Move (most) hardcoded defaults to MazeDefault

- harcoded values centralized
- IntegerField for JTextField containing numbers
- fix, can draw even if topleft position is not (0,0) ( ie if scrollbar were used )

java/org/artisanlogiciel/games/maze/gui/component/IntegerField.java

@@ -0,0 +1,65 @@
+package org.artisanlogiciel.games.maze.gui.component;
+
+import org.artisanlogiciel.games.maze.gui.Display;
+import org.artisanlogiciel.games.maze.gui.MazeDefault;
+
+import javax.swing.*;
+
+public class IntegerField
+{
+    JLabel mLabel;
+    JTextField mTextField;
+    long mDefaultValue;
+
+    public IntegerField(String label, long defaultValue)
+    {
+        mDefaultValue = defaultValue;
+        // DEPENDENCY
+        mLabel = new JLabel(MazeDefault.labels.getString(label));
+        mTextField = new JTextField("" + defaultValue);
+    }
+
+    public IntegerField(int defaultValue)
+    {
+        mDefaultValue = defaultValue;
+        mLabel = new JLabel("");
+        mTextField = new JTextField("" + defaultValue);
+    }
+
+
+    public JLabel getLabel()
+    {
+        return mLabel;
+    }
+
+    public JTextField getTextField()
+    {
+        return mTextField;
+    }
+
+    public int getValue()
+    {
+        try {
+            return Integer.parseInt(mTextField.getText());
+        }
+        catch (Exception e)
+        {
+            mTextField.setText("" + mDefaultValue);
+        }
+        return (int) mDefaultValue;
+    }
+
+    public long getLongValue()
+    {
+        try {
+            return Long.parseLong(mTextField.getText());
+        }
+        catch (Exception e)
+        {
+            mTextField.setText("" + mDefaultValue);
+        }
+        return (int) mDefaultValue;
+    }
+
+
+}

java/org/artisanlogiciel/games/maze/gui/component/Panel.java

@@ -0,0 +1,14 @@
+package org.artisanlogiciel.games.maze.gui.component;
+
+import javax.swing.*;
+
+public class Panel
+extends JPanel {
+
+    protected void addField(IntegerField pField)
+    {
+        add(pField.getLabel());
+        add(pField.getTextField());
+    }
+
+}