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/LGridDateEditor.h

@@ -8,14 +8,16 @@
  */
 
 #ifndef LGRIDDATEEDITOR_H
-#define	LGRIDDATEEDITOR_H
+#define LGRIDDATEEDITOR_H
 
 #include "LGridColEditor.h"
 #include "LBoundDatePickerCtrl.h"
+
 /**
  * Edits table data using an LBoundDatePickerCtrl.
  */
-class LGridDateEditor : public wxGridCellEditor, public LGridColEditor {
+class LGridDateEditor : public wxGridCellEditor, public LGridColEditor
+{
 public:
     /**
      * 
@@ -32,16 +34,16 @@ public:
      * @param id
      * @param evtHandler
      */
-    void Create (wxWindow *parent, wxWindowID id, wxEvtHandler *evtHandler);
+    void Create(wxWindow *parent, wxWindowID id, wxEvtHandler *evtHandler);
     /**
      * Creates m_control if necessary. Registers the editor in the grid's resultset.
      * @param row
      * @param col
      * @param grid
      */
-    void BeginEdit (int row, int col, wxGrid *grid);
-    wxGridCellEditor* Clone () const;
-    bool EndEdit (int row, int col, const wxGrid *grid, const wxString &oldval, wxString *newval);
+    void BeginEdit(int row, int col, wxGrid *grid);
+    wxGridCellEditor* Clone() const;
+    bool EndEdit(int row, int col, const wxGrid *grid, const wxString &oldval, wxString *newval);
     /**
      * Applies the editor value as returned by GetData() to the grid cell.
      * If the editor contains wxInvalidDateTime, the grid cell is set to an empty string.
@@ -49,11 +51,11 @@ public:
      * @param col
      * @param grid
      */
-    void ApplyEdit (int row, int col, wxGrid *grid);
+    void ApplyEdit(int row, int col, wxGrid *grid);
     /**
      * Deletes the editor, all pointers to the editor are set to NULL.
      */
-    void Reset ();
+    void Reset();
     /**
      * 
      * @return GetData(), or wxEmptyString if the editor control has not been created.
@@ -63,7 +65,11 @@ public:
      * Creates a wxDatePickerCtrl to be used as editor in form view.
      */
     wxControl* ProvideFormEditor(wxWindow * parent);
-    wxControl* GetFormEditor() const {return m_formEditor;}
+
+    wxControl* GetFormEditor() const
+    {
+        return m_formEditor;
+    }
     /**
      * Updates the grid cell and the editor. m_formEditor is deleted and set to NULL.
      * @param row
@@ -71,7 +77,7 @@ public:
      * @param grid
      */
     void SyncBack(const int row, const int col, wxGrid * grid);
-    
+
 private:
     wxDatePickerCtrl * m_formEditor;
     /**
@@ -80,5 +86,5 @@ private:
     LBoundDatePickerCtrl * m_BoundDatePicker;
 };
 
-#endif	/* LGRIDDATEEDITOR_H */
+#endif /* LGRIDDATEEDITOR_H */