| HyperlinkEvent |
|
typedict |
| |
A
HyperlinkEvent
is an event that can be handled by a
JTextPane,
when it is displaying HTML and the user clicks on or moves the pointer
into or out of a hypertext link.
The fields in a
HyperlinkEvent
are:
| href |
A
String
that represents the description of the hypertext link.
| | id |
An
Object
that must be an
int
or
String,
that identifies the type of this event.
A value that is a
String
must be the name of an event handler that can process this event.
A value that is an
int
must be a number that the
yoix.event.HandlerID
dictionary associates with an event handler that can process this event.
In practice,
id
is only used when you build an event that gets handed to
postEvent,
and in that case the value assigned to
id
is almost always a
String.
|
JTextPane
is the only component that can receive
HyperlinkEvents,
but they only arrive if the component has defined
one or more of the event handlers listed below.
| |
| Event Handlers: |
hyperlinkActivated,
hyperlinkEntered,
hyperlinkExited
| | |
| Example: |
The program,
import yoix.*.*;
JFrame f = {
Array layout = {
new JTextPane {
String text = "<a href=http://www.yoix.org/>Yoix</a>";
int mode = 1; // means HTML
int edit = FALSE; // currently required
hyperlinkActivated(Event e) {
Stream fp;
if ((fp = open(e.href, "r")) != NULL) {
printf("%s\n", readStream(fp));
close(fp);
}
}
hyperlinkEntered(Event e) {
printf("hyperlinkEntered: e=%O\n", e);
}
hyperlinkExited(Event e) {
printf("hyperlinkExited: e=%O\n", e);
}
},
};
};
f.visible = TRUE;
puts a
JTextPane
configured to display HTML in a frame and defines three functions that handle
HyperlinkEvents.
Move the pointer into and out of the hypertext link or click on it
and the appropriate event handlers will be called.
| | |
| See Also: |
ActionEvent,
AdjustmentEvent,
CaretEvent,
ChangeEvent,
ComponentEvent,
DragGestureEvent,
DragSourceEvent,
DropTargetEvent,
Event,
FocusEvent,
InvocationEvent,
invokeLater,
isDispatchThread,
ItemEvent,
KeyEvent,
ListSelectionEvent,
MouseEvent,
MouseWheelEvent,
PaintEvent,
postEvent,
TextEvent,
TreeSelectionEvent,
WindowEvent
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Yoix is a registered trademark of AT&T Intellectual Property.
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