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
  21
  22 #include "wx/filepicker.h"
  23 #include "wx/tooltip.h"
  24
  25 #include <gtk/gtk.h>
  26 #include "wx/gtk/private.h"
  27
  28 // ============================================================================
  29 // implementation
  30 // ============================================================================
  31
  32 //-----------------------------------------------------------------------------
  33 // wxFileButton
  34 //-----------------------------------------------------------------------------
  35
  36 IMPLEMENT_DYNAMIC_CLASS(wxFileButton, wxButton)
  37
  38 bool wxFileButton::Create( wxWindow *parent, wxWindowID id,
  39                         const wxString &label, const wxString &path,
  40                         const wxString &message, const wxString &wildcard,
  41                         const wxPoint &pos, const wxSize &size,
  42                         long style, const wxValidator& validator,
  43                         const wxString &name )
  44 {
  45     // we can't use the native button for wxFLP_SAVE pickers as it can only
  46     // open existing files and there is no way to create a new file using it
  47     if (!(style & wxFLP_SAVE) && !(style & wxFLP_USE_TEXTCTRL))
  48     {
  49         // VERY IMPORTANT: this code is identical to relative code in wxDirButton;
  50         //                 if you find a problem here, fix it also in wxDirButton !
  51
  52         if (!PreCreation( parent, pos, size ) ||
  53             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
  54                                     validator, name))
  55         {
  56             wxFAIL_MSG( wxT("wxFileButton creation failed") );
  57             return false;
  58         }
  59
  60         // create the dialog associated with this button
  61         // NB: unlike generic implementation, native GTK implementation needs to create
  62         //     the filedialog here as it needs to use gtk_file_chooser_button_new_with_dialog()
  63         SetWindowStyle(style);
  64         m_path = path;
  65         m_message = message;
  66         m_wildcard = wildcard;
  67         if ((m_dialog = CreateDialog()) == NULL)
  68             return false;
  69
  70         // little trick used to avoid problems when there are other GTK windows 'grabbed':
  71         // GtkFileChooserDialog won't be responsive to user events if there is another
  72         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
  73         // in modal mode in the application - see wxDialogGTK::ShowModal).
  74         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
  75         // is clicked and then remove it as soon as the user closes the dialog itself.
  76         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
  77         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
  78         // hidden simply using its "show" and "hide" events - clean & simple :)
  79         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
  80         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
  81
  82         //       use as label the currently selected file
  83         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
  84         g_object_ref(m_widget);
  85
  86         // we need to know when the dialog has been dismissed clicking OK...
  87         // NOTE: the "clicked" signal is not available for a GtkFileChooserButton
  88         //       thus we are forced to use wxFileDialog's event
  89         m_dialog->Connect(wxEVT_BUTTON,
  90                 wxCommandEventHandler(wxFileButton::OnDialogOK),
  91                 NULL, this);
  92
  93         m_parent->DoAddChild( this );
  94
  95         PostCreation(size);
  96         SetInitialSize(size);
  97     }
  98     else
  99         return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
 100                                            pos, size, style, validator, name);
 101     return true;
 102 }
 103
 104 wxFileButton::~wxFileButton()
 105 {
 106 }
 107
 108 void wxFileButton::OnDialogOK(wxCommandEvent& ev)
 109 {
 110     // the wxFileDialog associated with the GtkFileChooserButton has been closed
 111     // using the OK button, thus the selected file has changed...
 112     if (ev.GetId() == wxID_OK)
 113     {
 114         // ...update our path
 115         UpdatePathFromDialog(m_dialog);
 116
 117         // ...and fire an event
 118         wxFileDirPickerEvent event(wxEVT_FILEPICKER_CHANGED, this, GetId(), m_path);
 119         HandleWindowEvent(event);
 120     }
 121 }
 122
 123 void wxFileButton::SetPath(const wxString &str)
 124 {
 125     m_path = str;
 126
 127     if (m_dialog)
 128         UpdateDialogPath(m_dialog);
 129 }
 130
 131 void wxFileButton::SetInitialDirectory(const wxString& dir)
 132 {
 133     if (m_dialog)
 134     {
 135         // Only change the directory if the default file name doesn't have any
 136         // directory in it, otherwise it takes precedence.
