wxWidgets/include/wx/propgrid/editors.h

/////////////////////////////////////////////////////////////////////////////
// Name:        wx/propgrid/editors.h
// Purpose:     wxPropertyGrid editors
// Author:      Jaakko Salli
// Modified by:
// Created:     2007-04-14
// Copyright:   (c) Jaakko Salli
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_PROPGRID_EDITORS_H_
#define _WX_PROPGRID_EDITORS_H_

#include "wx/defs.h"

#if wxUSE_PROPGRID

class WXDLLIMPEXP_FWD_PROPGRID wxPGCell;
class WXDLLIMPEXP_FWD_PROPGRID wxPGProperty;
class WXDLLIMPEXP_FWD_PROPGRID wxPropertyGrid;

// -----------------------------------------------------------------------
// wxPGWindowList contains list of editor windows returned by CreateControls.

class wxPGWindowList
{
public:
    wxPGWindowList()
    {
        m_primary = m_secondary = NULL;
    }

    void SetSecondary( wxWindow* secondary ) { m_secondary = secondary; }

    wxWindow*   m_primary;
    wxWindow*   m_secondary;

    wxPGWindowList( wxWindow* a )
    {
        m_primary = a;
        m_secondary = NULL;
    }
    wxPGWindowList( wxWindow* a, wxWindow* b )
    {
        m_primary = a;
        m_secondary = b;
    }
};

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

/** @class wxPGEditor

    Base class for custom wxPropertyGrid editors.

    @remarks
    - Names of builtin property editors are: TextCtrl, Choice,
      ComboBox, CheckBox, TextCtrlAndButton, and ChoiceAndButton. Additional
      editors include SpinCtrl and DatePickerCtrl, but using them requires
      calling wxPropertyGrid::RegisterAdditionalEditors() prior use.

    - Pointer to builtin editor is available as wxPGEditor_EditorName
      (eg. wxPGEditor_TextCtrl).

    - To add new editor you need to register it first using static function
      wxPropertyGrid::RegisterEditorClass(), with code like this:
        @code
            wxPGEditor *editorPointer = wxPropertyGrid::RegisterEditorClass(
                                            new MyEditorClass(), "MyEditor");
        @endcode
      After that, wxPropertyGrid will take ownership of the given object, but
      you should still store editorPointer somewhere, so you can pass it to
      wxPGProperty::SetEditor(), or return it from
      wxPGEditor::DoGetEditorClass().

    @library{wxpropgrid}
    @category{propgrid}
*/
class WXDLLIMPEXP_PROPGRID wxPGEditor : public wxObject
{
    wxDECLARE_ABSTRACT_CLASS(wxPGEditor);
public:

    /** Constructor. */
    wxPGEditor()
        : wxObject()
    {
        m_clientData = NULL;
    }

    /** Destructor. */
    virtual ~wxPGEditor();

    /**
        Returns pointer to the name of the editor. For example,
        wxPGEditor_TextCtrl has name "TextCtrl". If you dont' need to access
        your custom editor by string name, then you do not need to implement
        this function.
    */
    virtual wxString GetName() const;

    /**
        Instantiates editor controls.

        @param propgrid
            wxPropertyGrid to which the property belongs (use as parent for
            control).
        @param property
            Property for which this method is called.
        @param pos
            Position, inside wxPropertyGrid, to create control(s) to.
        @param size
            Initial size for control(s).

        @remarks
        - Unlike in previous version of wxPropertyGrid, it is no longer
          necessary to call wxEvtHandler::Connect() for interesting editor
          events. Instead, all events from control are now automatically
          forwarded to wxPGEditor::OnEvent() and wxPGProperty::OnEvent().
    */
    virtual wxPGWindowList CreateControls(wxPropertyGrid* propgrid,
                                          wxPGProperty* property,
                                          const wxPoint& pos,
                                          const wxSize& size) const = 0;

    /** Loads value from property to the control. */
    virtual void UpdateControl( wxPGProperty* property,
                                wxWindow* ctrl ) const = 0;

    /**
        Used to get the renderer to draw the value with when the control is
        hidden.

        Default implementation returns g_wxPGDefaultRenderer.
    */
    //virtual wxPGCellRenderer* GetCellRenderer() const;

    /** Draws value for given property.
    */
    virtual void DrawValue( wxDC& dc,
                            const wxRect& rect,
                            wxPGProperty* property,
                            const wxString& text ) const;

    /** Handles events. Returns true if value in control was modified
        (see wxPGProperty::OnEvent for more information).

