slogo.turtle

Class TurtleField

java.lang.Object

java.awt.Component

java.awt.Container

java.awt.Window

java.awt.Frame

javax.swing.JFrame

slogo.turtle.TurtleField

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, javax.accessibility.Accessible, javax.swing.RootPaneContainer, javax.swing.WindowConstants, Context, TurtleListener

public class TurtleField
extends javax.swing.JFrame
implements TurtleListener, Context

Rudimentary view showing turtles and MVC. Illustrates simple Model/View decomposition, not meant as an example of what a real Slogo view would be. In this implementation the View creates the Model/JTurtle object.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	TurtleField.BufferedPanel Overkill with double buffering on by default, but shows how to do it.
class	TurtleField.DrawingPanel

Nested classes/interfaces inherited from class javax.swing.JFrame

javax.swing.JFrame.AccessibleJFrame

Nested classes/interfaces inherited from class java.awt.Frame

java.awt.Frame.AccessibleAWTFrame

Nested classes/interfaces inherited from class java.awt.Window

java.awt.Window.AccessibleAWTWindow, java.awt.Window.Type

Nested classes/interfaces inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

Fields

Modifier and Type	Field and Description
private javax.swing.JTextArea	firstWorkspace
private javax.swing.JPanel	infoPanel
private javax.swing.JTextField	myAngle
private TurtleField.DrawingPanel	myDisplay
private java.awt.Font	myFont
private javax.swing.JTextField	myPenInfo
private javax.swing.JComboBox<java.lang.String>	myPreviousCommands
private javax.swing.JComboBox<java.lang.String>	myStepSize
JTurtle	myTurtle
private static javax.swing.JTextArea	myTurtleOutput
private javax.swing.JTextField	myXPoint
private javax.swing.JTextField	myYPoint
private java.lang.String[]	previousCommands
private static long	serialVersionUID
private static java.util.Map<java.lang.String,Variable>	varNameToVariable

Fields inherited from class javax.swing.JFrame

accessibleContext, EXIT_ON_CLOSE, rootPane, rootPaneCheckingEnabled

Fields inherited from class java.awt.Frame

CROSSHAIR_CURSOR, DEFAULT_CURSOR, E_RESIZE_CURSOR, HAND_CURSOR, ICONIFIED, MAXIMIZED_BOTH, MAXIMIZED_HORIZ, MAXIMIZED_VERT, MOVE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR, NORMAL, NW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR, SW_RESIZE_CURSOR, TEXT_CURSOR, W_RESIZE_CURSOR, WAIT_CURSOR

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface javax.swing.WindowConstants

DISPOSE_ON_CLOSE, DO_NOTHING_ON_CLOSE, HIDE_ON_CLOSE

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Constructors

Constructor and Description
TurtleField() Creates a view of the turtle, using the default turtle representation
TurtleField(java.lang.String turtleImgLocName) Creates a view of the turtle, given by the name of the turtle image

Method Summary

Modifier and Type	Method and Description
void	chooseCommand() Replaces the text in the workspace field with the chosen command in the combo box
void	chooseFile() Allows the user to run a program from a slogo file
void	doJob() Pass a string reader of the text in the workspace onto the interpreter Also passes the command entered into the combo box of previously entered commands
void	doSteps() Make the turtle take some steps.
int	getMoveSize() Returns step size as currently selected.
java.lang.Object	getTurtle()
private void	init()
static void	main(java.lang.String[] args)
private void	makeDashBoard(javax.swing.JPanel panel) Where turtle info is displayed
static java.awt.Image	makeImage(java.lang.String imageFileName)
private void	makeSlider(javax.swing.JPanel panel) make a slider to set the turtle's heading
private javax.swing.JTextArea	makeTextArea()
private javax.swing.JTextField	makeTextField()
private void	makeUserWorkspace(javax.swing.JPanel panel) Where user can enter commands interactively to the turtle
void	printVariables() This method prints out the currently defined variables into the TurtleOutput text are
void	processTurtle(JTurtle turtle) Process a (changed) turtle, display properties and redraw.
private static void	redirectSystemStreams() Redirects the system output stream from the console to the myTurtleOutput text area
void	saveFile() Allows the user to save a program to a slogo file https://www.mkyong.com/java/how-to-write-to-file-in-java-bufferedwriter-example/
void	setOutputText(java.lang.String text) Sets the output text to the desired output, clearing it before doing so
void	setTurtle(JTurtle turtle)
void	showAngle(int angle) Display (Turtle's) angle
void	showPoint(java.awt.geom.Point2D d) display Turtle's point information
void	toggleInfoPanel()
private static void	updateTextArea(java.lang.String text) This collection of methods redirects the regular console stream to the output box so the user can see it.
java.lang.Object	value(java.lang.String name) If there are local/global variables, a variable might have a different value depending on the Context, so Contexts should support determining the value of an identifier.

Methods inherited from class javax.swing.JFrame

addImpl, createRootPane, frameInit, getAccessibleContext, getContentPane, getDefaultCloseOperation, getGlassPane, getGraphics, getJMenuBar, getLayeredPane, getRootPane, getTransferHandler, isDefaultLookAndFeelDecorated, isRootPaneCheckingEnabled, paramString, processWindowEvent, remove, repaint, setContentPane, setDefaultCloseOperation, setDefaultLookAndFeelDecorated, setGlassPane, setIconImage, setJMenuBar, setLayeredPane, setLayout, setRootPane, setRootPaneCheckingEnabled, setTransferHandler, update

Methods inherited from class java.awt.Frame

addNotify, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, remove, removeNotify, setBackground, setCursor, setExtendedState, setMaximizedBounds, setMenuBar, setOpacity, setResizable, setShape, setState, setTitle, setUndecorated

