public FileSave(JComponent aAppFrame, DatabaseHolder aHolder, Preferences aPrefs) {
super(GuiUtil.getText("action.filesave"));
dbHolder = aHolder;
application = aAppFrame;
prefs = aPrefs;
// Install the icon.
final ImageIcon lUIDIcon =
new ImageIcon(FileSave.class.getClassLoader().getResource("assets/save.png"));
putValue(SMALL_ICON, lUIDIcon);
// Decide if the action is enabled or not right now.
// Initialize current state using the current database.
if (dbHolder.getCurrentDatabase() != null) {
setEnabled(dbHolder.getCurrentDatabase().isChanged());
dbHolder
.getCurrentDatabase()
.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
// Decide if the action is enabled or not right now.
if (dbHolder.getCurrentDatabase() != null)
setEnabled(dbHolder.getCurrentDatabase().isChanged());
}
});
}
// Add a listener chain so that the state is maintained if the database changes.
dbHolder.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent aHolderEvt) {
final ChangeViewDatabase lOldDb = (ChangeViewDatabase) aHolderEvt.getOldValue();
final ChangeViewDatabase lNewDb = (ChangeViewDatabase) aHolderEvt.getNewValue();
// We must not forget to stop listening to the old database.
if (lOldDb != null) {
lOldDb.removePropertyChangeListener(this);
}
// We can now investigate the state of the new database and
// add a listener to the new database.
if (lNewDb != null) {
setEnabled(lNewDb.isChanged());
lNewDb.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent aDbEvent) {
// Decide if the action is enabled or not right now.
if (dbHolder.getCurrentDatabase() != null)
setEnabled(dbHolder.getCurrentDatabase().isChanged());
}
});
}
}
});
}
protected void initializeAction(
JComponent aAppFrame, DatabaseHolder aHolder, Preferences aPrefs) {
dbHolder = aHolder;
application = aAppFrame;
prefs = aPrefs;
// Decide if the action is enabled or not right now.
// Initialize current state using the current database.
if (dbHolder.getCurrentDatabase() != null) {
setEnabled(true);
dbHolder
.getCurrentDatabase()
.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
// Decide if the action is enabled or not right now.
setEnabled(dbHolder.getCurrentDatabase() != null);
}
});
}
// Add a listener chain so that the state is maintained if the database changes.
dbHolder.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent aHolderEvt) {
final ChangeViewDatabase lOldDb = (ChangeViewDatabase) aHolderEvt.getOldValue();
final ChangeViewDatabase lNewDb = (ChangeViewDatabase) aHolderEvt.getNewValue();
// We must not forget to stop listening to the old database.
if (lOldDb != null) {
lOldDb.removePropertyChangeListener(this);
}
// We can now investigate the state of the new database and
// add a listener to the new database.
if (lNewDb != null) {
setEnabled(true);
lNewDb.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent aDbEvent) {
// Decide if the action is enabled or not right now.
setEnabled(dbHolder.getCurrentDatabase() != null);
}
});
}
}
});
}