com.intellij.psi.PsiDocumentManager#getInstance ( )源码实例Demo

@Override
public void insert(List<String> items) {
    PsiDocumentManager manager = PsiDocumentManager.getInstance(serviceKeyValue.getProject());
    Document document = manager.getDocument(serviceKeyValue.getContainingFile());
    if (document == null) {
        return;
    }

    List<String> arrayList = new ArrayList<>();
    for (String item : items) {
        arrayList.add("'@" + (StringUtils.isNotBlank(item) ? item : "?") + "'");
    }

    YamlHelper.putKeyValue(serviceKeyValue, "arguments", "[" + StringUtils.join(arrayList, ", ") + "]");

    manager.doPostponedOperationsAndUnblockDocument(document);
    manager.commitDocument(document);
}
 

static void indentBlock(Project project, Editor editor, final int startOffset, final int endOffset, int originalCaretCol) {
  final PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project);
  documentManager.commitAllDocuments();
  final Document document = editor.getDocument();
  PsiFile file = documentManager.getPsiFile(document);
  if (file == null) {
    return;
  }

  if (LanguageFormatting.INSTANCE.forContext(file) != null) {
    indentBlockWithFormatter(project, document, startOffset, endOffset, file);
  }
  else {
    indentPlainTextBlock(document, startOffset, endOffset, originalCaretCol);
  }
}
 

@RequiredReadAction
private Collection<FoldingDescriptor> getCustomFoldingDescriptors() {
  Set<FoldingDescriptor> foldingDescriptors = new HashSet<FoldingDescriptor>();
  final Document document = myEditor.getDocument();
  PsiDocumentManager documentManager = PsiDocumentManager.getInstance(myProject);
  PsiFile file = documentManager != null ? documentManager.getPsiFile(document) : null;
  if (file != null) {
    final FileViewProvider viewProvider = file.getViewProvider();
    for (final Language language : viewProvider.getLanguages()) {
      final PsiFile psi = viewProvider.getPsi(language);
      final FoldingBuilder foldingBuilder = LanguageFolding.INSTANCE.forLanguage(language);
      if (psi != null) {
        for (FoldingDescriptor descriptor : LanguageFolding.buildFoldingDescriptors(foldingBuilder, psi, document, false)) {
          CustomFoldingBuilder customFoldingBuilder = getCustomFoldingBuilder(foldingBuilder, descriptor);
          if (customFoldingBuilder != null) {
            if (customFoldingBuilder.isCustomRegionStart(descriptor.getElement())) {
              foldingDescriptors.add(descriptor);
            }
          }
        }
      }
    }
  }
  return foldingDescriptors;
}
 

@Override
protected PsiFile doReformat(final Project project, final PsiFile psiFile) {
  final String text = psiFile.getText();
  final PsiDocumentManager manager = PsiDocumentManager.getInstance(project);
  final Document doc = manager.getDocument(psiFile);
  CommandProcessor.getInstance().executeCommand(project, () -> ApplicationManager.getApplication().runWriteAction(() -> {
    if (doc != null) {
      doc.replaceString(0, doc.getTextLength(), text);
      manager.commitDocument(doc);
    }
    try {
      CodeStyleManager.getInstance(project).reformat(psiFile);
    }
    catch (IncorrectOperationException e) {
      LOG.error(e);
    }
  }), "", "");
  if (doc != null) {
    manager.commitDocument(doc);
  }
  return psiFile;
}
 

private void formatInternal(PsiFile file, Collection<TextRange> ranges) {
  ApplicationManager.getApplication().assertWriteAccessAllowed();
  PsiDocumentManager documentManager = PsiDocumentManager.getInstance(getProject());
  documentManager.commitAllDocuments();
  CheckUtil.checkWritable(file);

  Document document = documentManager.getDocument(file);

  if (document == null) {
    return;
  }
  // If there are postponed PSI changes (e.g., during a refactoring), just abort.
  // If we apply them now, then the incoming text ranges may no longer be valid.
  if (documentManager.isDocumentBlockedByPsi(document)) {
    return;
  }

  format(file, document, ranges);
}
 

@Override
public void runActivity(@NotNull Project project) {
    if (!ApplicationManager.getApplication().isHeadlessEnvironment()) {
        final EditorEventMulticaster eventMulticaster = EditorFactory.getInstance().getEventMulticaster();
        final PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(project);
        eventMulticaster.addCaretListener(new CaretListener() {
            @Override
            public void caretPositionChanged(CaretEvent e) {
                final PsiFile psiFile = psiDocumentManager.getPsiFile(e.getEditor().getDocument());
                if (psiFile instanceof GraphQLFile) {
                    int offset = e.getEditor().logicalPositionToOffset(e.getNewPosition());
                    psiFile.putUserData(CARET_OFFSET, offset);
                }
            }
        }, project);
    }
}
 

private static void validateModel(FormattingModel model) throws FormattingModelInconsistencyException {
  FormattingDocumentModel documentModel = model.getDocumentModel();
  Document document = documentModel.getDocument();
  Block rootBlock = model.getRootBlock();
  if (rootBlock instanceof ASTBlock) {
    PsiElement rootElement = ((ASTBlock)rootBlock).getNode().getPsi();
    if (!rootElement.isValid()) {
      throw new FormattingModelInconsistencyException("Invalid root block PSI element");
    }
    PsiFile file = rootElement.getContainingFile();
    Project project = file.getProject();
    PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project);
    if (documentManager.isUncommited(document)) {
      throw new FormattingModelInconsistencyException("Uncommitted document");
    }
    if (document.getTextLength() != file.getTextLength()) {
      throw new FormattingModelInconsistencyException("Document length " + document.getTextLength() + " doesn't match PSI file length " + file.getTextLength() + ", language: " + file.getLanguage());
    }
  }
}
 

