edu.hws.jcm.draw
Class LimitControlPanel

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--edu.hws.jcm.draw.LimitControlPanel

All Implemented Interfaces:

javax.accessibility.Accessible, java.awt.event.ActionListener, java.util.EventListener, java.awt.image.ImageObserver, InputObject, Limits, java.awt.MenuContainer, java.io.Serializable, Tieable

public class LimitControlPanel

extends java.awt.Panel

implements InputObject, Tieable, Limits, java.awt.event.ActionListener

A LimitControlPanel has four input boxes for specifying the xmin, xmax, ymin, and ymax of a CoodinateRect. You can actually add more than one CoordinteRect to the LimitControlPanel. This will synchronize the coordinate systems on the all the CoordinateRects that is controlls.

A LimitControlPanel can also contain a number of standard buttons, such as buttons for zooming the coordinates in and out. The buttons are specfied using constants defined in this class. It is possible to obtain standard buttons so that they can be displayed outside the LimitControlPanel. Furthermore, it is also possible to add other components to the panel, using the addRange(), addComponent(), and addComponentPair() methods. (The standard add() method from the Component class is overridded to call addComponent().) Any VariableInput added to the LimitControl Panel will appear with its name as a label, just above the input box.

Ordinarily, all the components are just stacked up vertically. However, if you set the useTwoColumnsIfPossible property to true, then they will be in two columns, unless the width of the Panel is too small for two columns. Pairs of items added with addRange() or addComponentPair() will appear on the same row. An item added with addComponent() will appear on a row by itself. As for the standard buttons, the following pairs will appear together, IF they are added at the same time: SET_LIMITS and EQUALUIZE; ZOOM_IN and ZOOM_OUT; SAVE and RESTORE.

A LimitControlPanel can have an error reporter, which is used to report any errors that are found in the input boxes for xmin, xmax, ymin, ymax (or other VariableInputs added with addRange()). Except for these input boxes, other coponents are NOT checked for errors.

See Also:

Serialized Form

Inner classes inherited from class java.awt.Panel

java.awt.Panel.AccessibleAWTPanel

Inner classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent

Field Summary

static int	ALL_BUTTONS A constant that can be used in the addButton() method to add all possible buttons to the LimitControlPanel.
protected int	buttons Set of installed buttons.
protected CoordinateRect	coords The first CoordinateRect tied to this LimitControlPanel.
static int	EQUALIZE A constant that can be used in the addButton() method to add a button to the LimitControlPanel.
protected ErrorReporter	errorReporter For reporting errors in user input.
protected java.util.Vector	items Vector of components and component pairs that have been added to this panel, including at least the xmin, xmax, ymin, ymax input boxes.
static int	RESTORE A constant that can be used in the addButton() method to add a button to the LimitControlPanel.
static int	SAVE A constant that can be used in the addButton() method to add a button to the LimitControlPanel.
protected long	serialNumber This is increased when the user changes the limits.
static int	SET_LIMITS A constant that can be used in the addButton() method to add a button to the LimitControlPanel.
protected Tie	syncWith A Tie holding this panel and the CoordinateRects that it controls.
protected boolean	twoColumn Use two columns for display, if possible.
protected VariableInput	xmax The input boxes for the x- and y-value ranges.
protected VariableInput	xmin The input boxes for the x- and y-value ranges.
protected VariableInput	ymax The input boxes for the x- and y-value ranges.
protected VariableInput	ymin The input boxes for the x- and y-value ranges.
static int	ZOOM_IN A constant that can be used in the addButton() method to add a button to the LimitControlPanel.
static int	ZOOM_OUT A constant that can be used in the addButton() method to add a button to the LimitControlPanel.

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

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

Constructor Summary

LimitControlPanel()
Create a LimitControlPanel containing input boxes labeled "xmin", "xmax", "ymin", "ymax" and a SET_LIMITS button.

LimitControlPanel(int buttonsToAdd, boolean useTwoColumnsIfPossible)
Create a LimitControlPanel containing input boxes labeled "xmin", "xmax", "ymin", "ymax" and whatever buttons are in the set specified by the first parameter.

LimitControlPanel(java.lang.String xminName, java.lang.String xmaxName, java.lang.String yminName, java.lang.String ymaxName, int buttonsToAdd, boolean useTwoColumnsIfPossible)
Create a LimitControlPanel containing input boxes labeled with the given names and containing whatever buttons are in the set buttonsToAdd.

