| /* |
| * Copyright 2016 The Bazel Authors. All rights reserved. |
| * |
| * 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.google.idea.blaze.base.lang.buildfile.completion; |
| |
| import com.google.idea.blaze.base.lang.buildfile.psi.StringLiteral; |
| import com.google.idea.blaze.base.lang.buildfile.references.QuoteType; |
| import com.intellij.openapi.util.NullableLazyValue; |
| import com.intellij.psi.PsiElement; |
| |
| import javax.annotation.Nullable; |
| import javax.swing.*; |
| |
| /** |
| * We calculate the referenced element lazily, as it often won't be needed |
| * (e.g. when the string doesn't match the string fragment being completed. |
| */ |
| public class StringLiteralReferenceLookupElement extends BuildLookupElement { |
| |
| private final StringLiteral literal; |
| private NullableLazyValue<PsiElement> referencedElement = new NullableLazyValue<PsiElement>() { |
| @Nullable |
| @Override |
| protected PsiElement compute() { |
| return literal.getReferencedElement(); |
| } |
| }; |
| |
| public StringLiteralReferenceLookupElement(StringLiteral literal, QuoteType quoteType) { |
| super(literal.getStringContents(), quoteType); |
| this.literal = literal; |
| } |
| |
| @Nullable |
| @Override |
| public Icon getIcon() { |
| PsiElement ref = referencedElement.getValue(); |
| return ref != null ? ref.getIcon(0) : null; |
| } |
| |
| } |