/**
* @return proposed variable names (may be empty, but not null). The first proposal should be used
* as "best guess" (if it exists).
*/
public String[] guessConstantNames() {
if (fGuessedConstNames == null) {
try {
Expression expression = getSelectedExpression().getAssociatedExpression();
if (expression != null) {
ITypeBinding binding = expression.resolveTypeBinding();
fGuessedConstNames =
StubUtility.getVariableNameSuggestions(
StubUtility.CONSTANT_FIELD,
fCu.getJavaScriptProject(),
binding,
expression,
Arrays.asList(getExcludedVariableNames()));
}
} catch (JavaScriptModelException e) {
}
if (fGuessedConstNames == null) fGuessedConstNames = new String[0];
}
return fGuessedConstNames;
}
private void createConstantDeclaration() throws CoreException {
Type type = getConstantType();
IExpressionFragment fragment = getSelectedExpression();
String initializerSource =
fCu.getBuffer().getText(fragment.getStartPosition(), fragment.getLength());
AST ast = fCuRewrite.getAST();
VariableDeclarationFragment variableDeclarationFragment = ast.newVariableDeclarationFragment();
variableDeclarationFragment.setName(ast.newSimpleName(fConstantName));
variableDeclarationFragment.setInitializer(
(Expression)
fCuRewrite
.getASTRewrite()
.createStringPlaceholder(initializerSource, ASTNode.SIMPLE_NAME));
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.getJavaScriptProject())
.createComments;
if (createComments) {
String comment =
CodeGeneration.getFieldComment(
fCu, getConstantTypeName(), fConstantName, StubUtility.getLineDelimiterUsed(fCu));
if (comment != null && comment.length() > 0) {
JSdoc doc =
(JSdoc) fCuRewrite.getASTRewrite().createStringPlaceholder(comment, ASTNode.JSDOC);
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 = fragment.getAssociatedExpression().resolveTypeBinding();
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);
}
}
ModifierCorrectionSubProcessor.installLinkedVisibilityProposals(
fLinkedProposalModel, rewrite, fieldDeclaration.modifiers(), false);
}
}