Added classes to manage simple tabular data of known structure using a

popup containing a wxGrid object.

BasePicker : Abstract class adding a popup to wxPickerBase  styled with
a wxTextCtrl.
BaseGridPicker : Abstract class adding a wxGrid in the popup.

JsonGridPickerCtrl : UI control storing the tabular data in a JSON
array.
LBoundJsonGridPicker : connect JsonGridPicker to database.
LGridJsonCellEditor : use LBoundJsonGridPicker in other wxGrid objects.
LGridJsonCellRenderer : render cell JSON data.

XmlGridPickerCtrl : UI control storing the tabular data in as XML
document.
LBoundXmlGridPicker : connect XmlGridPicker to database.
LGridXmlCellEditor : grid editor for LBoundXmlGridPicker.
LGridXmlCellRenderer : grid renderer for LBoundXmlGridPicker.

JsonHelper and XmlHelper : for applications to quickly get intent value
from database data..

The structure of managed tabular data :

Column 1 : Intent - this is what we want to store/edit. This can be
telephone numbers, email addresses, instant messaging addresses...
any single line piece of information that can exist many times for one
entity (person, company...).
Column 2 : Type - A short description of the intent : 'Home, Work,
Mobile, Fax, Other...'. It is displayed in a non editable wxComboBox.
Column 3 : Preferred - One line of data can be selected as the preferred
one. It is not mandatory, but it must be a single choice.
Column 4 : Notes - single line notes.

Adjust sql scripts and L7.dox.
Applied ANSI formatting style to all files.

Other changes :

Work around a nasty misbehavior.
Grid columns edited by a translated combobox expect full string
data as cell values. LResultSet::BEData() will report these mapped strings,
instead of database real data. LBoundComboBox::IsDirty() will always be
true even if the editor is unchanged once created.
Simplest workaround : disconnect m_BoundComboBox if unchanged.

LGridTextEditor::ProvideFormEditor() : set the form editor's value
explicitely.; wxTextCtrl does not interpret data it receives

LBoundControl::SetNull must be void.

LBoundGrid : Unbind:: instructions should limit to the widget's id, like Bind::

LConnection::GetReturnedKeys should return NULL.
LConnection::SetData should return void.

Notes : wxJSON must be configured with the same prefix as wxWidgets,
here /usr/local/{wxWidgets,wxWidgets-Release}.

L7/LLightPQResultSet.h

@@ -9,7 +9,7 @@
 
 #ifdef USE_LIBPQ
 #ifndef LLIGHTPQRESULTSET_H
-#define	LLIGHTPQRESULTSET_H
+#define LLIGHTPQRESULTSET_H
 
 #include <wx/wx.h>
 #include <libpq-fe.h>
@@ -21,49 +21,50 @@
  */
 namespace PQ
 {
+
+/**
+ * Scrollable minimal resultset for the PostgreSQL backend.
+ * 
+ * This class does not allow data modification and does not output any messages.
+ * The underlying SQL query may contain table and/or column aliases.
+ */
+class LLightPQResultSet : public LLightResultSet
+{
+public:
+    LLightPQResultSet();
+    LLightPQResultSet(LConnection * newConnection);
+    virtual ~LLightPQResultSet();
     /**
-     * Scrollable minimal resultset for the PostgreSQL backend.
-     * 
-     * This class does not allow data modification and does not output any messages.
-     * The underlying SQL query may contain table and/or column aliases.
+     * Updates and runs the SQL string.
+     * @param newSql
+     * @return 
      */
-    class LLightPQResultSet : public LLightResultSet
-    {
-    public:
-        LLightPQResultSet();
-        LLightPQResultSet(LConnection * newConnection);
-        virtual ~LLightPQResultSet();
-        /**
-         * Updates and runs the SQL string.
-         * @param newSql
-         * @return 
-         */
-        bool SetSQL(const wxString& newSql);
-        bool HasData() const;
-        bool Absolute(const unsigned int newRowIndex);
-        bool IsFirst() const;
-        bool IsLast() const;
-        bool First();
-        bool Next();
-        bool Previous();
-        bool Last();
-        const unsigned int GetRowCount() const;
-        const unsigned int GetColumnCount() const;
-        const wxString GetColumnName(const unsigned int colIndex) const;
-        const int GetColumnIndex(const wxString& colName) const;
-        const wxAny GetData(const int unsigned rowIdx, const unsigned int colIdx) const;
-        /**
-         * At current row.
-         * @param colName
-         * @return database table value or wxEmptyString.
-         */
-        const wxAny GetData(const wxString& colName) const;
+    bool SetSQL(const wxString& newSql);
+    bool HasData() const;
+    bool Absolute(const unsigned int newRowIndex);
+    bool IsFirst() const;
+    bool IsLast() const;
+    bool First();
+    bool Next();
+    bool Previous();
+    bool Last();
+    const unsigned int GetRowCount() const;
+    const unsigned int GetColumnCount() const;
+    const wxString GetColumnName(const unsigned int colIndex) const;
+    const int GetColumnIndex(const wxString& colName) const;
+    const wxAny GetData(const int unsigned rowIdx, const unsigned int colIdx) const;
+    /**
+     * At current row.
+     * @param colName
+     * @return database table value or wxEmptyString.
+     */
+    const wxAny GetData(const wxString& colName) const;
 
 
-    private:
-        bool RunSQL();
-    };
+private:
+    bool RunSQL();
+};
 
 }
-#endif	/* LLIGHTPQRESULTSET_H */
+#endif /* LLIGHTPQRESULTSET_H */
 #endif