inkscape/src/file.cpp

	file.cpp revision 3caca4f8381f7ae35678d16074c2414c02a0c0ff
#define __SP_FILE_C__

/*
 * File/Print operations
 *
 * Authors:
 *   Lauris Kaplinski <lauris@kaplinski.com>
 *   Chema Celorio <chema@celorio.com>
 *   bulia byak <buliabyak@users.sf.net>
 *
 * Copyright (C) 2006 Johan Engelen <johan@shouraizou.nl>
 * Copyright (C) 1999-2005 Authors
 * Copyright (C) 2004 David Turner
 * Copyright (C) 2001-2002 Ximian, Inc.
 *
 * Released under GNU GPL, read the file 'COPYING' for more information
 */

/**
 * Note: This file needs to be cleaned up extensively.
 * What it probably needs is to have one .h file for
 * the API, and two or more .cpp files for the implementations.
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <glib/gmem.h>
#include <libnr/nr-pixops.h>

#include "document-private.h"
#include "selection-chemistry.h"
#include "ui/view/view-widget.h"
#include "dir-util.h"
#include "helper/png-write.h"
#include "dialogs/export.h"
#include <glibmm/i18n.h>
#include "inkscape.h"
#include "desktop.h"
#include "selection.h"
#include "interface.h"
#include "style.h"
#include "print.h"
#include "file.h"
#include "message.h"
#include "message-stack.h"
#include "ui/dialog/filedialog.h"
#include "prefs-utils.h"
#include "path-prefix.h"

#include "sp-namedview.h"
#include "desktop-handles.h"

#include "extension/db.h"
#include "extension/input.h"
#include "extension/output.h"
/* #include "extension/menu.h"  */
#include "extension/system.h"

#include "io/sys.h"
#include "application/application.h"
#include "application/editor.h"
#include "inkscape.h"
#include "uri.h"

#ifdef WITH_INKBOARD
#include "jabber_whiteboard/session-manager.h"
#endif


//#define INK_DUMP_FILENAME_CONV 1
#undef INK_DUMP_FILENAME_CONV

//#define INK_DUMP_FOPEN 1
#undef INK_DUMP_FOPEN

void dump_str(gchar const *str, gchar const *prefix);
void dump_ustr(Glib::ustring const &ustr);


/*######################
## N E W
######################*/

/**
 * Create a blank document and add it to the desktop
 */
SPDesktop*
sp_file_new(const Glib::ustring &templ)
{
    char *templName = NULL;
    if (templ.size()>0)
        templName = (char *)templ.c_str();
    SPDocument *doc = sp_document_new(templName, TRUE, true);
    g_return_val_if_fail(doc != NULL, NULL);

    SPDesktop *dt;
    if (Inkscape::NSApplication::Application::getNewGui())
    {
        dt = Inkscape::NSApplication::Editor::createDesktop (doc);
    } else {
        SPViewWidget *dtw = sp_desktop_widget_new(sp_document_namedview(doc, NULL));
        g_return_val_if_fail(dtw != NULL, NULL);
        sp_document_unref(doc);

        sp_create_window(dtw, TRUE);
        dt = static_cast<SPDesktop*>(dtw->view);
        sp_namedview_window_from_document(dt);
        sp_namedview_update_layers_from_document(dt);
    }
    return dt;
}

SPDesktop*
sp_file_new_default()
{
    std::list<gchar *> sources;
    sources.push_back( profile_path("templates") ); // first try user's local dir
    sources.push_back( g_strdup(INKSCAPE_TEMPLATESDIR) ); // then the system templates dir

    while (!sources.empty()) {
        gchar *dirname = sources.front();
        if ( Inkscape::IO::file_test( dirname, (GFileTest)(G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR) ) ) {

            // TRANSLATORS: default.svg is localizable - this is the name of the default document
            //  template. This way you can localize the default pagesize, translate the name of
            //  the default layer, etc. If you wish to localize this file, please create a
            //  localized share/templates/default.xx.svg file, where xx is your language code.
            char *default_template = g_build_filename(dirname, _("default.svg"), NULL);
            if (Inkscape::IO::file_test(default_template, G_FILE_TEST_IS_REGULAR)) {
                return sp_file_new(default_template);
            }
        }
        g_free(dirname);
        sources.pop_front();
    }

    return sp_file_new("");
}


/*######################
## D E L E T E
######################*/

/**
 *  Perform document closures preceding an exit()
 */
void
sp_file_exit()
{
    sp_ui_close_all();
    // no need to call inkscape_exit here; last document being closed will take care of that
}


