MotodevPolicy.java

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * 
 * 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.motorola.studio.android.installer.policy;

import java.io.File;

import org.eclipse.core.runtime.Platform;
import org.eclipse.equinox.internal.p2.ui.sdk.SDKPolicy;
import org.eclipse.equinox.p2.operations.ProfileChangeOperation;
import org.eclipse.swt.widgets.Shell;

import com.motorola.studio.android.common.utilities.EclipseUtils;
import com.motorola.studio.android.common.utilities.FileUtil;
import com.motorola.studio.android.installer.i18n.InstallerNLS;

/**
 *  This class replaces the P2 Policy on MOTODEV Studio. This is responsible to verify if writing on the current install directory is writable.
 *  A error message is displayed if this occurs and the operation is aborted. 
 */
@SuppressWarnings("restriction")
public class MotodevPolicy extends SDKPolicy
{

    @Override
    public boolean continueWorkingWithOperation(ProfileChangeOperation operation, Shell shell)
    {
        boolean canContinue = super.continueWorkingWithOperation(operation, shell);

        if (canContinue)
        {
            //Check if it's possible to write on the current workbench location                
            //If not... display a message and return false.

            String installLocation = Platform.getInstallLocation().getURL().getFile();
            File tmpFile = new File(installLocation + File.separator + "erase.me"); //$NON-NLS-1$
            boolean canWrite = false;
            canWrite = FileUtil.canWrite(tmpFile);

            if (!canWrite)
            {
                EclipseUtils.showErrorDialog(
                        InstallerNLS.MotodevPolicy_Insufficient_Permissions_Title,
                        InstallerNLS.MotodevPolicy_Insufficient_Permissions_Message);
                canContinue = false;
            }
        }

        return canContinue;
    }
}