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layout | title |
---|---|
editable | 9. Completion Contributor |
The easiest way to provide completion is to use a completion contributor.
1. Define a completion contributor
Let's provide custom completion for values in property files.
package com.simpleplugin;
import com.intellij.codeInsight.completion.*;
import com.intellij.codeInsight.lookup.LookupElementBuilder;
import com.intellij.patterns.PlatformPatterns;
import com.intellij.util.ProcessingContext;
import com.simpleplugin.psi.SimpleTypes;
import org.jetbrains.annotations.NotNull;
public class SimpleCompletionContributor extends CompletionContributor {
public SimpleCompletionContributor() {
extend(CompletionType.BASIC,
PlatformPatterns.psiElement(SimpleTypes.VALUE).withLanguage(SimpleLanguage.INSTANCE),
new CompletionProvider<CompletionParameters>() {
public void addCompletions(@NotNull CompletionParameters parameters,
ProcessingContext context,
@NotNull CompletionResultSet resultSet) {
resultSet.addElement(LookupElementBuilder.create("Hello"));
}
}
);
}
}
2. Register the completion contributor
<completion.contributor language="Simple" implementationClass="com.simpleplugin.SimpleCompletionContributor"/>