/*******************************************************************************
 * Copyright (c) 2001, 2005 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 Jens Lukowski/Innoopract - initial renaming/restructuring
 *******************************************************************************/
package org.eclipse.wst.sse.ui.internal.provisional.style;

import org.eclipse.jface.text.ITypedRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;

import java.util.Collection;

/**
 * This class can be used by default, if no attribute provider is found for a certain region type.
 * Its probably an error in a factory somewhere if an adapter is not found, but this class allows
 * the logic to proceed basically simply providing default colored syntax highlighting. Not to be
 * subclassed.
 */
final public class LineStyleProviderForNoOp implements LineStyleProvider {

  public void init(IStructuredDocument document, Highlighter highlighter) {
    // nothing to do
  }

  /**
   * @see org.eclipse.wst.sse.ui.internal.provisional.style.AbstractLineStyleProvider#prepareRegions(org.eclipse.jface.text.ITypedRegion,
   *      int, int, java.util.Collection)
   */
  public boolean prepareRegions(ITypedRegion currentRegion, int start, int length,
      Collection holdResults) {
    // add nothing, but say handled.
    return true;
  }

  public void release() {
    // nothing to do
  }
}