001: /*
002: * Copyright (c) 2003 The Visigoth Software Society. All rights
003: * reserved.
004: *
005: * Redistribution and use in source and binary forms, with or without
006: * modification, are permitted provided that the following conditions
007: * are met:
008: *
009: * 1. Redistributions of source code must retain the above copyright
010: * notice, this list of conditions and the following disclaimer.
011: *
012: * 2. Redistributions in binary form must reproduce the above copyright
013: * notice, this list of conditions and the following disclaimer in
014: * the documentation and/or other materials provided with the
015: * distribution.
016: *
017: * 3. The end-user documentation included with the redistribution, if
018: * any, must include the following acknowledgement:
019: * "This product includes software developed by the
020: * Visigoth Software Society (http://www.visigoths.org/)."
021: * Alternately, this acknowledgement may appear in the software itself,
022: * if and wherever such third-party acknowledgements normally appear.
023: *
024: * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
025: * project contributors may be used to endorse or promote products derived
026: * from this software without prior written permission. For written
027: * permission, please contact visigoths@visigoths.org.
028: *
029: * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
030: * nor may "FreeMarker" or "Visigoth" appear in their names
031: * without prior written permission of the Visigoth Software Society.
032: *
033: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
034: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
035: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
036: * DISCLAIMED. IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR
037: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
038: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
039: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
040: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
041: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
042: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
043: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
044: * SUCH DAMAGE.
045: * ====================================================================
046: *
047: * This software consists of voluntary contributions made by many
048: * individuals on behalf of the Visigoth Software Society. For more
049: * information on the Visigoth Software Society, please see
050: * http://www.visigoths.org/
051: */
052:
053: package freemarker.core;
054:
055: import java.util.*;
056: import java.io.IOException;
057: import freemarker.template.TemplateException;
058:
059: /**
060: * Encapsulates an array of <tt>TemplateElement</tt> objects.
061: */
062: final class MixedContent extends TemplateElement {
063:
064: MixedContent() {
065: nestedElements = new ArrayList();
066: }
067:
068: void addElement(TemplateElement element) {
069: nestedElements.add(element);
070: }
071:
072: TemplateElement postParseCleanup(boolean stripWhitespace)
073: throws ParseException {
074: super .postParseCleanup(stripWhitespace);
075: if (nestedElements.size() == 1) {
076: return (TemplateElement) nestedElements.get(0);
077: }
078: return this ;
079: }
080:
081: /**
082: * Processes the contents of the internal <tt>TemplateElement</tt> list,
083: * and outputs the resulting text.
084: */
085: void accept(Environment env) throws TemplateException, IOException {
086: for (int i = 0; i < nestedElements.size(); i++) {
087: TemplateElement element = (TemplateElement) nestedElements
088: .get(i);
089: env.visit(element);
090: }
091: }
092:
093: public String getCanonicalForm() {
094: StringBuffer buf = new StringBuffer();
095: for (int i = 0; i < nestedElements.size(); i++) {
096: TemplateElement element = (TemplateElement) nestedElements
097: .get(i);
098: buf.append(element.getCanonicalForm());
099: }
100: return buf.toString();
101: }
102:
103: public String getDescription() {
104: if (parent == null) {
105: return "root element";
106: }
107: return "content"; // MixedContent is uninteresting in a stack trace.
108: }
109:
110: boolean isIgnorable() {
111: return nestedElements == null || nestedElements.size() == 0;
112: }
113: }
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