/*######################
## O P E N
######################*/

/**
 *  Open a file, add the document to the desktop
 *
 *  \param replace_empty if true, and the current desktop is empty, this document
 *  will replace the empty one.
 */
bool
sp_file_open(const Glib::ustring &uri,
             Inkscape::Extension::Extension *key,
             bool add_to_recent, bool replace_empty)
{
    SPDocument *doc = NULL;
    try {
        doc = Inkscape::Extension::open(key, uri.c_str());
    } catch (Inkscape::Extension::Input::no_extension_found &e) {
        doc = NULL;
    } catch (Inkscape::Extension::Input::open_failed &e) {
        doc = NULL;
    }

    if (doc) {
        SPDesktop *desktop = SP_ACTIVE_DESKTOP;
        SPDocument *existing = desktop ? sp_desktop_document(desktop) : NULL;

        if (existing && existing->virgin && replace_empty) {
            // If the current desktop is empty, open the document there
            sp_document_ensure_up_to_date (doc);
            desktop->change_document(doc);
            sp_document_resized_signal_emit (doc, sp_document_width(doc), sp_document_height(doc));
        } else {
            if (!Inkscape::NSApplication::Application::getNewGui()) {
                // create a whole new desktop and window
                SPViewWidget *dtw = sp_desktop_widget_new(sp_document_namedview(doc, NULL));
                sp_create_window(dtw, TRUE);
                desktop = static_cast<SPDesktop*>(dtw->view);
            } else {
                desktop = Inkscape::NSApplication::Editor::createDesktop (doc);
            }
        }

        doc->virgin = FALSE;
        // everyone who cares now has a reference, get rid of ours
        sp_document_unref(doc);
        // resize the window to match the document properties
        sp_namedview_window_from_document(desktop);
        sp_namedview_update_layers_from_document(desktop);

        if (add_to_recent) {
            prefs_set_recent_file(SP_DOCUMENT_URI(doc), SP_DOCUMENT_NAME(doc));
        }

        return TRUE;
    } else {
        gchar *safeUri = Inkscape::IO::sanitizeString(uri.c_str());
        gchar *text = g_strdup_printf(_("Failed to load the requested file %s"), safeUri);
        sp_ui_error_dialog(text);
        g_free(text);
        g_free(safeUri);
        return FALSE;
    }
}

/**
 *  Handle prompting user for "do you want to revert"?  Revert on "OK"
 */
void
sp_file_revert_dialog()
{
    SPDesktop  *desktop = SP_ACTIVE_DESKTOP;
    g_assert(desktop != NULL);

    SPDocument *doc = sp_desktop_document(desktop);
    g_assert(doc != NULL);

    Inkscape::XML::Node     *repr = sp_document_repr_root(doc);
    g_assert(repr != NULL);

    gchar const *uri = doc->uri;
    if (!uri) {
        desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Document not saved yet.  Cannot revert."));
        return;
    }

    bool do_revert = true;
    if (repr->attribute("sodipodi:modified") != NULL) {
        gchar *text = g_strdup_printf(_("Changes will be lost!  Are you sure you want to reload document %s?"), uri);

        bool response = desktop->warnDialog (text);
        g_free(text);

        if (!response) {
            do_revert = false;
        }
    }

    bool reverted;
    if (do_revert) {
        // Allow overwriting of current document.
        doc->virgin = TRUE;
        reverted = sp_file_open(uri,NULL);
    } else {
        reverted = false;
    }

    if (reverted) {
        desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Document reverted."));
    } else {
        desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Document not reverted."));
    }
}

void dump_str(gchar const *str, gchar const *prefix)
{
    Glib::ustring tmp;
    tmp = prefix;
    tmp += " [";
    size_t const total = strlen(str);
    for (unsigned i = 0; i < total; i++) {
        gchar *const tmp2 = g_strdup_printf(" %02x", (0x0ff & str[i]));
        tmp += tmp2;
        g_free(tmp2);
    }

