hirondelle.stocks.export
Class ExportAction

Object
  AbstractAction
      ExportAction

All Implemented Interfaces:

ActionListener, Serializable, Cloneable, EventListener, Action

public final class ExportAction
extends AbstractAction

Present dialog to allow user to save all Portfolio data as a single text file.

The text file is not intended to be edited by the end user, but rather as the input to the corresponding ImportAction. The format of the file is defined by Preferences.exportSubtree(java.io.OutputStream). The file name and extension are arbitrary, and defined entirely by the user.

See Also:

Serialized Form

Field Summary

Fields inherited from class AbstractAction

changeSupport, enabled

Fields inherited from interface Action

ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

ExportAction(JFrame aFrame)
Constructor.

Method Summary

void	actionPerformed(ActionEvent event) Allow the user to choose a destination file, then write the content of all saved Portfolio objects to this file as XML.

Methods inherited from class AbstractAction

addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, isEnabled, putValue, removePropertyChangeListener, setEnabled

Methods inherited from class Object

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

Constructor Detail

ExportAction

public ExportAction(JFrame aFrame)

Constructor.

Parameters:

aFrame - parent frame to which this dialog is attached.

Method Detail

actionPerformed

public void actionPerformed(ActionEvent event)

Allow the user to choose a destination file, then write the content of all saved Portfolio objects to this file as XML.

• If a file is not selected, then take no action.
• If a nonexisting file is selected, the write proceeds immediately.
• If an existing file is selected but it has no write access, then the user is informed and asked to select a different file.
• If an existing file is selected and it has write access, then the user is informed that the file will be overwritten, and is asked to confirm this operation.

User navigation is minimized by storing the apparent directory of current interest. If the user selects this action a second time, then the file selection dialog is pre-set to this directory of interest, so that repeated navigation of the file system is often avoided.