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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 javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Node;
import javafx.scene.control.TextInputControl;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;

/**
 * A user interaction for text input controls.
 * @author Arnaud BLOUIN
 */
public class TextInputChanged extends JfxInteraction, TextInputChangedFSM> {
	private static final EventHandler HANDLER_KEY_ACTION = evt -> {
		final KeyCode code = evt.getCode();
		if(!code.isFunctionKey() && !code.isMediaKey() && !code.isModifierKey() && !code.isArrowKey() && !code.isNavigationKey() && evt.getSource() instanceof
			Node) {
			((Node) evt.getSource()).fireEvent(new ActionEvent(evt.getSource(), null));
		}
	};

	private final TextInputChangedFSM.TextInputChangedFSMHandler handler;

	/**
	 * Creates the interaction.
	 */
	public TextInputChanged() {
		super(new TextInputChangedFSM());

		handler = new TextInputChangedFSM.TextInputChangedFSMHandler() {
			@Override
			public void initToChangedHandler(final ActionEvent event) {
				if(event.getSource() instanceof TextInputControl) {
					((WidgetDataImpl) data).setWidget((TextInputControl) event.getSource());
				}
			}

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

		fsm.buildFSM(handler);
	}

	@Override
	protected void onNewNodeRegistered(final Node node) {
		if(node instanceof TextInputControl) {
			registerActionHandler(node);
			node.removeEventHandler(KeyEvent.KEY_PRESSED, HANDLER_KEY_ACTION);
			node.addEventHandler(KeyEvent.KEY_PRESSED, HANDLER_KEY_ACTION);
		}
	}

	@Override
	protected WidgetDataImpl createDataObject() {
		return new WidgetDataImpl<>();
	}

	@Override
	protected void onNodeUnregistered(final Node node) {
		if(node instanceof TextInputControl) {
			unregisterActionHandler(node);
			node.removeEventHandler(KeyEvent.KEY_PRESSED, HANDLER_KEY_ACTION);
		}
	}
}