src/gtk/filedlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/filedlg.cpp
   3 // Purpose:     native implementation of wxFileDialog
   4 // Author:      Robert Roebling, Zbigniew Zagorski, Mart Raudsepp
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, 2004 Zbigniew Zagorski, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_FILEDLG
  14
  15 #include "wx/filedlg.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19     #include "wx/msgdlg.h"
  20 #endif
  21
  22 #include <gtk/gtk.h>
  23 #include "wx/gtk/private.h"
  24
  25 #include <unistd.h> // chdir
  26
  27 #include "wx/filename.h" // wxFilename
  28 #include "wx/tokenzr.h" // wxStringTokenizer
  29 #include "wx/filefn.h" // ::wxGetCwd
  30
  31 //-----------------------------------------------------------------------------
  32 // "clicked" for OK-button
  33 //-----------------------------------------------------------------------------
  34
  35 extern "C" {
  36 static void gtk_filedialog_ok_callback(GtkWidget *widget, wxFileDialog *dialog)
  37 {
  38     int style = dialog->GetWindowStyle();
  39     wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
  40
  41     // gtk version numbers must be identical with the one in ctor (that calls set_do_overwrite_confirmation)
  42 #if GTK_CHECK_VERSION(2,7,3)
  43     if(gtk_check_version(2,7,3) != NULL)
  44 #endif
  45     if ((style & wxFD_SAVE) && (style & wxFD_OVERWRITE_PROMPT))
  46     {
  47         if ( g_file_test(filename, G_FILE_TEST_EXISTS) )
  48         {
  49             wxString msg;
  50
  51             msg.Printf(
  52                 _("File '%s' already exists, do you really want to overwrite it?"),
  53                 wxString(filename, *wxConvFileName));
  54
  55             wxMessageDialog dlg(dialog, msg, _("Confirm"),
  56                                wxYES_NO | wxICON_QUESTION);
  57             if (dlg.ShowModal() != wxID_YES)
  58                 return;
  59         }
  60     }
  61
  62     if (style & wxFD_FILE_MUST_EXIST)
  63     {
  64         if ( !g_file_test(filename, G_FILE_TEST_EXISTS) )
  65         {
  66             wxMessageDialog dlg( dialog, _("Please choose an existing file."),
  67                                  _("Error"), wxOK| wxICON_ERROR);
  68             dlg.ShowModal();
  69             return;
  70         }
  71     }
  72
  73     // change to the directory where the user went if asked
  74     if (style & wxFD_CHANGE_DIR)
  75     {
  76         // Use chdir to not care about filename encodings
  77         wxGtkString folder(g_path_get_dirname(filename));
  78         chdir(folder);
  79     }
  80
  81     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK);
  82     event.SetEventObject(dialog);
  83     dialog->HandleWindowEvent(event);
  84 }
  85 }
  86
  87 //-----------------------------------------------------------------------------
  88 // "clicked" for Cancel-button
  89 //-----------------------------------------------------------------------------
  90
  91 extern "C"
  92 {
  93
  94 static void
  95 gtk_filedialog_cancel_callback(GtkWidget * WXUNUSED(w), wxFileDialog *dialog)
  96 {
  97     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
  98     event.SetEventObject(dialog);
  99     dialog->HandleWindowEvent(event);
 100 }
 101
 102 static void gtk_filedialog_response_callback(GtkWidget *w,
 103                                              gint response,
 104                                              wxFileDialog *dialog)
 105 {
 106     if (response == GTK_RESPONSE_ACCEPT)
 107         gtk_filedialog_ok_callback(w, dialog);
 108     else    // GTK_RESPONSE_CANCEL or GTK_RESPONSE_NONE
 109         gtk_filedialog_cancel_callback(w, dialog);
 110 }
 111
 112 static void gtk_filedialog_update_preview_callback(GtkFileChooser *chooser,
 113                                                    gpointer user_data)
 114 {
 115     GtkWidget *preview = GTK_WIDGET(user_data);
 116
 117     wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
 118
 119     if ( !filename )
 120         return;
 121
 122     GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
 123     gboolean have_preview = pixbuf != NULL;
 124
 125     gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
 126     if ( pixbuf )
 127         g_object_unref (pixbuf);
