这是未经测试的代码，但是由于它紧密地重新组合了EditorsSplitters
writeExternal和writePanel函数内部的过程，因此我相信这是可行的。

提出了两种方法：

• writeExternal->的访问输出应该是更稳定的API，并且可以更轻松地访问文件信息

• 访问splitter的组件->以这种方式writeExternal创建它的信息；可悲的是，至少有一个保护场没有涉及吸气剂（window.myPanel内部findWindowWith）

  import com.intellij.openapi.actionSystem.AnAction;
  import com.intellij.openapi.actionSystem.AnActionEvent;
  import com.intellij.openapi.fileEditor.FileEditorManager;
  import com.intellij.openapi.fileEditor.impl.EditorsSplitters;
  import com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl;
  import com.intellij.openapi.project.Project;
  import com.intellij.openapi.ui.Splitter;
  import org.jdom.Element;

  import javax.swing.;
  import java.awt.;
  import java.util.ArrayList;

  public class SplitterAction extends AnAction {

  public SplitterAction() {
      super("Splitter _Action");
  }
  
  private static class Info {
  
  }
  
  private static class SplitInfo extends Info {
      public Info    first;
      public Info    second;
      public boolean vertical;
      public float   proportions;
  }
  
  private static class FileInfo extends Info {
      public String[] fileNames;
  }
  
  @Override
  public void actionPerformed(AnActionEvent anActionEvent) {
      final Project project = anActionEvent.getProject();
      final FileEditorManagerImpl fileEditorManager = (FileEditorManagerImpl) FileEditorManager.getInstance(project);
      EditorsSplitters splitters = fileEditorManager.getSplitters();
      // com.intellij.openapi.fileEditor.impl.EditorsSplitters.writeExternal() and
      // com.intellij.openapi.fileEditor.impl.EditorsSplitters#writePanel inspired this
      final Component component = splitters.getComponent(0);
      final SplitInfo infos = splitterVisitor(component);
  
      // or you could use this
      Element root = new Element("root");
      splitters.writeExternal(root);
  
      elementVisitor(root);
  
      // to restore from writeExternal the following should suffice
      splitters.readExternal(root);
      splitters.openFiles();
  }
  
  /**
   * Reads writeExternal output
   */
  private Info elementVisitor(Element root) {
      final Element splitter = root.getChild("splitter");
      if (splitter != null) {
          // see com.intellij.openapi.fileEditor.impl.EditorsSplitters#writePanel
          final SplitInfo splitInfo = new SplitInfo();
          // "vertical" or "horizontal"
          splitInfo.vertical = "vertical".equals(splitter.getAttributeValue("split-orientation"));
          splitInfo.proportions = Float.parseFloat(splitter.getAttributeValue("split-proportion"));
          Element first = splitter.getChild("split-first");
          if (first != null) {
              splitInfo.first = elementVisitor(first);
          }
          Element second = splitter.getChild("split-second");
          if (second != null) {
              splitInfo.second = elementVisitor(second);
          }
          return splitInfo;
      }
      final Element leaf = root.getChild("leaf");
      if (leaf != null) {
          final ArrayList<String> fileNames = new ArrayList<String>();
          for (Element file : leaf.getChildren("file")) {
              final String fileName = file.getAttributeValue("leaf-file-name");
              fileNames.add(fileName);
              // further attributes see com.intellij.openapi.fileEditor.impl.EditorsSplitters#writeComposite
          }
          final FileInfo fileInfo = new FileInfo();
          fileInfo.fileNames = fileNames.toArray(new String[fileNames.size()]);
          return fileInfo;
      }
      return null;
  }
  
  /**
   * Acts directly upon Component
   */
  private SplitInfo splitterVisitor(Component component) {
      if (component instanceof JPanel && ((JPanel) component).getComponentCount() > 0) {
          final Component child = ((JPanel) component).getComponent(0);
          if (child instanceof Splitter) {
              final Splitter splitter = (Splitter) child;
              final SplitInfo splitInfos = new SplitInfo();
              splitInfos.vertical = splitter.isVertical();
              splitInfos.proportions = splitter.getProportion();
              splitInfos.first = splitterVisitor(splitter.getFirstComponent());
              splitInfos.second = splitterVisitor(splitter.getSecondComponent());
              return splitInfos;
          }
          // TODO: retrieve file information
      }
      return null;
  }
  

  }