    tmp += "]";
    g_message(tmp.c_str());
}

void dump_ustr(Glib::ustring const &ustr)
{
    char const *cstr = ustr.c_str();
    char const *data = ustr.data();
    Glib::ustring::size_type const byteLen = ustr.bytes();
    Glib::ustring::size_type const dataLen = ustr.length();
    Glib::ustring::size_type const cstrLen = strlen(cstr);

    g_message("   size: %lu\n   length: %lu\n   bytes: %lu\n    clen: %lu",
              gulong(ustr.size()), gulong(dataLen), gulong(byteLen), gulong(cstrLen) );
    g_message( "  ASCII? %s", (ustr.is_ascii() ? "yes":"no") );
    g_message( "  UTF-8? %s", (ustr.validate() ? "yes":"no") );

    try {
        Glib::ustring tmp;
        for (Glib::ustring::size_type i = 0; i < ustr.bytes(); i++) {
            tmp = "    ";
            if (i < dataLen) {
                Glib::ustring::value_type val = ustr.at(i);
                gchar* tmp2 = g_strdup_printf( (((val & 0xff00) == 0) ? "  %02x" : "%04x"), val );
                tmp += tmp2;
                g_free( tmp2 );
            } else {
                tmp += "    ";
            }

            if (i < byteLen) {
                int val = (0x0ff & data[i]);
                gchar *tmp2 = g_strdup_printf("    %02x", val);
                tmp += tmp2;
                g_free( tmp2 );
                if ( val > 32 && val < 127 ) {
                    tmp2 = g_strdup_printf( "   '%c'", (gchar)val );
                    tmp += tmp2;
                    g_free( tmp2 );
                } else {
                    tmp += "    . ";
                }
            } else {
                tmp += "       ";
            }

            if ( i < cstrLen ) {
                int val = (0x0ff & cstr[i]);
                gchar* tmp2 = g_strdup_printf("    %02x", val);
                tmp += tmp2;
                g_free(tmp2);
                if ( val > 32 && val < 127 ) {
                    tmp2 = g_strdup_printf("   '%c'", (gchar) val);
                    tmp += tmp2;
                    g_free( tmp2 );
                } else {
                    tmp += "    . ";
                }
            } else {
                tmp += "            ";
            }

            g_message( tmp.c_str() );
        }
    } catch (...) {
        g_message("XXXXXXXXXXXXXXXXXX Exception" );
    }
    g_message("---------------");
}

static Inkscape::UI::Dialog::FileOpenDialog *openDialogInstance = NULL;

/**
 *  Display an file Open selector.  Open a document if OK is pressed.
 *  Can select single or multiple files for opening.
 */
void
sp_file_open_dialog(gpointer object, gpointer data)
{

    //# Get the current directory for finding files
    Glib::ustring open_path;
    char *attr = (char *)prefs_get_string_attribute("dialogs.open", "path");
    if (attr)
        open_path = attr;


    //# Test if the open_path directory exists
    if (!Inkscape::IO::file_test(open_path.c_str(),
              (GFileTest)(G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)))
        open_path = "";

    //# If no open path, default to our home directory
    if (open_path.size() < 1)
        {
        open_path = g_get_home_dir();
        open_path.append(G_DIR_SEPARATOR_S);
        }

    //# Create a dialog if we don't already have one
    if (!openDialogInstance) {
        openDialogInstance =
              Inkscape::UI::Dialog::FileOpenDialog::create(
                 open_path,
                 Inkscape::UI::Dialog::SVG_TYPES,
                 (char const *)_("Select file to open"));
    }

    //# Show the dialog
    bool const success = openDialogInstance->show();
    if (!success)
        return;

    //# User selected something.  Get name and type
    Glib::ustring fileName = openDialogInstance->getFilename();
    Inkscape::Extension::Extension *selection =
            openDialogInstance->getSelectionType();

    //# Code to check & open iff multiple files.
    std::vector<Glib::ustring> flist=openDialogInstance->getFilenames();

