com.google.dart.tools.ui.internal.filesview.RefreshAction.java Source code

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Here is the source code for com.google.dart.tools.ui.internal.filesview.RefreshAction.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.filesview;

import com.google.dart.tools.ui.DartPluginImages;

import org.eclipse.core.resources.WorkspaceJob;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.window.SameShellProvider;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchCommandConstants;
import org.eclipse.ui.actions.WorkspaceModifyOperation;
import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
import org.eclipse.ui.internal.ide.StatusUtil;

import java.lang.reflect.InvocationTargetException;

/**
 * Standard action for refreshing selected resources in the workspace.
 */
@SuppressWarnings("restriction")
public class RefreshAction extends org.eclipse.ui.actions.RefreshAction {

    private final FilesView view;

    /**
     * Creates a new action.
     */
    public RefreshAction(FilesView view) {
        super(new SameShellProvider(view.getShell()));
        DartPluginImages.setLocalImageDescriptors(this, "refresh.gif");//$NON-NLS-1$
        setActionDefinitionId(IWorkbenchCommandConstants.FILE_REFRESH);
        this.view = view;
    }

    @Override
    public void run() {

        //viewer refresh smarts based on a similar action for the eclipse Resource Navigator
        //(see org.eclipse.ui.views.navigator.WorkspaceActionGroup)

        final IStatus[] errorStatus = new IStatus[1];
        errorStatus[0] = Status.OK_STATUS;
        final WorkspaceModifyOperation op = (WorkspaceModifyOperation) createOperation(errorStatus);
        WorkspaceJob job = new WorkspaceJob("refresh") { //$NON-NLS-1$

            @Override
            public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
                try {
                    op.run(monitor);
                    Shell shell = view.getShell();
                    if (shell != null && !shell.isDisposed()) {
                        shell.getDisplay().asyncExec(new Runnable() {
                            @Override
                            public void run() {
                                TreeViewer viewer = view.getViewer();
                                if (viewer != null && viewer.getControl() != null
                                        && !viewer.getControl().isDisposed()) {
                                    viewer.refresh();
                                }
                            }
                        });
                    }
                } catch (InvocationTargetException e) {
                    String msg = NLS.bind(IDEWorkbenchMessages.WorkspaceAction_logTitle, getClass().getName(),
                            e.getTargetException());
                    throw new CoreException(StatusUtil.newStatus(IStatus.ERROR, msg, e.getTargetException()));
                } catch (InterruptedException e) {
                    return Status.CANCEL_STATUS;
                }
                return errorStatus[0];
            }

        };
        ISchedulingRule rule = op.getRule();
        if (rule != null) {
            job.setRule(rule);
        }
        job.setUser(true);
        job.schedule();
    }

}