Methods inherited from class java.awt.Window

addPropertyChangeListener, addPropertyChangeListener, addWindowFocusListener, addWindowListener, addWindowStateListener, applyResourceBundle, applyResourceBundle, createBufferStrategy, createBufferStrategy, dispose, getBackground, getBufferStrategy, getFocusableWindowState, getFocusCycleRootAncestor, getFocusOwner, getFocusTraversalKeys, getIconImages, getInputContext, getListeners, getLocale, getModalExclusionType, getMostRecentFocusOwner, getOpacity, getOwnedWindows, getOwner, getOwnerlessWindows, getShape, getToolkit, getType, getWarningString, getWindowFocusListeners, getWindowListeners, getWindows, getWindowStateListeners, hide, isActive, isAlwaysOnTop, isAlwaysOnTopSupported, isAutoRequestFocus, isFocusableWindow, isFocusCycleRoot, isFocused, isLocationByPlatform, isOpaque, isShowing, isValidateRoot, pack, paint, postEvent, processEvent, processWindowFocusEvent, processWindowStateEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, reshape, setAlwaysOnTop, setAutoRequestFocus, setBounds, setBounds, setCursor, setFocusableWindowState, setFocusCycleRoot, setIconImages, setLocation, setLocation, setLocationByPlatform, setLocationRelativeTo, setMinimumSize, setModalExclusionType, setSize, setSize, setType, setVisible, show, toBack, toFront

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, print, printComponents, processContainerEvent, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resize, resize, revalidate, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setMaximumSize, setName, setPreferredSize, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.awt.MenuContainer

getFont, postEvent

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

myDisplay

private TurtleField.DrawingPanel myDisplay

infoPanel

private javax.swing.JPanel infoPanel

myXPoint

private javax.swing.JTextField myXPoint

myYPoint

private javax.swing.JTextField myYPoint

myAngle

private javax.swing.JTextField myAngle

myPenInfo

private javax.swing.JTextField myPenInfo

myTurtleOutput

private static javax.swing.JTextArea myTurtleOutput

firstWorkspace

private javax.swing.JTextArea firstWorkspace

myStepSize

private javax.swing.JComboBox<java.lang.String> myStepSize

myPreviousCommands

private javax.swing.JComboBox<java.lang.String> myPreviousCommands

previousCommands

private java.lang.String[] previousCommands

myFont

private java.awt.Font myFont

varNameToVariable

private static java.util.Map<java.lang.String,Variable> varNameToVariable

myTurtle

public JTurtle myTurtle

Constructor Detail

TurtleField

public TurtleField(java.lang.String turtleImgLocName)

Creates a view of the turtle, given by the name of the turtle image

Parameters:

turtleImgName - - the location of the turtle image file

TurtleField

public TurtleField()

Creates a view of the turtle, using the default turtle representation

Method Detail

main

public static void main(java.lang.String[] args)

value

public java.lang.Object value(java.lang.String name)

Description copied from interface: Context

If there are local/global variables, a variable might have a different value depending on the Context, so Contexts should support determining the value of an identifier.

Specified by:

value in interface Context

Parameters:

name - identifier being evaluated in this Context

Returns:

the object mapped to by the identifier in this Context AKA return the object that the identifier maps to in this context

init

private void init()

setTurtle

public void setTurtle(JTurtle turtle)

getTurtle

public java.lang.Object getTurtle()

makeSlider

private void makeSlider(javax.swing.JPanel panel)

make a slider to set the turtle's heading

makeTextField

private javax.swing.JTextField makeTextField()

makeDashBoard

private void makeDashBoard(javax.swing.JPanel panel)

Where turtle info is displayed

makeTextArea

private javax.swing.JTextArea makeTextArea()

makeUserWorkspace

private void makeUserWorkspace(javax.swing.JPanel panel)

Where user can enter commands interactively to the turtle

doJob

public void doJob()

Pass a string reader of the text in the workspace onto the interpreter Also passes the command entered into the combo box of previously entered commands

Parameters:

integer - which enter button was pressed

setOutputText

public void setOutputText(java.lang.String text)

Sets the output text to the desired output, clearing it before doing so

Parameters:

text -

printVariables

public void printVariables()

This method prints out the currently defined variables into the TurtleOutput text are

chooseCommand

public void chooseCommand()

Replaces the text in the workspace field with the chosen command in the combo box

chooseFile

public void chooseFile()

Allows the user to run a program from a slogo file

saveFile

public void saveFile()

Allows the user to save a program to a slogo file https://www.mkyong.com/java/how-to-write-to-file-in-java-bufferedwriter-example/

toggleInfoPanel

public void toggleInfoPanel()

processTurtle

public void processTurtle(JTurtle turtle)

Process a (changed) turtle, display properties and redraw.

Specified by:

processTurtle in interface TurtleListener

Parameters:

turtle - is the turtle being displayed

showPoint

public void showPoint(java.awt.geom.Point2D d)

display Turtle's point information

showAngle

public void showAngle(int angle)

Display (Turtle's) angle

Parameters:

angle - is the angle displayed

updateTextArea

private static void updateTextArea(java.lang.String text)

This collection of methods redirects the regular console stream to the output box so the user can see it.

Parameters:

text -

redirectSystemStreams

private static void redirectSystemStreams()

Redirects the system output stream from the console to the myTurtleOutput text area

doSteps

public void doSteps()

Make the turtle take some steps.

getMoveSize

public int getMoveSize()

Returns step size as currently selected.

Returns:

the current step size

makeImage

public static java.awt.Image makeImage(java.lang.String imageFileName)
                                throws java.io.IOException

Parameters:

imageFileName -

Returns:

the image at that filename

Throws:

java.io.IOException - if there is an error reading in the file