eu.mihosoft.vrl.lang.visual.TestCompletionProvider Maven / Gradle / Ivy
/*
* TestCompletionProvider.java
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2009–2015 Steinbeis Forschungszentrum (STZ Ölbronn),
* Copyright (c) 2007–2017 by Michael Hoffer
*
* This file is part of Visual Reflection Library (VRL).
*
* VRL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* as published by the Free Software Foundation.
*
* see: http://opensource.org/licenses/LGPL-3.0
* file://path/to/VRL/src/eu/mihosoft/vrl/resources/license/lgplv3.txt
*
* VRL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* This version of VRL includes copyright notice and attribution requirements.
* According to the LGPL this information must be displayed even if you modify
* the source code of VRL. Neither the VRL Canvas attribution icon nor any
* copyright statement/attribution may be removed.
*
* Attribution Requirements:
*
* If you create derived work you must do three things regarding copyright
* notice and author attribution.
*
* First, the following text must be displayed on the Canvas:
* "based on VRL source code". In this case the VRL canvas icon must be removed.
*
* Second, the copyright notice must remain. It must be reproduced in any
* program that uses VRL.
*
* Third, add an additional notice, stating that you modified VRL. A suitable
* notice might read
* "VRL source code modified by YourName 2012".
*
* Note, that these requirements are in full accordance with the LGPL v3
* (see 7. Additional Terms, b).
*
* Please cite the publication(s) listed below.
*
* Publications:
*
* M. Hoffer, C. Poliwoda, & G. Wittum. (2013). Visual reflection library:
* a framework for declarative GUI programming on the Java platform.
* Computing and Visualization in Science, 2013, 16(4),
* 181–192. http://doi.org/10.1007/s00791-014-0230-y
*/
package eu.mihosoft.vrl.lang.visual;
import java.util.ArrayList;
import java.util.List;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.Element;
import javax.swing.text.JTextComponent;
import org.fife.ui.autocomplete.Completion;
import org.fife.ui.autocomplete.DefaultCompletionProvider;
/**
*
* @author Michael Hoffer <[email protected]>
*/
public class TestCompletionProvider extends DefaultCompletionProvider {
/**
* Returns the text just before the current caret position that could be
* the start of something auto-completable.
*
* This method returns all characters before the caret that are matched
* by {@link #isValidChar(char)}.
*
* {@inheritDoc}
*/
@Override
public String getAlreadyEnteredText(JTextComponent comp) {
Document doc = comp.getDocument();
int dot = comp.getCaretPosition();
// Element root = doc.getDefaultRootElement();
// int index = root.getElementIndex(dot);
// Element elem = root.getElement(index);
// int start = elem.getStartOffset();
// int len = dot-start;
try {
return doc.getText(0, dot);
} catch (BadLocationException ble) {
ble.printStackTrace(System.err);
return EMPTY_STRING;
}
// int segEnd = seg.offset + len;
// start = segEnd - 1;
// while (start>=seg.offset && isValidChar(seg.array[start])) {
// start--;
// }
// start++;
//
// len = segEnd - start;
// return len==0 ? EMPTY_STRING : new String(seg.array, start, len);
}
@Override
@SuppressWarnings("unchecked")
public List getCompletions(JTextComponent tc) {
String fullText = tc.getText();
List result = new ArrayList();
String text = getAlreadyEnteredText(tc);
result.addAll(super.getCompletions(tc));
return result;
}
@Override
protected boolean isValidChar(char ch) {
return true;
}
}