handle EINTR when reading data from the wakeup pipe

[wxWidgets.git] / src / gtk / filedlg.cpp

diff --git a/src/gtk/filedlg.cpp b/src/gtk/filedlg.cpp
index 687e2a44b08ec8925e7721683c4e87ccb8c43616..d7a2d8a57e663aeaf1d48044df60b2f4de0e56f9 100644 (file)
--- a/src/gtk/filedlg.cpp
+++ b/src/gtk/filedlg.cpp
@@ -1,194 +1,414 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        gtk/filedlg.cpp
-// Purpose:
-// Author:      Robert Roebling
+// Name:        src/gtk/filedlg.cpp
+// Purpose:     native implementation of wxFileDialog
+// Author:      Robert Roebling, Zbigniew Zagorski, Mart Raudsepp

 // Id:          $Id$
 // Id:          $Id$

-// Copyright:   (c) 1998 Robert Roebling
+// Copyright:   (c) 1998 Robert Roebling, 2004 Zbigniew Zagorski, 2005 Mart Raudsepp

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "filedlg.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if wxUSE_FILEDLG 

 
 #include "wx/filedlg.h"
 
 #include "wx/filedlg.h"

-#include "wx/utils.h"
-#include "wx/intl.h"
-#include "wx/generic/msgdlgg.h"

 
 

+#ifndef WX_PRECOMP
+    #include "wx/intl.h"
+    #include "wx/msgdlg.h"
+#endif

 
 #include <gtk/gtk.h>
 
 #include <gtk/gtk.h>

+#include "wx/gtk/private.h"

 
 

-//-----------------------------------------------------------------------------
-// idle system
-//-----------------------------------------------------------------------------
-
-extern void wxapp_install_idle_handler();
-extern bool g_isIdle;
-
-//-----------------------------------------------------------------------------
-// "delete_event"
-//-----------------------------------------------------------------------------
-
-static
-bool gtk_filedialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxDialog *win )
-{
-    if (g_isIdle) wxapp_install_idle_handler();
-
-/*
-    printf( "OnDelete from " );
-    if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
-        printf( win->GetClassInfo()->GetClassName() );
-    printf( ".\n" );
-*/
+#include <unistd.h> // chdir

 
 

-    win->Close();
-
-    return TRUE;
-}
+#include "wx/filename.h" // wxFilename
+#include "wx/tokenzr.h" // wxStringTokenizer
+#include "wx/filefn.h" // ::wxGetCwd

 
 //-----------------------------------------------------------------------------
 // "clicked" for OK-button
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // "clicked" for OK-button
 //-----------------------------------------------------------------------------
 

-static
-void gtk_filedialog_ok_callback( GtkWidget *WXUNUSED(widget), wxFileDialog *dialog )
+extern "C" {
+static void gtk_filedialog_ok_callback(GtkWidget *widget, wxFileDialog *dialog)

 {
 {

-    if (g_isIdle) wxapp_install_idle_handler();
-
-    int style = dialog->GetStyle();
-
-    GtkFileSelection *filedlg = GTK_FILE_SELECTION(dialog->m_widget);
-    char *filename = gtk_file_selection_get_filename(filedlg);
+    int style = dialog->GetWindowStyle();
+    wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));

 
 

-    if ( (style & wxSAVE) && ( style & wxOVERWRITE_PROMPT ) )
+    // gtk version numbers must be identical with the one in ctor (that calls set_do_overwrite_confirmation)
+#if GTK_CHECK_VERSION(2,7,3)
+    if (gtk_check_version(2, 7, 3) != NULL)
+#endif

     {
     {

-        if (wxFileExists( filename ))
+        if ((style & wxFD_SAVE) && (style & wxFD_OVERWRITE_PROMPT))

