| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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.internal.ui.text.java; |
| |
| |
| |
| import org.eclipse.swt.graphics.Image; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| |
| import org.eclipse.jface.text.contentassist.IContextInformation; |
| import org.eclipse.jface.text.contentassist.IContextInformationExtension; |
| |
| import org.eclipse.jdt.core.CompletionProposal; |
| |
| import org.eclipse.jdt.ui.text.java.CompletionProposalLabelProvider; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| |
| |
| /** |
| * Implementation of the <code>IContextInformation</code> interface. |
| */ |
| public final class ProposalContextInformation implements IContextInformation, IContextInformationExtension { |
| |
| private final String fContextDisplayString; |
| private final String fInformationDisplayString; |
| private final Image fImage; |
| private int fPosition; |
| |
| /** |
| * Creates a new context information. |
| */ |
| public ProposalContextInformation(CompletionProposal proposal) { |
| // don't cache the core proposal because the ContentAssistant might |
| // hang on to the context info. |
| CompletionProposalLabelProvider labelProvider= new CompletionProposalLabelProvider(); |
| fInformationDisplayString= labelProvider.createParameterList(proposal); |
| ImageDescriptor descriptor= labelProvider.createImageDescriptor(proposal); |
| if (descriptor != null) |
| fImage= JavaPlugin.getImageDescriptorRegistry().get(descriptor); |
| else |
| fImage= null; |
| if (proposal.getCompletion().length == 0) |
| fPosition= proposal.getCompletionLocation() + 1; |
| else |
| fPosition= -1; |
| fContextDisplayString= labelProvider.createLabel(proposal); |
| } |
| |
| /* |
| * @see IContextInformation#equals |
| */ |
| public boolean equals(Object object) { |
| if (object instanceof IContextInformation) { |
| IContextInformation contextInformation= (IContextInformation) object; |
| boolean equals= getInformationDisplayString().equalsIgnoreCase(contextInformation.getInformationDisplayString()); |
| if (getContextDisplayString() != null) |
| equals= equals && getContextDisplayString().equalsIgnoreCase(contextInformation.getContextDisplayString()); |
| return equals; |
| } |
| return false; |
| } |
| |
| /* |
| * @see IContextInformation#getInformationDisplayString() |
| */ |
| public String getInformationDisplayString() { |
| return fInformationDisplayString; |
| } |
| |
| /* |
| * @see IContextInformation#getImage() |
| */ |
| public Image getImage() { |
| return fImage; |
| } |
| |
| /* |
| * @see IContextInformation#getContextDisplayString() |
| */ |
| public String getContextDisplayString() { |
| return fContextDisplayString; |
| } |
| |
| /* |
| * @see IContextInformationExtension#getContextInformationPosition() |
| */ |
| public int getContextInformationPosition() { |
| return fPosition; |
| } |
| |
| /** |
| * Sets the context information position. |
| * |
| * @param position the new position, or -1 for unknown. |
| * @since 3.1 |
| */ |
| public void setContextInformationPosition(int position) { |
| fPosition= position; |
| } |
| } |