PickmapChooserModel.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.gui.panel.pickmapchooser;

import java.io.File;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import net.sf.gridarta.gui.mapfiles.MapFileNameComparator;
import net.sf.gridarta.gui.mapfiles.PickmapState;
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.mapmodel.MapFile;
import net.sf.gridarta.model.mapmodel.MapModel;
import net.sf.gridarta.model.mapmodel.MapModelListener;
import net.sf.gridarta.model.mapmodel.MapSquare;
import net.sf.gridarta.model.validation.ErrorCollector;
import net.sf.gridarta.utils.Size2D;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class PickmapChooserModel<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> implements Iterable<PickmapState<G, A, R>> {

    @NotNull
    private final List<PickmapState<G, A, R>> pickmapStates = new ArrayList<>();

    @NotNull
    private final Collection<PickmapChooserModelListener<G, A, R>> listeners = new LinkedList<>();

    @NotNull
    private final Map<MapControl<G, A, R>, MapModelListener<G, A, R>> mapModelListeners = new HashMap<>();

    public int addMapFile(@NotNull final PickmapState<G, A, R> pickmapState) {
        final int tmp = Collections.binarySearch(pickmapStates, pickmapState, MapFileNameComparator.INSTANCE);
        final int index = tmp >= 0 ? tmp : -tmp - 1;
        pickmapStates.add(index, pickmapState);
        addMapModelListener(pickmapState.getPickmap());
        return index;
    }

    public int removeMapFile(@NotNull final PickmapState<G, A, R> pickmapState) {
        final int index = pickmapStates.indexOf(pickmapState);
        if (index < 0) {
            return -1;             // might have been a pickmap that could not be loaded
        }
        removeMapModelListener(pickmapState.getPickmap());
        pickmapStates.remove(index);
        return index;
    }

    public int revertMapFile(@NotNull final MapControl<G, A, R> oldPickmap, @NotNull final PickmapState<G, A, R> pickmapState) {
        final int index = pickmapStates.indexOf(pickmapState);
        if (index < 0) {
            return -1;             // might have been a pickmap that could not be loaded
        }
        removeMapModelListener(oldPickmap);
        addMapModelListener(pickmapState.getPickmap());
        firePickmapReverted(pickmapState);
        return index;
    }

    @Nullable
    public PickmapState<G, A, R> getPickmap(@NotNull final File file) {
        for (final PickmapState<G, A, R> pickmapState : pickmapStates) {
            if (pickmapState.getFile().equals(file)) {
                return pickmapState;
            }
        }
        return null;
    }

    public boolean isEmpty() {
        return pickmapStates.isEmpty();
    }

    public int indexOf(@NotNull final PickmapState<G, A, R> pickmapState) {
        return pickmapStates.indexOf(pickmapState);
    }

    @NotNull
    @Override
    public Iterator<PickmapState<G, A, R>> iterator() {
        return Collections.unmodifiableList(pickmapStates).iterator();
    }

    @NotNull
    public PickmapState<G, A, R> get(final int index) {
        return pickmapStates.get(index);
    }

    public void clear() {
        for (final PickmapState<G, A, R> pickmapState : pickmapStates) {
            removeMapModelListener(pickmapState.getPickmap());
            pickmapState.freePickmap();
        }
        pickmapStates.clear();
    }

    public void addPickmapChooserListener(@NotNull final PickmapChooserModelListener<G, A, R> pickmapChooserModelListener) {
        listeners.add(pickmapChooserModelListener);
    }

    private void firePickmapReverted(@NotNull final PickmapState<G, A, R> pickmapState) {
        for (final PickmapChooserModelListener<G, A, R> listener : listeners) {
            listener.pickmapReverted(pickmapState);
        }
    }

    public void fireActivePickmapChanged(@Nullable final PickmapState<G, A, R> pickmapState) {
        for (final PickmapChooserModelListener<G, A, R> listener : listeners) {
            listener.activePickmapChanged(pickmapState);
        }
    }

    private void firePickmapModifiedChanged(final int index, @NotNull final PickmapState<G, A, R> pickmapState) {
        for (final PickmapChooserModelListener<G, A, R> listener : listeners) {
            listener.pickmapModifiedChanged(index, pickmapState);
        }
    }

    private void addMapModelListener(@NotNull final MapControl<G, A, R> mapControl) {
        final MapModel<G, A, R> mapModel = mapControl.getMapModel();
        final MapModelListener<G, A, R> mapModelListener = new PickmapChooserMapModelListener(mapModel);
        mapModel.addMapModelListener(mapModelListener);
        mapModelListeners.put(mapControl, mapModelListener);
    }

    private void removeMapModelListener(@NotNull final MapControl<G, A, R> mapControl) {
        final MapModelListener<G, A, R> mapModelListener = mapModelListeners.remove(mapControl);
        assert mapModelListener != null;
        mapControl.getMapModel().removeMapModelListener(mapModelListener);
    }

    private class PickmapChooserMapModelListener implements MapModelListener<G, A, R> {

        @NotNull
        private final MapModel<G, A, R> mapModel;

        private PickmapChooserMapModelListener(@NotNull final MapModel<G, A, R> mapModel) {
            this.mapModel = mapModel;
        }

        @Override
        public void mapSizeChanged(@NotNull final Size2D newSize) {
            // ignore
        }

        @Override
        public void mapSquaresChanged(@NotNull final Set<MapSquare<G, A, R>> mapSquares) {
            // ignore
        }

        @Override
        public void mapObjectsChanged(@NotNull final Set<G> gameObjects, @NotNull final Set<G> transientGameObjects) {
            // ignore
        }

        @Override
        public void errorsChanged(@NotNull final ErrorCollector<G, A, R> errors) {
            // ignore
        }

        @Override
        public void mapFileChanged(@Nullable final MapFile oldMapFile) {
            // ignore
        }

        @Override
        public void modifiedChanged() {
            int index = 0;
            for (final PickmapState<G, A, R> pickmapState : pickmapStates) {
                if (pickmapState.getPickmap().getMapModel() == mapModel) {
                    firePickmapModifiedChanged(index, pickmapState);
                    return;
                }
                index++;
            }
        }

    }

}