         {
         {

-            wxString msg;
-            msg.Printf( _("File '%s' already exists, do you really want to "
-                         "overwrite it?"), filename);
-
-            if (wxMessageBox(msg, _("Confirm"), wxYES_NO) != wxYES)
-                return;
+            if ( g_file_test(filename, G_FILE_TEST_EXISTS) )
+            {
+                wxString msg;
+
+                msg.Printf(
+                    _("File '%s' already exists, do you really want to overwrite it?"),
+                    wxString(filename, *wxConvFileName));
+
+                wxMessageDialog dlg(dialog, msg, _("Confirm"),
+                                   wxYES_NO | wxICON_QUESTION);
+                if (dlg.ShowModal() != wxID_YES)
+                    return;
+            }

         }
     }
         }
     }

-    else if ( (style & wxOPEN) && ( style & wxFILE_MUST_EXIST) )
+
+    if (style & wxFD_FILE_MUST_EXIST)

     {
     {

-        if ( !wxFileExists( filename ) )
+        if ( !g_file_test(filename, G_FILE_TEST_EXISTS) )

         {
         {

-            wxMessageBox(_("Please choose an existing file."), _("Error"), wxOK);
-
+            wxMessageDialog dlg( dialog, _("Please choose an existing file."),
+                                 _("Error"), wxOK| wxICON_ERROR);
+            dlg.ShowModal();

             return;
         }
     }
 
     // change to the directory where the user went if asked
             return;
         }
     }
 
     // change to the directory where the user went if asked

-    if ( style & wxCHANGE_DIR )
+    if (style & wxFD_CHANGE_DIR)

     {
     {

-        wxString cwd;
-        wxSplitPath(filename, &cwd, NULL, NULL);
-
-        if ( cwd != wxGetWorkingDirectory() )
-        {
-            wxSetWorkingDirectory(cwd);
-        }
+        // Use chdir to not care about filename encodings
+        wxGtkString folder(g_path_get_dirname(filename));
+        chdir(folder);

     }
 
     }
 

-    dialog->SetPath( filename );
-

     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK);
     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK);

-    event.SetEventObject( dialog );
-    dialog->GetEventHandler()->ProcessEvent( event );
+    event.SetEventObject(dialog);
+    dialog->HandleWindowEvent(event);
+}

 }
 
 //-----------------------------------------------------------------------------
 // "clicked" for Cancel-button
 //-----------------------------------------------------------------------------
 
 }
 
 //-----------------------------------------------------------------------------
 // "clicked" for Cancel-button
 //-----------------------------------------------------------------------------
 

-static
-void gtk_filedialog_cancel_callback( GtkWidget *WXUNUSED(w), wxFileDialog *dialog )
+extern "C"

 {
 {

-    if (g_isIdle) wxapp_install_idle_handler();

 
 

+static void
+gtk_filedialog_cancel_callback(GtkWidget * WXUNUSED(w), wxFileDialog *dialog)
+{

     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);

-    event.SetEventObject( dialog );
-    dialog->GetEventHandler()->ProcessEvent( event );
+    event.SetEventObject(dialog);
+    dialog->HandleWindowEvent(event);
+}
+
+static void gtk_filedialog_response_callback(GtkWidget *w,
+                                             gint response,
+                                             wxFileDialog *dialog)
+{
+    if (response == GTK_RESPONSE_ACCEPT)
+        gtk_filedialog_ok_callback(w, dialog);
+    else    // GTK_RESPONSE_CANCEL or GTK_RESPONSE_NONE
+        gtk_filedialog_cancel_callback(w, dialog);
+}
+
+static void gtk_filedialog_update_preview_callback(GtkFileChooser *chooser,
+                                                   gpointer user_data)
+{
+    GtkWidget *preview = GTK_WIDGET(user_data);
+
+    wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
+
+    if ( !filename )
+        return;
+
+    GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
+    gboolean have_preview = pixbuf != NULL;
+
+    gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
+    if ( pixbuf )
+        g_object_unref (pixbuf);
+
+    gtk_file_chooser_set_preview_widget_active(chooser, have_preview);

