| /******************************************************************************* |
| * Copyright (c) 2005, 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.internal.ui.text.java; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.TextUtilities; |
| import org.eclipse.jface.text.templates.TemplateContextType; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| |
| import org.eclipse.jdt.internal.corext.template.java.JavaContextType; |
| import org.eclipse.jdt.internal.corext.template.java.JavaDocContextType; |
| |
| import org.eclipse.jdt.ui.text.IJavaPartitions; |
| import org.eclipse.jdt.ui.text.java.IJavaCompletionProposalComputer; |
| import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal; |
| import org.eclipse.jdt.ui.text.java.JavaContentAssistInvocationContext; |
| import org.eclipse.jdt.ui.text.java.ContentAssistInvocationContext; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.text.template.contentassist.TemplateEngine; |
| import org.eclipse.jdt.internal.ui.text.template.contentassist.TemplateProposal; |
| |
| /** |
| * |
| * @since 3.2 |
| */ |
| public final class TemplateCompletionProposalComputer implements IJavaCompletionProposalComputer { |
| |
| private final TemplateEngine fJavaTemplateEngine; |
| private final TemplateEngine fJavadocTemplateEngine; |
| |
| public TemplateCompletionProposalComputer() { |
| TemplateContextType contextType= JavaPlugin.getDefault().getTemplateContextRegistry().getContextType(JavaContextType.NAME); |
| if (contextType == null) { |
| contextType= new JavaContextType(); |
| JavaPlugin.getDefault().getTemplateContextRegistry().addContextType(contextType); |
| } |
| if (contextType != null) |
| fJavaTemplateEngine= new TemplateEngine(contextType); |
| else |
| fJavaTemplateEngine= null; |
| contextType= JavaPlugin.getDefault().getTemplateContextRegistry().getContextType("javadoc"); //$NON-NLS-1$ |
| if (contextType == null) { |
| contextType= new JavaDocContextType(); |
| JavaPlugin.getDefault().getTemplateContextRegistry().addContextType(contextType); |
| } |
| if (contextType != null) |
| fJavadocTemplateEngine= new TemplateEngine(contextType); |
| else |
| fJavadocTemplateEngine= null; |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalComputer#computeCompletionProposals(org.eclipse.jface.text.contentassist.TextContentAssistInvocationContext, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| public List computeCompletionProposals(ContentAssistInvocationContext context, IProgressMonitor monitor) { |
| TemplateEngine engine; |
| try { |
| String partition= TextUtilities.getContentType(context.getDocument(), IJavaPartitions.JAVA_PARTITIONING, context.getInvocationOffset(), true); |
| if (partition.equals(IJavaPartitions.JAVA_DOC)) |
| engine= fJavadocTemplateEngine; |
| else |
| engine= fJavaTemplateEngine; |
| } catch (BadLocationException x) { |
| return Collections.EMPTY_LIST; |
| } |
| |
| if (engine != null) { |
| if (!(context instanceof JavaContentAssistInvocationContext)) |
| return Collections.EMPTY_LIST; |
| |
| JavaContentAssistInvocationContext javaContext= (JavaContentAssistInvocationContext) context; |
| ICompilationUnit unit= javaContext.getCompilationUnit(); |
| if (unit == null) |
| return Collections.EMPTY_LIST; |
| |
| engine.reset(); |
| engine.complete(javaContext.getViewer(), javaContext.getInvocationOffset(), unit); |
| |
| TemplateProposal[] templateProposals= engine.getResults(); |
| List result= new ArrayList(Arrays.asList(templateProposals)); |
| |
| IJavaCompletionProposal[] keyWordResults= javaContext.getKeywordProposals(); |
| if (keyWordResults.length > 0) { |
| List removals= new ArrayList(); |
| |
