java/java-impl/src/com/intellij/codeInsight/completion/ExpressionSmartCompletionContributor.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.codeInsight.completion;
  17
  18 import com.intellij.openapi.util.Pair;
  19 import com.intellij.patterns.ElementPattern;
  20 import com.intellij.psi.PsiElement;
  21 import com.intellij.util.ProcessingContext;
  22
  23 import java.util.ArrayList;
  24 import java.util.List;
  25
  26 /**
  27  * @author peter
  28  */
  29 public abstract class ExpressionSmartCompletionContributor extends AbstractCompletionContributor<JavaSmartCompletionParameters> {
  30   public static final ExpressionSmartCompletionContributor[] CONTRIBUTORS = {new BasicExpressionCompletionContributor()};
  31
  32   private final List<Pair<ElementPattern<? extends PsiElement>, CompletionProvider<JavaSmartCompletionParameters>>> myList =
  33       new ArrayList<Pair<ElementPattern<? extends PsiElement>, CompletionProvider<JavaSmartCompletionParameters>>>();
  34
  35   public final void extend(final ElementPattern<? extends PsiElement> place, CompletionProvider<JavaSmartCompletionParameters> provider) {
  36     myList.add(new Pair<ElementPattern<? extends PsiElement>, CompletionProvider<JavaSmartCompletionParameters>>(place, provider));
  37   }
  38
  39   public void fillCompletionVariants(final JavaSmartCompletionParameters parameters, CompletionResultSet result) {
  40     for (final Pair<ElementPattern<? extends PsiElement>, CompletionProvider<JavaSmartCompletionParameters>> pair : myList) {
  41       final ProcessingContext context = new ProcessingContext();
  42       if (isPatternSuitable(pair.first, parameters, context)) {
  43         pair.second.addCompletionVariants(parameters, context, result);
  44       }
  45     }
  46   }
  47
  48 }