org.basex.gui.view

Class ViewNotifier

java.lang.Object

org.basex.gui.view.ViewNotifier

public final class ViewNotifier
extends java.lang.Object

This class serves as a container for all existing views. The observer pattern is used to inform all views on user interactions.

Author:

BaseX Team 2005-12, BSD License, Christian Gruen

Field Summary

Fields

Modifier and Type	Field and Description
int	hist History pointer.
static int	MAXHIST Maximum history size.

Constructor Summary

Constructors

Constructor and Description
ViewNotifier(GUI main) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	context(Nodes nodes, boolean quick, View vw) Notifies all views of a context change.
void	focus(int pre, View vw) Notifies all views of a focus change.
void	hist(boolean forward) Moves around in the internal history and notifies all views of a context change.
void	init() Notifies all views of a data reference change.
void	layout() Notifies all views of layout changes.
void	mark(int mode, View vw) Notifies all views of a selection change.
void	mark(Nodes mark, View vw) Notifies all views of a selection change.
java.lang.String	tooltip(boolean back) Returns the last or next query string.
void	update() Notifies all views of updates in the data structure.

Methods inherited from class java.lang.Object

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

Field Detail

MAXHIST

public static final int MAXHIST

Maximum history size.

See Also:

Constant Field Values

hist

public int hist

History pointer.

Constructor Detail

ViewNotifier

public ViewNotifier(GUI main)

Constructor.

Parameters:

main - reference to the main window

Method Detail

init

public void init()

Notifies all views of a data reference change.

focus

public void focus(int pre,
         View vw)

Notifies all views of a focus change.

Parameters:

pre - focused pre value

vw - the calling view

mark

public void mark(Nodes mark,
        View vw)

Notifies all views of a selection change.

Parameters:

mark - marked nodes

vw - the calling view

mark

public void mark(int mode,
        View vw)

Notifies all views of a selection change. The mode flag determines what happens:

• 0: set currently focused node as marked node
• 1: add currently focused node
• 2: toggle currently focused node

Parameters:

mode - mark mode

vw - the calling view

hist

public void hist(boolean forward)

Moves around in the internal history and notifies all views of a context change.

Parameters:

forward - move forward or backward

context

public void context(Nodes nodes,
           boolean quick,
           View vw)

Notifies all views of a context change.

Parameters:

nodes - new context set

quick - quick switch

vw - the calling view

update

public void update()

Notifies all views of updates in the data structure.

layout

public void layout()

Notifies all views of layout changes.

tooltip

public java.lang.String tooltip(boolean back)

Returns the last or next query string.

Parameters:

back - back/forward flag

Returns:

query string