releng/org.eclipse.epp.installer.europa.javapackage/src/org/eclipse/epp/installer/europa/javapackage/DeleteFileOperation.java

package org.eclipse.epp.installer.europa.javapackage;

import java.io.File;
import java.text.MessageFormat;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.epp.installer.core.InstallOptions;
import org.eclipse.epp.installer.core.model.Context;
import org.eclipse.epp.installer.core.model.InstallOperation;

/**
 * <p>
 * Copyright (c) 2006, Instantiations, Inc.<br>
 * All Rights Reserved
 */
public class DeleteFileOperation extends InstallOperation {

	private File file;
	private InstallOptions options;

	private boolean doBackupOption;
	private boolean tempBackupOption;
	
	public DeleteFileOperation(InstallOptions options, File file) {
		this(options, file, IBackupOptions.OPTION_DO_BACKUP);
	}

	public DeleteFileOperation(InstallOptions options, File file, int settings) {
		if (options == null || file == null) {
			throw new IllegalArgumentException("file can't be null");
		}
		this.file = file;
		this.options = options;
		
		doBackupOption = ((settings & IBackupOptions.OPTION_DO_BACKUP) == IBackupOptions.OPTION_DO_BACKUP);
		tempBackupOption = ((settings & IBackupOptions.OPTION_TEMP_BACKUP) == IBackupOptions.OPTION_TEMP_BACKUP);
	}
	
	/**
	 * Method getErrorMessage.
	 * 
	 * @return String
	 */
	private String getErrorMessage() {
		String message = "Failed to delete file: " + file.getAbsolutePath();
		return message;
	}

	
	protected void prepare() throws Exception {
//		if (!options.isNobackup())
//	
//			if (file.exists())
//				if (doBackupOption)
//					if (tempBackupOption || options.isNorestore()) {
//						add(new BackupFileOperation(options, file, BackupManager.getBackupManager(), true));
//					} else {
//						add(new BackupFileOperation(options, file, BackupManager.getBackupManager(), false));
//					}
	}
	
	/**
	 * Method run.
	 * 
	 * @param installer
	 *            Context
	 * @return IStatus
	 */
	protected IStatus run(Context installer) {
		if (file.exists())
			if (!file.delete())
				return new Status(Status.WARNING, Context.PLUGIN_ID, 0,
						getErrorMessage(), null);
		
		return Status.OK_STATUS;
	}

	/**
	 * Method toString.
	 * @return String
	 */
	public String toString() {
		return MessageFormat.format("Deleting file {0}.",
				new String[] { file.getAbsolutePath() });
	}
	
	public boolean equals(Object o) {
		if(o instanceof DeleteFileOperation) {
			DeleteFileOperation dfo = (DeleteFileOperation)o;
			return file.equals(dfo.file);
		}
		return false;
	}
	
	public int hashCode() {
		return file.hashCode();
	}
}