org.mozilla.javascript.annotations.JSFunction Java Examples

/**
 * An example of a variable-arguments method.
 *
 * All variable arguments methods must have the same number and
 * types of parameters, and must be static. <p>
 * @param cx the Context of the current thread
 * @param thisObj the JavaScript 'this' value.
 * @param args the array of arguments for this call
 * @param funObj the function object of the invoked JavaScript function
 *               This value is useful to compute a scope using
 *               Context.getTopLevelScope().
 * @return computes the string values and types of 'this' and
 * of each of the supplied arguments and returns them in a string.
 *
 * @see org.mozilla.javascript.ScriptableObject#getTopLevelScope
 */
@JSFunction
public static Object varargs(Context cx, Scriptable thisObj,
                                        Object[] args, Function funObj)
{
    StringBuffer buf = new StringBuffer();
    buf.append("this = ");
    buf.append(Context.toString(thisObj));
    buf.append("; args = [");
    for (int i=0; i < args.length; i++) {
        buf.append(Context.toString(args[i]));
        if (i+1 != args.length)
            buf.append(", ");
    }
    buf.append("]");
    return buf.toString();
}
 

/**
 * Read a character.
 *
 * @exception IOException if an error occurred while accessing the file
 *            associated with this object, or EOFException if the object
 *            reached the end of the file
 */
@JSFunction
public String readChar() throws IOException {
    int i = getReader().read();
    if (i == -1)
        return null;
    char[] charArray = { (char) i };
    return new String(charArray);
}
 

private static String getPropertyName(String methodName,
                                      String prefix,
                                      Annotation annotation) {
    if (prefix != null) {
        return methodName.substring(prefix.length());
    }
    String propName = null;
    if (annotation instanceof JSGetter) {
        propName = ((JSGetter) annotation).value();
        if (propName == null || propName.length() == 0) {
            if (methodName.length() > 3 && methodName.startsWith("get")) {
                propName = methodName.substring(3);
                if (Character.isUpperCase(propName.charAt(0))) {
                    if (propName.length() == 1) {
                        propName = propName.toLowerCase();
                    } else if (!Character.isUpperCase(propName.charAt(1))){
                        propName = Character.toLowerCase(propName.charAt(0))
                                + propName.substring(1);
                    }
                }
            }
        }
    } else if (annotation instanceof JSFunction) {
        propName = ((JSFunction) annotation).value();
    } else if (annotation instanceof JSStaticFunction) {
        propName = ((JSStaticFunction) annotation).value();
    }
    if (propName == null || propName.length() == 0) {
        propName = methodName;
    }
    return propName;
}
 

private static void appendApiMethods(StringBuilder builder, Class<?> clazz, String namespace) {
	for (Method met : clazz.getMethods()) {
		if (met.getAnnotation(JSFunction.class) != null
				|| met.getAnnotation(JSStaticFunction.class) != null) {
			appendApiMethodDescription(builder, met, namespace);
		}
	}
	builder.append("\n");
}
 

private static String[] getAllJsFunctions(Class<? extends ScriptableObject> clazz) {
	List<String> allList = new ArrayList<String>();
	for (Method met : clazz.getMethods()) {
		if (met.getAnnotation(JSFunction.class) != null) {
			allList.add(met.getName());
		}
	}
	return allList.toArray(blankArray);
}
 

private static String getPropertyName(String methodName,
                                      String prefix,
                                      Annotation annotation) {
    if (prefix != null) {
        return methodName.substring(prefix.length());
    }
    String propName = null;
    if (annotation instanceof JSGetter) {
        propName = ((JSGetter) annotation).value();
        if (propName == null || propName.length() == 0) {
            if (methodName.length() > 3 && methodName.startsWith("get")) {
                propName = methodName.substring(3);
                if (Character.isUpperCase(propName.charAt(0))) {
                    if (propName.length() == 1) {
                        propName = propName.toLowerCase();
                    } else if (!Character.isUpperCase(propName.charAt(1))){
                        propName = Character.toLowerCase(propName.charAt(0))
                                + propName.substring(1);
                    }
                }
            }
        }
    } else if (annotation instanceof JSFunction) {
        propName = ((JSFunction) annotation).value();
    } else if (annotation instanceof JSStaticFunction) {
        propName = ((JSStaticFunction) annotation).value();
    }
    if (propName == null || propName.length() == 0) {
        propName = methodName;
    }
    return propName;
}
 

/**
 * Get the Java writer.
 *
 * @see File#getReader
 *
 */
@JSFunction
public Object getWriter() {
    if (writer == null)
        return null;
    Scriptable parent = ScriptableObject.getTopLevelScope(this);
    return Context.javaToJS(writer, parent);
}
 

/**
 * Get the Java reader.
 */
@JSFunction("getReader")
public Object getJSReader() {
    if (reader == null)
        return null;
    // Here we use toObject() to "wrap" the BufferedReader object
    // in a Scriptable object so that it can be manipulated by
    // JavaScript.
    Scriptable parent = ScriptableObject.getTopLevelScope(this);
    return Context.javaToJS(reader, parent);
}
 

