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- /*
- * Copyright 2000-2013 Vaadin Ltd.
- *
- * 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 com.vaadin.client.metadata;
-
- import com.google.gwt.core.client.JavaScriptObject;
- import com.vaadin.client.JsArrayObject;
-
- /**
- * Special {@link Invoker} that uses JSNI to invoke methods with limited
- * visibility.
- *
- * @since 7.2
- * @author Vaadin Ltd
- */
- public abstract class JsniInvoker implements Invoker {
-
- @Override
- public Object invoke(Object target, Object... params) {
- JsArrayObject<Object> jsParams = JavaScriptObject.createArray().cast();
- for (Object object : params) {
- jsParams.add(object);
- }
- return jsniInvoke(target, jsParams);
- }
-
- /**
- * Abstract method that will be generated to contain JSNI for invoking the
- * actual method.
- *
- * @param target
- * the object upon which to invoke the method
- * @param params
- * a js array with arguments to pass to the method
- * @return the value returned by the invoked method, or <code>null</code> if
- * the target method return type is <code>void</code>.
- */
- protected abstract Object jsniInvoke(Object target,
- JsArrayObject<Object> params);
-
- }
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