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     if (!gtk_check_version(2,6,0))
  45     {
  46         // VERY IMPORTANT: this code is identic to relative code in wxDirButton;
  47         //                 if you find a problem here, fix it also in wxDirButton !
  48
  49         if (!PreCreation( parent, pos, size ) ||
  50             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
  51                                     validator, name))
  52         {
  53             wxFAIL_MSG( wxT("wxFileButton creation failed") );
  54             return false;
  55         }
  56
  57         // create the dialog associated with this button
  58         // NB: unlike generic implementation, native GTK implementation needs to create
  59         //     the filedialog here as it needs to use gtk_file_chooser_button_new_with_dialog()
  60         SetWindowStyle(style);
  61         m_path = path;
  62         m_message = message;
  63         m_wildcard = wildcard;
  64         if ((m_dialog = CreateDialog()) == NULL)
  65             return false;
  66
  67         // little trick used to avoid problems when there are other GTK windows 'grabbed':
  68         // GtkFileChooserDialog won't be responsive to user events if there is another
  69         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
  70         // in modal mode in the application - see wxDialogGTK::ShowModal).
  71         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
  72         // is clicked and then remove it as soon as the user closes the dialog itself.
  73         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
  74         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
  75         // hidden simply using its "show" and "hide" events - clean & simple :)
  76         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
  77         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
  78
  79         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
  80         //       use as label the currently selected file
  81         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
  82         gtk_widget_show(m_widget);
  83
  84         // we need to know when the dialog has been dismissed clicking OK...
  85         // NOTE: the "clicked" signal is not available for a GtkFileChooserButton
  86         //       thus we are forced to use wxFileDialog's event
  87         m_dialog->Connect(wxEVT_COMMAND_BUTTON_CLICKED,
  88                 wxCommandEventHandler(wxFileButton::OnDialogOK),
  89                 NULL, this);
  90
  91         m_parent->DoAddChild( this );
  92
  93         PostCreation(size);
  94         SetInitialSize(size);
  95     }
  96     else
  97         return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
  98                                            pos, size, style, validator, name);
  99     return true;
 100 }
 101
 102 wxFileButton::~wxFileButton()
 103 {
 104     // GtkFileChooserButton will automatically destroy the
 105     // GtkFileChooserDialog associated with m_dialog.
 106     // Thus we have to set its m_widget to NULL to avoid
 107     // double destruction on same widget
 108     if (m_dialog)
 109         m_dialog->m_widget = NULL;
 110 }
 111
 112 void wxFileButton::OnDialogOK(wxCommandEvent& ev)
 113 {
 114     // the wxFileDialog associated with the GtkFileChooserButton has been closed
 115     // using the OK button, thus the selected file has changed...
 116     if (ev.GetId() == wxID_OK)
 117     {
 118         // ...update our path
 119         UpdatePathFromDialog(m_dialog);
 120
 121         // ...and fire an event
 122         wxFileDirPickerEvent event(wxEVT_COMMAND_FILEPICKER_CHANGED, this, GetId(), m_path);
 123         HandleWindowEvent(event);
 124     }
 125 }
 126
 127 void wxFileButton::SetPath(const wxString &str)
 128 {
 129     m_path = str;
 130     if (m_dialog)
 131         UpdateDialogPath(m_dialog);
 132 }
 133
 134 #endif      // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
 135
 136
 137
 138
 139 #if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
 140
 141 #include <unistd.h> // chdir
 142
 143 //-----------------------------------------------------------------------------
 144 // "current-folder-changed"
 145 //-----------------------------------------------------------------------------
 146
 147 extern "C" {
 148 static void gtk_dirbutton_currentfolderchanged_callback(GtkFileChooserButton *widget,
 149                                                         wxDirButton *p)
 150 {
 151     // update the m_path member of the wxDirButtonGTK
 152     // unless the path was changed by wxDirButton::SetPath()
 153     if (p->m_bIgnoreNextChange)
 154     {
 155         p->m_bIgnoreNextChange=false;
 156         return;
 157     }
 158     wxASSERT(p);
 159
 160     // NB: it's important to use gtk_file_chooser_get_filename instead of
 161     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 162     wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
 163     p->UpdatePath(filename);
 164
 165     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 166     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 167     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 168     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 169     // style was given.
 170     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 171         chdir(filename);
 172
 173     // ...and fire an event
 174     wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 175     p->HandleWindowEvent(event);
 176 }
 177 }
 178
 179
 180 //-----------------------------------------------------------------------------
 181 // wxDirButtonGTK
 182 //-----------------------------------------------------------------------------
 183
 184 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 185
 186 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 187                         const wxString &label, const wxString &path,
 188                         const wxString &message, const wxString &wildcard,
 189                         const wxPoint &pos, const wxSize &size,
 190                         long style, const wxValidator& validator,
 191                         const wxString &name )
 192 {
 193     if (!gtk_check_version(2,6,0))
 194     {
 195         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 196         //                 if you find a problem here, fix it also in wxFileButton !
 197
 198         if (!PreCreation( parent, pos, size ) ||
 199             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 200                                     validator, name))
 201         {
 202             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 203             return false;
 204         }
 205
 206         // create the dialog associated with this button
 207         SetWindowStyle(style);
 208         m_message = message;
 209         m_wildcard = wildcard;
 210         if ((m_dialog = CreateDialog()) == NULL)
 211             return false;
 212         SetPath(path);
 213
 214         // little trick used to avoid problems when there are other GTK windows 'grabbed':
 215         // GtkFileChooserDialog won't be responsive to user events if there is another
 216         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
 217         // in modal mode in the application - see wxDialogGTK::ShowModal).
 218         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
 219         // is clicked and then remove it as soon as the user closes the dialog itself.
 220         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
 221         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
 222         // hidden simply using its "show" and "hide" events - clean & simple :)
 223         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
 224         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
 225
 226
 227         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
 228         //       use as label the currently selected file
 229         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
 230
 231         gtk_widget_show(m_widget);
 232
 233         // GtkFileChooserButton signals
 234         g_signal_connect(m_widget, "current-folder-changed",
 235                          G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
 236
 237         m_parent->DoAddChild( this );
 238
 239         PostCreation(size);
 240         SetInitialSize(size);
 241     }
 242     else
 243         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
 244                                           pos, size, style, validator, name);
 245     return true;
 246 }
 247
 248 wxDirButton::~wxDirButton()
 249 {
 250     // GtkFileChooserButton will automatically destroy the
 251     // GtkFileChooserDialog associated with m_dialog.
 252     // Thus we have to set its m_widget to NULL to avoid
 253     // double destruction on same widget
 254     if (m_dialog)
 255         m_dialog->m_widget = NULL;
 256 }
 257
 258 void wxDirButton::SetPath(const wxString &str)
 259 {
 260     m_path = str;
 261
 262     // wxDirButton uses the "current-folder-changed" signal which is triggered also
 263     // when we set the path on the dialog associated with this button; thus we need
 264     // to set the following flag to avoid sending a wxFileDirPickerEvent from this
 265     // function (which would be inconsistent with wxFileButton's behaviour and in
 266     // general with all wxWidgets control-manipulation functions which do not send events).
 267     m_bIgnoreNextChange = true;
 268
 269     if (m_dialog)
 270         UpdateDialogPath(m_dialog);
 271 }
 272
 273 #endif      // wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)