csv editor read file with imperfections

src/net/torvald/terrarum/debuggerapp/CSVEditor.java

@@ -2,20 +2,26 @@ package net.torvald.terrarum.debuggerapp;
 
 import net.torvald.terrarum.utils.CSVFetcher;
 import org.apache.commons.csv.CSVFormat;
+import org.apache.commons.csv.CSVRecord;
 
 import javax.swing.*;
 import javax.swing.event.ListSelectionEvent;
 import javax.swing.event.ListSelectionListener;
+import javax.swing.table.DefaultTableModel;
 import java.awt.*;
 import java.awt.event.KeyEvent;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.io.StringReader;
+import java.util.List;
 import java.util.Properties;
+import java.util.Vector;
 
 /**
  * Should be made into its own artifact to build.
  *
+ * Only recognisable columns are read and saved, thus this app should be update when new properties are added.
+ *
  * Created by minjaesong on 2019-01-01.
  */
 public class CSVEditor extends JFrame {
@@ -27,26 +33,29 @@ public class CSVEditor extends JFrame {
     private final int TWO_DIGIT = 30;
     private final int ARBITRARY = 240;
     private int[] colWidth = new int[]{FOUR_DIGIT, FOUR_DIGIT, ARBITRARY, SIX_DIGIT, SIX_DIGIT, SIX_DIGIT, SIX_DIGIT, TWO_DIGIT, FOUR_DIGIT, FOUR_DIGIT, TWO_DIGIT, TWO_DIGIT, TWO_DIGIT, TWO_DIGIT, TWO_DIGIT, TWO_DIGIT, TWO_DIGIT, SIX_DIGIT, SIX_DIGIT, SIX_DIGIT, SIX_DIGIT};
-    private String[][] dummyData = new String[2][columns.length];
 
     private CSVFormat csvFormat = CSVFetcher.INSTANCE.getTerrarumCSVFormat();
 
+    private final int INITIAL_ROWS = 2;
+
     private JPanel panelSpreadSheet = new JPanel();
     private JPanel panelComment = new JPanel();
     private JSplitPane panelWorking = new JSplitPane(JSplitPane.VERTICAL_SPLIT, panelSpreadSheet, panelComment);
 
     private JMenuBar menuBar = new JMenuBar();
-    private JTable spreadsheet = new JTable(dummyData, columns);
+    private JTable spreadsheet = new JTable(new DefaultTableModel(columns, INITIAL_ROWS)); // it MUST be DefaultTableModel because that's what I'm using
     private JTextPane caption = new JTextPane();
     private JTextPane comment = new JTextPane();
     private JLabel statBar = new JLabel("Creating a new CSV. You can still open existing file.");
 
     private Properties props = new Properties();
+    private Properties lang = new Properties();
 
     public CSVEditor() {
         // setup application properties //
         try {
             props.load(new StringReader(captionProperties));
+            lang.load(new StringReader(translations));
         }
         catch (Throwable e) {
 
@@ -92,7 +101,54 @@ public class CSVEditor extends JFrame {
             {
                 this.setMnemonic(KeyEvent.VK_F);
 
-                add("Open…");
+                add("Open…").addMouseListener(new MouseAdapter() {
+                    @Override
+                    public void mousePressed(MouseEvent e) {
+                        // let's show generic warning first
+                        if (discardAgreed()) {
+
+                            // actually read file
+                            JFileChooser fileChooser = new JFileChooser() {
+                                {
+                                    setFileSelectionMode(JFileChooser.FILES_ONLY);
+                                    setMultiSelectionEnabled(false);
+                                }
+                            };
+
+                            fileChooser.showOpenDialog(null);
+
+                            if (fileChooser.getSelectedFile() != null) {
+                                List<CSVRecord> records = CSVFetcher.INSTANCE.readFromFile(
+                                        fileChooser.getSelectedFile().getAbsolutePath());
+
+                                // turn list of records into a spreadsheet
+
+                                // first dispose of any existing data
+                                ((DefaultTableModel) spreadsheet.getModel()).setRowCount(0);
+
+                                // then work on the file
+                                for (CSVRecord record : records) {
+                                    Vector newRow = new Vector(columns.length);
+
+                                    // construct newRow
+                                    for (String column : columns) {
+                                        String value = record.get(column);
+
+                                        newRow.add(spreadsheet.getColumnModel().getColumnIndex(column), value);
+                                    }
+
+                                    ((DefaultTableModel) spreadsheet.getModel()).addRow(newRow);
+                                }
+                            }
+                            else {
+                                // cancelled opening
+                                displayMessage("OPERATION_CANCELLED");
+                            }
+                        }
+
+                        // if discard cancelled, do nothing
+                    }
+                });
 
                 add("Save").addMouseListener(new MouseAdapter() {
                     @Override
@@ -113,6 +169,8 @@ public class CSVEditor extends JFrame {
             }
         });
 
+        menuBar.setSize(new Dimension(100, 18));
+
         // setup spreadsheet //
 
         // no resize
@@ -144,6 +202,10 @@ public class CSVEditor extends JFrame {
                 );
             }
         });
+
+
+        // will fix some components not "updating" at init, with some minor consequences...?
+        this.repaint();
     }
 
     public static void main(String[] args) {
@@ -195,10 +257,33 @@ public class CSVEditor extends JFrame {
         return sb.toString();
     }
 
+    private boolean discardAgreed() {
+        return 0 == JOptionPane.showOptionDialog(null,
+                lang.getProperty("WARNING_YOUR_DATA_WILL_GONE"),
+                null,
+                JOptionPane.DEFAULT_OPTION,
+                JOptionPane.WARNING_MESSAGE,
+                null,
+                new String[]{"OK", "Cancel"},
+                "Cancel"
+        );
+    }
+    private void displayMessage(String messageKey) {
+        JOptionPane.showOptionDialog(null,
+                lang.getProperty(messageKey),
+                null,
+                JOptionPane.DEFAULT_OPTION,
+                JOptionPane.INFORMATION_MESSAGE,
+                null,
+                new String[]{"OK", "Cancel"},
+                "Cancel"
+        );
+    }
+
     private String captionProperties =
             "" + // dummy string to make IDE happy with the auto indent
-                    "id=Block ID\n" +
-                    "drop=Drop ID\n" +
+                    "id=ID of this block\n" +
+                    "drop=ID of the block this very block should drop when mined\n" +
                     "name=String identifier of the block\n" +
                     "shdr=Shade Red (light absorption). Valid range 0.0-4.0\n" +
                     "shdg=Shade Green (light absorption). Valid range 0.0-4.0\n" +
@@ -218,4 +303,9 @@ public class CSVEditor extends JFrame {
                     "dlfn=Dynamic Light Function. 0=Static. Please see <strong>notes</strong>\n" +
                     "fv=Vertical friction when player slide on the cliff. 0 means not slide-able\n" +
                     "fr=Horizontal friction. &lt;16:slippery 16:regular &gt;16:sticky\n";
+
+    private String translations =
+            "" +
+                    "WARNING_YOUR_DATA_WILL_GONE=Existing edits will be lost, continue?\n" +
+                    "OPERATION_CANCELLED=Operation cancelled.\n";
 }