @return an AccessibleTable if supported by object; |
| * otherwise return null |
| * @see AccessibleTable |
| * @since 1.3 |
| */ |
| public AccessibleTable getAccessibleTable() { |
| return null; |
| } |
| |
| /** |
| * Support for reporting bound property changes. If oldValue and |
| * newValue are not equal and the PropertyChangeEvent listener list |
| * is not empty, then fire a PropertyChange event to each listener. |
| * In general, this is for use by the Accessible objects themselves |
| * and should not be called by an application program. |
| * @param propertyName The programmatic name of the property that |
| * was changed. |
| * @param oldValue The old value of the property. |
| * @param newValue The new value of the property. |
| * @see java.beans.PropertyChangeSupport |
| * @see #addPropertyChangeListener |
| * @see #removePropertyChangeListener |
| * @see #ACCESSIBLE_NAME_PROPERTY |
| * @see #ACCESSIBLE_DESCRIPTION_PROPERTY |
| * @see #ACCESSIBLE_STATE_PROPERTY |
| * @see #ACCESSIBLE_VALUE_PROPERTY |
| * @see #ACCESSIBLE_SELECTION_PROPERTY |
| * @see #ACCESSIBLE_TEXT_PROPERTY |
| * @see #ACCESSIBLE_VISIBLE_DATA_PROPERTY |
| */ |
| public void firePropertyChange(String propertyName, |
| Object oldValue, |
| Object newValue) { |
| if (accessibleChangeSupport != null) { |
| if (newValue instanceof PropertyChangeEvent) { |
| PropertyChangeEvent pce = (PropertyChangeEvent)newValue; |
| accessibleChangeSupport.firePropertyChange(pce); |
| } else { |
| accessibleChangeSupport.firePropertyChange(propertyName, |
| oldValue, |
| newValue); |
| } |
| } |
| } |
| } |
