plugins/properties/src/com/intellij/lang/properties/refactoring/PropertiesSafeDeleteProcessor.java

/*
 * 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.lang.properties.refactoring;

import com.intellij.lang.properties.IProperty;
import com.intellij.lang.properties.psi.PropertiesFile;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.refactoring.RefactoringSettings;
import com.intellij.refactoring.safeDelete.NonCodeUsageSearchInfo;
import com.intellij.refactoring.safeDelete.SafeDeleteProcessor;
import com.intellij.refactoring.safeDelete.SafeDeleteProcessorDelegate;
import com.intellij.usageView.UsageInfo;
import com.intellij.util.IncorrectOperationException;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

/**
 * @author yole
 */
public class PropertiesSafeDeleteProcessor implements SafeDeleteProcessorDelegate {
  public boolean handlesElement(final PsiElement element) {
    return element instanceof PropertiesFile;
  }

  public NonCodeUsageSearchInfo findUsages(final PsiElement element, final PsiElement[] allElementsToDelete, final List<UsageInfo> result) {
    PropertiesFile file = (PropertiesFile) element;
    List<PsiElement> elements = new ArrayList<PsiElement>();
    elements.add(file.getContainingFile());
    for (IProperty property : file.getProperties()) {
      elements.add(property.getPsiElement());
    }
    for(PsiElement psiElement: elements) {
      SafeDeleteProcessor.findGenericElementUsages(psiElement, result, allElementsToDelete);
    }
    return new NonCodeUsageSearchInfo(SafeDeleteProcessor.getDefaultInsideDeletedCondition(allElementsToDelete), elements);
  }

  public Collection<PsiElement> getElementsToSearch(final PsiElement element, final Collection<PsiElement> allElementsToDelete) {
    return Collections.singletonList(element);
  }

  public Collection<PsiElement> getAdditionalElementsToDelete(final PsiElement element, final Collection<PsiElement> allElementsToDelete,
                                                              final boolean askUser) {
    return null;
  }

  public Collection<String> findConflicts(final PsiElement element, final PsiElement[] allElementsToDelete) {
    return null;
  }

  public UsageInfo[] preprocessUsages(final Project project, final UsageInfo[] usages) {
    return usages;
  }

  public void prepareForDeletion(final PsiElement element) throws IncorrectOperationException {
  }

  @Override
  public boolean isToSearchInComments(PsiElement element) {
    return RefactoringSettings.getInstance().SAFE_DELETE_SEARCH_IN_COMMENTS;
  }

  @Override
  public boolean isToSearchForTextOccurrences(PsiElement element) {
    return RefactoringSettings.getInstance().SAFE_DELETE_SEARCH_IN_NON_JAVA;
  }

  @Override
  public void setToSearchInComments(PsiElement element, boolean enabled) {
    RefactoringSettings.getInstance().SAFE_DELETE_SEARCH_IN_COMMENTS = enabled;
  }

  @Override
  public void setToSearchForTextOccurrences(PsiElement element, boolean enabled) {
    RefactoringSettings.getInstance().SAFE_DELETE_SEARCH_IN_NON_JAVA = enabled;
  }
}