ZoomAction.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.action;
 
import javax.swing.Action;
import net.sf.gridarta.gui.map.renderer.RendererFactory;
import net.sf.gridarta.gui.misc.MapPreview;
import net.sf.gridarta.model.archetype.Archetype;
import net.sf.gridarta.model.gameobject.GameObject;
import net.sf.gridarta.model.maparchobject.MapArchObject;
import net.sf.gridarta.model.mapcontrol.MapControl;
import net.sf.gridarta.model.mapmanager.MapManager;
import net.sf.gridarta.model.mapmanager.MapManagerListener;
import net.sf.gridarta.model.mapmodel.MapModel;
import net.sf.gridarta.utils.EditorAction;
import net.sf.japi.swing.action.ActionMethod;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public class ZoomAction<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> implements EditorAction {
 
    @NotNull
    private final RendererFactory<G, A, R> rendererFactory;
 
    @NotNull
    @SuppressWarnings("FieldCanBeLocal")
    private final MapManagerListener<G, A, R> mapManagerListener = new MapManagerListener<G, A, R>() {
 
        @Override
        public void currentMapChanged(@Nullable final MapControl<G, A, R> mapControl) {
            mapModel = mapControl == null ? null : mapControl.getMapModel();
            updateAction();
        }
 
        @Override
        public void mapCreated(@NotNull final MapControl<G, A, R> mapControl, final boolean interactive) {
        }
 
        @Override
        public void mapClosing(@NotNull final MapControl<G, A, R> mapControl) {
        }
 
        @Override
        public void mapClosed(@NotNull final MapControl<G, A, R> mapControl) {
        }
 
    };
 
    @Nullable
    private Action action;
 
    @Nullable
    private MapModel<G, A, R> mapModel;
 
    public ZoomAction(@NotNull final MapManager<G, A, R> mapManager, @NotNull final RendererFactory<G, A, R> rendererFactory) {
        this.rendererFactory = rendererFactory;
        mapManager.addMapManagerListener(mapManagerListener);
    }
 
    @ActionMethod
    public void zoom() {
        doAction(true);
    }
 
    @Override
    public void setAction(@NotNull final Action action, @NotNull final String name) {
        this.action = action;
        updateAction();
    }
 
    private void updateAction() {
        if (action != null) {
            action.setEnabled(doAction(false));
        }
    }
 
    private boolean doAction(final boolean performAction) {
        if (mapModel == null) {
            return false;
        }
 
        if (performAction) {
            new MapPreview(rendererFactory.newSimpleMapRenderer(mapModel).getFullImage());
        }
 
        return true;
    }
 
}