com.google.dart.tools.ui.internal.util.DirectoryVerification.java Source code

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Here is the source code for com.google.dart.tools.ui.internal.util.DirectoryVerification.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.util;

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

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.osgi.service.datalocation.Location;
import org.eclipse.swt.widgets.Shell;

import java.io.File;
import java.io.IOException;
import java.net.URISyntaxException;

/**
 * A utility class to handle checking to see if a directory is legal to open in the editor.
 */
public class DirectoryVerification {

    public static IStatus getOpenDirectoryLocationStatus(File directory) {
        // disallow parent directories of the workspace
        try {
            Location workspaceLocation = Platform.getInstanceLocation();
            File workspaceDirectory = new File(workspaceLocation.getURL().toURI());

            String dirPath = directory.getCanonicalPath();
            String workspacePath = workspaceDirectory.getCanonicalPath();

            if (workspacePath.startsWith(dirPath)) {
                return new Status(IStatus.ERROR, DartToolsPlugin.PLUGIN_ID,
                        "Unable to open " + directory + " - it contains the Editor's workspace.");
            }
        } catch (IOException e) {

        } catch (URISyntaxException e) {

        }

        // discourage user home
        File userHomeDir = new File(System.getProperty("user.home"));

        if (directory.equals(userHomeDir)) {
            return new Status(IStatus.WARNING, DartToolsPlugin.PLUGIN_ID,
                    "Opening the user home directory is not recommended.");
        }

        return new Status(IStatus.OK, DartToolsPlugin.PLUGIN_ID, null);
    }

    public static boolean validateOpenDirectoryLocation(Shell shell, File directory) {
        IStatus status = getOpenDirectoryLocationStatus(directory);

        if (status.getSeverity() == IStatus.ERROR) {
            MessageDialog.openError(shell, "Unable to Open Directory", status.getMessage());

            return false;
        } else if (status.getSeverity() == IStatus.WARNING) {
            return MessageDialog.openConfirm(shell, "Confirm Open Directory",
                    status.getMessage() + "\nAre you sure you want to open this directory?");
        }

        return status.isOK();
    }

    private DirectoryVerification() {

    }

}