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Eclipse Draw2d
3.3

org.eclipse.draw2d
Class ConnectionLocator

java.lang.Object
  extended by

org.eclipse.draw2d.AbstractLocator
      extended by
org.eclipse.draw2d.ConnectionLocator
All Implemented Interfaces:
Locator
Direct Known Subclasses:
ArrowLocator, BendpointLocator, MidpointLocator

public class ConnectionLocator
extends AbstractLocator

Repositions a Figure attached to a Connection when the Connection is moved. Provides for alignment at the start (source), middle, or end (target) of the Connection.


Field Summary
static int END
          Deprecated. Use TARGET
static int MIDDLE
          The middle of the Connection
static int MIDPOINT
          Deprecated. Use MIDDLE instead, since the location is not the midpoint of a line-segment, but the middle of a polyline.
static int SOURCE
          The start (or source) of the Connection
static int START
          Deprecated. Use SOURCE
static int TARGET
          The end (or target) of the Connection
 
Constructor Summary
ConnectionLocator ( Connection connection)
          Constructs a ConnectionLocator with the passed connection and MIDDLE alignment.
ConnectionLocator ( Connection connection, int align)
          Constructs a ConnectionLocator with the passed Connection and alignment.
 
Method Summary
 int getAlignment ()
          Returns the alignment of ConnectionLocator.
protected   Connection getConnection ()
          Returns connection associated with ConnectionLocator.
protected   Point getLocation ( PointList points)
          Returns a point from the passed PointList, dependent on ConnectionLocator's alignment.
protected   Point getReferencePoint ()
          Returns ConnectionLocator's reference point in absolute coordinates.
protected  void setAlignment (int align)
          Sets the alignment.
protected  void setConnection ( Connection connection)
          Sets the Connection to be associated with this ConnectionLocator.
 
Methods inherited from class org.eclipse.draw2d. AbstractLocator
getGap, getNewBounds, getRelativePosition, relocate, setGap, setRelativePosition
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

START

public static final int START
Deprecated. Use SOURCE

See Also:
Constant Field Values

SOURCE

public static final int SOURCE
The start (or source) of the Connection

See Also:
Constant Field Values

END

public static final int END
Deprecated. Use TARGET

See Also:
Constant Field Values

TARGET

public static final int TARGET
The end (or target) of the Connection

See Also:
Constant Field Values

MIDPOINT

public static final int MIDPOINT
Deprecated. Use MIDDLE instead, since the location is not the midpoint of a line-segment, but the middle of a polyline.

See Also:
Constant Field Values

MIDDLE

public static final int MIDDLE
The middle of the Connection

See Also:
Constant Field Values
Constructor Detail

ConnectionLocator

public ConnectionLocator(
Connection connection)
Constructs a ConnectionLocator with the passed connection and MIDDLE alignment.

Parameters:
connection - The Connection
Since:
2.0

ConnectionLocator

public ConnectionLocator(
Connection connection,
                         int align)
Constructs a ConnectionLocator with the passed Connection and alignment. Valid values for the alignment are integer constants SOURCE, MIDDLE, and TARGET.

Parameters:
connection - The Connection
align - The alignment
Since:
2.0
Method Detail

getAlignment

public int getAlignment()
Returns the alignment of ConnectionLocator.

Returns:
The alignment
Since:
2.0

getConnection

protected 
Connection getConnection()
Returns connection associated with ConnectionLocator.

Returns:
The Connection
Since:
2.0

getReferencePoint

protected 
Point getReferencePoint()
Returns ConnectionLocator's reference point in absolute coordinates.

Specified by:
getReferencePoint in class AbstractLocator
Returns:
The reference point
Since:
2.0

getLocation

protected 
Point getLocation(
PointList points)
Returns a point from the passed PointList, dependent on ConnectionLocator's alignment. If the alignment is SOURCE, it returns the first point in points. If TARGET, it returns the last point in points. If MIDDLE, it returns the middle of line represented by points.

Parameters:
points - The points in the Connection
Returns:
The location
Since:
2.0

setAlignment

protected void setAlignment(int align)
Sets the alignment. Possible values are SOURCE, MIDDLE, and TARGET.

Parameters:
align - The alignment
Since:
2.0

setConnection

protected void setConnection(
Connection connection)
Sets the Connection to be associated with this ConnectionLocator.

Parameters:
connection - The Connection
Since:
2.0

Eclipse Draw2d
3.3

Copyright (c) IBM Corp. and others 2000, 2007. All Rights Reserved.

 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire