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