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 #include "wx/tooltip.h"
  34
  35 #ifndef WX_PRECOMP
  36     #include "wx/textctrl.h"
  37 #endif
  38
  39
  40 // ============================================================================
  41 // implementation
  42 // ============================================================================
  43
  44 IMPLEMENT_ABSTRACT_CLASS(wxPickerBase, wxControl)
  45
  46 BEGIN_EVENT_TABLE(wxPickerBase, wxControl)
  47     EVT_SIZE(wxPickerBase::OnSize)
  48     WX_EVENT_TABLE_CONTROL_CONTAINER(wxPickerBase)
  49 END_EVENT_TABLE()
  50 WX_DELEGATE_TO_CONTROL_CONTAINER(wxPickerBase, wxControl)
  51
  52
  53 // ----------------------------------------------------------------------------
  54 // wxPickerBase
  55 // ----------------------------------------------------------------------------
  56
  57 bool wxPickerBase::CreateBase(wxWindow *parent,
  58                          wxWindowID id,
  59                          const wxString &text,
  60                          const wxPoint& pos,
  61                          const wxSize& size,
  62                          long style,
  63                          const wxValidator& validator,
  64                          const wxString& name)
  65 {
  66     // remove any border style from our style as wxPickerBase's window must be
  67     // invisible (user styles must be set on the textctrl or the platform-dependent picker)
  68     style &= ~wxBORDER_MASK;
  69     if (!wxControl::Create(parent, id, pos, size, style | wxNO_BORDER | wxTAB_TRAVERSAL,
  70                            validator, name))
  71         return false;
  72
  73     m_sizer = new wxBoxSizer(wxHORIZONTAL);
  74
  75     if (HasFlag(wxPB_USE_TEXTCTRL))
  76     {
  77         // NOTE: the style of this class (wxPickerBase) and the style of the
  78         //       attached text control are different: GetTextCtrlStyle() extracts
  79         //       the styles related to the textctrl from the styles passed here
  80         m_text = new wxTextCtrl(this, wxID_ANY, wxEmptyString,
  81                                 wxDefaultPosition, wxDefaultSize,
  82                                 GetTextCtrlStyle(style));
  83         if (!m_text)
  84         {
  85             wxFAIL_MSG( wxT("wxPickerBase's textctrl creation failed") );
  86             return false;
  87         }
  88
  89         // set the maximum lenght allowed for this textctrl.
  90         // This is very important since any change to it will trigger an update in
  91         // the m_picker; for very long strings, this real-time synchronization could
  92         // become a CPU-blocker and thus should be avoided.
  93         // 32 characters will be more than enough for all common uses.
  94         m_text->SetMaxLength(32);
  95
  96         // set the initial contents of the textctrl
  97         m_text->SetValue(text);
  98
  99         m_text->Connect(wxEVT_COMMAND_TEXT_UPDATED,
 100                 wxCommandEventHandler(wxPickerBase::OnTextCtrlUpdate),
 101                 NULL, this);
 102         m_text->Connect(wxEVT_KILL_FOCUS,
 103                 wxFocusEventHandler(wxPickerBase::OnTextCtrlKillFocus),
 104                 NULL, this);
 105
 106         m_text->Connect(wxEVT_DESTROY,
 107                 wxWindowDestroyEventHandler(wxPickerBase::OnTextCtrlDelete),
 108                 NULL, this);
 109
 110         // the text control's proportion values defaults to 2
 111         m_sizer->Add(m_text, 2, GetDefaultTextCtrlFlag(), 5);
 112     }
 113
 114     return true;
 115 }
 116
 117 void wxPickerBase::PostCreation()
 118 {
 119     // the picker's proportion value defaults to 1 when there's no text control
 120     // associated with it - in that case it defaults to 0
 121     m_sizer->Add(m_picker, HasTextCtrl() ? 0 : 1, GetDefaultPickerCtrlFlag(), 5);
 122
 123     SetSizer(m_sizer);
 124     SetMinSize( m_sizer->GetMinSize() );
 125 }
 126
 127 #if wxUSE_TOOLTIPS
 128
 129 void wxPickerBase::DoSetToolTip(wxToolTip *tip)
 130 {
 131     // don't set the tooltip on us but rather on our two child windows
 132     // as otherwise it would appear only when the cursor is placed on the
 133     // small area around the child windows which belong to wxPickerBase
 134     m_picker->SetToolTip(tip);
 135
 136     // do a copy as wxWindow will own the pointer we pass
 137     if ( m_text )
 138         m_text->SetToolTip(tip ? new wxToolTip(tip->GetTip()) : NULL);
 139 }
 140
 141 #endif // wxUSE_TOOLTIPS
 142
 143 // ----------------------------------------------------------------------------
 144 // wxPickerBase - event handlers
 145 // ----------------------------------------------------------------------------
 146
 147 void wxPickerBase::OnTextCtrlKillFocus(wxFocusEvent &)
 148 {
 149     wxASSERT(m_text);
 150
 151     // don't leave the textctrl empty
 152     if (m_text->GetValue().empty())
 153         UpdateTextCtrlFromPicker();
 154 }
 155
 156 void wxPickerBase::OnTextCtrlDelete(wxWindowDestroyEvent &)
 157 {
 158     // the textctrl has been deleted; our pointer is invalid!
 159     m_text = NULL;
 160 }
 161
 162 void wxPickerBase::OnTextCtrlUpdate(wxCommandEvent &)
 163 {
 164     // for each text-change, update the picker
 165     UpdatePickerFromTextCtrl();
 166 }
 167
 168 void wxPickerBase::OnSize(wxSizeEvent &event)
 169 {
 170     if (GetAutoLayout())
 171         Layout();
 172     event.Skip();
 173 }
 174
 175 #endif // Any picker in use