| /******************************************************************************* |
| * Copyright (c) 2000, 2006 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * 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 (IContextInformation info : infos) { |
| if (fContextInformation.equals(info)) |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| } |