 }
 
 }
 

+} // extern "C"
+

 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------

-// wxFileDialog
+// "size_request" from m_extraControl

 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 

-IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxDialog)
+extern "C" {
+static void extra_widget_size_request(GtkWidget*, GtkRequisition* req, wxWindow* win)
+{
+    // allow dialog to be resized smaller horizontally
+    req->width = win->GetMinWidth();
+}
+}

 
 

-wxFileDialog::wxFileDialog( wxWindow *parent, const wxString& message,
-                            const wxString& defaultDir, const wxString& defaultFileName,
-                            const wxString& wildCard,
-                            long style, const wxPoint& pos )
+void wxFileDialog::AddChildGTK(wxWindowGTK* child)

 {
 {

-    m_needParent = FALSE;
+    g_signal_connect_after(child->m_widget, "size_request",
+        G_CALLBACK(extra_widget_size_request), child);
+    gtk_file_chooser_set_extra_widget(
+        GTK_FILE_CHOOSER(m_widget), child->m_widget);
+}

 
 

-    if (!PreCreation( parent, pos, wxDefaultSize ) ||
-        !CreateBase( parent, -1, pos, wxDefaultSize, style | wxDIALOG_MODAL, wxDefaultValidator, wxT("filedialog") ))
+//-----------------------------------------------------------------------------
+// wxFileDialog
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxFileDialogBase)
+
+BEGIN_EVENT_TABLE(wxFileDialog,wxFileDialogBase)
+    EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
+    EVT_SIZE(wxFileDialog::OnSize)
+END_EVENT_TABLE()
+
+wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
+                           const wxString& defaultDir,
+                           const wxString& defaultFileName,
+                           const wxString& wildCard,
+                           long style, const wxPoint& pos,
+                           const wxSize& sz,
+                           const wxString& name)
+    : wxFileDialogBase()
+{
+    parent = GetParentForModalDialog(parent);
+
+    if (!wxFileDialogBase::Create(parent, message, defaultDir, defaultFileName,
+                                  wildCard, style, pos, sz, name))

     {
     {

-        wxFAIL_MSG( wxT("wxXX creation failed") );

         return;
     }
 
         return;
     }
 

-    m_message = message;
-    m_path = wxT("");
-    m_fileName = defaultFileName;
-    m_dir = defaultDir;
-    m_wildCard = wildCard;
-    m_dialogStyle = style;
-    m_filterIndex = 1;
+    if (!PreCreation(parent, pos, wxDefaultSize) ||
+        !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
+                wxDefaultValidator, wxT("filedialog")))
+    {
+        wxFAIL_MSG( wxT("wxFileDialog creation failed") );
+        return;
+    }
+
+    GtkFileChooserAction gtk_action;
+    GtkWindow* gtk_parent = NULL;
+    if (parent)
+        gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
+
+    const gchar* ok_btn_stock;
+    if ( style & wxFD_SAVE )
+    {
+        gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
+        ok_btn_stock = GTK_STOCK_SAVE;
+    }
+    else
+    {
+        gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
+        ok_btn_stock = GTK_STOCK_OPEN;
+    }
+
+    m_widget = gtk_file_chooser_dialog_new(
+                   wxGTK_CONV(m_message),
+                   gtk_parent,
+                   gtk_action,
+                   GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
+                   ok_btn_stock, GTK_RESPONSE_ACCEPT,
+                   NULL);
+    g_object_ref(m_widget);
+    GtkFileChooser* file_chooser = GTK_FILE_CHOOSER(m_widget);
+
+    m_fc.SetWidget(file_chooser);
+
+    gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
+
+    if ( style & wxFD_MULTIPLE )
+        gtk_file_chooser_set_select_multiple(file_chooser, true);
+
+    // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically
+    // destroys the dialog when the user press ESC on the dialog: in that case
+    // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
+    // errors...
+    g_signal_connect(m_widget,
+                    "delete_event",
+                    G_CALLBACK (gtk_widget_hide_on_delete),
+                    this);
+
+    // local-only property could be set to false to allow non-local files to be
+    // loaded. In that case get/set_uri(s) should be used instead of
+    // get/set_filename(s) everywhere and the GtkFileChooserDialog should
+    // probably also be created with a backend, e.g "gnome-vfs", "default", ...
+    // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
+    // as the default - true:
+    // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
+
+    g_signal_connect (m_widget, "response",
+        G_CALLBACK (gtk_filedialog_response_callback), this);
+
+    SetWildcard(wildCard);
+
+    // if defaultDir is specified it should contain the directory and
+    // defaultFileName should contain the default name of the file, however if
+    // directory is not given, defaultFileName contains both
+    wxFileName fn;
+    if ( defaultDir.empty() )
+        fn.Assign(defaultFileName);
+    else if ( !defaultFileName.empty() )
+        fn.Assign(defaultDir, defaultFileName);
+    else
+        fn.AssignDir(defaultDir);
+
+    // set the initial file name and/or directory
+    fn.MakeAbsolute(); // GTK+ needs absolute path
+    const wxString dir = fn.GetPath();
+    if ( !dir.empty() )
+    {
+        gtk_file_chooser_set_current_folder(file_chooser, dir.fn_str());
+    }

