    001    // Copyright 2007, 2008, 2009 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    //     http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014
    015    package org.apache.tapestry5.internal.bindings;
    016
    017    import org.apache.tapestry5.Asset;
    018    import org.apache.tapestry5.Binding;
    019    import org.apache.tapestry5.ComponentResources;
    020    import org.apache.tapestry5.ioc.Location;
    021    import org.apache.tapestry5.ioc.Resource;
    022    import org.apache.tapestry5.services.AssetSource;
    023    import org.apache.tapestry5.services.BindingFactory;
    024
    025    /**
    026     * Binding factory where the expression is a reference to an asset.
    027     *
    028     * @see org.apache.tapestry5.services.AssetSource
    029     * @see org.apache.tapestry5.internal.bindings.ContextBindingFactory
    030     */
    031    public class AssetBindingFactory implements BindingFactory
    032    {
    033        private final AssetSource source;
    034
    035        public AssetBindingFactory(AssetSource source)
    036        {
    037            this.source = source;
    038        }
    039
    040        public Binding newBinding(String description, ComponentResources container, ComponentResources component,
    041                                  String expression, Location location)
    042        {
    043            Resource baseResource = container.getBaseResource();
    044
    045            Asset asset = source.getAsset(baseResource, expression, container.getLocale());
    046
    047            return new AssetBinding(location, description, asset);
    048        }
    049    }