jimm.datavision.gui.cmd
Class GroupEditCommand

java.lang.Object
  jimm.datavision.gui.cmd.CommandAdapter
      jimm.datavision.gui.cmd.GroupEditCommand

All Implemented Interfaces:

Command, Nameable

public class GroupEditCommand
extends CommandAdapter

A command for changing a report's Groups.

Author:

Jim Menard, jimm@io.com

Field Summary

protected Designer	designer
protected static int	DRASTIC_CHANGE
protected java.util.Collection	newGroupItems
protected static int	NO_CHANGE
protected java.util.Collection	oldGroupItems
protected static int	ONLY_SORTING_CHANGE
protected Report	report

Fields inherited from class jimm.datavision.gui.cmd.CommandAdapter

name

Constructor Summary

GroupEditCommand(Report r, Designer designer, java.util.Collection groupItems)

Method Summary

void	perform() Performs the command.
protected void	setGroups(java.util.Collection fromList, java.util.Collection toList)
void	undo() Undoes the command.
protected int	whatChanged(java.util.Collection fromList, java.util.Collection toList) Determines the severity of the difference between the report and what we have now: NO_CHANGE, ONLY_SORTING_CHANGE, or DRASTIC_CHANGE.

Methods inherited from class jimm.datavision.gui.cmd.CommandAdapter

getName, redo, setName

Methods inherited from class java.lang.Object

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

Field Detail

NO_CHANGE

protected static final int NO_CHANGE

See Also:

Constant Field Values

ONLY_SORTING_CHANGE

protected static final int ONLY_SORTING_CHANGE

See Also:

Constant Field Values

DRASTIC_CHANGE

protected static final int DRASTIC_CHANGE

See Also:

Constant Field Values

report

protected Report report

designer

protected Designer designer

newGroupItems

protected java.util.Collection newGroupItems

oldGroupItems

protected java.util.Collection oldGroupItems

Constructor Detail

GroupEditCommand

public GroupEditCommand(Report r,
                        Designer designer,
                        java.util.Collection groupItems)

Method Detail

perform

public void perform()

Description copied from class: CommandAdapter

Performs the command. The default implementation does nothing.

Specified by:

perform in interface Command

Overrides:

perform in class CommandAdapter

undo

public void undo()

Description copied from class: CommandAdapter

Undoes the command. The default implementation does nothing.

Specified by:

undo in interface Command

Overrides:

undo in class CommandAdapter

setGroups

protected void setGroups(java.util.Collection fromList,
                         java.util.Collection toList)

whatChanged

protected int whatChanged(java.util.Collection fromList,
                          java.util.Collection toList)

Determines the severity of the difference between the report and what we have now: NO_CHANGE, ONLY_SORTING_CHANGE, or DRASTIC_CHANGE.

Parameters:

fromList - the list of groups before the pending change

toList - the list of groups after the pending change

Returns:

one of NO_CHANGE, ONLY_SORTING_CHANGE, or DRASTIC_CHANGE