org.eclipse.jface.text.contentassist
Class ContextInformationValidator

java.lang.Object
  |
  +--org.eclipse.jface.text.contentassist.ContextInformationValidator

All Implemented Interfaces:

IContextInformationValidator

public final class ContextInformationValidator

extends Object

implements IContextInformationValidator

A default implementation of the IContextInfomationValidator interface. This implementation determines whether the information is valid by asking the content assist processor for all context information objects for the current position. If the currently displayed information is in the result set, the context information is considered valid.

Constructor Summary

ContextInformationValidator(IContentAssistProcessor processor)
Creates a new context information validator which is ready to be installed on a particular context information.

Method Summary

void	install(IContextInformation contextInformation, ITextViewer viewer, int position) Installs this validator for the given context information.
boolean	isContextInformationValid(int position) Returns whether the information this validator is installed on is still valid at the given document position.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ContextInformationValidator

public ContextInformationValidator(IContentAssistProcessor processor)

Creates a new context information validator which is ready to be installed on a particular context information.

Parameters:

processor - the processor to be used for validation

Method Detail

install

public void install(IContextInformation contextInformation,
                    ITextViewer viewer,
                    int position)

Description copied from interface: IContextInformationValidator

Installs this validator for the given context information.

Specified by:

install in interface IContextInformationValidator

Parameters:

contextInformation - the context information which this validator should check

viewer - the text viewer on which the information is presented

position - the document position for which the information has been computed

isContextInformationValid

public boolean isContextInformationValid(int position)

Description copied from interface: IContextInformationValidator

Returns whether the information this validator is installed on is still valid at the given document position.

Specified by:

isContextInformationValid in interface IContextInformationValidator

Parameters:

position - the current position within the document

Returns:

true if the information also valid at the given document position