LineConnection

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CH.ifa.draw.figures
Class LineConnection

java.lang.Object
  CH.ifa.draw.standard.AbstractFigure
      CH.ifa.draw.figures.PolyLineFigure
          CH.ifa.draw.figures.LineConnection

All Implemented Interfaces:: ConnectionFigure, Figure, FigureChangeListener, Storable, java.io.Serializable, java.lang.Cloneable, java.util.EventListener

Direct Known Subclasses:: ElbowConnection, PertDependency

public class LineConnection
extends PolyLineFigure
implements ConnectionFigure
extends PolyLineFigure
implements ConnectionFigure

A LineConnection is a standard implementation of the ConnectionFigure interface. The interface is implemented with PolyLineFigure.

See Also:: ConnectionFigure, Serialized Form

Field Summary
`protected Connector`	`fEnd`
`protected Connector`	`fStart`

Fields inherited from class CH.ifa.draw.figures.PolyLineFigure
`ARROW_TIP_BOTH, ARROW_TIP_END, ARROW_TIP_NONE, ARROW_TIP_START, fEndDecoration, fFrameColor, fPoints, fStartDecoration`

Fields inherited from interface CH.ifa.draw.framework.Figure
`POPUP_MENU`

Constructor Summary
`LineConnection()` Constructs a LineConnection.

Method Summary
`protected void`	`basicMoveBy(int dx, int dy)` Ensures that a connection is updated if the connection was moved.
`boolean`	`canConnect()` Tests whether a figure can be a connection target.
`boolean`	`canConnect(Figure start, Figure end)` Tests whether two figures can be connected.
`void`	`connectEnd(Connector end)` Sets the end figure of the connection.
`boolean`	`connectsSame(ConnectionFigure other)` Tests whether a connection connects the same figures as another ConnectionFigure.
`void`	`connectStart(Connector start)` Sets the start figure of the connection.
`void`	`disconnectEnd()` Disconnects the end figure.
`void`	`disconnectStart()` Disconnects the start figure.
`Connector`	`end()` Gets the end figure of the connection.
`Figure`	`endFigure()` Gets the end figure of the connection.
`java.awt.Point`	`endPoint()` Gets the end point.
`void`	`endPoint(int x, int y)` Sets the end point.
`void`	`figureChanged(FigureChangeEvent e)` Sent when a figure changed
`void`	`figureInvalidated(FigureChangeEvent e)` Sent when an area is invalid
`void`	`figureRemoved(FigureChangeEvent e)` Sent when a figure was removed
`void`	`figureRequestRemove(FigureChangeEvent e)` Sent when requesting to remove a figure.
`void`	`figureRequestUpdate(FigureChangeEvent e)` Sent when an update should happen.
`protected void`	`handleConnect(Figure start, Figure end)` Handles the connection of a connection.
`protected void`	`handleDisconnect(Figure start, Figure end)` Handles the disconnection of a connection.
`java.util.Vector`	`handles()` Gets the handles of the figure.
`void`	`insertPointAt(java.awt.Point p, int i)` Inserts the point and updates the connection.
`void`	`layoutConnection()` Lays out the connection.
`void`	`read(StorableInput dr)` Reads the Figure from a StorableInput.
`void`	`release()` A figure is released from the drawing.
`void`	`removePointAt(int i)` Removes the point and updates the connection.
`void`	`setPointAt(java.awt.Point p, int i)` Sets the point and updates the connection.
`Connector`	`start()` Gets the start figure of the connection.
`Figure`	`startFigure()` Gets the start figure of the connection.
`java.awt.Point`	`startPoint()` Gets the start point.
`void`	`startPoint(int x, int y)` Sets the start point.
`void`	`updateConnection()` Updates the connection.
`void`	`write(StorableOutput dw)` Stores the Figure to a StorableOutput.

Methods inherited from class CH.ifa.draw.figures.PolyLineFigure
`addPoint, basicDisplayBox, connectorAt, containsPoint, displayBox, draw, drawLine, findSegment, getAttribute, getEndDecoration, getFrameColor, getStartDecoration, isEmpty, joinSegments, locator, pointAt, pointCount, points, setAttribute, setEndDecoration, setFrameColor, setStartDecoration, splitSegment`

Methods inherited from class CH.ifa.draw.standard.AbstractFigure
`addFigureChangeListener, addToContainer, center, changed, clone, connectedTextLocator, connectionInsets, connectorVisibility, decompose, displayBox, displayBox, figures, findFigureInside, includes, invalidate, listener, moveBy, removeFigureChangeListener, removeFromContainer, size, willChange`

