From 2af634d3576061d867542e729018f0de1b6604ca Mon Sep 17 00:00:00 2001
From: "Rafael C. Carrasco" <carrasco@ua.es>
Date: Tue, 3 Dec 2013 20:46:19 +0100
Subject: [PATCH] 1- Output file chooser now asks for confirmation in case of
 overwrite. 2- Preselected directory and file for output  takes prefix from
 ocr input file with new extension "_report.html".

---
 src/main/java/eu/digitisation/MainGUI.java    | 25 +++++---
 .../digitisation/gui/OutputFileSelector.java  | 63 +++++++++++++++++++
 2 files changed, 78 insertions(+), 10 deletions(-)
 create mode 100644 src/main/java/eu/digitisation/gui/OutputFileSelector.java

diff --git a/src/main/java/eu/digitisation/MainGUI.java b/src/main/java/eu/digitisation/MainGUI.java
index c80d363..6b83a3c 100644
--- a/src/main/java/eu/digitisation/MainGUI.java
+++ b/src/main/java/eu/digitisation/MainGUI.java
@@ -18,6 +18,7 @@
 package eu.digitisation;
 
 import eu.digitisation.gui.InputFileSelector;
+import eu.digitisation.gui.OutputFileSelector;
 import eu.digitisation.gui.Pulldown;
 import eu.digitisation.ocr.Report;
 import java.awt.*;
@@ -75,9 +76,6 @@ public MainGUI() {
         pane.add(trigger);
 
         repaint();
-
-
-
     }
 
     private boolean checkInputFiles() {
@@ -119,13 +117,20 @@ public void actionPerformed(ActionEvent e) {
                     ? System.getProperty("file.encoding")
                     : encodingsMenu.choice();
             boolean checked = checkInputFiles();
-            if (checked) {
-                files[3] = choose("output.html");
-                if (files[3] != null) {
-                    Report.report(files[0], encoding,
-                            files[1], encoding,
-                            files[2], files[3]);
-                }
+            if (checked) {          
+                    File dir = files[1].getParentFile();
+                    String name = files[1].getName().replaceAll("\\.\\w+","")
+                            + "_report.html";
+                    File prefile = new File(name);
+                    OutputFileSelector selector = new OutputFileSelector();
+                    
+                    files[3] = selector.choose(dir, prefile);
+                    if (files[3] != null) {
+                        Report.report(files[0], encoding,
+                                files[1], encoding,
+                                files[2], files[3]);
+                    }
+               
             }
         }
     }
diff --git a/src/main/java/eu/digitisation/gui/OutputFileSelector.java b/src/main/java/eu/digitisation/gui/OutputFileSelector.java
new file mode 100644
index 0000000..877401f
--- /dev/null
+++ b/src/main/java/eu/digitisation/gui/OutputFileSelector.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2013 Universidad de Alicante
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+package eu.digitisation.gui;
+
+import java.io.File;
+import javax.swing.JFileChooser;
+import javax.swing.JFrame;
+import javax.swing.JOptionPane;
+
+/**
+ * File chooser with confirmation dialog to avoid accidental overwrite
+ *
+ * @author R.C.C.
+ */
+public class OutputFileSelector extends JFileChooser {
+
+    private static final long serialVersionUID = 1L;
+
+    public OutputFileSelector() {
+        super();
+    }
+
+    /**
+     *
+     * @param dir the default directory
+     * @param file the preselected file
+     * @return the selected file
+     */
+    public File choose(File dir, File file) {
+        setCurrentDirectory(dir);
+        setSelectedFile(file);
+        int returnVal = showOpenDialog(OutputFileSelector.this);
+
+        if (returnVal == JFileChooser.APPROVE_OPTION) {
+            file = getSelectedFile();
+            if (file != null && file.exists()) {
+                int response = JOptionPane.showConfirmDialog(new JFrame().getContentPane(),
+                        "The file " + file.getName()
+                        + " already exists. Do you want to replace the existing file?",
+                        "Overwrite file", JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE);
+
+                return (response == JOptionPane.YES_NO_OPTION) ? file : null;
+            }
+            return file;
+        }
+        return null;
+    }
+}