Method Summary

void	actionPerformed(java.awt.event.ActionEvent evt) Handle a click on one of the standard buttons.
java.awt.Component	add(java.awt.Component c) Redefine this method from the Component class to make it a synonym for addComponent(c);
void	addButtons(int buttonSet) Add the buttons in buttonSet to the panel, if they are not already there.
void	addComponent(java.awt.Component c) Add a component to the panel.
void	addComponentPair(java.awt.Component c1, java.awt.Component c2) Add two components to the panel.
void	addCoords(CoordinateRect coords) Add a CoordinateRect to be controlled by this LimitControlPanel.
void	addCoords(DisplayCanvas canvas) Add the first CoordinateRect from the canvas to be controlled by this LimitControlPanel.
void	addRange(VariableInput v1, VariableInput v2) Add two VariableInputs to the panel.
void	checkInput() Check the input boxes in this panel.
java.awt.Button	getButton(int buttonCode) Get a Button corresponding to one of the six button types defined by the constants SET_LIMITS, EQUALIZE, ZOOM_IN, ZOOM_OUT, SAVE, and RESTORE in this class.
ErrorReporter	getErrorReporter() Get the ErrorReporter that is used to report errors in the user's input.
double[]	getLimits() Get the values in the xmin, xmax, ymin, and ymax input boxes.
java.awt.Dimension	getPreferredSize() Compute the preferred size of this panel.
long	getSerialNumber() Part of the Tieable interface, and not meant to be called directly.
boolean	getUseTwoColumnsIfPossible() Get the value of the "useTwoColumnsIfPossible" property of this panel.
void	notifyControllerOnChange(Controller c) Method required by CheckInput interface.
void	paint(java.awt.Graphics g) Draw the input box labels.
void	processComponentEvent(java.awt.event.ComponentEvent evt) Recompute component locations when the panel is resized.
void	setErrorReporter(ErrorReporter rep) Set the ErrorReporter that is used to report errors in the user's input.
void	setLimits(double[] limits) Set the values in the xmin, xmax, ymin, and ymax input boxes.
void	setUseTwoColumnsIfPossible(boolean two) Set to true if you want the components to be shown in two columns (provided the panel is wide enough).
void	sync(Tie t, Tieable newest) Part of the Tieable interface, and not meant to be called directly.

Methods inherited from class java.awt.Panel

addNotify, getAccessibleContext

Methods inherited from class java.awt.Container

add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getInsets, getLayout, getListeners, getMaximumSize, getMinimumSize, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setFont, setLayout, update, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isDisplayable, isDoubleBuffered, isEnabled, isFocusTraversable, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

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

Field Detail

SET_LIMITS

public static final int SET_LIMITS

A constant that can be used in the addButton() method to add a button to the LimitControlPanel. This represents a button that will set the limits using the values in the input boxes. (This is also done when the user presses return in one of the boxes.)

EQUALIZE

public static final int EQUALIZE

A constant that can be used in the addButton() method to add a button to the LimitControlPanel. This represents a button that will equalize the scales on the axes (of the first CoordinateRect that was added to this panel).

ZOOM_IN

public static final int ZOOM_IN

A constant that can be used in the addButton() method to add a button to the LimitControlPanel. This represents a button that will zoom in on the center of the coordinate rect.

ZOOM_OUT

public static final int ZOOM_OUT

A constant that can be used in the addButton() method to add a button to the LimitControlPanel. This represents a button that will zoom out from the center of the coordinate rect.

SAVE

public static final int SAVE

A constant that can be used in the addButton() method to add a button to the LimitControlPanel. This represents a button that will save the current limits, so they can be restored later with the restore button.

RESTORE

public static final int RESTORE

A constant that can be used in the addButton() method to add a button to the LimitControlPanel. This represents a button that will restore previously saved coordinates. The coords are those that were saved with the save button, or if none were saved in that way, then the original coordinates that the CoordinateRect had when it was created.

