/**
* Copyright (C) 2002-2012 The FreeCol Team
*
* This file is part of FreeCol.
*
* FreeCol is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* FreeCol is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with FreeCol. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.freecol.client.gui.action;
import java.util.Iterator;
import org.freecolandroid.repackaged.java.awt.event.ActionEvent;
import net.sf.freecol.client.FreeColClient;
import net.sf.freecol.client.gui.GUI;
import net.sf.freecol.client.gui.i18n.Messages;
import net.sf.freecol.common.model.Tile;
import net.sf.freecol.common.model.Unit;
/**
* An action for changing the view. This action will:
*
* <ol>
* <li>Open a colony panel if the active unit is located on a tile with a colony.</li>
* <li>If onboard a carrier then the carrier will be the active unit..</li>
* <li>In other cases: switch to another unit on the same tile.
* </ol>
*/
public class ChangeAction extends UnitAction {
public static final String id = "changeAction";
/**
* Creates this action.
* @param freeColClient The main controller object for the client.
* @param gui
*/
ChangeAction(FreeColClient freeColClient, GUI gui) {
super(freeColClient, gui, id);
update();
}
/**
* Updates the "enabled"-status with the value
* returned by {@link #shouldBeEnabled} and
* updates the name of the action.
*/
@Override
public void update() {
super.update();
Unit unit = gui.getActiveUnit();
if (unit != null && unit.getTile() != null) {
if (unit.getColony() != null) {
putValue(NAME, Messages.message("changeAction.enterColony.name"));
} else if (unit.isOnCarrier()) {
putValue(NAME, Messages.message("changeAction.selectCarrier.name"));
} else {
putValue(NAME, Messages.message("changeAction.nextUnitOnTile.name"));
}
}
}
/**
* Checks if this action should be enabled.
*
* @return <code>false</code> if there is no active unit.
*/
@Override
protected boolean shouldBeEnabled() {
return super.shouldBeEnabled()
&& gui.getActiveUnit().getTile() != null;
}
/**
* Applies this action.
* @param e The <code>ActionEvent</code>.
*/
public void actionPerformed(ActionEvent e) {
Unit unit = gui.getActiveUnit();
Tile tile = unit.getTile();
if (tile.getColony() != null) {
gui.showColonyPanel(tile.getColony());
} else if (unit.isOnCarrier()) {
gui.setActiveUnit(((Unit) unit.getLocation()));
} else {
Iterator<Unit> unitIterator = tile.getUnitIterator();
boolean activeUnitFound = false;
while (unitIterator.hasNext()) {
Unit u = unitIterator.next();
if (u == unit) {
activeUnitFound = true;
} else if (activeUnitFound
&& u.getState() == Unit.UnitState.ACTIVE
&& u.getMovesLeft() > 0) {
gui.setActiveUnit(u);
return;
}
}
unitIterator = tile.getUnitIterator();
while (unitIterator.hasNext()) {
Unit u = unitIterator.next();
if (u == unit) {
return;
} else if (u.getState() == Unit.UnitState.ACTIVE
&& u.getMovesLeft() > 0) {
gui.setActiveUnit(u);
return;
}
}
}
}
}