src/common/filepickercmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/filepickercmn.cpp
   3 // Purpose:     wxFilePickerCtrl class implementation
   4 // Author:      Francesco Montorsi (readapted code written by Vadim Zeitlin)
   5 // Modified by:
   6 // Created:     15/04/2006
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin, 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_FILEPICKERCTRL || wxUSE_DIRPICKERCTRL
  28
  29 #include "wx/filepicker.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/textctrl.h"
  33 #endif
  34
  35 // ============================================================================
  36 // implementation
  37 // ============================================================================
  38
  39 DEFINE_EVENT_TYPE(wxEVT_COMMAND_FILEPICKER_CHANGED)
  40 DEFINE_EVENT_TYPE(wxEVT_COMMAND_DIRPICKER_CHANGED)
  41 IMPLEMENT_DYNAMIC_CLASS(wxFileDirPickerEvent, wxCommandEvent)
  42
  43 // ----------------------------------------------------------------------------
  44 // wxFileDirPickerCtrlBase
  45 // ----------------------------------------------------------------------------
  46
  47 #define M_PICKER     ((wxFilePickerWidget*)m_picker)
  48
  49 bool wxFileDirPickerCtrlBase::CreateBase( wxWindow *parent, wxWindowID id,
  50                         const wxString &path, const wxString &message,
  51                         const wxString &wildcard,
  52                         const wxPoint &pos, const wxSize &size,
  53                         long style, const wxValidator& validator,
  54                         const wxString &name )
  55 {
  56     wxASSERT_MSG(path.empty() || CheckPath(path), wxT("Invalid initial path !"));
  57
  58     if (!wxPickerBase::CreateBase(parent, id, path, pos, size,
  59                                    style, validator, name))
  60         return false;
  61
  62     if (!HasFlag(wxFLP_OPEN) && !HasFlag(wxFLP_SAVE))
  63         m_windowStyle |= wxFLP_OPEN;     // wxFD_OPEN is the default
  64
  65     // check that the styles are not contradictory
  66     wxASSERT_MSG( !(HasFlag(wxFLP_SAVE) && HasFlag(wxFLP_OPEN)),
  67                   _T("can't specify both wxFLP_SAVE and wxFLP_OPEN at once") );
  68
  69     wxASSERT_MSG( !HasFlag(wxFLP_SAVE) || !HasFlag(wxFLP_FILE_MUST_EXIST),
  70                    _T("wxFLP_FILE_MUST_EXIST can't be used with wxFLP_SAVE" ) );
  71
  72     wxASSERT_MSG( !HasFlag(wxFLP_OPEN) || !HasFlag(wxFLP_OVERWRITE_PROMPT),
  73                   _T("wxFLP_OVERWRITE_PROMPT can't be used with wxFLP_OPEN") );
  74
  75     // create a wxFilePickerWidget or a wxDirPickerWidget...
  76     if (!CreatePicker(this, path, message, wildcard))
  77         return false;
  78     m_picker->Connect(GetEventType(),
  79             wxFileDirPickerEventHandler(wxFileDirPickerCtrlBase::OnFileDirChange),
  80             NULL, this);
  81
  82     // default's wxPickerBase textctrl limit is too small for this control:
  83     // make it bigger
  84     if (m_text) m_text->SetMaxLength(512);
  85
  86     return true;
  87 }
  88
  89 void wxFileDirPickerCtrlBase::SetPath(const wxString &path)
  90 {
  91     M_PICKER->SetPath(path);
  92     UpdateTextCtrlFromPicker();
  93 }
  94
  95 void wxFileDirPickerCtrlBase::UpdatePickerFromTextCtrl()
  96 {
  97     wxASSERT(m_text);
  98
  99     if (m_bIgnoreNextTextCtrlUpdate)
 100     {
 101         // ignore this update
 102         m_bIgnoreNextTextCtrlUpdate = false;
 103         return;
 104     }
 105
 106     // remove the eventually present path-separator from the end of the textctrl
 107     // string otherwise we would generate a wxFileDirPickerEvent when changing
 108     // from e.g. /home/user to /home/user/ and we want to avoid it !
 109     wxString newpath(m_text->GetValue());
 110     if (!newpath.empty() && wxFileName::IsPathSeparator(newpath.Last()))
 111         newpath.RemoveLast();
 112     if (!CheckPath(newpath))
 113         return;       // invalid user input
 114
 115     if (M_PICKER->GetPath() != newpath)
 116     {
 117         M_PICKER->SetPath(newpath);
 118
 119         // update current working directory, if necessary
 120         // NOTE: the path separator is required because if newpath is "C:"
 121         //       then no change would happen
 122         if (IsCwdToUpdate())
 123             wxSetWorkingDirectory(newpath + wxFileName::GetPathSeparator());
 124
 125         // fire an event
 126         wxFileDirPickerEvent event(GetEventType(), this, GetId(), newpath);
 127         GetEventHandler()->ProcessEvent(event);
 128     }
 129 }
 130
 131 void wxFileDirPickerCtrlBase::UpdateTextCtrlFromPicker()
 132 {
 133     if (!m_text)
 134         return;     // no textctrl to update
 135
 136     // NOTE: this SetValue() will generate an unwanted wxEVT_COMMAND_TEXT_UPDATED
 137     //       which will trigger a unneeded UpdateFromTextCtrl(); thus before using
 138     //       SetValue() we set the m_bIgnoreNextTextCtrlUpdate flag...
 139     m_bIgnoreNextTextCtrlUpdate = true;
 140     m_text->SetValue(M_PICKER->GetPath());
 141 }
 142
 143
 144
 145 // ----------------------------------------------------------------------------
 146 // wxFileDirPickerCtrlBase - event handlers
 147 // ----------------------------------------------------------------------------
 148
 149 void wxFileDirPickerCtrlBase::OnFileDirChange(wxFileDirPickerEvent &ev)
 150 {
 151     UpdateTextCtrlFromPicker();
 152
 153     // the wxFilePickerWidget sent us a colour-change notification.
 154     // forward this event to our parent
 155     wxFileDirPickerEvent event(GetEventType(), this, GetId(), ev.GetPath());
 156     GetEventHandler()->ProcessEvent(event);
 157 }
 158
 159 #endif  // wxUSE_FILEPICKERCTRL || wxUSE_DIRPICKERCTRL
 160
 161 #if wxUSE_FILEPICKERCTRL
 162 IMPLEMENT_DYNAMIC_CLASS(wxFilePickerCtrl, wxPickerBase)
 163 #endif
 164 #if wxUSE_DIRPICKERCTRL
 165 IMPLEMENT_DYNAMIC_CLASS(wxDirPickerCtrl, wxPickerBase)
 166 #endif