/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.click.eclipse.ui.fieldassist;
import java.util.ArrayList;
import java.util.List;
import org.apache.click.eclipse.ClickUtils;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.internal.core.DefaultWorkingCopyOwner;
import org.eclipse.jdt.internal.ui.text.java.JavaCompletionProposal;
import org.eclipse.jdt.internal.ui.text.java.LazyJavaTypeCompletionProposal;
import org.eclipse.jdt.ui.text.java.CompletionProposalCollector;
import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal;
import org.eclipse.jface.fieldassist.IContentProposal;
import org.eclipse.jface.fieldassist.IContentProposalProvider;
/**
* Provides type name completion in the Java project.
*
* @author Naoki Takezoe
*/
public class TypeNameContentProposalProvider implements IContentProposalProvider {
private IJavaProject project;
private String packageName;
/**
* Constructor.
*
* @param project the Java project
*/
public TypeNameContentProposalProvider(IJavaProject project){
this(project, null);
}
/**
* Constructor.
*
* @param project the Java project
* @param packageName prefix of the package name
*/
public TypeNameContentProposalProvider(IJavaProject project, String packageName){
this.project = project;
this.packageName = packageName;
}
public IContentProposal[] getProposals(String contents, int position) {
try {
String rawContents = contents;
CompletionProposalCollector collector = new CompletionProposalCollector(project);
ICompilationUnit unit = FieldAssistUtils.getTemporaryCompilationUnit(project);
contents = contents.substring(0, position);
if(ClickUtils.isNotEmpty(packageName)){
contents = packageName + "." + contents;
}
String source = "public class _xxx { public static void hoge(){ " + contents + "}}";
FieldAssistUtils.setContentsToCU(unit, source);
unit.codeComplete(source.length() - 2, collector, DefaultWorkingCopyOwner.PRIMARY);
IJavaCompletionProposal[] proposals = collector.getJavaCompletionProposals();
List<IContentProposal> result = new ArrayList<IContentProposal>();
for(int j = 0; j < proposals.length; j++){
if(proposals[j].getImage()!=null){
String replaceString = null;
if(proposals[j] instanceof LazyJavaTypeCompletionProposal){
LazyJavaTypeCompletionProposal p = (LazyJavaTypeCompletionProposal)proposals[j];
replaceString = p.getReplacementString();
} else if(proposals[j] instanceof JavaCompletionProposal){
JavaCompletionProposal p = (JavaCompletionProposal)proposals[j];
replaceString = p.getReplacementString();
}
if(ClickUtils.isNotEmpty(replaceString)){
if(replaceString.equals("_xxx")){
continue;
}
if(ClickUtils.isNotEmpty(packageName) && replaceString.startsWith(packageName)){
replaceString = replaceString.substring(packageName.length() + 1);
}
if(ClickUtils.isNotEmpty(replaceString) && replaceString.startsWith(rawContents)){
result.add(new FieldAssistUtils.ContentProposalImpl(replaceString, position));
}
}
}
}
return result.toArray(new IContentProposal[result.size()]);
} catch(Exception ex){
ex.printStackTrace();
}
return null;
}
}