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         m_needParent = true;
  50         m_acceptsFocus = true;
  51
  52         if (!PreCreation( parent, pos, size ) ||
  53             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
  54                                     validator, name))
  55         {
  56             wxFAIL_MSG( wxT("wxFileButton creation failed") );
  57             return false;
  58         }
  59
  60         // create the dialog associated with this button
  61         // NB: unlike generic implementation, native GTK implementation needs to create
  62         //     the filedialog here as it needs to use gtk_file_chooser_button_new_with_dialog()
  63         SetWindowStyle(style);
  64         m_path = path;
  65         m_message = message;
  66         m_wildcard = wildcard;
  67         if ((m_dialog = CreateDialog()) == NULL)
  68             return false;
  69
  70         // little trick used to avoid problems when there are other GTK windows 'grabbed':
  71         // GtkFileChooserDialog won't be responsive to user events if there is another
  72         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
  73         // in modal mode in the application - see wxDialogGTK::ShowModal).
  74         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
  75         // is clicked and then remove it as soon as the user closes the dialog itself.
  76         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
  77         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
  78         // hidden simply using its "show" and "hide" events - clean & simple :)
  79         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
  80         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
  81
  82         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
  83         //       use as label the currently selected file
  84         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
  85         gtk_widget_show( GTK_WIDGET(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         SetBestSize(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     // GtkFileChooserButton will automatically destroy the
 108     // GtkFileChooserDialog associated with m_dialog.
 109     // Thus we have to set its m_widget to NULL to avoid
 110     // double destruction on same widget
 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         GetEventHandler()->ProcessEvent(event);
 126     }
 127 }
 128
 129 void wxFileButton::SetPath(const wxString &str)
 130 {
 131     m_path = str;
 132     UpdateDialogPath(m_dialog);
 133 }
 134
 135 #endif      // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
 136
 137
 138
 139
 140 #if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
 141
 142 #include <unistd.h> // chdir
 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     // unless the path was changed by wxDirButton::SetPath()
 154     if (p->m_bIgnoreNextChange)
 155     {
 156         p->m_bIgnoreNextChange=false;
 157         return;
 158     }
 159     wxASSERT(p);
 160
 161     // NB: it's important to use gtk_file_chooser_get_filename instead of
 162     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 163     wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
 164     p->UpdatePath(filename);
 165
 166     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 167     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 168     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 169     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 170     // style was given.
 171     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 172         chdir(filename);
 173
 174     // ...and fire an event
 175     wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 176     p->GetEventHandler()->ProcessEvent(event);
 177 }
 178 }
 179
 180
 181 //-----------------------------------------------------------------------------
 182 // wxDirButtonGTK
 183 //-----------------------------------------------------------------------------
 184
 185 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 186
 187 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 188                         const wxString &label, const wxString &path,
 189                         const wxString &message, const wxString &wildcard,
 190                         const wxPoint &pos, const wxSize &size,
 191                         long style, const wxValidator& validator,
 192                         const wxString &name )
 193 {
 194     if (!gtk_check_version(2,6,0))
 195     {
 196         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 197         //                 if you find a problem here, fix it also in wxFileButton !
 198
 199         m_needParent = true;
 200         m_acceptsFocus = true;
 201
 202         if (!PreCreation( parent, pos, size ) ||
 203             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 204                                     validator, name))
 205         {
 206             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 207             return false;
 208         }
 209
 210         // create the dialog associated with this button
 211         SetWindowStyle(style);
 212         m_message = message;
 213         m_wildcard = wildcard;
 214         if ((m_dialog = CreateDialog()) == NULL)
 215             return false;
 216         SetPath(path);
 217
 218         // little trick used to avoid problems when there are other GTK windows 'grabbed':
 219         // GtkFileChooserDialog won't be responsive to user events if there is another
 220         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
 221         // in modal mode in the application - see wxDialogGTK::ShowModal).
 222         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
 223         // is clicked and then remove it as soon as the user closes the dialog itself.
 224         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
 225         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
 226         // hidden simply using its "show" and "hide" events - clean & simple :)
 227         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
 228         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
 229
 230
 231         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
 232         //       use as label the currently selected file
 233         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
 234
 235         gtk_widget_show( GTK_WIDGET(m_widget) );
 236
 237         // GtkFileChooserButton signals
 238         g_signal_connect(m_widget, "current-folder-changed",
 239                          G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
 240
 241         m_parent->DoAddChild( this );
 242
 243         PostCreation(size);
 244         SetBestSize(size);
 245     }
 246     else
 247         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
 248                                           pos, size, style, validator, name);
 249     return true;
 250 }
 251
 252 wxDirButton::~wxDirButton()
 253 {
 254     // GtkFileChooserButton will automatically destroy the
 255     // GtkFileChooserDialog associated with m_dialog.
 256     // Thus we have to set its m_widget to NULL to avoid
 257     // double destruction on same widget
 258     m_dialog->m_widget = NULL;
 259 }
 260
 261 void wxDirButton::SetPath(const wxString &str)
 262 {
 263     m_path = str;
 264
 265     // wxDirButton uses the "current-folder-changed" signal which is triggered also
 266     // when we set the path on the dialog associated with this button; thus we need
 267     // to set the following flag to avoid sending a wxFileDirPickerEvent from this
 268     // function (which would be inconsistent with wxFileButton's behaviour and in
 269     // general with all wxWidgets control-manipulation functions which do not send events).
 270     m_bIgnoreNextChange = true;
 271
 272     UpdateDialogPath(m_dialog);
 273 }
 274
 275 #endif      // wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)