MapMouseListener.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.mapuserlistener;

import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import net.sf.gridarta.gui.map.event.MouseOpEvent;
import net.sf.gridarta.gui.map.event.MouseOpListener;
import net.sf.gridarta.gui.map.mapview.MapView;
import net.sf.gridarta.gui.map.renderer.MapRenderer;
import net.sf.gridarta.gui.panel.tools.ToolPalette;
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 MapMouseListener<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> {

    @NotNull
    private final ToolPalette<G, A, R> toolPalette;

    @NotNull
    private final MapRenderer renderer;

    @NotNull
    private final Point tmpPoint = new Point();

    @NotNull
    private final MouseOpEvent<G, A, R> mouseOpEvent;

    @NotNull
    private final MouseListener mouseListener = new MouseListener() {

        @Override
        public void mouseClicked(@NotNull final MouseEvent e) {
            final MouseOpListener<G, A, R> mouseOpListener = getMouseOperation(e);
            if (mouseOpListener != null) {
                mouseOpListener.clicked(mouseOpEvent);
            }
        }

        @Override
        public void mousePressed(@NotNull final MouseEvent e) {
            final MouseOpListener<G, A, R> mouseOpListener = getMouseOperation(e);
            if (mouseOpListener != null) {
                mouseOpListener.pressed(mouseOpEvent);
            }
        }

        @Override
        public void mouseReleased(@NotNull final MouseEvent e) {
            final MouseOpListener<G, A, R> mouseOpListener = getMouseOperation(e);
            if (mouseOpListener != null) {
                mouseOpListener.released(mouseOpEvent);
            }
        }

        @Override
        public void mouseEntered(@NotNull final MouseEvent e) {
            // ignore
        }

        @Override
        public void mouseExited(@NotNull final MouseEvent e) {
            // ignore
        }

    };

    @NotNull
    private final MouseMotionListener mouseMotionListener = new MouseMotionListener() {

        @Override
        public void mouseDragged(@NotNull final MouseEvent e) {
            final MouseOpListener<G, A, R> mouseOpListener = getMouseOperation(e);
            if (mouseOpListener != null) {
                mouseOpListener.dragged(mouseOpEvent);
            }
        }

        @Override
        public void mouseMoved(@NotNull final MouseEvent e) {
            final MouseOpListener<G, A, R> mouseOpListener = getMouseOperation(e);
            if (mouseOpListener != null) {
                mouseOpListener.moved(mouseOpEvent);
            }
        }

    };

    public MapMouseListener(@NotNull final MapRenderer renderer, @NotNull final ToolPalette<G, A, R> toolPalette, @NotNull final MapView<G, A, R> mapView) {
        this.toolPalette = toolPalette;
        this.renderer = renderer;
        renderer.addMouseListener(mouseListener);
        renderer.addMouseMotionListener(mouseMotionListener);
        mouseOpEvent = new MouseOpEvent<>(mapView);
    }

    public void closeNotify() {
        renderer.removeMouseListener(mouseListener);
        renderer.removeMouseMotionListener(mouseMotionListener);
    }

    private void initEvent(@NotNull final MouseEvent event) {
        mouseOpEvent.setButton(event.getButton());
        mouseOpEvent.setId(event.getID());
        mouseOpEvent.setMapLocation(getMapLocation(event));
        mouseOpEvent.setModifiers(event.getModifiersEx());
        mouseOpEvent.setClickCount(event.getClickCount());
        event.consume();
    }

    @Nullable
    private MouseOpListener<G, A, R> getMouseOperation(@NotNull final MouseEvent event) {
        initEvent(event);
        return toolPalette.getTool(mouseOpEvent);
    }

    @Nullable
    private Point getMapLocation(@NotNull final MouseEvent event) {
        return renderer.getSquareLocationAt(event.getPoint(), tmpPoint) ? tmpPoint : null;
    }

}