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/*
* 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.jetbrains.python.refactoring.move;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.*;
import com.intellij.refactoring.BaseRefactoringProcessor;
import com.intellij.refactoring.RefactoringBundle;
import com.intellij.refactoring.move.MoveCallback;
import com.intellij.refactoring.move.MoveHandlerDelegate;
import com.intellij.refactoring.util.CommonRefactoringUtil;
import com.intellij.util.IncorrectOperationException;
import com.jetbrains.python.PyBundle;
import com.jetbrains.python.psi.PyClass;
import com.jetbrains.python.psi.PyFunction;
import com.jetbrains.python.psi.PyUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* @author vlan
*/
public class PyMoveClassOrFunctionDelegate extends MoveHandlerDelegate {
@Override
public boolean canMove(PsiElement[] elements, @Nullable PsiElement targetContainer) {
for (PsiElement element : elements) {
if (element instanceof PyClass || element instanceof PyFunction) continue;
return false;
}
return super.canMove(elements, targetContainer);
}
@Override
public void doMove(Project project,
PsiElement[] elements,
@Nullable PsiElement targetContainer,
@Nullable MoveCallback callback) {
PsiNamedElement[] elementsToMove = new PsiNamedElement[elements.length];
for (int i = 0; i < elements.length; i++) {
final PsiNamedElement e = getElementToMove(elements[i]);
if (e == null) {
return;
}
elementsToMove[i] = e;
}
String initialDestination = null;
if (targetContainer instanceof PsiFile) {
final VirtualFile virtualFile = ((PsiFile)targetContainer).getVirtualFile();
if (virtualFile != null) {
initialDestination = FileUtil.toSystemDependentName(virtualFile.getPath());
}
}
final PyMoveClassOrFunctionDialog dialog = new PyMoveClassOrFunctionDialog(project, elementsToMove, initialDestination);
dialog.show();
if (!dialog.isOK()) {
return;
}
final String destination = dialog.getTargetPath();
final boolean previewUsages = dialog.isPreviewUsages();
try {
final BaseRefactoringProcessor processor = new PyMoveClassOrFunctionProcessor(project, elementsToMove, destination, previewUsages);
processor.run();
}
catch (IncorrectOperationException e) {
CommonRefactoringUtil.showErrorMessage(RefactoringBundle.message("error.title"), e.getMessage(),
null, project);
}
}
@Override
public boolean tryToMove(@NotNull PsiElement element,
@NotNull Project project,
@Nullable DataContext dataContext,
@Nullable PsiReference reference,
@Nullable Editor editor) {
final PsiNamedElement e = getElementToMove(element);
if (e instanceof PyClass || e instanceof PyFunction) {
if (PyUtil.isTopLevel(e)) {
PsiElement targetContainer = null;
if (editor != null) {
final Document document = editor.getDocument();
targetContainer = PsiDocumentManager.getInstance(project).getPsiFile(document);
}
doMove(project, new PsiElement[] {e}, targetContainer, null);
}
else {
CommonRefactoringUtil.showErrorHint(project, editor, PyBundle.message("refactoring.move.class.or.function.error.selection"),
RefactoringBundle.message("error.title"), null);
}
return true;
}
return false;
}
@Nullable
public static PsiNamedElement getElementToMove(@NotNull PsiElement element) {
if (element instanceof PsiNamedElement) {
return (PsiNamedElement)element;
}
return null;
}
}
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