/////////////////////////////////////////////////////////////////////////////
// Name:        samples/propgrid/propgrid.cpp
// Purpose:     wxPropertyGrid sample
// Author:      Jaakko Salli
// Created:     2004-09-25
// Copyright:   (c) Jaakko Salli
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

//
//
// NOTES
//
// * Examples of custom property classes are in sampleprops.cpp.
//
// * Additional ones can be found below.
//
// * Currently there is no example of a custom property editor. However,
//   SpinCtrl editor sample is well-commented. It can be found in
//   src/propgrid/advprops.cpp.
//
// * To find code that populates the grid with properties, search for
//   string "::Populate".
//
// * To find code that handles property grid changes, search for string
//   "::OnPropertyGridChange".
//

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"


// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWidgets headers)
#ifndef WX_PRECOMP
    #include "wx/wx.h"
#endif

#if !wxUSE_PROPGRID
    #error "Please set wxUSE_PROPGRID to 1 and rebuild the library."
#endif

#include "wx/numdlg.h"

// -----------------------------------------------------------------------


// Main propertygrid header.
#include "wx/propgrid/propgrid.h"

// Extra property classes.
#include "wx/propgrid/advprops.h"

// This defines wxPropertyGridManager.
#include "wx/propgrid/manager.h"

// XRC handler for wxPropertyGrid.
#include "wx/xrc/xh_propgrid.h"

#include "propgrid.h"
#include "sampleprops.h"

#if wxUSE_DATEPICKCTRL
    #include "wx/datectrl.h"
#endif

#include "wx/artprov.h"
#include "wx/dcbuffer.h" // for wxALWAYS_NATIVE_DOUBLE_BUFFER

#ifndef wxHAS_IMAGES_IN_RESOURCES
    #include "../sample.xpm"
#endif

#include "wx/popupwin.h"

#include <random>

static std::random_device s_rd;
static std::default_random_engine s_rng(s_rd());

// -----------------------------------------------------------------------
// wxSampleMultiButtonEditor
//   A sample editor class that has multiple buttons.
// -----------------------------------------------------------------------

class wxSampleMultiButtonEditor : public wxPGTextCtrlEditor
{
    wxDECLARE_DYNAMIC_CLASS(wxSampleMultiButtonEditor);
public:
    wxSampleMultiButtonEditor() = default;
    virtual ~wxSampleMultiButtonEditor() = default;

    virtual wxPGWindowList CreateControls( wxPropertyGrid* propGrid,
                                           wxPGProperty* property,
                                           const wxPoint& pos,
                                           const wxSize& sz ) const override;
    virtual bool OnEvent( wxPropertyGrid* propGrid,
                          wxPGProperty* property,
                          wxWindow* ctrl,
                          wxEvent& event ) const override;
};

wxIMPLEMENT_DYNAMIC_CLASS(wxSampleMultiButtonEditor, wxPGTextCtrlEditor);

wxPGWindowList wxSampleMultiButtonEditor::CreateControls( wxPropertyGrid* propGrid,
                                                          wxPGProperty* property,
                                                          const wxPoint& pos,
                                                          const wxSize& sz ) const
{
    // Create and populate buttons-subwindow
    wxPGMultiButton* buttons = new wxPGMultiButton( propGrid, sz );

    // Add two regular buttons
    buttons->Add( "..." );
    buttons->Add( "A" );
    // Add a bitmap button
    buttons->Add( wxArtProvider::GetBitmap(wxART_FOLDER) );

    // Create the 'primary' editor control (textctrl in this case)
    wxPGWindowList wndList = wxPGTextCtrlEditor::CreateControls
                             ( propGrid, property, pos,
                               buttons->GetPrimarySize() );

    // Finally, move buttons-subwindow to correct position and make sure
    // returned wxPGWindowList contains our custom button list.
    buttons->Finalize(propGrid, pos);

    wndList.SetSecondary( buttons );
    return wndList;
}

bool wxSampleMultiButtonEditor::OnEvent( wxPropertyGrid* propGrid,
                                         wxPGProperty* property,
                                         wxWindow* ctrl,
                                         wxEvent& event ) const
{
    if ( event.GetEventType() == wxEVT_BUTTON )
    {
        wxPGMultiButton* buttons = (wxPGMultiButton*) propGrid->GetEditorControlSecondary();

        if ( event.GetId() == buttons->GetButtonId(0) )
        {
            // Do something when the first button is pressed
            wxLogDebug("First button pressed");
            return false;  // Return false since value did not change
        }
        if ( event.GetId() == buttons->GetButtonId(1) )
        {
            // Do something when the second button is pressed
            wxMessageBox("Second button pressed");
            return false;  // Return false since value did not change
        }
        if ( event.GetId() == buttons->GetButtonId(2) )
        {
            // Do something when the third button is pressed
            wxMessageBox("Third button pressed");
            return false;  // Return false since value did not change
        }
    }
    return wxPGTextCtrlEditor::OnEvent(propGrid, property, ctrl, event);
}

// -----------------------------------------------------------------------
// Validator for wxValidator use sample
// -----------------------------------------------------------------------

#if wxUSE_VALIDATORS

// wxValidator for testing

class wxInvalidWordValidator : public wxValidator
{
public:

    wxInvalidWordValidator( const wxString& invalidWord )
        : wxValidator(), m_invalidWord(invalidWord)
    {
    }

    virtual wxObject* Clone() const override
    {
        return new wxInvalidWordValidator(m_invalidWord);
    }

    virtual bool Validate(wxWindow* WXUNUSED(parent)) override
    {
        wxTextCtrl* tc = wxDynamicCast(GetWindow(), wxTextCtrl);
        wxCHECK_MSG(tc, true, "validator window must be wxTextCtrl");

        wxString val = tc->GetValue();

        if ( val.find(m_invalidWord) == wxString::npos )
            return true;

        ::wxMessageBox(wxString::Format("%s is not allowed word",m_invalidWord),
                       "Validation Failure");

        return false;
    }

private:
    wxString    m_invalidWord;
};

#endif // wxUSE_VALIDATORS

// -----------------------------------------------------------------------
// wxVectorProperty
// -----------------------------------------------------------------------

// See propgridsample.h for wxVector3f class

WX_PG_IMPLEMENT_VARIANT_DATA_DUMMY_EQ(wxVector3f)

wxPG_IMPLEMENT_PROPERTY_CLASS(wxVectorProperty,wxPGProperty,TextCtrl)


wxVectorProperty::wxVectorProperty( const wxString& label,
                                              const wxString& name,
                                              const wxVector3f& value )
    : wxPGProperty(label,name)
{
    SetValue( WXVARIANT(value) );
    AddPrivateChild( new wxFloatProperty("X",wxPG_LABEL,value.x) );
    AddPrivateChild( new wxFloatProperty("Y",wxPG_LABEL,value.y) );
    AddPrivateChild( new wxFloatProperty("Z",wxPG_LABEL,value.z) );
}

void wxVectorProperty::RefreshChildren()
{
    if ( !HasAnyChild() ) return;
    const wxVector3f& vector = wxVector3fRefFromVariant(m_value);
    Item(0)->SetValue( vector.x );
    Item(1)->SetValue( vector.y );
    Item(2)->SetValue( vector.z );
}

wxVariant wxVectorProperty::ChildChanged( wxVariant& thisValue,
                                          int childIndex,
                                          wxVariant& childValue ) const
{
    wxVector3f vector;
    vector << thisValue;
    switch ( childIndex )
    {
        case 0: vector.x = childValue.GetDouble(); break;
        case 1: vector.y = childValue.GetDouble(); break;
        case 2: vector.z = childValue.GetDouble(); break;
    }
    wxVariant newVariant;
    newVariant << vector;
    return newVariant;
}


// -----------------------------------------------------------------------
// wxTriangleProperty
// -----------------------------------------------------------------------

// See propgridsample.h for wxTriangle class

WX_PG_IMPLEMENT_VARIANT_DATA_DUMMY_EQ(wxTriangle)

wxPG_IMPLEMENT_PROPERTY_CLASS(wxTriangleProperty,wxPGProperty,TextCtrl)


wxTriangleProperty::wxTriangleProperty( const wxString& label,
                                                  const wxString& name,
                                                  const wxTriangle& value)
    : wxPGProperty(label,name)
{
    SetValue( WXVARIANT(value) );
    AddPrivateChild( new wxVectorProperty("A",wxPG_LABEL,value.a) );
    AddPrivateChild( new wxVectorProperty("B",wxPG_LABEL,value.b) );
    AddPrivateChild( new wxVectorProperty("C",wxPG_LABEL,value.c) );
}

void wxTriangleProperty::RefreshChildren()
{
    if ( !HasAnyChild() ) return;
    const wxTriangle& triangle = wxTriangleRefFromVariant(m_value);
    Item(0)->SetValue( WXVARIANT(triangle.a) );
    Item(1)->SetValue( WXVARIANT(triangle.b) );
    Item(2)->SetValue( WXVARIANT(triangle.c) );
}

wxVariant wxTriangleProperty::ChildChanged( wxVariant& thisValue,
                                            int childIndex,
                                            wxVariant& childValue ) const
{
    wxTriangle triangle;
    triangle << thisValue;
    const wxVector3f& vector = wxVector3fRefFromVariant(childValue);
    switch ( childIndex )
    {
        case 0: triangle.a = vector; break;
        case 1: triangle.b = vector; break;
        case 2: triangle.c = vector; break;
    }
    wxVariant newVariant;
    newVariant << triangle;
    return newVariant;
}


// -----------------------------------------------------------------------
// wxSingleChoiceDialogAdapter (wxPGEditorDialogAdapter sample)
// -----------------------------------------------------------------------

class wxSingleChoiceDialogAdapter : public wxPGEditorDialogAdapter
{
public:

    wxSingleChoiceDialogAdapter( const wxPGChoices& choices )
        : wxPGEditorDialogAdapter(), m_choices(choices)
    {
    }

    virtual bool DoShowDialog( wxPropertyGrid* WXUNUSED(propGrid),
                               wxPGProperty* WXUNUSED(property) ) override
    {
        wxString s = ::wxGetSingleChoice("Message",
                                         "Caption",
                                         m_choices.GetLabels());
        if ( !s.empty() )
        {
            SetValue(s);
            return true;
        }

        return false;
    }

protected:
    const wxPGChoices&  m_choices;
};


class SingleChoiceProperty : public wxStringProperty
{
public:

    SingleChoiceProperty( const wxString& label,
                          const wxString& name = wxPG_LABEL,
                          const wxString& value = wxString() )
        : wxStringProperty(label, name, value)
    {
        // Prepare choices
        m_choices.Add("Cat");
        m_choices.Add("Dog");
        m_choices.Add("Gibbon");
        m_choices.Add("Otter");
    }

    // Set editor to have button
    virtual const wxPGEditor* DoGetEditorClass() const override
    {
        return wxPGEditor_TextCtrlAndButton;
    }

    // Set what happens on button click
    virtual wxPGEditorDialogAdapter* GetEditorDialog() const override
    {
        return new wxSingleChoiceDialogAdapter(m_choices);
    }

protected:
    wxPGChoices m_choices;
};

// -----------------------------------------------------------------------
// Menu IDs
// -----------------------------------------------------------------------

enum
{
    PGID = 1,
    ID_ABOUT,
    ID_QUIT,
    ID_APPENDPROP,
    ID_APPENDCAT,
    ID_INSERTPROP,
    ID_INSERTCAT,
    ID_ENABLE,
    ID_SETREADONLY,
    ID_HIDE,
    ID_BOOL_CHECKBOX,
    ID_DELETE,
    ID_DELETER,
    ID_DELETEALL,
    ID_UNSPECIFY,
    ID_ITERATE1,
    ID_ITERATE2,
    ID_ITERATE3,
    ID_ITERATE4,
    ID_CLEARMODIF,
    ID_FREEZE,
    ID_DUMPLIST,
    ID_COLOURSCHEME1,
    ID_COLOURSCHEME2,
    ID_COLOURSCHEME3,
    ID_CATCOLOURS,
    ID_SETBGCOLOUR,
    ID_SETBGCOLOURRECUR,
    ID_STATICLAYOUT,
    ID_POPULATE1,
    ID_POPULATE2,
    ID_COLLAPSE,
    ID_COLLAPSEALL,
    ID_GETVALUES,
    ID_SETVALUES,
    ID_SETVALUES2,
    ID_FITCOLUMNS,
    ID_CHANGEFLAGSITEMS,
    ID_TESTINSERTCHOICE,
    ID_TESTDELETECHOICE,
    ID_INSERTPAGE,
    ID_REMOVEPAGE,
    ID_SETSPINCTRLEDITOR,
    ID_SETPROPERTYVALUE,
    ID_TESTREPLACE,
    ID_SETCOLUMNS,
    ID_SETVIRTWIDTH,
    ID_SETPGDISABLED,
    ID_TESTXRC,
    ID_ENABLECOMMONVALUES,
    ID_SELECTSTYLE,
    ID_SAVESTATE,
    ID_RESTORESTATE,
    ID_RUNMINIMAL,
    ID_ENABLELABELEDITING,
    ID_VETOCOLDRAG,
#if wxUSE_HEADERCTRL
    ID_SHOWHEADER,
#endif
    ID_ONEXTENDEDKEYNAV,
    ID_SHOWPOPUP,
    ID_POPUPGRID
};

// -----------------------------------------------------------------------
// Event table
// -----------------------------------------------------------------------

wxBEGIN_EVENT_TABLE(FormMain, wxFrame)
    EVT_IDLE(FormMain::OnIdle)
    EVT_MOVE(FormMain::OnMove)
    EVT_SIZE(FormMain::OnResize)

    // This occurs when a property is selected
    EVT_PG_SELECTED( PGID, FormMain::OnPropertyGridSelect )
    // This occurs when a property value changes
    EVT_PG_CHANGED( PGID, FormMain::OnPropertyGridChange )
    // This occurs just prior a property value is changed
    EVT_PG_CHANGING( PGID, FormMain::OnPropertyGridChanging )
    // This occurs when a mouse moves over another property
    EVT_PG_HIGHLIGHTED( PGID, FormMain::OnPropertyGridHighlight )
    // This occurs when mouse is right-clicked.
    EVT_PG_RIGHT_CLICK( PGID, FormMain::OnPropertyGridItemRightClick )
    // This occurs when mouse is double-clicked.
    EVT_PG_DOUBLE_CLICK( PGID, FormMain::OnPropertyGridItemDoubleClick )
    // This occurs when propgridmanager's page changes.
    EVT_PG_PAGE_CHANGED( PGID, FormMain::OnPropertyGridPageChange )
    // This occurs when user starts editing a property label
    EVT_PG_LABEL_EDIT_BEGIN( PGID,
        FormMain::OnPropertyGridLabelEditBegin )
    // This occurs when user stops editing a property label
    EVT_PG_LABEL_EDIT_ENDING( PGID,
        FormMain::OnPropertyGridLabelEditEnding )
    // This occurs when property's editor button (if any) is clicked.
    EVT_BUTTON( PGID, FormMain::OnPropertyGridButtonClick )

    EVT_PG_ITEM_COLLAPSED( PGID, FormMain::OnPropertyGridItemCollapse )
    EVT_PG_ITEM_EXPANDED( PGID, FormMain::OnPropertyGridItemExpand )

    EVT_PG_COL_BEGIN_DRAG( PGID, FormMain::OnPropertyGridColBeginDrag )
    EVT_PG_COL_DRAGGING( PGID, FormMain::OnPropertyGridColDragging )
    EVT_PG_COL_END_DRAG( PGID, FormMain::OnPropertyGridColEndDrag )

    EVT_TEXT( PGID, FormMain::OnPropertyGridTextUpdate )

    //
    // Rest of the events are not property grid specific
    EVT_KEY_DOWN( FormMain::OnPropertyGridKeyEvent )
    EVT_KEY_UP( FormMain::OnPropertyGridKeyEvent )

    EVT_MENU( ID_APPENDPROP, FormMain::OnAppendPropClick )
    EVT_MENU( ID_APPENDCAT, FormMain::OnAppendCatClick )
    EVT_MENU( ID_INSERTPROP, FormMain::OnInsertPropClick )
    EVT_MENU( ID_INSERTCAT, FormMain::OnInsertCatClick )
    EVT_MENU( ID_DELETE, FormMain::OnDelPropClick )
    EVT_MENU( ID_DELETER, FormMain::OnDelPropRClick )
    EVT_MENU( ID_UNSPECIFY, FormMain::OnMisc )
    EVT_MENU( ID_DELETEALL, FormMain::OnClearClick )
    EVT_MENU( ID_ENABLE, FormMain::OnEnableDisable )
    EVT_MENU( ID_SETREADONLY, FormMain::OnSetReadOnly )
    EVT_MENU( ID_HIDE, FormMain::OnHide )
    EVT_MENU( ID_BOOL_CHECKBOX, FormMain::OnBoolCheckbox )

