| /* |
| * Copyright 2000-2013 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.refactoring.encapsulateFields; |
| |
| import com.intellij.openapi.actionSystem.CommonDataKeys; |
| import com.intellij.openapi.actionSystem.DataContext; |
| import com.intellij.openapi.actionSystem.PlatformDataKeys; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.ScrollType; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiClass; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiField; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.refactoring.HelpID; |
| import com.intellij.refactoring.RefactoringActionHandler; |
| import com.intellij.refactoring.RefactoringBundle; |
| import com.intellij.refactoring.util.CommonRefactoringUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.HashSet; |
| |
| public class EncapsulateFieldsHandler implements RefactoringActionHandler { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.refactoring.encapsulateFields.EncapsulateFieldsHandler"); |
| public static final String REFACTORING_NAME = RefactoringBundle.message("encapsulate.fields.title"); |
| |
| public void invoke(@NotNull Project project, Editor editor, PsiFile file, DataContext dataContext) { |
| int offset = editor.getCaretModel().getOffset(); |
| editor.getScrollingModel().scrollToCaret(ScrollType.MAKE_VISIBLE); |
| PsiElement element = file.findElementAt(offset); |
| while (true) { |
| if (element == null || element instanceof PsiFile) { |
| String message = RefactoringBundle.getCannotRefactorMessage(RefactoringBundle.message("error.wrong.caret.position.class")); |
| CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.ENCAPSULATE_FIELDS); |
| return; |
| } |
| if (element instanceof PsiField) { |
| if (((PsiField) element).getContainingClass() == null) { |
| String message = RefactoringBundle.getCannotRefactorMessage(RefactoringBundle.message("the.field.should.be.declared.in.a.class")); |
| CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.ENCAPSULATE_FIELDS); |
| return; |
| } |
| invoke(project, new PsiElement[]{element}, dataContext); |
| return; |
| } |
| if (element instanceof PsiClass) { |
| invoke(project, new PsiElement[]{element}, dataContext); |
| return; |
| } |
| element = element.getParent(); |
| } |
| } |
| |
| /** |
| * if elements.length == 1 the expected value is either PsiClass or PsiField |
| * if elements.length > 1 the expected values are PsiField objects only |
| */ |
| public void invoke(@NotNull final Project project, @NotNull final PsiElement[] elements, DataContext dataContext) { |
| PsiClass aClass = null; |
| final HashSet<PsiField> preselectedFields = new HashSet<PsiField>(); |
| if (elements.length == 1) { |
| if (elements[0] instanceof PsiClass) { |
| aClass = (PsiClass) elements[0]; |
| } else if (elements[0] instanceof PsiField) { |
| PsiField field = (PsiField) elements[0]; |
| aClass = field.getContainingClass(); |
| preselectedFields.add(field); |
| } else { |
| return; |
| } |
| } else { |
| for (PsiElement element : elements) { |
| if (!(element instanceof PsiField)) { |
| return; |
| } |
| PsiField field = (PsiField)element; |
| if (aClass == null) { |
| aClass = field.getContainingClass(); |
| preselectedFields.add(field); |
| } |
| else { |
| if (aClass.equals(field.getContainingClass())) { |
| preselectedFields.add(field); |
| } |
| else { |
| String message = RefactoringBundle.getCannotRefactorMessage( |
| RefactoringBundle.message("fields.to.be.refactored.should.belong.to.the.same.class")); |
| Editor editor = CommonDataKeys.EDITOR.getData(dataContext); |
| CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.ENCAPSULATE_FIELDS); |
| return; |
| } |
| } |
| } |
| } |
| |
| LOG.assertTrue(aClass != null); |
| final PsiField[] fields = aClass.getFields(); |
| if (fields.length == 0) { |
| CommonRefactoringUtil.showErrorHint(project, CommonDataKeys.EDITOR.getData(dataContext), "Class has no fields to encapsulate", |
| REFACTORING_NAME, HelpID.ENCAPSULATE_FIELDS); |
| return; |
| } |
| |
| if (aClass.isInterface()) { |
| String message = RefactoringBundle.getCannotRefactorMessage( |
| RefactoringBundle.message("encapsulate.fields.refactoring.cannot.be.applied.to.interface")); |
| Editor editor = CommonDataKeys.EDITOR.getData(dataContext); |
| CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.ENCAPSULATE_FIELDS); |
| return; |
| } |
| |
| if (!CommonRefactoringUtil.checkReadOnlyStatus(project, aClass)) return; |
| |
| EncapsulateFieldsDialog dialog = createDialog(project, aClass, preselectedFields); |
| dialog.show(); |
| } |
| |
| protected EncapsulateFieldsDialog createDialog(Project project, PsiClass aClass, HashSet<PsiField> preselectedFields) { |
| return new EncapsulateFieldsDialog( |
| project, |
| aClass, |
| preselectedFields, |
| new JavaEncapsulateFieldHelper()); |
| } |
| } |