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 <gtk/gtk.h>
  26
  27
  28
  29 // ============================================================================
  30 // implementation
  31 // ============================================================================
  32
  33 //-----------------------------------------------------------------------------
  34 // wxFileButton
  35 //-----------------------------------------------------------------------------
  36
  37 IMPLEMENT_DYNAMIC_CLASS(wxFileButton, wxButton)
  38
  39 bool wxFileButton::Create( wxWindow *parent, wxWindowID id,
  40                         const wxString &label, const wxString &path,
  41                         const wxString &message, const wxString &wildcard,
  42                         const wxPoint &pos, const wxSize &size,
  43                         long style, const wxValidator& validator,
  44                         const wxString &name )
  45 {
  46     if (!gtk_check_version(2,6,0))
  47     {
  48         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
  49         //                 if you find a problem here, fix it also in wxFileButton !
  50
  51         m_needParent = true;
  52
  53         if (!PreCreation( parent, pos, size ) ||
  54             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
  55                                     validator, name))
  56         {
  57             wxFAIL_MSG( wxT("wxFileButton creation failed") );
  58             return false;
  59         }
  60
  61         // create the dialog associated with this button
  62         // NB: unlike generic implementation, native GTK implementation needs to create
  63         //     the filedialog here as it needs to use gtk_file_chooser_button_new_with_dialog()
  64         SetWindowStyle(style);
  65         m_path = path;
  66         m_message = message;
  67         m_wildcard = wildcard;
  68         if ((m_dialog = CreateDialog()) == NULL)
  69             return false;
  70
  71         // little trick used to avoid problems when there are other GTK windows 'grabbed':
  72         // GtkFileChooserDialog won't be responsive to user events if there is another
  73         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
  74         // in modal mode in the application - see wxDialogGTK::ShowModal).
  75         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
  76         // is clicked and then remove it as soon as the user closes the dialog itself.
  77         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
  78         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
  79         // hidden simply using its "show" and "hide" events - clean & simple :)
  80         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
  81         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
  82
  83         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
  84         //       use as label the currently selected file
  85         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
  86         gtk_widget_show( GTK_WIDGET(m_widget) );
  87
  88         // we need to know when the dialog has been dismissed clicking OK...
  89         // NOTE: the "clicked" signal is not available for a GtkFileChooserButton
  90         //       thus we are forced to use wxFileDialog's event
  91         m_dialog->Connect(wxEVT_COMMAND_BUTTON_CLICKED,
  92                 wxCommandEventHandler(wxFileButton::OnDialogOK),
  93                 NULL, this);
  94
  95         m_parent->DoAddChild( this );
  96
  97         PostCreation(size);
  98         SetBestSize(size);
  99     }
 100     else
 101         return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
 102                                            pos, size, style, validator, name);
 103     return true;
 104 }
 105
 106 wxFileButton::~wxFileButton()
 107 {
 108     // GtkFileChooserButton will automatically destroy the
 109     // GtkFileChooserDialog associated with m_dialog.
 110     // Thus we have to set its m_widget to NULL to avoid
 111     // double destruction on same widget
 112     m_dialog->m_widget = NULL;
 113 }
 114
 115 void wxFileButton::OnDialogOK(wxCommandEvent& ev)
 116 {
 117     // the wxFileDialog associated with the GtkFileChooserButton has been closed
 118     // using the OK button, thus the selected file has changed...
 119     if (ev.GetId() == wxID_OK)
 120     {
 121         // ...update our path
 122         UpdatePathFromDialog(m_dialog);
 123
 124         // ...and fire an event
 125         wxFileDirPickerEvent event(wxEVT_COMMAND_FILEPICKER_CHANGED, this, GetId(), m_path);
 126         GetEventHandler()->ProcessEvent(event);
 127     }
 128 }
 129
 130
 131 void wxFileButton::SetPath(const wxString &str)
 132 {
 133     m_path = str;
 134     UpdateDialogPath(m_dialog);
 135 }
 136
 137 #endif      // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
 138
 139
 140
 141
 142 #if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
 143
 144 #include <unistd.h> // chdir
 145
 146 //-----------------------------------------------------------------------------
 147 // "current-folder-changed"
 148 //-----------------------------------------------------------------------------
 149
 150 extern "C" {
 151 static void gtk_dirbutton_currentfolderchanged_callback(GtkFileChooserButton *widget,
 152                                                         wxDirButton *p)
 153 {
 154     // update the m_path member of the wxDirButtonGTK
 155     // unless the path was changed by wxDirButton::SetPath()
 156     if (p->m_bIgnoreNextChange)
 157     {
 158         p->m_bIgnoreNextChange=false;
 159         return;
 160     }
 161     wxASSERT(p);
 162
 163     // NB: it's important to use gtk_file_chooser_get_filename instead of
 164     //     gtk_file_chooser_get_current_folder (see GTK docs) !
