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| package org.apache.tapestry.enhance; |
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| import java.util.Iterator; |
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| import org.apache.hivemind.ErrorLog; |
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| import org.apache.hivemind.Location; |
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| import org.apache.tapestry.IComponent; |
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| import org.apache.tapestry.event.PageDetachListener; |
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| import org.apache.tapestry.spec.IComponentSpecification; |
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| public class AbstractPropertyWorker implements EnhancementWorker |
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| { |
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| private ErrorLog _errorLog; |
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| |
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| public void performEnhancement(EnhancementOperation op, IComponentSpecification spec)
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| { |
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| Location location = spec.getLocation();
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| Iterator i = op.findUnclaimedAbstractProperties().iterator();
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| while (i.hasNext())
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| { |
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| String name = (String) i.next();
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| try
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| { |
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| createProperty(op, name, location);
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| } |
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| catch (Exception ex) |
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| { |
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| _errorLog.error(
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| EnhanceMessages.errorAddingProperty(name, op.getBaseClass(), ex), |
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| location, |
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| ex); |
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| } |
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| } |
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| } |
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| private void createProperty(EnhancementOperation op, String name, Location location)
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| { |
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| Class propertyType = op.getPropertyType(name);
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| String fieldName = "_$" + name;
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| String defaultFieldName = fieldName + "$defaultValue";
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| op.addField(fieldName, propertyType);
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| op.addField(defaultFieldName, propertyType);
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| EnhanceUtils.createSimpleAccessor(op, fieldName, name, propertyType, location);
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| EnhanceUtils.createSimpleMutator(op, fieldName, name, propertyType, location);
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| op.extendMethodImplementation(
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| IComponent.class, |
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| EnhanceUtils.FINISH_LOAD_SIGNATURE, |
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| defaultFieldName + " = " + fieldName + ";"); |
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| op.extendMethodImplementation(
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| PageDetachListener.class, |
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| EnhanceUtils.PAGE_DETACHED_SIGNATURE, |
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| fieldName + " = " + defaultFieldName + ";"); |
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| op.claimProperty(name);
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| } |
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| public void setErrorLog(ErrorLog errorLog)
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| { |
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| _errorLog = errorLog;
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| } |
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| } |