lang-impl/src/com/intellij/refactoring/classMembers/MemberInfoTooltipManager.java

   1 package com.intellij.refactoring.classMembers;
   2
   3 import com.intellij.psi.PsiElement;
   4 import com.intellij.util.containers.HashMap;
   5
   6 /**
   7  * @author dsl
   8  */
   9 public class MemberInfoTooltipManager<T extends PsiElement, M extends MemberInfoBase<T>> {
  10   private final HashMap<M, String> myTooltips = new HashMap<M, String>();
  11   private final TooltipProvider<T, M> myProvider;
  12
  13   public interface TooltipProvider<T extends PsiElement, M extends MemberInfoBase<T>> {
  14     String getTooltip(M memberInfo);
  15   }
  16
  17   public MemberInfoTooltipManager(TooltipProvider<T, M> provider) {
  18     myProvider = provider;
  19   }
  20
  21   public void invalidate() {
  22     myTooltips.clear();
  23   }
  24
  25   public String getTooltip(M member) {
  26     if(myTooltips.keySet().contains(member)) {
  27       return myTooltips.get(member);
  28     }
  29     String tooltip = myProvider.getTooltip(member);
  30     myTooltips.put(member, tooltip);
  31     return tooltip;
  32   }
  33 }