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}