src/common/pickerbase.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/pickerbase.cpp
   3 // Purpose:     wxPickerBase class implementation
   4 // Author:      Francesco Montorsi
   5 // Modified by:
   6 // Created:     15/04/2006
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Francesco Montorsi
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_COLOURPICKERCTRL || \
  28     wxUSE_DIRPICKERCTRL    || \
  29     wxUSE_FILEPICKERCTRL   || \
  30     wxUSE_FONTPICKERCTRL
  31
  32 #include "wx/pickerbase.h"
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/textctrl.h"
  36 #endif
  37
  38 // ============================================================================
  39 // implementation
  40 // ============================================================================
  41
  42 IMPLEMENT_ABSTRACT_CLASS(wxPickerBase, wxControl)
  43
  44 BEGIN_EVENT_TABLE(wxPickerBase, wxControl)
  45     EVT_SIZE(wxPickerBase::OnSize)
  46     WX_EVENT_TABLE_CONTROL_CONTAINER(wxPickerBase)
  47 END_EVENT_TABLE()
  48 WX_DELEGATE_TO_CONTROL_CONTAINER(wxPickerBase, wxControl)
  49
  50
  51 // ----------------------------------------------------------------------------
  52 // wxPickerBase
  53 // ----------------------------------------------------------------------------
  54
  55 bool wxPickerBase::CreateBase(wxWindow *parent,
  56                          wxWindowID id,
  57                          const wxString &text,
  58                          const wxPoint& pos,
  59                          const wxSize& size,
  60                          long style,
  61                          const wxValidator& validator,
  62                          const wxString& name)
  63 {
  64     // remove any border style from our style as wxPickerBase's window must be
  65     // invisible (user styles must be set on the textctrl or the platform-dependent picker)
  66     style &= ~wxBORDER_MASK;
  67     if (!wxControl::Create(parent, id, pos, size, style | wxNO_BORDER | wxTAB_TRAVERSAL,
  68                            validator, name))
  69         return false;
  70
  71     m_sizer = new wxBoxSizer(wxHORIZONTAL);
  72
  73     if (HasFlag(wxPB_USE_TEXTCTRL))
  74     {
  75         // NOTE: the style of this class (wxPickerBase) and the style of the
  76         //       attached text control are different: GetTextCtrlStyle() extracts
  77         //       the styles related to the textctrl from the styles passed here
  78         m_text = new wxTextCtrl(this, wxID_ANY, wxEmptyString, wxDefaultPosition,
  79                                 wxDefaultSize, GetTextCtrlStyle(style));
  80         if (!m_text)
  81         {
  82             wxFAIL_MSG( wxT("wxPickerBase's textctrl creation failed") );
  83             return false;
  84         }
  85
  86         // set the maximum lenght allowed for this textctrl.
  87         // This is very important since any change to it will trigger an update in
  88         // the m_picker; for very long strings, this real-time synchronization could
  89         // become a CPU-blocker and thus should be avoided.
  90         // 32 characters will be more than enough for all common uses.
  91         m_text->SetMaxLength(32);
  92
  93         // set the initial contents of the textctrl
  94         m_text->SetValue(text);
  95
  96         m_text->Connect(wxEVT_COMMAND_TEXT_UPDATED,
  97                 wxCommandEventHandler(wxPickerBase::OnTextCtrlUpdate),
  98                 NULL, this);
  99         m_text->Connect(wxEVT_KILL_FOCUS,
 100                 wxFocusEventHandler(wxPickerBase::OnTextCtrlKillFocus),
 101                 NULL, this);
 102
 103         m_text->Connect(wxEVT_DESTROY,
 104                 wxWindowDestroyEventHandler(wxPickerBase::OnTextCtrlDelete),
 105                 NULL, this);
 106
 107         // the text control's proportion values defaults to 2
 108         m_sizer->Add(m_text, 2, GetDefaultTextCtrlFlag(), 5);
 109     }
 110
 111     return true;
 112 }
 113
 114 void wxPickerBase::PostCreation()
 115 {
 116     // the picker's proportion value defaults to 1 when there's no text control
 117     // associated with it - in that case it defaults to 0
 118     m_sizer->Add(m_picker, HasTextCtrl() ? 0 : 1, GetDefaultPickerCtrlFlag(), 5);
 119
 120     SetSizer(m_sizer);
 121     m_sizer->SetSizeHints(this);
 122 }
 123
 124 void wxPickerBase::OnTextCtrlKillFocus(wxFocusEvent &)
 125 {
 126     wxASSERT(m_text);
 127
 128     // don't leave the textctrl empty
 129     if (m_text->GetValue().empty())
 130         UpdateTextCtrlFromPicker();
 131 }
 132
 133 void wxPickerBase::OnTextCtrlDelete(wxWindowDestroyEvent &)
 134 {
 135     // the textctrl has been deleted; our pointer is invalid!
 136     m_text = NULL;
 137 }
 138
 139 void wxPickerBase::OnTextCtrlUpdate(wxCommandEvent &)
 140 {
 141     // for each text-change, update the picker
 142     UpdatePickerFromTextCtrl();
 143 }
 144
 145 void wxPickerBase::OnSize(wxSizeEvent &event)
 146 {
 147     if (GetAutoLayout())
 148         Layout();
 149     event.Skip();
 150 }
 151
 152 #endif // Any picker in use