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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 {
46 if ((style & wxFD_SAVE) && (style & wxFD_OVERWRITE_PROMPT))
47 {
48 if ( g_file_test(filename, G_FILE_TEST_EXISTS) )
49 {
50 wxString msg;
51
52 msg.Printf(
53 _("File '%s' already exists, do you really want to overwrite it?"),
54 wxString::FromUTF8(filename));
55
56 wxMessageDialog dlg(dialog, msg, _("Confirm"),
57 wxYES_NO | wxICON_QUESTION);
58 if (dlg.ShowModal() != wxID_YES)
59 return;
60 }
61 }
62 }
63
64 if (style & wxFD_FILE_MUST_EXIST)
65 {
66 if ( !g_file_test(filename, G_FILE_TEST_EXISTS) )
67 {
68 wxMessageDialog dlg( dialog, _("Please choose an existing file."),
69 _("Error"), wxOK| wxICON_ERROR);
70 dlg.ShowModal();
71 return;
72 }
73 }
74
75 // change to the directory where the user went if asked
76 if (style & wxFD_CHANGE_DIR)
77 {
78 // Use chdir to not care about filename encodings
79 wxGtkString folder(g_path_get_dirname(filename));
80 chdir(folder);
81 }
82
83 wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK);
84 event.SetEventObject(dialog);
85 dialog->HandleWindowEvent(event);
86 }
87 }
88
89 //-----------------------------------------------------------------------------
90 // "clicked" for Cancel-button
91 //-----------------------------------------------------------------------------
92
93 extern "C"
94 {
95
96 static void
97 gtk_filedialog_cancel_callback(GtkWidget * WXUNUSED(w), wxFileDialog *dialog)
98 {
99 wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
100 event.SetEventObject(dialog);
101 dialog->HandleWindowEvent(event);
102 }
103
104 static void gtk_filedialog_response_callback(GtkWidget *w,
105 gint response,
106 wxFileDialog *dialog)
107 {
108 if (response == GTK_RESPONSE_ACCEPT)
109 gtk_filedialog_ok_callback(w, dialog);
110 else // GTK_RESPONSE_CANCEL or GTK_RESPONSE_NONE
111 gtk_filedialog_cancel_callback(w, dialog);
112 }
113
114 static void gtk_filedialog_update_preview_callback(GtkFileChooser *chooser,
115 gpointer user_data)
116 {
117 GtkWidget *preview = GTK_WIDGET(user_data);
118
119 wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
120
121 if ( !filename )
122 return;
123
124 GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
125 gboolean have_preview = pixbuf != NULL;
126
127 gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
128 if ( pixbuf )
129 g_object_unref (pixbuf);
130
131 gtk_file_chooser_set_preview_widget_active(chooser, have_preview);
132 }
133
134 } // extern "C"
135
136 //-----------------------------------------------------------------------------
137 // "size_request" from m_extraControl
138 //-----------------------------------------------------------------------------
139
140 extern "C" {
141 static void extra_widget_size_request(GtkWidget*, GtkRequisition* req, wxWindow* win)
142 {
143 // allow dialog to be resized smaller horizontally
144 req->width = win->GetMinWidth();
145 }
146 }
147
148 void wxFileDialog::AddChildGTK(wxWindowGTK* child)
149 {
150 g_signal_connect_after(child->m_widget, "size_request",
151 G_CALLBACK(extra_widget_size_request), child);
152 gtk_file_chooser_set_extra_widget(
153 GTK_FILE_CHOOSER(m_widget), child->m_widget);
154 }
155
156 //-----------------------------------------------------------------------------
157 // wxFileDialog
158 //-----------------------------------------------------------------------------
159
160 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxFileDialogBase)
161
162 BEGIN_EVENT_TABLE(wxFileDialog,wxFileDialogBase)
163 EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
164 EVT_SIZE(wxFileDialog::OnSize)
165 END_EVENT_TABLE()
166
167 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
168 const wxString& defaultDir,
169 const wxString& defaultFileName,
170 const wxString& wildCard,
171 long style, const wxPoint& pos,