        @remarks wxPropertyGrid will automatically unfocus the editor when
                wxEVT_TEXT_ENTER is received and when it results in
                property value being modified. This happens regardless of
                editor type (ie. behaviour is same for any wxTextCtrl and
                wxComboBox based editor).
    */
    virtual bool OnEvent( wxPropertyGrid* propgrid, wxPGProperty* property,
        wxWindow* wnd_primary, wxEvent& event ) const = 0;

    /** Returns value from control, via parameter 'variant'.
        Usually ends up calling property's StringToValue or IntToValue.
        Returns true if value was different.
    */
    virtual bool GetValueFromControl( wxVariant& variant,
                                      wxPGProperty* property,
                                      wxWindow* ctrl ) const;

    /**
        Sets new appearance for the control. Default implementation
        sets foreground colour, background colour, font, plus text
        for wxTextCtrl and wxComboCtrl.

        @param appearance
            New appearance to be applied.

        @param oldAppearance
            Previously applied appearance. Used to detect which
            control attributes need to be changed (e.g. so we only
            change background colour if really needed).

        @param unspecified
            @true if the new appearance represents an unspecified
            property value.
    */
    virtual void SetControlAppearance( wxPropertyGrid* pg,
                                       wxPGProperty* property,
                                       wxWindow* ctrl,
                                       const wxPGCell& appearance,
                                       const wxPGCell& oldAppearance,
                                       bool unspecified ) const;

    /**
        Sets value in control to unspecified.
    */
    virtual void SetValueToUnspecified( wxPGProperty* property,
                                        wxWindow* ctrl ) const;

    /** Sets control's value specifically from string. */
    virtual void SetControlStringValue( wxPGProperty* property,
                                        wxWindow* ctrl,
                                        const wxString& txt ) const;

    /** Sets control's value specifically from int (applies to choice etc.). */
    virtual void SetControlIntValue( wxPGProperty* property,
                                     wxWindow* ctrl,
                                     int value ) const;

    /** Inserts item to existing control. Index -1 means appending.
        Default implementation does nothing. Returns index of item added.
    */
    virtual int InsertItem( wxWindow* ctrl,
                            const wxString& label,
                            int index ) const;

    /** Deletes item from existing control.
        Default implementation does nothing.
    */
    virtual void DeleteItem( wxWindow* ctrl, int index ) const;

    /** Extra processing when control gains focus. For example, wxTextCtrl
        based controls should select all text.
    */
    virtual void OnFocus( wxPGProperty* property, wxWindow* wnd ) const;

    /** Returns true if control itself can contain the custom image. Default is
        to return false.
    */
    virtual bool CanContainCustomImage() const;

    //
    // This member is public so scripting language bindings
    // wrapper code can access it freely.
    void*       m_clientData;
};


#define WX_PG_IMPLEMENT_INTERNAL_EDITOR_CLASS(EDITOR,CLASSNAME,BASECLASS) \
wxIMPLEMENT_DYNAMIC_CLASS(CLASSNAME, BASECLASS); \
wxString CLASSNAME::GetName() const \
{ \
    return wxS(#EDITOR); \
} \
wxPGEditor* wxPGEditor_##EDITOR = NULL;


//
// Following are the built-in editor classes.
//

class WXDLLIMPEXP_PROPGRID wxPGTextCtrlEditor : public wxPGEditor
{
    wxDECLARE_DYNAMIC_CLASS(wxPGTextCtrlEditor);
public:
    wxPGTextCtrlEditor() {}
    virtual ~wxPGTextCtrlEditor();

    virtual wxPGWindowList CreateControls(wxPropertyGrid* propgrid,
                                          wxPGProperty* property,
                                          const wxPoint& pos,
                                          const wxSize& size) const;
    virtual void UpdateControl( wxPGProperty* property,
                                wxWindow* ctrl ) const;
    virtual bool OnEvent( wxPropertyGrid* propgrid,
                          wxPGProperty* property,
                          wxWindow* primaryCtrl,
                          wxEvent& event ) const;
    virtual bool GetValueFromControl( wxVariant& variant,
                                      wxPGProperty* property,
                                      wxWindow* ctrl ) const;

    virtual wxString GetName() const;

    //virtual wxPGCellRenderer* GetCellRenderer() const;
    virtual void SetControlStringValue( wxPGProperty* property,
                                        wxWindow* ctrl,
                                        const wxString& txt ) const;
    virtual void OnFocus( wxPGProperty* property, wxWindow* wnd ) const;

    // Provided so that, for example, ComboBox editor can use the same code
    // (multiple inheritance would get way too messy).
    static bool OnTextCtrlEvent( wxPropertyGrid* propgrid,
                                 wxPGProperty* property,
                                 wxWindow* ctrl,
                                 wxEvent& event );

    static bool GetTextCtrlValueFromControl( wxVariant& variant,
                                             wxPGProperty* property,
                                             wxWindow* ctrl );

