private Type getConstantType() throws JavaModelException {
if (fConstantTypeCache == null) {
IExpressionFragment fragment = getSelectedExpression();
ITypeBinding typeBinding = guessBindingForReference(fragment.getAssociatedExpression());
AST ast = fCuRewrite.getAST();
typeBinding = Bindings.normalizeForDeclarationUse(typeBinding, ast);
ImportRewrite importRewrite = fCuRewrite.getImportRewrite();
ImportRewriteContext context =
new ContextSensitiveImportRewriteContext(
fCuRewrite.getRoot(), fSelectionStart, importRewrite);
fConstantTypeCache = importRewrite.addImport(typeBinding, ast, context);
}
return fConstantTypeCache;
}
private void createConstantDeclaration() throws CoreException {
Type type = getConstantType();
IExpressionFragment fragment = getSelectedExpression();
Expression initializer =
getSelectedExpression().createCopyTarget(fCuRewrite.getASTRewrite(), true);
AST ast = fCuRewrite.getAST();
VariableDeclarationFragment variableDeclarationFragment = ast.newVariableDeclarationFragment();
variableDeclarationFragment.setName(ast.newSimpleName(fConstantName));
variableDeclarationFragment.setInitializer(initializer);
FieldDeclaration fieldDeclaration = ast.newFieldDeclaration(variableDeclarationFragment);
fieldDeclaration.setType(type);
Modifier.ModifierKeyword accessModifier = Modifier.ModifierKeyword.toKeyword(fVisibility);
if (accessModifier != null) fieldDeclaration.modifiers().add(ast.newModifier(accessModifier));
fieldDeclaration.modifiers().add(ast.newModifier(Modifier.ModifierKeyword.STATIC_KEYWORD));
fieldDeclaration.modifiers().add(ast.newModifier(Modifier.ModifierKeyword.FINAL_KEYWORD));
boolean createComments =
JavaPreferencesSettings.getCodeGenerationSettings(fCu.getJavaProject()).createComments;
if (createComments) {
String comment =
CodeGeneration.getFieldComment(
fCu, getConstantTypeName(), fConstantName, StubUtility.getLineDelimiterUsed(fCu));
if (comment != null && comment.length() > 0) {
Javadoc doc =
(Javadoc) fCuRewrite.getASTRewrite().createStringPlaceholder(comment, ASTNode.JAVADOC);
fieldDeclaration.setJavadoc(doc);
}
}
AbstractTypeDeclaration parent = getContainingTypeDeclarationNode();
ListRewrite listRewrite =
fCuRewrite.getASTRewrite().getListRewrite(parent, parent.getBodyDeclarationsProperty());
TextEditGroup msg =
fCuRewrite.createGroupDescription(
RefactoringCoreMessages.ExtractConstantRefactoring_declare_constant);
if (insertFirst()) {
listRewrite.insertFirst(fieldDeclaration, msg);
} else {
listRewrite.insertAfter(fieldDeclaration, getNodeToInsertConstantDeclarationAfter(), msg);
}
if (fLinkedProposalModel != null) {
ASTRewrite rewrite = fCuRewrite.getASTRewrite();
LinkedProposalPositionGroup nameGroup = fLinkedProposalModel.getPositionGroup(KEY_NAME, true);
nameGroup.addPosition(rewrite.track(variableDeclarationFragment.getName()), true);
String[] nameSuggestions = guessConstantNames();
if (nameSuggestions.length > 0 && !nameSuggestions[0].equals(fConstantName)) {
nameGroup.addProposal(fConstantName, null, nameSuggestions.length + 1);
}
for (int i = 0; i < nameSuggestions.length; i++) {
nameGroup.addProposal(nameSuggestions[i], null, nameSuggestions.length - i);
}
LinkedProposalPositionGroup typeGroup = fLinkedProposalModel.getPositionGroup(KEY_TYPE, true);
typeGroup.addPosition(rewrite.track(type), true);
ITypeBinding typeBinding = guessBindingForReference(fragment.getAssociatedExpression());
if (typeBinding != null) {
ITypeBinding[] relaxingTypes = ASTResolving.getNarrowingTypes(ast, typeBinding);
for (int i = 0; i < relaxingTypes.length; i++) {
typeGroup.addProposal(relaxingTypes[i], fCuRewrite.getCu(), relaxingTypes.length - i);
}
}
boolean isInterface =
parent.resolveBinding() != null && parent.resolveBinding().isInterface();
ModifierCorrectionSubProcessor.installLinkedVisibilityProposals(
fLinkedProposalModel, rewrite, fieldDeclaration.modifiers(), isInterface);
}
}