 128
 129     gtk_file_chooser_set_preview_widget_active(chooser, have_preview);
 130 }
 131
 132 } // extern "C"
 133
 134 //-----------------------------------------------------------------------------
 135 // "size_request" from m_extraControl
 136 //-----------------------------------------------------------------------------
 137
 138 extern "C" {
 139 static void extra_widget_size_request(GtkWidget*, GtkRequisition* req, wxWindow* win)
 140 {
 141     // allow dialog to be resized smaller horizontally
 142     req->width = win->GetMinWidth();
 143 }
 144 }
 145
 146 static void wxInsertChildInFileDialog(wxWindow* parent, wxWindow* child)
 147 {
 148     g_signal_connect_after(child->m_widget, "size_request",
 149         G_CALLBACK(extra_widget_size_request), child);
 150     gtk_file_chooser_set_extra_widget(
 151         GTK_FILE_CHOOSER(parent->m_widget), child->m_widget);
 152 }
 153
 154 //-----------------------------------------------------------------------------
 155 // wxFileDialog
 156 //-----------------------------------------------------------------------------
 157
 158 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxFileDialogBase)
 159
 160 BEGIN_EVENT_TABLE(wxFileDialog,wxFileDialogBase)
 161     EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
 162     EVT_SIZE(wxFileDialog::OnSize)
 163 END_EVENT_TABLE()
 164
 165 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 166                            const wxString& defaultDir,
 167                            const wxString& defaultFileName,
 168                            const wxString& wildCard,
 169                            long style, const wxPoint& pos,
 170                            const wxSize& sz,
 171                            const wxString& name)
 172     : wxFileDialogBase()
 173 {
 174     m_insertCallback = wxInsertChildInFileDialog;
 175     parent = GetParentForModalDialog(parent);
 176
 177     if (!wxFileDialogBase::Create(parent, message, defaultDir, defaultFileName,
 178                                   wildCard, style, pos, sz, name))
 179     {
 180         return;
 181     }
 182
 183     if (!PreCreation(parent, pos, wxDefaultSize) ||
 184         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 185                 wxDefaultValidator, wxT("filedialog")))
 186     {
 187         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 188         return;
 189     }
 190
 191     GtkFileChooserAction gtk_action;
 192     GtkWindow* gtk_parent = NULL;
 193     if (parent)
 194         gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
 195
 196     const gchar* ok_btn_stock;
 197     if ( style & wxFD_SAVE )
 198     {
 199         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 200         ok_btn_stock = GTK_STOCK_SAVE;
 201     }
 202     else
 203     {
 204         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 205         ok_btn_stock = GTK_STOCK_OPEN;
 206     }
 207
 208     m_widget = gtk_file_chooser_dialog_new(
 209                    wxGTK_CONV(m_message),
 210                    gtk_parent,
 211                    gtk_action,
 212                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 213                    ok_btn_stock, GTK_RESPONSE_ACCEPT,
 214                    NULL);
 215
 216     m_fc.SetWidget( GTK_FILE_CHOOSER(m_widget) );
 217
 218     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
 219
 220     if ( style & wxFD_MULTIPLE )
 221         gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), true);
 222
 223     // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically
 224     // destroys the dialog when the user press ESC on the dialog: in that case
 225     // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
 226     // errors...
 227     g_signal_connect (G_OBJECT(m_widget),
 228                     "delete_event",
 229                     G_CALLBACK (gtk_widget_hide_on_delete),
 230                     (gpointer)this);
 231
 232     // local-only property could be set to false to allow non-local files to be
 233     // loaded. In that case get/set_uri(s) should be used instead of
 234     // get/set_filename(s) everywhere and the GtkFileChooserDialog should
 235     // probably also be created with a backend, e.g "gnome-vfs", "default", ...
