/jEdit/tags/jedit-4-3-pre5/macros/Editing/Move_Line_Up.bsh

/*
 * Move_Line_Up.bsh - a BeanShell macro for moving lines up.
 *
 * Copyright (C) 2004 Nicholas O'Leary nol@deferential.net
 * 
 * :mode=beanshell:tabSize=3:indentSize=3:maxLineLen=0:noTabs=true:
 * :indentOnTab=true:indentOnEnter=true:folding=explicit:collapseFolds=1:
 *
 * {{{ License
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with the jEdit program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 * }}}
 *
 *  
 * Changes:
 *  05-Jul-04: Initial Implementation
 *
 * $Id: Move_Line_Up.bsh 5073 2004-07-06 00:14:58Z spestov $
 */

// Get the current line
int lineNo = textArea.getCaretLine();

// Make sure we are allowed to edit the buffer, and that we're not at the start
if (!buffer.isEditable() || lineNo == 0) {
   textArea.getToolkit().beep();
   return 1;
}
// Start the edit
buffer.beginCompoundEdit();
// Get the caret position on the line
int lineCaretOffset = textArea.getCaretPosition()-buffer.getLineStartOffset(lineNo);
// Get the line text to move
String line = buffer.getLineText(lineNo);
// Remove the line
textArea.deleteLine();
// Get the position to insert the line at
int newLinePos = buffer.getLineStartOffset(lineNo-1);
// Inser the line
buffer.insert(newLinePos,line+"\n");
// Move the cursor into the same position on the new line
textArea.setCaretPosition(newLinePos+lineCaretOffset);
// Indent this line
buffer.indentLine(lineNo-1,true);
// End the edit
buffer.endCompoundEdit();

/*

Macro index data (in DocBook format)

   <listitem>
      <para><filename>Move_Line_Up.bsh</filename></para>
      <abstract><para>Moves the current line up one, with automatic 
      indentation.</para></abstract>   
      </listitem>

*/