| /* |
| * Copyright 2000-2012 JetBrains s.r.o. |
| * |
| * Licensed 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 com.intellij.codeInsight.daemon.impl.quickfix; |
| |
| import com.intellij.codeInsight.daemon.QuickFixBundle; |
| import com.intellij.codeInsight.intention.impl.BaseIntentionAction; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.refactoring.changeClassSignature.ChangeClassSignatureDialog; |
| import com.intellij.refactoring.changeClassSignature.TypeParameterInfo; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.*; |
| |
| /** |
| * @author Danila Ponomarenko |
| */ |
| public class ChangeClassSignatureFromUsageFix extends BaseIntentionAction { |
| private final PsiClass myClass; |
| private final PsiReferenceParameterList myParameterList; |
| |
| public ChangeClassSignatureFromUsageFix(@NotNull PsiClass aClass, |
| @NotNull PsiReferenceParameterList parameterList) { |
| myClass = aClass; |
| myParameterList = parameterList; |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return QuickFixBundle.message("change.class.signature.family"); |
| } |
| |
| @Override |
| public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) { |
| if (!myClass.isValid() || !myParameterList.isValid()) { |
| return false; |
| } |
| |
| if (myClass.getTypeParameters().length >= myParameterList.getTypeArguments().length) { |
| return false; |
| } |
| |
| final PsiTypeParameterList classTypeParameterList = myClass.getTypeParameterList(); |
| if (classTypeParameterList == null) { |
| return false; |
| } |
| |
| setText(QuickFixBundle.message("change.class.signature.text", myClass.getName(), myParameterList.getText())); |
| |
| return true; |
| } |
| |
| @Override |
| public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException { |
| final PsiTypeParameterList classTypeParameterList = myClass.getTypeParameterList(); |
| if (classTypeParameterList == null) { |
| return; |
| } |
| |
| ChangeClassSignatureDialog dialog = new ChangeClassSignatureDialog( |
| myClass, |
| createTypeParameters( |
| JavaCodeFragmentFactory.getInstance(project), |
| Arrays.asList(classTypeParameterList.getTypeParameters()), |
| Arrays.asList(myParameterList.getTypeParameterElements()) |
| ), |
| false |
| ); |
| dialog.show(); |
| } |
| |
| @NotNull |
| private static Map<TypeParameterInfo, PsiTypeCodeFragment> createTypeParameters(@NotNull JavaCodeFragmentFactory factory, |
| @NotNull List<PsiTypeParameter> classTypeParameters, |
| @NotNull List<PsiTypeElement> typeElements) { |
| final LinkedHashMap<TypeParameterInfo, PsiTypeCodeFragment> result = new LinkedHashMap<TypeParameterInfo, PsiTypeCodeFragment>(); |
| final TypeParameterNameSuggester suggester = new TypeParameterNameSuggester(classTypeParameters); |
| |
| int listIndex = 0; |
| for (PsiTypeElement typeElement : typeElements) { |
| if (listIndex < classTypeParameters.size()) { |
| final PsiTypeParameter typeParameter = classTypeParameters.get(listIndex); |
| |
| if (isAssignable(typeParameter, typeElement.getType())) { |
| result.put(new TypeParameterInfo(listIndex++), null); |
| continue; |
| } |
| } |
| |
| final PsiClassType type = (PsiClassType)typeElement.getType(); |
| result.put(new TypeParameterInfo(suggester.suggest(type), type), factory.createTypeCodeFragment(type.getClassName(), typeElement, true)); |
| } |
| return result; |
| } |
| |
| private static boolean isAssignable(@NotNull PsiTypeParameter typeParameter, @NotNull PsiType type) { |
| for (PsiClassType t : typeParameter.getExtendsListTypes()) { |
| if (!t.isAssignableFrom(type)) { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public boolean startInWriteAction() { |
| return false; |
| } |
| |
| |
| private static class TypeParameterNameSuggester { |
| private final Set<String> usedNames = new HashSet<String>(); |
| |
| public TypeParameterNameSuggester(@NotNull PsiTypeParameter... typeParameters) { |
| this(Arrays.asList(typeParameters)); |
| } |
| |
| public TypeParameterNameSuggester(@NotNull Collection<PsiTypeParameter> typeParameters) { |
| for (PsiTypeParameter p : typeParameters) { |
| usedNames.add(p.getName()); |
| } |
| } |
| |
| @NotNull |
| private String suggestUnusedName(@NotNull String name) { |
| String unusedName = name; |
| int i = 0; |
| while (true) { |
| if (usedNames.add(unusedName)) { |
| return unusedName; |
| } |
| unusedName = name + ++i; |
| } |
| } |
| |
| @NotNull |
| public String suggest(@NotNull PsiClassType type) { |
| return suggestUnusedName(type.getClassName().substring(0, 1).toUpperCase()); |
| } |
| } |
| } |