ALL_BUTTONS

public static final int ALL_BUTTONS

A constant that can be used in the addButton() method to add all possible buttons to the LimitControlPanel.

buttons

protected int buttons

Set of installed buttons.

twoColumn

protected boolean twoColumn

Use two columns for display, if possible.

xmin

protected VariableInput xmin

The input boxes for the x- and y-value ranges.

xmax

protected VariableInput xmax

The input boxes for the x- and y-value ranges.

ymin

protected VariableInput ymin

The input boxes for the x- and y-value ranges.

ymax

protected VariableInput ymax

The input boxes for the x- and y-value ranges.

serialNumber

protected long serialNumber

This is increased when the user changes the limits. (The -1 will make this LimitControlPanel get its limits from the first CoordinateRect that is added to it.) This variable is used to implement syncronization of limits with the limits on CoordinateRects.

syncWith

protected Tie syncWith

A Tie holding this panel and the CoordinateRects that it controls.

errorReporter

protected ErrorReporter errorReporter

For reporting errors in user input.

coords

protected CoordinateRect coords

The first CoordinateRect tied to this LimitControlPanel.

items

protected java.util.Vector items

Vector of components and component pairs that have been added to this panel, including at least the xmin, xmax, ymin, ymax input boxes.

Constructor Detail

LimitControlPanel

public LimitControlPanel()

Create a LimitControlPanel containing input boxes labeled "xmin", "xmax", "ymin", "ymax" and a SET_LIMITS button. The components are shown in a single column.

LimitControlPanel

public LimitControlPanel(int buttonsToAdd,
                         boolean useTwoColumnsIfPossible)

Create a LimitControlPanel containing input boxes labeled "xmin", "xmax", "ymin", "ymax" and whatever buttons are in the set specified by the first parameter.

Parameters:

buttonsToAdd - The set of buttons to be added to the panel. Can consist of one or more of the constants SET_LIMITS, EQUALIZE, ZOOM_IN, ZOOM_OUT, SAVE, and RESTORE, or'ed together.

useTwoColumnsIfPossible - If this is true, then the components in the panel will be arranged into two columns instead of one (assuming that there is room).

LimitControlPanel

public LimitControlPanel(java.lang.String xminName,
                         java.lang.String xmaxName,
                         java.lang.String yminName,
                         java.lang.String ymaxName,
                         int buttonsToAdd,
                         boolean useTwoColumnsIfPossible)

Create a LimitControlPanel containing input boxes labeled with the given names and containing whatever buttons are in the set buttonsToAdd. buttonsToAdd should be formed by or-ing together constants such as SET_LIMITS from this class. The last parameter specifies whether to show the components in two columns.

Parameters:

xminName - Name to be used as a label for the xmin input box.

xmaxName - Name to be used as a label for the xmax input box.

yminName - Name to be used as a label for the ymin input box.

xmaxName - Name to be used as a label for the ymax input box.

buttonsToAdd - The set of buttons to be added to the panel. Can consist of one or more of the constants SET_LIMITS, EQUALIZE, ZOOM_IN, ZOOM_OUT, SAVE, and RESTORE, or'ed together.

useTwoColumnsIfPossible - If this is true, then the components in the panel will be arranged into two columns instead of one (assuming that there is room).

Method Detail

addCoords

public void addCoords(CoordinateRect coords)

Add a CoordinateRect to be controlled by this LimitControlPanel. When the user changes the limits in this LimitControlPanel, the limits are also changed on the CoordinateRect to match. If the limits on the CoordinateRect change for some other reason, then the limits in the panel are changed to match. If multiple CoordinateRects are added, the limits on all the CoordinateRects will be synchronized with each other and with the limits in the panel.

addCoords

public void addCoords(DisplayCanvas canvas)

Add the first CoordinateRect from the canvas to be controlled by this LimitControlPanel. (Just calls addCoords(canvas.getCoordinateRect()).)

setErrorReporter

public void setErrorReporter(ErrorReporter rep)

Set the ErrorReporter that is used to report errors in the user's input. Note that only the input boxes for xmin, xmax, ymin, and ymax and any VariableInputs added with the addRange() method are checked.

getErrorReporter

public ErrorReporter getErrorReporter()

Get the ErrorReporter that is used to report errors in the user's input. Note that only the input boxes for xmin, xmax, ymin, and ymax and any VariableInputs added with the addRange() method are checked.

setUseTwoColumnsIfPossible

public void setUseTwoColumnsIfPossible(boolean two)

Set to true if you want the components to be shown in two columns (provided the panel is wide enough).

getUseTwoColumnsIfPossible

public boolean getUseTwoColumnsIfPossible()

