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/* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic Le Coq
* Copyright (C) 2013 Marko Zivkovic
*
* Contact Information: marko88zivkovic at gmail dot com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version. This program is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details. You should have received a copy of the
* GNU General Public License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*
* This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
* during his Bachelor thesis at the computer science department of ETH Zurich,
* in the year 2013 and/or during future work.
*
* It is a reengineered version of XLogo written by Loic Le Coq, published
* under the GPL License at http://xlogo.tuxfamily.org/
*
* Contents of this file were entirely written by Marko Zivkovic
*/
package xlogo.kernel.userspace.context;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Map;
import xlogo.Logo;
import xlogo.kernel.userspace.files.LogoFile;
import xlogo.messages.MessageKeys;
import xlogo.messages.async.dialog.DialogMessenger;
import xlogo.storage.WSManager;
import xlogo.storage.global.GlobalConfig;
import xlogo.storage.user.UserConfig;
public class UserContext extends LogoContext
{
/**
* Load and parse all the files in current user's source directory. <br>
* This happens only once, in the constructor. <br>
* Refresh is currently not planned, but it would be easy to add.
*
* @param userDir
*/
public UserContext()
{
loadUserFiles();
}
private void loadUserFiles()
{
UserConfig userConfig = WSManager.getUserConfig();
if (userConfig.isVirtual())
return;
File sourceDir = userConfig.getSourceDirectory();
if (!sourceDir.exists())
sourceDir.mkdirs();
if (!sourceDir.isDirectory())
{
DialogMessenger.getInstance().dispatchMessage(Logo.messages.getString("ws.error.title"),
Logo.messages.getString("ws.error.userdir.not.dir"));
return;
}
StringBuilder ioErrors = new StringBuilder();
for (String fileName : getLogoFileNamesFromDirectory(sourceDir))
{
String name = fileName.substring(0, fileName.length() - GlobalConfig.LOGO_FILE_EXTENSION.length());
userConfig.addFile(name);
try
{
LogoFile file = LogoFile.loadFile(name);
getFilesTable().put(file.getPlainName(), file);
}
catch (IOException e)
{
ioErrors.append(e.toString());
ioErrors.append("\n\n");
}
}
// must remove files from fileOrder that could not be found anymore.
for (String fileName : new ArrayList<String>(userConfig.getFileOrder()))
{
if (!getFilesTable().containsKey(fileName))
userConfig.getFileOrder().remove(fileName);
}
if (ioErrors.length() > 0)
{
DialogMessenger.getInstance().dispatchMessage(Logo.messages.getString("ws.error.title"),
Logo.messages.getString("ws.error.could.not.load.logo.files") + "\n" + ioErrors.toString());
}
}
/**
* Caller must make sure that newName does not already exist.
*/
@Override
public void renameFile(String oldName, String newName)
{
super.renameFile(oldName, newName);
WSManager.getUserConfig().renameFile(oldName, newName);
}
@Override
public void createFile(String fileName, String text) throws IOException
{
/*
* Eager creation of files in file order list in user config.
*/
if (!WSManager.getUserConfig().isVirtual())
super.createFile(fileName, text);
else
{
LogoFile file = LogoFile.createNewVirtualFile(fileName);
file.setText(text);
getFilesTable().put(fileName, file);
installListeners(file);
}
WSManager.getUserConfig().addFile(fileName);
}
@Override
public void importFile(File path, String newFileName)
{
try
{
super.importFile(path, newFileName);
}
catch (IOException e)
{
DialogMessenger.getInstance().dispatchError(MessageKeys.GENERAL_ERROR_TITLE, "Could not import file : \n" + e.toString());
}
WSManager.getUserConfig().addFile(newFileName);
}
private String[] getLogoFileNamesFromDirectory(File dir)
{
return dir.list(new FilenameFilter(){
public boolean accept(File file, String name)
{
return name.endsWith(".lgo");
}
});
}
@Override
public String[] getFileOrder()
{
/*
* Lazy deletion from file order list in user config.
*/
ArrayList<String> list = new ArrayList<String>(WSManager.getUserConfig().getFileOrder());
Map<String,LogoFile> filesTable = getFilesTable();
if (filesTable.size() != list.size())
{
Iterator<String> iter = list.iterator();
String current;
while(iter.hasNext())
{
current = iter.next();
if(!filesTable.containsKey(current))
iter.remove();
}
}
return list.toArray(new String[list.size()]);
}
}
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