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