org.lucidj.search.SearchView.java Source code

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Here is the source code for org.lucidj.search.SearchView.java

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/*
 * Copyright 2016 NEOautus Ltd. (http://neoautus.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.lucidj.search;

import org.bouncycastle.crypto.digests.SHA3Digest;
import org.bouncycastle.crypto.prng.DigestRandomGenerator;
import org.commonmark.Extension;
import org.commonmark.ext.gfm.tables.TablesExtension;
import org.commonmark.html.HtmlRenderer;
import org.commonmark.node.Node;
import org.commonmark.parser.Parser;
import org.lucidj.api.core.ManagedObject;
import org.lucidj.api.core.ManagedObjectInstance;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewChangeListener;
import com.vaadin.server.ExternalResource;
import com.vaadin.shared.ui.label.ContentMode;
import com.vaadin.ui.Image;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;

import java.util.Arrays;
import java.util.List;

// TODO: HANDLE SUBSCRIBER
import org.apache.felix.ipojo.handlers.event.Subscriber;

public class SearchView extends VerticalLayout implements ManagedObject, View {
    private final static Logger log = LoggerFactory.getLogger(SearchView.class);
    private SearchView self = this;

    private Parser parser;
    private HtmlRenderer renderer;
    private final DigestRandomGenerator generator = new DigestRandomGenerator(new SHA3Digest(512));

    public SearchView() {
        List<Extension> extensions = Arrays.asList(TablesExtension.create());

        parser = Parser.builder().extensions(extensions).build();
        renderer = HtmlRenderer.builder().extensions(extensions).build();

        // Delay UI building
        log.info("Search is visible now");
    }

    private void buildView() {
        setMargin(true);
        Node document = parser.parse("## This is *Markdown*!");
        addComponent(new Label(renderer.render(document), ContentMode.HTML));
        addComponent(new Image(null, new ExternalResource("vaadin://~/search/cool-image.jpg")));
        addComponent(new Label("DigestRandomGenerator: " + generator.toString()));
        addComponent(new Label("No results to show."));
    }

    // TODO: MOVE TO IPOJO COMPONENT OR API
    @Subscriber(name = "searchbox", topics = "search", dataKey = "args", dataType = "java.lang.String")
    private void receive(final String search_event) {
        getUI().access(new Runnable() {
            @Override
            public void run() {
                log.info("SEARCH EVENT: {}", search_event);
                self.addComponent(new Label(search_event));
            }
        });
    }

    @Override
    public void enter(ViewChangeListener.ViewChangeEvent event) {
        // TODO Auto-generated method stub
        if (getComponentCount() == 0) {
            buildView();
        }
    }

    @Override
    public void validate(ManagedObjectInstance instance) {
        log.info("validate");
    }

    @Override
    public void invalidate(ManagedObjectInstance instance) {
        log.info("invalidate");
    }
}

// EOF