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/*
 * Interacto
 * Copyright (C) 2020 Arnaud Blouin
 * 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 3 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, see .
 */
package io.github.interacto.jfx.interaction.library;

import io.github.interacto.jfx.interaction.JfxInteraction;
import java.util.Optional;
import javafx.beans.property.ReadOnlyObjectProperty;
import javafx.geometry.Point3D;
import javafx.scene.Node;
import javafx.scene.input.MouseButton;
import javafx.scene.input.MouseEvent;

/**
 * The drag-lock user interaction
 */
public class DragLock extends JfxInteraction {
	private final DragLockFSM.DragLockFSMHandler handler;
	protected final DoubleClick firstClick;
	protected final DoubleClick sndClick;

	/**
	 * Creates a drag lock.
	 */
	public DragLock() {
		super(new DragLockFSM());

		handler = new DragLockFSM.DragLockFSMHandler() {
			@Override
			public void onMove(final MouseEvent evt) {
				((PointDataImpl) sndClick.firstClick.getData()).setPointData(evt.getX(), evt.getY(), evt.getZ(), evt.getSceneX(),
					evt.getSceneY(), evt.getButton(), evt.getPickResult().getIntersectedNode());
				((PointDataImpl) sndClick.firstClick.getData()).setModifiersData(evt);
			}

			@Override
			public void reinitData() {
				DragLock.this.reinitData();
			}
		};

		firstClick = new DoubleClick(fsm.firstDbleClick);
		sndClick = new DoubleClick(fsm.sndDbleClick);
		fsm.buildFSM(handler);
	}

	@Override
	protected SrcTgtPointsData createDataObject() {
		return new DragLockData();
	}

	@Override
	public void reinitData() {
		super.reinitData();
		firstClick.reinitData();
		sndClick.reinitData();
	}

	class DragLockData implements SrcTgtPointsData {
		@Override
		public Optional getTgtObject() {
			return sndClick.getData().getSrcObject().isEmpty() ? getSrcObject() : sndClick.getData().getSrcObject();
		}

		@Override
		public ReadOnlyObjectProperty tgtLocalPointProperty() {
			return sndClick.getData().srcLocalPointProperty();
		}

		@Override
		public ReadOnlyObjectProperty tgtScenePointProperty() {
			return sndClick.getData().srcScenePointProperty();
		}

		@Override
		public ReadOnlyObjectProperty tgtObjectProperty() {
			return sndClick.getData().srcObjectProperty();
		}

		@Override
		public Point3D getTgtLocalPoint() {
			return sndClick.getData().getSrcLocalPoint() == null ? getSrcLocalPoint() : sndClick.getData().getSrcLocalPoint();
		}

		@Override
		public Point3D getTgtScenePoint() {
			return sndClick.getData().getSrcScenePoint() == null ? getSrcScenePoint() : sndClick.getData().getSrcScenePoint();
		}

		@Override
		public ReadOnlyObjectProperty srcLocalPointProperty() {
			return firstClick.getData().srcLocalPointProperty();
		}

		@Override
		public ReadOnlyObjectProperty srcScenePointProperty() {
			return firstClick.getData().srcScenePointProperty();
		}

		@Override
		public ReadOnlyObjectProperty srcObjectProperty() {
			return firstClick.getData().srcObjectProperty();
		}

		@Override
		public boolean isAltDown() {
			return firstClick.getData().isAltDown();
		}

		@Override
		public boolean isCtrlDown() {
			return firstClick.getData().isCtrlDown();
		}

		@Override
		public boolean isShiftDown() {
			return firstClick.getData().isShiftDown();
		}

		@Override
		public boolean isMetaDown() {
			return firstClick.getData().isMetaDown();
		}

		@Override
		public boolean isShortcutDown() {
			return firstClick.getData().isShortcutDown();
		}

		@Override
		public MouseButton getButton() {
			return firstClick.getData().getButton();
		}

		@Override
		public void flush() {
			firstClick.getData().flush();
			sndClick.getData().flush();
		}
	}
}