    //# Iterate through filenames if more than 1
    if (flist.size() > 1)
        {
        for (unsigned int i=1 ; i<flist.size() ; i++)
            {
            Glib::ustring fName = flist[i];

            if (Glib::file_test(fileName, Glib::FILE_TEST_IS_DIR)) {
            Glib::ustring newFileName = Glib::filename_to_utf8(fName);
            if ( newFileName.size() > 0 )
                fName = newFileName;
            else
                g_warning( "ERROR CONVERTING OPEN FILENAME TO UTF-8" );

#ifdef INK_DUMP_FILENAME_CONV
            g_message("Opening File %s\n",fileName);
#endif
            sp_file_open(fileName, selection);
            }
        }
        return;
    }


    if (fileName.size() > 0) {

        Glib::ustring newFileName = Glib::filename_to_utf8(fileName);

        if ( newFileName.size() > 0)
            fileName = newFileName;
        else
            g_warning( "ERROR CONVERTING OPEN FILENAME TO UTF-8" );

        open_path = fileName;
        open_path.append(G_DIR_SEPARATOR_S);
        prefs_set_string_attribute("dialogs.open", "path", open_path.c_str());

        sp_file_open(fileName, selection);
    }

    return;
}


/*######################
## V A C U U M
######################*/

/**
 * Remove unreferenced defs from the defs section of the document.
 */


void
sp_file_vacuum()
{
    SPDocument *doc = SP_ACTIVE_DOCUMENT;

    unsigned int diff = vacuum_document (doc);

    sp_document_done(doc, SP_VERB_FILE_VACUUM,
                     _("Vacuum &lt;defs&gt;"));

    SPDesktop *dt = SP_ACTIVE_DESKTOP;
    if (diff > 0) {
        dt->messageStack()->flashF(Inkscape::NORMAL_MESSAGE,
                ngettext("Removed <b>%i</b> unused definition in &lt;defs&gt;.",
                         "Removed <b>%i</b> unused definitions in &lt;defs&gt;.",
                         diff),
                diff);
    } else {
        dt->messageStack()->flash(Inkscape::NORMAL_MESSAGE,  _("No unused definitions in &lt;defs&gt;."));
    }
}


/*######################
## S A V E
######################*/

/**
 * This 'save' function called by the others below
 *
 * \param    official  whether to set :output_module and :modified in the
 *                     document; is true for normal save, false for temporary saves
 */
static bool
file_save(SPDocument *doc, const Glib::ustring &uri,
          Inkscape::Extension::Extension *key, bool saveas, bool official)
{
    if (!doc || uri.size()<1) //Safety check
        return false;

    try {
        Inkscape::Extension::save(key, doc, uri.c_str(),
                 saveas && prefs_get_int_attribute("dialogs.save_as", "append_extension", 1),
                 saveas, official);
    } catch (Inkscape::Extension::Output::no_extension_found &e) {
        gchar *safeUri = Inkscape::IO::sanitizeString(uri.c_str());
        gchar *text = g_strdup_printf(_("No Inkscape extension found to save document (%s).  This may have been caused by an unknown filename extension."), safeUri);
        SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Document not saved."));
        sp_ui_error_dialog(text);
        g_free(text);
        g_free(safeUri);
        return FALSE;
    } catch (Inkscape::Extension::Output::save_failed &e) {
        gchar *safeUri = Inkscape::IO::sanitizeString(uri.c_str());
        gchar *text = g_strdup_printf(_("File %s could not be saved."), safeUri);
        SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Document not saved."));
        sp_ui_error_dialog(text);
        g_free(text);
        g_free(safeUri);
        return FALSE;
    } catch (Inkscape::Extension::Output::no_overwrite &e) {
        return sp_file_save_dialog(doc);
    }

    SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Document saved."));
    return true;
}


static Inkscape::UI::Dialog::FileSaveDialog *saveDialogInstance = NULL;

/**
 *  Display a SaveAs dialog.  Save the document if OK pressed.
 *
 * \param    ascopy  (optional) wether to set the documents->uri to the new filename or not
 */
bool
sp_file_save_dialog(SPDocument *doc, bool is_copy)
{

    Inkscape::XML::Node *repr = sp_document_repr_root(doc);

    Inkscape::Extension::Output *extension;

