com.google.dart.tools.ui.internal.refactoring.actions.RenameResourceAction.java Source code

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Here is the source code for com.google.dart.tools.ui.internal.refactoring.actions.RenameResourceAction.java

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/*
 * Copyright (c) 2012, the Dart project authors.
 * 
 * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.dart.tools.ui.internal.refactoring.actions;

import com.google.dart.tools.internal.corext.refactoring.RefactoringAvailabilityTester;
import com.google.dart.tools.internal.corext.refactoring.RefactoringExecutionStarter;
import com.google.dart.tools.ui.actions.SelectionDispatchAction;

import org.eclipse.core.resources.IResource;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchSite;

/**
 * @coverage dart.editor.ui.refactoring.ui
 */
public class RenameResourceAction extends SelectionDispatchAction {

    public RenameResourceAction(IWorkbenchSite site) {
        super(site);
    }

    @Override
    public void selectionChanged(IStructuredSelection selection) {
        IResource element = getResource(selection);
        if (element == null)
            setEnabled(false);
        else
            setEnabled(RefactoringAvailabilityTester.isRenameAvailable(element));
    }

    @Override
    public void run(IStructuredSelection selection) {
        IResource resource = getResource(selection);
        if (!RefactoringAvailabilityTester.isRenameAvailable(resource))
            return;
        RefactoringExecutionStarter.startRenameResourceRefactoring(resource, getShell());
    }

    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;
    }
}