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43 package net.java.html.js;
45 import java.lang.annotation.ElementType;
46 import java.lang.annotation.Retention;
47 import java.lang.annotation.RetentionPolicy;
48 import java.lang.annotation.Target;
50 /** Put this annotation on a method to provide its special implementation
51 * in JavaScript. This is a way to define <em>native</em> methods that
52 * interact with the surrounding environment.
54 * @author Jaroslav Tulach <jtulach@netbeans.org>
56 @Retention(RetentionPolicy.CLASS)
57 @Target({ ElementType.METHOD, ElementType.CONSTRUCTOR })
58 public @interface JavaScriptBody {
59 /** Names of parameters for the method generated method that can
60 * be referenced from {@link #body()}.
62 * @return array of the names of parameters for the method
65 public String[] args();
67 /** The actual body of the method in JavaScript. This string will be
68 * put into generated header (last character is '{') and footer (e.g. '}').
69 * The body can reference provided arguments. In case of non-static
70 * instance method it may reference <code>this</code>.
72 * @return JavaScript body of a function which can access {@link #args()} and possibly
77 /** Should a special syntax for calling back into Java object be turned on?
78 * The syntax begins with <b>{@code @}</b> followed by fully qualified
79 * package name of the class. Now followed by <b>::</b> and a method in
80 * the class followed by its parameters enclosed inside <b>(...)</b>.
81 * This is the syntax one can use to call <code>run()</code>
82 * method of {@link Runnable}:
83 * <pre>r.@java.lang.Runnable::run()()</pre>.
84 * One can also call static methods. Just use:
85 * <pre>var ten = @java.lang.Integer::parseInt(Ljava/lang/String;)("10")</pre>
87 * @return true, if the script should be scanned for special callback
90 public boolean javacall() default false;