org.basex.gui.view
Class ViewNotifier

java.lang.Object
  org.basex.gui.view.ViewNotifier

public final class ViewNotifier
extends java.lang.Object

This class stores all views in a window and notifies views of global changes.

Author:

Workgroup DBIS, University of Konstanz 2005-09, ISC License, Christian Gruen

Field Summary

int	hist History pointer.
static int	MAXHIST Maximum history size.

Constructor Summary

ViewNotifier(GUI main)
Constructor.

Method Summary

void	add(View v) Adds a new view.
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	jump(Nodes nodes) Notifies all views of a context switch without storing nodes in the history.
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

equals, 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

add

public void add(View v)

Adds a new view.

Parameters:

v - view to be added

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

jump

public void jump(Nodes nodes)

Notifies all views of a context switch without storing nodes in the history.

Parameters:

nodes - new context nodes

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