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/*
* 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 com.intellij.refactoring.typeMigration;
import com.intellij.lang.ASTNode;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Ref;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.wm.ToolWindowId;
import com.intellij.openapi.wm.ToolWindowManager;
import com.intellij.psi.*;
import com.intellij.psi.impl.PsiImplUtil;
import com.intellij.psi.impl.source.tree.JavaElementType;
import com.intellij.psi.util.PsiUtilCore;
import com.intellij.refactoring.BaseRefactoringProcessor;
import com.intellij.refactoring.typeMigration.ui.FailedConversionsDialog;
import com.intellij.refactoring.typeMigration.ui.MigrationPanel;
import com.intellij.refactoring.typeMigration.usageInfo.TypeMigrationUsageInfo;
import com.intellij.refactoring.util.RefactoringUtil;
import com.intellij.ui.content.Content;
import com.intellij.usageView.UsageInfo;
import com.intellij.usageView.UsageViewDescriptor;
import com.intellij.usageView.UsageViewManager;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import static com.intellij.util.ObjectUtils.assertNotNull;
public class TypeMigrationProcessor extends BaseRefactoringProcessor {
private PsiElement[] myRoot;
private final TypeMigrationRules myRules;
private TypeMigrationLabeler myLabeler;
public TypeMigrationProcessor(final Project project, final PsiElement root, final TypeMigrationRules rules) {
this(project, getRoots(root), rules);
}
public TypeMigrationProcessor(final Project project, final PsiElement[] roots, final TypeMigrationRules rules) {
super(project);
myRoot = roots;
myRules = rules;
}
private static PsiElement[] getRoots(PsiElement root) {
if (root instanceof PsiVariable) {
final PsiElement parent = root.getParent();
if (parent instanceof PsiDeclarationStatement) {
return ((PsiDeclarationStatement)parent).getDeclaredElements();
}
if (root instanceof PsiField) {
final List<PsiField> fields = new ArrayList<PsiField>();
PsiField field = (PsiField)root;
fields.add(field);
while (true) {
ASTNode comma = PsiImplUtil.skipWhitespaceAndComments(field.getNode().getTreeNext());
if (comma == null || comma.getElementType() != JavaTokenType.COMMA) break;
ASTNode nextField = PsiImplUtil.skipWhitespaceAndComments(comma.getTreeNext());
if (nextField == null || nextField.getElementType() != JavaElementType.FIELD) break;
field = (PsiField)nextField.getPsi();
fields.add(field);
}
return fields.toArray(new PsiElement[fields.size()]);
}
}
return new PsiElement[]{root};
}
public static void runHighlightingTypeMigration(final Project project,
final Editor editor,
final TypeMigrationRules rules,
final PsiElement root) {
final TypeMigrationProcessor processor = new TypeMigrationProcessor(project, root, rules) {
@Override
public void performRefactoring(final UsageInfo[] usages) {
super.performRefactoring(usages);
ApplicationManager.getApplication().invokeLater(new Runnable() {
public void run() {
final List<PsiElement> result = new ArrayList<PsiElement>();
for (UsageInfo usage : usages) {
final PsiElement element = usage.getElement();
if (element instanceof PsiMethod) {
result.add(((PsiMethod)element).getReturnTypeElement());
}
else if (element instanceof PsiVariable) {
result.add(((PsiVariable)element).getTypeElement());
}
else if (element != null) {
result.add(element);
}
}
if (editor != null) RefactoringUtil.highlightAllOccurrences(project, PsiUtilCore.toPsiElementArray(result), editor);
}
});
}
};
processor.run();
}
@NotNull
@Override
protected UsageViewDescriptor createUsageViewDescriptor(UsageInfo[] usages) {
return new TypeMigrationViewDescriptor(myRoot[0]);
}
@Override
protected boolean preprocessUsages(Ref<UsageInfo[]> refUsages) {
if (hasFailedConversions()) {
if (ApplicationManager.getApplication().isUnitTestMode()) {
throw new RuntimeException(StringUtil.join(myLabeler.getFailedConversionsReport(), "\n"));
}
FailedConversionsDialog dialog = new FailedConversionsDialog(myLabeler.getFailedConversionsReport(), myProject);
dialog.show();
if (!dialog.isOK()) {
final int exitCode = dialog.getExitCode();
prepareSuccessful();
if (exitCode == FailedConversionsDialog.VIEW_USAGES_EXIT_CODE) {
previewRefactoring(refUsages.get());
}
return false;
}
}
prepareSuccessful();
return true;
}
public boolean hasFailedConversions() {
return myLabeler.hasFailedConversions();
}
@Override
protected void previewRefactoring(final UsageInfo[] usages) {
MigrationPanel panel = new MigrationPanel(myRoot[0], myLabeler, myProject, isPreviewUsages());
String text;
if (myRoot[0] instanceof PsiField) {
text = "field \'" + ((PsiField)myRoot[0]).getName() + "\'";
}
else if (myRoot[0] instanceof PsiParameter) {
text = "parameter \'" + ((PsiParameter)myRoot[0]).getName() + "\'";
}
else if (myRoot[0] instanceof PsiLocalVariable) {
text = "variable \'" + ((PsiLocalVariable)myRoot[0]).getName() + "\'";
}
else if (myRoot[0] instanceof PsiMethod) {
text = "method \'" + ((PsiMethod)myRoot[0]).getName() + "\' return";
}
else {
text = Arrays.toString(myRoot);
}
String fromType = assertNotNull(TypeMigrationLabeler.getElementType(myRoot[0])).getPresentableText();
String toType = myRules.getMigrationRootType().getPresentableText();
String name = "Migrate Type of " + text + " from \'" + fromType + "\' to \'" + toType + "\'";
Content content = UsageViewManager.getInstance(myProject).addContent(name, false, panel, true, true);
panel.setContent(content);
ToolWindowManager.getInstance(myProject).getToolWindow(ToolWindowId.FIND).activate(null);
}
@NotNull
@Override
public UsageInfo[] findUsages() {
myLabeler = new TypeMigrationLabeler(myRules);
try {
return myLabeler.getMigratedUsages(!isPreviewUsages(), myRoot);
}
catch (TypeMigrationLabeler.MigrateException e) {
setPreviewUsages(true);
return myLabeler.getMigratedUsages(false, myRoot);
}
}
@Override
protected void refreshElements(PsiElement[] elements) {
myRoot = elements;
}
@Override
public void performRefactoring(UsageInfo[] usages) {
change(myLabeler, usages);
}
public static void change(TypeMigrationLabeler labeler, UsageInfo[] usages) {
List<UsageInfo> nonCodeUsages = new ArrayList<UsageInfo>();
for (UsageInfo usage : usages) {
if (((TypeMigrationUsageInfo)usage).isExcluded()) continue;
final PsiElement element = usage.getElement();
if (element instanceof PsiVariable ||
element instanceof PsiMember ||
element instanceof PsiExpression ||
element instanceof PsiReferenceParameterList) {
labeler.change((TypeMigrationUsageInfo)usage);
}
else {
nonCodeUsages.add(usage);
}
}
for (UsageInfo usageInfo : nonCodeUsages) {
final PsiElement element = usageInfo.getElement();
if (element != null) {
final PsiReference reference = element.getReference();
if (reference != null) {
final Object target = labeler.getConversion(element);
if (target instanceof PsiMember) {
try {
reference.bindToElement((PsiElement)target);
}
catch (IncorrectOperationException ignored) { }
}
}
}
}
}
public TypeMigrationLabeler getLabeler() {
return myLabeler;
}
@Override
protected String getCommandName() {
return "TypeMigration";
}
}
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