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 <gtk/gtk.h>
  26
  27
  28
  29 // ============================================================================
  30 // implementation
  31 // ============================================================================
  32
  33 //-----------------------------------------------------------------------------
  34 // wxFileButton
  35 //-----------------------------------------------------------------------------
  36
  37 IMPLEMENT_DYNAMIC_CLASS(wxFileButton, wxButton)
  38
  39 bool wxFileButton::Create( wxWindow *parent, wxWindowID id,
  40                         const wxString &label, const wxString &path,
  41                         const wxString &message, const wxString &wildcard,
  42                         const wxPoint &pos, const wxSize &size,
  43                         long style, const wxValidator& validator,
  44                         const wxString &name )
  45 {
  46     if (!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         m_needParent = true;
  52         m_acceptsFocus = true;
  53
  54         if (!PreCreation( parent, pos, size ) ||
  55             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
  56                                     validator, name))
  57         {
  58             wxFAIL_MSG( wxT("wxFileButton creation failed") );
  59             return false;
  60         }
  61
  62         // create the dialog associated with this button
  63         // NB: unlike generic implementation, native GTK implementation needs to create
  64         //     the filedialog here as it needs to use gtk_file_chooser_button_new_with_dialog()
  65         SetWindowStyle(style);
  66         m_path = path;
  67         m_message = message;
  68         m_wildcard = wildcard;
  69         if ((m_dialog = CreateDialog()) == NULL)
  70             return false;
  71
  72         // little trick used to avoid problems when there are other GTK windows 'grabbed':
  73         // GtkFileChooserDialog won't be responsive to user events if there is another
  74         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
  75         // in modal mode in the application - see wxDialogGTK::ShowModal).
  76         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
  77         // is clicked and then remove it as soon as the user closes the dialog itself.
  78         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
  79         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
  80         // hidden simply using its "show" and "hide" events - clean & simple :)
  81         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
  82         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
  83
  84         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
  85         //       use as label the currently selected file
  86         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
  87         gtk_widget_show( GTK_WIDGET(m_widget) );
  88
  89         // we need to know when the dialog has been dismissed clicking OK...
  90         // NOTE: the "clicked" signal is not available for a GtkFileChooserButton
  91         //       thus we are forced to use wxFileDialog's event
  92         m_dialog->Connect(wxEVT_COMMAND_BUTTON_CLICKED,
  93                 wxCommandEventHandler(wxFileButton::OnDialogOK),
  94                 NULL, this);
  95
  96         m_parent->DoAddChild( this );
  97
  98         PostCreation(size);
  99         SetBestSize(size);
 100     }
 101     else
 102         return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
 103                                            pos, size, style, validator, name);
 104     return true;
 105 }
 106
 107 wxFileButton::~wxFileButton()
 108 {
 109     // GtkFileChooserButton will automatically destroy the
 110     // GtkFileChooserDialog associated with m_dialog.
 111     // Thus we have to set its m_widget to NULL to avoid
 112     // double destruction on same widget
 113     m_dialog->m_widget = NULL;
 114 }
 115
 116 void wxFileButton::OnDialogOK(wxCommandEvent& ev)
 117 {
 118     // the wxFileDialog associated with the GtkFileChooserButton has been closed
 119     // using the OK button, thus the selected file has changed...