    EVT_MENU( ID_ITERATE1, FormMain::OnIterate1Click )
    EVT_MENU( ID_ITERATE2, FormMain::OnIterate2Click )
    EVT_MENU( ID_ITERATE3, FormMain::OnIterate3Click )
    EVT_MENU( ID_ITERATE4, FormMain::OnIterate4Click )
    EVT_MENU( ID_ONEXTENDEDKEYNAV, FormMain::OnExtendedKeyNav )
    EVT_MENU( ID_SETBGCOLOUR, FormMain::OnSetBackgroundColour )
    EVT_MENU( ID_SETBGCOLOURRECUR, FormMain::OnSetBackgroundColour )
    EVT_MENU( ID_CLEARMODIF, FormMain::OnClearModifyStatusClick )
    EVT_MENU( ID_FREEZE, FormMain::OnFreezeClick )
    EVT_MENU( ID_ENABLELABELEDITING, FormMain::OnEnableLabelEditing )
#if wxUSE_HEADERCTRL
    EVT_MENU( ID_SHOWHEADER, FormMain::OnShowHeader )
#endif
    EVT_MENU( ID_DUMPLIST, FormMain::OnDumpList )

    EVT_MENU( ID_COLOURSCHEME1, FormMain::OnColourScheme )
    EVT_MENU( ID_COLOURSCHEME2, FormMain::OnColourScheme )
    EVT_MENU( ID_COLOURSCHEME3, FormMain::OnColourScheme )
    EVT_MENU( ID_COLOURSCHEME4, FormMain::OnColourScheme )

    EVT_MENU( ID_ABOUT, FormMain::OnAbout )
    EVT_MENU( ID_QUIT, FormMain::OnCloseClick )

    EVT_MENU( ID_CATCOLOURS, FormMain::OnCatColours )
    EVT_MENU( ID_SETCOLUMNS, FormMain::OnSetColumns )
    EVT_MENU( ID_SETVIRTWIDTH, FormMain::OnSetVirtualWidth )
    EVT_MENU( ID_SETPGDISABLED, FormMain::OnSetGridDisabled )
    EVT_MENU( ID_TESTXRC, FormMain::OnTestXRC )
    EVT_MENU( ID_ENABLECOMMONVALUES, FormMain::OnEnableCommonValues )
    EVT_MENU( ID_SELECTSTYLE, FormMain::OnSelectStyle )

    EVT_MENU( ID_STATICLAYOUT, FormMain::OnMisc )
    EVT_MENU( ID_COLLAPSE, FormMain::OnMisc )
    EVT_MENU( ID_COLLAPSEALL, FormMain::OnMisc )

    EVT_MENU( ID_POPULATE1, FormMain::OnPopulateClick )
    EVT_MENU( ID_POPULATE2, FormMain::OnPopulateClick )

    EVT_MENU( ID_GETVALUES, FormMain::OnMisc )
    EVT_MENU( ID_SETVALUES, FormMain::OnMisc )
    EVT_MENU( ID_SETVALUES2, FormMain::OnMisc )

    EVT_MENU( ID_FITCOLUMNS, FormMain::OnFitColumnsClick )

    EVT_MENU( ID_CHANGEFLAGSITEMS, FormMain::OnChangeFlagsPropItemsClick )

    EVT_MENU( ID_TESTINSERTCHOICE, FormMain::OnInsertChoice )
    EVT_MENU( ID_TESTDELETECHOICE, FormMain::OnDeleteChoice )

    EVT_MENU( ID_INSERTPAGE, FormMain::OnInsertPage )
    EVT_MENU( ID_REMOVEPAGE, FormMain::OnRemovePage )

    EVT_MENU( ID_SAVESTATE, FormMain::OnSaveState )
    EVT_MENU( ID_RESTORESTATE, FormMain::OnRestoreState )

    EVT_MENU( ID_SETSPINCTRLEDITOR, FormMain::OnSetSpinCtrlEditorClick )
    EVT_MENU( ID_TESTREPLACE, FormMain::OnTestReplaceClick )
    EVT_MENU( ID_SETPROPERTYVALUE, FormMain::OnSetPropertyValue )

    EVT_MENU( ID_RUNMINIMAL, FormMain::OnRunMinimalClick )

    EVT_UPDATE_UI( ID_CATCOLOURS, FormMain::OnCatColoursUpdateUI )

    EVT_CONTEXT_MENU( FormMain::OnContextMenu )
    EVT_BUTTON(ID_SHOWPOPUP, FormMain::OnShowPopup)
wxEND_EVENT_TABLE()

// -----------------------------------------------------------------------

void FormMain::OnMove( wxMoveEvent& event )
{
    if ( !m_propGridManager )
    {
        // this check is here so the frame layout can be tested
        // without creating propertygrid
        event.Skip();
        return;
    }

    // Update position properties
    int x, y;
    GetPosition(&x,&y);

    wxPGProperty* id;

    // Must check if properties exist (as they may be deleted).

    // Using m_propGridManager, we can scan all pages automatically.
    id = m_propGridManager->GetPropertyByName( "X" );
    if ( id )
        m_propGridManager->SetPropertyValue( id, x );

    id = m_propGridManager->GetPropertyByName( "Y" );
    if ( id )
        m_propGridManager->SetPropertyValue( id, y );

    id = m_propGridManager->GetPropertyByName( "Position" );
    if ( id )
        m_propGridManager->SetPropertyValue( id, WXVARIANT(wxPoint(x,y)) );

    // Should always call event.Skip() in frame's MoveEvent handler
    event.Skip();
}

// -----------------------------------------------------------------------

void FormMain::OnResize( wxSizeEvent& event )
{
    if ( !m_propGridManager )
    {
        // this check is here so the frame layout can be tested
        // without creating propertygrid
        event.Skip();
        return;
    }

    // Update size properties
    int w, h;
    GetSize(&w,&h);

    wxPGProperty* id;
    wxPGProperty* p;

    // Must check if properties exist (as they may be deleted).

    // Using m_propGridManager, we can scan all pages automatically.
    p = m_propGridManager->GetPropertyByName( "Width" );
    if ( p && !p->IsValueUnspecified() )
        m_propGridManager->SetPropertyValue( p, w );

    p = m_propGridManager->GetPropertyByName( "Height" );
    if ( p && !p->IsValueUnspecified() )
        m_propGridManager->SetPropertyValue( p, h );

    id = m_propGridManager->GetPropertyByName ( "Size" );
    if ( id )
        m_propGridManager->SetPropertyValue( id, WXVARIANT(wxSize(w,h)) );

    // Should always call event.Skip() in frame's SizeEvent handler
    event.Skip();
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridChanging( wxPropertyGridEvent& event )
{
    wxPGProperty* p = event.GetProperty();

    if ( p->GetName() == "Font" )
    {
        int res =
        wxMessageBox(wxString::Format("'%s' is about to change (to variant of type '%s')\n\nAllow or deny?",
                                      p->GetName(),event.GetValue().GetType()),
                     "Testing wxEVT_PG_CHANGING", wxYES_NO, m_propGridManager);

        if ( res == wxNO )
        {
            wxASSERT(event.CanVeto());

            event.Veto();

            // Since we ask a question, it is better if we omit any validation
            // failure behaviour.
            event.SetValidationFailureBehavior(wxPGVFBFlags::Null);
        }
    }
}

//
// Note how we use three types of value getting in this method:
//   A) event.GetPropertyValueAsXXX
//   B) event.GetPropertValue, and then variant's GetXXX
//   C) grid's GetPropertyValueAsXXX(id)
//
void FormMain::OnPropertyGridChange( wxPropertyGridEvent& event )
{
    wxPGProperty* property = event.GetProperty();

    const wxString& name = property->GetName();

    // Properties store values internally as wxVariants, but it is preferred
    // to use the more modern wxAny at the interface level
    wxAny value = property->GetValue();

    // Don't handle 'unspecified' values
    if ( value.IsNull() )
        return;

    // Some settings are disabled outside Windows platform
    if ( name == "X" )
        SetSize( value.As<int>(), -1, -1, -1, wxSIZE_USE_EXISTING );
    else if ( name == "Y" )
    // wxPGVariantToInt is safe long int value getter
        SetSize ( -1, value.As<int>(), -1, -1, wxSIZE_USE_EXISTING );
    else if ( name == "Width" )
        SetSize ( -1, -1, value.As<int>(), -1, wxSIZE_USE_EXISTING );
    else if ( name == "Height" )
        SetSize ( -1, -1, -1, value.As<int>(), wxSIZE_USE_EXISTING );
    else if ( name == "Label" )
    {
        SetTitle( value.As<wxString>() );
    }
    else if ( name == "Password" )
    {
        // Do something very secret here...
    }
    else
    if ( name == "Font" )
    {
        wxFont font = value.As<wxFont>();
        wxASSERT( font.IsOk() );

        m_propGridManager->SetFont( font );
    }
    else
    if ( name == "Margin Colour" )
    {
        wxColourPropertyValue cpv = value.As<wxColourPropertyValue>();
        m_propGridManager->GetGrid()->SetMarginColour( cpv.m_colour );
    }
    else if ( name == "Cell Colour" )
    {
        wxColourPropertyValue cpv = value.As<wxColourPropertyValue>();
        m_propGridManager->GetGrid()->SetCellBackgroundColour( cpv.m_colour );
    }
    else if ( name == "Line Colour" )
    {
        wxColourPropertyValue cpv = value.As<wxColourPropertyValue>();
        m_propGridManager->GetGrid()->SetLineColour( cpv.m_colour );
    }
    else if ( name == "Cell Text Colour" )
    {
        wxColourPropertyValue cpv = value.As<wxColourPropertyValue>();
        m_propGridManager->GetGrid()->SetCellTextColour( cpv.m_colour );
    }
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridSelect( wxPropertyGridEvent& event )
{
    wxPGProperty* property = event.GetProperty();
    if ( property )
    {
        m_itemEnable->Enable( true );
        if ( property->IsEnabled() )
            m_itemEnable->SetItemLabel( "Disable" );
        else
            m_itemEnable->SetItemLabel( "Enable" );
    }
    else
    {
        m_itemEnable->Enable( false );
    }

#if wxUSE_STATUSBAR
    wxPGProperty* prop = event.GetProperty();
    wxStatusBar* sb = GetStatusBar();
    if ( prop )
    {
        wxString text("Selected: ");
        text += m_propGridManager->GetPropertyLabel( prop );
        sb->SetStatusText ( text );
    }
#endif
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridPageChange( wxPropertyGridEvent& WXUNUSED(event) )
{
#if wxUSE_STATUSBAR
    wxStatusBar* sb = GetStatusBar();
    wxString text("Page Changed: ");
    text += m_propGridManager->GetPageName(m_propGridManager->GetSelectedPage());
    sb->SetStatusText( text );
#endif
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridLabelEditBegin( wxPropertyGridEvent& event )
{
    wxLogMessage("wxPG_EVT_LABEL_EDIT_BEGIN(%s)",
                 event.GetProperty()->GetLabel());
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridLabelEditEnding( wxPropertyGridEvent& event )
{
    wxLogMessage("wxPG_EVT_LABEL_EDIT_ENDING(%s)",
                 event.GetProperty()->GetLabel());
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridHighlight( wxPropertyGridEvent& WXUNUSED(event) )
{
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridItemRightClick( wxPropertyGridEvent& event )
{
#if wxUSE_STATUSBAR
    wxPGProperty* prop = event.GetProperty();
    wxStatusBar* sb = GetStatusBar();
    if ( prop )
    {
        wxString text("Right-clicked: ");
        text += prop->GetLabel();
        text += ", name=";
        text += m_propGridManager->GetPropertyName(prop);
        sb->SetStatusText( text );
    }
    else
    {
        sb->SetStatusText( wxString() );
    }
#endif
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridItemDoubleClick( wxPropertyGridEvent& event )
{
#if wxUSE_STATUSBAR
    wxPGProperty* prop = event.GetProperty();
    wxStatusBar* sb = GetStatusBar();
    if ( prop )
    {
        wxString text("Double-clicked: ");
        text += prop->GetLabel();
        text += ", name=";
        text += m_propGridManager->GetPropertyName(prop);
        sb->SetStatusText ( text );
    }
    else
    {
        sb->SetStatusText ( wxString() );
    }
#endif
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridButtonClick ( wxCommandEvent& )
{
#if wxUSE_STATUSBAR
    wxPGProperty* prop = m_propGridManager->GetSelection();
    wxStatusBar* sb = GetStatusBar();
    if ( prop )
    {
        wxString text("Button clicked: ");
        text += m_propGridManager->GetPropertyLabel(prop);
        text += ", name=";
        text += m_propGridManager->GetPropertyName(prop);
        sb->SetStatusText( text );
    }
    else
    {
        ::wxMessageBox("SHOULD NOT HAPPEN!!!");
    }
#endif
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridItemCollapse( wxPropertyGridEvent& )
{
    wxLogMessage("Item was Collapsed");
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridItemExpand( wxPropertyGridEvent& )
{
    wxLogMessage("Item was Expanded");
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridColBeginDrag( wxPropertyGridEvent& event )
{
    if ( m_itemVetoDragging->IsChecked() )
    {
        wxLogMessage("Splitter %i resize was vetoed", event.GetColumn());
        event.Veto();
    }
    else
    {
        wxLogDebug("Splitter %i resize began", event.GetColumn());
    }
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridColDragging( wxPropertyGridEvent& event )
{
    wxUnusedVar(event);
    // For now, let's not spam the log output
    //wxLogDebug("Splitter %i is being resized", event.GetColumn());
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridColEndDrag( wxPropertyGridEvent& event )
{
    wxUnusedVar(event);
    wxLogDebug("Splitter %i resize ended", event.GetColumn());
}

// -----------------------------------------------------------------------

// EVT_TEXT handling
void FormMain::OnPropertyGridTextUpdate( wxCommandEvent& event )
{
    event.Skip();
}

// -----------------------------------------------------------------------

void FormMain::OnPropertyGridKeyEvent( wxKeyEvent& WXUNUSED(event) )
{
    // Occurs on wxGTK mostly, but not wxMSW.
}

// -----------------------------------------------------------------------

void FormMain::OnLabelTextChange( wxCommandEvent& WXUNUSED(event) )
{
// Uncomment following to allow property label modify in real-time
//    wxPGProperty& p = m_propGridManager->GetGrid()->GetSelection();
//    if ( !p.IsOk() ) return;
//    m_propGridManager->SetPropertyLabel( p, m_tcPropLabel->DoGetValue() );
}

// -----------------------------------------------------------------------

static const wxString _fs_windowstyle_labels[] = {
    "wxSIMPLE_BORDER",
    "wxDOUBLE_BORDER",
    "wxSUNKEN_BORDER",
    "wxRAISED_BORDER",
    "wxNO_BORDER",
    "wxTAB_TRAVERSAL",
    "wxWANTS_CHARS",
    "wxVSCROLL",
    "wxALWAYS_SHOW_SB",
    "wxCLIP_CHILDREN",
    "wxFULL_REPAINT_ON_RESIZE",
    };

static const long _fs_windowstyle_values[] = {
    wxSIMPLE_BORDER,
    wxDOUBLE_BORDER,
    wxSUNKEN_BORDER,
    wxRAISED_BORDER,
    wxNO_BORDER,
    wxTAB_TRAVERSAL,
    wxWANTS_CHARS,
    wxVSCROLL,
    wxALWAYS_SHOW_SB,
    wxCLIP_CHILDREN,
    wxFULL_REPAINT_ON_RESIZE
};

static const wxString _fs_framestyle_labels[] = {
    "wxCAPTION",
    "wxMINIMIZE",
    "wxMAXIMIZE",
    "wxCLOSE_BOX",
    "wxSTAY_ON_TOP",
    "wxSYSTEM_MENU",
    "wxRESIZE_BORDER",
    "wxFRAME_TOOL_WINDOW",
    "wxFRAME_NO_TASKBAR",
    "wxFRAME_FLOAT_ON_PARENT",
    "wxFRAME_SHAPED"
};

static const long _fs_framestyle_values[] = {
    wxCAPTION,
    wxMINIMIZE,
    wxMAXIMIZE,
    wxCLOSE_BOX,
    wxSTAY_ON_TOP,
    wxSYSTEM_MENU,
    wxRESIZE_BORDER,
    wxFRAME_TOOL_WINDOW,
    wxFRAME_NO_TASKBAR,
    wxFRAME_FLOAT_ON_PARENT,
    wxFRAME_SHAPED
};
void FormMain::OnTestXRC(wxCommandEvent& WXUNUSED(event))
{
#if wxUSE_XRC
    auto& xml = *wxXmlResource::Get();

    static bool s_added = false;
    if ( !s_added )
    {
        s_added = true;
        xml.InitAllHandlers();

