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| package org.apache.tapestry.enhance; |
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| import java.lang.reflect.Modifier; |
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| import org.apache.hivemind.ApplicationRuntimeException; |
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| import org.apache.hivemind.Location; |
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| import org.apache.hivemind.service.BodyBuilder; |
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| import org.apache.hivemind.service.MethodSignature; |
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| import org.apache.tapestry.IPage; |
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| import org.apache.tapestry.spec.InjectSpecification; |
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| public class InjectPageWorker implements InjectEnhancementWorker |
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| { |
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| public void performEnhancement(EnhancementOperation op, InjectSpecification spec)
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| { |
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| performEnhancement(op, spec.getObject(), spec.getProperty(), spec.getLocation());
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| } |
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| public void performEnhancement(EnhancementOperation op, String pageName, String propertyName,
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| Location location) |
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| { |
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| Class propertyType = op.getPropertyType(propertyName);
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| if (propertyType == null)
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| propertyType = Object.class;
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| else if (propertyType.isPrimitive())
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| throw new ApplicationRuntimeException(EnhanceMessages.wrongTypeForPageInjection(
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| propertyName, |
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| propertyType), null, location, null); |
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| op.claimReadonlyProperty(propertyName);
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| MethodSignature sig = new MethodSignature(propertyType, op
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| .getAccessorMethodName(propertyName), null, null); |
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| BodyBuilder builder = new BodyBuilder();
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| builder.add("return ");
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| if (!propertyType.isAssignableFrom(IPage.class))
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| builder.add("({0})", propertyType.getName());
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| builder.add("getPage().getRequestCycle().getPage(\"{0}\");", pageName);
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| op.addMethod(Modifier.PUBLIC, sig, builder.toString(), location);
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| } |
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| } |