 137         if ( m_path.find_first_of(wxFileName::GetPathSeparators()) ==
 138                 wxString::npos )
 139         {
 140             static_cast<wxFileDialog*>(m_dialog)->SetDirectory(dir);
 141         }
 142     }
 143     else
 144         wxGenericFileButton::SetInitialDirectory(dir);
 145 }
 146
 147 #endif // wxUSE_FILEPICKERCTRL
 148
 149 #if wxUSE_DIRPICKERCTRL
 150
 151 #ifdef __UNIX__
 152 #include <unistd.h> // chdir
 153 #endif
 154
 155 //-----------------------------------------------------------------------------
 156 // "current-folder-changed"
 157 //-----------------------------------------------------------------------------
 158
 159 extern "C" {
 160 static void gtk_dirbutton_currentfolderchanged_callback(GtkFileChooserButton *widget,
 161                                                         wxDirButton *p)
 162 {
 163     // update the m_path member of the wxDirButtonGTK
 164     // unless the path was changed by wxDirButton::SetPath()
 165     if (p->m_bIgnoreNextChange)
 166     {
 167         p->m_bIgnoreNextChange=false;
 168         return;
 169     }
 170     wxASSERT(p);
 171
 172     // NB: it's important to use gtk_file_chooser_get_filename instead of
 173     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 174     wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
 175     p->GTKUpdatePath(filename);
 176
 177     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 178     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 179     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 180     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 181     // style was given.
 182     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 183         chdir(filename);
 184
 185     // ...and fire an event
 186     wxFileDirPickerEvent event(wxEVT_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 187     p->HandleWindowEvent(event);
 188 }
 189 }
 190
 191
 192 //-----------------------------------------------------------------------------
 193 // wxDirButtonGTK
 194 //-----------------------------------------------------------------------------
 195
 196 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 197
 198 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 199                         const wxString &label, const wxString &path,
 200                         const wxString &message, const wxString &wildcard,
 201                         const wxPoint &pos, const wxSize &size,
 202                         long style, const wxValidator& validator,
 203                         const wxString &name )
 204 {
 205     if (!(style & wxDIRP_USE_TEXTCTRL))
 206     {
 207         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 208         //                 if you find a problem here, fix it also in wxFileButton !
 209
 210         if (!PreCreation( parent, pos, size ) ||
 211             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 212                                     validator, name))
 213         {
 214             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 215             return false;
 216         }
 217
 218         // create the dialog associated with this button
 219         SetWindowStyle(style);
 220         m_message = message;
 221         m_wildcard = wildcard;
 222         if ((m_dialog = CreateDialog()) == NULL)
 223             return false;
 224         SetPath(path);
 225
 226         // little trick used to avoid problems when there are other GTK windows 'grabbed':
 227         // GtkFileChooserDialog won't be responsive to user events if there is another
 228         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
 229         // in modal mode in the application - see wxDialogGTK::ShowModal).
 230         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
 231         // is clicked and then remove it as soon as the user closes the dialog itself.
 232         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
 233         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
 234         // hidden simply using its "show" and "hide" events - clean & simple :)
 235         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
 236         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
 237
 238
 239         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
 240         //       use as label the currently selected file
 241         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
 242         g_object_ref(m_widget);
 243
 244         // GtkFileChooserButton signals
 245         g_signal_connect(m_widget, "current-folder-changed",
 246                          G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
 247
 248         m_parent->DoAddChild( this );
 249
 250         PostCreation(size);
 251         SetInitialSize(size);
 252     }
 253     else
 254         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
 255                                           pos, size, style, validator, name);
 256     return true;
 257 }
 258
 259 wxDirButton::~wxDirButton()
 260 {
 261 }
 262
 263 void wxDirButton::GTKUpdatePath(const char *gtkpath)
 264 {
 265     m_path = wxString::FromUTF8(gtkpath);
 266 }
 267 void wxDirButton::SetPath(const wxString& str)
 268 {
 269     if ( m_path == str )
 270     {
 271         // don't do anything and especially don't set m_bIgnoreNextChange
 272         return;
 273     }
 274
 275     m_path = str;
 276
 277     // wxDirButton uses the "current-folder-changed" signal which is triggered also
 278     // when we set the path on the dialog associated with this button; thus we need
 279     // to set the following flag to avoid sending a wxFileDirPickerEvent from this
 280     // function (which would be inconsistent with wxFileButton's behaviour and in
 281     // general with all wxWidgets control-manipulation functions which do not send events).
 282     m_bIgnoreNextChange = true;
 283
 284     if (m_dialog)
 285         UpdateDialogPath(m_dialog);
 286 }
 287
 288 void wxDirButton::SetInitialDirectory(const wxString& dir)
 289 {
 290     if (m_dialog)
 291     {
 292         if (m_path.empty())
 293             static_cast<wxDirDialog*>(m_dialog)->SetPath(dir);
 294     }
 295     else
 296         wxGenericDirButton::SetInitialDirectory(dir);
 297 }
 298
 299 #endif // wxUSE_DIRPICKERCTRL