java/java-impl/src/com/intellij/codeInsight/completion/JavaMemberNameCompletionContributor.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.codeInsight.lookup.AutoCompletionPolicy;
  19 import com.intellij.codeInsight.lookup.LookupElement;
  20 import com.intellij.codeInsight.lookup.LookupItem;
  21 import com.intellij.openapi.application.ApplicationManager;
  22 import com.intellij.patterns.ElementPattern;
  23 import static com.intellij.patterns.PlatformPatterns.psiElement;
  24 import com.intellij.patterns.PsiJavaPatterns;
  25 import static com.intellij.patterns.StandardPatterns.or;
  26 import com.intellij.psi.*;
  27 import com.intellij.util.ProcessingContext;
  28 import gnu.trove.THashSet;
  29 import org.jetbrains.annotations.NotNull;
  30
  31 import java.util.Set;
  32
  33 /**
  34  * @author peter
  35  */
  36 public class JavaMemberNameCompletionContributor extends CompletionContributor {
  37   public static final ElementPattern<PsiElement> INSIDE_TYPE_PARAMS_PATTERN =
  38     psiElement().afterLeaf(psiElement().withText("?").afterLeaf("<", ","));
  39
  40   public JavaMemberNameCompletionContributor() {
  41     extend(
  42         CompletionType.BASIC,
  43         psiElement(PsiIdentifier.class).andNot(INSIDE_TYPE_PARAMS_PATTERN).withParent(
  44             or(psiElement(PsiLocalVariable.class), psiElement(PsiParameter.class))),
  45         new CompletionProvider<CompletionParameters>() {
  46           public void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext matchingContext, @NotNull final CompletionResultSet result) {
  47             final Set<LookupElement> lookupSet = new THashSet<LookupElement>();
  48             ApplicationManager.getApplication().runReadAction(new Runnable() {
  49               public void run() {
  50                 JavaCompletionUtil.completeLocalVariableName(lookupSet, result.getPrefixMatcher(), (PsiVariable)parameters.getPosition().getParent());
  51               }
  52             });
  53             for (final LookupElement item : lookupSet) {
  54               if (item instanceof LookupItem) {
  55                 ((LookupItem)item).setAutoCompletionPolicy(AutoCompletionPolicy.GIVE_CHANCE_TO_OVERWRITE);
  56               }
  57               result.addElement(item);
  58             }
  59           }
  60         });
  61     extend(
  62         CompletionType.BASIC,
  63         psiElement(PsiIdentifier.class).withParent(PsiField.class).andNot(INSIDE_TYPE_PARAMS_PATTERN),
  64         new CompletionProvider<CompletionParameters>() {
  65       public void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext matchingContext, @NotNull final CompletionResultSet result) {
  66         final Set<LookupElement> lookupSet = new THashSet<LookupElement>();
  67         ApplicationManager.getApplication().runReadAction(new Runnable() {
  68           public void run() {
  69             final PsiVariable variable = (PsiVariable)parameters.getPosition().getParent();
  70             JavaCompletionUtil.completeFieldName(lookupSet, variable, result.getPrefixMatcher());
  71             JavaCompletionUtil.completeMethodName(lookupSet, variable, result.getPrefixMatcher());
  72           }
  73         });
  74         for (final LookupElement item : lookupSet) {
  75           result.addElement(item);
  76         }
  77       }
  78     });
  79     extend(
  80         CompletionType.BASIC, PsiJavaPatterns.psiElement().nameIdentifierOf(PsiJavaPatterns.psiMethod().withParent(PsiClass.class)),
  81         new CompletionProvider<CompletionParameters>() {
  82           public void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext matchingContext, @NotNull final CompletionResultSet result) {
  83             final Set<LookupElement> lookupSet = new THashSet<LookupElement>();
  84             ApplicationManager.getApplication().runReadAction(new Runnable() {
  85               public void run() {
  86                 JavaCompletionUtil.completeMethodName(lookupSet, parameters.getPosition().getParent(), result.getPrefixMatcher());
  87               }
  88             });
  89             for (final LookupElement item : lookupSet) {
  90               result.addElement(item);
  91             }
  92           }
  93         });
  94
  95   }
  96
  97 }