draw.controller.visitors

Class AnchorVisitor

java.lang.Object

draw.controller.visitors.AnchorVisitor

All Implemented Interfaces:

Visitor

public class AnchorVisitor
extends java.lang.Object
implements Visitor

Visitor that visits all elements and determines whether the target point is contained within any anchor of a selected element (which might be a group one).

Since:

draw.2

Constructor Summary

Constructors

Constructor and Description
AnchorVisitor(java.awt.Point pt) Constructs the visitor.

Method Summary

Modifier and Type	Method and Description
int	getCorner() Visitor result.
java.util.Optional<Element>	getElement() Visitor result.
void	visit(Element elt) Visit each individual leaf element.
void	visit(Group group) Once a group is selected, none of its interior elements can be selected, so this terminates the search.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AnchorVisitor

public AnchorVisitor(java.awt.Point pt)

Constructs the visitor.

Parameters:

pt - Desired point

Method Detail

getElement

public java.util.Optional<Element> getElement()

Visitor result.

Returns:

Optional element located, or Optional.empty()

getCorner

public int getCorner()

Visitor result.

Returns:

anchor corner detected, or IActionInterface.NoAnchor if none.

visit

public void visit(Element elt)

Description copied from interface: Visitor

Visit each individual leaf element.

Specified by:

visit in interface Visitor

Parameters:

elt - Leaf element being visited

visit

public void visit(Group group)

Once a group is selected, none of its interior elements can be selected, so this terminates the search. If the group is not selected, then dive into each elment to see if one of them is selected.

Specified by:

visit in interface Visitor

Parameters:

group - Group element being visited