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) && !gtk_check_version(2,6,0) )
  47     {
  48         // VERY IMPORTANT: this code is identic 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         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
  82         //       use as label the currently selected file
  83         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
  84         gtk_widget_show(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_COMMAND_BUTTON_CLICKED,
  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     // GtkFileChooserButton will automatically destroy the
 107     // GtkFileChooserDialog associated with m_dialog.
 108     // Thus we have to set its m_widget to NULL to avoid
 109     // double destruction on same widget
 110     if (m_dialog)
 111         m_dialog->m_widget = NULL;
 112 }
 113
 114 void wxFileButton::OnDialogOK(wxCommandEvent& ev)
 115 {
 116     // the wxFileDialog associated with the GtkFileChooserButton has been closed
 117     // using the OK button, thus the selected file has changed...
 118     if (ev.GetId() == wxID_OK)
 119     {
 120         // ...update our path
 121         UpdatePathFromDialog(m_dialog);
 122
 123         // ...and fire an event
 124         wxFileDirPickerEvent event(wxEVT_COMMAND_FILEPICKER_CHANGED, this, GetId(), m_path);
 125         HandleWindowEvent(event);
 126     }
 127 }
 128
 129 void wxFileButton::SetPath(const wxString &str)
 130 {
 131     m_path = str;
 132     if (m_dialog)
 133         UpdateDialogPath(m_dialog);
 134 }
 135
 136 #endif      // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
 137
 138
 139
 140
 141 #if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
 142
 143 #include <unistd.h> // chdir
 144
 145 //-----------------------------------------------------------------------------
 146 // "current-folder-changed"
 147 //-----------------------------------------------------------------------------
 148
 149 extern "C" {
 150 static void gtk_dirbutton_currentfolderchanged_callback(GtkFileChooserButton *widget,
 151                                                         wxDirButton *p)
 152 {
 153     // update the m_path member of the wxDirButtonGTK
 154     // unless the path was changed by wxDirButton::SetPath()
 155     if (p->m_bIgnoreNextChange)
 156     {
 157         p->m_bIgnoreNextChange=false;
 158         return;
 159     }
 160     wxASSERT(p);
 161
 162     // NB: it's important to use gtk_file_chooser_get_filename instead of
 163     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 164     wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
 165     p->UpdatePath(filename);
 166
 167     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 168     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 169     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 170     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 171     // style was given.
 172     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 173         chdir(filename);
 174
 175     // ...and fire an event
 176     wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 177     p->HandleWindowEvent(event);
 178 }
 179 }
 180
 181
 182 //-----------------------------------------------------------------------------
 183 // wxDirButtonGTK
 184 //-----------------------------------------------------------------------------
 185
 186 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 187
 188 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 189                         const wxString &label, const wxString &path,
 190                         const wxString &message, const wxString &wildcard,
 191                         const wxPoint &pos, const wxSize &size,
 192                         long style, const wxValidator& validator,
 193                         const wxString &name )
 194 {
 195     if (!gtk_check_version(2,6,0))
 196     {
 197         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 198         //                 if you find a problem here, fix it also in wxFileButton !
 199
 200         if (!PreCreation( parent, pos, size ) ||
 201             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 202                                     validator, name))
 203         {
 204             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 205             return false;
 206         }
 207
 208         // create the dialog associated with this button
 209         SetWindowStyle(style);
 210         m_message = message;
 211         m_wildcard = wildcard;
 212         if ((m_dialog = CreateDialog()) == NULL)
 213             return false;
 214         SetPath(path);
 215
 216         // little trick used to avoid problems when there are other GTK windows 'grabbed':
 217         // GtkFileChooserDialog won't be responsive to user events if there is another
 218         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
 219         // in modal mode in the application - see wxDialogGTK::ShowModal).
 220         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
 221         // is clicked and then remove it as soon as the user closes the dialog itself.
 222         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
 223         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
 224         // hidden simply using its "show" and "hide" events - clean & simple :)
 225         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
 226         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
 227
 228
 229         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
 230         //       use as label the currently selected file
 231         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
 232
 233         gtk_widget_show(m_widget);
 234
 235         // GtkFileChooserButton signals
 236         g_signal_connect(m_widget, "current-folder-changed",
 237                          G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
 238
 239         m_parent->DoAddChild( this );
 240
 241         PostCreation(size);
 242         SetInitialSize(size);
 243     }
 244     else
 245         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
 246                                           pos, size, style, validator, name);
 247     return true;
 248 }
 249
 250 wxDirButton::~wxDirButton()
 251 {
 252     // GtkFileChooserButton will automatically destroy the
 253     // GtkFileChooserDialog associated with m_dialog.
 254     // Thus we have to set its m_widget to NULL to avoid
 255     // double destruction on same widget
 256     if (m_dialog)
 257         m_dialog->m_widget = NULL;
 258 }
 259
 260 void wxDirButton::SetPath(const wxString &str)
 261 {
 262     m_path = str;
 263
 264     // wxDirButton uses the "current-folder-changed" signal which is triggered also
 265     // when we set the path on the dialog associated with this button; thus we need
 266     // to set the following flag to avoid sending a wxFileDirPickerEvent from this
 267     // function (which would be inconsistent with wxFileButton's behaviour and in
 268     // general with all wxWidgets control-manipulation functions which do not send events).
 269     m_bIgnoreNextChange = true;
 270
 271     if (m_dialog)
 272         UpdateDialogPath(m_dialog);
 273 }
 274
 275 #endif      // wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)