/*******************************************************************************
* Copyright (c) 2005, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.sse.ui.internal.reconcile;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.core.internal.provisional.IndexedRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
/**
* Uses IStructuredModel nodes to check "overlaps()" when getting annotations to remove.
*/
public abstract class StructuredTextReconcilingStrategy extends AbstractStructuredTextReconcilingStrategy {
public StructuredTextReconcilingStrategy(ISourceViewer sourceViewer) {
super(sourceViewer);
}
/**
* Checks if this position overlaps any of the StructuredDocument regions'
* correstponding IndexedRegion.
*
* @param pos
* @param dr
* @return true if the position overlaps any of the regions, otherwise
* false.
*/
protected boolean overlaps(Position pos, IStructuredDocumentRegion[] sdRegions) {
int start = -1;
int end = -1;
for (int i = 0; i < sdRegions.length; i++) {
if(!sdRegions[i].isDeleted()) {
IndexedRegion corresponding = getCorrespondingNode(sdRegions[i]);
if(corresponding != null) {
if (start == -1 || start > corresponding.getStartOffset())
start = corresponding.getStartOffset();
if (end == -1 || end < corresponding.getEndOffset())
end = corresponding.getEndOffset();
}
}
}
return pos.overlapsWith(start, end - start);
}
/**
* Returns the corresponding node for the StructuredDocumentRegion.
*
* @param sdRegion
* @return the corresponding node for sdRegion
*/
protected IndexedRegion getCorrespondingNode(IStructuredDocumentRegion sdRegion) {
IStructuredModel sModel = StructuredModelManager.getModelManager().getExistingModelForRead(getDocument());
IndexedRegion indexedRegion = null;
try {
if (sModel != null)
indexedRegion = sModel.getIndexedRegion(sdRegion.getStart());
} finally {
if (sModel != null)
sModel.releaseFromRead();
}
return indexedRegion;
}
}