/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * 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 android.support.v4.view;

import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;

class LayoutInflaterCompatBase {

    static class FactoryWrapper implements LayoutInflater.Factory {

        final LayoutInflaterFactory mDelegateFactory;

        FactoryWrapper(LayoutInflaterFactory delegateFactory) {
            mDelegateFactory = delegateFactory;
        }

        @Override
        public View onCreateView(String name, Context context, AttributeSet attrs) {
            return mDelegateFactory.onCreateView(null, name, context, attrs);
        }

        public String toString() {
            return getClass().getName() + "{" + mDelegateFactory + "}";
        }
    }

    static void setFactory(LayoutInflater inflater, LayoutInflaterFactory factory) {
        inflater.setFactory(factory != null ? new FactoryWrapper(factory) : null);
    }

    static LayoutInflaterFactory getFactory(LayoutInflater inflater) {
        LayoutInflater.Factory factory = inflater.getFactory();
        if (factory instanceof FactoryWrapper) {
            return ((FactoryWrapper) factory).mDelegateFactory;
        }
        return null;
    }

}