| // update relevance of template proposals that match with a keyword |
| // give those templates slightly more relevance than the keyword to |
| // sort them first |
| // remove keyword templates that don't have an equivalent |
| // keyword proposal |
| if (keyWordResults.length > 0) { |
| outer: for (int k= 0; k < templateProposals.length; k++) { |
| TemplateProposal curr= templateProposals[k]; |
| String name= curr.getTemplate().getName(); |
| for (int i= 0; i < keyWordResults.length; i++) { |
| String keyword= keyWordResults[i].getDisplayString(); |
| if (name.startsWith(keyword)) { |
| curr.setRelevance(keyWordResults[i].getRelevance() + 1); |
| continue outer; |
| } |
| } |
| if (isKeyword(name)) |
| removals.add(curr); |
| } |
| } |
| |
| result.removeAll(removals); |
| } |
| return result; |
| } |
| |
| return Collections.EMPTY_LIST; |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalComputer#computeContextInformation(org.eclipse.jface.text.contentassist.TextContentAssistInvocationContext, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| public List computeContextInformation(ContentAssistInvocationContext context, IProgressMonitor monitor) { |
| return Collections.EMPTY_LIST; |
| } |
| |
| private static final Set KEYWORDS; |
| static { |
| Set keywords= new HashSet(42); |
| keywords.add("abstract"); //$NON-NLS-1$ |
| keywords.add("assert"); //$NON-NLS-1$ |
| keywords.add("break"); //$NON-NLS-1$ |
| keywords.add("case"); //$NON-NLS-1$ |
| keywords.add("catch"); //$NON-NLS-1$ |
| keywords.add("class"); //$NON-NLS-1$ |
| keywords.add("continue"); //$NON-NLS-1$ |
| keywords.add("default"); //$NON-NLS-1$ |
| keywords.add("do"); //$NON-NLS-1$ |
| keywords.add("else"); //$NON-NLS-1$ |
| keywords.add("elseif"); //$NON-NLS-1$ |
| keywords.add("extends"); //$NON-NLS-1$ |
| keywords.add("final"); //$NON-NLS-1$ |
| keywords.add("finally"); //$NON-NLS-1$ |
| keywords.add("for"); //$NON-NLS-1$ |
| keywords.add("if"); //$NON-NLS-1$ |
| keywords.add("implements"); //$NON-NLS-1$ |
| keywords.add("import"); //$NON-NLS-1$ |
| keywords.add("instanceof"); //$NON-NLS-1$ |
| keywords.add("interface"); //$NON-NLS-1$ |
| keywords.add("native"); //$NON-NLS-1$ |
| keywords.add("new"); //$NON-NLS-1$ |
| keywords.add("package"); //$NON-NLS-1$ |
| keywords.add("private"); //$NON-NLS-1$ |
| keywords.add("protected"); //$NON-NLS-1$ |
| keywords.add("public"); //$NON-NLS-1$ |
| keywords.add("return"); //$NON-NLS-1$ |
| keywords.add("static"); //$NON-NLS-1$ |
| keywords.add("strictfp"); //$NON-NLS-1$ |
| keywords.add("super"); //$NON-NLS-1$ |
| keywords.add("switch"); //$NON-NLS-1$ |
| keywords.add("synchronized"); //$NON-NLS-1$ |
| keywords.add("this"); //$NON-NLS-1$ |
| keywords.add("throw"); //$NON-NLS-1$ |
| keywords.add("throws"); //$NON-NLS-1$ |
| keywords.add("transient"); //$NON-NLS-1$ |
| keywords.add("try"); //$NON-NLS-1$ |
| keywords.add("volatile"); //$NON-NLS-1$ |
| keywords.add("while"); //$NON-NLS-1$ |
| keywords.add("true"); //$NON-NLS-1$ |
| keywords.add("false"); //$NON-NLS-1$ |
| keywords.add("null"); //$NON-NLS-1$ |
| KEYWORDS= Collections.unmodifiableSet(keywords); |
| } |
| |
| private boolean isKeyword(String name) { |
| return KEYWORDS.contains(name); |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalComputer#getErrorMessage() |
| */ |
| public String getErrorMessage() { |
| return null; |
| } |
| |
| /* |
| * @see org.eclipse.jdt.ui.text.java.IJavaCompletionProposalComputer#sessionStarted() |
| */ |
| public void sessionStarted() { |
| } |
| |
| /* |
| * @see org.eclipse.jdt.ui.text.java.IJavaCompletionProposalComputer#sessionEnded() |
| */ |
| public void sessionEnded() { |
| fJavadocTemplateEngine.reset(); |
| fJavaTemplateEngine.reset(); |
| } |
| } |