lang-impl/src/com/intellij/refactoring/actions/PushDownAction.java

   1 package com.intellij.refactoring.actions;
   2
   3 import com.intellij.lang.Language;
   4 import com.intellij.lang.LanguageRefactoringSupport;
   5 import com.intellij.lang.refactoring.RefactoringSupportProvider;
   6 import com.intellij.openapi.actionSystem.DataContext;
   7 import com.intellij.openapi.actionSystem.LangDataKeys;
   8 import com.intellij.psi.PsiElement;
   9 import com.intellij.psi.PsiFile;
  10 import com.intellij.refactoring.RefactoringActionHandler;
  11 import com.intellij.refactoring.lang.ElementsHandler;
  12
  13
  14 public class PushDownAction extends BaseRefactoringAction {
  15   public boolean isAvailableInEditorOnly() {
  16     return false;
  17   }
  18
  19   public boolean isEnabledOnElements(PsiElement[] elements) {
  20     if (elements.length > 0) {
  21       final Language language = elements[0].getLanguage();
  22       final RefactoringActionHandler handler = LanguageRefactoringSupport.INSTANCE.forLanguage(language).getPushDownHandler();
  23       return handler instanceof ElementsHandler && ((ElementsHandler)handler).isEnabledOnElements(elements);
  24     }
  25     return false;
  26   }
  27
  28   public RefactoringActionHandler getHandler(DataContext dataContext) {
  29     PsiFile file = LangDataKeys.PSI_FILE.getData(dataContext);
  30     if (file == null) return null;
  31     final RefactoringSupportProvider supportProvider = LanguageRefactoringSupport.INSTANCE.forLanguage(file.getViewProvider().getBaseLanguage());
  32     return supportProvider != null ? supportProvider.getPushDownHandler() : null;
  33   }
  34
  35   protected boolean isAvailableForLanguage(final Language language) {
  36     return LanguageRefactoringSupport.INSTANCE.forLanguage(language).getPushDownHandler() != null;
  37   }
  38 }