};


class WXDLLIMPEXP_PROPGRID wxPGChoiceEditor : public wxPGEditor
{
    wxDECLARE_DYNAMIC_CLASS(wxPGChoiceEditor);
public:
    wxPGChoiceEditor() {}
    virtual ~wxPGChoiceEditor();

    virtual wxPGWindowList CreateControls(wxPropertyGrid* propgrid,
                                          wxPGProperty* property,
                                          const wxPoint& pos,
                                          const wxSize& size) const;
    virtual void UpdateControl( wxPGProperty* property,
                                wxWindow* ctrl ) const;
    virtual bool OnEvent( wxPropertyGrid* propgrid,
                          wxPGProperty* property,
                          wxWindow* primaryCtrl,
                          wxEvent& event ) const;
    virtual bool GetValueFromControl( wxVariant& variant,
                                      wxPGProperty* property,
                                      wxWindow* ctrl ) const;
    virtual void SetValueToUnspecified( wxPGProperty* property,
                                        wxWindow* ctrl ) const;
    virtual wxString GetName() const;

    virtual void SetControlIntValue( wxPGProperty* property,
                                     wxWindow* ctrl,
                                     int value ) const;
    virtual void SetControlStringValue( wxPGProperty* property,
                                        wxWindow* ctrl,
                                        const wxString& txt ) const;

    virtual int InsertItem( wxWindow* ctrl,
                            const wxString& label,
                            int index ) const;
    virtual void DeleteItem( wxWindow* ctrl, int index ) const;
    virtual bool CanContainCustomImage() const;

    // CreateControls calls this with CB_READONLY in extraStyle
    wxWindow* CreateControlsBase( wxPropertyGrid* propgrid,
                                  wxPGProperty* property,
                                  const wxPoint& pos,
                                  const wxSize& sz,
                                  long extraStyle ) const;

};


class WXDLLIMPEXP_PROPGRID wxPGComboBoxEditor : public wxPGChoiceEditor
{
    wxDECLARE_DYNAMIC_CLASS(wxPGComboBoxEditor);
public:
    wxPGComboBoxEditor() {}
    virtual ~wxPGComboBoxEditor();

    virtual wxPGWindowList CreateControls(wxPropertyGrid* propgrid,
                                          wxPGProperty* property,
                                          const wxPoint& pos,
                                          const wxSize& size) const;

    virtual wxString GetName() const;

    virtual void UpdateControl( wxPGProperty* property, wxWindow* ctrl ) const;

    virtual bool OnEvent( wxPropertyGrid* propgrid, wxPGProperty* property,
        wxWindow* ctrl, wxEvent& event ) const;

    virtual bool GetValueFromControl( wxVariant& variant,
                                      wxPGProperty* property,
                                      wxWindow* ctrl ) const;

    virtual void OnFocus( wxPGProperty* property, wxWindow* wnd ) const;

};


class WXDLLIMPEXP_PROPGRID wxPGChoiceAndButtonEditor : public wxPGChoiceEditor
{
public:
    wxPGChoiceAndButtonEditor() {}
    virtual ~wxPGChoiceAndButtonEditor();
    virtual wxString GetName() const;

    virtual wxPGWindowList CreateControls(wxPropertyGrid* propgrid,
                                          wxPGProperty* property,
                                          const wxPoint& pos,
                                          const wxSize& size) const;

    wxDECLARE_DYNAMIC_CLASS(wxPGChoiceAndButtonEditor);
};

class WXDLLIMPEXP_PROPGRID
wxPGTextCtrlAndButtonEditor : public wxPGTextCtrlEditor
{
public:
    wxPGTextCtrlAndButtonEditor() {}
    virtual ~wxPGTextCtrlAndButtonEditor();
    virtual wxString GetName() const;

    virtual wxPGWindowList CreateControls(wxPropertyGrid* propgrid,
                                          wxPGProperty* property,
                                          const wxPoint& pos,
                                          const wxSize& size) const;

    wxDECLARE_DYNAMIC_CLASS(wxPGTextCtrlAndButtonEditor);
};


