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/*
* Copyright (C) 2014 RoboVM AB
*
* 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.bugvm.objc;
import com.bugvm.objc.annotation.Property;
/**
* Base class for all Objective-C extension classes (categories). Note that
* it is not possible to create new categories in Java which adds methods to
* Objective-C classes.
*/
public abstract class ObjCExtensions {
protected static void initObject(ObjCObject o, long handle) {
o.initObject(handle);
}
/**
* Updates a strong reference handling {@code null} values properly. This
* is only meant to be used internally for {@link Property} setter methods
* with {@code strongRef=true}.
*
* @param thiz the owner of the property.
* @param before the previous value for the property. If not {@code null}
* and not equal to {@code after} {@link #removeStrongRef(Object)}
* will be called on this value.
* @param after the new value for the property. If not {@code null}
* and not equal to {@code after} {@link #addStrongRef(Object)}
* will be called on this value.
*/
protected static void updateStrongRef(ObjCObject o, Object before, Object after) {
o.updateStrongRef(before, after);
}
}