Methods inherited from class java.lang.Object
`equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface CH.ifa.draw.framework.ConnectionFigure
`joinSegments, pointAt, pointCount, splitSegment`

Methods inherited from interface CH.ifa.draw.framework.Figure
`addFigureChangeListener, addToContainer, basicDisplayBox, center, changed, clone, connectedTextLocator, connectionInsets, connectorAt, connectorVisibility, containsPoint, decompose, displayBox, displayBox, displayBox, draw, figures, findFigureInside, getAttribute, includes, invalidate, isEmpty, listener, moveBy, removeFigureChangeListener, removeFromContainer, setAttribute, size, willChange`

Field Detail

fStart

protected Connector fStart

fEnd

protected Connector fEnd

Constructor Detail

LineConnection

public LineConnection()

Constructs a LineConnection. A connection figure has an arrow decoration at the start and end.

Method Detail

canConnect

public boolean canConnect()

Tests whether a figure can be a connection target. ConnectionFigures cannot be connected and return false.

Specified by:: canConnect in interface Figure
Overrides:: canConnect in class AbstractFigure

basicMoveBy

protected void basicMoveBy(int dx,
                           int dy)

Ensures that a connection is updated if the connection was moved.

Overrides:: basicMoveBy in class PolyLineFigure

See Also:: AbstractFigure.moveBy(int, int)

connectStart

public void connectStart(Connector start)

Sets the start figure of the connection.

Specified by:: connectStart in interface ConnectionFigure

connectEnd

public void connectEnd(Connector end)

Sets the end figure of the connection.

Specified by:: connectEnd in interface ConnectionFigure

disconnectStart

public void disconnectStart()

Disconnects the start figure.

Specified by:: disconnectStart in interface ConnectionFigure

disconnectEnd

public void disconnectEnd()

Disconnects the end figure.

Specified by:: disconnectEnd in interface ConnectionFigure

connectsSame

public boolean connectsSame(ConnectionFigure other)

Tests whether a connection connects the same figures as another ConnectionFigure.

Specified by:: connectsSame in interface ConnectionFigure

handleDisconnect

protected void handleDisconnect(Figure start,
                                Figure end)

Handles the disconnection of a connection. Override this method to handle this event.

handleConnect

protected void handleConnect(Figure start,
                             Figure end)

Handles the connection of a connection. Override this method to handle this event.

startFigure

public Figure startFigure()

Gets the start figure of the connection.

endFigure

public Figure endFigure()

Gets the end figure of the connection.

start

public Connector start()

Gets the start figure of the connection.

Specified by:: start in interface ConnectionFigure

end

public Connector end()

Gets the end figure of the connection.

Specified by:: end in interface ConnectionFigure

canConnect

public boolean canConnect(Figure start,
                          Figure end)

Tests whether two figures can be connected.

Specified by:: canConnect in interface ConnectionFigure

startPoint

public void startPoint(int x,
                       int y)

Sets the start point.

Specified by:: startPoint in interface ConnectionFigure

endPoint

public void endPoint(int x,
                     int y)

Sets the end point.

Specified by:: endPoint in interface ConnectionFigure

startPoint

public java.awt.Point startPoint()

Gets the start point.

Specified by:: startPoint in interface ConnectionFigure

endPoint

public java.awt.Point endPoint()

Gets the end point.

Specified by:: endPoint in interface ConnectionFigure

handles

public java.util.Vector handles()

Gets the handles of the figure. It returns the normal PolyLineHandles but adds ChangeConnectionHandles at the start and end.

Specified by:: handles in interface Figure
Overrides:: handles in class PolyLineFigure

Returns:: a Vector of handles
See Also:: Handle

setPointAt

public void setPointAt(java.awt.Point p,
                       int i)

Sets the point and updates the connection.

Specified by:: setPointAt in interface ConnectionFigure
Overrides:: setPointAt in class PolyLineFigure

insertPointAt

public void insertPointAt(java.awt.Point p,
                          int i)

Inserts the point and updates the connection.

Overrides:: insertPointAt in class PolyLineFigure

removePointAt

public void removePointAt(int i)

Removes the point and updates the connection.

Overrides:: removePointAt in class PolyLineFigure

updateConnection

public void updateConnection()

Updates the connection.

Specified by:: updateConnection in interface ConnectionFigure

layoutConnection

public void layoutConnection()

Lays out the connection. This is called when the connection itself changes. By default the connection is recalculated