/**
 * 全文替换
 *
 * @param project  the project
 * @param document the document
 * @param string   the string
 */
public static void commitAndSaveDocument(Project project, Document document, String string) {
    if (document != null) {
        PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(project);
        WriteCommandAction.runWriteCommandAction(project, () -> {
            document.setText(string);
            psiDocumentManager.doPostponedOperationsAndUnblockDocument(document);
            psiDocumentManager.commitDocument(document);
            FileDocumentManager.getInstance().saveDocument(document);
        });
    }
}
 

@Override
public void actionPerformed(@NotNull AnActionEvent event) {
  final Project project = event.getProject();
  if (project == null) {
    return;
  }

  PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(project);
  if (psiDocumentManager.hasUncommitedDocuments()) {
    psiDocumentManager.commitAllDocuments();
  }

  final DataContext dataContext = event.getDataContext();
  final Editor editor = PlatformDataKeys.EDITOR.getData(dataContext);

  if (null != editor) {
    final PsiFile psiFile = PsiUtilBase.getPsiFileInEditor(editor, project);
    if (null != psiFile) {
      final PsiClass targetClass = getTargetClass(editor, psiFile);
      if (null != targetClass) {
        process(project, psiFile, targetClass);
      }
    }
  } else {
    final VirtualFile[] files = PlatformDataKeys.VIRTUAL_FILE_ARRAY.getData(dataContext);
    if (null != files) {
      for (VirtualFile file : files) {
        if (file.isDirectory()) {
          processDirectory(project, file);
        } else {
          processFile(project, file);
        }
      }
    }
  }
}
 

private void reinitDocumentIndentOptions() {
  if (myEditor == null || myEditor.isViewer()) return;
  final Project project = myEditor.getProject();
  final DocumentEx document = myEditor.getDocument();

  if (project == null || project.isDisposed()) return;

  final PsiDocumentManager psiManager = PsiDocumentManager.getInstance(project);
  final PsiFile file = psiManager.getPsiFile(document);
  if (file == null) return;

  CodeStyleSettingsManager.updateDocumentIndentOptions(project, document);
}
 

@Override
public void invoke(@NotNull final Project project, @NotNull final Editor editor, @NotNull final PsiFile file) {
    final PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(project);
    final Document currentDocument = psiDocumentManager.getDocument(file);
    if (currentDocument == null) {
        return;
    }

    psiDocumentManager.commitDocument(currentDocument);

    if (!CodeInsightUtilBase.prepareEditorForWrite(editor)) {
        return;
    }

    if (!FileDocumentManager.getInstance().requestWriting(editor.getDocument(), project)) {
        return;
    }

    final List<PsiFieldMember> existingFields = collectFields(file, editor);
    if (existingFields != null) {
        final List<PsiFieldMember> selectedFields = selectFieldsAndOptions(existingFields, project);

        if (selectedFields == null || selectedFields.isEmpty()) {
            return;
        }

        InnerBuilderGenerator.generate(project, editor, file, selectedFields);
    }
}
 

public static void scheduleIndentAdjustment(@Nonnull Project myProject, @Nonnull Document myDocument, int myOffset) {
  IndentAdjusterRunnable fixer = new IndentAdjusterRunnable(myProject, myDocument, myOffset);
  PsiDocumentManager documentManager = PsiDocumentManager.getInstance(myProject);
  if (isSynchronousAdjustment(myDocument)) {
    documentManager.commitDocument(myDocument);
    fixer.run();
  }
  else {
    documentManager.performLaterWhenAllCommitted(fixer);
  }
}
 

@RequiredUIAccess
@Override
public void actionPerformed(@Nonnull AnActionEvent e) {
  final Project project = e.getProject();
  if (project == null) {
    return;
  }

  final Editor editor = e.getData(CommonDataKeys.EDITOR);
  if (editor == null) {
    return;
  }

  PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project);
  Document document = editor.getDocument();
  documentManager.commitDocument(document);

  final PsiFile file = documentManager.getPsiFile(document);
  if (file == null) {
    return;
  }

  SelectionModel model = editor.getSelectionModel();
  if (model.hasSelection()) {
    new RearrangeCodeProcessor(file, model).run();
  }
  else {
    new RearrangeCodeProcessor(file).run();
  }
}
 

@RequiredUIAccess
@Override
protected void setUp() throws Exception {
  super.setUp();
  documentManager = (PsiDocumentManagerImpl)PsiDocumentManager.getInstance(getProject());
  synchronizer = documentManager.getSynchronizer();
}
 

