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, void*)
 140 {
 141     // allow dialog to be resized smaller horizontally
 142     req->width = 1;
 143 }
 144 }
 145
 146 static void wxInsertChildInFileDialog(wxWindow* WXUNUSED(parent),
 147                                       wxWindow* WXUNUSED(child))
 148 {
 149 }
 150
 151
 152 //-----------------------------------------------------------------------------
 153 // wxFileDialog
 154 //-----------------------------------------------------------------------------
 155
 156 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxFileDialogBase)
 157
 158 BEGIN_EVENT_TABLE(wxFileDialog,wxFileDialogBase)
 159     EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
 160     EVT_SIZE(wxFileDialog::OnSize)
 161 END_EVENT_TABLE()
 162
 163 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 164                            const wxString& defaultDir,
 165                            const wxString& defaultFileName,
 166                            const wxString& wildCard,
 167                            long style, const wxPoint& pos,
 168                            const wxSize& sz,
 169                            const wxString& name)
 170     : wxFileDialogBase()
 171 {
 172     m_insertCallback = wxInsertChildInFileDialog;
 173     parent = GetParentForModalDialog(parent);
 174
 175     if (!wxFileDialogBase::Create(parent, message, defaultDir, defaultFileName,
 176                                   wildCard, style, pos, sz, name))
 177     {
 178         return;
 179     }
 180
 181     if (!PreCreation(parent, pos, wxDefaultSize) ||
 182         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 183                 wxDefaultValidator, wxT("filedialog")))
 184     {
 185         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 186         return;
 187     }
 188
 189     GtkFileChooserAction gtk_action;
 190     GtkWindow* gtk_parent = NULL;
 191     if (parent)
 192         gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
 193
 194     const gchar* ok_btn_stock;
 195     if ( style & wxFD_SAVE )
 196     {
 197         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 198         ok_btn_stock = GTK_STOCK_SAVE;
 199     }
 200     else
 201     {
 202         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 203         ok_btn_stock = GTK_STOCK_OPEN;
 204     }
 205
 206     m_widget = gtk_file_chooser_dialog_new(
 207                    wxGTK_CONV(m_message),
 208                    gtk_parent,
 209                    gtk_action,
 210                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 211                    ok_btn_stock, GTK_RESPONSE_ACCEPT,
 212                    NULL);
 213
 214     m_fc.SetWidget( GTK_FILE_CHOOSER(m_widget) );
 215
 216     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
 217
 218     if ( style & wxFD_MULTIPLE )
 219         gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), true);
 220
 221     // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically
 222     // destroys the dialog when the user press ESC on the dialog: in that case
 223     // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
 224     // errors...
 225     g_signal_connect (G_OBJECT(m_widget),
 226                     "delete_event",
 227                     G_CALLBACK (gtk_widget_hide_on_delete),
 228                     (gpointer)this);
 229
 230     // local-only property could be set to false to allow non-local files to be
 231     // loaded. In that case get/set_uri(s) should be used instead of
 232     // get/set_filename(s) everywhere and the GtkFileChooserDialog should
 233     // probably also be created with a backend, e.g "gnome-vfs", "default", ...