Get the value of the "useTwoColumnsIfPossible" property of this panel.

addComponent

public void addComponent(java.awt.Component c)

Add a component to the panel. If two-column format is used, it will be shown on a line by itself. Note that the component shouldn't be too wide, or it will make the Panel stretch. This component is NOT checked for input errors. If it is an input object or a computable, it should be added to a Controller. For an input object, some Controller should be set up to be notified when the value changes. (You have to do this by hand, even if you use JCMPanels!!)

addComponentPair

public void addComponentPair(java.awt.Component c1,
                             java.awt.Component c2)

Add two components to the panel. If two-column format is used, they will be shown on the same row. Note that the components shouldn't be too wide, or they will make the Panel stretch. These components are NOT checked for input errors. If they are input objects or computables, they should be added to another Controller. For an input object, some Controller should be set up to be notified when the value changes. (You have to do this by hand, even if you use JCMPanels!!)

addRange

public void addRange(VariableInput v1,
                     VariableInput v2)

Add two VariableInputs to the panel. These ARE checked for input when the user presses return or clicks the SET_LIMITS button. Furthermore, it is checked that the value in the second input box is greater than the value in the first, and an error is reported if it is not. This method is used to add the xmin, xmax, ymin, and ymax boxes. It could possibly be used to add tmin and tmax boxes for the limits on the parameter of a parametric curve, for example.

addButtons

public void addButtons(int buttonSet)

Add the buttons in buttonSet to the panel, if they are not already there. buttonSet should be formed by or-ing together some of the constants SET_LIMITS, ZOOM_IN, etc.

getButton

public java.awt.Button getButton(int buttonCode)

Get a Button corresponding to one of the six button types defined by the constants SET_LIMITS, EQUALIZE, ZOOM_IN, ZOOM_OUT, SAVE, and RESTORE in this class. The button can be added to a different panel, but it will still affect this LimitControlPanel in the usual way. It is possible to change the name of the button, and it will still work correctly. Each call to this method creates a new button, even if multiple buttons of the same type are created.

Parameters:

buttonCode - one of the constants from this class (SET_LIMITS, EQUALIZE, etc.) specifying one of the types of button for controlling limits. If the parameter is not one of these constants, and IllegalArgumentException will be thrown.

add

public java.awt.Component add(java.awt.Component c)

Redefine this method from the Component class to make it a synonym for addComponent(c);

Overrides:

add in class java.awt.Container

notifyControllerOnChange

public void notifyControllerOnChange(Controller c)

Method required by CheckInput interface. In this class, it does nothing because responses to inputs are handled by the LimitControlPanel itself.

Specified by:

notifyControllerOnChange in interface InputObject

checkInput

public void checkInput()

Check the input boxes in this panel. This is generally not meant to be called from outside this class, except by a Controller.

Specified by:

checkInput in interface InputObject

getSerialNumber

public long getSerialNumber()

Part of the Tieable interface, and not meant to be called directly.

Specified by:

getSerialNumber in interface Tieable

sync

public void sync(Tie t,
                 Tieable newest)

Part of the Tieable interface, and not meant to be called directly.

Specified by:

sync in interface Tieable

getLimits

public double[] getLimits()

Get the values in the xmin, xmax, ymin, and ymax input boxes. Note that this can throw a JCMError.

Specified by:

getLimits in interface Limits

setLimits

public void setLimits(double[] limits)

Set the values in the xmin, xmax, ymin, and ymax input boxes.

Specified by:

setLimits in interface Limits

Following copied from interface: edu.hws.jcm.awt.Limits

Parameters:

A - 4-element array containing the new xmin, xmax, ymin, and ymax.

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent evt)

Handle a click on one of the standard buttons. Not meant to be called directly.

Specified by:

actionPerformed in interface java.awt.event.ActionListener

paint

public void paint(java.awt.Graphics g)

Draw the input box labels. Not meant to be called directly.

Overrides:

paint in class java.awt.Container

getPreferredSize

public java.awt.Dimension getPreferredSize()

Compute the preferred size of this panel. Not meant to be called directly.

Overrides:

getPreferredSize in class java.awt.Container

processComponentEvent

public void processComponentEvent(java.awt.event.ComponentEvent evt)

Recompute component locations when the panel is resized. Not meant to be called directly.

Overrides:

processComponentEvent in class java.awt.Component