com.levigo.util.swing.action
Class DummyCommand

java.lang.Object
  com.levigo.util.swing.action.DummyCommand

All Implemented Interfaces:

Command

public class DummyCommand
extends Object
implements Command

A null command used to instantiate actions from the action factory when no command string for this action is provided in the properties file.

Constructor Summary

DummyCommand()

Method Summary

boolean	canExecute(Collection<Object> args) Permission checking for a command works as follows:
void	execute(Collection<Object> args) Execute the command.
boolean	isAvailable() Returns an indicator whether the command is available and therefore integrable.
boolean	isSelected(Collection<Object> args) Returns the selected state of this command.

Methods inherited from class java.lang.Object

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

Constructor Detail

DummyCommand

public DummyCommand()

Method Detail

execute

public void execute(Collection<Object> args)

Description copied from interface: Command

Execute the command.

Specified by:

execute in interface Command

Parameters:

args - arguments for the command (contains all items for all actions inside of the context!)

See Also:

Command.execute(java.util.Collection)

canExecute

public boolean canExecute(Collection<Object> args)

Description copied from interface: Command

Permission checking for a command works as follows:

1. Check user privileges if the command is executable.
2. Ask if the command is executable with the given objects.

Specified by:

canExecute in interface Command

Parameters:

args - arguments for the command

Returns:

true - executable with these arguments,
false - impossible to execute this command with these arguments

See Also:

Command.canExecute(java.util.Collection)

isSelected

public boolean isSelected(Collection<Object> args)

Description copied from interface: Command

Returns the selected state of this command. This is typically used only for commands with a meaningful selection state.

Specified by:

isSelected in interface Command

Parameters:

args - arguments for the command

Returns:

true - selected with these arguments,
false - not selected with these arguments

See Also:

Command.isSelected(Collection)

isAvailable

public boolean isAvailable()

Description copied from interface: Command

Returns an indicator whether the command is available and therefore integrable.

Specified by:

isAvailable in interface Command

Returns:

true - available false - not available

See Also:

Command.isAvailable()