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Central module for Tapestry, containing interfaces to the Java
Servlet API and all core services and components.
// Copyright 2009 The Apache Software Foundation
//
// 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.apache.tapestry5.internal.pageload;
import org.apache.tapestry5.internal.structure.ComponentPageElement;
import org.apache.tapestry5.ioc.Locatable;
/**
* Encapsulates logic related to assembling an embedded component within a {@link org.apache.tapestry5.internal.pageload.ComponentAssembler}.
*/
interface EmbeddedComponentAssembler extends Locatable
{
/**
* Returns the assembler responsible for creating instances of this embedded component.
*/
ComponentAssembler getComponentAssembler();
/**
* Creates a binder that can later be used to bind the parameter. The parameter name may be unqualified ("value") or
* have a mixin prefix ("mymixin.value"). In the former case, the correct mixin is located (though the more typical
* case is to bind a parameter of the component itself, not a parameter of a mixin attached to the component). In
* the latter case, the mixinId is validated (to ensure it exists).
*
* If the name of the parameter does not match a formal parameter of the component (or mixin) and the component (or
* mixin) does not support informal parameters, then null is returned.
*
* This method should only be called at page-assembly time as it requires some data that is collected during
* ComponentAssembly construction in order to handle published parameters of embedded components.
*
* @param parameterName simple or qualified parameter name
* @return object that can bind the parameter
*/
ParameterBinder createParameterBinder(String parameterName);
/**
* Checks to see if the parameter name has been bound.
*/
boolean isBound(String parameterName);
/**
* Marks the parameter name as bound. This is necessary to keep template bindings from overriding bindings in the
* {@link org.apache.tapestry5.annotations.Component} annotation (even inherited bindings).
*/
void setBound(String parameterName);
/**
* Adds mixins to the newly created embedded element.
*
* @param newElement new element requiring mixins
*/
void addMixinsToElement(ComponentPageElement newElement);
}