| /* |
| * 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.projectview.completion; |
| |
| import static com.intellij.patterns.PlatformPatterns.psiElement; |
| |
| import com.google.common.collect.Ordering; |
| import com.google.idea.blaze.base.lang.projectview.language.ProjectViewLanguage; |
| import com.google.idea.blaze.base.lang.projectview.psi.ProjectViewPsiListSection; |
| import com.google.idea.blaze.base.model.primitives.LanguageClass; |
| import com.google.idea.blaze.base.model.primitives.WorkspaceType; |
| import com.google.idea.blaze.base.projectview.section.sections.AdditionalLanguagesSection; |
| import com.google.idea.blaze.base.sync.SyncCache; |
| import com.google.idea.blaze.base.sync.projectview.LanguageSupport; |
| import com.intellij.codeInsight.completion.AutoCompletionContext; |
| import com.intellij.codeInsight.completion.AutoCompletionDecision; |
| import com.intellij.codeInsight.completion.CompletionContributor; |
| import com.intellij.codeInsight.completion.CompletionParameters; |
| import com.intellij.codeInsight.completion.CompletionProvider; |
| import com.intellij.codeInsight.completion.CompletionResultSet; |
| import com.intellij.codeInsight.completion.CompletionType; |
| import com.intellij.codeInsight.lookup.LookupElement; |
| import com.intellij.codeInsight.lookup.LookupElementBuilder; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.patterns.StandardPatterns; |
| import com.intellij.util.ProcessingContext; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| /** Code completion for additional language types. */ |
| public class AdditionalLanguagesCompletionContributor extends CompletionContributor { |
| |
| @Override |
| public AutoCompletionDecision handleAutoCompletionPossibility(AutoCompletionContext context) { |
| // auto-insert the obvious only case; else show other cases. |
| final LookupElement[] items = context.getItems(); |
| if (items.length == 1) { |
| return AutoCompletionDecision.insertItem(items[0]); |
| } |
| return AutoCompletionDecision.SHOW_LOOKUP; |
| } |
| |
| public AdditionalLanguagesCompletionContributor() { |
| extend( |
| CompletionType.BASIC, |
| psiElement() |
| .withLanguage(ProjectViewLanguage.INSTANCE) |
| .inside( |
| psiElement(ProjectViewPsiListSection.class) |
| .withText( |
| StandardPatterns.string() |
| .startsWith(AdditionalLanguagesSection.KEY.getName()))), |
| new CompletionProvider<CompletionParameters>() { |
| @Override |
| protected void addCompletions( |
| CompletionParameters parameters, |
| ProcessingContext context, |
| CompletionResultSet result) { |
| for (LanguageClass type : |
| availableAdditionalLanguages(parameters.getEditor().getProject())) { |
| result.addElement(LookupElementBuilder.create(type.getName())); |
| } |
| } |
| }); |
| } |
| |
| private static List<LanguageClass> availableAdditionalLanguages(Project project) { |
| List<LanguageClass> langs = |
| SyncCache.getInstance(project) |
| .get( |
| AdditionalLanguagesCompletionContributor.class, |
| (proj, projectData) -> |
| additionalLanguages(projectData.workspaceLanguageSettings.getWorkspaceType())); |
| return langs == null ? additionalLanguages(LanguageSupport.getDefaultWorkspaceType()) : langs; |
| } |
| |
| private static List<LanguageClass> additionalLanguages(WorkspaceType workspaceType) { |
| return LanguageSupport.availableAdditionalLanguages(workspaceType) |
| .stream() |
| .sorted(Ordering.usingToString()) |
| .collect(Collectors.toList()); |
| } |
| } |