    //# Get the default extension name
    Glib::ustring default_extension;
    char *attr = (char *)repr->attribute("inkscape:output_extension");
    if (!attr)
        attr = (char *)prefs_get_string_attribute("dialogs.save_as", "default");
    if (attr)
        default_extension = attr;
    //g_message("%s: extension name: '%s'", __FUNCTION__, default_extension);

    Glib::ustring save_path;
    Glib::ustring save_loc;

    if (doc->uri == NULL) {
        char formatBuf[256];
        int i = 1;

        Glib::ustring filename_extension = ".svg";
        extension = dynamic_cast<Inkscape::Extension::Output *>
              (Inkscape::Extension::db.get(default_extension.c_str()));
        //g_warning("%s: extension ptr: 0x%x", __FUNCTION__, (unsigned int)extension);
        if (extension)
            filename_extension = extension->get_extension();

        attr = (char *)prefs_get_string_attribute("dialogs.save_as", "path");
        if (attr)
            save_path = attr;

        if (!Inkscape::IO::file_test(save_path.c_str(),
              (GFileTest)(G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)))
            save_path = "";

        if (save_path.size()<1)
            save_path = g_get_home_dir();

        save_loc = save_path;
        save_loc.append(G_DIR_SEPARATOR_S);
        snprintf(formatBuf, 255, _("drawing%s"), filename_extension.c_str());
        save_loc.append(formatBuf);

        while (Inkscape::IO::file_test(save_loc.c_str(), G_FILE_TEST_EXISTS)) {
            save_loc = save_path;
            save_loc.append(G_DIR_SEPARATOR_S);
            snprintf(formatBuf, 255, _("drawing-%d%s"), i++, filename_extension.c_str());
            save_loc.append(formatBuf);
        }
    } else {
        save_loc = Glib::build_filename(Glib::path_get_dirname(doc->uri),
                                        Glib::path_get_basename(doc->uri));
    }

    // convert save_loc from utf-8 to locale
    // is this needed any more, now that everything is handled in
    // Inkscape::IO?
    Glib::ustring save_loc_local = Glib::filename_from_utf8(save_loc);

    if ( save_loc_local.size() > 0)
        save_loc = save_loc_local;

    //# Show the SaveAs dialog
    char const * dialog_title;
    if (is_copy) {
        dialog_title = (char const *) _("Select file to save a copy to");
    } else {
        dialog_title = (char const *) _("Select file to save to");
    }
    if (!saveDialogInstance)
        saveDialogInstance =
             Inkscape::UI::Dialog::FileSaveDialog::create(
                 save_loc,
                 Inkscape::UI::Dialog::SVG_TYPES,
                 (char const *) _("Select file to save to"),
                 default_extension
            );
    else
        saveDialogInstance->change_path(save_loc);
    saveDialogInstance->change_title(dialog_title);

    bool success = saveDialogInstance->show();
    if (!success)
        return success;

    Glib::ustring fileName = saveDialogInstance->getFilename();

    Inkscape::Extension::Extension *selectionType =
        saveDialogInstance->getSelectionType();


    if (fileName.size() > 0) {
        Glib::ustring newFileName = Glib::filename_to_utf8(fileName);

        if ( newFileName.size()>0 )
            fileName = newFileName;
        else
            g_warning( "Error converting save filename to UTF-8." );

        success = file_save(doc, fileName, selectionType, TRUE, !is_copy);

        if (success)
            prefs_set_recent_file(SP_DOCUMENT_URI(doc), SP_DOCUMENT_NAME(doc));

        save_path = Glib::path_get_dirname(fileName);
        prefs_set_string_attribute("dialogs.save_as", "path", save_path.c_str());

        return success;
    }


    return false;
}


/**
 * Save a document, displaying a SaveAs dialog if necessary.
 */
bool
sp_file_save_document(SPDocument *doc)
{
    bool success = true;

