| /******************************************************************************* |
| * Copyright (c) 2004 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.jst.jsp.ui.internal.correction; |
| |
| import java.util.Arrays; |
| import java.util.Comparator; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.dom.ASTNode; |
| import org.eclipse.jdt.core.dom.CompilationUnit; |
| import org.eclipse.jdt.core.dom.SimpleName; |
| import org.eclipse.jdt.internal.corext.dom.LinkedNodeFinder; |
| import org.eclipse.jdt.internal.corext.dom.NodeFinder; |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.JavaPluginImages; |
| import org.eclipse.jdt.internal.ui.text.correction.CorrectionMessages; |
| import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.DocumentEvent; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension2; |
| import org.eclipse.jface.text.contentassist.IContextInformation; |
| import org.eclipse.jface.text.link.LinkedModeModel; |
| import org.eclipse.jface.text.link.LinkedModeUI; |
| import org.eclipse.jface.text.link.LinkedPosition; |
| import org.eclipse.jface.text.link.LinkedPositionGroup; |
| import org.eclipse.jst.jsp.core.internal.java.JSPTranslationUtil; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.ui.texteditor.link.EditorLinkedModeUI; |
| import org.eclipse.wst.sse.ui.internal.StructuredTextViewer; |
| |
| /** |
| * This is a copy of |
| * org.eclipse.jdt.internal.ui.text.correction.LinkedNamesAssistProposal with |
| * the following modifications: |
| * - set viewer redraw to true before apply to work around a repaint problem |
| * - translate AST element offsets to JSP document offsets |
| */ |
| public class LocalRenameQuickAssistProposalJSP implements IJavaCompletionProposal, ICompletionProposalExtension2 { |
| private SimpleName fNode; |
| private IRegion fSelectedRegion; // initialized by apply() |
| private ICompilationUnit fCompilationUnit; |
| |
| public LocalRenameQuickAssistProposalJSP(ICompilationUnit cu, SimpleName node) { |
| fNode = node; |
| fCompilationUnit = cu; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#apply(org.eclipse.jface.text.ITextViewer, |
| * char, int, int) |
| */ |
| public void apply(ITextViewer viewer, char trigger, int stateMask, final int offset) { |
| try { |
| // get full ast |
| CompilationUnit root = JavaPlugin.getDefault().getASTProvider().getAST(fCompilationUnit, true, null); |
| |
| ASTNode nameNode = NodeFinder.perform(root, fNode.getStartPosition(), fNode.getLength()); |
| final int pos = fNode.getStartPosition(); |
| |
| ASTNode[] sameNodes; |
| if (nameNode instanceof SimpleName) { |
| sameNodes = LinkedNodeFinder.findByNode(root, (SimpleName) nameNode); |
| } |
| else { |
| sameNodes = new ASTNode[]{nameNode}; |
| } |
| |
| // sort for iteration order, starting with the node @ offset |
| Arrays.sort(sameNodes, new Comparator() { |
| |
| public int compare(Object o1, Object o2) { |
| return rank((ASTNode) o1) - rank((ASTNode) o2); |
| } |
| |
| /** |
| * Returns the absolute rank of an <code>ASTNode</code>. |
| * Nodes preceding <code>offset</code> are ranked last. |
| * |
| * @param node |
| * the node to compute the rank for |
| * @return the rank of the node with respect to the invocation |
| * offset |
| */ |
| private int rank(ASTNode node) { |
| int relativeRank = node.getStartPosition() + node.getLength() - pos; |
| if (relativeRank < 0) |
| return Integer.MAX_VALUE + relativeRank; |
| else |
| return relativeRank; |
| } |
| |
| }); |
| |
| // TODO CompletionProposalPopup#insertProposal() calls |
| // IRewriteTarget.beginCompoundChange() |
| // which disables redraw in ITextViewer. Workaround for now. |
| ((StructuredTextViewer) viewer).setRedraw(true); |
| |
| IDocument document = viewer.getDocument(); |
| LinkedPositionGroup group = new LinkedPositionGroup(); |
| JSPTranslationUtil translationUtil = new JSPTranslationUtil(document); |
| for (int i = 0; i < sameNodes.length; i++) { |
| ASTNode elem = sameNodes[i]; |
| group.addPosition(new LinkedPosition(document, translationUtil.getTranslation().getJspOffset(elem.getStartPosition()), elem.getLength(), i)); |
| } |
| |
| LinkedModeModel linkedModeModel = new LinkedModeModel(); |
| linkedModeModel.addGroup(group); |
| linkedModeModel.forceInstall(); |
| |
| LinkedModeUI ui= new EditorLinkedModeUI(linkedModeModel, viewer); |
| ui.setExitPosition(viewer, offset, 0, LinkedPositionGroup.NO_STOP); |
| ui.enter(); |
| |
| fSelectedRegion = ui.getSelectedRegion(); |
| } |
| catch (BadLocationException e) { |
| JavaPlugin.log(e); |
| } |
| } |
| |
| /* |
| * @see ICompletionProposal#apply(IDocument) |
| */ |
| public void apply(IDocument document) { |
| // can't do anything |
| } |
| |
| /* |
| * @see ICompletionProposal#getSelection(IDocument) |
| */ |
| public Point getSelection(IDocument document) { |
| return new Point(fSelectedRegion.getOffset(), fSelectedRegion.getLength()); |
| } |
| |
| /* |
| * @see ICompletionProposal#getAdditionalProposalInfo() |
| */ |
| public String getAdditionalProposalInfo() { |
| return CorrectionMessages.getString("LinkedNamesAssistProposal.proposalinfo"); //$NON-NLS-1$ |
| } |
| |
| /* |
| * @see ICompletionProposal#getDisplayString() |
| */ |
| public String getDisplayString() { |
| return CorrectionMessages.getString("LinkedNamesAssistProposal.description"); //$NON-NLS-1$ |
| } |
| |
| /* |
| * @see ICompletionProposal#getImage() |
| */ |
| public Image getImage() { |
| return JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL); |
| } |
| |
| /* |
| * @see ICompletionProposal#getContextInformation() |
| */ |
| public IContextInformation getContextInformation() { |
| return null; |
| } |
| |
| /* |
| * @see IJavaCompletionProposal#getRelevance() |
| */ |
| public int getRelevance() { |
| return 1; |
| } |
| |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#selected(org.eclipse.jface.text.ITextViewer, |
| * boolean) |
| */ |
| public void selected(ITextViewer textViewer, boolean smartToggle) { |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#unselected(org.eclipse.jface.text.ITextViewer) |
| */ |
| public void unselected(ITextViewer textViewer) { |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#validate(org.eclipse.jface.text.IDocument, |
| * int, org.eclipse.jface.text.DocumentEvent) |
| */ |
| public boolean validate(IDocument document, int offset, DocumentEvent event) { |
| return false; |
| } |
| } |