Dave Jarvis' Repositories

/*
 * Copyright (c) 2015 Karl Tauber <karl at jformdesigner dot com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  o Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 *  o Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.scrivenvar.controls;

import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.scene.control.TextField;
import javafx.util.StringConverter;
import com.scrivenvar.util.Utils;

/**
 * TextField that can escape/unescape characters for markdown.
 *
 * @author Karl Tauber
 */
public class EscapeTextField
	extends TextField
{
	public EscapeTextField() {
		escapedText.bindBidirectional(textProperty(), new StringConverter<String>() {
			@Override public String toString(String object) { return escape(object); }
			@Override public String fromString(String string) { return unescape(string); }
		});
		escapeCharacters.addListener(e -> escapedText.set(escape(textProperty().get())));
	}

	// 'escapedText' property
	private final StringProperty escapedText = new SimpleStringProperty();
	public String getEscapedText() { return escapedText.get(); }
	public void setEscapedText(String escapedText) { this.escapedText.set(escapedText); }
	public StringProperty escapedTextProperty() { return escapedText; }

	// 'escapeCharacters' property
	private final StringProperty escapeCharacters = new SimpleStringProperty();
	public String getEscapeCharacters() { return escapeCharacters.get(); }
	public void setEscapeCharacters(String escapeCharacters) { this.escapeCharacters.set(escapeCharacters); }
	public StringProperty escapeCharactersProperty() { return escapeCharacters; }

	private String escape(String s) {
		String escapeChars = getEscapeCharacters();
		return !Utils.isNullOrEmpty(escapeChars)
				? s.replaceAll("([" + escapeChars.replaceAll("(.)", "\\\\$1") + "])", "\\\\$1")
				: s;
	}

	private String unescape(String s) {
		String escapeChars = getEscapeCharacters();
		return !Utils.isNullOrEmpty(escapeChars)
				? s.replaceAll("\\\\([" + escapeChars.replaceAll("(.)", "\\\\$1") + "])", "$1")
				: s;
	}
}