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path: root/platform/lang-impl/src/com/intellij/formatting/FormatterEx.java
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/*
 * 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.formatting;

import com.intellij.openapi.application.Application;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.fileTypes.FileType;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.codeStyle.CodeStyleSettings;
import com.intellij.psi.codeStyle.CommonCodeStyleSettings;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public abstract class FormatterEx{

  private static FormatterEx myTestInstance;

  public static FormatterEx getInstance() {
    final Application application = ApplicationManager.getApplication();
    if (application != null) {
      return application.getComponent(FormatterEx.class);
    }
    else {
      return getTestInstance();
    }
  }


  private static FormatterEx getTestInstance() {
    if (myTestInstance == null) {
      try {
        myTestInstance = (FormatterEx)Class.forName("com.intellij.formatting.FormatterImpl").newInstance();
      }
      catch (Exception e) {
        throw new RuntimeException(e);
      }
    }
    return myTestInstance;
  }

  public abstract void format(FormattingModel model,
                              CodeStyleSettings settings,
                              CommonCodeStyleSettings.IndentOptions indentOptions,
                              FormatTextRanges affectedRanges) throws IncorrectOperationException;

  public abstract void format(FormattingModel model,
                              CodeStyleSettings settings,
                              CommonCodeStyleSettings.IndentOptions indentOptions,
                              CommonCodeStyleSettings.IndentOptions javaIndentOptions,
                              FormatTextRanges affectedRanges) throws IncorrectOperationException;


  public abstract IndentInfo getWhiteSpaceBefore(final FormattingDocumentModel psiBasedFormattingModel,
                                                 final Block block,
                                                 final CodeStyleSettings settings,
                                                 final CommonCodeStyleSettings.IndentOptions indentOptions,
                                                 final TextRange textRange, final boolean mayChangeLineFeeds);

  public abstract int adjustLineIndent(final FormattingModel psiBasedFormattingModel,
                                       final CodeStyleSettings settings,
                                       final CommonCodeStyleSettings.IndentOptions indentOptions,
                                       final int offset,
                                       final TextRange affectedRange) throws IncorrectOperationException;

  @Nullable
  public abstract String getLineIndent(final FormattingModel psiBasedFormattingModel,
                                       final CodeStyleSettings settings,
                                       final CommonCodeStyleSettings.IndentOptions indentOptions,
                                       final int offset,
                                       final TextRange affectedRange);

  public abstract void adjustTextRange(final FormattingModel documentModel,
                                       final CodeStyleSettings settings,
                                       final CommonCodeStyleSettings.IndentOptions indentOptions,
                                       final TextRange textRange,
                                       final boolean keepBlankLines,
                                       final boolean keepLineBreaks,
                                       final boolean changeWSBeforeFirstElement,
                                       final boolean changeLineFeedsBeforeFirstElement, final IndentInfoStorage indentInfoStorage);

  public abstract void saveIndents(final FormattingModel model, final TextRange affectedRange,
                                   IndentInfoStorage storage,
                                   final CodeStyleSettings settings,
                                   final CommonCodeStyleSettings.IndentOptions indentOptions);

  public abstract boolean isDisabled();



  public abstract void adjustLineIndentsForRange(final FormattingModel model,
                                                 final CodeStyleSettings settings,
                                                 final CommonCodeStyleSettings.IndentOptions indentOptions,
                                                 final TextRange rangeToAdjust);

  public abstract void formatAroundRange(final FormattingModel model, final CodeStyleSettings settings,
                                         final TextRange textRange, final FileType fileType);

  public abstract void adjustTextRange(FormattingModel model,
                                       CodeStyleSettings settings,
                                       CommonCodeStyleSettings.IndentOptions indentOptions,
                                       TextRange affectedRange);

  public abstract void setProgressTask(@NotNull FormattingProgressTask progressIndicator);
  
  public interface IndentInfoStorage {
    void saveIndentInfo(@Nullable IndentInfo info, int startOffset);

    IndentInfo getIndentInfo(int startOffset);
  }

  public static FormatterEx getInstanceEx() {
    return getInstance();
  }

}