001 package org.codehaus.groovy.sandbox.markup;
002 /*
003
004 Copyright 2004 (C) John Wilson. All Rights Reserved.
005
006 Redistribution and use of this software and associated documentation
007 ("Software"), with or without modification, are permitted provided
008 that the following conditions are met:
009
010 1. Redistributions of source code must retain copyright
011 statements and notices. Redistributions must also contain a
012 copy of this document.
013
014 2. Redistributions in binary form must reproduce the
015 above copyright notice, this list of conditions and the
016 following disclaimer in the documentation and/or other
017 materials provided with the distribution.
018
019 3. The name "groovy" must not be used to endorse or promote
020 products derived from this Software without prior written
021 permission of The Codehaus. For written permission,
022 please contact info@codehaus.org.
023
024 4. Products derived from this Software may not be called "groovy"
025 nor may "groovy" appear in their names without prior written
026 permission of The Codehaus. "groovy" is a registered
027 trademark of The Codehaus.
028
029 5. Due credit should be given to The Codehaus -
030 http://groovy.codehaus.org/
031
032 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
036 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043 OF THE POSSIBILITY OF SUCH DAMAGE.
044
045 */
046
047 import groovy.lang.Closure;
048
049 import java.util.Collections;
050 import java.util.HashMap;
051 import java.util.Map;
052
053 public class BaseMarkupBuilder extends Builder {
054 public BaseMarkupBuilder(final Map namespaceMethodMap) {
055 super(namespaceMethodMap);
056 }
057
058 public Object bind(final Closure root) {
059 return new Document(root, this.namespaceMethodMap);
060 }
061
062 private static class Document extends Built {
063 private Object out;
064 private final Map pendingNamespaces = new HashMap();
065 private final Map namespaces = new HashMap();
066 private String prefix = "";
067
068 public Document(final Closure root, final Map namespaceMethodMap) {
069 super(root, namespaceMethodMap);
070
071 this.namespaces.put("xml", "http://www.w3.org/XML/1998/namespace"); // built in namespace
072 this.namespaces.put("mkp", "http://www.codehaus.org/Groovy/markup/keywords"); // pseudo namespace for markup keywords
073 }
074
075 /* (non-Javadoc)
076 * @see groovy.lang.GroovyObject#invokeMethod(java.lang.String, java.lang.Object)
077 */
078 public Object invokeMethod(final String name, final Object args) {
079 final Object[] arguments = (Object[]) args;
080 Map attrs = Collections.EMPTY_MAP;
081 Object body = null;
082
083
084 //
085 // Sort the parameters out
086 //
087 for (int i = 0; i != arguments.length; i++) {
088 final Object arg = arguments[i];
089
090 if (arg instanceof Map) {
091 attrs = (Map)arg;
092 } else if (arg instanceof Closure) {
093 final Closure c = ((Closure) arg);
094
095 c.setDelegate(this);
096 body = c.asWritable();
097 } else {
098 body = arg;
099 }
100 }
101
102 //
103 // call the closure corresponding to the tag
104 //
105 final Object uri;
106
107 if (this.pendingNamespaces.containsKey(this.prefix)) {
108 uri = this.pendingNamespaces.get(this.prefix);
109 } else if (this.namespaces.containsKey(this.prefix)) {
110 uri = this.namespaces.get(this.prefix);
111 } else {
112 uri = ":";
113 }
114
115 final Object[] info = (Object[])this.namespaceSpecificTags.get(uri);
116 final Map tagMap = (Map)info[2];
117 final Closure defaultTagClosure = (Closure)info[0];
118
119 final String prefix = this.prefix;
120 this.prefix = "";
121
122 if (tagMap.containsKey(name)) {
123 return ((Closure)tagMap.get(name)).call(new Object[]{this, this.pendingNamespaces, this.namespaces, this.namespaceSpecificTags, prefix, attrs, body, this.out});
124 } else {
125 return defaultTagClosure.call(new Object[]{name, this, this.pendingNamespaces, this.namespaces, this.namespaceSpecificTags, prefix, attrs, body, this.out});
126 }
127 }
128
129 /* (non-Javadoc)
130 * @see groovy.lang.GroovyObject#getProperty(java.lang.String)
131 */
132 public Object getProperty(final String property) {
133 this.prefix = property;
134 return this;
135 }
136
137 /* (non-Javadoc)
138 * @see groovy.lang.GroovyObject#setProperty(java.lang.String, java.lang.Object)
139 */
140 public void setProperty(String property, Object newValue) {
141 if ("trigger".equals(property)) {
142 this.out = newValue;
143 this.root.call();
144 } else {
145 super.setProperty(property, newValue);
146 }
147 }
148 }
149 }