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package javax.accessibility;
import java.util.*;
import java.awt.*;
import javax.swing.text.*;
Encapsulation of a link, or set of links (e.g. client side imagemap)
in a Hypertext document
Author: Peter Korn See Also:
/**
* Encapsulation of a link, or set of links (e.g. client side imagemap)
* in a Hypertext document
*
* @see Accessible
* @see Accessible#getAccessibleContext
* @see AccessibleContext
* @see AccessibleText
* @see AccessibleContext#getAccessibleText
*
* @author Peter Korn
*/
public abstract class AccessibleHyperlink implements AccessibleAction {
Since the document a link is associated with may have
changed, this method returns whether or not this Link is still valid
(with respect to the document it references).
Returns: a flag indicating whether this link is still valid with
respect to the AccessibleHypertext it belongs to
/**
* Since the document a link is associated with may have
* changed, this method returns whether or not this Link is still valid
* (with respect to the document it references).
*
* @return a flag indicating whether this link is still valid with
* respect to the AccessibleHypertext it belongs to
*/
public abstract boolean isValid();
Returns the number of accessible actions available in this Link
If there are more than one, the first one is NOT considered the
"default" action of this LINK object (e.g. in an HTML imagemap).
In general, links will have only one AccessibleAction in them.
Returns: the zero-based number of Actions in this object
/**
* Returns the number of accessible actions available in this Link
* If there are more than one, the first one is NOT considered the
* "default" action of this LINK object (e.g. in an HTML imagemap).
* In general, links will have only one AccessibleAction in them.
*
* @return the zero-based number of Actions in this object
*/
public abstract int getAccessibleActionCount();
Performs the specified Action on the object
Params: - i – zero-based index of actions
See Also: Returns: true if the action was performed; otherwise false.
/**
* Performs the specified Action on the object
*
* @param i zero-based index of actions
* @return true if the action was performed; otherwise false.
* @see #getAccessibleActionCount
*/
public abstract boolean doAccessibleAction(int i);
Returns a String description of this particular
link action. This should be a text string
associated with anchoring text, this should be the
anchor text. E.g. from HTML:
<a HREF="http://www.sun.com/access">Accessibility</a>
this method would return "Accessibility".
Similarly, from this HTML:
<a HREF="#top"><img src="top-hat.gif" alt="top hat"></a>
this method would return "top hat"
Params: - i – zero-based index of the actions
See Also: Returns: a String description of the action
/**
* Returns a String description of this particular
* link action. This should be a text string
* associated with anchoring text, this should be the
* anchor text. E.g. from HTML:
* <a HREF="http://www.sun.com/access">Accessibility</a>
* this method would return "Accessibility".
*
* Similarly, from this HTML:
* <a HREF="#top"><img src="top-hat.gif" alt="top hat"></a>
* this method would return "top hat"
*
* @param i zero-based index of the actions
* @return a String description of the action
* @see #getAccessibleActionCount
*/
public abstract String getAccessibleActionDescription(int i);
Returns an object that represents the link action,
as appropriate for that link. E.g. from HTML:
<a HREF="http://www.sun.com/access">Accessibility</a>
this method would return a
java.net.URL("http://www.sun.com/access.html");
Params: - i – zero-based index of the actions
See Also: Returns: an Object representing the hypertext link itself
/**
* Returns an object that represents the link action,
* as appropriate for that link. E.g. from HTML:
* <a HREF="http://www.sun.com/access">Accessibility</a>
* this method would return a
* java.net.URL("http://www.sun.com/access.html");
*
* @param i zero-based index of the actions
* @return an Object representing the hypertext link itself
* @see #getAccessibleActionCount
*/
public abstract Object getAccessibleActionObject(int i);
Returns an object that represents the link anchor,
as appropriate for that link. E.g. from HTML:
<a href="http://www.sun.com/access">Accessibility</a>
this method would return a String containing the text:
"Accessibility".
Similarly, from this HTML:
<a HREF="#top"><img src="top-hat.gif" alt="top hat"></a>
this might return the object ImageIcon("top-hat.gif", "top hat");
Params: - i – zero-based index of the actions
See Also: Returns: an Object representing the hypertext anchor
/**
* Returns an object that represents the link anchor,
* as appropriate for that link. E.g. from HTML:
* <a href="http://www.sun.com/access">Accessibility</a>
* this method would return a String containing the text:
* "Accessibility".
*
* Similarly, from this HTML:
* <a HREF="#top"><img src="top-hat.gif" alt="top hat"></a>
* this might return the object ImageIcon("top-hat.gif", "top hat");
*
* @param i zero-based index of the actions
* @return an Object representing the hypertext anchor
* @see #getAccessibleActionCount
*/
public abstract Object getAccessibleActionAnchor(int i);
Gets the index with the hypertext document at which this
link begins
Returns: index of start of link
/**
* Gets the index with the hypertext document at which this
* link begins
*
* @return index of start of link
*/
public abstract int getStartIndex();
Gets the index with the hypertext document at which this
link ends
Returns: index of end of link
/**
* Gets the index with the hypertext document at which this
* link ends
*
* @return index of end of link
*/
public abstract int getEndIndex();
}