org.jhotdraw.draw.event

Interface ToolListener

All Superinterfaces:

java.util.EventListener

All Known Implementing Classes:

ToolAdapter

public interface ToolListener
extends java.util.EventListener

Interface implemented by observers of Tools. Design Patterns

Observer
State changes of tools can be observed by other objects. Specifically DrawingEditor observes area invalidations of tools and repaints its active drawing view accordingly.
Subject: Tool; Observer: ToolListener; Event: ToolEvent; Concrete Observer: DrawingEditor.

Method Summary

Modifier and Type	Method and Description
void	areaInvalidated(ToolEvent e) Sent when an area of the drawing view needs to be repainted.
void	boundsInvalidated(ToolEvent e) Sent when the tool has edited an area outside of the bounds of the canvas.
void	toolDone(ToolEvent event) Informs the listener that a tool has done its interaction.
void	toolStarted(ToolEvent event) Informs the listener that a tool has starteds interacting with a specific drawing view.

Method Detail

toolStarted

void toolStarted(ToolEvent event)

Informs the listener that a tool has starteds interacting with a specific drawing view.

toolDone

void toolDone(ToolEvent event)

Informs the listener that a tool has done its interaction. This method can be used to switch back to the default tool.

areaInvalidated

void areaInvalidated(ToolEvent e)

Sent when an area of the drawing view needs to be repainted.

boundsInvalidated

void boundsInvalidated(ToolEvent e)

Sent when the tool has edited an area outside of the bounds of the canvas.