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- /*
- * Copyright 2000-2014 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.annotations;
-
- import java.lang.annotation.Documented;
- import java.lang.annotation.ElementType;
- import java.lang.annotation.Retention;
- import java.lang.annotation.RetentionPolicy;
- import java.lang.annotation.Target;
-
- import com.vaadin.client.communication.StateChangeEvent;
-
- /**
- * Marks a method in Connector classes that should be used to handle changes to
- * specific properties in the connector's shared state.
- * <p>
- * The annotated method will be called whenever at least one of the named state
- * properties have changed. If multiple listened properties are changed by the
- * same {@link StateChangeEvent}, the method will only be called once.
- * <p>
- * If there is no state variable with the provided name, the widgetset
- * compilation will fail.
- *
- * @since 7.2
- * @author Vaadin Ltd
- */
- @Retention(RetentionPolicy.RUNTIME)
- @Target(ElementType.METHOD)
- @Documented
- public @interface OnStateChange {
- /**
- * Defines a list of property names to listen for.
- *
- * @return an array of property names, should contain at least one item
- */
- public String[] value();
- }
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