        // This needs to be done in addition to initializing all the standard
        // handlers above.
        xml.AddHandler(new wxPropertyGridXmlHandler);
    }

    if ( !xml.Load("propgrid.xrc") )
    {
        wxLogError("XRC file couldn't be loaded.");
        return;
    }

    auto const frame = xml.LoadFrame(this, "propgrid");
    if ( !frame )
    {
        wxLogError("Property grid frame couldn't be loaded from XRC");
        return;
    }

    frame->Show();
#else
    wxMessageBox("Sorry, XRC support is not available in this build.");
#endif
}

void FormMain::OnEnableCommonValues(wxCommandEvent& WXUNUSED(event))
{
    wxPGProperty* prop = m_propGridManager->GetSelection();
    if ( prop )
        prop->EnableCommonValue();
    else
        wxMessageBox("First select a property");
}

void FormMain::PopulateWithStandardItems ()
{
    wxPropertyGridPage* pg = m_propGridManager->GetPage("Standard Items");

    // Append is ideal way to add items to wxPropertyGrid.
    pg->Append( new wxPropertyCategory("Appearance",wxPG_LABEL) );

    pg->Append( new wxStringProperty("Label",wxPG_LABEL,GetTitle()) );
    pg->Append( new wxFontProperty("Font",wxPG_LABEL) );
    pg->SetPropertyHelpString ( "Font", "Editing this will change font used in the property grid." );

    pg->Append( new wxSystemColourProperty("Margin Colour",wxPG_LABEL,
        pg->GetGrid()->GetMarginColour()) );

    pg->Append( new wxSystemColourProperty("Cell Colour",wxPG_LABEL,
        pg->GetGrid()->GetCellBackgroundColour()) );
    pg->Append( new wxSystemColourProperty("Cell Text Colour",wxPG_LABEL,
        pg->GetGrid()->GetCellTextColour()) );
    pg->Append( new wxSystemColourProperty("Line Colour",wxPG_LABEL,
        pg->GetGrid()->GetLineColour()) );
    pg->Append( new wxFlagsProperty("Window Styles",wxPG_LABEL,
        m_combinedFlags, GetWindowStyle()) );

    //pg->SetPropertyAttribute("Window Styles",wxPG_BOOL_USE_CHECKBOX,true,wxPG_RECURSE);

    pg->Append( new wxCursorProperty("Cursor",wxPG_LABEL) );

    pg->Append( new wxPropertyCategory("Position","PositionCategory") );
    pg->SetPropertyHelpString( "PositionCategory", "Change in items in this category will cause respective changes in frame." );

    // Let's demonstrate 'Units' attribute here

    // Note that we use many attribute constants instead of strings here
    // (for instance, wxPG_ATTR_MIN, instead of "min").
    // Using constant may reduce binary size.

    pg->Append( new wxIntProperty("Height",wxPG_LABEL,480L) );
    pg->SetPropertyAttribute("Height", wxPG_ATTR_MIN, 10L );
    pg->SetPropertyAttribute("Height", wxPG_ATTR_MAX, 2048L );
    pg->SetPropertyAttribute("Height", wxPG_ATTR_UNITS, "Pixels" );

    // Set value to unspecified so that Hint attribute will be demonstrated
    pg->SetPropertyValueUnspecified("Height");
    pg->SetPropertyAttribute("Height", wxPG_ATTR_HINT,
                             "Enter new height for window" );

    // Difference between hint and help string is that the hint is shown in
    // an empty value cell, while help string is shown either in the
    // description text box, as a tool tip, or on the status bar.
    pg->SetPropertyHelpString("Height",
        "This property uses attributes \"Units\" and \"Hint\".");

    pg->Append( new wxIntProperty("Width",wxPG_LABEL,640L) );
    pg->SetPropertyAttribute("Width", wxPG_ATTR_MIN, 10L );
    pg->SetPropertyAttribute("Width", wxPG_ATTR_MAX, 2048L );
    pg->SetPropertyAttribute("Width", wxPG_ATTR_UNITS, "Pixels" );

    pg->SetPropertyValueUnspecified("Width");
    pg->SetPropertyAttribute("Width", wxPG_ATTR_HINT,
                             "Enter new width for window" );
    pg->SetPropertyHelpString("Width",
        "This property uses attributes \"Units\" and \"Hint\".");

    pg->Append( new wxIntProperty("X",wxPG_LABEL,10L) );
    pg->SetPropertyAttribute("X", wxPG_ATTR_UNITS, "Pixels" );
    pg->SetPropertyHelpString("X", "This property uses \"Units\" attribute.");

    pg->Append( new wxIntProperty("Y",wxPG_LABEL,10L) );
    pg->SetPropertyAttribute("Y", wxPG_ATTR_UNITS, "Pixels" );
    pg->SetPropertyHelpString("Y", "This property uses \"Units\" attribute.");

    const wxString disabledHelpString = "This property is simply disabled. In order to have label disabled as well, "
                                       "you need to set wxPG_EX_GREY_LABEL_WHEN_DISABLED using SetExtraStyle.";

    pg->Append( new wxPropertyCategory("Environment",wxPG_LABEL) );
    pg->Append( new wxStringProperty("Operating System",wxPG_LABEL,::wxGetOsDescription()) );

    pg->Append( new wxStringProperty("User Id",wxPG_LABEL,::wxGetUserId()) );
    pg->Append( new wxDirProperty("User Home",wxPG_LABEL,::wxGetUserHome()) );
    pg->Append( new wxStringProperty("User Name",wxPG_LABEL,::wxGetUserName()) );

    // Disable some of them
    pg->DisableProperty( "Operating System" );
    pg->DisableProperty( "User Id" );
    pg->DisableProperty( "User Name" );

    pg->SetPropertyHelpString( "Operating System", disabledHelpString );
    pg->SetPropertyHelpString( "User Id", disabledHelpString );
    pg->SetPropertyHelpString( "User Name", disabledHelpString );

    pg->Append( new wxPropertyCategory("More Examples",wxPG_LABEL) );

    pg->Append( new wxFontDataProperty( "FontDataProperty", wxPG_LABEL) );
    pg->SetPropertyHelpString( "FontDataProperty",
        "This demonstrates wxFontDataProperty class defined in this sample app. "
        "It is exactly like wxFontProperty from the library, but also has colour sub-property."
        );

    pg->Append( new wxDirsProperty("DirsProperty",wxPG_LABEL) );
    pg->SetPropertyHelpString( "DirsProperty",
        "This demonstrates wxDirsProperty class defined in this sample app. "
        "It is built with WX_PG_IMPLEMENT_ARRAYSTRING_PROPERTY_WITH_VALIDATOR macro, "
        "with custom action (dir dialog popup) defined."
        );

    wxArrayDouble arrdbl;
    arrdbl.Add(-1.0);
    arrdbl.Add(-0.5);
    arrdbl.Add(0.0);
    arrdbl.Add(0.5);
    arrdbl.Add(1.0);

    pg->Append( new wxArrayDoubleProperty("ArrayDoubleProperty",wxPG_LABEL,arrdbl) );
    //pg->SetPropertyAttribute("ArrayDoubleProperty",wxPG_FLOAT_PRECISION,2L);
    pg->SetPropertyHelpString( "ArrayDoubleProperty",
        "This demonstrates wxArrayDoubleProperty class defined in this sample app. "
        "It is an example of a custom list editor property."
        );

    pg->Append( new wxLongStringProperty("Information",wxPG_LABEL,
        "Editing properties will have immediate effect on this window, "
        "and vice versa (at least in most cases, that is)."
        ) );
    pg->SetPropertyHelpString( "Information",
                               "This property is read-only." );

    pg->SetPropertyReadOnly( "Information", true );

    //
    // Set test information for cells in columns 3 and 4
    // (reserve column 2 for displaying units)
    wxPropertyGridIterator it;
    wxBitmap bmp = wxArtProvider::GetBitmap(wxART_FOLDER);

    for ( it = pg->GetGrid()->GetIterator();
          !it.AtEnd();
          ++it )
    {
        wxPGProperty* p = *it;
        if ( p->IsCategory() )
            continue;

        pg->SetPropertyCell( p, 3, "Cell 3", bmp );
        pg->SetPropertyCell( p, 4, "Cell 4", wxBitmapBundle(), *wxWHITE, *wxBLACK );
    }
}

// -----------------------------------------------------------------------

void FormMain::PopulateWithExamples ()
{
    wxPropertyGridPage* pg = m_propGridManager->GetPage("Examples");
    wxPGProperty* pid;
    wxPGProperty* prop;

    //pg->Append( new wxPropertyCategory("Examples (low priority)","Examples") );
    //pg->SetPropertyHelpString ( "Examples", "This category has example of (almost) every built-in property class." );

#if wxUSE_SPINBTN
    pg->Append( new wxIntProperty ( "SpinCtrl", wxPG_LABEL, 0L ) );

    pg->SetPropertyEditor( "SpinCtrl", wxPGEditor_SpinCtrl );
    pg->SetPropertyAttribute( "SpinCtrl", wxPG_ATTR_MIN, -2L );  // Use constants instead of string
    pg->SetPropertyAttribute( "SpinCtrl", wxPG_ATTR_MAX, 16384L );   // for reduced binary size.
    pg->SetPropertyAttribute( "SpinCtrl", wxPG_ATTR_SPINCTRL_STEP, 2L );
    pg->SetPropertyAttribute( "SpinCtrl", wxPG_ATTR_SPINCTRL_MOTION, true );
    //pg->SetPropertyAttribute( "SpinCtrl", wxPG_ATTR_SPINCTRL_WRAP, true );

    pg->SetPropertyHelpString( "SpinCtrl",
        "This is regular wxIntProperty, which editor has been "
        "changed to wxPGEditor_SpinCtrl. Note however that "
        "static wxPropertyGrid::RegisterAdditionalEditors() "
        "needs to be called prior to using it.");

#endif

    // Add bool property
    pg->Append( new wxBoolProperty( "BoolProperty", wxPG_LABEL, false ) );

    // Add bool property with check box
    pg->Append( new wxBoolProperty( "BoolProperty with CheckBox", wxPG_LABEL, false ) );
    pg->SetPropertyAttribute( "BoolProperty with CheckBox",
                              wxPG_BOOL_USE_CHECKBOX,
                              true );

    pg->SetPropertyHelpString( "BoolProperty with CheckBox",
        "Property attribute wxPG_BOOL_USE_CHECKBOX has been set to true." );

    prop = pg->Append( new wxFloatProperty("FloatProperty",
                                           wxPG_LABEL,
                                           1234500.23) );
    prop->SetAttribute(wxPG_ATTR_MIN, -100.12);

    // A string property that can be edited in a separate editor dialog.
    pg->Append( new wxLongStringProperty( "LongStringProperty", "LongStringProp",
        "This is much longer string than the first one. Edit it by clicking the button." ) );

    // A property that edits a wxArrayString.
    wxArrayString example_array;
    example_array.Add( "String 1");
    example_array.Add( "String 2");
    example_array.Add( "String 3");
    pg->Append( new wxArrayStringProperty( "ArrayStringProperty", wxPG_LABEL,
                                           example_array) );

    // Test adding same category multiple times ( should not actually create a new one )
    //pg->Append( new wxPropertyCategory("Examples (low priority)","Examples") );

    // A file selector property. Note that argument between name
    // and initial value is wildcard (format same as in wxFileDialog).
    prop = new wxFileProperty( "FileProperty", "TextFile" );
    pg->Append( prop );

    prop->SetAttribute(wxPG_FILE_WILDCARD,"Text Files (*.txt)|*.txt");
    prop->SetAttribute(wxPG_DIALOG_TITLE,"Custom File Dialog Title");
    prop->SetAttribute(wxPG_FILE_SHOW_FULL_PATH,false);

#ifdef __WXMSW__
    prop->SetAttribute(wxPG_FILE_SHOW_RELATIVE_PATH,"C:\\Windows");
    pg->SetPropertyValue(prop,"C:\\Windows\\System32\\msvcrt71.dll");
#endif

#if wxUSE_IMAGE
    // An image file property. Arguments are just like for FileProperty, but
    // wildcard is missing (it is autogenerated from supported image formats).
    // If you really need to override it, create property separately, and call
    // its SetWildcard method.
    pg->Append( new wxImageFileProperty( "ImageFile", wxPG_LABEL ) );
#endif

    pid = pg->Append( new wxColourProperty("ColourProperty",wxPG_LABEL,*wxRED) );
    pg->SetPropertyEditor( "ColourProperty", wxPGEditor_ComboBox );
    pg->GetProperty("ColourProperty")->SetAutoUnspecified(true);
    pg->SetPropertyHelpString( "ColourProperty",
        "wxPropertyGrid::SetPropertyEditor method has been used to change "
        "editor of this property to wxPGEditor_ComboBox)");

    pid = pg->Append( new wxColourProperty("ColourPropertyWithAlpha",
                                           wxPG_LABEL,
                                           wxColour(15, 200, 95, 128)) );
    pg->SetPropertyAttribute("ColourPropertyWithAlpha", wxPG_COLOUR_HAS_ALPHA, true);
    pg->SetPropertyHelpString("ColourPropertyWithAlpha",
        "Attribute \"HasAlpha\" is set to true for this property.");

    //
    // This demonstrates using alternative editor for colour property
    // to trigger colour dialog directly from button.
    pg->Append( new wxColourProperty("ColourProperty2",wxPG_LABEL,*wxGREEN) );

    //
    // wxEnumProperty does not store strings or even list of strings
    // ( so that's why they are static in function ).
    static const wxString enum_prop_labels[] = { "One Item",
        "Another Item", "One More", "This Is Last" };

    // this value array would be optional if values matched string indexes
    static long enum_prop_values[] = { 40, 80, 120, 160 };

    // note that the initial value (the last argument) is the actual value,
    // not index or anything like that. Thus, our value selects "Another Item".
    pg->Append( new wxEnumProperty("EnumProperty",wxPG_LABEL,
        wxArrayString(WXSIZEOF(enum_prop_labels), enum_prop_labels),
        wxArrayInt(enum_prop_values, enum_prop_values+ WXSIZEOF(enum_prop_values)), 80 ) );

    wxPGChoices soc;

    // use basic table from our previous example
    // can also set/add wxArrayStrings and wxArrayInts directly.
    soc.Set(wxArrayString(WXSIZEOF(enum_prop_labels), enum_prop_labels),
            wxArrayInt(enum_prop_values, enum_prop_values + WXSIZEOF(enum_prop_values)));

    // add extra items
    soc.Add( "Look, it continues", 200 );
    soc.Add( "Even More", 240 );
    soc.Add( "And More", 280 );
    soc.Add( "", 300);
    soc.Add( "True End of the List", 320 );

    // Test custom colours ([] operator of wxPGChoices returns
    // references to wxPGChoiceEntry).
    soc[1].SetFgCol(*wxRED);
    soc[1].SetBgCol(*wxLIGHT_GREY);
    soc[2].SetFgCol(*wxGREEN);
    soc[2].SetBgCol(*wxLIGHT_GREY);
    soc[3].SetFgCol(*wxBLUE);
    soc[3].SetBgCol(*wxLIGHT_GREY);
    soc[4].SetBitmap(wxArtProvider::GetBitmap(wxART_FOLDER));

    pg->Append( new wxEnumProperty("EnumProperty 2",
                                   wxPG_LABEL,
                                   soc,
                                  240) );
    pg->GetProperty("EnumProperty 2")->AddChoice("Testing Extra", 360);

    // Here we only display the original 'soc' choices
    pg->Append( new wxEnumProperty("EnumProperty 3",wxPG_LABEL,
        soc, 240 ) );