 120     if (ev.GetId() == wxID_OK)
 121     {
 122         // ...update our path
 123         UpdatePathFromDialog(m_dialog);
 124
 125         // ...and fire an event
 126         wxFileDirPickerEvent event(wxEVT_COMMAND_FILEPICKER_CHANGED, this, GetId(), m_path);
 127         GetEventHandler()->ProcessEvent(event);
 128     }
 129 }
 130
 131 void wxFileButton::SetPath(const wxString &str)
 132 {
 133     m_path = str;
 134     UpdateDialogPath(m_dialog);
 135 }
 136
 137 #endif      // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
 138
 139
 140
 141
 142 #if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
 143
 144 #include <unistd.h> // chdir
 145
 146 //-----------------------------------------------------------------------------
 147 // "current-folder-changed"
 148 //-----------------------------------------------------------------------------
 149
 150 extern "C" {
 151 static void gtk_dirbutton_currentfolderchanged_callback(GtkFileChooserButton *widget,
 152                                                         wxDirButton *p)
 153 {
 154     // update the m_path member of the wxDirButtonGTK
 155     // unless the path was changed by wxDirButton::SetPath()
 156     if (p->m_bIgnoreNextChange)
 157     {
 158         p->m_bIgnoreNextChange=false;
 159         return;
 160     }
 161     wxASSERT(p);
 162
 163     // NB: it's important to use gtk_file_chooser_get_filename instead of
 164     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 165     gchar* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget));
 166     p->UpdatePath(filename);
 167
 168     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 169     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 170     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 171     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 172     // style was given.
 173     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 174         chdir(filename);
 175     g_free(filename);
 176
 177     // ...and fire an event
 178     wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 179     p->GetEventHandler()->ProcessEvent(event);
 180 }
 181 }
 182
 183
 184 //-----------------------------------------------------------------------------
 185 // wxDirButtonGTK
 186 //-----------------------------------------------------------------------------
 187
 188 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 189
 190 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 191                         const wxString &label, const wxString &path,
 192                         const wxString &message, const wxString &wildcard,
 193                         const wxPoint &pos, const wxSize &size,
 194                         long style, const wxValidator& validator,
 195                         const wxString &name )
 196 {
 197     if (!gtk_check_version(2,6,0))
 198     {
 199         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 200         //                 if you find a problem here, fix it also in wxFileButton !
 201
 202         m_needParent = true;
 203         m_acceptsFocus = true;
 204
 205         if (!PreCreation( parent, pos, size ) ||
 206             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 207                                     validator, name))
 208         {
 209             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 210             return false;
 211         }
 212
 213         // create the dialog associated with this button
 214         SetWindowStyle(style);
 215         m_message = message;
 216         m_wildcard = wildcard;
 217         if ((m_dialog = CreateDialog()) == NULL)
 218             return false;
 219         SetPath(path);
 220
 221         // little trick used to avoid problems when there are other GTK windows 'grabbed':
 222         // GtkFileChooserDialog won't be responsive to user events if there is another
 223         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
 224         // in modal mode in the application - see wxDialogGTK::ShowModal).
 225         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
 226         // is clicked and then remove it as soon as the user closes the dialog itself.
 227         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
 228         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
 229         // hidden simply using its "show" and "hide" events - clean & simple :)
 230         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
 231         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
 232
 233
 234         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
 235         //       use as label the currently selected file
 236         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
 237
 238         gtk_widget_show( GTK_WIDGET(m_widget) );
 239
 240         // GtkFileChooserButton signals
 241         g_signal_connect(m_widget, "current-folder-changed",
 242                          G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
 243
 244         m_parent->DoAddChild( this );
 245
 246         PostCreation(size);
 247         SetBestSize(size);
 248     }
 249     else
 250         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
 251                                           pos, size, style, validator, name);
 252     return true;
 253 }
 254
 255 wxDirButton::~wxDirButton()
 256 {
 257     // GtkFileChooserButton will automatically destroy the
 258     // GtkFileChooserDialog associated with m_dialog.
 259     // Thus we have to set its m_widget to NULL to avoid
 260     // double destruction on same widget
 261     m_dialog->m_widget = NULL;
 262 }
 263
 264 void wxDirButton::SetPath(const wxString &str)
 265 {
 266     m_path = str;
 267
 268     // wxDirButton uses the "current-folder-changed" signal which is triggered also
 269     // when we set the path on the dialog associated with this button; thus we need
 270     // to set the following flag to avoid sending a wxFileDirPickerEvent from this
 271     // function (which would be inconsistent with wxFileButton's behaviour and in
 272     // general with all wxWidgets control-manipulation functions which do not send events).
 273     m_bIgnoreNextChange = true;
 274
 275     UpdateDialogPath(m_dialog);
 276 }
 277
 278 #endif      // wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)