/**
* remove-trailing-ws.bsh - a BeanShell macro for the jEdit text editor that
* removes Trailing WhiteSpaces of selected lines (as the action with same
* name does). In contrast, if no selection is present, all lines are processed.
* 
 *
  * :folding=indent:collapseFolds=1:
 *
 * Copyright (C) 2008 Robert Schwenn
  * 02.05.2008  1.0  initial Version
 * 
 * This macro is based on the retainLines.bsh macro
 * by Jia Zhiming jiazhimi@yahoo.com.cn
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 * 
 * This program 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 General Public License for more details.
*/


void removeTrailingWhitespaces() {
  //
  if (textArea.getSelection().length > 0) {
    // selection is present
    textArea.removeTrailingWhiteSpace();
    
  } else {
    // no selection => process all lines
    
    //backup current lineNo.
    CaretLine = textArea.getCaretLine();
    
    //remove trailing whitespaces of all lines
    textArea.selectAll();
    textArea.removeTrailingWhiteSpace();
    
    //deselect all, move caret to the line that was active before the macro started.
    textArea.selectNone();
    textArea.moveCaretPosition(textArea.getLineStartOffset(CaretLine));
  }
}


// starting point
if (buffer.isReadOnly() || !textArea.isEditable()) {
  final static String ErrorNotEditableDialogTitle   = jEdit.getProperty("macro.rs.general.ErrorNotEditableDialog.title",   "Not Editable");
  final static String ErrorNotEditableDialogMessage = jEdit.getProperty("macro.rs.general.ErrorNotEditableDialog.message", "Buffer can't be edited!");
  JOptionPane.showMessageDialog(view, ErrorNotEditableDialogMessage, ErrorNotEditableDialogTitle, JOptionPane.ERROR_MESSAGE);
} else {
  removeTrailingWhitespaces();
}