    // Test Hint attribute in EnumProperty
    pg->GetProperty("EnumProperty 3")->SetAttribute(wxPG_ATTR_HINT, "Dummy Hint");

    pg->SetPropertyHelpString("EnumProperty 3",
        "This property uses \"Hint\" attribute.");

    // 'soc' plus one exclusive extra choice "4th only"
    pg->Append( new wxEnumProperty("EnumProperty 4",wxPG_LABEL,
        soc, 240 ) );
    pg->GetProperty("EnumProperty 4")->AddChoice("4th only", 360);

    pg->SetPropertyHelpString("EnumProperty 4",
        "Should have one extra item when compared to EnumProperty 3");

    // Plus property value bitmap
    pg->Append( new wxEnumProperty("EnumProperty With Bitmap", "EnumProperty 5",
        soc, 280) );
    pg->SetPropertyHelpString("EnumProperty 5",
        "Should have bitmap in front of the displayed value");
    wxBitmap bmpVal = wxArtProvider::GetBitmap(wxART_REMOVABLE);
    pg->SetPropertyImage("EnumProperty 5", bmpVal);

    // Password property example.
    pg->Append( new wxStringProperty("Password",wxPG_LABEL, "password") );
    pg->SetPropertyAttribute( "Password", wxPG_STRING_PASSWORD, true );
    pg->SetPropertyHelpString( "Password",
        "Has attribute wxPG_STRING_PASSWORD set to true" );

    // String editor with dir selector button.
    pg->Append( new wxDirProperty( "DirProperty", wxPG_LABEL, ::wxGetUserHome()) );
    pg->SetPropertyAttribute( "DirProperty",
                              wxPG_DIALOG_TITLE,
                              "This is a custom dir dialog title" );

    // Add string property - first arg is label, second name, and third initial value
    pg->Append( new wxStringProperty ( "StringProperty", wxPG_LABEL ) );
    pg->SetPropertyMaxLength( "StringProperty", 6 );
    pg->SetPropertyHelpString( "StringProperty",
        "Max length of this text has been limited to 6, using wxPropertyGrid::SetPropertyMaxLength." );

    // Set value after limiting so that it will be applied
    pg->SetPropertyValue( "StringProperty", "some text" );

    //
    // Demonstrate "AutoComplete" attribute
    pg->Append( new wxStringProperty( "StringProperty AutoComplete",
                                      wxPG_LABEL ) );

    wxArrayString autoCompleteStrings;
    autoCompleteStrings.Add("One choice");
    autoCompleteStrings.Add("Another choice");
    autoCompleteStrings.Add("Another choice, yeah");
    autoCompleteStrings.Add("Yet another choice");
    autoCompleteStrings.Add("Yet another choice, bear with me");
    pg->SetPropertyAttribute( "StringProperty AutoComplete",
                              wxPG_ATTR_AUTOCOMPLETE,
                              autoCompleteStrings );

    pg->SetPropertyHelpString( "StringProperty AutoComplete",
        "AutoComplete attribute has been set for this property "
        "(try writing something beginning with 'a', 'o' or 'y').");

    // Add string property with arbitrarily wide bitmap in front of it. We
    // intentionally lower-than-typical row height here so that the ugly
    // scaling code won't be run.
    pg->Append( new wxStringProperty( "StringPropertyWithBitmap",
                wxPG_LABEL,
                "Test Text") );
    wxBitmap myTestBitmap1x(60, 15, 32);
    {
        wxMemoryDC mdc(myTestBitmap1x);
        mdc.SetBackground(*wxWHITE_BRUSH);
        mdc.Clear();
        mdc.SetPen(*wxBLACK_PEN);
        mdc.SetBrush(*wxWHITE_BRUSH);
        mdc.DrawRectangle(0, 0, 60, 15);
        mdc.DrawLine(0, 0, 59, 14);
        mdc.SetTextForeground(*wxBLACK);
        mdc.DrawText("x1", 0, 0);
    }
    wxBitmap myTestBitmap2x(120, 30, 32);
    {
        wxMemoryDC mdc(myTestBitmap2x);
        mdc.SetBackground(*wxWHITE_BRUSH);
        mdc.Clear();
        mdc.SetPen(wxPen(*wxBLUE, 2));
        mdc.SetBrush(*wxWHITE_BRUSH);
        mdc.DrawRectangle(0, 0, 120, 30);
        mdc.DrawLine(0, 0, 119, 31);
        mdc.SetTextForeground(*wxBLUE);
        wxFont f = mdc.GetFont();
        f.SetPointSize(2 * f.GetPointSize());
        mdc.SetFont(f);
        mdc.DrawText("x2", 0, 0);
    }
    myTestBitmap2x.SetScaleFactor(2);
    pg->SetPropertyImage( "StringPropertyWithBitmap", wxBitmapBundle::FromBitmaps(myTestBitmap1x, myTestBitmap2x));

    const wxString flagsPropLabels[] = { "Bit 0", "Bit 1", "Bit 2", "Bit 3"};
    long flagsPropValues[] = { 0x01, 0x02, 0x04, 0x08 };
    wxPGChoices flagsPropChoices(WXSIZEOF(flagsPropLabels), flagsPropLabels, flagsPropValues);
    pg->Append( new wxFlagsProperty("FlagsProperty", wxPG_LABEL, flagsPropChoices, 0x03 ) );
    pg->SetPropertyAttribute("FlagsProperty", wxPG_BOOL_USE_CHECKBOX, true);

    // Multi choice dialog.
    wxArrayString tchoices;
    tchoices.Add("Cabbage");
    tchoices.Add("Carrot");
    tchoices.Add("Onion");
    tchoices.Add("Potato");
    tchoices.Add("Strawberry");

    wxArrayString tchoicesValues;
    tchoicesValues.Add("Carrot");
    tchoicesValues.Add("Potato");

    pg->Append( new wxEnumProperty("EnumProperty X",wxPG_LABEL, tchoices ) );

    pg->Append( new wxMultiChoiceProperty( "MultiChoiceProperty", wxPG_LABEL,
                                           tchoices, tchoicesValues ) );
    pg->SetPropertyAttribute("MultiChoiceProperty", wxPG_ATTR_MULTICHOICE_USERSTRINGMODE, 1);

    pg->Append( new wxSizeProperty( "SizeProperty", "Size", GetSize() ) );
    pg->Append( new wxPointProperty( "PointProperty", "Position", GetPosition() ) );

    // UInt samples
    pg->Append( new wxUIntProperty( "UIntProperty", wxPG_LABEL, wxULongLong(wxULL(0xFEEEFEEEFEEE))));
    pg->SetPropertyAttribute( "UIntProperty", wxPG_UINT_PREFIX, wxPG_PREFIX_NONE );
    pg->SetPropertyAttribute( "UIntProperty", wxPG_UINT_BASE, wxPG_BASE_HEX );
    //pg->SetPropertyAttribute( "UIntProperty", wxPG_UINT_PREFIX, wxPG_PREFIX_NONE );
    //pg->SetPropertyAttribute( "UIntProperty", wxPG_UINT_BASE, wxPG_BASE_OCT );

    //
    // wxEditEnumProperty
    wxPGChoices eech;
    eech.Add("Choice 1");
    eech.Add("Choice 2");
    eech.Add("Choice 3");
    pg->Append( new wxEditEnumProperty("EditEnumProperty",
                                       wxPG_LABEL,
                                       eech,
                                       "Choice not in the list") );

    // Test Hint attribute in EditEnumProperty
    pg->GetProperty("EditEnumProperty")->SetAttribute(wxPG_ATTR_HINT, "Dummy Hint");

    //wxString v_;
    //wxTextValidator validator1(wxFILTER_NUMERIC,&v_);
    //pg->SetPropertyValidator( "EditEnumProperty", validator1 );

#if wxUSE_DATETIME
    //
    // wxDateTimeProperty
    pg->Append( new wxDateProperty("DateProperty", wxPG_LABEL, wxDateTime::Now() ) );

#if wxUSE_DATEPICKCTRL
    pg->SetPropertyAttribute( "DateProperty", wxPG_DATE_PICKER_STYLE,
                              (long)(wxDP_DROPDOWN |
                                     wxDP_SHOWCENTURY |
                                     wxDP_ALLOWNONE) );

    pg->SetPropertyHelpString( "DateProperty",
        "Attribute wxPG_DATE_PICKER_STYLE has been set to (long)"
        "(wxDP_DROPDOWN | wxDP_SHOWCENTURY | wxDP_ALLOWNONE)." );
#endif

#endif

    //
    // Add Triangle properties as both wxTriangleProperty and
    // a generic parent property (using wxStringProperty).
    //
    wxPGProperty* topId = pg->Append( new wxStringProperty("3D Object", wxPG_LABEL, "<composed>") );

    pid = pg->AppendIn( topId, new wxStringProperty("Triangle 1", "Triangle 1", "<composed>") );
    pg->AppendIn( pid, new wxVectorProperty( "A", wxPG_LABEL ) );
    pg->AppendIn( pid, new wxVectorProperty( "B", wxPG_LABEL ) );
    pg->AppendIn( pid, new wxVectorProperty( "C", wxPG_LABEL ) );

    pg->AppendIn( topId, new wxTriangleProperty( "Triangle 2", "Triangle 2" ) );

    pg->SetPropertyHelpString( "3D Object",
        "3D Object is wxStringProperty with value \"<composed>\". Two of its children are similar wxStringProperties with "
        "three wxVectorProperty children, and other two are custom wxTriangleProperties." );

    pid = pg->AppendIn( topId, new wxStringProperty("Triangle 3", "Triangle 3", "<composed>") );
    pg->AppendIn( pid, new wxVectorProperty( "A", wxPG_LABEL ) );
    pg->AppendIn( pid, new wxVectorProperty( "B", wxPG_LABEL ) );
    pg->AppendIn( pid, new wxVectorProperty( "C", wxPG_LABEL ) );

    pg->AppendIn( topId, new wxTriangleProperty( "Triangle 4", "Triangle 4" ) );

    //
    // This snippet is a doc sample test
    //
    wxPGProperty* carProp = pg->Append(new wxStringProperty("Car",
                                         wxPG_LABEL,
                                         "<composed>"));

    pg->AppendIn(carProp, new wxStringProperty("Model",
                                                wxPG_LABEL,
                                                "Lamborghini Diablo SV"));

    pg->AppendIn(carProp, new wxIntProperty("Engine Size (cc)",
                                            wxPG_LABEL,
                                            5707L) );

    wxPGProperty* speedsProp = pg->AppendIn(carProp,
                                            new wxStringProperty("Speeds",
                                              wxPG_LABEL,
                                              "<composed>"));

    pg->AppendIn( speedsProp, new wxIntProperty("Max. Speed (mph)",
                                                wxPG_LABEL,290L) );
    pg->AppendIn( speedsProp, new wxFloatProperty("0-100 mph (sec)",
                                                  wxPG_LABEL,3.9) );
    pg->AppendIn( speedsProp, new wxFloatProperty("1/4 mile (sec)",
                                                  wxPG_LABEL,8.6) );

    // This is how child property can be referred to by name
    pg->SetPropertyValue( "Car.Speeds.Max. Speed (mph)", 300 );

    pg->AppendIn(carProp, new wxIntProperty("Price ($)",
                                            wxPG_LABEL,
                                            300000L) );

    pg->AppendIn(carProp, new wxBoolProperty("Convertible",
                                             wxPG_LABEL,
                                             false) );

    // Displayed value of "Car" property is now very close to this:
    // "Lamborghini Diablo SV; 5707 [300; 3.9; 8.6] 300000"

    //
    // Test wxSampleMultiButtonEditor
    pg->Append( new wxLongStringProperty("MultipleButtons", wxPG_LABEL) );
    pg->SetPropertyEditor("MultipleButtons", m_sampleMultiButtonEditor );

    // Test SingleChoiceProperty
    pg->Append( new SingleChoiceProperty("SingleChoiceProperty") );


    //
    // Test adding variable height bitmaps in wxPGChoices
    wxPGChoices bc;
    bc.Add("Wee",
             wxArtProvider::GetBitmap(wxART_CDROM, wxART_OTHER, wxSize(16, 16)));
    bc.Add("Not so wee",
             wxArtProvider::GetBitmap(wxART_FLOPPY, wxART_OTHER, wxSize(32, 32)));
    bc.Add("Friggin' huge",
             wxArtProvider::GetBitmap(wxART_HARDDISK, wxART_OTHER, wxSize(64, 64)));

    pg->Append( new wxEnumProperty("Variable Height Bitmaps",
                                   wxPG_LABEL,
                                   bc,
                                   0) );

    //
    // Test how non-editable composite strings appear
    pid = new wxStringProperty("wxWidgets Traits", wxPG_LABEL, "<composed>");
    pg->SetPropertyReadOnly(pid);

    //
    // For testing purposes, combine two methods of adding children
    //

    pid->AppendChild( new wxStringProperty("Latest Release",
                                           wxPG_LABEL,
                                           "3.1.2"));
    pid->AppendChild( new wxBoolProperty("Win API",
                                         wxPG_LABEL,
                                         true) );

    pg->Append( pid );

    pg->AppendIn(pid, new wxBoolProperty("QT", wxPG_LABEL, true) );
    pg->AppendIn(pid, new wxBoolProperty("Cocoa", wxPG_LABEL, true) );
    pg->AppendIn(pid, new wxBoolProperty("Haiku", wxPG_LABEL, false) );
    pg->AppendIn(pid, new wxStringProperty("Trunk Version", wxPG_LABEL, wxVERSION_NUM_DOT_STRING));
    pg->AppendIn(pid, new wxBoolProperty("GTK+", wxPG_LABEL, true) );
    pg->AppendIn(pid, new wxBoolProperty("Android", wxPG_LABEL, false) );

    AddTestProperties(pg);
}

// -----------------------------------------------------------------------

void FormMain::PopulateWithLibraryConfig ()
{
    wxPropertyGridPage* pg = m_propGridManager->GetPage("wxWidgets Library Config");

    // Set custom column proportions (here in the sample app we need
    // to check if the grid has wxPG_SPLITTER_AUTO_CENTER style. You usually
    // need not to do it in your application).
    if ( m_propGridManager->HasFlag(wxPG_SPLITTER_AUTO_CENTER) )
    {
        pg->SetColumnProportion(0, 3);
        pg->SetColumnProportion(1, 1);
    }

    wxPGProperty* cat;

    wxBitmap bmp = wxArtProvider::GetBitmap(wxART_REPORT_VIEW);

    wxPGProperty* pid;

    wxFont italicFont = m_propGridManager->GetGrid()->GetCaptionFont();
    italicFont.SetStyle(wxFONTSTYLE_ITALIC);

    wxString italicFontHelp = "Font of this property's wxPGCell has "
                              "been modified. Obtain property's cell "
                              "with wxPGProperty::"
                              "GetOrCreateCell(column).";

#define ADD_WX_LIB_CONF_GROUP(A) \
    cat = pg->AppendIn( pid, new wxPropertyCategory(A) ); \
    pg->SetPropertyCell( cat, 0, wxPG_LABEL, bmp ); \
    cat->GetCell(0).SetFont(italicFont); \
    cat->SetHelpString(italicFontHelp);

#define ADD_WX_LIB_CONF(A) pg->Append( new wxBoolProperty(#A,wxPG_LABEL,(bool)((A>0)?true:false)));
#define ADD_WX_LIB_CONF_NODEF(A) pg->Append( new wxBoolProperty(#A,wxPG_LABEL,(bool)false) ); \
                            pg->DisableProperty(#A);

    pid = pg->Append( new wxPropertyCategory( "wxWidgets Library Configuration" ) );
    pg->SetPropertyCell( pid, 0, wxPG_LABEL, bmp );

    // Both of following lines would set a label for the second column
    pg->SetPropertyCell( pid, 1, "Is Enabled" );
    pid->SetValue("Is Enabled");

    ADD_WX_LIB_CONF_GROUP("Global Settings")
    ADD_WX_LIB_CONF( wxUSE_GUI )

    ADD_WX_LIB_CONF_GROUP("Compatibility Settings")
#if defined(WXWIN_COMPATIBILITY_3_0)
    ADD_WX_LIB_CONF( WXWIN_COMPATIBILITY_3_0 )
#endif
#if defined(WXWIN_COMPATIBILITY_3_2)
    ADD_WX_LIB_CONF( WXWIN_COMPATIBILITY_3_2 )
#endif
#ifdef wxFONT_SIZE_COMPATIBILITY
    ADD_WX_LIB_CONF( wxFONT_SIZE_COMPATIBILITY )
#else
    ADD_WX_LIB_CONF_NODEF ( wxFONT_SIZE_COMPATIBILITY )
#endif
#ifdef wxDIALOG_UNIT_COMPATIBILITY
    ADD_WX_LIB_CONF( wxDIALOG_UNIT_COMPATIBILITY )
#else
    ADD_WX_LIB_CONF_NODEF ( wxDIALOG_UNIT_COMPATIBILITY )
#endif

