AutoComplete

Features

Adding to Your Project

Compiling

gradlew clean build --warning-mode all

Example Usage

import java.awt.*;
import javax.swing.*;
import org.fife.ui.autocomplete.*;
import org.fife.ui.rsyntaxtextarea.RSyntaxTextArea;
import org.fife.ui.rsyntaxtextarea.SyntaxConstants;
import org.fife.ui.rtextarea.RTextScrollPane;
public class AutoCompleteDemo extends JFrame {
 public AutoCompleteDemo() {
 JPanel contentPane = new JPanel(new BorderLayout());
 RSyntaxTextArea textArea = new RSyntaxTextArea(20, 60);
 textArea.setSyntaxEditingStyle(SyntaxConstants.SYNTAX_STYLE_JAVA);
 textArea.setCodeFoldingEnabled(true);
 contentPane.add(new RTextScrollPane(textArea));
 // A CompletionProvider is what knows of all possible completions, and
 // analyzes the contents of the text area at the caret position to
 // determine what completion choices should be presented. Most instances
 // of CompletionProvider (such as DefaultCompletionProvider) are designed
 // so that they can be shared among multiple text components.
 CompletionProvider provider = createCompletionProvider();
 // An AutoCompletion acts as a "middle-man" between a text component
 // and a CompletionProvider. It manages any options associated with
 // the auto-completion (the popup trigger key, whether to display a
 // documentation window along with completion choices, etc.). Unlike
 // CompletionProviders, instances of AutoCompletion cannot be shared
 // among multiple text components.
 AutoCompletion ac = new AutoCompletion(provider);
 ac.install(textArea);
 setContentPane(contentPane);
 setTitle("AutoComplete Demo");
 setDefaultCloseOperation(EXIT_ON_CLOSE);
 pack();
 setLocationRelativeTo(null);
 }
 /**
 * Create a simple provider that adds some Java-related completions.
 */
 private CompletionProvider createCompletionProvider() {
 // A DefaultCompletionProvider is the simplest concrete implementation
 // of CompletionProvider. This provider has no understanding of
 // language semantics. It simply checks the text entered up to the
 // caret position for a match against known completions. This is all
 // that is needed in the majority of cases.
 DefaultCompletionProvider provider = new DefaultCompletionProvider();
 // Add completions for all Java keywords. A BasicCompletion is just
 // a straightforward word completion.
 provider.addCompletion(new BasicCompletion(provider, "abstract"));
 provider.addCompletion(new BasicCompletion(provider, "assert"));
 provider.addCompletion(new BasicCompletion(provider, "break"));
 provider.addCompletion(new BasicCompletion(provider, "case"));
 // ... etc ...
 provider.addCompletion(new BasicCompletion(provider, "transient"));
 provider.addCompletion(new BasicCompletion(provider, "try"));
 provider.addCompletion(new BasicCompletion(provider, "void"));
 provider.addCompletion(new BasicCompletion(provider, "volatile"));
 provider.addCompletion(new BasicCompletion(provider, "while"));
 // Add a couple of "shorthand" completions. These completions don't
 // require the input text to be the same thing as the replacement text.
 provider.addCompletion(new ShorthandCompletion(provider, "sysout",
 "System.out.println(", "System.out.println("));
 provider.addCompletion(new ShorthandCompletion(provider, "syserr",
 "System.err.println(", "System.err.println("));
 return provider;
 }
 public static void main(String[] args) {
 // Instantiate GUI on the EDT.
 SwingUtilities.invokeLater(() -> {
 try {
 String laf = UIManager.getSystemLookAndFeelClassName();
 UIManager.setLookAndFeel(laf);
 } catch (Exception e) { /* Never happens */ }
 new AutoCompleteDemo().setVisible(true);
 });
 }
}

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