/*
* Copyright 2000-2009 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.ide.hierarchy.method;
import com.intellij.codeInsight.generation.OverrideImplementUtil;
import com.intellij.ide.hierarchy.HierarchyNodeDescriptor;
import com.intellij.ide.hierarchy.MethodHierarchyBrowserBase;
import com.intellij.openapi.actionSystem.*;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.command.CommandProcessor;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.Messages;
import com.intellij.openapi.vfs.ReadonlyStatusHandler;
import com.intellij.openapi.vfs.VfsUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.wm.ToolWindowManager;
import com.intellij.psi.*;
import com.intellij.psi.util.MethodSignature;
import com.intellij.util.IncorrectOperationException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
abstract class OverrideImplementMethodAction extends AnAction {
private static final Logger LOG = Logger.getInstance("#com.intellij.ide.hierarchy.method.OverrideImplementMethodAction");
public final void actionPerformed(final AnActionEvent event) {
final DataContext dataContext = event.getDataContext();
final MethodHierarchyBrowser methodHierarchyBrowser = (MethodHierarchyBrowser)MethodHierarchyBrowserBase.DATA_KEY.getData(dataContext);
if (methodHierarchyBrowser == null) return;
final Project project = CommonDataKeys.PROJECT.getData(dataContext);
if (project == null) return;
final String commandName = event.getPresentation().getText();
ApplicationManager.getApplication().runWriteAction(() -> CommandProcessor.getInstance().executeCommand(project, () -> {
try{
final HierarchyNodeDescriptor[] selectedDescriptors = methodHierarchyBrowser.getSelectedDescriptors();
if (selectedDescriptors.length > 0) {
final List<VirtualFile> files = new ArrayList<>(selectedDescriptors.length);
for (HierarchyNodeDescriptor selectedDescriptor : selectedDescriptors) {
final PsiFile containingFile = ((MethodHierarchyNodeDescriptor)selectedDescriptor).getPsiClass().getContainingFile();
if (containingFile != null) {
final VirtualFile vFile = containingFile.getVirtualFile();
if (vFile != null) {
files.add(vFile);
}
}
}
final ReadonlyStatusHandler.OperationStatus status = ReadonlyStatusHandler.getInstance(project).ensureFilesWritable(VfsUtil.toVirtualFileArray(files));
if (!status.hasReadonlyFiles()) {
for (HierarchyNodeDescriptor selectedDescriptor : selectedDescriptors) {
final PsiElement aClass = ((MethodHierarchyNodeDescriptor)selectedDescriptor).getPsiClass();
if (aClass instanceof PsiClass) {
OverrideImplementUtil.overrideOrImplement((PsiClass)aClass, methodHierarchyBrowser.getBaseMethod());
}
}
ToolWindowManager.getInstance(project).activateEditorComponent();
}
else {
ApplicationManager.getApplication().invokeLater(
() -> Messages.showErrorDialog(project, status.getReadonlyFilesMessage(), commandName));
}
}
}
catch(IncorrectOperationException e){
LOG.error(e);
}
}, commandName, null));
}
public final void update(final AnActionEvent e) {
final Presentation presentation = e.getPresentation();
final DataContext dataContext = e.getDataContext();
final MethodHierarchyBrowser methodHierarchyBrowser = (MethodHierarchyBrowser)MethodHierarchyBrowserBase.DATA_KEY.getData(dataContext);
if (methodHierarchyBrowser == null) {
presentation.setEnabled(false);
presentation.setVisible(false);
return;
}
final Project project = CommonDataKeys.PROJECT.getData(dataContext);
if (project == null) {
presentation.setEnabled(false);
presentation.setVisible(false);
return;
}
final HierarchyNodeDescriptor[] selectedDescriptors = methodHierarchyBrowser.getSelectedDescriptors();
int toImplement = 0;
int toOverride = 0;
for (final HierarchyNodeDescriptor descriptor : selectedDescriptors) {
if (canImplementOverride((MethodHierarchyNodeDescriptor)descriptor, methodHierarchyBrowser, true)) {
if (toOverride > 0) {
// no mixed actions allowed
presentation.setEnabled(false);
presentation.setVisible(false);
return;
}
toImplement++;
}
else if (canImplementOverride((MethodHierarchyNodeDescriptor)descriptor, methodHierarchyBrowser, false)) {
if (toImplement > 0) {
// no mixed actions allowed
presentation.setEnabled(false);
presentation.setVisible(false);
return;
}
toOverride++;
}
else {
// no action is applicable to this node
presentation.setEnabled(false);
presentation.setVisible(false);
return;
}
}
presentation.setVisible(true);
update(presentation, toImplement, toOverride);
}
protected abstract void update(Presentation presentation, int toImplement, int toOverride);
private static boolean canImplementOverride(final MethodHierarchyNodeDescriptor descriptor, final MethodHierarchyBrowser methodHierarchyBrowser, final boolean toImplement) {
final PsiElement psiElement = descriptor.getPsiClass();
if (!(psiElement instanceof PsiClass)) return false;
final PsiClass psiClass = (PsiClass)psiElement;
if (psiClass instanceof PsiSyntheticClass) return false;
final PsiMethod baseMethod = methodHierarchyBrowser.getBaseMethod();
if (baseMethod == null) return false;
final MethodSignature signature = baseMethod.getSignature(PsiSubstitutor.EMPTY);
Collection<MethodSignature> allOriginalSignatures = toImplement
? OverrideImplementUtil.getMethodSignaturesToImplement(psiClass)
: OverrideImplementUtil.getMethodSignaturesToOverride(psiClass);
for (final MethodSignature originalSignature : allOriginalSignatures) {
if (originalSignature.equals(signature)) {
return true;
}
}
return false;
}
}