src/gtk/filepicker.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/filepicker.cpp
   3 // Purpose:     implementation of wxFileButton and wxDirButton
   4 // Author:      Francesco Montorsi
   5 // Modified By:
   6 // Created:     15/04/2006
   7 // Id:          $Id$
   8 // Copyright:   (c) Francesco Montorsi
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12
  13 // ----------------------------------------------------------------------------
  14 // headers
  15 // ----------------------------------------------------------------------------
  16
  17 // For compilers that support precompilation, includes "wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #if wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
  21
  22 #include "wx/filepicker.h"
  23 #include "wx/tooltip.h"
  24
  25 #include "wx/gtk/private.h"
  26
  27 // ============================================================================
  28 // implementation
  29 // ============================================================================
  30
  31 //-----------------------------------------------------------------------------
  32 // wxFileButton
  33 //-----------------------------------------------------------------------------
  34
  35 IMPLEMENT_DYNAMIC_CLASS(wxFileButton, wxButton)
  36
  37 bool wxFileButton::Create( wxWindow *parent, wxWindowID id,
  38                         const wxString &label, const wxString &path,
  39                         const wxString &message, const wxString &wildcard,
  40                         const wxPoint &pos, const wxSize &size,
  41                         long style, const wxValidator& validator,
  42                         const wxString &name )
  43 {
  44     // we can't use the native button for wxFLP_SAVE pickers as it can only
  45     // open existing files and there is no way to create a new file using it
  46     if ( !(style & wxFLP_SAVE) && !(style & wxFLP_USE_TEXTCTRL) && !gtk_check_version(2,6,0) )
  47     {
  48         // VERY IMPORTANT: this code is identical to relative code in wxDirButton;
  49         //                 if you find a problem here, fix it also in wxDirButton !
  50
  51         if (!PreCreation( parent, pos, size ) ||
  52             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
  53                                     validator, name))
  54         {
  55             wxFAIL_MSG( wxT("wxFileButton creation failed") );
  56             return false;
  57         }
  58
  59         // create the dialog associated with this button
  60         // NB: unlike generic implementation, native GTK implementation needs to create
  61         //     the filedialog here as it needs to use gtk_file_chooser_button_new_with_dialog()
  62         SetWindowStyle(style);
  63         m_path = path;
  64         m_message = message;
  65         m_wildcard = wildcard;
  66         if ((m_dialog = CreateDialog()) == NULL)
  67             return false;
  68
  69         // little trick used to avoid problems when there are other GTK windows 'grabbed':
  70         // GtkFileChooserDialog won't be responsive to user events if there is another
  71         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
  72         // in modal mode in the application - see wxDialogGTK::ShowModal).
  73         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
  74         // is clicked and then remove it as soon as the user closes the dialog itself.
  75         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
  76         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
  77         // hidden simply using its "show" and "hide" events - clean & simple :)
  78         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
  79         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
  80
  81         //       use as label the currently selected file
  82         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
  83
  84         g_object_ref(m_widget);
  85         gtk_widget_show(m_widget);
  86
  87         // we need to know when the dialog has been dismissed clicking OK...
  88         // NOTE: the "clicked" signal is not available for a GtkFileChooserButton
  89         //       thus we are forced to use wxFileDialog's event
  90         m_dialog->Connect(wxEVT_COMMAND_BUTTON_CLICKED,
  91                 wxCommandEventHandler(wxFileButton::OnDialogOK),
  92                 NULL, this);
  93
  94         m_parent->DoAddChild( this );
  95
  96         PostCreation(size);
  97         SetInitialSize(size);
  98     }
  99     else
 100         return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
 101                                            pos, size, style, validator, name);
 102     return true;
 103 }
 104
 105 wxFileButton::~wxFileButton()
 106 {
 107 }
 108
 109 void wxFileButton::OnDialogOK(wxCommandEvent& ev)
 110 {
 111     // the wxFileDialog associated with the GtkFileChooserButton has been closed
 112     // using the OK button, thus the selected file has changed...
