bundles/common/org.eclipse.apogy.common.topology.ui.jme3/src/org/eclipse/apogy/common/topology/ui/jme3/internal/MouseClickListener.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Pierre Allard - initial API and implementation
 *     Regent L'Archeveque,
 *     Sebastien Gemme
 * 
 * SPDX-License-Identifier: EPL-1.0
 *******************************************************************************/
package org.eclipse.apogy.common.topology.ui.jme3.internal;

import org.eclipse.apogy.common.topology.ui.jme3.JME3Application;

import com.jme3.input.InputManager;
import com.jme3.input.MouseInput;
import com.jme3.input.controls.ActionListener;
import com.jme3.input.controls.MouseButtonTrigger;
import com.jme3.renderer.Camera;

public abstract class MouseClickListener implements ActionListener {
	public static final String LEFT_MOUSE_CLICK_EVENT = "LeftMouseButtonClickEvent";
	public static final String MIDDLE_MOUSE_CLICK_EVENT = "MiddleMouseButtonClickEvent";
	public static final String RIGHT_MOUSE_CLICK_EVENT = "RightMouseButtonClickEvent";

//	private Camera camera = null;
//	private JME3Application jme3Application;
	private final InputManager inputManager;

	private boolean mouseInputRegistered = false;

	private boolean enabled = false;

	public MouseClickListener(Camera camera, JME3Application jme3Application, InputManager inputManager) {
//		this.camera = camera;
//		this.jme3Application = jme3Application;
		this.inputManager = inputManager;
	}

	public void setEnabled(boolean enable) {
		if (enable) {
			if (!this.mouseInputRegistered) {
				registerMouseInput();
			}
		} else {
			if (this.mouseInputRegistered) {
				unregisterMouseInput();
			}
		}
		this.enabled = enable;
	}

	public boolean isEnabled() {
		return this.enabled;
	}

	@Override
	public void onAction(String name, boolean keyPressed, float tpf) {
		if (name.equals(LEFT_MOUSE_CLICK_EVENT) && keyPressed) {
			mouseClicked(MouseInput.BUTTON_LEFT);
		}

		if (name.equals(MIDDLE_MOUSE_CLICK_EVENT) && keyPressed) {
			mouseClicked(MouseInput.BUTTON_MIDDLE);
		}

		if (name.equals(RIGHT_MOUSE_CLICK_EVENT) && keyPressed) {
			mouseClicked(MouseInput.BUTTON_RIGHT);
		}
	}

	protected abstract void mouseClicked(int mouseButton);

	private void registerMouseInput() {
		if (!this.inputManager.hasMapping(LEFT_MOUSE_CLICK_EVENT)) {
			this.inputManager.addMapping(LEFT_MOUSE_CLICK_EVENT, new MouseButtonTrigger(MouseInput.BUTTON_LEFT));
			this.inputManager.addListener(this, new String[] { LEFT_MOUSE_CLICK_EVENT });
		}

		if (!this.inputManager.hasMapping(MIDDLE_MOUSE_CLICK_EVENT)) {
			this.inputManager.addMapping(MIDDLE_MOUSE_CLICK_EVENT, new MouseButtonTrigger(MouseInput.BUTTON_MIDDLE));
			this.inputManager.addListener(this, new String[] { MIDDLE_MOUSE_CLICK_EVENT });
		}

		if (!this.inputManager.hasMapping(RIGHT_MOUSE_CLICK_EVENT)) {
			this.inputManager.addMapping(RIGHT_MOUSE_CLICK_EVENT, new MouseButtonTrigger(MouseInput.BUTTON_RIGHT));
			this.inputManager.addListener(this, new String[] { RIGHT_MOUSE_CLICK_EVENT });
		}

		this.mouseInputRegistered = true;
	}

	private void unregisterMouseInput() {
		if (this.inputManager.hasMapping(LEFT_MOUSE_CLICK_EVENT)) {
			this.inputManager.deleteMapping(LEFT_MOUSE_CLICK_EVENT);
		}

		if (this.inputManager.hasMapping(MIDDLE_MOUSE_CLICK_EVENT)) {
			this.inputManager.deleteMapping(MIDDLE_MOUSE_CLICK_EVENT);
		}

		if (this.inputManager.hasMapping(RIGHT_MOUSE_CLICK_EVENT)) {
			this.inputManager.deleteMapping(RIGHT_MOUSE_CLICK_EVENT);
		}

		this.mouseInputRegistered = false;
	}
}