/*
 * 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.psi.codeStyle.autodetect;

import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.extensions.Extensions;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiFile;
import com.intellij.psi.codeStyle.CodeStyleSettings;
import com.intellij.psi.codeStyle.CommonCodeStyleSettings;
import com.intellij.psi.codeStyle.FileIndentOptionsProvider;
import com.intellij.testFramework.LightVirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.annotations.TestOnly;

/**
 * @author Rustam Vishnyakov
 */
public class DetectableIndentOptionsProvider extends FileIndentOptionsProvider {
  private boolean myIsEnabledInTest;

  @Nullable
  @Override
  public CommonCodeStyleSettings.IndentOptions getIndentOptions(@NotNull CodeStyleSettings settings, @NotNull PsiFile file) {
    return isEnabled(settings, file) ? new IndentOptionsDetectorImpl(file).getIndentOptions() : null;
  }

  @Override
  public boolean useOnFullReformat() {
    return false;
  }

  @TestOnly
  public void setEnabledInTest(boolean isEnabledInTest) {
    myIsEnabledInTest = isEnabledInTest;
  }

  private boolean isEnabled(@NotNull CodeStyleSettings settings, @NotNull PsiFile file) {
    if (ApplicationManager.getApplication().isUnitTestMode()) {
      return myIsEnabledInTest;
    }
    VirtualFile vFile = file.getVirtualFile();
    if (vFile == null || vFile instanceof LightVirtualFile) return false;
    return settings.AUTODETECT_INDENTS;
  }

  @TestOnly
  @Nullable
  public static DetectableIndentOptionsProvider getInstance() {
    FileIndentOptionsProvider[] providers = Extensions.getExtensions(FileIndentOptionsProvider.EP_NAME);
    for (FileIndentOptionsProvider provider : providers) {
      if (provider instanceof DetectableIndentOptionsProvider) return (DetectableIndentOptionsProvider)provider;
    }
    return null;
  }
}

/*
 * 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.psi.codeStyle.autodetect;

import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.extensions.Extensions;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiFile;
import com.intellij.psi.codeStyle.CodeStyleSettings;
import com.intellij.psi.codeStyle.CommonCodeStyleSettings;
import com.intellij.psi.codeStyle.FileIndentOptionsProvider;
import com.intellij.testFramework.LightVirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.annotations.TestOnly;

/**
 * @author Rustam Vishnyakov
 */
public class DetectableIndentOptionsProvider extends FileIndentOptionsProvider {
  private boolean myIsEnabledInTest;

  @Nullable
  @Override
  public CommonCodeStyleSettings.IndentOptions getIndentOptions(@NotNull CodeStyleSettings settings, @NotNull PsiFile file) {
    return isEnabled(settings, file) ? new IndentOptionsDetectorImpl(file).getIndentOptions() : null;
  }

  @Override
  public boolean useOnFullReformat() {
    return false;
  }

  @TestOnly
  public void setEnabledInTest(boolean isEnabledInTest) {
    myIsEnabledInTest = isEnabledInTest;
  }

  private boolean isEnabled(@NotNull CodeStyleSettings settings, @NotNull PsiFile file) {
    if (ApplicationManager.getApplication().isUnitTestMode()) {
      return myIsEnabledInTest;
    }
    VirtualFile vFile = file.getVirtualFile();
    if (vFile == null || vFile instanceof LightVirtualFile) return false;
    return settings.AUTODETECT_INDENTS;
  }

  @TestOnly
  @Nullable
  public static DetectableIndentOptionsProvider getInstance() {
    return FileIndentOptionsProvider.EP_NAME.findExtension(DetectableIndentOptionsProvider.class);
  }
}

use EP_NAME.findExtension [CR-IC-6398]