 236     // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
 237     // as the default - true:
 238     // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
 239
 240     g_signal_connect (m_widget, "response",
 241         G_CALLBACK (gtk_filedialog_response_callback), this);
 242
 243     SetWildcard(wildCard);
 244
 245     // if defaultDir is specified it should contain the directory and
 246     // defaultFileName should contain the default name of the file, however if
 247     // directory is not given, defaultFileName contains both
 248     wxFileName fn;
 249     if ( defaultDir.empty() )
 250         fn.Assign(defaultFileName);
 251     else if ( !defaultFileName.empty() )
 252         fn.Assign(defaultDir, defaultFileName);
 253     else
 254         fn.AssignDir(defaultDir);
 255
 256     // set the initial file name and/or directory
 257     fn.MakeAbsolute(); // GTK+ needs absolute path
 258     const wxString dir = fn.GetPath();
 259     if ( !dir.empty() )
 260     {
 261         gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 262                                             dir.fn_str());
 263     }
 264
 265     const wxString fname = fn.GetFullName();
 266     if ( style & wxFD_SAVE )
 267     {
 268         if ( !fname.empty() )
 269         {
 270             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 271                                               fname.fn_str());
 272         }
 273
 274 #if GTK_CHECK_VERSION(2,7,3)
 275         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 276             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 277 #endif
 278     }
 279     else // wxFD_OPEN
 280     {
 281         if ( !fname.empty() )
 282         {
 283             gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 284                                           fn.GetFullPath().fn_str());
 285         }
 286     }
 287
 288     if ( style & wxFD_PREVIEW )
 289     {
 290         GtkWidget *previewImage = gtk_image_new();
 291
 292         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 293                                             previewImage);
 294         g_signal_connect(m_widget, "update-preview",
 295                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 296                          previewImage);
 297     }
 298 }
 299
 300
 301 void wxFileDialog::OnFakeOk(wxCommandEvent& WXUNUSED(event))
 302 {
 303     EndDialog(wxID_OK);
 304 }
 305
 306 int wxFileDialog::ShowModal()
 307 {
 308     CreateExtraControl();
 309
 310     return wxDialog::ShowModal();
 311 }
 312
 313 void wxFileDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
 314                              int WXUNUSED(width), int WXUNUSED(height),
 315                              int WXUNUSED(sizeFlags))
 316 {
 317 }
 318
 319 void wxFileDialog::OnSize(wxSizeEvent&)
 320 {
 321     // avoid calling DoLayout(), which will set the (wrong) size of
 322     // m_extraControl, its size is managed by GtkFileChooser
 323 }
 324
 325 wxString wxFileDialog::GetPath() const
 326 {
 327     return m_fc.GetPath();
 328 }
 329
 330 void wxFileDialog::GetFilenames(wxArrayString& files) const
 331 {
 332     m_fc.GetFilenames( files );
 333 }
 334
 335 void wxFileDialog::GetPaths(wxArrayString& paths) const
 336 {
 337     m_fc.GetPaths( paths );
 338 }
 339
 340 void wxFileDialog::SetMessage(const wxString& message)
 341 {
 342     m_message = message;
 343     SetTitle(message);
 344 }
 345
 346 void wxFileDialog::SetPath(const wxString& path)
 347 {
 348     m_fc.SetPath( path );
 349 }
 350
 351 void wxFileDialog::SetDirectory(const wxString& dir)
 352 {
 353     m_fc.SetDirectory( dir );
 354 }
 355
 356 wxString wxFileDialog::GetDirectory() const
 357 {
 358     return m_fc.GetDirectory();
 359 }
 360
 361 void wxFileDialog::SetFilename(const wxString& name)
 362 {
 363     if (HasFdFlag(wxFD_SAVE))
 364         gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 365     else
 366         SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 367 }
 368
 369 wxString wxFileDialog::GetFilename() const
 370 {
 371     return m_fc.GetFilename();
 372 }
 373
 374 void wxFileDialog::SetWildcard(const wxString& wildCard)
 375 {
 376     m_fc.SetWildcard( wildCard );
 377 }
 378
 379 void wxFileDialog::SetFilterIndex(int filterIndex)
 380 {
 381
 382     m_fc.SetFilterIndex( filterIndex);
 383 }
 384
 385 int wxFileDialog::GetFilterIndex() const
 386 {
 387     return m_fc.GetFilterIndex();
 388 }
 389
 390 #endif // wxUSE_FILEDLG