/**
 * Close the file. It may be reopened.
 *
 * Implements a JavaScript function.
 * @exception IOException if an error occurred while accessing the file
 *            associated with this object
 */
@JSFunction
public void close() throws IOException {
    if (reader != null) {
        reader.close();
        reader = null;
    } else if (writer != null) {
        writer.close();
        writer = null;
    }
}
 

@JSFunction
public long spawnCow(double x, double y, double z, String tex) {
	if (invalidTexName(tex)) {
		tex = "mob/cow.png";
	}
	long entityId = spawnEntityImpl((float) x, (float) y, (float) z, 11, tex);
	return entityId;
}
 

@JSFunction
public long spawnChicken(double x, double y, double z, String tex) {
	if (invalidTexName(tex)) {
		tex = "mob/chicken.png";
	}
	long entityId = spawnEntityImpl((float) x, (float) y, (float) z, 10, tex);
	return entityId;
}
 

/**
 * Read the remaining lines in the file and return them in an array.
 *
 * Implements a JavaScript function.<p>
 *
 * This is a good example of creating a new array and setting
 * elements in that array.
 *
 * @exception IOException if an error occurred while accessing the file
 *            associated with this object
 */
@JSFunction
public Object readLines()
    throws IOException
{
    List<String> list = new ArrayList<String>();
    String s;
    while ((s = readLine()) != null) {
        list.add(s);
    }
    String[] lines = list.toArray(new String[list.size()]);
    Scriptable scope = ScriptableObject.getTopLevelScope(this);
    Context cx = Context.getCurrentContext();
    return cx.newObject(scope, "Array", lines);
}
 

@JSFunction
public double getPitch(Object entObj) {
	long ent;
	if (entObj == null || !(entObj instanceof Number)) {
		ent = getPlayerEnt();
	} else {
		ent = ((Number) entObj).longValue();
	}
	return nativeGetPitch(ent);
}
 

@JSFunction
public double getYaw(Object entObj) {
	long ent;
	if (entObj == null || !(entObj instanceof Number)) {
		ent = getPlayerEnt();
	} else {
		ent = ((Number) entObj).longValue();
	}
	return nativeGetYaw(ent);
}
 

@JSFunction
public long spawnPigZombie(double x, double y, double z, int item, String tex) {
	if (invalidTexName(tex)) {
		tex = null;
	}
	long entityId = spawnEntityImpl((float) x, (float) y, (float) z, 36, tex);
	if (item == 0 || !nativeIsValidItem(item)) item = 283; // gold sword
	nativeSetCarriedItem(entityId, item, 1, 0);
	return entityId;
}
 

@JSFunction
public long bl_spawnMob(double x, double y, double z, int typeId, String tex) {
	if (invalidTexName(tex)) {
		tex = null;
	}
	long entityId = spawnEntityImpl((float) x, (float) y, (float) z, typeId, tex);
	return entityId;
}
 

@JSFunction
public void preventDefault() {
	nativePreventDefault();
}
 

@JSFunction
public int getCarriedItem() {
	return nativeGetCarriedItem(ITEMID);
}
 

@JSFunction
public void addItemInventory(int id, int amount, int damage) {
	if (!nativeIsValidItem(id)) throw new RuntimeException("invalid item id " + id);
	nativeAddItemInventory(id, amount, damage);
}
 

@JSFunction
public void rideAnimal(Object /* Flynn */rider, Object mount) {
	nativeRideAnimal(getEntityId(rider), getEntityId(mount));
}
 

@JSFunction
public NativePointer getLevel() {
	return new NativePointer(nativeGetLevel());
	// TODO: WTF does this do?
}
 

@JSFunction
public void setTile(int x, int y, int z, int id, int damage) {
	NativeLevelApi.setTile(x, y, z, id, damage);
}
 

@JSFunction
public void clientMessage(String text) {
	wordWrapClientMessage(text);
}
 

@JSFunction
public void setNightMode(boolean isNight) {
	nativeSetNightMode(isNight);
}
 

@JSFunction
public int getTile(int x, int y, int z) {
	return nativeGetTileWrap(x, y, z);
}
 

@JSFunction
public void setPositionRelative(Object ent, double x, double y, double z) {
	nativeSetPositionRelative(getEntityId(ent), (float) x, (float) y, (float) z);
}
 

@JSFunction
public void setRot(Object ent, double yaw, double pitch) {
	nativeSetRot(getEntityId(ent), (float) yaw, (float) pitch);
}
 

@JSFunction
public void bl_setMobSkin(Object entityId, String tex) {
	NativeEntityApi.setMobSkin(getEntityId(entityId), tex);
}
 

@JSFunction
public void print(String str) {
	scriptPrint(str);
}
 

@JSFunction
public Object instanceFunction() {
    return "instanceFunction";
}