com.intellij.psi.ElementManipulators#getManipulator ( )源码实例Demo

@Nullable
protected Pair<PsiElement, TextRange> getRangePair(final PsiFile file, final Editor editor) {
  final int offset = editor.getCaretModel().getOffset();
  final PsiLanguageInjectionHost host =
          PsiTreeUtil.getParentOfType(file.findElementAt(offset), PsiLanguageInjectionHost.class, false);
  if (host == null || ElementManipulators.getManipulator(host) == null) return null;
  final List<Pair<PsiElement, TextRange>> injections = InjectedLanguageManager.getInstance(host.getProject()).getInjectedPsiFiles(host);
  if (injections == null || injections.isEmpty()) return null;
  final int offsetInElement = offset - host.getTextRange().getStartOffset();
  final Pair<PsiElement, TextRange> rangePair = ContainerUtil.find(injections, new Condition<Pair<PsiElement, TextRange>>() {
    @Override
    public boolean value(final Pair<PsiElement, TextRange> pair) {
      return pair.second.containsRange(offsetInElement, offsetInElement);
    }
  });
  if (rangePair != null) {
    final Language language = rangePair.first.getContainingFile().getLanguage();
    final Object action = language.getUserData(EDIT_ACTION_AVAILABLE);
    if (action != null && action.equals(false)) return null;

    myLastLanguageName = language.getDisplayName();
  }
  return rangePair;
}
 

@NotNull
private ElementManipulator<AbstractBashCommand<?>> getManipulator() {
    ElementManipulator<AbstractBashCommand<?>> manipulator = ElementManipulators.<AbstractBashCommand<?>>getManipulator(cmd);
    if (manipulator == null) {
        throw new IncorrectOperationException("No element manipulator found for " + cmd);
    }

    return manipulator;
}
 

@NotNull
private ElementManipulator<AbstractBashCommand<?>> getManipulator() {
    ElementManipulator<AbstractBashCommand<?>> manipulator = ElementManipulators.<AbstractBashCommand<?>>getManipulator(cmd);
    if (manipulator == null) {
        throw new IncorrectOperationException("No element manipulator found for " + cmd);
    }
    return manipulator;
}
 

@Nonnull
public static <T extends PsiElement> ElementManipulator<T> getManipulator(T currentElement){
  ElementManipulator<T> manipulator = ElementManipulators.getManipulator(currentElement);
  if (manipulator == null) {
    throw new IncorrectOperationException("Manipulator for this element is not defined: " + currentElement + "; " + currentElement.getClass());
  }
  return manipulator;
}
 

@Override
public PsiElement handleElementRename(@NotNull String newElementName) throws IncorrectOperationException {
    ElementManipulator<PsiElement> manipulator = ElementManipulators.getManipulator(myElement);
    return manipulator.handleContentChange(myElement, TextRange.from(1, id.length()), newElementName);
}
 

@Override
public PsiElement handleElementRename(@NotNull String newElementName) throws IncorrectOperationException {
    ElementManipulator<PsiElement> manipulator = ElementManipulators.getManipulator(myElement);
    return manipulator.handleContentChange(myElement, endpoint.getNameTextRange().shiftRight(1), newElementName);
}
 

@Override
public PsiElement handleElementRename(@NotNull String newElementName) throws IncorrectOperationException {
    ElementManipulator<PsiElement> manipulator = ElementManipulators.getManipulator(myElement);
    return manipulator.handleContentChange(myElement, endpoint.getNameTextRange().shiftRight(1), newElementName);
}