| /******************************************************************************* |
| * 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.jdt.ui.text.java; |
| |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| |
| import org.eclipse.jface.text.contentassist.ICompletionProposal; |
| import org.eclipse.jface.text.contentassist.IContextInformation; |
| |
| /** |
| * Computes completions and context information displayed by the Java editor content assistant. |
| * Contributions to the <tt>org.eclipse.jdt.ui.javaCompletionProposalComputer</tt> extension point |
| * must implement this interface. |
| * |
| * @since 3.2 |
| */ |
| public interface IJavaCompletionProposalComputer { |
| /** |
| * Informs the computer that a content assist session has started. This call will always be |
| * followed by a {@link #sessionEnded()} call, but not necessarily by calls to |
| * {@linkplain #computeCompletionProposals(ContentAssistInvocationContext, IProgressMonitor) computeCompletionProposals} |
| * or |
| * {@linkplain #computeContextInformation(ContentAssistInvocationContext, IProgressMonitor) computeContextInformation}. |
| */ |
| void sessionStarted(); |
| |
| /** |
| * Returns a list of completion proposals valid at the given invocation context. |
| * |
| * @param context the context of the content assist invocation |
| * @param monitor a progress monitor to report progress. The monitor is private to this |
| * invocation, i.e. there is no need for the receiver to spawn a sub monitor. |
| * @return a list of completion proposals (element type: {@link ICompletionProposal}) |
| */ |
| List computeCompletionProposals(ContentAssistInvocationContext context, IProgressMonitor monitor); |
| |
| /** |
| * Returns context information objects valid at the given invocation context. |
| * |
| * @param context the context of the content assist invocation |
| * @param monitor a progress monitor to report progress. The monitor is private to this |
| * invocation, i.e. there is no need for the receiver to spawn a sub monitor. |
| * @return a list of context information objects (element type: {@link IContextInformation}) |
| */ |
| List computeContextInformation(ContentAssistInvocationContext context, IProgressMonitor monitor); |
| |
| /** |
| * Returns the reason why this computer was unable to produce any completion proposals or |
| * context information. |
| * |
| * @return an error message or <code>null</code> if no error occurred |
| */ |
| String getErrorMessage(); |
| |
| /** |
| * Informs the computer that a content assist session has ended. This call will always be after |
| * any calls to |
| * {@linkplain #computeCompletionProposals(ContentAssistInvocationContext, IProgressMonitor) computeCompletionProposals} |
| * and |
| * {@linkplain #computeContextInformation(ContentAssistInvocationContext, IProgressMonitor) computeContextInformation}. |
| */ |
| void sessionEnded(); |
| } |