1package eu.siacs.conversations.xml;
2
3import android.util.Log;
4
5import java.util.ArrayList;
6import java.util.Hashtable;
7import java.util.List;
8
9import eu.siacs.conversations.Config;
10import eu.siacs.conversations.utils.XmlHelper;
11import eu.siacs.conversations.xmpp.jid.InvalidJidException;
12import eu.siacs.conversations.xmpp.jid.Jid;
13
14public class Element {
15 private final String name;
16 private Hashtable<String, String> attributes = new Hashtable<>();
17 private String content;
18 protected List<Element> children = new ArrayList<>();
19
20 public Element(String name) {
21 this.name = name;
22 }
23
24 public Element(String name, String xmlns) {
25 this.name = name;
26 this.setAttribute("xmlns", xmlns);
27 }
28
29 public Element addChild(Element child) {
30 this.content = null;
31 children.add(child);
32 return child;
33 }
34
35 public Element addChild(String name) {
36 this.content = null;
37 Element child = new Element(name);
38 children.add(child);
39 return child;
40 }
41
42 public Element addChild(String name, String xmlns) {
43 this.content = null;
44 Element child = new Element(name);
45 child.setAttribute("xmlns", xmlns);
46 children.add(child);
47 return child;
48 }
49
50 public Element setContent(String content) {
51 this.content = content;
52 this.children.clear();
53 return this;
54 }
55
56 public Element findChild(String name) {
57 for (Element child : this.children) {
58 if (child.getName().equals(name)) {
59 return child;
60 }
61 }
62 return null;
63 }
64
65 public String findChildContent(String name) {
66 Element element = findChild(name);
67 return element == null ? null : element.getContent();
68 }
69
70 public Element findChild(String name, String xmlns) {
71 for (Element child : this.children) {
72 if (name.equals(child.getName()) && xmlns.equals(child.getAttribute("xmlns"))) {
73 return child;
74 }
75 }
76 return null;
77 }
78
79 public String findChildContent(String name, String xmlns) {
80 Element element = findChild(name,xmlns);
81 return element == null ? null : element.getContent();
82 }
83
84 public boolean hasChild(final String name) {
85 return findChild(name) != null;
86 }
87
88 public boolean hasChild(final String name, final String xmlns) {
89 return findChild(name, xmlns) != null;
90 }
91
92 public List<Element> getChildren() {
93 return this.children;
94 }
95
96 public Element setChildren(List<Element> children) {
97 this.children = children;
98 return this;
99 }
100
101 public final String getContent() {
102 return content;
103 }
104
105 public Element setAttribute(String name, String value) {
106 if (name != null && value != null) {
107 this.attributes.put(name, value);
108 }
109 return this;
110 }
111
112 public Element setAttributes(Hashtable<String, String> attributes) {
113 this.attributes = attributes;
114 return this;
115 }
116
117 public String getAttribute(String name) {
118 if (this.attributes.containsKey(name)) {
119 return this.attributes.get(name);
120 } else {
121 return null;
122 }
123 }
124
125 public Jid getAttributeAsJid(String name) {
126 final String jid = this.getAttribute(name);
127 if (jid != null && !jid.isEmpty()) {
128 try {
129 return Jid.fromString(jid);
130 } catch (final InvalidJidException e) {
131 Log.e(Config.LOGTAG, "could not parse jid " + jid);
132 return null;
133 }
134 }
135 return null;
136 }
137
138 public Hashtable<String, String> getAttributes() {
139 return this.attributes;
140 }
141
142 public String toString() {
143 StringBuilder elementOutput = new StringBuilder();
144 if ((content == null) && (children.size() == 0)) {
145 Tag emptyTag = Tag.empty(name);
146 emptyTag.setAtttributes(this.attributes);
147 elementOutput.append(emptyTag.toString());
148 } else {
149 Tag startTag = Tag.start(name);
150 startTag.setAtttributes(this.attributes);
151 elementOutput.append(startTag);
152 if (content != null) {
153 elementOutput.append(XmlHelper.encodeEntities(content));
154 } else {
155 for (Element child : children) {
156 elementOutput.append(child.toString());
157 }
158 }
159 Tag endTag = Tag.end(name);
160 elementOutput.append(endTag);
161 }
162 return elementOutput.toString();
163 }
164
165 public final String getName() {
166 return name;
167 }
168
169 public void clearChildren() {
170 this.children.clear();
171 }
172
173 public void setAttribute(String name, long value) {
174 this.setAttribute(name, Long.toString(value));
175 }
176
177 public void setAttribute(String name, int value) {
178 this.setAttribute(name, Integer.toString(value));
179 }
180
181 public boolean getAttributeAsBoolean(String name) {
182 String attr = getAttribute(name);
183 return (attr != null && (attr.equalsIgnoreCase("true") || attr.equalsIgnoreCase("1")));
184 }
185
186 public String getNamespace() {
187 return getAttribute("xmlns");
188 }
189}