| /* |
| * Copyright 2000-2014 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.jetbrains.plugins.groovy.lang.completion; |
| |
| import com.intellij.codeInsight.completion.*; |
| import com.intellij.codeInsight.lookup.LookupElement; |
| import com.intellij.codeInsight.lookup.LookupElementBuilder; |
| import com.intellij.patterns.PlatformPatterns; |
| import com.intellij.psi.CommonClassNames; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiType; |
| import com.intellij.util.ProcessingContext; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.plugins.groovy.extensions.GroovyMapCompletionUtil; |
| import org.jetbrains.plugins.groovy.extensions.GroovyMapContentProvider; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrMethodCall; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.GrMapType; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.GroovyPsiManager; |
| |
| /** |
| * @author Sergey Evdokimov |
| */ |
| class MapKeysCompletionProvider extends CompletionProvider<CompletionParameters> { |
| |
| public static void register(CompletionContributor contributor) { |
| MapKeysCompletionProvider provider = new MapKeysCompletionProvider(); |
| |
| contributor.extend(CompletionType.BASIC, PlatformPatterns.psiElement().withParent(PlatformPatterns.psiElement(GrReferenceExpression.class)), provider); |
| } |
| |
| @Override |
| protected void addCompletions(@NotNull CompletionParameters parameters, |
| ProcessingContext context, |
| @NotNull CompletionResultSet result) { |
| PsiElement element = parameters.getPosition(); |
| GrReferenceExpression expression = (GrReferenceExpression)element.getParent(); |
| |
| GrExpression qualifierExpression = expression.getQualifierExpression(); |
| if (qualifierExpression == null) return; |
| |
| PsiType mapType = qualifierExpression.getType(); |
| |
| if (!GroovyPsiManager.isInheritorCached(mapType, CommonClassNames.JAVA_UTIL_MAP)) { |
| return; |
| } |
| |
| PsiElement resolve = null; |
| |
| if (qualifierExpression instanceof GrMethodCall) { |
| resolve = ((GrMethodCall)qualifierExpression).resolveMethod(); |
| } |
| else if (qualifierExpression instanceof GrReferenceExpression) { |
| resolve = ((GrReferenceExpression)qualifierExpression).resolve(); |
| } |
| |
| for (GroovyMapContentProvider provider : GroovyMapContentProvider.EP_NAME.getExtensions()) { |
| GroovyMapCompletionUtil.addKeyVariants(provider, qualifierExpression, resolve, result); |
| } |
| |
| if (mapType instanceof GrMapType) { |
| for (String key : ((GrMapType)mapType).getStringKeys()) { |
| LookupElement lookup = LookupElementBuilder.create(key); |
| lookup = PrioritizedLookupElement.withPriority(lookup, 1); |
| result.addElement(lookup); |
| } |
| } |
| } |
| } |