EditorService.java

package com.seventh7.mybatis.service;

import com.intellij.codeInsight.navigation.NavigationUtil;
import com.intellij.formatting.FormatTextRanges;
import com.intellij.openapi.components.ServiceManager;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.ScrollType;
import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.codeStyle.CodeStyleSettings;
import com.intellij.psi.impl.source.codeStyle.CodeFormatterFacade;

import org.jetbrains.annotations.NotNull;

/**
 * @author yanglin
 */
public class EditorService {

  private Project project;

  private FileEditorManager fileEditorManager;

  private CodeFormatterFacade codeFormatterFacade;

  public EditorService(Project project) {
    this.project = project;
    this.codeFormatterFacade = new CodeFormatterFacade(new CodeStyleSettings());
    this.fileEditorManager = FileEditorManager.getInstance(project);
  }

  public static EditorService getInstance(@NotNull Project project) {
    return ServiceManager.getService(project, EditorService.class);
  }

  public void format(@NotNull PsiFile file, @NotNull PsiElement element) {
    codeFormatterFacade.processText(file, new FormatTextRanges(element.getTextRange(), true), true);
  }

  public void scrollTo(@NotNull PsiElement element, int offset) {
    NavigationUtil.activateFileWithPsiElement(element, true);
    Editor editor = fileEditorManager.getSelectedTextEditor();
    if (null != editor) {
      editor.getCaretModel().moveToOffset(offset);
      editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
    }
  }

}