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1 package org.lobobrowser.html.domimpl;
2
3 import org.lobobrowser.html.*;
4 import org.lobobrowser.html.js.Executor;
5 import org.lobobrowser.js.*;
6 import org.mozilla.javascript.*;
7 import org.w3c.dom.*;
8 import java.util.*;
9
10
13 public class HTMLAbstractUIElement extends HTMLElementImpl {
14 private Function onfocus, onblur, onclick, ondblclick, onmousedown, onmouseup, onmouseover, onmousemove, onmouseout, onkeypress, onkeydown, onkeyup;
15
16 public HTMLAbstractUIElement(String  name) {
17 super(name);
18 }
19
20 public Function getOnblur() {
21 return this.getEventFunction(onblur, "onblur");
22 }
23
24 public void setOnblur(Function onblur) {
25 this.onblur = onblur;
26 }
27
28 public Function getOnclick() {
29 return this.getEventFunction(onclick, "onclick");
30 }
31
32 public void setOnclick(Function onclick) {
33 this.onclick = onclick;
34 }
35
36 public Function getOndblclick() {
37 return this.getEventFunction(ondblclick, "ondblclick");
38 }
39
40 public void setOndblclick(Function ondblclick) {
41 this.ondblclick = ondblclick;
42 }
43
44 public Function getOnfocus() {
45 return this.getEventFunction(onfocus, "onfocus");
46 }
47
48 public void setOnfocus(Function onfocus) {
49 this.onfocus = onfocus;
50 }
51
52 public Function getOnkeydown() {
53 return this.getEventFunction(onkeydown, "onkeydown");
54 }
55
56 public void setOnkeydown(Function onkeydown) {
57 this.onkeydown = onkeydown;
58 }
59
60 public Function getOnkeypress() {
61 return this.getEventFunction(onkeypress, "onkeypress");
62 }
63
64 public void setOnkeypress(Function onkeypress) {
65 this.onkeypress = onkeypress;
66 }
67
68 public Function getOnkeyup() {
69 return this.getEventFunction(onkeyup, "onkeyup");
70 }
71
72 public void setOnkeyup(Function onkeyup) {
73 this.onkeyup = onkeyup;
74 }
75
76 public Function getOnmousedown() {
77 return this.getEventFunction(onmousedown, "onmousedown");
78 }
79
80 public void setOnmousedown(Function onmousedown) {
81 this.onmousedown = onmousedown;
82 }
83
84 public Function getOnmousemove() {
85 return this.getEventFunction(onmousemove, "onmousemove");
86 }
87
88 public void setOnmousemove(Function onmousemove) {
89 this.onmousemove = onmousemove;
90 }
91
92 public Function getOnmouseout() {
93 return this.getEventFunction(onmouseout, "onmouseout");
94 }
95
96 public void setOnmouseout(Function onmouseout) {
97 this.onmouseout = onmouseout;
98 }
99
100 public Function getOnmouseover() {
101 return this.getEventFunction(onmouseover, "onmouseover");
102 }
103
104 public void setOnmouseover(Function onmouseover) {
105 this.onmouseover = onmouseover;
106 }
107
108 public Function getOnmouseup() {
109 return this.getEventFunction(onmouseup, "onmouseup");
110 }
111
112 public void setOnmouseup(Function onmouseup) {
113 this.onmouseup = onmouseup;
114 }
115
116 public void focus() {
117 UINode node = this.getUINode();
118 if(node != null) {
119 node.focus();
120 }
121 }
122
123 public void blur() {
124 UINode node = this.getUINode();
125 if(node != null) {
126 node.blur();
127 }
128 }
129
130 private Map functionByAttribute = null;
131
132 protected Function getEventFunction(Function varValue, String attributeName) {
133 if(varValue != null) {
134 return varValue;
135 }
136 String normalAttributeName = this.normalizeAttributeName(attributeName);
137 synchronized(this) {
138 Map fba = this.functionByAttribute;
139 Function f = fba == null ? null : (Function) fba.get(normalAttributeName);
140 if(f != null) {
141 return f;
142 }
143 UserAgentContext uac = this.getUserAgentContext();
144 if(uac == null) {
145 throw new IllegalStateException ("No user agent context.");
146 }
147 if(uac.isScriptingEnabled()) {
148 String attributeValue = this.getAttribute(attributeName);
149 if(attributeValue == null || attributeValue.length() == 0) {
150 f = null;
151 }
152 else {
153 String functionCode = "function " + normalAttributeName + "_" + System.identityHashCode(this) + "() { " + attributeValue + " }";
154 Document doc = this.document;
155 if(doc == null) {
156 throw new IllegalStateException ("Element does not belong to a document.");
157 }
158 Context ctx = Executor.createContext(this.getDocumentURL(), uac);
159 try {
160 Scriptable scope = (Scriptable) doc.getUserData(Executor.SCOPE_KEY);
161 if(scope == null) {
162 throw new IllegalStateException ("Scriptable (scope) instance was expected to be keyed as UserData to document using " + Executor.SCOPE_KEY);
163 }
164 Scriptable thisScope = (Scriptable) JavaScript.getInstance().getJavascriptObject(this, scope);
165 try {
166 f = ctx.compileFunction(thisScope, functionCode, this.getTagName() + "[" + this.getId() + "]." + attributeName, 1, null);
168 } catch(EcmaError ecmaError) {
169 this.warn("Javascript error at " + ecmaError.getSourceName() + ":" + ecmaError.getLineNumber() + ": " + ecmaError.getMessage());
170 f = null;
171 } catch(Throwable err) {
172 this.warn("Unable to evaluate Javascript code", err);
173 f = null;
174 }
175 } finally {
176 Context.exit();
177 }
178 }
179 if(fba == null) {
180 fba = new HashMap(1);
181 this.functionByAttribute = fba;
182 }
183 fba.put(normalAttributeName, f);
184 }
185 return f;
186 }
187 }
188
189 protected void assignAttributeField(String normalName, String value) {
190 super.assignAttributeField(normalName, value);
191 if(normalName.startsWith("on")) {
192 synchronized(this) {
193 Map fba = this.functionByAttribute;
194 if(fba != null) {
195 fba.remove(normalName);
196 }
197 }
198 }
199 }
200 }
201 |
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