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Java Source Code / Java Documentation » Library » Tapestry » org.apache.tapestry.internal

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Class Diagram

Java Document (Java Doc)

org.apache.tapestry.internal .InternalComponentResources

All known Subclasses:   org.apache.tapestry.internal.structure .InternalComponentResourcesImpl,
InternalComponentResources
public interface InternalComponentResources extends ComponentResources,InternalComponentResourcesCommon(Code)
An extension of org.apache.tapestry.ComponentResources that represents additional methods that are private to the framework and not exposed in any public APIs. Ideally, there will not be any need for this interface (we'll see as we go).

Method Summary
Component getCoreComponent()
     For a normal component, the same as InternalComponentResources.getComponent() , but for a mixin, returns the component to which the mixin is attached.
boolean isInvariant(String parameterName)
     Returns true if the named parameter's org.apache.tapestry.Binding is invariant, false if otherwise, or if the parameter is not bound.
void persistFieldChange(String fieldName, Object newValue)
     Posts a change to a persistent field.
T readParameter(String parameterName, Class<T> expectedType)
     Reads the value of a parameter, via the parameter's org.apache.tapestry.Binding .
void writeParameter(String parameterName, T parameterValue)
     Updates a parameter.

Method Detail
getCoreComponent
Component getCoreComponent()(Code)
For a normal component, the same as InternalComponentResources.getComponent() , but for a mixin, returns the component to which the mixin is attached.

isInvariant
boolean isInvariant(String parameterName)(Code)
Returns true if the named parameter's org.apache.tapestry.Binding is invariant, false if otherwise, or if the parameter is not bound. Invariant bindings are cached more aggresively than variant bindings.
Parameters:
  parameterName - the name of parameter to check for invariance

persistFieldChange
void persistFieldChange(String fieldName, Object newValue)(Code)
Posts a change to a persistent field. If the component is still loading, then this change is ignored. Otherwise, it is propogated, via the Page.persistFieldChange(org.apache.tapestry.internal.structure.ComponentPageElementStringObject) page to the PersistentFieldManager .

readParameter
T readParameter(String parameterName, Class<T> expectedType)(Code)
Reads the value of a parameter, via the parameter's org.apache.tapestry.Binding . <
Parameters:
  T - >
Parameters:
  parameterName - the name of the parameter to read
Parameters:
  expectedType - the expected type of parameter the value for the parameter, or null if the parameter is not bound.

writeParameter
void writeParameter(String parameterName, T parameterValue)(Code)
Updates a parameter. It is an error to update a parameter which is not bound. The parameter org.apache.tapestry.Binding binding may also not support updates. <
Parameters:
  T - >
Parameters:
  parameterName - of parameter to update
Parameters:
  parameterValue - new value (which may be null)

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