001/*
002 * JGrapes Event Driven Framework
003 * Copyright (C) 2017-2018 Michael N. Lipp
004 * 
005 * This program is free software; you can redistribute it and/or modify it 
006 * under the terms of the GNU Affero General Public License as published by 
007 * the Free Software Foundation; either version 3 of the License, or 
008 * (at your option) any later version.
009 * 
010 * This program is distributed in the hope that it will be useful, but 
011 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
012 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License 
013 * for more details.
014 * 
015 * You should have received a copy of the GNU Affero General Public License along 
016 * with this program; if not, see <http://www.gnu.org/licenses/>.
017 */
018
019package org.jgrapes.webconsole.base.events;
020
021import java.io.IOException;
022import java.io.Writer;
023import java.util.HashMap;
024import java.util.Map;
025
026/**
027 * Causes a notification to be display on the top of the web console page.
028 * 
029 * The event triggers the creation of a notification widget in the
030 * web console page. 
031 */
032public class DisplayNotification extends ConsoleCommand {
033
034    private String content;
035    private Map<String, Object> options;
036
037    /**
038     * Creates a new event. The content must be valid HTML, i.e. it
039     * must start with a tag (usually a "`<span>`"). See the console's
040     * <a href="../jsdoc/classes/Console.html#notification">
041     * notification</a> method and the JavaScript documentation of the
042     * <a href="../jsdoc/interfaces/NotificationOptions.html">
043     * notification options</a> for details.
044     * 
045     * @param content the content (valid HTML)
046     * @param options the options (must be serializable as JSON)
047     */
048    public DisplayNotification(String content, Map<String, Object> options) {
049        this.content = content;
050        this.options = options;
051    }
052
053    /**
054     * Creates a new event without any options.
055     * The content must be valid HTML, i.e. it
056     * must start with a tag (usually a "`<span>`").
057     * 
058     * @param content the content (valid HTML)
059     */
060    public DisplayNotification(String content) {
061        this(content, new HashMap<>());
062    }
063
064    /**
065     * Adds an option to the event.
066     * 
067     * @param name the option name
068     * @param value the option value (must be serializable as JSON)
069     * @return the event for easy chaining
070     */
071    public DisplayNotification addOption(String name, Object value) {
072        options.put(name, value);
073        return this;
074    }
075
076    /**
077     * Returns the content.
078     * 
079     * @return the content
080     */
081    public String content() {
082        return content;
083    }
084
085    /**
086     * Return the options.
087     * 
088     * @return the options
089     */
090    public Map<String, Object> options() {
091        return options;
092    }
093
094    @Override
095    public void emitJson(Writer writer) throws IOException {
096        options.put("destroyOnClose", true);
097        emitJson(writer, "displayNotification", content(), options);
098    }
099
100}