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55 lines
1.6 KiB
Markdown
55 lines
1.6 KiB
Markdown
---
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layout: editable
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title: Completion Contributor
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---
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The easiest way to provide completion is to use a completion contributor.
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### 1. Define a completion contributor
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Let's provide custom completion for values in property files.
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```java
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package com.simpleplugin;
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import com.intellij.codeInsight.completion.*;
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import com.intellij.codeInsight.lookup.LookupElementBuilder;
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import com.intellij.patterns.PlatformPatterns;
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import com.intellij.util.ProcessingContext;
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import com.simpleplugin.psi.SimpleTypes;
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import org.jetbrains.annotations.NotNull;
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public class SimpleCompletionContributor extends CompletionContributor {
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public SimpleCompletionContributor() {
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extend(CompletionType.BASIC,
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PlatformPatterns.psiElement(SimpleTypes.VALUE).withLanguage(SimpleLanguage.INSTANCE),
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new CompletionProvider<CompletionParameters>() {
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public void addCompletions(@NotNull CompletionParameters parameters,
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ProcessingContext context,
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@NotNull CompletionResultSet resultSet) {
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resultSet.addElement(LookupElementBuilder.create("Hello"));
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}
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}
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);
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}
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}
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```
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### 2. Register the completion contributor
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```xml
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<completion.contributor language="Simple" implementationClass="com.simpleplugin.SimpleCompletionContributor"/>
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```
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### 3. Run the project
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[Previous](line_marker_provider.html)
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[Top](cls_tutorial.html)
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[Next](reference_contributor.html)
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