#if wxPG_INCLUDE_CHECKBOX

//
// Use custom check box code instead of native control
// for cleaner (ie. more integrated) look.
//
class WXDLLIMPEXP_PROPGRID wxPGCheckBoxEditor : public wxPGEditor
{
    wxDECLARE_DYNAMIC_CLASS(wxPGCheckBoxEditor);
public:
    wxPGCheckBoxEditor() {}
    virtual ~wxPGCheckBoxEditor();

    virtual wxString GetName() const;
    virtual wxPGWindowList CreateControls(wxPropertyGrid* propgrid,
                                          wxPGProperty* property,
                                          const wxPoint& pos,
                                          const wxSize& size) const;
    virtual void UpdateControl( wxPGProperty* property,
                                wxWindow* ctrl ) const;
    virtual bool OnEvent( wxPropertyGrid* propgrid,
                          wxPGProperty* property,
                          wxWindow* primaryCtrl,
                          wxEvent& event ) const;
    virtual bool GetValueFromControl( wxVariant& variant,
                                      wxPGProperty* property,
                                      wxWindow* ctrl ) const;
    virtual void SetValueToUnspecified( wxPGProperty* property,
                                        wxWindow* ctrl ) const;

    virtual void DrawValue( wxDC& dc,
                            const wxRect& rect,
                            wxPGProperty* property,
                            const wxString& text ) const;
    //virtual wxPGCellRenderer* GetCellRenderer() const;

    virtual void SetControlIntValue( wxPGProperty* property,
                                     wxWindow* ctrl,
                                     int value ) const;
};

#endif


// -----------------------------------------------------------------------
// Editor class registeration macro (mostly for internal use)

#define wxPGRegisterEditorClass(EDITOR) \
    if ( wxPGEditor_##EDITOR == NULL ) \
    { \
        wxPGEditor_##EDITOR = wxPropertyGrid::RegisterEditorClass( \
                new wxPG##EDITOR##Editor ); \
    }

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

/** @class wxPGEditorDialogAdapter

    Derive a class from this to adapt an existing editor dialog or function to
    be used when editor button of a property is pushed.

    You only need to derive class and implement DoShowDialog() to create and
    show the dialog, and finally submit the value returned by the dialog
    via SetValue().

    @library{wxpropgrid}
    @category{propgrid}
*/
class WXDLLIMPEXP_PROPGRID wxPGEditorDialogAdapter : public wxObject
{
    wxDECLARE_ABSTRACT_CLASS(wxPGEditorDialogAdapter);
public:
    wxPGEditorDialogAdapter()
        : wxObject()
    {
        m_clientData = NULL;
    }

    virtual ~wxPGEditorDialogAdapter() { }

    bool ShowDialog( wxPropertyGrid* propGrid, wxPGProperty* property );

    virtual bool DoShowDialog( wxPropertyGrid* propGrid,
                               wxPGProperty* property ) = 0;

    void SetValue( wxVariant value )
    {
        m_value = value;
    }

    /**
        This method is typically only used if deriving class from existing
        adapter with value conversion purposes.
    */
    wxVariant& GetValue() { return m_value; }

    //
    // This member is public so scripting language bindings
    // wrapper code can access it freely.
    void*               m_clientData;

private:
    wxVariant           m_value;
};

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


/** @class wxPGMultiButton

    This class can be used to have multiple buttons in a property editor.
    You will need to create a new property editor class, override
    CreateControls, and have it return wxPGMultiButton instance in
    wxPGWindowList::SetSecondary().
*/
class WXDLLIMPEXP_PROPGRID wxPGMultiButton : public wxWindow
{
public:
    wxPGMultiButton( wxPropertyGrid* pg, const wxSize& sz );
    virtual ~wxPGMultiButton() {}

    wxWindow* GetButton( unsigned int i ) { return (wxWindow*) m_buttons[i]; }
    const wxWindow* GetButton( unsigned int i ) const
        { return (const wxWindow*) m_buttons[i]; }

    /** Utility function to be used in event handlers.
    */
    int GetButtonId( unsigned int i ) const { return GetButton(i)->GetId(); }

    /** Returns number of buttons.
    */
    unsigned int GetCount() const { return (unsigned int) m_buttons.size(); }

    void Add( const wxString& label, int id = -2 );
#if wxUSE_BMPBUTTON
    void Add( const wxBitmap& bitmap, int id = -2 );
#endif

    wxSize GetPrimarySize() const
    {
        return wxSize(m_fullEditorSize.x - m_buttonsWidth, m_fullEditorSize.y);
    }

    void Finalize( wxPropertyGrid* propGrid, const wxPoint& pos );

protected:

    void DoAddButton( wxWindow* button, const wxSize& sz );

    int GenId( int id ) const;

    wxArrayPtrVoid  m_buttons;
    wxSize          m_fullEditorSize;
    int             m_buttonsWidth;
};

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

#endif // wxUSE_PROPGRID

#endif // _WX_PROPGRID_EDITORS_H_