    Inkscape::XML::Node *repr = sp_document_repr_root(doc);

    gchar const *fn = repr->attribute("sodipodi:modified");
    if (fn != NULL) {
        if ( doc->uri == NULL
            || repr->attribute("inkscape:output_extension") == NULL )
        {
            return sp_file_save_dialog(doc, FALSE);
        } else {
            fn = g_strdup(doc->uri);
            gchar const *ext = repr->attribute("inkscape:output_extension");
            success = file_save(doc, fn, Inkscape::Extension::db.get(ext), FALSE, TRUE);
            g_free((void *) fn);
        }
    } else {
        SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No changes need to be saved."));
        success = TRUE;
    }

    return success;
}


/**
 * Save a document.
 */
bool
sp_file_save(gpointer object, gpointer data)
{
    if (!SP_ACTIVE_DOCUMENT)
        return false;

    SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Saving document..."));

    sp_namedview_document_from_window(SP_ACTIVE_DESKTOP);
    return sp_file_save_document(SP_ACTIVE_DOCUMENT);
}


/**
 *  Save a document, always displaying the SaveAs dialog.
 */
bool
sp_file_save_as(gpointer object, gpointer data)
{
    if (!SP_ACTIVE_DOCUMENT)
        return false;
    sp_namedview_document_from_window(SP_ACTIVE_DESKTOP);
    return sp_file_save_dialog(SP_ACTIVE_DOCUMENT, FALSE);
}


/**
 *  Save a copy of a document, always displaying a sort of SaveAs dialog.
 */
bool
sp_file_save_a_copy(gpointer object, gpointer data)
{
    if (!SP_ACTIVE_DOCUMENT)
        return false;
    sp_namedview_document_from_window(SP_ACTIVE_DESKTOP);
    return sp_file_save_dialog(SP_ACTIVE_DOCUMENT, TRUE);
}


/*######################
## I M P O R T
######################*/

/**
 *  Import a resource.  Called by sp_file_import()
 */
void
file_import(SPDocument *in_doc, const Glib::ustring &uri,
               Inkscape::Extension::Extension *key)
{
    SPDesktop *desktop = SP_ACTIVE_DESKTOP;

    //DEBUG_MESSAGE( fileImport, "file_import( in_doc:%p uri:[%s], key:%p", in_doc, uri, key );
    SPDocument *doc;
    try {
        doc = Inkscape::Extension::open(key, uri.c_str());
    } catch (Inkscape::Extension::Input::no_extension_found &e) {
        doc = NULL;
    } catch (Inkscape::Extension::Input::open_failed &e) {
        doc = NULL;
    }

    if (doc != NULL) {
        // the import extension has passed us a document, now we need to embed it into our document
        if ( 0 ) {
//            const gchar *docbase = (sp_repr_document_root( sp_repr_document( repr ))->attribute("sodipodi:docbase" );
            g_message(" settings  uri  [%s]", doc->uri );
            g_message("           base [%s]", doc->base );
            g_message("           name [%s]", doc->name );
            Inkscape::IO::fixupHrefs( doc, doc->base, TRUE );
            g_message("        mid-fixup");
            Inkscape::IO::fixupHrefs( doc, in_doc->base, TRUE );
        }

        // move imported defs to our document's defs
        SPObject *in_defs = SP_DOCUMENT_DEFS(in_doc);
        SPObject *defs = SP_DOCUMENT_DEFS(doc);
        Inkscape::XML::Node *last_def = SP_OBJECT_REPR(in_defs)->lastChild();
        for (SPObject *child = sp_object_first_child(defs);
             child != NULL; child = SP_OBJECT_NEXT(child))
        {
            // FIXME: in case of id conflict, newly added thing will be re-ided and thus likely break a reference to it from imported stuff
            SP_OBJECT_REPR(in_defs)->addChild(SP_OBJECT_REPR(child)->duplicate(), last_def);
        }

        guint items_count = 0;
        for (SPObject *child = sp_object_first_child(SP_DOCUMENT_ROOT(doc));
             child != NULL; child = SP_OBJECT_NEXT(child)) {
            if (SP_IS_ITEM(child))
                items_count ++;
        }
        SPCSSAttr *style = sp_css_attr_from_object (SP_DOCUMENT_ROOT (doc));

