Connector.java

/*******************************************************************************
 * DialogueEditor
 * Copyright (C) 2013-2014 Pawel Pastuszak
 * <p>
 * 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.
 * <p>
 * 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.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package pl.kotcrab.jdialogue.editor.components;

import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;

import java.util.ArrayList;

public class Connector {
	private float x, y;

	private ArrayList<Connector> targets = new ArrayList<Connector>();
	private ArrayList<Connector> targetsToRemove = new ArrayList<Connector>();
	private boolean isInput;

	private DComponent parrentComponent;

	public Connector (DComponent parrentComponent, boolean isInput) {
		this.x = 0;
		this.y = 0;
		this.isInput = isInput;
		this.parrentComponent = parrentComponent;
	}

	public void render (ShapeRenderer shapeRenderer) {
		shapeRenderer.setColor(Color.BLACK);
		shapeRenderer.rect(x, y, 12, 12);
	}

	public void renderAsSelected (ShapeRenderer shapeRenderer, Color color) {
		shapeRenderer.begin(ShapeType.Filled);
		shapeRenderer.setColor(color);
		shapeRenderer.rect(x, y, 12, 12);
		shapeRenderer.end();
	}

	public Connector getTarget () {
		if (targets.size() > 0)
			return targets.get(0);
		else
			return null;
	}

	public void detach () {
		for (Connector target : targets) {
			Connector[] targetConnectors = null;
			try {
				if (isInput)
					targetConnectors = target.getParrentComponent().getOutputs();
				else
					targetConnectors = target.getParrentComponent().getInputs();
			} catch (NullPointerException e) // target was not set, ignore
			{
				continue;
			}

			for (int j = 0; j < targetConnectors.length; j++) // searching for matching output connector
			{
				if (targetConnectors[j] == target) // found
				{
					Connector temp = targetConnectors[j];
					targetConnectors[j].removeTarget(this); // detach
					targetsToRemove.add(temp);
					continue;
				}
			}
		}

		if (targetsToRemove.size() > 0) {
			targets.removeAll(targetsToRemove);
			targetsToRemove.clear();
		}
	}

	public void detachNotOnList (ArrayList<DComponent> componentList) {
		for (Connector target : targets) {
			Connector[] targetConnectors = null;
			try {
				if (isInput)
					targetConnectors = target.getParrentComponent().getOutputs();
				else
					targetConnectors = target.getParrentComponent().getInputs();
			} catch (NullPointerException e) // target was not set, ignore
			{
				continue;
			}

			for (int j = 0; j < targetConnectors.length; j++) // searching for matching output connector
			{
				if (componentList.contains(targetConnectors[j].getParrentComponent()) && componentList.contains(this.getParrentComponent()))
					continue;

				if (targetConnectors[j] == target) // found
				{
					Connector temp = targetConnectors[j];
					targetConnectors[j].removeTarget(this); // detach
					targetsToRemove.add(temp);
					continue;
				}
			}
		}

		if (targetsToRemove.size() > 0) {
			targets.removeAll(targetsToRemove);
			targetsToRemove.clear();
		}
	}

	public void addTarget (Connector target) {
		targets.add(target);
	}

	public void removeTarget (Connector target) {
		targets.remove(target);
	}

	public float getX () {
		return x;
	}

	public void setX (float x) {
		this.x = x;
	}

	public float getY () {
		return y;
	}

	public void setY (float y) {
		this.y = y;
	}

	public void setPosition (float x, float y) {
		this.x = x;
		this.y = y;
	}

	public DComponent getParrentComponent () {
		return parrentComponent;
	}

	public boolean isInput () {
		return isInput;
	}

	public boolean contains (float x, float y) // is given point inside component
	{
		return this.x <= x && this.x + 12 >= x && this.y <= y && this.y + 12 >= y;
	}
}