    ADD_WX_LIB_CONF_GROUP("Debugging Settings")
    ADD_WX_LIB_CONF( wxUSE_DEBUGREPORT )
    ADD_WX_LIB_CONF( wxUSE_STACKWALKER )
    ADD_WX_LIB_CONF( wxUSE_ON_FATAL_EXCEPTION )

    ADD_WX_LIB_CONF_GROUP("Unicode Support")
    ADD_WX_LIB_CONF( wxUSE_UNICODE )

    ADD_WX_LIB_CONF_GROUP("Global Features")
    ADD_WX_LIB_CONF( wxUSE_EXCEPTIONS )
    ADD_WX_LIB_CONF( wxUSE_EXTENDED_RTTI )
    ADD_WX_LIB_CONF( wxUSE_STD_CONTAINERS )
    ADD_WX_LIB_CONF( wxUSE_LOG )
    ADD_WX_LIB_CONF( wxUSE_LOGWINDOW )
    ADD_WX_LIB_CONF( wxUSE_LOGGUI )
    ADD_WX_LIB_CONF( wxUSE_LOG_DIALOG )
    ADD_WX_LIB_CONF( wxUSE_CMDLINE_PARSER )
    ADD_WX_LIB_CONF( wxUSE_THREADS )
    ADD_WX_LIB_CONF( wxUSE_STREAMS )
    ADD_WX_LIB_CONF( wxUSE_STD_IOSTREAM )

    ADD_WX_LIB_CONF_GROUP("Non-GUI Features")
    ADD_WX_LIB_CONF( wxUSE_FILE )
    ADD_WX_LIB_CONF( wxUSE_FFILE )
    ADD_WX_LIB_CONF( wxUSE_FSVOLUME )
    ADD_WX_LIB_CONF( wxUSE_TEXTBUFFER )
    ADD_WX_LIB_CONF( wxUSE_TEXTFILE )
    ADD_WX_LIB_CONF( wxUSE_INTL )
    ADD_WX_LIB_CONF( wxUSE_DATETIME )
    ADD_WX_LIB_CONF( wxUSE_TIMER )
    ADD_WX_LIB_CONF( wxUSE_STOPWATCH )
    ADD_WX_LIB_CONF( wxUSE_CONFIG )
#ifdef wxUSE_CONFIG_NATIVE
    ADD_WX_LIB_CONF( wxUSE_CONFIG_NATIVE )
#else
    ADD_WX_LIB_CONF_NODEF ( wxUSE_CONFIG_NATIVE )
#endif
    ADD_WX_LIB_CONF( wxUSE_DIALUP_MANAGER )
    ADD_WX_LIB_CONF( wxUSE_DYNLIB_CLASS )
    ADD_WX_LIB_CONF( wxUSE_DYNAMIC_LOADER )
    ADD_WX_LIB_CONF( wxUSE_SOCKETS )
    ADD_WX_LIB_CONF( wxUSE_FILESYSTEM )
    ADD_WX_LIB_CONF( wxUSE_FS_ZIP )
    ADD_WX_LIB_CONF( wxUSE_FS_INET )
    ADD_WX_LIB_CONF( wxUSE_ZIPSTREAM )
    ADD_WX_LIB_CONF( wxUSE_ZLIB )
    ADD_WX_LIB_CONF( wxUSE_APPLE_IEEE )
    ADD_WX_LIB_CONF( wxUSE_JOYSTICK )
    ADD_WX_LIB_CONF( wxUSE_FONTMAP )
    ADD_WX_LIB_CONF( wxUSE_MIMETYPE )
    ADD_WX_LIB_CONF( wxUSE_PROTOCOL )
    ADD_WX_LIB_CONF( wxUSE_PROTOCOL_FILE )
    ADD_WX_LIB_CONF( wxUSE_PROTOCOL_FTP )
    ADD_WX_LIB_CONF( wxUSE_PROTOCOL_HTTP )
    ADD_WX_LIB_CONF( wxUSE_URL )
#ifdef wxUSE_URL_NATIVE
    ADD_WX_LIB_CONF( wxUSE_URL_NATIVE )
#else
    ADD_WX_LIB_CONF_NODEF ( wxUSE_URL_NATIVE )
#endif
    ADD_WX_LIB_CONF( wxUSE_REGEX )
    ADD_WX_LIB_CONF( wxUSE_SYSTEM_OPTIONS )
    ADD_WX_LIB_CONF( wxUSE_SOUND )
#ifdef wxUSE_XRC
    ADD_WX_LIB_CONF( wxUSE_XRC )
#else
    ADD_WX_LIB_CONF_NODEF ( wxUSE_XRC )
#endif
    ADD_WX_LIB_CONF( wxUSE_XML )

    // Set them to use check box.
    pg->SetPropertyAttribute(pid,wxPG_BOOL_USE_CHECKBOX,true, wxPGPropertyValuesFlags::Recurse);
}

// -----------------------------------------------------------------------

void FormMain::AddTestProperties(wxPropertyGridPage* pg)
{
    pg->Append(new MyColourProperty("CustomColourProperty", wxPG_LABEL, *wxGREEN));
    pg->GetProperty("CustomColourProperty")->SetAutoUnspecified(true);
    pg->SetPropertyEditor("CustomColourProperty", wxPGEditor_ComboBox);

    pg->SetPropertyHelpString("CustomColourProperty",
        "This is a MyColourProperty from the sample app. "
        "It is built by subclassing wxColourProperty.");
}

// -----------------------------------------------------------------------

//
// Handle events of the third page here.
class wxMyPropertyGridPage : public wxPropertyGridPage
{
public:

    // Return false here to indicate unhandled events should be
    // propagated to manager's parent, as normal.
    virtual bool IsHandlingAllEvents() const override { return false; }

protected:

    virtual wxPGProperty* DoInsert( wxPGProperty* parent,
                                    int index,
                                    wxPGProperty* property ) override
    {
        return wxPropertyGridPage::DoInsert(parent,index,property);
    }

    void OnPropertySelect( wxPropertyGridEvent& event );
    void OnPropertyChanging( wxPropertyGridEvent& event );
    void OnPropertyChange( wxPropertyGridEvent& event );
    void OnPageChange( wxPropertyGridEvent& event );

private:
    wxDECLARE_EVENT_TABLE();
};


wxBEGIN_EVENT_TABLE(wxMyPropertyGridPage, wxPropertyGridPage)
    EVT_PG_SELECTED( wxID_ANY, wxMyPropertyGridPage::OnPropertySelect )
    EVT_PG_CHANGING( wxID_ANY, wxMyPropertyGridPage::OnPropertyChanging )
    EVT_PG_CHANGED( wxID_ANY, wxMyPropertyGridPage::OnPropertyChange )
    EVT_PG_PAGE_CHANGED( wxID_ANY, wxMyPropertyGridPage::OnPageChange )
wxEND_EVENT_TABLE()


void wxMyPropertyGridPage::OnPropertySelect( wxPropertyGridEvent& event )
{
    wxPGProperty* p = event.GetProperty();
    wxUnusedVar(p);
    wxLogDebug("wxMyPropertyGridPage::OnPropertySelect('%s' is %s",
               p->GetName(),
               IsPropertySelected(p)? "selected": "unselected");
}

void wxMyPropertyGridPage::OnPropertyChange( wxPropertyGridEvent& event )
{
    wxPGProperty* p = event.GetProperty();
    wxLogVerbose("wxMyPropertyGridPage::OnPropertyChange('%s', to value '%s')",
               p->GetName(),
               p->GetDisplayedString());
}

void wxMyPropertyGridPage::OnPropertyChanging( wxPropertyGridEvent& event )
{
    wxPGProperty* p = event.GetProperty();
    wxLogVerbose("wxMyPropertyGridPage::OnPropertyChanging('%s', to value '%s')",
               p->GetName(),
               event.GetValue().GetString());
}

void wxMyPropertyGridPage::OnPageChange( wxPropertyGridEvent& WXUNUSED(event) )
{
    wxLogDebug("wxMyPropertyGridPage::OnPageChange()");
}


class wxPGKeyHandler : public wxEvtHandler
{
public:

    void OnKeyEvent( wxKeyEvent& event )
    {
        wxMessageBox(wxString::Format("%i",event.GetKeyCode()));
        event.Skip();
    }
private:
    wxDECLARE_EVENT_TABLE();
};

wxBEGIN_EVENT_TABLE(wxPGKeyHandler,wxEvtHandler)
    EVT_KEY_DOWN( wxPGKeyHandler::OnKeyEvent )
wxEND_EVENT_TABLE()


// -----------------------------------------------------------------------

void FormMain::PopulateGrid()
{
    m_propGridManager->AddPage("Standard Items");

    PopulateWithStandardItems();

    m_propGridManager->AddPage("wxWidgets Library Config");

    PopulateWithLibraryConfig();

    wxPropertyGridPage* myPage = new wxMyPropertyGridPage();
    myPage->Append( new wxIntProperty ( "IntProperty", wxPG_LABEL, 12345678L ) );

    // Use wxMyPropertyGridPage (see above) to test the
    // custom wxPropertyGridPage feature.
    m_propGridManager->AddPage("Examples", wxBitmapBundle(), myPage);

    PopulateWithExamples();
}

void FormMain::CreateGrid( int style, int extraStyle )
{
    //
    // This function (re)creates the property grid in our sample
    //

    if ( style == -1 )
        style = // default style
                wxPG_BOLD_MODIFIED |
                wxPG_SPLITTER_AUTO_CENTER |
                wxPG_AUTO_SORT |
                //wxPG_HIDE_MARGIN|wxPG_STATIC_SPLITTER |
                //wxPG_TOOLTIPS |
                //wxPG_HIDE_CATEGORIES |
                //wxPG_LIMITED_EDITING |
                wxPG_TOOLBAR |
                wxPG_DESCRIPTION;

    if ( extraStyle == -1 )
        // default extra style
        extraStyle = wxPG_EX_MODE_BUTTONS |
#if wxALWAYS_NATIVE_DOUBLE_BUFFER
                     wxPG_EX_NATIVE_DOUBLE_BUFFERING |
#endif // wxALWAYS_NATIVE_DOUBLE_BUFFER
                     wxPG_EX_MULTIPLE_SELECTION;
                //| wxPG_EX_AUTO_UNSPECIFIED_VALUES
                //| wxPG_EX_GREY_LABEL_WHEN_DISABLED
                //| wxPG_EX_HELP_AS_TOOLTIPS

    //
    // This shows how to combine two static choice descriptors
    m_combinedFlags.Add( WXSIZEOF(_fs_windowstyle_labels), _fs_windowstyle_labels, _fs_windowstyle_values );
    m_combinedFlags.Add( WXSIZEOF(_fs_framestyle_labels), _fs_framestyle_labels, _fs_framestyle_values );

    m_propGridManager = new wxPropertyGridManager(m_panel,
                                  // Don't change this into wxID_ANY in the sample, or the
                                  // event handling will obviously be broken.
                                  PGID, /*wxID_ANY*/
                                  wxDefaultPosition,
                                  wxDefaultSize,
                                  style );

    m_propGrid = m_propGridManager->GetGrid();

    m_propGridManager->SetExtraStyle(extraStyle);

    // This is the default validation failure behaviour
    m_propGridManager->SetValidationFailureBehavior( wxPGVFBFlags::MarkCell |
                                                      wxPGVFBFlags::ShowMessageBox );

    m_propGridManager->GetGrid()->SetVerticalSpacing( 2 );

    //
    // Set somewhat different unspecified value appearance
    wxPGCell cell;
    cell.SetText("Unspecified");
    cell.SetFgCol(*wxLIGHT_GREY);
    m_propGrid->SetUnspecifiedValueAppearance(cell);

    PopulateGrid();

    m_propGrid->MakeColumnEditable(0, m_labelEditingEnabled);
    m_propGridManager->ShowHeader(m_hasHeader);
    if ( m_hasHeader )
    {
        m_propGridManager->SetColumnTitle(2, "Units");
    }

    // Change some attributes in all properties
    //m_propGridManager->SetPropertyAttributeAll(wxPG_BOOL_USE_DOUBLE_CLICK_CYCLING,true);

    //m_propGridManager->SetSplitterLeft(true);
    //m_propGridManager->SetSplitterPosition(137);
}

void FormMain::ReplaceGrid(int style, int extraStyle)
{
    wxPropertyGridManager* pgmanOld = m_propGridManager;
    CreateGrid(style, extraStyle);
    m_topSizer->Replace(pgmanOld, m_propGridManager);
    pgmanOld->Destroy();
    m_propGridManager->SetFocus();

    m_panel->Layout();
}

// -----------------------------------------------------------------------

FormMain::FormMain(const wxString& title)
    : wxFrame(nullptr, -1, title, wxDefaultPosition, wxDefaultSize,
               (wxMINIMIZE_BOX|wxMAXIMIZE_BOX|wxRESIZE_BORDER|wxSYSTEM_MENU|wxCAPTION|
                wxTAB_TRAVERSAL|wxCLOSE_BOX) )
    , m_propGridManager(nullptr)
    , m_propGrid(nullptr)
    , m_hasHeader(false)
    , m_labelEditingEnabled(false)
{
    SetIcon(wxICON(sample));
    SetClientSize(FromDIP(wxSize(600, 800)));
    Centre();

#ifdef __WXMAC__
    // we need this in order to allow the about menu relocation, since ABOUT is
    // not the default id of the about menu
    wxApp::s_macAboutMenuItemId = ID_ABOUT;
#endif

#if wxUSE_IMAGE
    // This is here to really test the wxImageFileProperty.
    wxInitAllImageHandlers();
#endif

    //
    // Create menu bar
    wxMenu *menuFile = new wxMenu("", wxMENU_TEAROFF);
    wxMenu *menuTry = new wxMenu;
    wxMenu *menuTools1 = new wxMenu;
    wxMenu *menuTools2 = new wxMenu;
    wxMenu *menuHelp = new wxMenu;

    menuHelp->Append(ID_ABOUT, "&About", "Show about dialog" );

    menuTools1->Append(ID_APPENDPROP, "Append New Property" );
    menuTools1->Append(ID_APPENDCAT, "Append New Category\tCtrl-S" );
    menuTools1->AppendSeparator();
    menuTools1->Append(ID_INSERTPROP, "Insert New Property\tCtrl-I" );
    menuTools1->Append(ID_INSERTCAT, "Insert New Category\tCtrl-W" );
    menuTools1->AppendSeparator();
    menuTools1->Append(ID_DELETE, "Delete Selected" );
    menuTools1->Append(ID_DELETER, "Delete Random" );
    menuTools1->Append(ID_DELETEALL, "Delete All" );
    menuTools1->AppendSeparator();
    menuTools1->Append(ID_SETBGCOLOUR, "Set Bg Colour" );
    menuTools1->Append(ID_SETBGCOLOURRECUR, "Set Bg Colour (Recursively)" );
    menuTools1->Append(ID_UNSPECIFY, "Set Value to Unspecified");
    menuTools1->AppendSeparator();
    m_itemEnable = menuTools1->Append(ID_ENABLE, "Enable",
        "Toggles item's enabled state." );
    m_itemEnable->Enable( false );
    menuTools1->Append(ID_HIDE, "Hide", "Hides a property" );
    menuTools1->Append(ID_SETREADONLY, "Set as Read-Only",
                       "Set property as read-only" );

