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1
21 package org.lobobrowser.js;
22
23 import org.mozilla.javascript.*;
24
25 public class JavaConstructorObject extends ScriptableObject implements Function {
26 private final JavaClassWrapper classWrapper;
27 private final JavaInstantiator instantiator;
28 private final String  name;
29
30 public JavaConstructorObject(String name, JavaClassWrapper classWrapper) {
31 this.name = name;
32 this.classWrapper = classWrapper;
33 this.instantiator = new SimpleInstantiator(classWrapper);
34 }
35
36 public JavaConstructorObject(String name, JavaClassWrapper classWrapper, JavaInstantiator instantiator) {
37 this.name = name;
38 this.classWrapper = classWrapper;
39 this.instantiator = instantiator;
40 }
41
42 public String getClassName() {
43 return this.name;
44 }
45
46 public Object call(Context cx, Scriptable scope, Scriptable thisObj, Object [] args) {
47 throw new UnsupportedOperationException ();
48 }
49
50 public Scriptable construct(Context cx, Scriptable scope, Object [] args) {
51 try {
52 Object javaObject = this.instantiator.newInstance();
53 Scriptable newObject = new JavaObjectWrapper(this.classWrapper, javaObject);
54 newObject.setParentScope(scope);
55 return newObject;
56 } catch(Exception err) {
57 throw new IllegalStateException (err.getMessage());
58 }
59 }
60
61 public java.lang.Object getDefaultValue(java.lang.Class hint) {
62 if(String .class.equals(hint)) {
63 return "function " + this.name;
64 }
65 else {
66 return super.getDefaultValue(hint);
67 }
68 }
69
70 public static class SimpleInstantiator implements JavaInstantiator {
71 private final JavaClassWrapper classWrapper;
72
73 public SimpleInstantiator(final JavaClassWrapper classWrapper) {
74 super();
75 this.classWrapper = classWrapper;
76 }
77
78 public Object newInstance() throws InstantiationException , IllegalAccessException {
79 return this.classWrapper.newInstance();
80 }
81 }
82 }
83 |
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Java API By Example, From Geeks To Geeks.