|
1
21
24 package org.lobobrowser.html.domimpl;
25
26 import org.w3c.dom.Document  ;
27 import org.w3c.dom.UserDataHandler ;
28 import org.w3c.dom.html2.HTMLScriptElement;
29 import org.lobobrowser.html.*;
30 import org.lobobrowser.html.js.Executor;
31 import org.mozilla.javascript.*;
32
33 import java.security.AccessController ;
34 import java.security.PrivilegedAction ;
35 import java.util.logging.*;
36
37 public class HTMLScriptElementImpl extends HTMLElementImpl implements
38 HTMLScriptElement {
39 private static final Logger logger = Logger.getLogger(HTMLScriptElementImpl.class.getName());
40 private static final boolean loggableInfo = logger.isLoggable(Level.INFO);
41
42 public HTMLScriptElementImpl() {
43 super("SCRIPT", true);
44 }
45
46 public HTMLScriptElementImpl(String name) {
47 super(name, true);
48 }
49
50 private String text;
51
52 public String getText() {
53 String t = this.text;
54 if(t == null) {
55 return this.getRawInnerText(true);
56 }
57 else {
58 return t;
59 }
60 }
61
62 public void setText(String text) {
63 this.text = text;
64 }
65
66 public String getHtmlFor() {
67 return this.getAttribute("htmlFor");
68 }
69
70 public void setHtmlFor(String htmlFor) {
71 this.setAttribute("htmlFor", htmlFor);
72 }
73
74 public String getEvent() {
75 return this.getAttribute("event");
76 }
77
78 public void setEvent(String event) {
79 this.setAttribute("event", event);
80 }
81
82 private boolean defer;
83
84 public boolean getDefer() {
85 return this.defer;
86 }
87
88 public void setDefer(boolean defer) {
89 this.defer = defer;
90 }
91
92 public String getSrc() {
93 return this.getAttribute("src");
94 }
95
96 public void setSrc(String src) {
97 this.setAttribute("src", src);
98 }
99
100 public String getType() {
101 return this.getAttribute("type");
102 }
103
104 public void setType(String type) {
105 this.setAttribute("type", type);
106 }
107
108 public Object setUserData(String key, Object data, UserDataHandler handler) {
109 if(org.lobobrowser.html.parser.HtmlParser.MODIFYING_KEY.equals(key) && data != Boolean.TRUE) {
110 this.processScript();
111 }
112 return super.setUserData(key, data, handler);
113 }
114
115 protected final void processScript() {
116 UserAgentContext bcontext = this.getUserAgentContext();
117 if(bcontext == null) {
118 throw new IllegalStateException ("No user agent context.");
119 }
120 if(bcontext.isScriptingEnabled()) {
121 String text;
122 final String scriptURI;
123 int baseLineNumber;
124 String src = this.getSrc();
125 Document doc = this.document;
126 if(!(doc instanceof HTMLDocumentImpl)) {
127 throw new IllegalStateException ("no valid document");
128 }
129 boolean liflag = loggableInfo;
130 if(src == null) {
131 text = this.getText();
132 scriptURI = doc.getBaseURI();
133 baseLineNumber = 1; }
135 else {
136 this.informExternalScriptLoading();
137 java.net.URL scriptURL = ((HTMLDocumentImpl) doc).getFullURL(src);
138 scriptURI = scriptURL == null ? src : scriptURL.toExternalForm();
139 long time1 = liflag ? System.currentTimeMillis() : 0;
140 try {
141 final HttpRequest request = bcontext.createHttpRequest();
142 SecurityManager sm = System.getSecurityManager();
144 if(sm == null) {
145 request.open("GET", scriptURI, false);
146 }
147 else {
148 AccessController.doPrivileged(new PrivilegedAction () {
149 public Object run() {
150 request.open("GET", scriptURI, false);
153 return null;
154 }
155 });
156 }
157 int status = request.getStatus();
158 if(status != 200 && status != 0) {
159 this.warn("Script at [" + scriptURI + "] failed to load; HTTP status: " + status + ".");
160 return;
161 }
162 text = request.getResponseText();
163 } finally {
164 if(liflag) {
165 long time2 = System.currentTimeMillis();
166 logger.info("processScript(): Loaded external Javascript from URI=[" + scriptURI + "] in " + (time2 - time1) + " ms.");
167 }
168 }
169 baseLineNumber = 1;
170 }
171 Context ctx = Executor.createContext(this.getDocumentURL(), bcontext);
172 try {
173 Scriptable scope = (Scriptable) doc.getUserData(Executor.SCOPE_KEY);
174 if(scope == null) {
175 throw new IllegalStateException ("Scriptable (scope) instance was expected to be keyed as UserData to document using " + Executor.SCOPE_KEY);
176 }
177 try {
178 long time1 = liflag ? System.currentTimeMillis() : 0;
179 ctx.evaluateString(scope, text, scriptURI, baseLineNumber, null);
180 if(liflag) {
181 long time2 = System.currentTimeMillis();
182 logger.info("addNotify(): Evaluated (or attempted to evaluate) Javascript in " + (time2 - time1) + " ms.");
183 }
184 } catch(EcmaError ecmaError) {
185 this.warn("Javascript error at " + ecmaError.getSourceName() + ":" + ecmaError.getLineNumber() + ": " + ecmaError.getMessage());
186 } catch(Throwable err) {
187 this.warn("Unable to evaluate Javascript code", err);
188 }
189 } finally {
190 Context.exit();
191 }
192 }
193 }
194 }
195 |
Popular Tags |
Java API By Example, From Geeks To Geeks.