    menuTools2->Append(ID_ITERATE1, "Iterate Over Properties" );
    menuTools2->Append(ID_ITERATE2, "Iterate Over Visible Items" );
    menuTools2->Append(ID_ITERATE3, "Reverse Iterate Over Properties" );
    menuTools2->Append(ID_ITERATE4, "Iterate Over Categories" );
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_ONEXTENDEDKEYNAV, "Extend Keyboard Navigation",
                       "This will set Enter to navigate to next property, "
                       "and allows arrow keys to navigate even when in "
                       "editor control.");
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_SETPROPERTYVALUE, "Set Property Value" );
    menuTools2->Append(ID_CLEARMODIF, "Clear Modified Status", "Clears wxPG_MODIFIED flag from all properties." );
    menuTools2->AppendSeparator();
    m_itemFreeze = menuTools2->AppendCheckItem(ID_FREEZE, "Freeze",
        "Disables painting, auto-sorting, etc." );
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_DUMPLIST, "Display Values as wxVariant List", "Tests GetAllValues method and wxVariant conversion." );
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_GETVALUES, "Get Property Values", "Stores all property values." );
    menuTools2->Append(ID_SETVALUES, "Set Property Values", "Reverts property values to those last stored." );
    menuTools2->Append(ID_SETVALUES2, "Set Property Values 2", "Adds property values that should not initially be as items (so new items are created)." );
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_SAVESTATE, "Save Editable State" );
    menuTools2->Append(ID_RESTORESTATE, "Restore Editable State" );
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_ENABLECOMMONVALUES, "Enable Common Value",
        "Enable values that are common to all properties, for selected property.");
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_COLLAPSE, "Collapse Selected" );
    menuTools2->Append(ID_COLLAPSEALL, "Collapse All" );
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_INSERTPAGE, "Add Page" );
    menuTools2->Append(ID_REMOVEPAGE, "Remove Page" );
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_FITCOLUMNS, "Fit Columns" );
    m_itemVetoDragging =
        menuTools2->AppendCheckItem(ID_VETOCOLDRAG,
                                    "Veto Column Dragging");
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_CHANGEFLAGSITEMS, "Change Children of FlagsProp" );
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_TESTINSERTCHOICE, "Test InsertPropertyChoice" );
    menuTools2->Append(ID_TESTDELETECHOICE, "Test DeletePropertyChoice" );
    menuTools2->AppendSeparator();
    menuTools2->Append(ID_SETSPINCTRLEDITOR, "Use SpinCtrl Editor" );
    menuTools2->Append(ID_TESTREPLACE, "Test ReplaceProperty" );

    menuTry->Append(ID_SELECTSTYLE, "Set Window Style",
        "Select window style flags used by the grid.");
    menuTry->AppendCheckItem(ID_ENABLELABELEDITING, "Enable label editing",
        "This calls wxPropertyGrid::MakeColumnEditable(0)");
    menuTry->Check(ID_ENABLELABELEDITING, m_labelEditingEnabled);
#if wxUSE_HEADERCTRL
    menuTry->AppendCheckItem(ID_SHOWHEADER,
        "Enable header",
        "This calls wxPropertyGridManager::ShowHeader()");
    menuTry->Check(ID_SHOWHEADER, m_hasHeader);
#endif // wxUSE_HEADERCTRL
    menuTry->AppendSeparator();
    menuTry->AppendRadioItem( ID_COLOURSCHEME1, "Standard Colour Scheme" );
    menuTry->AppendRadioItem( ID_COLOURSCHEME2, "White Colour Scheme" );
    menuTry->AppendRadioItem( ID_COLOURSCHEME3, ".NET Colour Scheme" );
    menuTry->AppendRadioItem( ID_COLOURSCHEME4, "Cream Colour Scheme" );
    menuTry->AppendSeparator();
    m_itemCatColours = menuTry->AppendCheckItem(ID_CATCOLOURS, "Category Specific Colours",
        "Switches between category-specific cell colours and default scheme (actually done using SetPropertyTextColour and SetPropertyBackgroundColour)." );
    menuTry->AppendSeparator();
    menuTry->AppendCheckItem(ID_STATICLAYOUT, "Static Layout",
        "Switches between user-modifiable and static layouts." );
    menuTry->AppendCheckItem(ID_BOOL_CHECKBOX, "Render Boolean values as checkboxes",
        "Renders Boolean values as checkboxes");
    menuTry->Append(ID_SETCOLUMNS, "Set Number of Columns" );
    menuTry->Append(ID_SETVIRTWIDTH, "Set Virtual Width");
    menuTry->AppendCheckItem(ID_SETPGDISABLED, "Disable Grid");

    menuFile->Append(ID_RUNMINIMAL, "Run Minimal Sample" );
    menuFile->Append(ID_TESTXRC, "Load from XRC\tCtrl-R" );
    menuFile->AppendSeparator();
    menuFile->Append(ID_QUIT, "E&xit\tAlt-X", "Quit this program" );

    // Now append the freshly created menu to the menu bar...
    wxMenuBar *menuBar = new wxMenuBar();
    menuBar->Append(menuFile, "&File" );
    menuBar->Append(menuTry, "&Try These!" );
    menuBar->Append(menuTools1, "&Basic" );
    menuBar->Append(menuTools2, "&Advanced" );
    menuBar->Append(menuHelp, "&Help" );

    // ... and attach this menu bar to the frame
    SetMenuBar(menuBar);

#if wxUSE_STATUSBAR
    // create a status bar
    CreateStatusBar(1);
    SetStatusText(wxString());
#endif // wxUSE_STATUSBAR

    // Register all editors (SpinCtrl etc.)
    wxPropertyGridInterface::RegisterAdditionalEditors();

    // Register our sample custom editors
    m_sampleMultiButtonEditor =
        wxPropertyGrid::RegisterEditorClass(new wxSampleMultiButtonEditor());

    m_panel = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL);

    CreateGrid( // style
        wxPG_BOLD_MODIFIED |
        wxPG_SPLITTER_AUTO_CENTER |
        wxPG_AUTO_SORT |
        //wxPG_HIDE_MARGIN|wxPG_STATIC_SPLITTER |
        //wxPG_TOOLTIPS |
        //wxPG_HIDE_CATEGORIES |
        //wxPG_LIMITED_EDITING |
        wxPG_TOOLBAR |
        wxPG_DESCRIPTION,
        // extra style
#if wxALWAYS_NATIVE_DOUBLE_BUFFER
        wxPG_EX_NATIVE_DOUBLE_BUFFERING |
#endif // wxALWAYS_NATIVE_DOUBLE_BUFFER
        wxPG_EX_MODE_BUTTONS |
        wxPG_EX_MULTIPLE_SELECTION
        //| wxPG_EX_AUTO_UNSPECIFIED_VALUES
        //| wxPG_EX_GREY_LABEL_WHEN_DISABLED
        //| wxPG_EX_HELP_AS_TOOLTIPS
    );

    m_topSizer = new wxBoxSizer(wxVERTICAL);

    m_topSizer->Add(m_propGridManager, wxSizerFlags(1).Expand());

    // Button for tab traversal testing
    wxBoxSizer* btnSizer = new wxBoxSizer(wxHORIZONTAL);
    btnSizer->Add(new wxButton(m_panel, wxID_ANY,
        "Should be able to move here with Tab"),
        wxSizerFlags(1).DoubleBorder(wxALL));
    btnSizer->Add(new wxButton(m_panel, ID_SHOWPOPUP,
        "Show Popup"),
        wxSizerFlags(1).DoubleBorder(wxALL));
    m_topSizer->Add(btnSizer, wxSizerFlags(0).Border(wxALL).Expand());

    m_panel->SetSizer(m_topSizer);
    m_topSizer->SetSizeHints(m_panel);

    m_panel->Layout();

#if wxUSE_LOGWINDOW
    // Create log window
    m_logWindow = new wxLogWindow(this, "Log Messages", false);
    m_logWindow->GetFrame()->Move(GetPosition().x + GetSize().x + 10,
                                  GetPosition().y);
    m_logWindow->Show();
#endif
}

//
// Normally, wxPropertyGrid does not check whether item with identical
// label already exists. However, since in this sample we use labels for
// identifying properties, we have to be sure not to generate identical
// labels.
//
void GenerateUniquePropertyLabel( wxPropertyGridManager* pg, wxString& baselabel )
{
    int count = -1;
    wxString newlabel;

    if ( pg->GetPropertyByLabel( baselabel ) )
    {
        for (;;)
        {
            count++;
            newlabel.Printf("%s%i",baselabel,count);
            if ( !pg->GetPropertyByLabel( newlabel ) ) break;
        }
    }

    if ( count >= 0 )
    {
        baselabel = newlabel;
    }
}

// -----------------------------------------------------------------------

void FormMain::OnInsertPropClick( wxCommandEvent& WXUNUSED(event) )
{
    wxString propLabel;

    if ( !m_propGridManager->GetGrid()->GetRoot()->HasAnyChild() )
    {
        wxMessageBox("No items to relate - first add some with Append.");
        return;
    }

    wxPGProperty* id = m_propGridManager->GetGrid()->GetSelection();
    if ( !id )
    {
        wxMessageBox("First select a property - new one will be inserted right before that.");
        return;
    }
    if ( propLabel.Len() < 1 ) propLabel = "Property";

    GenerateUniquePropertyLabel( m_propGridManager, propLabel );

    m_propGridManager->Insert( m_propGridManager->GetPropertyParent(id),
                                id->GetIndexInParent(),
                                new wxStringProperty(propLabel) );

}

// -----------------------------------------------------------------------

void FormMain::OnAppendPropClick( wxCommandEvent& WXUNUSED(event) )
{
    wxString propLabel;

    if ( propLabel.Len() < 1 ) propLabel = "Property";

    GenerateUniquePropertyLabel( m_propGridManager, propLabel );

    m_propGridManager->Append( new wxStringProperty(propLabel) );

    m_propGridManager->Refresh();
}

// -----------------------------------------------------------------------

void FormMain::OnClearClick( wxCommandEvent& WXUNUSED(event) )
{
    m_propGridManager->GetGrid()->Clear();
}

// -----------------------------------------------------------------------

void FormMain::OnAppendCatClick( wxCommandEvent& WXUNUSED(event) )
{
    wxString propLabel;

    if ( propLabel.Len() < 1 ) propLabel = "Category";

    GenerateUniquePropertyLabel( m_propGridManager, propLabel );

    m_propGridManager->Append( new wxPropertyCategory (propLabel) );

    m_propGridManager->Refresh();

}

// -----------------------------------------------------------------------

void FormMain::OnInsertCatClick( wxCommandEvent& WXUNUSED(event) )
{
    wxString propLabel;

    if ( !m_propGridManager->GetGrid()->GetRoot()->HasAnyChild() )
    {
        wxMessageBox("No items to relate - first add some with Append.");
        return;
    }

    wxPGProperty* id = m_propGridManager->GetGrid()->GetSelection();
    if ( !id )
    {
        wxMessageBox("First select a property - new one will be inserted right before that.");
        return;
    }

    if ( propLabel.Len() < 1 ) propLabel = "Category";

    GenerateUniquePropertyLabel( m_propGridManager, propLabel );

    m_propGridManager->Insert( m_propGridManager->GetPropertyParent(id),
                                id->GetIndexInParent(),
                                new wxPropertyCategory (propLabel) );
}

// -----------------------------------------------------------------------

void FormMain::OnDelPropClick( wxCommandEvent& WXUNUSED(event) )
{
    wxPGProperty* id = m_propGridManager->GetGrid()->GetSelection();
    if ( !id )
    {
        wxMessageBox("First select a property.");
        return;
    }

    m_propGridManager->DeleteProperty( id );
}

// -----------------------------------------------------------------------

void FormMain::OnDelPropRClick( wxCommandEvent& WXUNUSED(event) )
{
    // Delete random property
    wxPGProperty* p = m_propGridManager->GetGrid()->GetRoot();
    std::uniform_int_distribution<unsigned int> distrib(0, 1000);

    for (;;)
    {
        if ( !p->HasAnyChild() )
            break;

        unsigned int n = distrib(s_rng) % p->GetChildCount();
        p = p->Item(n);

        if ( !p->IsCategory() )
        {
            wxString label = p->GetLabel();
            m_propGridManager->DeleteProperty(p);
            wxLogMessage("Property deleted: %s", label);
            break;
        }
    }
}

// -----------------------------------------------------------------------

void FormMain::OnContextMenu( wxContextMenuEvent& event )
{
    wxLogDebug("FormMain::OnContextMenu(%i,%i)",
        event.GetPosition().x,event.GetPosition().y);

    wxUnusedVar(event);

    //event.Skip();
}

// -----------------------------------------------------------------------

void FormMain::OnCloseClick( wxCommandEvent& WXUNUSED(event) )
{
/*#ifdef __WXDEBUG__
    m_propGridManager->GetGrid()->DumpAllocatedChoiceSets();
    wxLogDebug("\\-> Don't worry, this is perfectly normal in this sample.");
#endif*/

    Close(false);
}

// -----------------------------------------------------------------------

int IterateMessage( wxPGProperty* prop )
{
    wxString s;

    s.Printf( "\"%s\" class = %s, valuetype = %s", prop->GetLabel(),
        prop->GetClassInfo()->GetClassName(), prop->GetValueType() );

    return wxMessageBox( s, "Iterating... (press CANCEL to end)", wxOK|wxCANCEL );
}

// -----------------------------------------------------------------------

void FormMain::OnIterate1Click( wxCommandEvent& WXUNUSED(event) )
{
    wxPropertyGridIterator it;

    for ( it = m_propGridManager->GetCurrentPage()->
            GetIterator();
          !it.AtEnd();
          ++it )
    {
        wxPGProperty* p = *it;
        int res = IterateMessage( p );
        if ( res == wxCANCEL ) break;
    }
}

// -----------------------------------------------------------------------

void FormMain::OnIterate2Click( wxCommandEvent& WXUNUSED(event) )
{
    wxPropertyGridIterator it;

    for ( it = m_propGridManager->GetCurrentPage()->
            GetIterator( wxPG_ITERATE_VISIBLE );
          !it.AtEnd();
          ++it )
    {
        wxPGProperty* p = *it;

        int res = IterateMessage( p );
        if ( res == wxCANCEL ) break;
    }
}

// -----------------------------------------------------------------------

void FormMain::OnIterate3Click( wxCommandEvent& WXUNUSED(event) )
{
    // iterate over items in reverse order
    wxPropertyGridIterator it;

    for ( it = m_propGridManager->GetCurrentPage()->
                GetIterator( wxPG_ITERATE_DEFAULT, wxBOTTOM );
          !it.AtEnd();
          --it )
    {
        wxPGProperty* p = *it;

        int res = IterateMessage( p );
        if ( res == wxCANCEL ) break;
    }
}

// -----------------------------------------------------------------------

void FormMain::OnIterate4Click( wxCommandEvent& WXUNUSED(event) )
{
    wxPropertyGridIterator it;

    for ( it = m_propGridManager->GetCurrentPage()->
            GetIterator( wxPG_ITERATE_CATEGORIES );
          !it.AtEnd();
          ++it )
    {
        wxPGProperty* p = *it;

        int res = IterateMessage( p );
        if ( res == wxCANCEL ) break;
    }
}

// -----------------------------------------------------------------------

void FormMain::OnExtendedKeyNav( wxCommandEvent& WXUNUSED(event) )
{
    // Use AddActionTrigger() and DedicateKey() to set up Enter,
    // Up, and Down keys for navigating between properties.
    wxPropertyGrid* propGrid = m_propGridManager->GetGrid();

    propGrid->AddActionTrigger(wxPGKeyboardAction::NextProperty,
                               WXK_RETURN);
    propGrid->DedicateKey(WXK_RETURN);

    // Up and Down keys are already associated with navigation,
    // but we must also prevent them from being eaten by
    // editor controls.
    propGrid->DedicateKey(WXK_UP);
    propGrid->DedicateKey(WXK_DOWN);
}

// -----------------------------------------------------------------------

void FormMain::OnFitColumnsClick( wxCommandEvent& WXUNUSED(event) )
{
    wxPropertyGridPage* page = m_propGridManager->GetCurrentPage();

    // Remove auto-centering
    m_propGridManager->SetWindowStyle( m_propGridManager->GetWindowStyle() & ~wxPG_SPLITTER_AUTO_CENTER);

    // Grow manager size just prior fit - otherwise
    // column information may be lost.
    wxSize oldGridSize = m_propGridManager->GetGrid()->GetClientSize();
    wxSize oldFullSize = GetSize();
    SetSize(1000, oldFullSize.y);

    wxSize newSz = page->FitColumns();

    int dx = oldFullSize.x - oldGridSize.x;
    int dy = oldFullSize.y - oldGridSize.y;

    newSz.IncBy(dx, dy);