        SPObject *new_obj = NULL;

        if ((style && style->firstChild()) || items_count > 1) {
            // create group
            Inkscape::XML::Document *xml_doc = sp_document_repr_doc(in_doc);
            Inkscape::XML::Node *newgroup = xml_doc->createElement("svg:g");
            sp_repr_css_set (newgroup, style, "style");

            for (SPObject *child = sp_object_first_child(SP_DOCUMENT_ROOT(doc)); child != NULL; child = SP_OBJECT_NEXT(child) ) {
                if (SP_IS_ITEM(child)) {
                    Inkscape::XML::Node *newchild = SP_OBJECT_REPR(child)->duplicate();

                    // convert layers to groups; FIXME: add "preserve layers" mode where each layer
                    // from impot is copied to the same-named layer in host
                    newchild->setAttribute("inkscape:groupmode", NULL);

                    newgroup->appendChild(newchild);
                }
            }

            if (desktop) {
                // Add it to the current layer
                new_obj = desktop->currentLayer()->appendChildRepr(newgroup);
            } else {
                // There's no desktop (command line run?)
                // FIXME: For such cases we need a document:: method to return the current layer
                new_obj = SP_DOCUMENT_ROOT(in_doc)->appendChildRepr(newgroup);
            }

            Inkscape::GC::release(newgroup);
        } else {
            // just add one item
            for (SPObject *child = sp_object_first_child(SP_DOCUMENT_ROOT(doc)); child != NULL; child = SP_OBJECT_NEXT(child) ) {
                if (SP_IS_ITEM(child)) {
                    Inkscape::XML::Node *newitem = SP_OBJECT_REPR(child)->duplicate();
                    newitem->setAttribute("inkscape:groupmode", NULL);

                    if (desktop) {
                        // Add it to the current layer
                        new_obj = desktop->currentLayer()->appendChildRepr(newitem);
                    } else {
                        // There's no desktop (command line run?)
                        // FIXME: For such cases we need a document:: method to return the current layer
                        new_obj = SP_DOCUMENT_ROOT(in_doc)->appendChildRepr(newitem);
                    }

                }
            }
        }

        if (style) sp_repr_css_attr_unref (style);

        // select and move the imported item
        if (new_obj && SP_IS_ITEM(new_obj)) {
            Inkscape::Selection *selection = sp_desktop_selection(desktop);
            selection->set(SP_ITEM(new_obj));

            // To move the imported object, we must temporarily set the "transform pattern with
            // object" option.
            {
                int const saved_pref = prefs_get_int_attribute("options.transform", "pattern", 1);
                prefs_set_int_attribute("options.transform", "pattern", 1);
                sp_document_ensure_up_to_date(sp_desktop_document(desktop));
                NR::Point m( desktop->point() - selection->bounds().midpoint() );
                sp_selection_move_relative(selection, m);
                prefs_set_int_attribute("options.transform", "pattern", saved_pref);
            }
        }

        sp_document_unref(doc);
        sp_document_done(in_doc, SP_VERB_FILE_IMPORT,
                         _("Import"));

    } else {
        gchar *text = g_strdup_printf(_("Failed to load the requested file %s"), uri.c_str());
        sp_ui_error_dialog(text);
        g_free(text);
    }

    return;
}


static Inkscape::UI::Dialog::FileOpenDialog *importDialogInstance = NULL;

/**
 *  Display an Open dialog, import a resource if OK pressed.
 */
void
sp_file_import(GtkWidget *widget)
{
    static Glib::ustring import_path;

    SPDocument *doc = SP_ACTIVE_DOCUMENT;
    if (!doc)
        return;

    if (!importDialogInstance) {
        importDialogInstance =
             Inkscape::UI::Dialog::FileOpenDialog::create(
                 import_path,
                 Inkscape::UI::Dialog::IMPORT_TYPES,
                 (char const *)_("Select file to import"));
    }

    bool success = importDialogInstance->show();
    if (!success)
        return;

    //# Get file name and extension type
    Glib::ustring fileName = importDialogInstance->getFilename();
    Inkscape::Extension::Extension *selection =
        importDialogInstance->getSelectionType();


    if (fileName.size() > 0) {

        Glib::ustring newFileName = Glib::filename_to_utf8(fileName);

        if ( newFileName.size() > 0)
            fileName = newFileName;
        else
            g_warning( "ERROR CONVERTING OPEN FILENAME TO UTF-8" );

        import_path = fileName;
        if (import_path.size()>0)
            import_path.append(G_DIR_SEPARATOR_S);

        file_import(doc, fileName, selection);
    }

    return;
}


/*######################
## E X P O R T
######################*/

//#define NEW_EXPORT_DIALOG


#ifdef NEW_EXPORT_DIALOG

static Inkscape::UI::Dialog::FileExportDialog *exportDialogInstance = NULL;

