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         g_object_ref(m_widget);
  85         gtk_widget_show(m_widget);
  86
  87         // we need to know when the dialog has been dismissed clicking OK...
  88         // NOTE: the "clicked" signal is not available for a GtkFileChooserButton
  89         //       thus we are forced to use wxFileDialog's event
  90         m_dialog->Connect(wxEVT_COMMAND_BUTTON_CLICKED,
  91                 wxCommandEventHandler(wxFileButton::OnDialogOK),
  92                 NULL, this);
  93
  94         m_parent->DoAddChild( this );
  95
  96         PostCreation(size);
  97         SetInitialSize(size);
  98     }
  99     else
 100         return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
 101                                            pos, size, style, validator, name);
 102     return true;
 103 }
 104
 105 wxFileButton::~wxFileButton()
 106 {
 107 }
 108
 109 void wxFileButton::OnDialogOK(wxCommandEvent& ev)
 110 {
 111     // the wxFileDialog associated with the GtkFileChooserButton has been closed
 112     // using the OK button, thus the selected file has changed...
 113     if (ev.GetId() == wxID_OK)
 114     {
 115         // ...update our path
 116         UpdatePathFromDialog(m_dialog);
 117
 118         // ...and fire an event
 119         wxFileDirPickerEvent event(wxEVT_COMMAND_FILEPICKER_CHANGED, this, GetId(), m_path);
 120         HandleWindowEvent(event);
 121     }
 122 }
 123
 124 void wxFileButton::SetPath(const wxString &str)
 125 {
 126     m_path = str;
 127     if (m_dialog)
 128         UpdateDialogPath(m_dialog);
 129 }
 130
 131 #endif      // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
 132
 133
 134
 135
 136 #if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
 137
 138 #include <unistd.h> // chdir
 139
 140 //-----------------------------------------------------------------------------
 141 // "current-folder-changed"
 142 //-----------------------------------------------------------------------------
 143
 144 extern "C" {
 145 static void gtk_dirbutton_currentfolderchanged_callback(GtkFileChooserButton *widget,
 146                                                         wxDirButton *p)
 147 {
 148     // update the m_path member of the wxDirButtonGTK
 149     // unless the path was changed by wxDirButton::SetPath()
 150     if (p->m_bIgnoreNextChange)
 151     {
 152         p->m_bIgnoreNextChange=false;
 153         return;
 154     }
 155     wxASSERT(p);
 156
 157     // NB: it's important to use gtk_file_chooser_get_filename instead of
 158     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 159     wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
 160     p->UpdatePath(filename);
 161
 162     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 163     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 164     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 165     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 166     // style was given.
 167     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 168         chdir(filename);
 169
 170     // ...and fire an event
 171     wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 172     p->HandleWindowEvent(event);
 173 }
 174 }
 175
 176
 177 //-----------------------------------------------------------------------------
 178 // wxDirButtonGTK
 179 //-----------------------------------------------------------------------------
 180
 181 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 182
 183 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 184                         const wxString &label, const wxString &path,
 185                         const wxString &message, const wxString &wildcard,
 186                         const wxPoint &pos, const wxSize &size,
 187                         long style, const wxValidator& validator,
 188                         const wxString &name )
 189 {
 190     if (!gtk_check_version(2,6,0))
 191     {
 192         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 193         //                 if you find a problem here, fix it also in wxFileButton !
 194
 195         if (!PreCreation( parent, pos, size ) ||
 196             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 197                                     validator, name))
 198         {
 199             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 200             return false;
 201         }
 202
 203         // create the dialog associated with this button
 204         SetWindowStyle(style);
 205         m_message = message;
 206         m_wildcard = wildcard;
 207         if ((m_dialog = CreateDialog()) == NULL)
 208             return false;
 209         SetPath(path);
 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         g_object_ref(m_widget);
 228
 229         gtk_widget_show(m_widget);
 230
 231         // GtkFileChooserButton signals
 232         g_signal_connect(m_widget, "current-folder-changed",
 233                          G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
 234
 235         m_parent->DoAddChild( this );
 236
 237         PostCreation(size);
 238         SetInitialSize(size);
 239     }
 240     else
 241         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
 242                                           pos, size, style, validator, name);
 243     return true;
 244 }
 245
 246 wxDirButton::~wxDirButton()
 247 {
 248 }
 249
 250 void wxDirButton::SetPath(const wxString& str)
 251 {
 252     if ( m_path == str )
 253     {
 254         // don't do anything and especially don't set m_bIgnoreNextChange
 255         return;
 256     }
 257
 258     m_path = str;
 259
 260     // wxDirButton uses the "current-folder-changed" signal which is triggered also
 261     // when we set the path on the dialog associated with this button; thus we need
 262     // to set the following flag to avoid sending a wxFileDirPickerEvent from this
 263     // function (which would be inconsistent with wxFileButton's behaviour and in
 264     // general with all wxWidgets control-manipulation functions which do not send events).
 265     m_bIgnoreNextChange = true;
 266
 267     if (m_dialog)
 268         UpdateDialogPath(m_dialog);
 269 }
 270
 271 #endif      // wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)