172 const wxSize& sz,
173 const wxString& name)
174 : wxFileDialogBase()
175 {
176 parent = GetParentForModalDialog(parent, style);
177
178 if (!wxFileDialogBase::Create(parent, message, defaultDir, defaultFileName,
179 wildCard, style, pos, sz, name))
180 {
181 return;
182 }
183
184 if (!PreCreation(parent, pos, wxDefaultSize) ||
185 !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
186 wxDefaultValidator, wxT("filedialog")))
187 {
188 wxFAIL_MSG( wxT("wxFileDialog creation failed") );
189 return;
190 }
191
192 GtkFileChooserAction gtk_action;
193 GtkWindow* gtk_parent = NULL;
194 if (parent)
195 gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
196
197 const gchar* ok_btn_stock;
198 if ( style & wxFD_SAVE )
199 {
200 gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
201 ok_btn_stock = GTK_STOCK_SAVE;
202 }
203 else
204 {
205 gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
206 ok_btn_stock = GTK_STOCK_OPEN;
207 }
208
209 m_widget = gtk_file_chooser_dialog_new(
210 wxGTK_CONV(m_message),
211 gtk_parent,
212 gtk_action,
213 GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
214 ok_btn_stock, GTK_RESPONSE_ACCEPT,
215 NULL);
216 g_object_ref(m_widget);
217 GtkFileChooser* file_chooser = GTK_FILE_CHOOSER(m_widget);
218
219 m_fc.SetWidget(file_chooser);
220
221 gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
222
223 if ( style & wxFD_MULTIPLE )
224 gtk_file_chooser_set_select_multiple(file_chooser, true);
225
226 // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically
227 // destroys the dialog when the user press ESC on the dialog: in that case
228 // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
229 // errors...
230 g_signal_connect(m_widget,
231 "delete_event",
232 G_CALLBACK (gtk_widget_hide_on_delete),
233 this);
234
235 // local-only property could be set to false to allow non-local files to be
236 // loaded. In that case get/set_uri(s) should be used instead of
237 // get/set_filename(s) everywhere and the GtkFileChooserDialog should
238 // probably also be created with a backend, e.g "gnome-vfs", "default", ...
239 // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
240 // as the default - true:
241 // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
242
243 g_signal_connect (m_widget, "response",
244 G_CALLBACK (gtk_filedialog_response_callback), this);
245
246
247 // deal with extensions/filters
248 SetWildcard(wildCard);
249
250 wxString defaultFileNameWithExt = defaultFileName;
251 if ( !wildCard.empty() && !defaultFileName.empty() &&
252 !wxFileName(defaultFileName).HasExt() )
253 {
254 // append the default extension to the initial file name: GTK won't do
255 // it for us by default (unlike e.g. MSW)
256 const wxString defaultExt = m_fc.GetCurrentWildCard().AfterFirst('.');
257 if ( defaultExt.find_first_of("?*") == wxString::npos )
258 defaultFileNameWithExt += "." + defaultExt;
259 }
260
261
262 // if defaultDir is specified it should contain the directory and
263 // defaultFileName should contain the default name of the file, however if
264 // directory is not given, defaultFileName contains both
265 wxFileName fn;
266 if ( defaultDir.empty() )
267 fn.Assign(defaultFileNameWithExt);
268 else if ( !defaultFileNameWithExt.empty() )
269 fn.Assign(defaultDir, defaultFileNameWithExt);
270 else
271 fn.AssignDir(defaultDir);
272
273 // set the initial file name and/or directory
274 fn.MakeAbsolute(); // GTK+ needs absolute path
275 const wxString dir = fn.GetPath();
276 if ( !dir.empty() )
277 {
278 gtk_file_chooser_set_current_folder(file_chooser, dir.fn_str());
279 }
280
281 const wxString fname = fn.GetFullName();
282 if ( style & wxFD_SAVE )
283 {
284 if ( !fname.empty() )
285 {
286 gtk_file_chooser_set_current_name(file_chooser, fname.fn_str());
287 }
288
289 #if GTK_CHECK_VERSION(2,7,3)
