org.globus.cog.gui.grapheditor.canvas.views
Interface CanvasView

All Known Subinterfaces:

StreamView

All Known Implementing Classes:

AbstractView, DotGraphView, GraphView, HtmlGraphView, ListView, NullView, PostScriptGraphView, RemoteCanvasView, SVGGraphView, TreeView, WrappedPassiveGraphView

public interface CanvasView

This interface defines methods that should be implemented by views for a canvas

Method Summary

void	activate()
void	addTransformation(GraphTransformation transformation) Adds a transformation to the chain of transformations.
void	clean() Cleans up this view.
GraphInterface	getGraph()
String	getName()
CanvasView	getNewInstance(GraphCanvas canvas)
CanvasRenderer	getRenderer()
Rectangle	getViewport()
void	invalidate() Forces the view to reevaluate its internal state.
boolean	isSelective()
void	reLayout()
void	setGraph(GraphInterface graph)
void	setRenderer(CanvasRenderer renderer) Sets the canvas to which this view belongs
void	setTransformation(GraphTransformation transformation) Sets the transformation.
void	setViewport(Rectangle r)

Method Detail

setRenderer

public void setRenderer(CanvasRenderer renderer)

Sets the canvas to which this view belongs

setTransformation

public void setTransformation(GraphTransformation transformation)

Sets the transformation. The said transformation is applied before rendering.

addTransformation

public void addTransformation(GraphTransformation transformation)

Adds a transformation to the chain of transformations. The transformations will be applied successively, in REVERSE order: Last added first.

getRenderer

public CanvasRenderer getRenderer()

getGraph

public GraphInterface getGraph()

setGraph

public void setGraph(GraphInterface graph)

getNewInstance

public CanvasView getNewInstance(GraphCanvas canvas)

invalidate

public void invalidate()

Forces the view to reevaluate its internal state. This method is called whenever the structure of the graph changes

reLayout

public void reLayout()

getName

public String getName()

clean

public void clean()

Cleans up this view. This method should be called when a view is deactivated. The view can be reused later, by invalidating it.

activate

public void activate()

setViewport

public void setViewport(Rectangle r)

getViewport

public Rectangle getViewport()

isSelective

public boolean isSelective()