    SetSize(newSz);
}

// -----------------------------------------------------------------------

void FormMain::OnChangeFlagsPropItemsClick( wxCommandEvent& WXUNUSED(event) )
{
    wxPGProperty* p = m_propGridManager->GetPropertyByName("Window Styles");

    wxPGChoices newChoices;

    newChoices.Add("Fast",0x1);
    newChoices.Add("Powerful",0x2);
    newChoices.Add("Safe",0x4);
    newChoices.Add("Sleek",0x8);

    p->SetChoices(newChoices);
}

// -----------------------------------------------------------------------

void FormMain::OnEnableDisable( wxCommandEvent& )
{
    wxPGProperty* id = m_propGridManager->GetGrid()->GetSelection();
    if ( !id )
    {
        wxMessageBox("First select a property.");
        return;
    }

    if ( m_propGridManager->IsPropertyEnabled( id ) )
    {
        m_propGridManager->DisableProperty ( id );
        m_itemEnable->SetItemLabel( "Enable" );
    }
    else
    {
        m_propGridManager->EnableProperty ( id );
        m_itemEnable->SetItemLabel( "Disable" );
    }
}

// -----------------------------------------------------------------------

void FormMain::OnSetReadOnly( wxCommandEvent& WXUNUSED(event) )
{
    wxPGProperty* p = m_propGridManager->GetGrid()->GetSelection();
    if ( !p )
    {
        wxMessageBox("First select a property.");
        return;
    }
    m_propGridManager->SetPropertyReadOnly(p);
}

// -----------------------------------------------------------------------

void FormMain::OnHide( wxCommandEvent& WXUNUSED(event) )
{
    wxPGProperty* id = m_propGridManager->GetGrid()->GetSelection();
    if ( !id )
    {
        wxMessageBox("First select a property.");
        return;
    }

    m_propGridManager->HideProperty( id, true );
}

void FormMain::OnBoolCheckbox(wxCommandEvent& evt)
{
    m_propGridManager->SetPropertyAttributeAll(wxPG_BOOL_USE_CHECKBOX, evt.IsChecked());
}

// -----------------------------------------------------------------------

#include "wx/colordlg.h"

void
FormMain::OnSetBackgroundColour( wxCommandEvent& event )
{
    wxPropertyGrid* pg = m_propGridManager->GetGrid();
    wxPGProperty* prop = pg->GetSelection();
    if ( !prop )
    {
        wxMessageBox("First select a property.");
        return;
    }

    wxColour col = ::wxGetColourFromUser(this, *wxWHITE, "Choose colour");

    if ( col.IsOk() )
    {
        wxPGPropertyValuesFlags flags = (event.GetId()==ID_SETBGCOLOURRECUR)
                            ? wxPGPropertyValuesFlags::Recurse : wxPGPropertyValuesFlags::DontRecurse;
        pg->SetPropertyBackgroundColour(prop, col, flags);
    }
}

// -----------------------------------------------------------------------

void FormMain::OnInsertPage( wxCommandEvent& WXUNUSED(event) )
{
    m_propGridManager->AddPage("New Page");
}

// -----------------------------------------------------------------------

void FormMain::OnRemovePage( wxCommandEvent& WXUNUSED(event) )
{
    m_propGridManager->RemovePage(m_propGridManager->GetSelectedPage());
}

// -----------------------------------------------------------------------

void FormMain::OnSaveState( wxCommandEvent& WXUNUSED(event) )
{
    m_savedState = m_propGridManager->SaveEditableState();
    wxLogDebug("Saved editable state string: \"%s\"", m_savedState);
}

// -----------------------------------------------------------------------

void FormMain::OnRestoreState( wxCommandEvent& WXUNUSED(event) )
{
    m_propGridManager->RestoreEditableState(m_savedState);
}

// -----------------------------------------------------------------------

void FormMain::OnSetSpinCtrlEditorClick( wxCommandEvent& WXUNUSED(event) )
{
#if wxUSE_SPINBTN
    wxPGProperty* pgId = m_propGridManager->GetSelection();
    if ( pgId )
        m_propGridManager->SetPropertyEditor( pgId, wxPGEditor_SpinCtrl );
    else
        wxMessageBox("First select a property");
#endif
}

// -----------------------------------------------------------------------

void FormMain::OnTestReplaceClick( wxCommandEvent& WXUNUSED(event) )
{
    wxPGProperty* pgId = m_propGridManager->GetSelection();
    if ( pgId )
    {
        wxPGChoices choices;
        choices.Add("Flag 0",0x0001);
        choices.Add("Flag 1",0x0002);
        choices.Add("Flag 2",0x0004);
        choices.Add("Flag 3",0x0008);
        const long maxVal = 0x000F;
        // Look for unused property name
        wxString propName = "ReplaceFlagsProperty";
        int idx = 0;
        while ( m_propGridManager->GetPropertyByName(propName) )
        {
            propName = wxString::Format("ReplaceFlagsProperty %i", ++idx);
        }
        // Replace property and select new one
        // with random value in range [1..maxVal]
        const long propVal = wxGetLocalTime() % maxVal + 1;
        wxPGProperty* newId = m_propGridManager->ReplaceProperty( pgId,
            new wxFlagsProperty(propName, wxPG_LABEL, choices, propVal) );
        m_propGridManager->SetPropertyAttribute( newId,
                                              wxPG_BOOL_USE_CHECKBOX,
                                              true,
                                              wxPGPropertyValuesFlags::Recurse );
        m_propGridManager->SelectProperty(newId);
    }
    else
        wxMessageBox("First select a property");
}

// -----------------------------------------------------------------------

void FormMain::OnClearModifyStatusClick( wxCommandEvent& WXUNUSED(event) )
{
    m_propGridManager->ClearModifiedStatus();
    m_propGridManager->Refresh();
}

// -----------------------------------------------------------------------

// Freeze check-box checked?
void FormMain::OnFreezeClick( wxCommandEvent& event )
{
    if ( !m_propGridManager ) return;

    if ( event.IsChecked() )
    {
        if ( !m_propGridManager->IsFrozen() )
        {
            m_propGridManager->Freeze();
        }
    }
    else
    {
        if ( m_propGridManager->IsFrozen() )
        {
            m_propGridManager->Thaw();
            m_propGridManager->Refresh();
        }
    }
}

// -----------------------------------------------------------------------

void FormMain::OnEnableLabelEditing(wxCommandEvent& event)
{
    m_labelEditingEnabled = event.IsChecked();
    m_propGrid->MakeColumnEditable(0, m_labelEditingEnabled);
}

// -----------------------------------------------------------------------

#if wxUSE_HEADERCTRL
void FormMain::OnShowHeader( wxCommandEvent& event )
{
    m_hasHeader = event.IsChecked();
    m_propGridManager->ShowHeader(m_hasHeader);
    if ( m_hasHeader )
    {
        m_propGridManager->SetColumnTitle(2, "Units");
    }
}
#endif // wxUSE_HEADERCTRL

// -----------------------------------------------------------------------

void FormMain::OnAbout(wxCommandEvent& WXUNUSED(event))
{
    wxPlatformInfo pi = wxPlatformInfo::Get();
    wxString toolkit = wxString::Format("%s %i.%i.%i", pi.GetPortIdName(),
                                        pi.GetToolkitMajorVersion(),
                                        pi.GetToolkitMinorVersion(),
                                        pi.GetToolkitMicroVersion());

    wxString msg;
    msg.Printf( "wxPropertyGrid Sample"
  #if defined(wxUSE_UNICODE_UTF8) && wxUSE_UNICODE_UTF8
                " <utf-8>"
  #else
                " <unicode>"
  #endif
#ifdef __WXDEBUG__
                " <debug>"
#else
                " <release>"
#endif
                "\n\n"
                "Programmed by %s\n\n"
                "Using %s (%s)\n\n",
            "Jaakko Salli", wxVERSION_STRING, toolkit
            );

    wxMessageBox(msg, "About", wxOK | wxICON_INFORMATION, this);
}

// -----------------------------------------------------------------------

void FormMain::OnColourScheme( wxCommandEvent& event )
{
    int id = event.GetId();
    if ( id == ID_COLOURSCHEME1 )
    {
        m_propGridManager->GetGrid()->ResetColours();
    }
    else if ( id == ID_COLOURSCHEME2 )
    {
        // white
        wxColour my_grey_1(212,208,200);
        wxColour my_grey_3(113,111,100);
        m_propGridManager->Freeze();
        m_propGridManager->GetGrid()->SetMarginColour( *wxWHITE );
        m_propGridManager->GetGrid()->SetCaptionBackgroundColour( *wxWHITE );
        m_propGridManager->GetGrid()->SetCellBackgroundColour( *wxWHITE );
        m_propGridManager->GetGrid()->SetCellTextColour( my_grey_3 );
        m_propGridManager->GetGrid()->SetLineColour( my_grey_1 ); //wxColour(160,160,160)
        m_propGridManager->Thaw();
    }
    else if ( id == ID_COLOURSCHEME3 )
    {
        // .NET
        wxColour my_grey_1(212,208,200);
        wxColour my_grey_2(236,233,216);
        m_propGridManager->Freeze();
        m_propGridManager->GetGrid()->SetMarginColour( my_grey_1 );
        m_propGridManager->GetGrid()->SetCaptionBackgroundColour( my_grey_1 );
        m_propGridManager->GetGrid()->SetLineColour( my_grey_2 );
        m_propGridManager->Thaw();
    }
    else if ( id == ID_COLOURSCHEME4 )
    {
        // cream

        wxColour my_grey_1(212,208,200);
        wxColour my_grey_2(241,239,226);
        wxColour my_grey_3(113,111,100);
        m_propGridManager->Freeze();
        m_propGridManager->GetGrid()->SetMarginColour( *wxWHITE );
        m_propGridManager->GetGrid()->SetCaptionBackgroundColour( *wxWHITE );
        m_propGridManager->GetGrid()->SetCellBackgroundColour( my_grey_2 );
        m_propGridManager->GetGrid()->SetCellBackgroundColour( my_grey_2 );
        m_propGridManager->GetGrid()->SetCellTextColour( my_grey_3 );
        m_propGridManager->GetGrid()->SetLineColour( my_grey_1 );
        m_propGridManager->Thaw();
    }
}

// -----------------------------------------------------------------------

void FormMain::OnCatColoursUpdateUI(wxUpdateUIEvent& WXUNUSED(event))
{
    // Prevent menu item from being checked
    // if it is selected from improper page.
    const wxPropertyGrid* pg = m_propGridManager->GetGrid();
    m_itemCatColours->SetCheckable(
         pg->GetPropertyByName("Appearance") &&
         pg->GetPropertyByName("PositionCategory") &&
         pg->GetPropertyByName("Environment") &&
         pg->GetPropertyByName("More Examples") );
}

void FormMain::OnCatColours( wxCommandEvent& event )
{
    wxPropertyGrid* pg = m_propGridManager->GetGrid();
    if ( !pg->GetPropertyByName("Appearance") ||
         !pg->GetPropertyByName("PositionCategory") ||
         !pg->GetPropertyByName("Environment") ||
         !pg->GetPropertyByName("More Examples") )
    {
        wxMessageBox("First switch to 'Standard Items' page!");
        return;
    }

    m_propGridManager->Freeze();

    if ( event.IsChecked() )
    {
        // Set custom colours.
        pg->SetPropertyTextColour( "Appearance", wxColour(255,0,0), wxPGPropertyValuesFlags::DontRecurse );
        pg->SetPropertyBackgroundColour( "Appearance", wxColour(255,255,183) );
        pg->SetPropertyTextColour( "Appearance", wxColour(255,0,183) );
        pg->SetPropertyTextColour( "PositionCategory", wxColour(0,255,0), wxPGPropertyValuesFlags::DontRecurse );
        pg->SetPropertyBackgroundColour( "PositionCategory", wxColour(255,226,190) );
        pg->SetPropertyTextColour( "PositionCategory", wxColour(255,0,190) );
        pg->SetPropertyTextColour( "Environment", wxColour(0,0,255), wxPGPropertyValuesFlags::DontRecurse);
        pg->SetPropertyBackgroundColour( "Environment", wxColour(208,240,175) );
        pg->SetPropertyTextColour( "Environment", wxColour(255,255,255) );
        pg->SetPropertyBackgroundColour( "More Examples", wxColour(172,237,255) );
        pg->SetPropertyTextColour( "More Examples", wxColour(172,0,255) );
    }
    else
    {
        // Revert to original.
        pg->SetPropertyColoursToDefault( "Appearance" );
        pg->SetPropertyColoursToDefault( "Appearance", wxPGPropertyValuesFlags::Recurse );
        pg->SetPropertyColoursToDefault( "PositionCategory" );
        pg->SetPropertyColoursToDefault( "PositionCategory", wxPGPropertyValuesFlags::Recurse );
        pg->SetPropertyColoursToDefault( "Environment" );
        pg->SetPropertyColoursToDefault( "Environment", wxPGPropertyValuesFlags::Recurse );
        pg->SetPropertyColoursToDefault( "More Examples", wxPGPropertyValuesFlags::Recurse );
    }
    m_propGridManager->Thaw();
    m_propGridManager->Refresh();
}

// -----------------------------------------------------------------------

#define ADD_FLAG(FLAG) \
        chs.Add(#FLAG); \
        vls.Add(FLAG); \
        if ( (flags & FLAG) == FLAG ) sel.Add(ind); \
        ind++;

void FormMain::OnSelectStyle( wxCommandEvent& WXUNUSED(event) )
{
    int style = 0;
    int extraStyle = 0;

    {
        wxArrayString chs;
        wxArrayInt vls;
        wxArrayInt sel;
        unsigned int ind = 0;
        int flags = m_propGridManager->GetWindowStyle();
        ADD_FLAG(wxPG_HIDE_CATEGORIES)
        ADD_FLAG(wxPG_AUTO_SORT)
        ADD_FLAG(wxPG_BOLD_MODIFIED)
        ADD_FLAG(wxPG_SPLITTER_AUTO_CENTER)
        ADD_FLAG(wxPG_TOOLTIPS)
        ADD_FLAG(wxPG_STATIC_SPLITTER)
        ADD_FLAG(wxPG_HIDE_MARGIN)
        ADD_FLAG(wxPG_LIMITED_EDITING)
        ADD_FLAG(wxPG_TOOLBAR)
        ADD_FLAG(wxPG_DESCRIPTION)
        ADD_FLAG(wxPG_NO_INTERNAL_BORDER)
        wxMultiChoiceDialog dlg( this, "Select window styles to use",
                                 "wxPropertyGrid Window Style", chs );
        dlg.SetSelections(sel);
        if ( dlg.ShowModal() == wxID_CANCEL )
            return;

        flags = 0;
        sel = dlg.GetSelections();
        for ( ind = 0; ind < sel.size(); ind++ )
            flags |= vls[sel[ind]];

        style = flags;
    }

    {
        wxArrayString chs;
        wxArrayInt vls;
        wxArrayInt sel;
        unsigned int ind = 0;
        int flags = m_propGridManager->GetExtraStyle();
        ADD_FLAG(wxPG_EX_INIT_NOCAT)
        ADD_FLAG(wxPG_EX_NO_FLAT_TOOLBAR)
        ADD_FLAG(wxPG_EX_MODE_BUTTONS)
        ADD_FLAG(wxPG_EX_HELP_AS_TOOLTIPS)
        ADD_FLAG(wxPG_EX_NATIVE_DOUBLE_BUFFERING)
        ADD_FLAG(wxPG_EX_AUTO_UNSPECIFIED_VALUES)
        ADD_FLAG(wxPG_EX_WRITEONLY_BUILTIN_ATTRIBUTES)
        ADD_FLAG(wxPG_EX_HIDE_PAGE_BUTTONS)
        ADD_FLAG(wxPG_EX_MULTIPLE_SELECTION)
        ADD_FLAG(wxPG_EX_ENABLE_TLP_TRACKING)
        ADD_FLAG(wxPG_EX_NO_TOOLBAR_DIVIDER)
        ADD_FLAG(wxPG_EX_TOOLBAR_SEPARATOR)
        ADD_FLAG(wxPG_EX_ALWAYS_ALLOW_FOCUS)
        wxMultiChoiceDialog dlg( this, "Select extra window styles to use",
                                 "wxPropertyGrid Extra Style", chs );
        dlg.SetSelections(sel);
        if ( dlg.ShowModal() == wxID_CANCEL )
            return;

        flags = 0;
        sel = dlg.GetSelections();
        for ( ind = 0; ind < sel.size(); ind++ )
            flags |= vls[sel[ind]];

        extraStyle = flags;
    }

    ReplaceGrid( style, extraStyle );
}

// -----------------------------------------------------------------------

void FormMain::OnSetColumns( wxCommandEvent& WXUNUSED(event) )
{
    long colCount = ::wxGetNumberFromUser("Enter number of columns (2-20).","Columns:",
                                          "Change Columns",m_propGridManager->GetColumnCount(),
                                          2,20);

    if ( colCount >= 2 )
    {
        m_propGridManager->SetColumnCount(colCount);
    }
}

