GetJavaWord.java

/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is Forte for Java, Community Edition. The Initial
 * Developer of the Original Code is Sun Microsystems, Inc. Portions
 * Copyright 1997-2000 Sun Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.javadoc.search;

import org.openide.windows.TopComponent;
import org.openide.cookies.EditorCookie;
import org.openide.nodes.Node;

import javax.swing.JEditorPane;

/*
import javax.swing.text.TextAction;
import javax.swing.text.JTextComponent;
*/
/** Tries to find actual focused java word.

 @author Petr Hrebejk
*/

class GetJavaWord extends Object {

    static String getCurrentJavaWord() {


        /*
        if ( TopComponent.getRegistry().getActivated() == null )
          return null;
        */
        Node[] n = TopComponent.getRegistry ().getActivatedNodes ();

        if (n.length == 1) {
            EditorCookie ec = (EditorCookie) n[0].getCookie (EditorCookie.class);
            if (ec != null) {
                JEditorPane[] panes = ec.getOpenedPanes ();
                if ( panes == null )
                    return null;
                if (panes.length > 0) {
                    int cursor = panes[0].getCaret ().getDot ();
                    String selection = panes[0].getSelectedText ();

                    if ( selection != null && selection.length() > 0 )
                        return selection;
                    else {

                        String text = panes[0].getText();
                        if ( text == null )
                            return null;
                        int pos = panes[0].getCaretPosition();

                        if ( pos < 0 || pos >= text.length() )
                            return null;

                        int bix, eix;

                        for( bix = Character.isJavaIdentifierPart( text.charAt( pos ) ) ? pos : pos - 1;
                                bix >= 0 && Character.isJavaIdentifierPart( text.charAt( bix ) ); bix-- );
                        for( eix = pos; eix < text.length() && Character.isJavaIdentifierPart( text.charAt( eix )); eix++ );

                        return bix == eix ? null : text.substring( bix + 1, eix  );
                    }
                }
            }
        }

        return null;
    }
}


/*
 * Log
 *  9    Gandalf   1.8         1/15/00  Petr Hrebejk    Wxeption on first char 
 *       fixed
 *  8    Gandalf   1.7         11/10/99 Petr Hrebejk    Ctrl+F1 now works in the
 *       first line of editor too.
 *  7    Gandalf   1.6         10/23/99 Ian Formanek    NO SEMANTIC CHANGE - Sun
 *       Microsystems Copyright in File Comment
 *  6    Gandalf   1.5         7/30/99  Petr Hrebejk    Search uses 
 *       FileSystemCapabilities
 *  5    Gandalf   1.4         7/26/99  Petr Hrebejk    AutoComment tool 
 *       implemented
 *  4    Gandalf   1.3         7/12/99  Petr Hrebejk    New window system
 *  3    Gandalf   1.2         6/23/99  Petr Hrebejk    Better way to get 
 *       current editor word
 *  2    Gandalf   1.1         6/11/99  Petr Hrebejk    Better support for 
 *       search from editor; Enter for start searching
 *  1    Gandalf   1.0         5/27/99  Petr Hrebejk    
 * $ 
 */