| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2002 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "The Jakarta Project", "Ant", and "Apache Software |
| * Foundation" must not be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| package org.apache.tools.ant.types.selectors; |
| |
| import java.io.File; |
| import java.util.Enumeration; |
| |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.types.Reference; |
| |
| /** |
| * This selector just holds one other selector and forwards all |
| * requests to it. It exists so that there is a single selector |
| * type that can exist outside of any targets, as an element of |
| * project. It overrides all of the reference stuff so that it |
| * works as expected. Note that this is the only selector you |
| * can reference. |
| * |
| * @author <a href="mailto:bruce@callenish.com">Bruce Atherton</a> |
| * @since 1.5 |
| */ |
| public class SelectSelector extends AndSelector { |
| |
| /** |
| * Default constructor. |
| */ |
| public SelectSelector() { |
| } |
| |
| public String toString() { |
| StringBuffer buf = new StringBuffer(); |
| if (hasSelectors()) { |
| buf.append("{select: "); |
| buf.append(super.toString()); |
| buf.append("}"); |
| } |
| return buf.toString(); |
| } |
| |
| /** |
| * Performs the check for circular references and returns the |
| * referenced Selector. |
| */ |
| private SelectSelector getRef() { |
| Object o = getCheckedRef(this.getClass(), "SelectSelector"); |
| return (SelectSelector) o; |
| } |
| |
| /** |
| * Indicates whether there are any selectors here. |
| */ |
| public boolean hasSelectors() { |
| if (isReference()) { |
| return getRef().hasSelectors(); |
| } |
| return super.hasSelectors(); |
| } |
| |
| /** |
| * Gives the count of the number of selectors in this container |
| */ |
| public int selectorCount() { |
| if (isReference()) { |
| return getRef().selectorCount(); |
| } |
| return super.selectorCount(); |
| } |
| |
| /** |
| * Returns the set of selectors as an array. |
| */ |
| public FileSelector[] getSelectors(Project p) { |
| if (isReference()) { |
| return getRef().getSelectors(p); |
| } |
| return super.getSelectors(p); |
| } |
| |
| /** |
| * Returns an enumerator for accessing the set of selectors. |
| */ |
| public Enumeration selectorElements() { |
| if (isReference()) { |
| return getRef().selectorElements(); |
| } |
| return super.selectorElements(); |
| } |
| |
| /** |
| * Add a new selector into this container. |
| * |
| * @param selector the new selector to add |
| * @return the selector that was added |
| */ |
| public void appendSelector(FileSelector selector) { |
| if (isReference()) { |
| throw noChildrenAllowed(); |
| } |
| super.appendSelector(selector); |
| } |
| |
| |
| |
| /** |
| * Makes sure that there is only one entry, sets an error message if |
| * not. |
| */ |
| public void verifySettings() { |
| if (selectorCount() != 1) { |
| setError("One and only one selector is allowed within the " + |
| "<select> tag"); |
| } |
| } |
| |
| } |
| |