 113     if (ev.GetId() == wxID_OK)
 114     {
 115         // ...update our path
 116         UpdatePathFromDialog(m_dialog);
 117
 118         // ...and fire an event
 119         wxFileDirPickerEvent event(wxEVT_COMMAND_FILEPICKER_CHANGED, this, GetId(), m_path);
 120         HandleWindowEvent(event);
 121     }
 122 }
 123
 124 void wxFileButton::SetPath(const wxString &str)
 125 {
 126     m_path = str;
 127
 128     if (m_dialog)
 129         UpdateDialogPath(m_dialog);
 130 }
 131
 132 #endif      // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
 133
 134
 135
 136
 137 #if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
 138
 139 #include <unistd.h> // chdir
 140
 141 //-----------------------------------------------------------------------------
 142 // "current-folder-changed"
 143 //-----------------------------------------------------------------------------
 144
 145 extern "C" {
 146 static void gtk_dirbutton_currentfolderchanged_callback(GtkFileChooserButton *widget,
 147                                                         wxDirButton *p)
 148 {
 149     // update the m_path member of the wxDirButtonGTK
 150     // unless the path was changed by wxDirButton::SetPath()
 151     if (p->m_bIgnoreNextChange)
 152     {
 153         p->m_bIgnoreNextChange=false;
 154         return;
 155     }
 156     wxASSERT(p);
 157
 158     // NB: it's important to use gtk_file_chooser_get_filename instead of
 159     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 160     wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
 161     p->GTKUpdatePath(filename);
 162
 163     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 164     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 165     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 166     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 167     // style was given.
 168     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 169         chdir(filename);
 170
 171     // ...and fire an event
 172     wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 173     p->HandleWindowEvent(event);
 174 }
 175 }
 176
 177
 178 //-----------------------------------------------------------------------------
 179 // wxDirButtonGTK
 180 //-----------------------------------------------------------------------------
 181
 182 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 183
 184 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 185                         const wxString &label, const wxString &path,
 186                         const wxString &message, const wxString &wildcard,
 187                         const wxPoint &pos, const wxSize &size,
 188                         long style, const wxValidator& validator,
 189                         const wxString &name )
 190 {
 191     if ( !(style & wxDIRP_USE_TEXTCTRL) && !gtk_check_version(2,6,0) )
 192     {
 193         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 194         //                 if you find a problem here, fix it also in wxFileButton !
 195
 196         if (!PreCreation( parent, pos, size ) ||
 197             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 198                                     validator, name))
 199         {
 200             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 201             return false;
 202         }
 203
 204         // create the dialog associated with this button
 205         SetWindowStyle(style);
 206         m_message = message;
 207         m_wildcard = wildcard;
 208         if ((m_dialog = CreateDialog()) == NULL)
 209             return false;
 210         SetPath(path);
 211
 212         // little trick used to avoid problems when there are other GTK windows 'grabbed':
 213         // GtkFileChooserDialog won't be responsive to user events if there is another
 214         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
 215         // in modal mode in the application - see wxDialogGTK::ShowModal).
 216         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
 217         // is clicked and then remove it as soon as the user closes the dialog itself.
 218         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
 219         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
 220         // hidden simply using its "show" and "hide" events - clean & simple :)
 221         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
 222         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
 223
 224
 225         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
 226         //       use as label the currently selected file
 227         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
 228         g_object_ref(m_widget);
 229
 230
 231         gtk_widget_show(m_widget);
 232
 233         // GtkFileChooserButton signals
 234         g_signal_connect(m_widget, "current-folder-changed",
 235                          G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
 236
 237         m_parent->DoAddChild( this );
 238
 239         PostCreation(size);
 240         SetInitialSize(size);
 241     }
 242     else
 243         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
 244                                           pos, size, style, validator, name);
 245     return true;
 246 }
 247
 248 wxDirButton::~wxDirButton()
 249 {
 250 }
 251
 252 void wxDirButton::GTKUpdatePath(const char *gtkpath)
 253 {
 254     m_path = wxString::FromUTF8(gtkpath);
 255 }
 256 void wxDirButton::SetPath(const wxString& str)
 257 {
 258     if ( m_path == str )
 259     {
 260         // don't do anything and especially don't set m_bIgnoreNextChange
 261         return;
 262     }
 263
 264     m_path = str;
 265
 266     // wxDirButton uses the "current-folder-changed" signal which is triggered also
 267     // when we set the path on the dialog associated with this button; thus we need
 268     // to set the following flag to avoid sending a wxFileDirPickerEvent from this
 269     // function (which would be inconsistent with wxFileButton's behaviour and in
 270     // general with all wxWidgets control-manipulation functions which do not send events).
 271     m_bIgnoreNextChange = true;
 272
 273     if (m_dialog)
 274         UpdateDialogPath(m_dialog);
 275 }
 276
 277 #endif      // wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)