freecol/src/net/sf/freecol/client/gui/action/ChangeAction.java

118 lines
3.6 KiB
Java

/**
* Copyright (C) 2002-2021 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.awt.event.ActionEvent;
import net.sf.freecol.client.FreeColClient;
import net.sf.freecol.common.i18n.Messages;
import net.sf.freecol.common.model.Tile;
import net.sf.freecol.common.model.Unit;
import static net.sf.freecol.common.util.CollectionUtils.*;
/**
* An action for changing the view. This action will:
*
* - Open a colony panel if the active unit is located on a tile with
* a colony.
* - If aboard a carrier then the carrier will be the active unit.
* - In other cases: switch to another unit on the same tile.
*/
public class ChangeAction extends UnitAction {
public static final String id = "changeAction";
/**
* Creates this action.
*
* @param freeColClient The {@code FreeColClient} for the game.
*/
public ChangeAction(FreeColClient freeColClient) {
super(freeColClient, id);
}
// Override FreeColAction
/**
* {@inheritDoc}
*/
@Override
protected boolean shouldBeEnabled() {
return super.shouldBeEnabled() && getGUI().getActiveUnit().hasTile();
}
/**
* {@inheritDoc}
*/
@Override
public final void update() {
super.update();
final Unit unit = getGUI().getActiveUnit();
if (unit != null && unit.hasTile()) {
if (unit.getColony() != null) {
putValue(NAME, Messages.getName("changeAction.enterColony"));
} else if (unit.isOnCarrier()) {
putValue(NAME, Messages.getName("changeAction.selectCarrier"));
} else {
putValue(NAME, Messages.getName("changeAction.nextUnitOnTile"));
}
}
}
// Interface ActionListener
/**
* {@inheritDoc}
*/
@Override
public void actionPerformed(ActionEvent ae) {
final Unit unit = getGUI().getActiveUnit();
final Tile tile = unit.getTile();
if (tile.getColony() != null) {
getGUI().showColonyPanel(tile.getColony(), unit);
} else if (unit.isOnCarrier()) {
getGUI().changeView(unit.getCarrier(), false);
} else {
boolean activeUnitFound = false;
for (Unit u : tile.getUnitList()) {
if (u == unit) {
activeUnitFound = true;
} else if (activeUnitFound
&& u.getState() == Unit.UnitState.ACTIVE
&& u.getMovesLeft() > 0) {
getGUI().changeView(u, false);
return;
}
}
Unit active = find(tile.getUnits(),
u -> (u != unit
&& u.getState() == Unit.UnitState.ACTIVE
&& u.getMovesLeft() > 0));
if (active != null) getGUI().changeView(active, false);
}
}
}