/*******************************************************************************
* Copyright 2009, 2010 Lars Grammel
*
* 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 org.thechiselgroup.choosel.core.client.views.model;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.thechiselgroup.choosel.core.client.resources.DataType;
import org.thechiselgroup.choosel.core.client.resources.DataTypeToListMap;
import org.thechiselgroup.choosel.core.client.resources.ResourceSet;
import org.thechiselgroup.choosel.core.client.resources.ResourceSetUtils;
import org.thechiselgroup.choosel.core.client.util.math.SumCalculation;
import org.thechiselgroup.choosel.core.client.views.resolvers.CalculationResolver;
import org.thechiselgroup.choosel.core.client.views.resolvers.FirstResourcePropertyResolver;
import org.thechiselgroup.choosel.core.client.views.resolvers.TextPropertyResolver;
import org.thechiselgroup.choosel.core.client.views.resolvers.ViewItemValueResolver;
public class DefaultSlotMappingInitializer implements SlotMappingInitializer {
private Map<DataType, ViewItemValueResolver> defaultDataTypeResolvers = new HashMap<DataType, ViewItemValueResolver>();
private ViewItemValueResolver getSlotResolver(
DataTypeToListMap<String> propertiesByDataType, Slot slot) {
DataType dataType = slot.getDataType();
List<String> properties = propertiesByDataType.get(dataType);
// fallback to default values if there are no corresponding slots
if (properties.isEmpty()) {
return defaultDataTypeResolvers.get(dataType);
}
assert !properties.isEmpty();
// dynamic resolution
String firstProperty = properties.get(0);
switch (dataType) {
case TEXT:
return new TextPropertyResolver(firstProperty);
case NUMBER:
return new CalculationResolver(firstProperty, new SumCalculation());
}
return new FirstResourcePropertyResolver(firstProperty, dataType);
}
@Override
public void initializeMappings(ResourceSet resources,
ViewContentDisplay contentDisplay,
SlotMappingConfiguration slotMappingConfiguration) {
DataTypeToListMap<String> propertiesByDataType = ResourceSetUtils
.getPropertiesByDataType(resources);
for (Slot slot : contentDisplay.getSlots()) {
if (slotMappingConfiguration.isSlotInitialized(slot)) {
continue;
}
slotMappingConfiguration.setResolver(slot,
getSlotResolver(propertiesByDataType, slot));
}
}
public void putDefaultDataTypeValues(ViewItemValueResolver resolver) {
defaultDataTypeResolvers.put(resolver.getVisualDimensionDataType(),
resolver);
}
}