Class SelectListener 

java.lang.Object
   |
   +----java.awt.event.MouseAdapter
           |
           +----VisiMouseListener
                   |
                   +----SelectListener
public class SelectListener
extends VisiMouseListener
implements MouseListener, MouseMotionListener
Class definition for a mouse listener to handle selection events.

Version:
$Revision: 1.12 $, $Date: 2000/10/30 17:02:54 $
Author:
John Cavanaugh

Variable Index

o config
The configuration being used.
o dragged
A flag indicating whether the cursor has been dragged (moved while a button is held down).
o movingArea
The area (if any) being moved.
o movingNode
The node (if any) being moved.
o movingOffset
The offset from the cursor location to the upper left corner of the node or area being moved.
o net
The network being displayed.
o resizeArea
The area (if any) being resized.
o resizeAreaCorner
The 'anchor' corner of an area being resized.
o savedCursor
The original cursor.
o SEL_SQ_SIZE
o VCC_DELTA

Constructor Index

o SelectListener(VisiFrame, DisplayCanvas, Network, VisiConfig)
Constructs a select listener.

Method Index

o clearMouseVar()
Clear variables used by mouse movement routines.
o findDirection(Point, Point)
Figure out the direction from one point to another.
o mouseClicked(MouseEvent)
Handle a mouse button click.
o mouseDragged(MouseEvent)
Handle a mouse movement with the button pressed.
o mouseMoved(MouseEvent)
Handle a mouse movement with no button pressed.
o mousePressed(MouseEvent)
Handle a mouse button press.
o mouseReleased(MouseEvent)
Handle a mouse button release.
o nodeMoved()
Update a node's location after it has moved.
o popVCCInfo(Vector, Point)
Pop up a window with information about one or more VCCs.

Variables

o SEL_SQ_SIZE 
 public static final int SEL_SQ_SIZE
o VCC_DELTA 
 private static final int VCC_DELTA
o net 
 private Network net
The network being displayed.

o config 
 private VisiConfig config
The configuration being used.

o dragged 
 private boolean dragged
A flag indicating whether the cursor has been dragged (moved while a button is held down).

o movingArea 
 private Area movingArea
The area (if any) being moved.

o resizeArea 
 private Area resizeArea
The area (if any) being resized.

o movingNode 
 private Node movingNode
The node (if any) being moved.

o savedCursor 
 private Cursor savedCursor
The original cursor.

o movingOffset 
 private Point movingOffset
The offset from the cursor location to the upper left corner of the node or area being moved.

o resizeAreaCorner 
 private Point resizeAreaCorner
The 'anchor' corner of an area being resized.

Constructors

o SelectListener 
 public SelectListener(VisiFrame frame,
                       DisplayCanvas canvas,
                       Network net,
                       VisiConfig config)
Constructs a select listener.

Parameters:
frame - the parent frame.
net - the network being displayed.

Methods

o mouseClicked 
 public void mouseClicked(MouseEvent e)
Handle a mouse button click.

Parameters:
e - the event that caused the method to be invoked.
Overrides:
mouseClicked in class MouseAdapter
o mousePressed 
 public void mousePressed(MouseEvent e)
Handle a mouse button press.

Parameters:
e - the event that caused the method to be invoked.
Overrides:
mousePressed in class MouseAdapter
o mouseReleased 
 public void mouseReleased(MouseEvent e)
Handle a mouse button release.

Parameters:
e - the event that caused the method to be invoked.
Overrides:
mouseReleased in class MouseAdapter
o nodeMoved 
 private boolean nodeMoved()
Update a node's location after it has moved.

Returns:
true if the configuration was modified as a result of the move; false if it wasn't.
o findDirection 
 private double findDirection(Point a,
                              Point b)
Figure out the direction from one point to another.

Parameters:
a - the starting point.
b - the destination.
Returns:
the direction in radians from point A to point B.
o mouseDragged 
 public void mouseDragged(MouseEvent e)
Handle a mouse movement with the button pressed.

Parameters:
e - the event that caused the method to be invoked.
Overrides:
mouseDragged in class VisiMouseListener
o mouseMoved 
 public void mouseMoved(MouseEvent e)
Handle a mouse movement with no button pressed.

Parameters:
e - the event that caused the method to be invoked.
Overrides:
mouseMoved in class VisiMouseListener
o clearMouseVar 
 private void clearMouseVar()
Clear variables used by mouse movement routines.

o popVCCInfo 
 private void popVCCInfo(Vector vccList,
                         Point cursorLoc)
Pop up a window with information about one or more VCCs.

Parameters:
vccList - a list of the VCCs that information should be displayed for.
cursorLoc - the location of the mouse click that caused the window to be displayed.