diva.canvas.connector
Interface ConnectorTarget

All Known Implementing Classes:

AbstractConnectorTarget, ArcTutorial.SelfPTarget, CenterTarget, ConnectorTutorial.SRTarget, LinkController.LinkTarget, PerimeterTarget, TransitionController.LinkTarget, TransitionController.LinkTarget

public interface ConnectorTarget

An object that is used to get suitable "target" sites for connectors. This class provides a way for connections to be connected to figures without knowing too many specifics about the figure being connected. Instances of this object are often given to controller objects (as in model-view-controller) so they can set up view construction and interaction. In this same package, an instance is required by ConnectorManipulator.

Version:

$Id: ConnectorTarget.java 38798 2005-07-08 20:00:01Z cxh $

Author:

John Reekie

Method Summary

Site	getHeadSite(Connector c, Figure f, double x, double y) Return a suitable site to connect the given connector's head to, based on this figure and location.
Site	getHeadSite(Connector c, Site s, double x, double y) Return a suitable site to connect a connector's head to.
Site	getHeadSite(Figure f, double x, double y) Return a suitable site to connect a connector's head to, based on this figure and location.
Site	getHeadSite(Site s, double x, double y) Deprecated. Use getHeadSite that takes a connector.
Site	getTailSite(Connector c, Figure f, double x, double y) Return a suitable site to connect the given connector's tail to, based on this figure and location.
Site	getTailSite(Connector c, Site s, double x, double y) Return a suitable site to connect a connector's tail to.
Site	getTailSite(Figure f, double x, double y) Return a suitable site to connect a connector's tail to, based on this figure and location.
Site	getTailSite(Site s, double x, double y) Deprecated. Use getTailSite that takes a connector.

Method Detail

getHeadSite

Site getHeadSite(Figure f,
                 double x,
                 double y)

Return a suitable site to connect a connector's head to, based on this figure and location. Return null if there is no suitable site. In general, it is better to use the method that takes a connector, as this gives the target a chance to disallow the connection. This method is primarily useful for manually creating new figures.

getTailSite

Site getTailSite(Figure f,
                 double x,
                 double y)

Return a suitable site to connect a connector's tail to, based on this figure and location. Return null if there is no suitable site. In general, it is better to use the method that takes a connector, as this gives the target a chance to disallow the connection. This method is primarily useful for manually creating new figures.

getHeadSite

Site getHeadSite(Site s,
                 double x,
                 double y)

Deprecated. Use getHeadSite that takes a connector.

Return a suitable site to connect a connector's head to. The passed site is usually taken to be a site that the connector is already connected to, so the target should take this into account if it has restrictions such as only allowing one connection to each site. The returned site can be the same as the passed site, which signals that the passed site is the best one available.

getTailSite

Site getTailSite(Site s,
                 double x,
                 double y)

Deprecated. Use getTailSite that takes a connector.

Return a suitable site to connect a connector's tail to. See the description for getheadSite().

getHeadSite

Site getHeadSite(Connector c,
                 Figure f,
                 double x,
                 double y)

Return a suitable site to connect the given connector's head to, based on this figure and location. Return null if there is no suitable site.

getTailSite

Site getTailSite(Connector c,
                 Figure f,
                 double x,
                 double y)

Return a suitable site to connect the given connector's tail to, based on this figure and location. Return null if there is no suitable site.

getHeadSite

Site getHeadSite(Connector c,
                 Site s,
                 double x,
                 double y)

Return a suitable site to connect a connector's head to. The passed site is usually taken to be a site that the connector is already connected to, so the target should take this into account if it has restrictions such as only allowing one connection to each site. The returned site can be the same as the passed site, which signals that the passed site is the best one available.

getTailSite

Site getTailSite(Connector c,
                 Site s,
                 double x,
                 double y)

Return a suitable site to connect a connector's tail to. See the description for getheadSite().