 234     // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
 235     // as the default - true:
 236     // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
 237
 238     g_signal_connect (m_widget, "response",
 239         G_CALLBACK (gtk_filedialog_response_callback), this);
 240
 241     SetWildcard(wildCard);
 242
 243     // if defaultDir is specified it should contain the directory and
 244     // defaultFileName should contain the default name of the file, however if
 245     // directory is not given, defaultFileName contains both
 246     wxFileName fn;
 247     if ( defaultDir.empty() )
 248         fn.Assign(defaultFileName);
 249     else if ( !defaultFileName.empty() )
 250         fn.Assign(defaultDir, defaultFileName);
 251     else
 252         fn.AssignDir(defaultDir);
 253
 254     // set the initial file name and/or directory
 255     fn.MakeAbsolute(); // GTK+ needs absolute path
 256     const wxString dir = fn.GetPath();
 257     if ( !dir.empty() )
 258     {
 259         gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 260                                             dir.fn_str());
 261     }
 262
 263     const wxString fname = fn.GetFullName();
 264     if ( style & wxFD_SAVE )
 265     {
 266         if ( !fname.empty() )
 267         {
 268             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 269                                               fname.fn_str());
 270         }
 271
 272 #if GTK_CHECK_VERSION(2,7,3)
 273         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 274             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 275 #endif
 276     }
 277     else // wxFD_OPEN
 278     {
 279         if ( !fname.empty() )
 280         {
 281             gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 282                                           fn.GetFullPath().fn_str());
 283         }
 284     }
 285
 286     if ( style & wxFD_PREVIEW )
 287     {
 288         GtkWidget *previewImage = gtk_image_new();
 289
 290         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 291                                             previewImage);
 292         g_signal_connect(m_widget, "update-preview",
 293                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 294                          previewImage);
 295     }
 296 }
 297
 298
 299 void wxFileDialog::OnFakeOk(wxCommandEvent& WXUNUSED(event))
 300 {
 301     EndDialog(wxID_OK);
 302 }
 303
 304 int wxFileDialog::ShowModal()
 305 {
 306     if (CreateExtraControl())
 307     {
 308         GtkWidget *control = m_extraControl->m_widget;
 309
 310         wxASSERT(control->parent == NULL);
 311
 312         gtk_widget_show(control);
 313         g_signal_connect_after(control, "size_request",
 314             G_CALLBACK(extra_widget_size_request), NULL);
 315         gtk_file_chooser_set_extra_widget(GTK_FILE_CHOOSER(m_widget), control);
 316     }
 317
 318     return wxDialog::ShowModal();
 319 }
 320
 321 void wxFileDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
 322                              int WXUNUSED(width), int WXUNUSED(height),
 323                              int WXUNUSED(sizeFlags))
 324 {
 325 }
 326
 327 void wxFileDialog::OnSize(wxSizeEvent&)
 328 {
 329     // avoid calling DoLayout(), which will set the (wrong) size of
 330     // m_extraControl, its size is managed by GtkFileChooser
 331 }
 332
 333 wxString wxFileDialog::GetPath() const
 334 {
 335     return m_fc.GetPath();
 336 }
 337
 338 void wxFileDialog::GetFilenames(wxArrayString& files) const
 339 {
 340     m_fc.GetFilenames( files );
 341 }
 342
 343 void wxFileDialog::GetPaths(wxArrayString& paths) const
 344 {
 345     m_fc.GetPaths( paths );
 346 }
 347
 348 void wxFileDialog::SetMessage(const wxString& message)
 349 {
 350     m_message = message;
 351     SetTitle(message);
 352 }
 353
 354 void wxFileDialog::SetPath(const wxString& path)
 355 {
 356     m_fc.SetPath( path );
 357 }
 358
 359 void wxFileDialog::SetDirectory(const wxString& dir)
 360 {
 361     m_fc.SetDirectory( dir );
 362 }
 363
 364 wxString wxFileDialog::GetDirectory() const
 365 {
 366     return m_fc.GetDirectory();
 367 }
 368
 369 void wxFileDialog::SetFilename(const wxString& name)
 370 {
 371     if (HasFdFlag(wxFD_SAVE))
 372         gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 373     else
 374         SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 375 }
 376
 377 wxString wxFileDialog::GetFilename() const
 378 {
 379     return m_fc.GetFilename();
 380 }
 381
 382 void wxFileDialog::SetWildcard(const wxString& wildCard)
 383 {
 384     m_fc.SetWildcard( wildCard );
 385 }
 386
 387 void wxFileDialog::SetFilterIndex(int filterIndex)
 388 {
 389
 390     m_fc.SetFilterIndex( filterIndex);
 391 }
 392
 393 int wxFileDialog::GetFilterIndex() const
 394 {
 395     return m_fc.GetFilterIndex();
 396 }
 397
 398 #endif // wxUSE_FILEDLG