| /* |
| * Copyright 2000-2011 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.intention.IntentionAction; |
| import com.intellij.codeInsight.template.impl.InvokeTemplateAction; |
| import com.intellij.codeInsight.template.impl.TemplateImpl; |
| import com.intellij.codeInsight.template.impl.TemplateManagerImpl; |
| import com.intellij.codeInsight.template.impl.TemplateSettings; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.SelectionModel; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.InheritanceUtil; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.HashSet; |
| |
| /** |
| * User: anna |
| */ |
| public class IterateOverIterableIntention implements IntentionAction { |
| private static final Logger LOG = Logger.getInstance("#" + IterateOverIterableIntention.class.getName()); |
| |
| @Override |
| public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) { |
| final TemplateImpl template = getTemplate(); |
| if (template != null) { |
| int offset = editor.getCaretModel().getOffset(); |
| int startOffset = offset; |
| if (editor.getSelectionModel().hasSelection()) { |
| final int selStart = editor.getSelectionModel().getSelectionStart(); |
| final int selEnd = editor.getSelectionModel().getSelectionEnd(); |
| startOffset = (offset == selStart) ? selEnd : selStart; |
| } |
| PsiElement element = file.findElementAt(startOffset); |
| while (element instanceof PsiWhiteSpace) { |
| element = element.getPrevSibling(); |
| } |
| PsiStatement psiStatement = PsiTreeUtil.getParentOfType(element, PsiStatement.class, false); |
| if (psiStatement != null) { |
| startOffset = psiStatement.getTextRange().getStartOffset(); |
| } |
| if (!template.isDeactivated() && |
| (TemplateManagerImpl.isApplicable(file, offset, template) || |
| (TemplateManagerImpl.isApplicable(file, startOffset, template)))) { |
| return getIterableExpression(editor, file) != null; |
| } |
| } |
| return false; |
| } |
| |
| @Nullable |
| private static TemplateImpl getTemplate() { |
| return TemplateSettings.getInstance().getTemplate("I", "surround"); |
| } |
| |
| |
| @NotNull |
| @Override |
| public String getText() { |
| return "Iterate"; |
| } |
| |
| @Nullable |
| private static PsiExpression getIterableExpression(Editor editor, PsiFile file) { |
| final SelectionModel selectionModel = editor.getSelectionModel(); |
| if (selectionModel.hasSelection()) { |
| PsiElement elementAtStart = file.findElementAt(selectionModel.getSelectionStart()); |
| PsiElement elementAtEnd = file.findElementAt(selectionModel.getSelectionEnd() - 1); |
| if (elementAtStart == null || elementAtStart instanceof PsiWhiteSpace || elementAtStart instanceof PsiComment) { |
| elementAtStart = PsiTreeUtil.skipSiblingsForward(elementAtStart, PsiWhiteSpace.class, PsiComment.class); |
| if (elementAtStart == null) return null; |
| } |
| if (elementAtEnd == null || elementAtEnd instanceof PsiWhiteSpace || elementAtEnd instanceof PsiComment) { |
| elementAtEnd = PsiTreeUtil.skipSiblingsBackward(elementAtEnd, PsiWhiteSpace.class, PsiComment.class); |
| if (elementAtEnd == null) return null; |
| } |
| PsiElement parent = PsiTreeUtil.findCommonParent(elementAtStart, elementAtEnd); |
| if (parent instanceof PsiExpression) { |
| final PsiType type = ((PsiExpression)parent).getType(); |
| return type instanceof PsiArrayType || InheritanceUtil.isInheritor(type, CommonClassNames.JAVA_LANG_ITERABLE) |
| ? (PsiExpression)parent |
| : null; |
| } |
| return null; |
| } |
| |
| PsiElement element = file.findElementAt(editor.getCaretModel().getOffset()); |
| while (element instanceof PsiWhiteSpace) { |
| element = element.getPrevSibling(); |
| } |
| if (element instanceof PsiExpressionStatement) { |
| element = ((PsiExpressionStatement)element).getExpression().getLastChild(); |
| } |
| while ((element = PsiTreeUtil.getParentOfType(element, PsiExpression.class, true)) != null) { |
| final PsiElement parent = element.getParent(); |
| if (parent instanceof PsiMethodCallExpression) continue; |
| if (!(parent instanceof PsiExpressionStatement)) return null; |
| final PsiType type = ((PsiExpression)element).getType(); |
| if (type instanceof PsiArrayType || InheritanceUtil.isInheritor(type, CommonClassNames.JAVA_LANG_ITERABLE)) return (PsiExpression)element; |
| } |
| return null; |
| } |
| |
| @Override |
| public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException { |
| final TemplateImpl template = getTemplate(); |
| SelectionModel selectionModel = editor.getSelectionModel(); |
| if (!selectionModel.hasSelection()) { |
| final PsiExpression iterableExpression = getIterableExpression(editor, file); |
| LOG.assertTrue(iterableExpression != null); |
| TextRange textRange = iterableExpression.getTextRange(); |
| selectionModel.setSelection(textRange.getStartOffset(), textRange.getEndOffset()); |
| } |
| new InvokeTemplateAction(template, editor, project, new HashSet<Character>()).perform(); |
| } |
| |
| @Override |
| public boolean startInWriteAction() { |
| return false; |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return getText(); |
| } |
| } |