 165     gchar* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget));
 166     p->UpdatePath(filename);
 167
 168     // since GtkFileChooserButton when used to pick directories also uses a combobox,
 169     // maybe that the current folder has been changed but not through the GtkFileChooserDialog
 170     // and thus the 'gtk_filedialog_ok_callback' could have not been called...
 171     // thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
 172     // style was given.
 173     if (p->HasFlag(wxDIRP_CHANGE_DIR))
 174         chdir(filename);
 175     g_free(filename);
 176
 177     // ...and fire an event
 178     wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
 179     p->GetEventHandler()->ProcessEvent(event);
 180 }
 181 }
 182
 183
 184 //-----------------------------------------------------------------------------
 185 // wxDirButtonGTK
 186 //-----------------------------------------------------------------------------
 187
 188 IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
 189
 190 bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
 191                         const wxString &label, const wxString &path,
 192                         const wxString &message, const wxString &wildcard,
 193                         const wxPoint &pos, const wxSize &size,
 194                         long style, const wxValidator& validator,
 195                         const wxString &name )
 196 {
 197     if (!gtk_check_version(2,6,0))
 198     {
 199         // VERY IMPORTANT: this code is identic to relative code in wxFileButton;
 200         //                 if you find a problem here, fix it also in wxFileButton !
 201
 202         m_needParent = true;
 203
 204         if (!PreCreation( parent, pos, size ) ||
 205             !wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
 206                                     validator, name))
 207         {
 208             wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
 209             return false;
 210         }
 211
 212         // create the dialog associated with this button
 213         SetWindowStyle(style);
 214         m_message = message;
 215         m_wildcard = wildcard;
 216         if ((m_dialog = CreateDialog()) == NULL)
 217             return false;
 218         SetPath(path);
 219
 220         // little trick used to avoid problems when there are other GTK windows 'grabbed':
 221         // GtkFileChooserDialog won't be responsive to user events if there is another
 222         // window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
 223         // in modal mode in the application - see wxDialogGTK::ShowModal).
 224         // An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
 225         // is clicked and then remove it as soon as the user closes the dialog itself.
 226         // Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
 227         // thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
 228         // hidden simply using its "show" and "hide" events - clean & simple :)
 229         g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
 230         g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
 231
 232
 233         // NOTE: we deliberately ignore the given label as GtkFileChooserButton
 234         //       use as label the currently selected file
 235         m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
 236
 237         gtk_widget_show( GTK_WIDGET(m_widget) );
 238
 239         // GtkFileChooserButton signals
 240         g_signal_connect(m_widget, "current-folder-changed",
 241                          G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
 242
 243         m_parent->DoAddChild( this );
 244
 245         PostCreation(size);
 246         SetBestSize(size);
 247     }
 248     else
 249         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
 250                                           pos, size, style, validator, name);
 251     return true;
 252 }
 253
 254 wxDirButton::~wxDirButton()
 255 {
 256     // GtkFileChooserButton will automatically destroy the
 257     // GtkFileChooserDialog associated with m_dialog.
 258     // Thus we have to set its m_widget to NULL to avoid
 259     // double destruction on same widget
 260     m_dialog->m_widget = NULL;
 261 }
 262
 263 void wxDirButton::SetPath(const wxString &str)
 264 {
 265     m_path = str;
 266
 267     // wxDirButton uses the "current-folder-changed" signal which is triggered also
 268     // when we set the path on the dialog associated with this button; thus we need
 269     // to set the following flag to avoid sending a wxFileDirPickerEvent from this
 270     // function (which would be inconsistent with wxFileButton's behaviour and in
 271     // general with all wxWidgets control-manipulation functions which do not send events).
 272     m_bIgnoreNextChange = true;
 273
 274     UpdateDialogPath(m_dialog);
 275 }
 276
 277 #endif      // wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)