RenameWOComponentAction.java

/* ====================================================================
 * 
 * The ObjectStyle Group Software License, Version 1.0 
 *
 * Copyright (c) 2007 The ObjectStyle Group 
 * and individual authors of the software.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 1. Redistributions of source code must retain the above copyright
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 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        ObjectStyle Group (http://objectstyle.org/)."
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 *    if and wherever such third-party acknowlegements normally appear.
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 *    must not be used to endorse or promote products derived
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package org.objectstyle.wolips.jdt.ui.refactoring.actions;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IResource;
import org.eclipse.jdt.internal.corext.refactoring.RefactoringAvailabilityTester;
import org.eclipse.jdt.internal.ui.refactoring.actions.RefactoringStarter;
import org.eclipse.jdt.ui.actions.RenameAction;
import org.eclipse.jdt.ui.refactoring.RefactoringSaveHelper;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.actions.SelectionListenerAction;
import org.objectstyle.wolips.refactoring.RenameWOComponentWizard;

public class RenameWOComponentAction extends SelectionListenerAction {

	private final IWorkbenchSite _site;

	private final IAction _delegateAction;

	public RenameWOComponentAction(IWorkbenchSite site) {
		super(null);
		_site = site;
		_delegateAction = new RenameAction(_site);
	}

	public void run() {
		IStructuredSelection selection = getStructuredSelection();
		if (!isWOComponentResource(selection)) {
			_delegateAction.run();
			return;
		}
		IResource resource = getResource(selection);
		if (!RefactoringAvailabilityTester.isRenameAvailable(resource)) {
			return;
		}
		RenameWOComponentWizard wizard = new RenameWOComponentWizard(resource);
		new RefactoringStarter().activate(wizard, _site.getShell(), wizard.getWindowTitle(), RefactoringSaveHelper.SAVE_ALL);
	}

	private static boolean isWOComponentResource(IStructuredSelection selection) {
		IResource resource = getResource(selection);
		if (resource instanceof IFolder && "wo".equals(resource.getLocation().getFileExtension())) {
			return true;
		}
		if (resource instanceof IFile && "api".equals(resource.getLocation().getFileExtension())) {
			return true;
		}
		return false;
	}

	private static IResource getResource(IStructuredSelection selection) {
		if (selection.size() != 1)
			return null;
		Object first = selection.getFirstElement();
		if (!(first instanceof IResource))
			return null;
		return (IResource) first;
	}

}