| /* |
| * Copyright 2000-2009 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 com.intellij.codeInsight.completion; |
| |
| import com.intellij.codeInsight.ExpectedTypeInfo; |
| import com.intellij.codeInsight.generation.OverrideImplementUtil; |
| import com.intellij.codeInsight.lookup.LookupElement; |
| import com.intellij.psi.*; |
| import com.intellij.psi.statistics.StatisticsManager; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.util.TypeConversionUtil; |
| |
| /** |
| * @author peter |
| */ |
| public class AbstractExpectedTypeSkipper extends CompletionPreselectSkipper { |
| |
| private enum Result { |
| NON_DEFAULT, |
| STRING, |
| ABSTRACT, |
| ACCEPT |
| } |
| |
| @Override |
| public boolean skipElement(LookupElement element, CompletionLocation location) { |
| return skips(element, location); |
| } |
| |
| public static boolean skips(LookupElement element, CompletionLocation location) { |
| return getSkippingStatus(element, location) != Result.ACCEPT; |
| } |
| |
| private static Result getSkippingStatus(final LookupElement item, final CompletionLocation location) { |
| if (location.getCompletionType() != CompletionType.SMART) return Result.ACCEPT; |
| |
| final PsiExpression expression = PsiTreeUtil.getParentOfType(location.getCompletionParameters().getPosition(), PsiExpression.class); |
| if (!(expression instanceof PsiNewExpression)) return Result.ACCEPT; |
| |
| final Object object = item.getObject(); |
| if (!(object instanceof PsiClass)) return Result.ACCEPT; |
| |
| if (StatisticsManager.getInstance().getUseCount(StatisticsWeigher.getBaseStatisticsInfo(item, location)) > 1) return Result.ACCEPT; |
| |
| PsiClass psiClass = (PsiClass)object; |
| |
| int toImplement = 0; |
| for (final PsiMethod method : psiClass.getMethods()) { |
| if (method.hasModifierProperty(PsiModifier.ABSTRACT)) { |
| toImplement++; |
| if (toImplement > 2) return Result.ABSTRACT; |
| } |
| } |
| |
| toImplement += OverrideImplementUtil.getMethodSignaturesToImplement(psiClass).size(); |
| if (toImplement > 2) return Result.ABSTRACT; |
| |
| final ExpectedTypeInfo[] infos = JavaCompletionUtil.EXPECTED_TYPES.getValue(location); |
| boolean isDefaultType = false; |
| if (infos != null) { |
| final PsiType type = JavaPsiFacade.getInstance(psiClass.getProject()).getElementFactory().createType(psiClass); |
| for (final ExpectedTypeInfo info : infos) { |
| final PsiType infoType = TypeConversionUtil.erasure(info.getType().getDeepComponentType()); |
| final PsiType defaultType = TypeConversionUtil.erasure(info.getDefaultType().getDeepComponentType()); |
| if (!defaultType.equals(infoType) && infoType.isAssignableFrom(type)) { |
| if (!defaultType.isAssignableFrom(type)) return Result.NON_DEFAULT; |
| isDefaultType = true; |
| } |
| } |
| } |
| |
| if (toImplement > 0) return Result.ACCEPT; |
| |
| if (psiClass.hasModifierProperty(PsiModifier.ABSTRACT)) return Result.ABSTRACT; |
| if (!isDefaultType && CommonClassNames.JAVA_LANG_STRING.equals(psiClass.getQualifiedName())) return Result.STRING; |
| if (CommonClassNames.JAVA_LANG_OBJECT.equals(psiClass.getQualifiedName())) return Result.NON_DEFAULT; |
| |
| return Result.ACCEPT; |
| } |
| |
| } |