MapViewManager.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2023 The Gridarta Developers.
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package net.sf.gridarta.gui.map.mapview;
 
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import net.sf.gridarta.model.archetype.Archetype;
import net.sf.gridarta.model.gameobject.GameObject;
import net.sf.gridarta.model.maparchobject.MapArchObject;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public class MapViewManager<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> implements Iterable<MapView<G, A, R>> {
 
    @NotNull
    private final List<MapView<G, A, R>> mapViewsList = Collections.synchronizedList(new ArrayList<>());
 
    @Nullable
    private MapView<G, A, R> activeMapView;
 
    @NotNull
    private final Collection<MapViewManagerListener<G, A, R>> listeners = new ArrayList<>();
 
    public void setActiveMapView(@NotNull final MapView<G, A, R> mapView) {
        assert mapViewsList.contains(mapView);
        mapViewsList.remove(mapView);
        mapViewsList.add(0, mapView);
        updateActiveMapView();
    }
 
    public void removeMapView(@NotNull final MapView<G, A, R> mapView) {
        assert mapViewsList.contains(mapView);
        if (!mapViewsList.contains(mapView)) {
            return;
        }
 
        mapViewsList.remove(mapView);
        for (final MapViewManagerListener<G, A, R> listener : listeners) {
            listener.mapViewClosing(mapView);
        }
        updateActiveMapView();
    }
 
    public void addMapView(@NotNull final MapView<G, A, R> mapView) {
        assert !mapViewsList.contains(mapView);
        mapViewsList.add(0, mapView);
 
        for (final MapViewManagerListener<G, A, R> listener : listeners) {
            listener.mapViewCreated(mapView);
        }
    }
 
    public void deactivateMapView(@NotNull final MapView<G, A, R> mapView) {
        assert mapViewsList.contains(mapView);
        if (mapViewsList.size() <= 1) {
            return;
        }
 
        mapViewsList.remove(mapView);
        mapViewsList.add(mapView);
        updateActiveMapView();
    }
 
    public void activateMapView(@NotNull final MapView<G, A, R> mapView) {
        assert mapViewsList.contains(mapView);
        mapViewsList.remove(mapView);
        mapViewsList.add(0, mapView);
        updateActiveMapView();
    }
 
    @NotNull
    @Override
    public Iterator<MapView<G, A, R>> iterator() {
        return Collections.unmodifiableList(mapViewsList).iterator();
    }
 
    private void updateActiveMapView() {
        final MapView<G, A, R> newActiveMapView = mapViewsList.isEmpty() ? null : mapViewsList.get(0);
        if (activeMapView == newActiveMapView) {
            return;
        }
 
        activeMapView = newActiveMapView;
        for (final MapViewManagerListener<G, A, R> listener : listeners) {
            listener.activeMapViewChanged(activeMapView);
        }
    }
 
    public void addMapViewManagerListener(@NotNull final MapViewManagerListener<G, A, R> listener) {
        listeners.add(listener);
    }
 
    public void removeMapViewManagerListener(@NotNull final MapViewManagerListener<G, A, R> listener) {
        listeners.remove(listener);
    }
 
    @Nullable
    public MapView<G, A, R> getActiveMapView() {
        return activeMapView;
    }
 
    public boolean doPrevWindow(final boolean performAction) {
        if (mapViewsList.size() <= 1) {
            return false;
        }
 
        if (performAction) {
            // XXX I might work I might not work, use AWT/Swing focus traversal
            final MapView<G, A, R> mapView = mapViewsList.remove(0);
            mapViewsList.add(mapView);
            updateActiveMapView();
        }
 
        return true;
    }
 
    public boolean doNextWindow(final boolean performAction) {
        final int size = mapViewsList.size();
        if (size <= 1) {
            return false;
        }
 
        if (performAction) {
            // XXX I might work I might not work, use AWT/Swing focus traversal
            final MapView<G, A, R> mapView = mapViewsList.remove(size - 1);
            mapViewsList.add(0, mapView);
            updateActiveMapView();
        }
 
        return true;
    }
 
}