accessiblecontext.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:37:15 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class AccessibleContext</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/AccessibleContext.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../javax/accessibility/AccessibleBundle.html"><B>PREV CLASS</B></A> <A HREF="../../javax/accessibility/AccessibleHyperlink.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="AccessibleContext.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.accessibility</FONT><BR>Class AccessibleContext</H2><PRE><A HREF="../../java/lang/Object.html">java.lang.Object</A> | +--<B>javax.accessibility.AccessibleContext</B></PRE><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../java/awt/Component.AccessibleAWTComponent.html">Component.AccessibleAWTComponent</A>, <A HREF="../../javax/swing/ImageIcon.AccessibleImageIcon.html">ImageIcon.AccessibleImageIcon</A>, <A HREF="../../javax/swing/JList.AccessibleJList.AccessibleJListChild.html">JList.AccessibleJList.AccessibleJListChild</A>, <A HREF="../../javax/swing/JTable.AccessibleJTable.AccessibleJTableCell.html">JTable.AccessibleJTable.AccessibleJTableCell</A>, <A HREF="../../javax/swing/table/JTableHeader.AccessibleJTableHeader.AccessibleJTableHeaderEntry.html">JTableHeader.AccessibleJTableHeader.AccessibleJTableHeaderEntry</A>, <A HREF="../../javax/swing/JTree.AccessibleJTree.AccessibleJTreeNode.html">JTree.AccessibleJTree.AccessibleJTreeNode</A>, <A HREF="../../java/awt/MenuComponent.AccessibleAWTMenuComponent.html">MenuComponent.AccessibleAWTMenuComponent</A></DD></DL><HR><DL><DT>public abstract class <B>AccessibleContext</B><DT>extends <A HREF="../../java/lang/Object.html">Object</A></DL><P>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><A HREF="../../javax/accessibility/AccessibleAction.html"><CODE>AccessibleAction</CODE></A> - 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><A HREF="../../javax/accessibility/AccessibleComponent.html"><CODE>AccessibleComponent</CODE></A> - 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><A HREF="../../javax/accessibility/AccessibleSelection.html"><CODE>AccessibleSelection</CODE></A> - 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><A HREF="../../javax/accessibility/AccessibleText.html"><CODE>AccessibleText</CODE></A> - 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><A HREF="../../javax/accessibility/AccessibleValue.html"><CODE>AccessibleValue</CODE></A> - 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><P><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_ACTION_PROPERTY">ACCESSIBLE_ACTION_PROPERTY</A></B></CODE><BR> Constant used to indicate that the supported set of actions has changed.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY">ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY</A></B></CODE><BR> Constant used to determine when the active descendant of a component has changed.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_CARET_PROPERTY">ACCESSIBLE_CARET_PROPERTY</A></B></CODE><BR> Constant used to determine when the accessibleText caret has changed.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_CHILD_PROPERTY">ACCESSIBLE_CHILD_PROPERTY</A></B></CODE><BR> Constant used to determine when Accessible children are added/removed from the object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_DESCRIPTION_PROPERTY">ACCESSIBLE_DESCRIPTION_PROPERTY</A></B></CODE><BR> Constant used to determine when the accessibleDescription property has changed.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_NAME_PROPERTY">ACCESSIBLE_NAME_PROPERTY</A></B></CODE><BR> Constant used to determine when the accessibleName property has changed.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_SELECTION_PROPERTY">ACCESSIBLE_SELECTION_PROPERTY</A></B></CODE><BR> Constant used to determine when the accessibleSelection has changed.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_STATE_PROPERTY">ACCESSIBLE_STATE_PROPERTY</A></B></CODE><BR> Constant used to determine when the accessibleStateSet property has changed.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_TABLE_CAPTION_CHANGED">ACCESSIBLE_TABLE_CAPTION_CHANGED</A></B></CODE><BR> 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.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_TABLE_COLUMN_DESCRIPTION_CHANGED">ACCESSIBLE_TABLE_COLUMN_DESCRIPTION_CHANGED</A></B></CODE><BR> 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.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_TABLE_COLUMN_HEADER_CHANGED">ACCESSIBLE_TABLE_COLUMN_HEADER_CHANGED</A></B></CODE><BR> 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.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_TABLE_MODEL_CHANGED">ACCESSIBLE_TABLE_MODEL_CHANGED</A></B></CODE><BR> Constant used to indicate that table data has changed.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleContext.html#ACCESSIBLE_TABLE_ROW_DESCRIPTION_CHANGED">ACCESSIBLE_TABLE_ROW_DESCRIPTION_CHANGED</A></B></CODE><BR> 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.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD>⌨️ 快捷键说明
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