    001// Copyright 2010-2013 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.
    014package org.apache.tapestry5.internal.services;
    015
    016import org.apache.tapestry5.OptionModel;
    017import org.apache.tapestry5.SelectModel;
    018import org.apache.tapestry5.commons.services.PropertyAccess;
    019import org.apache.tapestry5.commons.util.CollectionFactory;
    020import org.apache.tapestry5.internal.OptionModelImpl;
    021import org.apache.tapestry5.internal.SelectModelImpl;
    022import org.apache.tapestry5.services.SelectModelFactory;
    023import org.apache.tapestry5.services.ValueEncoderSource;
    024import org.apache.tapestry5.services.ValueLabelProvider;
    025
    026import java.util.List;
    027
    028public class SelectModelFactoryImpl implements SelectModelFactory
    029{
    030    private final PropertyAccess propertyAccess;
    031
    032    private final ValueEncoderSource valueEncoderSource;
    033
    034    private final ValueLabelProvider<Object> valueLabelProvider;
    035
    036    public SelectModelFactoryImpl(PropertyAccess propertyAccess, ValueEncoderSource valueEncoderSource, ValueLabelProvider<Object> valueLabelProvider)
    037    {
    038        this.propertyAccess = propertyAccess;
    039        this.valueEncoderSource = valueEncoderSource;
    040        this.valueLabelProvider = valueLabelProvider;
    041    }
    042
    043
    044    public SelectModel create(List<?> objects, String labelProperty)
    045    {
    046        PropertyValueLabelProvider propertyValueLabelProvider = new PropertyValueLabelProvider(
    047                valueEncoderSource, propertyAccess, labelProperty);
    048
    049        return createSelectModel(objects, propertyValueLabelProvider);
    050    }
    051
    052    public SelectModel create(List<?> objects)
    053    {
    054        return createSelectModel(objects, valueLabelProvider);
    055    }
    056
    057    private SelectModel createSelectModel(List<?> objects, ValueLabelProvider<Object> labelProvider)
    058    {
    059        final List<OptionModel> options = CollectionFactory.newList();
    060
    061        for (Object object : objects)
    062        {
    063            String label = labelProvider.getLabel(object);
    064
    065            options.add(new OptionModelImpl(label, object));
    066        }
    067
    068        return new SelectModelImpl(null, options);
    069    }
    070}