290 if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
291 gtk_file_chooser_set_do_overwrite_confirmation(file_chooser, true);
292 #endif
293 }
294 else // wxFD_OPEN
295 {
296 if ( !fname.empty() )
297 {
298 gtk_file_chooser_set_filename(file_chooser,
299 fn.GetFullPath().fn_str());
300 }
301 }
302
303 if ( style & wxFD_PREVIEW )
304 {
305 GtkWidget *previewImage = gtk_image_new();
306
307 gtk_file_chooser_set_preview_widget(file_chooser, previewImage);
308 g_signal_connect(m_widget, "update-preview",
309 G_CALLBACK(gtk_filedialog_update_preview_callback),
310 previewImage);
311 }
312 }
313
314 wxFileDialog::~wxFileDialog()
315 {
316 if (m_extraControl)
317 {
318 // get chooser to drop its reference right now, allowing wxWindow dtor
319 // to verify that ref count drops to zero
320 gtk_file_chooser_set_extra_widget(
321 GTK_FILE_CHOOSER(m_widget), NULL);
322 }
323 }
324
325 void wxFileDialog::OnFakeOk(wxCommandEvent& WXUNUSED(event))
326 {
327 EndDialog(wxID_OK);
328 }
329
330 int wxFileDialog::ShowModal()
331 {
332 CreateExtraControl();
333
334 return wxDialog::ShowModal();
335 }
336
337 void wxFileDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
338 int WXUNUSED(width), int WXUNUSED(height),
339 int WXUNUSED(sizeFlags))
340 {
341 }
342
343 void wxFileDialog::OnSize(wxSizeEvent&)
344 {
345 // avoid calling DoLayout(), which will set the (wrong) size of
346 // m_extraControl, its size is managed by GtkFileChooser
347 }
348
349 wxString wxFileDialog::GetPath() const
350 {
351 return m_fc.GetPath();
352 }
353
354 void wxFileDialog::GetFilenames(wxArrayString& files) const
355 {
356 m_fc.GetFilenames( files );
357 }
358
359 void wxFileDialog::GetPaths(wxArrayString& paths) const
360 {
361 m_fc.GetPaths( paths );
362 }
363
364 void wxFileDialog::SetMessage(const wxString& message)
365 {
366 m_message = message;
367 SetTitle(message);
368 }
369
370 void wxFileDialog::SetPath(const wxString& path)
371 {
372 // we need an absolute path for GTK native chooser so ensure that we have
373 // it
374 wxFileName fn(path);
375 fn.MakeAbsolute();
376 m_fc.SetPath(fn.GetFullPath());
377 }
378
379 void wxFileDialog::SetDirectory(const wxString& dir)
380 {
381 if (m_fc.SetDirectory( dir ))
382 {
383 // Cache the dir, as gtk_file_chooser_get_current_folder()
384 // doesn't return anything until the dialog has been shown
385 m_dir = dir;
386 }
387 }
388
389 wxString wxFileDialog::GetDirectory() const
390 {
391 wxString currentDir( m_fc.GetDirectory() );
392 if (currentDir.empty())
393 {
394 // m_fc.GetDirectory() will return empty until the dialog has been shown
395 // in which case use any previously provided value
396 currentDir = m_dir;
397 }
398 return currentDir;
399 }
400
401 void wxFileDialog::SetFilename(const wxString& name)
402 {
403 if (HasFdFlag(wxFD_SAVE))
404 {
405 gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
406 m_fileName = name;
407 }
408
409 else
410 {
411 wxString path( GetDirectory() );
412 if (path.empty())
413 {
414 // SetPath() fires an assert if fed other than filepaths
415 return;
416 }
417 SetPath(wxFileName(path, name).GetFullPath());
418 m_fileName = name;
419 }
420 }
421
422 wxString wxFileDialog::GetFilename() const
423 {
424 wxString currentFilename( m_fc.GetFilename() );
425 if (currentFilename.empty())
426 {
427 // m_fc.GetFilename() will return empty until the dialog has been shown
428 // in which case use any previously provided value
429 currentFilename = m_fileName;
430 }
431 return currentFilename;
432 }
433
434 void wxFileDialog::SetWildcard(const wxString& wildCard)
435 {
436 m_fc.SetWildcard( wildCard );
437 }
438
439 void wxFileDialog::SetFilterIndex(int filterIndex)
440 {
441
442 m_fc.SetFilterIndex( filterIndex);
443 }
444
445 int wxFileDialog::GetFilterIndex() const
446 {
447 return m_fc.GetFilterIndex();
448 }
449
450 #endif // wxUSE_FILEDLG