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 #include "wx/gtk/private.h"
  21 #include "wx/filepicker.h"
  22
  23
  24 #if wxUSE_TOOLTIPS
  25 #include "wx/tooltip.h"
  26 #endif
  27
  28 #include <gdk/gdk.h>
  29 #include <gtk/gtk.h>
  30
  31 #include <unistd.h> // chdir
  32
  33
  34 // ============================================================================
  35 // implementation
  36 // ============================================================================
  37
  38 #if wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
  39
  40 //-----------------------------------------------------------------------------
  41 // wxFileButton
  42 //-----------------------------------------------------------------------------
  43
  44 IMPLEMENT_DYNAMIC_CLASS(wxFileButton, wxButton)
  45
  46 bool wxFileButton::Create( wxWindow *parent, wxWindowID id,
  47                         const wxString &label, const wxString &path,
  48                         const wxString &message, const wxString &wildcard,
  49                         const wxPoint &pos, const wxSize &size,
  50                         long style, const wxValidator& validator,
  51                         const wxString &name )
  52 {
  53     if (!gtk_check_version(2,6,0))
  54     {
  55         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
  56         //                 if you find a problem here, fix it also in wxFileButton !
  57
  58         m_needParent = true;
  59
  60         if (!PreCreation( parent, pos, size ) ||
  61             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
  62                                     validator, name))
  63         {
  64             wxFAIL_MSG( wxT("wxFileButton creation failed") );
  65             return false;
  66         }
  67
  68         // create the dialog associated with this button
  69         SetWindowStyle(style);
  70         m_path = path;
  71         if (!CreateDialog(message, wildcard))
  72             return false;
  73
  74         // little trick used to avoid problems when there are other GTK windows 'grabbed':
  75         // GtkFileChooserDialog won't be responsive to user events if there is another
  76         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
  77         // in modal mode in the application - see wxDialogGTK::ShowModal).
  78         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
  79         // is clicked and then remove it as soon as the user closes the dialog itself.
  80         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
  81         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
  82         // hidden simply using its "show" and "hide" events - clean & simple :)
  83         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
  84         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
  85
  86         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
  87         //       use as label the currently selected file
  88         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
  89         gtk_widget_show( GTK_WIDGET(m_widget) );
  90
  91         // we need to know when the dialog has been dismissed clicking OK...
  92         // NOTE: the "clicked" signal is not available for a GtkFileChooserButton
  93         //       thus we are forced to use wxFileDialog's event
  94         m_dialog->Connect(wxEVT_COMMAND_BUTTON_CLICKED,
  95                 wxCommandEventHandler(wxFileButton::OnDialogOK),
  96                 NULL, this);
  97
  98         m_parent->DoAddChild( this );
  99
 100         PostCreation(size);
 101         SetBestSize(size);
 102     }
 103     else
 104         return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
 105                                            pos, size, style, validator, name);
 106     return true;
 107 }
 108
 109 wxFileButton::~wxFileButton()
 110 {
 111     // GtkFileChooserButton will automatically destroy the
 112     // GtkFileChooserDialog associated with m_dialog.
 113     // Thus we have to set its m_widget to NULL to avoid
 114     // double destruction on same widget
 115     m_dialog->m_widget = NULL;
 116 }
 117
 118 void wxFileButton::OnDialogOK(wxCommandEvent& ev)
 119 {
 120     // the wxFileDialog associated with the GtkFileChooserButton has been closed
 121     // using the OK button, thus the selected file has changed...
 122     if (ev.GetId() == wxID_OK)
 123     {
 124         // ...update our path
 125         UpdatePathFromDialog();
 126
 127         // ...and fire an event
 128         wxFileDirPickerEvent event(wxEVT_COMMAND_FILEPICKER_CHANGED, this, GetId(), m_path);
 129         GetEventHandler()->ProcessEvent(event);
 130     }
 131 }
 132
 133 #endif      // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
 134
 135
 136
 137
 138 #if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
 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     wxASSERT(p);
 150
 151     // NB: it's important to use gtk_file_chooser_get_filename instead of
 152     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 153     gchar* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget));
 154     p->UpdatePath(filename);
 155
 156     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 157     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 158     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 159     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 160     // style was given.
 161     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 162         chdir(filename);
 163     g_free(filename);
 164
 165     // ...and fire an event
 166     wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 167     p->GetEventHandler()->ProcessEvent(event);
 168 }
 169 }
 170
 171
 172 //-----------------------------------------------------------------------------
 173 // wxDirButtonGTK
 174 //-----------------------------------------------------------------------------
 175
 176 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 177
 178 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 179                         const wxString &label, const wxString &path,
 180                         const wxString &message, const wxString &wildcard,
 181                         const wxPoint &pos, const wxSize &size,
 182                         long style, const wxValidator& validator,
 183                         const wxString &name )
 184 {
 185     if (!gtk_check_version(2,6,0))
 186     {
 187         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 188         //                 if you find a problem here, fix it also in wxFileButton !
 189
 190         m_needParent = true;
 191
 192         if (!PreCreation( parent, pos, size ) ||
 193             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 194                                     validator, name))
 195         {
 196             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 197             return false;
 198         }
 199
 200         // create the dialog associated with this button
 201         SetWindowStyle(style);
 202         m_path = path;
 203         if (!CreateDialog(message, wildcard))
 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__)