/*******************************************************************************
* Copyright (c) 2009 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
* Zend Technologies
*******************************************************************************/
package org.eclipse.php.internal.ui.search;
import java.io.IOException;
import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.dltk.core.ModelException;
import org.eclipse.php.core.ast.nodes.Program;
import org.eclipse.php.internal.core.search.IOccurrencesFinder;
import org.eclipse.php.ui.editor.SharedASTProvider;
import org.eclipse.search.ui.NewSearchUI;
public final class FindOccurrencesEngine {
public static FindOccurrencesEngine create(IOccurrencesFinder finder) {
return new FindOccurrencesEngine(finder);
}
private IOccurrencesFinder fFinder;
private FindOccurrencesEngine(IOccurrencesFinder finder) {
if (finder == null)
throw new IllegalArgumentException();
fFinder = finder;
}
private String run(Program astRoot, int offset, int length) {
String message = fFinder.initialize(astRoot, offset, length);
if (message != null)
return message;
performNewSearch(fFinder, astRoot.getSourceModule());
return null;
}
public String run(ISourceModule input, int offset, int length) throws ModelException, IOException {
if (input.getSourceRange() == null) {
return "SearchMessages.FindOccurrencesEngine_noSource_text"; //$NON-NLS-1$
}
final Program root = SharedASTProvider.getAST(input, SharedASTProvider.WAIT_YES, null);
if (root == null) {
return "SearchMessages.FindOccurrencesEngine_cannotParse_text"; //$NON-NLS-1$
}
return run(root, offset, length);
}
private void performNewSearch(IOccurrencesFinder finder, ISourceModule element) {
NewSearchUI.runQueryInBackground(new OccurrencesSearchQuery(finder, element));
}
}