org.fraid.graphics
Class GraphicsStore

java.lang.Object
  org.fraid.graphics.GraphicsStore

public abstract class GraphicsStore
extends java.lang.Object

A singleton which manages all open GraphicsPanels for the session. Can operate in two modes - Application or Applet.

See Also:

GraphicsPanel

Field Summary

protected static GraphicsStore	sCorrectVersion Points to the particular instance which handles the requests.
protected static int	sCounter
protected static boolean	sExitCalled Internal flag which tels it to call System.exit() when the store gets empty (last GraphicsPanel is closed).
protected static java.lang.String	sNegativeIndexStr
protected static java.lang.String	sOutOfBoundsStr
protected static java.util.Hashtable<java.lang.Integer,GraphicsPanel>	sStore The actual store.

Constructor Summary

GraphicsStore()

Method Summary

static int	create() In Application mode each call to create() opens a new window.
static void	exitWhenAllClosed() Call this if you want your application to exit automatically when the last GraphicsPanel is closed.
static GraphicsPanel	getAt(int aIndex) Return the GraphicsPanel wtih this number.
static java.lang.Object[]	getKeys()
static java.lang.Integer	register(GraphicsPanel aPanel) This is how the GraphicsPanels register themselves.
static java.lang.Object	remove(java.lang.Integer aKey) Remove the GraphicsPanel with the given number from the store.
static void	setSizeAt(int aIndex, int aFrameWidth, int aFrameHeight) resize the window with the given id.
static void	showAt(int aIndex, int aFrameWidth, int aFrameHeight) Make the GraphicsPanel with the given number visible.

Methods inherited from class java.lang.Object

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

Field Detail

sCorrectVersion

protected static GraphicsStore sCorrectVersion

Points to the particular instance which handles the requests.

sStore

protected static java.util.Hashtable<java.lang.Integer,GraphicsPanel> sStore

The actual store.

sCounter

protected static int sCounter

sOutOfBoundsStr

protected static final java.lang.String sOutOfBoundsStr

See Also:

Constant Field Values

sNegativeIndexStr

protected static final java.lang.String sNegativeIndexStr

See Also:

Constant Field Values

sExitCalled

protected static boolean sExitCalled

Internal flag which tels it to call System.exit() when the store gets empty (last GraphicsPanel is closed).

Constructor Detail

GraphicsStore

public GraphicsStore()

Method Detail

getKeys

public static java.lang.Object[] getKeys()

getAt

public static GraphicsPanel getAt(int aIndex)
                           throws GraphicsStoreException

Return the GraphicsPanel wtih this number.

Parameters:

aIndex - an int value

Returns:

a GraphicsPanel value

Throws:

GraphicsStoreException - if an error occurs

create

public static int create()

In Application mode each call to create() opens a new window. In Applet mode each call to create() returns the last created window (largest number). If you need to open a GraphicsPanel in Applet mode, do it not with create() but manually (it will register itself automatically).

Returns:

the id for this panel at the store.

register

public static java.lang.Integer register(GraphicsPanel aPanel)

This is how the GraphicsPanels register themselves.

Parameters:

aPanel - a GraphicsPanel value

Returns:

an Integer value

remove

public static java.lang.Object remove(java.lang.Integer aKey)

Remove the GraphicsPanel with the given number from the store. You have to handle the removed instance yourself.

Parameters:

aKey - an Integer;

Returns:

the GraphicsPanel

showAt

public static void showAt(int aIndex,
                          int aFrameWidth,
                          int aFrameHeight)
                   throws GraphicsStoreException

Make the GraphicsPanel with the given number visible.

Parameters:

aIndex - the id of the panel;

aFrameWidth - an int value

aFrameHeight - an int value

Throws:

GraphicsStoreException - if an error occurs

setSizeAt

public static void setSizeAt(int aIndex,
                             int aFrameWidth,
                             int aFrameHeight)
                      throws GraphicsStoreException

resize the window with the given id.

Parameters:

aIndex - the id of the panel;

aFrameWidth - an int value

aFrameHeight - an int value

Throws:

GraphicsStoreException - if an error occurs

exitWhenAllClosed

public static void exitWhenAllClosed()

Call this if you want your application to exit automatically when the last GraphicsPanel is closed. Convenient for scripting. org.fraid,interpreter.Fraid.main(String[]) uses this.