/*******************************************************************************
* Copyright (c) 2013 GoPivotal, Inc.
* 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:
* GoPivotal, Inc. - initial API and implementation
*******************************************************************************/
package org.springframework.ide.eclipse.quickfix.jdt.proposals;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jdt.core.IAnnotation;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.dom.AST;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.Annotation;
import org.eclipse.jdt.core.dom.ArrayInitializer;
import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jdt.core.dom.MemberValuePair;
import org.eclipse.jdt.core.dom.NormalAnnotation;
import org.eclipse.jdt.core.dom.SingleMemberAnnotation;
import org.eclipse.jdt.core.dom.StringLiteral;
import org.eclipse.jdt.core.dom.rewrite.ASTRewrite;
import org.eclipse.jdt.core.dom.rewrite.ITrackedNodePosition;
import org.eclipse.jdt.internal.core.SourceRefElement;
import org.eclipse.jdt.internal.ui.text.correction.AssistContext;
import org.eclipse.jdt.ui.text.java.JavaContentAssistInvocationContext;
import org.eclipse.jface.text.source.SourceViewer;
import org.springframework.ide.eclipse.quickfix.QuickfixImages;
/**
*
* @author Terry Denney
* @since 3.3.0
*
*/
public class PackageNameCompletionProposal extends AnnotationCompletionProposal {
private final String packageName;
private Annotation annotation;
private ASTNode oldLiteral;
private IAnnotation iAnnotation;
private JavaContentAssistInvocationContext javaContext;
public PackageNameCompletionProposal(String packageName, IAnnotation a,
JavaContentAssistInvocationContext javaContext) {
super(packageName, javaContext.getCompilationUnit(), QuickfixImages.getImage(QuickfixImages.PACKAGE));
this.packageName = packageName;
this.iAnnotation = a;
this.javaContext = javaContext;
}
public PackageNameCompletionProposal(String packageName, Annotation annotation, ASTNode oldNode,
JavaContentAssistInvocationContext javaContext) {
super(packageName, javaContext.getCompilationUnit(), QuickfixImages.getImage(QuickfixImages.PACKAGE));
this.packageName = packageName;
this.annotation = annotation;
this.oldLiteral = oldNode;
}
private boolean isWithinRange(Expression value, int invocationOffset) {
int startPosition = value.getStartPosition();
int length = value.getLength();
return startPosition < invocationOffset && startPosition + length >= invocationOffset;
}
private void setupASTNodes() {
ICompilationUnit cu = javaContext.getCompilationUnit();
SourceViewer sourceViewer = (SourceViewer) javaContext.getViewer();
int invocationOffset = javaContext.getInvocationOffset();
AssistContext assistContext = new AssistContext(cu, sourceViewer, invocationOffset, 0);
ASTNode node = ((SourceRefElement) iAnnotation).findNode(assistContext.getASTRoot());
annotation = (Annotation) node;
if (node instanceof NormalAnnotation) {
NormalAnnotation normalAnnotation = (NormalAnnotation) node;
@SuppressWarnings("unchecked")
List<MemberValuePair> pairs = normalAnnotation.values();
for (MemberValuePair pair : pairs) {
Expression value = pair.getValue();
if (value instanceof StringLiteral) {
if (isWithinRange(value, invocationOffset)) {
oldLiteral = value;
}
}
else if (value instanceof ArrayInitializer) {
ArrayInitializer arrayInit = (ArrayInitializer) value;
@SuppressWarnings("unchecked")
List<Expression> expressions = arrayInit.expressions();
for (Expression expression : expressions) {
if (expression instanceof StringLiteral) {
if (isWithinRange(expression, invocationOffset)) {
oldLiteral = expression;
}
}
}
}
}
}
else if (node instanceof SingleMemberAnnotation) {
SingleMemberAnnotation singleMemberAnnotation = (SingleMemberAnnotation) node;
Expression value = singleMemberAnnotation.getValue();
if (isWithinRange(value, invocationOffset)) {
oldLiteral = value;
}
}
}
@Override
protected ASTRewrite getRewrite() throws CoreException {
setupASTNodes();
AST ast = annotation.getAST();
ASTRewrite rewrite = ASTRewrite.create(ast);
if (oldLiteral == null) {
return rewrite;
}
StringLiteral newValue = ast.newStringLiteral();
newValue.setLiteralValue(packageName);
ITrackedNodePosition newValuePosition = rewrite.track(newValue);
rewrite.replace(oldLiteral, newValue, null);
setTrackPosition(new StringLiteralTrackedPosition(newValuePosition, newValuePosition.getStartPosition() + 1
+ packageName.length(), 0, true));
return rewrite;
}
}