@RequiredUIAccess
public static Editor getInjectedEditor(@Nonnull Project project, final Editor editor, boolean commit) {
  Editor injectedEditor = editor;
  if (editor != null) {
    PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project);
    PsiFile psiFile = documentManager.getCachedPsiFile(editor.getDocument());
    if (psiFile != null) {
      if (commit) documentManager.commitAllDocuments();
      injectedEditor = InjectedLanguageUtil.getEditorForInjectedLanguageNoCommit(editor, psiFile);
    }
  }
  return injectedEditor;
}
 

/**
 * Builds a new instance of {@link AppendFileCommandAction}.
 * Takes a {@link Set} of the rules to add.
 *
 * @param project          current project
 * @param file             working file
 * @param content          rule
 * @param ignoreDuplicates ignore duplicated entries
 * @param ignoreComments   ignore comments and empty lines
 */
public AppendFileCommandAction(@NotNull Project project, @NotNull PsiFile file, @NotNull Set<String> content,
                               boolean ignoreDuplicates, boolean ignoreComments) {
    super(project);
    this.project = project;
    this.file = file;
    this.content = content;
    this.manager = PsiDocumentManager.getInstance(project);
    this.ignoreDuplicates = ignoreDuplicates;
    this.ignoreComments = ignoreComments;
    this.insertAtCursor = IgnoreSettings.getInstance().isInsertAtCursor();
}
 

private static InjectionResult doCompute(@Nonnull PsiFile containingFile, @Nonnull Project project, @Nonnull PsiElement anchor, @Nonnull PsiElement[] operands) {
  PsiDocumentManager docManager = PsiDocumentManager.getInstance(project);
  InjectionRegistrarImpl registrar = new InjectionRegistrarImpl(project, containingFile, anchor, docManager);
  InjectionResult result = null;
  ConcatenationInjectorManager concatenationInjectorManager = getInstance(project);
  for (ConcatenationAwareInjector concatenationInjector : concatenationInjectorManager.myConcatenationInjectors) {
    concatenationInjector.inject(registrar, operands);
    result = registrar.getInjectedResult();
    if (result != null) break;
  }

  return result;
}
 

public PerformFixesModalTask(@Nonnull Project project,
                             @Nonnull CommonProblemDescriptor[] descriptors,
                             @Nonnull SequentialModalProgressTask task) {
  myProject = project;
  myDescriptors = descriptors;
  myTask = task;
  myDocumentManager = PsiDocumentManager.getInstance(myProject);
}
 

static void assertCommitSuccessful(Editor editor, PsiFile psiFile) {
  Document document = editor.getDocument();
  int docLength = document.getTextLength();
  int psiLength = psiFile.getTextLength();
  PsiDocumentManager manager = PsiDocumentManager.getInstance(psiFile.getProject());
  boolean committed = !manager.isUncommited(document);
  if (docLength == psiLength && committed) {
    return;
  }

  FileViewProvider viewProvider = psiFile.getViewProvider();

  String message = "unsuccessful commit:";
  message += "\nmatching=" + (psiFile == manager.getPsiFile(document));
  message += "\ninjectedEditor=" + (editor instanceof EditorWindow);
  message += "\ninjectedFile=" + InjectedLanguageManager.getInstance(psiFile.getProject()).isInjectedFragment(psiFile);
  message += "\ncommitted=" + committed;
  message += "\nfile=" + psiFile.getName();
  message += "\nfile class=" + psiFile.getClass();
  message += "\nfile.valid=" + psiFile.isValid();
  message += "\nfile.physical=" + psiFile.isPhysical();
  message += "\nfile.eventSystemEnabled=" + viewProvider.isEventSystemEnabled();
  message += "\nlanguage=" + psiFile.getLanguage();
  message += "\ndoc.length=" + docLength;
  message += "\npsiFile.length=" + psiLength;
  String fileText = psiFile.getText();
  if (fileText != null) {
    message += "\npsiFile.text.length=" + fileText.length();
  }
  FileASTNode node = psiFile.getNode();
  if (node != null) {
    message += "\nnode.length=" + node.getTextLength();
    String nodeText = node.getText();
    message += "\nnode.text.length=" + nodeText.length();
  }
  VirtualFile virtualFile = viewProvider.getVirtualFile();
  message += "\nvirtualFile=" + virtualFile;
  message += "\nvirtualFile.class=" + virtualFile.getClass();
  message += "\n" + DebugUtil.currentStackTrace();

  throw new RuntimeExceptionWithAttachments("Commit unsuccessful", message, new Attachment(virtualFile.getPath() + "_file.txt", StringUtil.notNullize(fileText)), createAstAttachment(psiFile, psiFile),
                                            new Attachment("docText.txt", document.getText()));
}
 

public static boolean canUseDocumentModel(@Nonnull Document document, @Nonnull PsiFile file) {
  PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(file.getProject());
  return !psiDocumentManager.isUncommited(document) &&
         !psiDocumentManager.isDocumentBlockedByPsi(document) &&
         file.getText().equals(document.getText());
}