/*
* This file is part of muCommander, http://www.mucommander.com
* Copyright (C) 2002-2016 Maxence Bernard
*
* muCommander 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 3 of the License, or
* (at your option) any later version.
*
* muCommander 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, see <http://www.gnu.org/licenses/>.
*/
package com.mucommander.ui.viewer.text;
import com.mucommander.commons.file.AbstractFile;
import com.mucommander.commons.io.BinaryDetector;
import com.mucommander.text.Translator;
import com.mucommander.ui.viewer.*;
import java.io.IOException;
import java.io.InputStream;
/**
* <code>ViewerFactory</code> and <code>EditorFactory</code> implementation for creating text viewers and editors.
*
* @author Nicolas Rinaudo
*/
public class TextFactory implements ViewerFactory, EditorFactory {
public boolean canViewFile(AbstractFile file) throws WarnUserException {
return doGenericChecks(file);
}
public boolean canEditFile(AbstractFile file) throws WarnUserException {
return doGenericChecks(file);
}
public FileViewer createFileViewer() {
return new TextViewer();
}
public FileEditor createFileEditor() {
return new TextEditor();
}
private boolean doGenericChecks(AbstractFile file) throws WarnUserException {
// Do not allow directories
if(file.isDirectory())
return false;
// Warn the user if the file is large that a certain size as the whole file is loaded into memory
// (in a JTextArea)
if(file.getSize()>1048576)
throw new WarnUserException(Translator.get("file_viewer.large_file_warning"));
// Warn the user if the file looks like a binary file
InputStream in = null;
try {
in = file.getInputStream();
if(BinaryDetector.guessBinary(in))
return false;
}
catch(IOException e) {
// Not much too do
}
finally {
if(in!=null) {
try { in.close(); } catch(IOException e2) {}
}
}
return true;
}
}