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org.apache.batik.apps.svgbrowser
Class HistoryBrowser

java.lang.Object
  extended by org.apache.batik.apps.svgbrowser.HistoryBrowser

public class HistoryBrowser
extends Object

History browser. Manages perform of execute, undo and redo actions.

Nested Class Summary
static interface HistoryBrowser.CommandController
          Wrapps the command's execute, undo and redo methods.
static class HistoryBrowser.CommandNamesInfo
          Contains the info on the command name being executed, undone or redone and last undoable and redoable command names.
static class HistoryBrowser.DocumentCommandController
          Lets the DOMViewerController wrap the commands.
static class HistoryBrowser.HistoryBrowserAdapter
          The adapter to provide the default behavior.
static class HistoryBrowser.HistoryBrowserEvent
          Event to pass to listener.
static interface HistoryBrowser.HistoryBrowserListener
          The HistoryBrowserListener.
 
Field Summary
protected  HistoryBrowser.CommandController commandController
          Tells the history browser how to execute, undo and redo the commands.
protected  int currentCommandIndex
          Current command pointer in history array.
protected  EventListenerList eventListeners
          Listeners list.
static int EXECUTING
          The history browser is executing the command(s).
protected  ArrayList history
          Command history.
protected  int historySize
          History size.
static int IDLE
          The history browser is in idle state - no command is being executed, undone or redone.
static int REDOING
          The history browser is redoing the command(s).
protected  int state
          The current state of the history browser.
static int UNDOING
          The history browser is undoing the command(s).
 
Constructor Summary
HistoryBrowser(HistoryBrowser.CommandController commandController)
          Constructor.
HistoryBrowser(int historySize)
          Constructor.
 
Method Summary
 void addCommand(UndoableCommand command)
          Adds the given command to history array and executes it.
 void addListener(HistoryBrowser.HistoryBrowserListener listener)
          Adds the listener to the listener list.
 void compoundRedo(int redoNumber)
          Performs redo action the given number of times.
 void compoundUndo(int undoNumber)
          Performs undo action the given number of times.
 void fireCompoundEditPerformed(HistoryBrowser.HistoryBrowserEvent event)
          Fires the compoundEditPerformed event.
 void fireDoCompoundEdit(HistoryBrowser.HistoryBrowserEvent event)
          Fires the doCompoundEdit event.
 void fireExecutePerformed(HistoryBrowser.HistoryBrowserEvent event)
          Fires the executePerformed event.
 void fireHistoryReset(HistoryBrowser.HistoryBrowserEvent event)
          Fires the historyReset event.
 void fireRedoPerformed(HistoryBrowser.HistoryBrowserEvent event)
          Fires the redoPerformed event.
 void fireUndoPerformed(HistoryBrowser.HistoryBrowserEvent event)
          Fires the undoPerformed event.
 String getLastRedoableCommandName()
          Gets the last redoable command name.
 String getLastUndoableCommandName()
          Gets the last undoable command name.
 int getState()
          Gets the state of this history browser.
 void redo()
          Redoes the last 'undone' command.
 void resetHistory()
          Clears the history array.
 void setCommandController(HistoryBrowser.CommandController newCommandController)
          Sets the commandController.
protected  void setHistorySize(int size)
          Setter for the history size.
 void undo()
          Undoes the last executed or 'redone' command.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

EXECUTING

public static final int EXECUTING
The history browser is executing the command(s).

See Also:
Constant Field Values

UNDOING

public static final int UNDOING
The history browser is undoing the command(s).

See Also:
Constant Field Values

REDOING

public static final int REDOING
The history browser is redoing the command(s).

See Also:
Constant Field Values

IDLE

public static final int IDLE
The history browser is in idle state - no command is being executed, undone or redone.

See Also:
Constant Field Values

eventListeners

protected EventListenerList eventListeners
Listeners list.

history

protected ArrayList history
Command history.

currentCommandIndex

protected int currentCommandIndex
Current command pointer in history array.

historySize

protected int historySize
History size.

state

protected int state
The current state of the history browser.

commandController

protected HistoryBrowser.CommandController commandController
Tells the history browser how to execute, undo and redo the commands. Wraps the execute, undo and redo methods

Constructor Detail

HistoryBrowser

public HistoryBrowser(HistoryBrowser.CommandController commandController)
Constructor.

HistoryBrowser

public HistoryBrowser(int historySize)
Constructor.

Parameters:
historySize - History size
Method Detail

setHistorySize

protected void setHistorySize(int size)
Setter for the history size.

Parameters:
size - New history size

setCommandController

public void setCommandController(HistoryBrowser.CommandController newCommandController)
Sets the commandController.

Parameters:
newCommandController - The newCommandController to set

addCommand

public void addCommand(UndoableCommand command)
Adds the given command to history array and executes it.

Parameters:
command - The given command

undo

public void undo()
Undoes the last executed or 'redone' command.

redo

public void redo()
Redoes the last 'undone' command.

compoundUndo

public void compoundUndo(int undoNumber)
Performs undo action the given number of times.

Parameters:
undoNumber - The given number of undo actions to perform

compoundRedo

public void compoundRedo(int redoNumber)
Performs redo action the given number of times.

Parameters:
redoNumber - The given number of redo actions to perform

getLastUndoableCommandName

public String getLastUndoableCommandName()
Gets the last undoable command name.

Returns:
String or "" if there's no any

getLastRedoableCommandName

public String getLastRedoableCommandName()
Gets the last redoable command name.

Returns:
String or "" if there's no any

resetHistory

public void resetHistory()
Clears the history array.

getState

public int getState()
Gets the state of this history browser.

Returns:
the state

addListener

public void addListener(HistoryBrowser.HistoryBrowserListener listener)
Adds the listener to the listener list.

Parameters:
listener - The listener to add

fireExecutePerformed

public void fireExecutePerformed(HistoryBrowser.HistoryBrowserEvent event)
Fires the executePerformed event.

Parameters:
event - The associated HistoryBrowserEvent event

fireUndoPerformed

public void fireUndoPerformed(HistoryBrowser.HistoryBrowserEvent event)
Fires the undoPerformed event.

Parameters:
event - The associated HistoryBrowserEvent event

fireRedoPerformed

public void fireRedoPerformed(HistoryBrowser.HistoryBrowserEvent event)
Fires the redoPerformed event.

Parameters:
event - The associated HistoryBrowserEvent event

fireHistoryReset

public void fireHistoryReset(HistoryBrowser.HistoryBrowserEvent event)
Fires the historyReset event.

Parameters:
event - The associated HistoryBrowserEvent event

fireDoCompoundEdit

public void fireDoCompoundEdit(HistoryBrowser.HistoryBrowserEvent event)
Fires the doCompoundEdit event.

Parameters:
event - The associated HistoryBrowserEvent event

fireCompoundEditPerformed

public void fireCompoundEditPerformed(HistoryBrowser.HistoryBrowserEvent event)
Fires the compoundEditPerformed event.

Parameters:
event - The associated HistoryBrowserEvent event
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