/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.ldapstudio.browser.ui.editors.filter;
// TODO: Refactor Filter Editor
import org.apache.directory.ldapstudio.browser.core.model.filter.LdapFilter;
import org.apache.directory.ldapstudio.browser.core.model.filter.parser.LdapFilterParser;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.text.source.ICharacterPairMatcher;
import org.eclipse.jface.text.source.ISourceViewer;
public class FilterCharacterPairMatcher implements ICharacterPairMatcher
{
private ISourceViewer sourceViewer;
private LdapFilterParser parser;
private int anchor;
public FilterCharacterPairMatcher( ISourceViewer sourceViewer, LdapFilterParser parser )
{
super();
this.sourceViewer = sourceViewer;
this.parser = parser;
this.clear();
}
public void dispose()
{
}
public void clear()
{
this.anchor = LEFT;
}
public IRegion match( IDocument document, int offset )
{
LdapFilter model = this.parser.getModel();
if ( model != null )
{
LdapFilter filter = this.parser.getModel().getFilter( offset - 1 );
if ( filter != null && filter.getStartToken() != null && filter.getStopToken() != null )
{
int left = filter.getStartToken().getOffset();
int right = filter.getStopToken().getOffset();
if ( left == offset - 1 )
{
this.anchor = LEFT;
IRegion region = new Region( left, right - left + 1 );
return region;
}
if ( right == offset - 1 )
{
this.anchor = RIGHT;
IRegion region = new Region( left, right - left + 1 );
return region;
}
}
}
return null;
}
public int getAnchor()
{
return this.anchor;
}
}