/**
* This file Copyright (c) 2005-2008 Aptana, Inc. This program is
* dual-licensed under both the Aptana Public License and the GNU General
* Public license. You may elect to use one or the other of these licenses.
*
* This program is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. Redistribution, except as permitted by whichever of
* the GPL or APL you select, is prohibited.
*
* 1. For the GPL license (GPL), you can redistribute and/or modify this
* program under the terms of the GNU General Public License,
* Version 3, as published by the Free Software Foundation. You should
* have received a copy of the GNU General Public License, Version 3 along
* with this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Aptana provides a special exception to allow redistribution of this file
* with certain other free and open source software ("FOSS") code and certain additional terms
* pursuant to Section 7 of the GPL. You may view the exception and these
* terms on the web at http://www.aptana.com/legal/gpl/.
*
* 2. For the Aptana Public License (APL), this program and the
* accompanying materials are made available under the terms of the APL
* v1.0 which accompanies this distribution, and is available at
* http://www.aptana.com/legal/apl/.
*
* You may view the GPL, Aptana's exception and additional terms, and the
* APL in the file titled license.html at the root of the corresponding
* plugin containing this source file.
*
* Any modifications to this file must keep this entire header intact.
*/
package com.aptana.ide.editors.actions;
import com.aptana.ide.editors.unified.actions.UnifiedActionContributor;
import com.aptana.ide.parsing.IParseState;
import com.aptana.ide.parsing.nodes.IParseNode;
/**
* @author Pavel Petrochenko
*/
public class GotoPreviousMemberAction extends AbstractGotoMemberAction
{
/**
*
*/
public GotoPreviousMemberAction()
{
super(UnifiedActionContributor.GOTO_NEXT_ACTIONID, Messages.GotoPreviousMemberAction_TITLE);
}
/**
* @see org.eclipse.jface.action.Action#run()
*/
@Override
public void run()
{
IParseState parseState = part.getFileContext().getParseState();
IParseNode node = parseState.getParseResults();
int caretOffset = part.getViewer().getTextWidget().getCaretOffset();
node = findDeepestNode(node, caretOffset);
if (node != null)
{
if (node.getStartingOffset() == caretOffset)
{
IParseNode parent = getNavigatableParent(node);
if (parent != null)
{
IParseNode[] children = getNavigatableChilds(parent);
int childIndex = getNavigatableIndex(node);
if (childIndex > 0)
{
int endingOffset = children[childIndex - 1].getEndingOffset();
if (endingOffset != -1)
{
placeCursor(endingOffset);
}
}
else
{
int startingOffset = parent.getStartingOffset();
while (startingOffset == node.getStartingOffset())
{
parent = parent.getParent();
if (parent == null)
{
return;
}
startingOffset = parent.getStartingOffset();
}
if (startingOffset != -1)
{
placeCursor(startingOffset);
}
}
}
}
else
{
IParseNode[] children = getNavigatableChilds(node);
for (int a = children.length - 1; a >= 0; a--)
{
int chEnd = children[a].getEndingOffset();
if (chEnd < caretOffset && chEnd != -1)
{
placeCursor(chEnd);
return;
}
}
placeCursor(node.getStartingOffset());
}
}
}
}