CancelableNameEnvironment.java :  » Algebra » ohl » org » eclipse » jdt » internal » core » Java Open Source

/*******************************************************************************
 * Copyright (c) 2004, 2010 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.jdt.internal.core;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.WorkingCopyOwner;
import org.eclipse.jdt.internal.codeassist.ISearchRequestor;
import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
import org.eclipse.jdt.internal.compiler.problem.AbortCompilation;


public class CancelableNameEnvironment extends SearchableEnvironment implements INameEnviromentWithProgress {
  private IProgressMonitor monitor;

  public CancelableNameEnvironment(JavaProject project, WorkingCopyOwner owner, IProgressMonitor monitor) throws JavaModelException {
    super(project, owner);
    setMonitor(monitor);
  }

  private void checkCanceled() {
    if (this.monitor != null && this.monitor.isCanceled()) {
      if (NameLookup.VERBOSE)
        System.out.println(Thread.currentThread() + " CANCELLING LOOKUP "); //$NON-NLS-1$
      throw new AbortCompilation(true/*silent*/, new OperationCanceledException());
    }
  }

  public void findPackages(char[] prefix, ISearchRequestor requestor) {
    checkCanceled();
    super.findPackages(prefix, requestor);
  }

  public NameEnvironmentAnswer findType(char[] name, char[][] packageName) {
    checkCanceled();
    return super.findType(name, packageName);
  }

  public NameEnvironmentAnswer findType(char[][] compoundTypeName) {
    checkCanceled();
    return super.findType(compoundTypeName);
  }

  public void findTypes(char[] prefix, boolean findMembers, boolean camelCaseMatch, int searchFor, ISearchRequestor storage, IProgressMonitor progressMonitor) {
    checkCanceled();
    super.findTypes(prefix, findMembers, camelCaseMatch, searchFor, storage, progressMonitor);
  }
  
  public void setMonitor(IProgressMonitor monitor) {
    this.monitor = monitor;
  }
}