// -----------------------------------------------------------------------

void FormMain::OnSetVirtualWidth(wxCommandEvent& WXUNUSED(evt))
{
    long oldWidth = m_propGridManager->GetState()->GetVirtualWidth();
    long newWidth = oldWidth;
    {
        wxNumberEntryDialog dlg(this, "Enter virtual width (-1-2000).", "Width:",
                                "Change Virtual Width", oldWidth, -1, 2000);
        if ( dlg.ShowModal() == wxID_OK )
        {
            newWidth = dlg.GetValue();
        }
    }
    if ( newWidth != oldWidth )
    {
        m_propGridManager->GetGrid()->SetVirtualWidth((int)newWidth);
    }
}

// -----------------------------------------------------------------------

void FormMain::OnSetGridDisabled(wxCommandEvent& evt)
{
    m_propGridManager->Enable(!evt.IsChecked());
}

// -----------------------------------------------------------------------

void FormMain::OnSetPropertyValue( wxCommandEvent& WXUNUSED(event) )
{
    wxPropertyGrid* pg = m_propGridManager->GetGrid();
    wxPGProperty* selected = pg->GetSelection();

    if ( selected )
    {
        wxString value = ::wxGetTextFromUser( "Enter new value:" );
        pg->SetPropertyValue( selected, value );
    }
}

// -----------------------------------------------------------------------

void FormMain::OnInsertChoice( wxCommandEvent& WXUNUSED(event) )
{
    wxPropertyGrid* pg = m_propGridManager->GetGrid();
    wxPGProperty* selected = pg->GetSelection();

    if (selected)
    {
        const wxPGChoices& choices = selected->GetChoices();

        if ( choices.IsOk() )
        {
            // Insert new choice to the center of list

            int pos = choices.GetCount() / 2;
            selected->InsertChoice("New Choice", pos);
            return;
        }
    }

    wxMessageBox("First select a property with some choices.");
}

// -----------------------------------------------------------------------

void FormMain::OnDeleteChoice( wxCommandEvent& WXUNUSED(event) )
{
    wxPropertyGrid* pg = m_propGridManager->GetGrid();
    wxPGProperty* selected = pg->GetSelection();

    if (selected)
    {
        const wxPGChoices& choices = selected->GetChoices();

        if ( choices.IsOk() )
        {
            // Deletes choice from the center of list

            int pos = choices.GetCount() / 2;
            selected->DeleteChoice(pos);
            return;
        }
    }

    wxMessageBox("First select a property with some choices.");
}

// -----------------------------------------------------------------------

#include "wx/colordlg.h"

void FormMain::OnMisc ( wxCommandEvent& event )
{
    int id = event.GetId();
    if ( id == ID_STATICLAYOUT )
    {
        long wsf = m_propGridManager->GetWindowStyleFlag();
        if ( event.IsChecked() ) m_propGridManager->SetWindowStyleFlag( wsf|wxPG_STATIC_LAYOUT );
        else m_propGridManager->SetWindowStyleFlag( wsf&~(wxPG_STATIC_LAYOUT) );
    }
    else if ( id == ID_COLLAPSEALL )
    {
        wxPGVIterator it;
        wxPropertyGrid* pg = m_propGridManager->GetGrid();

        for ( it = pg->GetVIterator( wxPG_ITERATE_ALL ); !it.AtEnd(); it.Next() )
            it.GetProperty()->SetExpanded( false );

        pg->RefreshGrid();
    }
    else if ( id == ID_GETVALUES )
    {
        m_storedValues = m_propGridManager->GetGrid()->GetPropertyValues("Test",
                                                                      m_propGridManager->GetGrid()->GetRoot(),
                                   wxPGPropertyValuesFlags::KeepStructure|wxPGPropertyValuesFlags::IncAttributes);
    }
    else if ( id == ID_SETVALUES )
    {
        if ( m_storedValues.IsType("list") )
        {
            m_propGridManager->GetGrid()->SetPropertyValues(m_storedValues);
        }
        else
            wxMessageBox("First use Get Property Values.");
    }
    else if ( id == ID_SETVALUES2 )
    {
        wxVariant list;
        list.NullList();
        list.Append( wxVariant(1234L,"VariantLong") );
        list.Append( wxVariant(true,"VariantBool") );
        list.Append( wxVariant("Test Text","VariantString") );
        m_propGridManager->GetGrid()->SetPropertyValues(list);
    }
    else if ( id == ID_COLLAPSE )
    {
        // Collapses selected.
        wxPGProperty* selProp = m_propGridManager->GetSelection();
        if ( selProp )
        {
            m_propGridManager->Collapse(selProp);
        }
    }
    else if ( id == ID_UNSPECIFY )
    {
        wxPGProperty* prop = m_propGridManager->GetSelection();
        if ( prop )
        {
            m_propGridManager->SetPropertyValueUnspecified(prop);
            prop->RefreshEditor();
        }
    }
}

// -----------------------------------------------------------------------

void FormMain::OnPopulateClick( wxCommandEvent& event )
{
    int id = event.GetId();
    m_propGrid->Clear();
    m_propGrid->Freeze();
    if ( id == ID_POPULATE1 )
    {
        PopulateWithStandardItems();
    }
    else if ( id == ID_POPULATE2 )
    {
        PopulateWithLibraryConfig();
    }
    m_propGrid->Thaw();
}

// -----------------------------------------------------------------------

void FormMain::OnDumpList(wxCommandEvent& WXUNUSED(event))
{
    wxVariant values = m_propGridManager->GetPropertyValues("list", wxNullProperty, wxPGPropertyValuesFlags::IncAttributes);
    wxString text = "This only tests that wxVariant related routines do not crash.\n";

    wxDialog* dlg = new wxDialog(this, wxID_ANY, "wxVariant Test",
        wxDefaultPosition, wxDefaultSize, wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER);

    for ( size_t i = 0; i < values.GetCount(); i++ )
    {
        wxString t;
        wxVariant& v = values[i];

        wxString strValue = v.GetString();

        if ( v.GetName().EndsWith("@attr") )
        {
            text += wxString::Format("Attributes:\n");

            for ( size_t n = 0; n < v.GetCount(); n++ )
            {
                wxVariant& a = v[n];

                t.Printf("  attribute %i: name=\"%s\"  (type=\"%s\"  value=\"%s\")\n", (int)n,
                    a.GetName(), a.GetType(), a.GetString());
                text += t;
            }
        }
        else
        {
            t.Printf("%i: name=\"%s\"  type=\"%s\"  value=\"%s\"\n", (int)i,
                v.GetName(), v.GetType(), strValue);
            text += t;
        }
    }

    // multi-line text editor dialog
    const int spacing = 8;
    wxBoxSizer* topsizer = new wxBoxSizer(wxVERTICAL);
    wxBoxSizer* rowsizer = new wxBoxSizer(wxHORIZONTAL);
    wxTextCtrl* ed = new wxTextCtrl(dlg, wxID_ANY, text,
        wxDefaultPosition, wxDefaultSize,
        wxTE_MULTILINE | wxTE_READONLY);
    rowsizer->Add(ed, wxSizerFlags(1).Expand().Border(wxALL, spacing));
    topsizer->Add(rowsizer, wxSizerFlags(1).Expand());
    rowsizer = new wxBoxSizer(wxHORIZONTAL);
    rowsizer->Add(new wxButton(dlg, wxID_OK, "Ok"),
        wxSizerFlags(0).CentreHorizontal().CentreVertical().Border(wxBOTTOM | wxLEFT | wxRIGHT, spacing));
    topsizer->Add(rowsizer, wxSizerFlags().Right());

    dlg->SetSizer(topsizer);
    topsizer->SetSizeHints(dlg);

    dlg->SetSize(400, 300);
    dlg->Centre();
    dlg->ShowModal();
}

void DisplayMinimalFrame(wxWindow* parent);  // in minimal.cpp

void FormMain::OnRunMinimalClick( wxCommandEvent& WXUNUSED(event) )
{
    DisplayMinimalFrame(this);
}

// -----------------------------------------------------------------------

FormMain::~FormMain()
{
}

// -----------------------------------------------------------------------

wxIMPLEMENT_APP(cxApplication);

bool cxApplication::OnInit()
{
    //wxLocale Locale;
    //Locale.Init(wxLANGUAGE_FINNISH);

    FormMain* frame = new FormMain( "wxPropertyGrid Sample");
    frame->Show(true);

    return true;
}

// -----------------------------------------------------------------------

void FormMain::OnIdle( wxIdleEvent& event )
{
    /*
    // This code is useful for debugging focus problems
    static wxWindow* last_focus = nullptr;

    wxWindow* cur_focus = ::wxWindow::FindFocus();

    if ( cur_focus != last_focus )
    {
        const wxChar* class_name = "<none>";
        if ( cur_focus )
            class_name = cur_focus->GetClassInfo()->GetClassName();
        last_focus = cur_focus;
        wxLogDebug( "FOCUSED: %s %X",
            class_name,
            (unsigned int)cur_focus);
    }
    */

    event.Skip();
}

// -----------------------------------------------------------------------


wxPGProperty* GetRealRoot(wxPropertyGrid *grid)
{
    wxPGProperty *property = grid->GetRoot();
    return property ? grid->GetFirstChild(property) : nullptr;
}

void GetColumnWidths(wxPropertyGrid *grid, wxPGProperty *root, int width[3])
{
    wxPropertyGridPageState *state = grid->GetState();

    width[0] =
    width[1] =
    width[2] = 0;
    int minWidths[3] = { state->GetColumnMinWidth(0),
                         state->GetColumnMinWidth(1),
                         state->GetColumnMinWidth(2) };
    unsigned ii;
    for (ii = 0; ii < root->GetChildCount(); ++ii)
    {
        wxPGProperty* p = root->Item(ii);

        width[0] = wxMax(width[0], state->GetColumnFullWidth(p, 0));
        width[1] = wxMax(width[1], state->GetColumnFullWidth(p, 1));
        width[2] = wxMax(width[2], state->GetColumnFullWidth(p, 2));
    }
    for (ii = 0; ii < root->GetChildCount(); ++ii)
    {
        wxPGProperty* p = root->Item(ii);
        if (p->IsExpanded())
        {
            int w[3];
            GetColumnWidths(grid, p, w);
            width[0] = wxMax(width[0], w[0]);
            width[1] = wxMax(width[1], w[1]);
            width[2] = wxMax(width[2], w[2]);
        }
    }

    width[0] = wxMax(width[0], minWidths[0]);
    width[1] = wxMax(width[1], minWidths[1]);
    width[2] = wxMax(width[2], minWidths[2]);
}

void SetMinSize(wxPropertyGrid *grid)
{
    wxPGProperty *p = GetRealRoot(grid);
    wxPGProperty *first = grid->wxPropertyGridInterface::GetFirst(wxPG_ITERATE_ALL);
    wxPGProperty *last = grid->GetLastItem(wxPG_ITERATE_DEFAULT);
    wxRect rect = grid->GetPropertyRect(first, last);
    int height = rect.height + 2 * grid->GetVerticalSpacing();

    // add some height when the root item is collapsed,
    // this is needed to prevent the vertical scroll from showing
    if (!grid->IsPropertyExpanded(p))
        height += 2 * grid->GetVerticalSpacing();

    int width[3];
    GetColumnWidths(grid, grid->GetRoot(), width);
    rect.width = width[0]+width[1]+width[2];

    int minWidth = (wxSystemSettings::GetMetric(wxSYS_SCREEN_X, grid->GetParent())*3)/2;
    int minHeight = (wxSystemSettings::GetMetric(wxSYS_SCREEN_Y, grid->GetParent())*3)/2;

    wxSize size(wxMin(minWidth, rect.width + grid->GetMarginWidth()), wxMin(minHeight, height));
    grid->SetMinSize(size);

    int proportions[3];
    proportions[0] = wxRound((double)width[0]/size.x*100.0);
    proportions[1] = wxRound((double)width[1]/size.x*100.0);
    proportions[2]= wxMax(100 - proportions[0] - proportions[1], 0);
    grid->SetColumnProportion(0, proportions[0]);
    grid->SetColumnProportion(1, proportions[1]);
    grid->SetColumnProportion(2, proportions[2]);
    grid->ResetColumnSizes(true);
}

struct PropertyGridPopup : wxPopupWindow
{
    wxScrolledWindow *m_panel;
    wxPropertyGrid *m_grid;
    wxBoxSizer *m_sizer;

    PropertyGridPopup(wxWindow *parent) : wxPopupWindow(parent, wxBORDER_NONE|wxWANTS_CHARS)
    {
        m_panel = new wxScrolledWindow(this, wxID_ANY, wxDefaultPosition, wxSize(200, 200));
        m_grid = new wxPropertyGrid(m_panel, ID_POPUPGRID, wxDefaultPosition, wxSize(400,400), wxPG_SPLITTER_AUTO_CENTER);
        m_grid->SetColumnCount(3);

        wxPGProperty *prop=m_grid->Append(new wxStringProperty("test_name", wxPG_LABEL, "test_value"));
        m_grid->SetPropertyAttribute(prop, wxPG_ATTR_UNITS, "type");
        wxPGProperty *prop1 = m_grid->AppendIn(prop, new wxStringProperty("sub_name1", wxPG_LABEL, "sub_value1"));

        m_grid->AppendIn(prop1, new wxSystemColourProperty("Cell Colour",wxPG_LABEL, m_grid->GetGrid()->GetCellBackgroundColour()));
        wxPGProperty *prop2 = m_grid->AppendIn(prop, new wxStringProperty("sub_name2", wxPG_LABEL, "sub_value2"));
        m_grid->AppendIn(prop2, new wxStringProperty("sub_name21", wxPG_LABEL, "sub_value21"));

        wxArrayDouble arrdbl;
        arrdbl.Add(-1.0); arrdbl.Add(-0.5); arrdbl.Add(0.0); arrdbl.Add(0.5); arrdbl.Add(1.0);
        m_grid->AppendIn(prop, new wxArrayDoubleProperty("ArrayDoubleProperty",wxPG_LABEL,arrdbl) );
        m_grid->AppendIn(prop, new wxFontProperty("Font",wxPG_LABEL));
        m_grid->AppendIn(prop2, new wxStringProperty("sub_name22", wxPG_LABEL, "sub_value22"));
        m_grid->AppendIn(prop2, new wxStringProperty("sub_name23", wxPG_LABEL, "sub_value23"));
        prop2->SetExpanded(false);

        ::SetMinSize(m_grid);

        m_sizer = new wxBoxSizer( wxVERTICAL );
        m_sizer->Add(m_grid, wxSizerFlags(0).Expand().Border(wxALL, 0));
        m_panel->SetAutoLayout(true);
        m_panel->SetSizer(m_sizer);
        m_sizer->Fit(m_panel);
        m_sizer->Fit(this);
    }

    void OnCollapse(wxPropertyGridEvent& WXUNUSED(event))
    {
        wxLogMessage("OnCollapse");
        Fit();
    }

    void OnExpand(wxPropertyGridEvent& WXUNUSED(event))
    {
        wxLogMessage("OnExpand");
        Fit();
    }

    void Fit() override
    {
        ::SetMinSize(m_grid);
        m_sizer->Fit(m_panel);
        wxPoint pos = GetScreenPosition();
        wxSize size = m_panel->GetScreenRect().GetSize();
        SetSize(pos.x, pos.y, size.x, size.y);
    }

    wxDECLARE_ABSTRACT_CLASS(PropertyGridPopup);
    wxDECLARE_EVENT_TABLE();
};

wxIMPLEMENT_CLASS(PropertyGridPopup, wxPopupWindow);
wxBEGIN_EVENT_TABLE(PropertyGridPopup, wxPopupWindow)
    EVT_PG_ITEM_COLLAPSED(ID_POPUPGRID, PropertyGridPopup::OnCollapse)
    EVT_PG_ITEM_EXPANDED(ID_POPUPGRID, PropertyGridPopup::OnExpand)
wxEND_EVENT_TABLE()


void FormMain::OnShowPopup(wxCommandEvent& WXUNUSED(event))
{
    static PropertyGridPopup *popup = nullptr;
    if ( popup )
    {
        delete popup;
        popup = nullptr;
        return;
    }
    popup = new PropertyGridPopup(this);
    wxPoint pt = wxGetMousePosition();
    popup->Position(pt, wxSize(0, 0));
    popup->Show();
}
