draw.controller.handler

Class SelectHandler

java.lang.Object

draw.controller.handler.Handler

draw.controller.handler.SelectHandler

All Implemented Interfaces:

IActionInterface

public class SelectHandler
extends Handler

Field Summary

Fields inherited from interface draw.controller.IActionInterface

NoAnchor, NorthEastAnchor, NorthWestAnchor, SouthEastAnchor, SouthWestAnchor

Constructor Summary

Constructors

Constructor and Description
SelectHandler(Model model, DrawingPalette view)

Method Summary

Modifier and Type	Method and Description
boolean	complete(java.awt.Point pt, int modifiers, java.util.Optional<Element> elt) React to completion (i.e., mouseRelease) by selecting all elements within the user Selection
boolean	drag(java.awt.Point ignore, int modifiers, java.util.Optional<Element> elt, java.awt.Point current) Process drag events by extending the user selection, repainting to show the region Updated to allow moving selected objects if there is a baseElt present.
boolean	move(java.awt.Point pt, int modifiers, java.util.Optional<Element> element, int anchor) Takes on responsibility of changing cursor into a MoveCursor when over any element.
void	paint(java.awt.Graphics g) Take responsibility for showing user's selection rectangle.
boolean	start(java.awt.Point start, int modifiers, java.util.Optional<Element> elt) Select upon press, if over an element.

Methods inherited from class draw.controller.handler.Handler

completeAnchor, dragAnchor, getNext, isInterested, setNext, startAnchor

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectHandler

public SelectHandler(Model model,
                     DrawingPalette view)

Method Detail

move

public boolean move(java.awt.Point pt,
                    int modifiers,
                    java.util.Optional<Element> element,
                    int anchor)

Takes on responsibility of changing cursor into a MoveCursor when over any element.

Specified by:

move in interface IActionInterface

Overrides:

move in class Handler

Parameters:

pt - mouse location

modifiers - keyboard modifiers in effect

element - optional element in play

anchor - which anchor is affected

Returns:

whether mouse action was processed

Since:

draw.4

start

public boolean start(java.awt.Point start,
                     int modifiers,
                     java.util.Optional<Element> elt)

Select upon press, if over an element. In draw.4, modified to support moving selected objects

Specified by:

start in interface IActionInterface

Overrides:

start in class Handler

Parameters:

start - starting an element action at this mouse location

modifiers - keyboard modifiers in effect

elt - optional element in play

Returns:

whether mouse action was processed

complete

public boolean complete(java.awt.Point pt,
                        int modifiers,
                        java.util.Optional<Element> elt)

React to completion (i.e., mouseRelease) by selecting all elements within the user Selection

Specified by:

complete in interface IActionInterface

Overrides:

complete in class Handler

Parameters:

pt - ending mouse location of this mouse action

modifiers - keyboard modifiers in effect

elt - optional element in play

Returns:

whether mouse action was processed

Since:

draw.1

drag

public boolean drag(java.awt.Point ignore,
                    int modifiers,
                    java.util.Optional<Element> elt,
                    java.awt.Point current)

Process drag events by extending the user selection, repainting to show the region Updated to allow moving selected objects if there is a baseElt present.

Specified by:

drag in interface IActionInterface

Overrides:

drag in class Handler

Parameters:

ignore - original starting mouse location of this drag action

modifiers - keyboard modifiers in effect

elt - optional element in play

current - current mouse location

Returns:

whether mouse action was processed

Since:

draw.1

paint

public void paint(java.awt.Graphics g)

Take responsibility for showing user's selection rectangle.

Specified by:

paint in interface IActionInterface

Overrides:

paint in class Handler

Parameters:

g - Graphics context into which to draw whatever is necessary based on the tool

Since:

draw.1