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/*******************************************************************************
* Copyright (c) 2000, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jface.contentassist;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.contentassist.IContextInformation;
/**
* A default implementation of the {@link SubjectControlContextInformationValidator} 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.
*
* @since 3.0
* @deprecated As of 3.2, replaced by Platform UI's field assist support
*/
@Deprecated
public final class SubjectControlContextInformationValidator implements ISubjectControlContextInformationValidator {
/** The content assist processor. */
private IContentAssistProcessor fProcessor;
/** The context information to be validated. */
private IContextInformation fContextInformation;
/** The content assist subject control. */
private IContentAssistSubjectControl fContentAssistSubjectControl;
/**
* Creates a new context information validator which is ready to be installed on
* a particular context information.
*
* @param processor the processor to be used for validation
*/
public SubjectControlContextInformationValidator(IContentAssistProcessor processor) {
fProcessor= processor;
}
@Override
public void install(IContextInformation contextInformation, ITextViewer viewer, int offset) {
throw new UnsupportedOperationException();
}
@Override
public void install(IContextInformation contextInformation, IContentAssistSubjectControl contentAssistSubjectControl, int offset) {
fContextInformation= contextInformation;
fContentAssistSubjectControl= contentAssistSubjectControl;
}
@Override
public boolean isContextInformationValid(int offset) {
if (fContentAssistSubjectControl != null && fProcessor instanceof ISubjectControlContentAssistProcessor) {
IContextInformation[] infos= ((ISubjectControlContentAssistProcessor)fProcessor).computeContextInformation(fContentAssistSubjectControl, offset);
if (infos != null && infos.length > 0) {
for (int i= 0; i < infos.length; i++) {
if (fContextInformation.equals(infos[i]))
return true;
}
}
}
return false;
}
}
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