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
  24 #include "wx/gtk/private.h"
  25
  26 #if wxUSE_TOOLTIPS
  27     #include "wx/tooltip.h"
  28 #endif
  29
  30 #include <gdk/gdk.h>
  31 #include <gtk/gtk.h>
  32
  33 #include <unistd.h> // chdir
  34
  35
  36 // ============================================================================
  37 // implementation
  38 // ============================================================================
  39
  40 //-----------------------------------------------------------------------------
  41 // wxFileButton
  42 //-----------------------------------------------------------------------------
  43
  44 IMPLEMENT_DYNAMIC_CLASS(wxFileButton, wxButton)
  45
  46 bool wxFileButton::Create( wxWindow *parent, wxWindowID id,
  47                         const wxString &label, const wxString &path,
  48                         const wxString &message, const wxString &wildcard,
  49                         const wxPoint &pos, const wxSize &size,
  50                         long style, const wxValidator& validator,
  51                         const wxString &name )
  52 {
  53     if (!gtk_check_version(2,6,0))
  54     {
  55         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
  56         //                 if you find a problem here, fix it also in wxFileButton !
  57
  58         m_needParent = true;
  59
  60         if (!PreCreation( parent, pos, size ) ||
  61             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
  62                                     validator, name))
  63         {
  64             wxFAIL_MSG( wxT("wxFileButton creation failed") );
  65             return false;
  66         }
  67
  68         // create the dialog associated with this button
  69         // NB: unlike generic implementation, native GTK implementation needs to create
  70         //     the filedialog here as it needs to use gtk_file_chooser_button_new_with_dialog()
  71         SetWindowStyle(style);
  72         m_path = path;
  73         m_message = message;
  74         m_wildcard = wildcard;
  75         if ((m_dialog = CreateDialog()) == NULL)
  76             return false;
  77
  78         // little trick used to avoid problems when there are other GTK windows 'grabbed':
  79         // GtkFileChooserDialog won't be responsive to user events if there is another
  80         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
  81         // in modal mode in the application - see wxDialogGTK::ShowModal).
  82         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
  83         // is clicked and then remove it as soon as the user closes the dialog itself.
  84         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
  85         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
  86         // hidden simply using its "show" and "hide" events - clean & simple :)
  87         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
  88         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
  89
  90         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
  91         //       use as label the currently selected file
  92         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
  93         gtk_widget_show( GTK_WIDGET(m_widget) );
  94
  95         // we need to know when the dialog has been dismissed clicking OK...
  96         // NOTE: the "clicked" signal is not available for a GtkFileChooserButton
  97         //       thus we are forced to use wxFileDialog's event
  98         m_dialog->Connect(wxEVT_COMMAND_BUTTON_CLICKED,
  99                 wxCommandEventHandler(wxFileButton::OnDialogOK),
 100                 NULL, this);
 101
 102         m_parent->DoAddChild( this );
 103
 104         PostCreation(size);
 105         SetBestSize(size);
 106     }
 107     else
 108         return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
 109                                            pos, size, style, validator, name);
 110     return true;
 111 }
 112
 113 wxFileButton::~wxFileButton()
 114 {
 115     // GtkFileChooserButton will automatically destroy the
 116     // GtkFileChooserDialog associated with m_dialog.
 117     // Thus we have to set its m_widget to NULL to avoid
 118     // double destruction on same widget
 119     m_dialog->m_widget = NULL;
 120 }
 121
 122 void wxFileButton::OnDialogOK(wxCommandEvent& ev)
 123 {
 124     // the wxFileDialog associated with the GtkFileChooserButton has been closed
 125     // using the OK button, thus the selected file has changed...
 126     if (ev.GetId() == wxID_OK)
 127     {
 128         // ...update our path
 129         UpdatePathFromDialog(m_dialog);
 130
 131         // ...and fire an event
 132         wxFileDirPickerEvent event(wxEVT_COMMAND_FILEPICKER_CHANGED, this, GetId(), m_path);
 133         GetEventHandler()->ProcessEvent(event);
 134     }
 135 }
 136
 137 #endif      // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
 138
 139
 140
 141
 142 #if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
 143
 144 //-----------------------------------------------------------------------------
 145 // "current-folder-changed"
 146 //-----------------------------------------------------------------------------
 147
 148 extern "C" {
 149 static void gtk_dirbutton_currentfolderchanged_callback(GtkFileChooserButton *widget,
 150                                                         wxDirButton *p)
 151 {
 152     // update the m_path member of the wxDirButtonGTK
 153     wxASSERT(p);
 154
 155     // NB: it's important to use gtk_file_chooser_get_filename instead of
 156     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 157     gchar* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget));
 158     p->UpdatePath(filename);
 159
 160     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 161     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 162     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 163     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 164     // style was given.
 165     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 166         chdir(filename);
 167     g_free(filename);
 168
 169     // ...and fire an event
 170     wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 171     p->GetEventHandler()->ProcessEvent(event);
 172 }
 173 }
 174
 175
 176 //-----------------------------------------------------------------------------
 177 // wxDirButtonGTK
 178 //-----------------------------------------------------------------------------
 179
 180 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 181
 182 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 183                         const wxString &label, const wxString &path,
 184                         const wxString &message, const wxString &wildcard,
 185                         const wxPoint &pos, const wxSize &size,
 186                         long style, const wxValidator& validator,
 187                         const wxString &name )
 188 {
 189     if (!gtk_check_version(2,6,0))
 190     {
 191         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 192         //                 if you find a problem here, fix it also in wxFileButton !
 193
 194         m_needParent = true;
 195
 196         if (!PreCreation( parent, pos, size ) ||
 197             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 198                                     validator, name))
 199         {
 200             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 201             return false;
 202         }
 203
 204         // create the dialog associated with this button
 205         SetWindowStyle(style);
 206         m_message = message;
 207         m_wildcard = wildcard;
 208         if ((m_dialog = CreateDialog()) == NULL)
 209             return false;
 210
 211         // little trick used to avoid problems when there are other GTK windows 'grabbed':
 212         // GtkFileChooserDialog won't be responsive to user events if there is another
 213         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
 214         // in modal mode in the application - see wxDialogGTK::ShowModal).
 215         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
 216         // is clicked and then remove it as soon as the user closes the dialog itself.
 217         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
 218         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
 219         // hidden simply using its "show" and "hide" events - clean & simple :)
 220         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
 221         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
 222
 223
 224         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
 225         //       use as label the currently selected file
 226         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
 227
 228         gtk_widget_show( GTK_WIDGET(m_widget) );
 229
 230         // GtkFileChooserButton signals
 231         g_signal_connect(m_widget, "current-folder-changed",
 232                          G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
 233
 234         m_parent->DoAddChild( this );
 235
 236         PostCreation(size);
 237         SetBestSize(size);
 238     }
 239     else
 240         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
 241                                           pos, size, style, validator, name);
 242     return true;
 243 }
 244
 245 wxDirButton::~wxDirButton()
 246 {
 247     // GtkFileChooserButton will automatically destroy the
 248     // GtkFileChooserDialog associated with m_dialog.
 249     // Thus we have to set its m_widget to NULL to avoid
 250     // double destruction on same widget
 251     m_dialog->m_widget = NULL;
 252 }
 253
 254 #endif      // wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)