org.eclipse.search/new search/org/eclipse/search2/internal/ui/text2/FindInFileActionDelegate.java

/*******************************************************************************
 * Copyright (c) 2006, 2008 Wind River Systems, 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:
 * Markus Schorn - initial API and implementation
 *******************************************************************************/

package org.eclipse.search2.internal.ui.text2;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;

import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;

import org.eclipse.search.ui.ISearchQuery;
import org.eclipse.search.ui.text.TextSearchQueryProvider;

import org.eclipse.search2.internal.ui.SearchMessages;


public class FindInFileActionDelegate extends FindInRecentScopeActionDelegate {
	private IEditorPart fEditor= null;

	public FindInFileActionDelegate() {
		super(SearchMessages.FindInFileActionDelegate_text);
		setActionDefinitionId("org.eclipse.search.ui.performTextSearchFile"); //$NON-NLS-1$
	}

	@Override
	public void selectionChanged(IAction action, ISelection selection) {
		fEditor= null;
		IWorkbenchPage page= getWorkbenchPage();
		if (page != null) {
			IWorkbenchPart part= page.getActivePart();
			if (part instanceof IEditorPart) {
				IEditorPart editor= (IEditorPart) part;
				if (editor.getEditorInput() instanceof IFileEditorInput) {
					fEditor= editor;
				}
			}
		}
		action.setEnabled(fEditor != null);
	}

	@Override
	public void setActiveEditor(IAction action, IEditorPart editor) {
		if (editor != null && editor.getEditorInput() instanceof IFileEditorInput) {
			fEditor= editor;
		} else {
			fEditor= null;
		}
		super.setActiveEditor(action, editor);
	}


	private IFile getFile() {
		if (fEditor != null) {
			IEditorInput ei= fEditor.getEditorInput();
			if (ei instanceof IFileEditorInput) {
				return ((IFileEditorInput) ei).getFile();
			}
		}
		return null;
	}

	@Override
	protected ISearchQuery createQuery(TextSearchQueryProvider provider, String searchForString) throws CoreException {
		return provider.createQuery(searchForString, new IResource[] { getFile() });
	}

}