/*
* (C) Copyright IBM Corp. 1998-2004. All Rights Reserved.
*
* The program is provided "as is" without any warranty express or
* implied, including the warranty of non-infringement and the implied
* warranties of merchantibility and fitness for a particular purpose.
* IBM will not be liable for any damages suffered by you as a result
* of using the Program. In no event will IBM be liable for any
* special, indirect or consequential damages or lost profits even if
* IBM has been advised of the possibility of their occurrence. IBM
* will not be liable for any third party claims against you.
*/
package com.ibm.richtext.textapps;
import java.awt.FileDialog;
import java.awt.Frame;
import java.io.*;
import com.ibm.richtext.styledtext.MConstText;
import com.ibm.richtext.styledtext.MText;
public class FileUtils {
static final String COPYRIGHT =
"(C) Copyright IBM Corp. 1998-1999 - All Rights Reserved";
/**
* Present the user with a file dialog, and replace
* dest with the MText in the selected file, and return
* the file objct. If any errors occur, return null and
* do not modify dest.
*/
public static File userLoadMText(String title, MText dest, Frame owner) {
FileDialog dialog = new FileDialog(owner, title, FileDialog.LOAD);
dialog.show();
String fileStr = dialog.getFile();
String dirStr = dialog.getDirectory();
if (fileStr != null) {
File rval = new File(dirStr, fileStr);
MConstText src = loadMText(rval);
if (src != null) {
dest.replaceAll(src);
return rval;
}
}
return null;
}
/**
* Return the MText serialized in the given file.
* In case of an error return null.
*/
public static MConstText loadMText(File file) {
Throwable error;
try {
FileInputStream inStream = new FileInputStream(file);
ObjectInputStream objStream = new ObjectInputStream(inStream);
MConstText text = (MConstText) objStream.readObject();
inStream.close();
return text;
}
catch(IOException e) {
error = e;
}
catch(ClassNotFoundException e) {
error = e;
}
catch(ClassCastException e) {
error = e;
}
error.printStackTrace();
return null;
}
/**
* Prompt the user for the file if file is null. Then save the
* text in the file, if any.
*/
public static File userSaveMText(File file, String title, MConstText text, Frame owner) {
if (file == null) {
FileDialog dialog = new FileDialog(owner, title, FileDialog.SAVE);
dialog.show();
String fileStr = dialog.getFile();
String dirStr = dialog.getDirectory();
if (fileStr != null) {
file = new File(dirStr, fileStr);
}
}
if (file != null) {
saveMText(file, text);
}
return file;
}
public static void saveMText(File file, MConstText text) {
Throwable error;
try {
OutputStream outStream = new FileOutputStream(file);
ObjectOutputStream objStream = new ObjectOutputStream(outStream);
objStream.writeObject(text);
outStream.close();
return;
}
catch(IOException e) {
error = e;
}
catch(ClassCastException e) {
error = e;
}
error.printStackTrace();
}
}