| /* |
| * Copyright 2000-2014 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 org.jetbrains.plugins.groovy.annotator.intentions; |
| |
| import com.intellij.codeInsight.CodeInsightUtilCore; |
| import com.intellij.codeInsight.template.Template; |
| import com.intellij.codeInsight.template.TemplateBuilderImpl; |
| import com.intellij.codeInsight.template.TemplateManager; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.fileEditor.FileEditorManager; |
| import com.intellij.openapi.fileEditor.OpenFileDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.GlobalSearchScope; |
| import com.intellij.util.ArrayUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.GroovyBundle; |
| import org.jetbrains.plugins.groovy.intentions.base.Intention; |
| import org.jetbrains.plugins.groovy.intentions.base.PsiElementPredicate; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElementFactory; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrStatement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrVariableDeclaration; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.types.GrTypeElement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.util.GrVariableDeclarationOwner; |
| import org.jetbrains.plugins.groovy.lang.psi.expectedTypes.GroovyExpectedTypesProvider; |
| import org.jetbrains.plugins.groovy.lang.psi.expectedTypes.TypeConstraint; |
| import org.jetbrains.plugins.groovy.template.expressions.ChooseTypeExpression; |
| |
| /** |
| * @author ven |
| */ |
| public class CreateLocalVariableFromUsageFix extends Intention { |
| private final GrVariableDeclarationOwner myOwner; |
| private final GrReferenceExpression myRefExpression; |
| |
| public CreateLocalVariableFromUsageFix(GrReferenceExpression refExpression, GrVariableDeclarationOwner owner) { |
| myRefExpression = refExpression; |
| myOwner = owner; |
| } |
| |
| @Override |
| @NotNull |
| public String getText() { |
| return GroovyBundle.message("create.variable.from.usage", myRefExpression.getReferenceName()); |
| } |
| |
| @Override |
| @NotNull |
| public String getFamilyName() { |
| return GroovyBundle.message("create.from.usage.family.name"); |
| } |
| |
| @Override |
| public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) { |
| return myOwner.isValid() && myRefExpression.isValid(); |
| } |
| |
| @Nullable |
| protected static Editor positionCursor(Project project, PsiFile targetFile, PsiElement element) { |
| TextRange range = element.getTextRange(); |
| int textOffset = range.getStartOffset(); |
| |
| VirtualFile vFile = targetFile.getVirtualFile(); |
| assert vFile != null; |
| OpenFileDescriptor descriptor = new OpenFileDescriptor(project, vFile, textOffset); |
| return FileEditorManager.getInstance(project).openTextEditor(descriptor, true); |
| } |
| |
| @Override |
| protected void processIntention(@NotNull PsiElement element, Project project, Editor editor) throws IncorrectOperationException { |
| final PsiFile file = element.getContainingFile(); |
| PsiClassType type = JavaPsiFacade.getInstance(project).getElementFactory().createTypeByFQClassName("Object", GlobalSearchScope.allScope(project)); |
| GrVariableDeclaration decl = GroovyPsiElementFactory.getInstance(project).createVariableDeclaration(ArrayUtil.EMPTY_STRING_ARRAY, "", type, myRefExpression.getReferenceName()); |
| int offset = myRefExpression.getTextRange().getStartOffset(); |
| GrStatement anchor = findAnchor(file, offset); |
| |
| TypeConstraint[] constraints = GroovyExpectedTypesProvider.calculateTypeConstraints(myRefExpression); |
| if (myRefExpression.equals(anchor)) { |
| decl = myRefExpression.replaceWithStatement(decl); |
| } |
| else { |
| decl = myOwner.addVariableDeclarationBefore(decl, anchor); |
| } |
| GrTypeElement typeElement = decl.getTypeElementGroovy(); |
| assert typeElement != null; |
| ChooseTypeExpression expr = new ChooseTypeExpression(constraints, PsiManager.getInstance(project), typeElement.getResolveScope()); |
| TemplateBuilderImpl builder = new TemplateBuilderImpl(decl); |
| builder.replaceElement(typeElement, expr); |
| decl = CodeInsightUtilCore.forcePsiPostprocessAndRestoreElement(decl); |
| Template template = builder.buildTemplate(); |
| |
| Editor newEditor = positionCursor(project, myOwner.getContainingFile(), decl); |
| TextRange range = decl.getTextRange(); |
| newEditor.getDocument().deleteString(range.getStartOffset(), range.getEndOffset()); |
| |
| TemplateManager manager = TemplateManager.getInstance(project); |
| manager.startTemplate(newEditor, template); |
| |
| } |
| |
| @NotNull |
| @Override |
| protected PsiElementPredicate getElementPredicate() { |
| return new PsiElementPredicate() { |
| @Override |
| public boolean satisfiedBy(PsiElement element) { |
| return myRefExpression.isValid() && myOwner.isValid(); |
| } |
| }; |
| } |
| |
| @Nullable |
| private GrStatement findAnchor(PsiFile file, int offset) { |
| PsiElement element = file.findElementAt(offset); |
| if (element == null && offset > 0) element = file.findElementAt(offset - 1); |
| while (element != null) { |
| if (myOwner.equals(element.getParent())) return element instanceof GrStatement ? (GrStatement)element : null; |
| element = element.getParent(); |
| } |
| return null; |
| } |
| |
| |
| @Override |
| public boolean startInWriteAction() { |
| return true; |
| } |
| } |