/*
* Copyright 2010-2012 Research In Motion Limited.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package webworks.pim.appointment.functions;
import webworks.pim.appointment.impl.AptListenerManager;
import blackberry.core.FunctionSignature;
import blackberry.core.ScriptableFunctionBase;
import net.rim.device.api.script.ScriptableFunction;
public class FunctionStartListening extends ScriptableFunctionBase {
public static final String NAME = "startListening";
private AptListenerManager _manager;
public FunctionStartListening(AptListenerManager aptListenerManager) {
_manager = aptListenerManager;
}
public Object execute( Object thiz, Object[] args ) throws Exception {
if(isNullOrEmpty(args)) {
throw new IllegalArgumentException("Missing arguments: expecting reference to event name and callback.");
}
if(!(args[1] instanceof ScriptableFunction)) {
throw new IllegalArgumentException("Invalid argument 1: expecting a callback function.");
}
_manager.startListening((String)args[0], (ScriptableFunction)args[1]);
return UNDEFINED;
}
private boolean isNullOrEmpty(Object[] args) {
return args == null || args.length == 0;
}
/**
* @see net.rim.device.api.web.jse.base.ScriptableFunctionBase
*/
protected FunctionSignature[] getFunctionSignatures() {
FunctionSignature fs = new FunctionSignature(2);
fs.addParam(String.class, true);
fs.addParam(ScriptableFunction.class, false);
return new FunctionSignature[] { fs };
}
}