Package com.uppaal.model.core2
Class CommandManager
java.lang.Object
com.uppaal.model.core2.CommandManager
public class CommandManager extends Object
The central class for the command manager
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Constructor Summary
Constructors Constructor Description CommandManager()Default constructor.CommandManager(CommandManager orig)Copy constructor, because "clone()" idiom is badly broken and only version number is preserved anyway. -
Method Summary
Modifier and Type Method Description voidaddCommandListener(CommandListener listener)Adds editing command listenerbooleancanRedo()Can redobooleancanUndo()Can undovoidexecute(Command command)Execute a command.voidexecute(Command... commands)Execute the commandsCommandgetLastCommand()Returns the most recent command executedintgetVersion()Get the version numbervoidredo()Redo last undone command.voidremoveCommandListener(CommandListener listener)removes editing command listenervoidundo()Undo last command.
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Constructor Details
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CommandManager
public CommandManager()Default constructor. -
CommandManager
Copy constructor, because "clone()" idiom is badly broken and only version number is preserved anyway.- Parameters:
orig- the original command manager
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Method Details
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getVersion
public int getVersion()Get the version number- Returns:
- the version number
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execute
Execute a command. Increases the version number.- Parameters:
command- - The command line
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execute
Execute the commands- Parameters:
commands- - The commands
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getLastCommand
Returns the most recent command executed- Returns:
- - the most recent executed command or null if no such command
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undo
Undo last command. Decreases the version number.- Throws:
CannotUndoException- when the undo-list is empty.
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canUndo
public boolean canUndo()Can undo- Returns:
- - Undo list is empty
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redo
Redo last undone command. Increases the version number.- Throws:
CannotRedoException- when redo-list is empty
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canRedo
public boolean canRedo()Can redo- Returns:
- - Redo list is empty
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addCommandListener
Adds editing command listener- Parameters:
listener- - command listener
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removeCommandListener
removes editing command listener- Parameters:
listener- - command listener
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