 
 

-    m_widget = gtk_file_selection_new( m_message.mbc_str() );
+    const wxString fname = fn.GetFullName();
+    if ( style & wxFD_SAVE )
+    {
+        if ( !fname.empty() )
+        {
+            gtk_file_chooser_set_current_name(file_chooser, fname.fn_str());
+        }

 
 

-    int x = (gdk_screen_width () - 400) / 2;
-    int y = (gdk_screen_height () - 400) / 2;
-    gtk_widget_set_uposition( m_widget, x, y );
+#if GTK_CHECK_VERSION(2,7,3)
+        if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
+            gtk_file_chooser_set_do_overwrite_confirmation(file_chooser, true);
+#endif
+    }
+    else // wxFD_OPEN
+    {
+        if ( !fname.empty() )
+        {
+            gtk_file_chooser_set_filename(file_chooser,
+                                          fn.GetFullPath().fn_str());
+        }
+    }

 
 

-    GtkFileSelection *sel = GTK_FILE_SELECTION(m_widget);
-    gtk_file_selection_hide_fileop_buttons( sel ); // they don't work anyway
+    if ( style & wxFD_PREVIEW )
+    {
+        GtkWidget *previewImage = gtk_image_new();

 
 

-    m_path.Append(m_dir);
-    if( ! m_path.IsEmpty() && m_path.Last()!=wxT('/') )
-        m_path.Append('/');
-    m_path.Append(m_fileName);
+        gtk_file_chooser_set_preview_widget(file_chooser, previewImage);
+        g_signal_connect(m_widget, "update-preview",
+                         G_CALLBACK(gtk_filedialog_update_preview_callback),
+                         previewImage);
+    }
+}

 
 

-    if(m_path.Length()>1) gtk_file_selection_set_filename(sel,m_path.mbc_str());
+wxFileDialog::~wxFileDialog()
+{
+    if (m_extraControl)
+    {
+        // get chooser to drop its reference right now, allowing wxWindow dtor
+        // to verify that ref count drops to zero
+        gtk_file_chooser_set_extra_widget(
+            GTK_FILE_CHOOSER(m_widget), NULL);
+    }
+}

 
 

-    gtk_signal_connect( GTK_OBJECT(sel->ok_button), "clicked",
-      GTK_SIGNAL_FUNC(gtk_filedialog_ok_callback), (gpointer*)this );
+void wxFileDialog::OnFakeOk(wxCommandEvent& WXUNUSED(event))
+{
+    EndDialog(wxID_OK);
+}

