EditorActionManager.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2015 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.maincontrol;

import java.util.ArrayList;
import java.util.Collection;
import javax.swing.Action;
import net.sf.gridarta.gui.map.mapview.MapView;
import net.sf.gridarta.gui.map.mapview.MapViewManager;
import net.sf.gridarta.gui.map.mapview.MapViewManagerListener;
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.mapcursor.MapCursorListener;
import net.sf.gridarta.utils.ActionUtils;
import net.sf.gridarta.utils.EditorAction;
import net.sf.japi.swing.action.ActionBuilder;
import net.sf.japi.swing.action.ActionBuilderFactory;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class EditorActionManager<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> {

    @NotNull
    private static final ActionBuilder ACTION_BUILDER = ActionBuilderFactory.getInstance().getActionBuilder("net.sf.gridarta");

    @NotNull
    private final MapViewManager<G, A, R> mapViewManager;

    @NotNull
    private final Collection<MapCursorListener<G, A, R>> mapCursorListeners = new ArrayList<>();

    @Nullable
    private MapView<G, A, R> currentMapView;

    @NotNull
    private final MapViewManagerListener<G, A, R> mapViewManagerListener = new MapViewManagerListener<G, A, R>() {

        @Override
        public void activeMapViewChanged(@Nullable final MapView<G, A, R> mapView) {
            final MapView<G, A, R> tmpMapView = currentMapView;
            if (tmpMapView != null) {
                for (final MapCursorListener<G, A, R> mapCursorListener : mapCursorListeners) {
                    tmpMapView.getMapCursor().removeMapCursorListener(mapCursorListener);
                }
            }
            currentMapView = mapView;
            if (mapView != null) {
                for (final MapCursorListener<G, A, R> mapCursorListener : mapCursorListeners) {
                    mapView.getMapCursor().addMapCursorListener(mapCursorListener);
                }
            }
        }

        @Override
        public void mapViewCreated(@NotNull final MapView<G, A, R> mapView) {
            // ignore
        }

        @Override
        public void mapViewClosing(@NotNull final MapView<G, A, R> mapView) {
            // ignore
        }

    };

    public EditorActionManager(@NotNull final MapViewManager<G, A, R> mapViewManager) {
        this.mapViewManager = mapViewManager;
        mapViewManager.addMapViewManagerListener(mapViewManagerListener);
        currentMapView = mapViewManager.getActiveMapView();
    }

    @NotNull
    public Action createAction(@NotNull final String name, @NotNull final String category, @NotNull final EditorAction editorAction) {
        addEditorAction(editorAction);
        return ActionUtils.newAction(ACTION_BUILDER, category, editorAction, name);
    }

    @Nullable
    public Action createActionOptional(@NotNull final String name, @NotNull final String category, @Nullable final EditorAction editorAction) {
        return editorAction == null ? null : createAction(name, category, editorAction);
    }

    @NotNull
    public Action createToggleAction(@NotNull final String name, @NotNull final String category, @NotNull final EditorAction editorAction) {
        addEditorAction(editorAction);
        return ActionUtils.newToggleAction(ACTION_BUILDER, category, editorAction, name);
    }

    private void addEditorAction(@NotNull final EditorAction editorAction) {
        if (currentMapView != null) {
            // MapViewManagerListener instances would not know this
            throw new IllegalStateException();
        }

        if (editorAction instanceof MapCursorListener) {
            final MapCursorListener<G, A, R> mapCursorListener = (MapCursorListener<G, A, R>) editorAction;
            mapCursorListeners.add(mapCursorListener);
        }
        if (editorAction instanceof MapViewManagerListener) {
            final MapViewManagerListener<G, A, R> mapViewManagerListener = (MapViewManagerListener<G, A, R>) editorAction;
            mapViewManager.addMapViewManagerListener(mapViewManagerListener);
        }
    }

}