/**
* Copyright 2008 Google Inc.
*
* Licensed 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.waveprotocol.wave.client.editor.content;
import org.waveprotocol.wave.model.document.operation.DocOp;
import org.waveprotocol.wave.model.document.operation.LocationModifier;
import org.waveprotocol.wave.model.document.util.FocusedRange;
import org.waveprotocol.wave.model.document.util.Range;
/**
* Couple of static helper methods for {@link Range}
*
*/
public class RangeHelper {
/**
* @param range
* @param modifier
* @return (copy of) range transformed against modifier assuming
* range contains selection boundaries
*/
public static FocusedRange applyModifier(FocusedRange range, DocOp modifier) {
return applyModifier(modifier, range);
}
/**
* @param range
* @param modifier
* @return (copy of) range transformed against modifier
*/
public static FocusedRange applyModifier(DocOp modifier, FocusedRange range) {
int anchor = LocationModifier.transformLocation(modifier, range.getAnchor());
int focus = LocationModifier.transformLocation(modifier, range.getFocus());
return new FocusedRange(anchor, focus);
}
}