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/**
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* Back 2 Browser Bytecode Translator
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* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://opensource.org/licenses/GPL-2.0.
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*/
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package org.apidesign.bck2brwsr.demo.twitter;
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import java.util.Arrays;
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import java.util.List;
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import org.apidesign.bck2brwsr.htmlpage.api.*;
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import org.apidesign.bck2brwsr.htmlpage.api.Page;
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import org.apidesign.bck2brwsr.htmlpage.api.Property;
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import org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty;
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/** Controller class for access to Twitter.
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*
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* @author Jaroslav Tulach
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*/
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@Page(xhtml="index.html", className="TwitterModel", properties={
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@Property(name="savedLists", type=TwitterClient.Twttrs.class, array = true),
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@Property(name="activeTweetersName", type=String.class),
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@Property(name="activeTweeters", type=String.class, array = true),
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@Property(name="userNameToAdd", type=String.class),
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@Property(name="currentTweets", type=TwitterClient.Twt.class, array = true)
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})
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public class TwitterClient {
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@Model(className = "Tweeters", properties = {
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@Property(name="name", type = String.class),
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@Property(name="userNames", type = String.class, array = true)
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})
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static class Twttrs {
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}
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@Model(className = "Tweet", properties = {
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@Property(name = "from_user", type = String.class),
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@Property(name = "from_user_id", type = int.class),
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@Property(name = "profile_image_url", type = String.class),
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@Property(name = "text", type = String.class),
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@Property(name = "created_at", type = String.class),
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})
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static final class Twt {
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@ComputedProperty static String html(String text) {
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StringBuilder sb = new StringBuilder(320);
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for (int pos = 0;;) {
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int http = text.indexOf("http", pos);
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if (http == -1) {
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sb.append(text.substring(pos));
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return sb.toString();
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}
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int spc = text.indexOf(' ', http);
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if (spc == -1) {
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spc = text.length();
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}
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sb.append(text.substring(pos, http));
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String url = text.substring(http, spc);
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sb.append("<a href='").append(url).append("'>").append(url).append("</a>");
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pos = spc;
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}
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}
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@ComputedProperty static String userUrl(String from_user) {
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return "http://twitter.com/" + from_user;
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}
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}
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@Model(className = "TwitterQuery", properties = {
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@Property(array = true, name = "results", type = Twt.class)
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})
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public static final class TwttrQr {
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}
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@OnReceive(url="{root}/search.json?{query}&callback={me}", jsonp="me")
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static void queryTweets(TwitterModel page, TwitterQuery q) {
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page.getCurrentTweets().clear();
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page.getCurrentTweets().addAll(q.getResults());
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}
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@OnPropertyChange("activeTweetersName")
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static void changeTweetersList(TwitterModel model) {
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Tweeters people = findByName(model.getSavedLists(), model.getActiveTweetersName());
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model.getActiveTweeters().clear();
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model.getActiveTweeters().addAll(people.getUserNames());
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}
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@OnPropertyChange({ "activeTweeters", "activeTweetersCount" })
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static void refreshTweets(TwitterModel model) {
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StringBuilder sb = new StringBuilder();
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sb.append("rpp=25&q=");
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String sep = "";
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for (String p : model.getActiveTweeters()) {
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sb.append(sep);
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sb.append("from:");
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sb.append(p);
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sep = " OR ";
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}
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model.queryTweets("http://search.twitter.com", sb.toString());
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}
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static {
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final TwitterModel model = new TwitterModel();
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final List<Tweeters> svdLst = model.getSavedLists();
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svdLst.add(newTweeters("API Design", "JaroslavTulach"));
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svdLst.add(newTweeters("Celebrities", "JohnCleese", "MCHammer", "StephenFry", "algore", "StevenSanderson"));
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svdLst.add(newTweeters("Microsoft people", "BillGates", "shanselman", "ScottGu"));
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svdLst.add(newTweeters("NetBeans", "GeertjanW","monacotoni", "NetBeans", "petrjiricka"));
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svdLst.add(newTweeters("Tech pundits", "Scobleizer", "LeoLaporte", "techcrunch", "BoingBoing", "timoreilly", "codinghorror"));
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model.setActiveTweetersName("NetBeans");
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model.applyBindings();
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}
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@ComputedProperty
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static boolean hasUnsavedChanges(List<String> activeTweeters, List<Tweeters> savedLists, String activeTweetersName) {
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Tweeters tw = findByName(savedLists, activeTweetersName);
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if (activeTweeters == null) {
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return false;
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}
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return !tw.getUserNames().equals(activeTweeters);
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}
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@ComputedProperty
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static int activeTweetersCount(List<String> activeTweeters) {
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return activeTweeters.size();
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}
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@ComputedProperty
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static boolean userNameToAddIsValid(
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String userNameToAdd, String activeTweetersName, List<Tweeters> savedLists, List<String> activeTweeters
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) {
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return userNameToAdd != null &&
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userNameToAdd.matches("[a-zA-Z0-9_]{1,15}") &&
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!activeTweeters.contains(userNameToAdd);
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}
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@OnFunction
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static void deleteList(TwitterModel model) {
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final List<Tweeters> sl = model.getSavedLists();
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sl.remove(findByName(sl, model.getActiveTweetersName()));
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if (sl.isEmpty()) {
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final Tweeters t = new Tweeters();
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t.setName("New");
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sl.add(t);
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}
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model.setActiveTweetersName(sl.get(0).getName());
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}
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@OnFunction
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static void saveChanges(TwitterModel model) {
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Tweeters t = findByName(model.getSavedLists(), model.getActiveTweetersName());
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int indx = model.getSavedLists().indexOf(t);
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if (indx != -1) {
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t.setName(model.getActiveTweetersName());
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t.getUserNames().clear();
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t.getUserNames().addAll(model.getActiveTweeters());
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}
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}
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@OnFunction
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static void addUser(TwitterModel model) {
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String n = model.getUserNameToAdd();
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model.getActiveTweeters().add(n);
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}
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@OnFunction
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static void removeUser(String data, TwitterModel model) {
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model.getActiveTweeters().remove(data);
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}
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private static Tweeters findByName(List<Tweeters> list, String name) {
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for (Tweeters l : list) {
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if (l.getName() != null && l.getName().equals(name)) {
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return l;
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}
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}
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return list.isEmpty() ? new Tweeters() : list.get(0);
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}
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private static Tweeters newTweeters(String listName, String... userNames) {
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Tweeters t = new Tweeters();
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t.setName(listName);
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t.getUserNames().addAll(Arrays.asList(userNames));
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return t;
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}
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}
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