 
 

-    // strange way to internationalize
-    gtk_label_set( GTK_LABEL( GTK_BUTTON(sel->ok_button)->child ), wxConvCurrent->cWX2MB(_("OK")) );
+int wxFileDialog::ShowModal()
+{
+    CreateExtraControl();

 
 

-    gtk_signal_connect( GTK_OBJECT(sel->cancel_button), "clicked",
-      GTK_SIGNAL_FUNC(gtk_filedialog_cancel_callback), (gpointer*)this );
+    return wxDialog::ShowModal();
+}

 
 

-    // strange way to internationalize
-    gtk_label_set( GTK_LABEL( GTK_BUTTON(sel->cancel_button)->child ), wxConvCurrent->cWX2MB(_("Cancel")) );
+void wxFileDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y), 
+                             int WXUNUSED(width), int WXUNUSED(height), 
+                             int WXUNUSED(sizeFlags))
+{
+}

 
 

-    gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
-        GTK_SIGNAL_FUNC(gtk_filedialog_delete_callback), (gpointer)this );
+void wxFileDialog::OnSize(wxSizeEvent&)
+{
+    // avoid calling DoLayout(), which will set the (wrong) size of
+    // m_extraControl, its size is managed by GtkFileChooser

 }
 
 }
 

-void wxFileDialog::SetPath(const wxString& path)
+wxString wxFileDialog::GetPath() const

 {
 {

-    // not only set the full path but also update filename and dir
-    m_path = path;
-    if ( !!path )
+    wxFileName fn = m_fc.GetPath();
+    
+    if (HasFdFlag(wxFD_SAVE))

     {
     {

-        wxString ext;
-        wxSplitPath(path, &m_dir, &m_fileName, &ext);
-        if (!ext.IsEmpty())
+        // add extension
+        if (!fn.HasExt())

         {
         {

-            m_fileName += wxT(".");
-            m_fileName += ext;
+           wxFileName wildcard( "/dummy", m_fc.GetCurrentWildCard() );
+           wxString ext = wildcard.GetExt();
+           if (!ext.empty() && (ext.Find('?') == wxNOT_FOUND) && (ext.Find('*') == wxNOT_FOUND))
+               fn.SetExt( ext );

         }
     }
         }
     }

+
+    return fn.GetFullPath();
+}
+
+void wxFileDialog::GetFilenames(wxArrayString& files) const
+{
+    m_fc.GetFilenames( files );
+}
+
+void wxFileDialog::GetPaths(wxArrayString& paths) const
+{
+    m_fc.GetPaths( paths );
+}
+
+void wxFileDialog::SetMessage(const wxString& message)
+{
+    m_message = message;
+    SetTitle(message);
+}
+
+void wxFileDialog::SetPath(const wxString& path)
+{
+    m_fc.SetPath( path );
+}
+
+void wxFileDialog::SetDirectory(const wxString& dir)
+{
+    m_fc.SetDirectory( dir );
+}
+
+wxString wxFileDialog::GetDirectory() const
+{
+    return m_fc.GetDirectory();
+}
+
+void wxFileDialog::SetFilename(const wxString& name)
+{
+    if (HasFdFlag(wxFD_SAVE))
+        gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
+    else
+        SetPath(wxFileName(GetDirectory(), name).GetFullPath());
+}
+
+wxString wxFileDialog::GetFilename() const
+{
+    return m_fc.GetFilename();
+}
+
+void wxFileDialog::SetWildcard(const wxString& wildCard)
+{
+    m_fc.SetWildcard( wildCard );
+}
+
+void wxFileDialog::SetFilterIndex(int filterIndex)
+{
+
+    m_fc.SetFilterIndex( filterIndex);
+}
+
+int wxFileDialog::GetFilterIndex() const
+{
+    return m_fc.GetFilterIndex();

 }
 
 }
 

+#endif // wxUSE_FILEDLG