001/*
002 * SonarQube
003 * Copyright (C) 2009-2017 SonarSource SA
004 * mailto:info AT sonarsource DOT com
005 *
006 * This program is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * This program is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public License
017 * along with this program; if not, write to the Free Software Foundation,
018 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019 */
020package org.sonar.api.web.page;
021
022import java.util.Collection;
023import java.util.HashMap;
024import java.util.Map;
025
026import static java.lang.String.format;
027import static java.util.Collections.unmodifiableCollection;
028
029/**
030 * @see PageDefinition
031 * @since 6.3
032 */
033public final class Context {
034  private final Map<String, Page> pagesByPath = new HashMap<>();
035
036  public Context addPage(Page page) {
037    Page existingPageWithSameKey = pagesByPath.putIfAbsent(page.getKey(), page);
038    if (existingPageWithSameKey != null) {
039      throw new IllegalArgumentException(format("Page '%s' cannot be loaded. Another page with key '%s' already exists.", page.getName(), page.getKey()));
040    }
041
042    return this;
043  }
044
045  public Collection<Page> getPages() {
046    return unmodifiableCollection(pagesByPath.values());
047  }
048}