Example usage for javax.swing.text Segment Segment

Introduction

In this page you can find the example usage for javax.swing.text Segment Segment.

Prototype

public Segment() 

Source Link

Document

Creates a new segment.

Usage

From source file:Main.java

private static Segment getLineBuffer() {
    if (lineBuffer == null) {
        lineBuffer = new Segment();
    }//from www .  j a  v  a  2s  . com
    return lineBuffer;
}

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From source file:LiveParenMatcher.java

public void insertUpdate_3(DocumentEvent de) {
    Document doc = de.getDocument();
    int offset = de.getOffset();
    int length = de.getLength();
    Segment seg = new Segment();
    try {// www .  j a va2 s. com
        doc.getText(offset, length, seg); // text placed in Segment
    } catch (BadLocationException ble) {
    }

    // iterate through the Segment
    for (char ch = seg.first(); ch != seg.DONE; ch = seg.next())
        if (ch == '(' || ch == '[' || ch == '{' || ch == ')' || ch == ']' || ch == '}') {
            SwingUtilities.invokeLater(this); // will call run()
            return; // no need to check further
        }
}

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From source file:com.mirth.connect.client.ui.components.rsta.ac.js.MirthSourceCompletionProvider.java

@Override
public List<Completion> getCompletionsAt(JTextComponent tc, Point p) {
    Set<Completion> completions = new HashSet<Completion>();
    List<Completion> parentCompletions = super.getCompletionsAt(tc, p);
    if (CollectionUtils.isNotEmpty(parentCompletions)) {
        completions.addAll(parentCompletions);
    }//from   www  .  j a v a 2s.c  o m

    int offset = tc.viewToModel(p);
    if (offset < 0 || offset >= tc.getDocument().getLength()) {
        lastCompletionsAtText = null;
        lastParameterizedCompletionsAt = null;
        return new ArrayList<Completion>(completions);
    }

    Segment s = new Segment();
    Document doc = tc.getDocument();
    Element root = doc.getDefaultRootElement();
    int line = root.getElementIndex(offset);
    Element elem = root.getElement(line);
    int start = elem.getStartOffset();
    int end = elem.getEndOffset() - 1;

    try {

        doc.getText(start, end - start, s);

        // Get the valid chars before the specified offset.
        int startOffs = s.offset + (offset - start) - 1;
        while (startOffs >= s.offset && Character.isLetterOrDigit(s.array[startOffs])) {
            startOffs--;
        }

        // Get the valid chars at and after the specified offset.
        int endOffs = s.offset + (offset - start);
        while (endOffs < s.offset + s.count && Character.isLetterOrDigit(s.array[endOffs])) {
            endOffs++;
        }

        int len = endOffs - startOffs - 1;
        if (len <= 0) {
            lastParameterizedCompletionsAt = null;
            return new ArrayList<Completion>(completions);
        }
        String text = new String(s.array, startOffs + 1, len);

        if (text.equals(lastCompletionsAtText)) {
            if (CollectionUtils.isNotEmpty(lastParameterizedCompletionsAt)) {
                completions.addAll(lastParameterizedCompletionsAt);
            }
            return new ArrayList<Completion>(completions);
        }

        lastCompletionsAtText = text;
        lastParameterizedCompletionsAt = completionCache.getClassCompletions(tc, text);

        if (CollectionUtils.isNotEmpty(lastParameterizedCompletionsAt)) {
            completions.addAll(lastParameterizedCompletionsAt);
        }
        return new ArrayList<Completion>(completions);

    } catch (BadLocationException ble) {
        ble.printStackTrace(); // Never happens
    }

    lastCompletionsAtText = null;
    lastParameterizedCompletionsAt = null;

    return new ArrayList<Completion>(completions);
}

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From source file:Console.java

void returnPressed() {
    Document doc = getDocument();
    int len = doc.getLength();
    Segment segment = new Segment();
    try {//from   www .j ava 2 s  .co  m
        synchronized (doc) {
            doc.getText(outputMark, len - outputMark, segment);
        }
    } catch (javax.swing.text.BadLocationException ignored) {
        ignored.printStackTrace();
    }
    if (segment.count > 0) {
        history.addElement(segment.toString());
    }
    historyIndex = history.size();
    inPipe.write(segment.array, segment.offset, segment.count);
    append("\n");
    synchronized (doc) {
        outputMark = doc.getLength();
    }
    inPipe.write("\n");
    inPipe.flush();
    console1.flush();
}

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From source file:FormattedTextFieldExample.java

public FormattedFieldView(Element elem, FormattedTextField.FormatSpec formatSpec) {
    super(elem);/*from www. j  a  v  a2  s. c  o  m*/

    this.contentBuff = new Segment();
    this.measureBuff = new Segment();
    this.workBuff = new Segment();
    this.element = elem;

    buildMapping(formatSpec); // Build the model -> view map
    createContent(); // Update content string
}

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From source file:ro.nextreports.designer.ui.sqleditor.syntax.SyntaxDocument.java

/**
 * Parse the entire document and return list of tokens that do not already
 * exist in the tokens list. There may be overlaps, and replacements, 
 * which we will cleanup later./*from   www .  j av a2s.  co  m*/
 * 
 * @return list of tokens that do not exist in the tokens field 
 */
private void parse() {
    // if we have no lexer, then we must have no tokens...
    if (lexer == null) {
        tokens = null;
        return;
    }

    List<Token> tokens = new ArrayList<Token>(getLength() / 10);
    long time = System.nanoTime();
    int length = getLength();
    try {
        Segment segment = new Segment();
        getText(0, getLength(), segment);
        CharArrayReader reader = new CharArrayReader(segment.array, segment.offset, segment.count);
        lexer.yyreset(reader);
        Token token;
        while ((token = lexer.yylex()) != null) {
            tokens.add(token);
        }
    } catch (BadLocationException e) {
        LOG.error(e.getMessage(), e);
    } catch (IOException e) {
        // This will not be thrown from the Lexer
        LOG.error(e.getMessage(), e);
    } finally {
        // Benchmarks:
        // Parsed 574038 chars in 81 ms, giving 74584 tokens
        //                System.out.printf("Parsed %d in %d ms, giving %d tokens",
        //                        len, (System.nanoTime() - ts) / 1000000, toks.size());
        if (LOG.isDebugEnabled()) {
            LOG.debug(String.format("Parsed %d in %d ms, giving %d tokens", length,
                    (System.nanoTime() - time) / 1000000, tokens.size()));
        }
        this.tokens = tokens;
    }
}

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