/**
 *  Display an Export dialog, export as the selected type if OK pressed
 */
bool
sp_file_export_dialog(void *widget)
{
    //# temp hack for 'doc' until we can switch to this dialog
    SPDocument *doc = SP_ACTIVE_DOCUMENT;

    Glib::ustring export_path;
    Glib::ustring export_loc;

    Inkscape::XML::Node *repr = sp_document_repr_root(doc);

    Inkscape::Extension::Output *extension;

    //# Get the default extension name
    Glib::ustring default_extension;
    char *attr = (char *)repr->attribute("inkscape:output_extension");
    if (!attr)
        attr = (char *)prefs_get_string_attribute("dialogs.save_as", "default");
    if (attr)
        default_extension = attr;
    //g_message("%s: extension name: '%s'", __FUNCTION__, default_extension);

    if (doc->uri == NULL)
        {
        char formatBuf[256];

        Glib::ustring filename_extension = ".svg";
        extension = dynamic_cast<Inkscape::Extension::Output *>
              (Inkscape::Extension::db.get(default_extension.c_str()));
        //g_warning("%s: extension ptr: 0x%x", __FUNCTION__, (unsigned int)extension);
        if (extension)
            filename_extension = extension->get_extension();

        attr = (char *)prefs_get_string_attribute("dialogs.save_as", "path");
        if (attr)
            export_path = attr;

        if (!Inkscape::IO::file_test(export_path.c_str(),
              (GFileTest)(G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)))
            export_path = "";

        if (export_path.size()<1)
            export_path = g_get_home_dir();

        export_loc = export_path;
        export_loc.append(G_DIR_SEPARATOR_S);
        snprintf(formatBuf, 255, _("drawing%s"), filename_extension.c_str());
        export_loc.append(formatBuf);

        }
    else
        {
        export_path = Glib::path_get_dirname(doc->uri);
        }

    // convert save_loc from utf-8 to locale
    // is this needed any more, now that everything is handled in
    // Inkscape::IO?
    Glib::ustring export_path_local = Glib::filename_from_utf8(export_path);
    if ( export_path_local.size() > 0)
        export_path = export_path_local;

    //# Show the SaveAs dialog
    if (!exportDialogInstance)
        exportDialogInstance =
             Inkscape::UI::Dialog::FileExportDialog::create(
                 export_path,
                 Inkscape::UI::Dialog::EXPORT_TYPES,
                 (char const *) _("Select file to export to"),
                 default_extension
            );

    bool success = exportDialogInstance->show();
    if (!success)
        return success;

    Glib::ustring fileName = exportDialogInstance->getFilename();

    Inkscape::Extension::Extension *selectionType =
        exportDialogInstance->getSelectionType();


    if (fileName.size() > 0) {
        Glib::ustring newFileName = Glib::filename_to_utf8(fileName);

        if ( newFileName.size()>0 )
            fileName = newFileName;
        else
            g_warning( "Error converting save filename to UTF-8." );

        success = file_save(doc, fileName, selectionType, TRUE, FALSE);

        if (success)
            prefs_set_recent_file(SP_DOCUMENT_URI(doc), SP_DOCUMENT_NAME(doc));

        export_path = fileName;
        prefs_set_string_attribute("dialogs.save_as", "path", export_path.c_str());

        return success;
    }


    return false;
}


#else


/**
 *
 */
bool
sp_file_export_dialog(void *widget)
{
    sp_export_dialog();
    return true;
}

#endif

/*######################
## P R I N T
######################*/


/**
 *  Print the current document, if any.
 */
void
sp_file_print()
{
    SPDocument *doc = SP_ACTIVE_DOCUMENT;
    if (doc)
        sp_print_document(doc, FALSE);
}


/**
 *  Print the current document, if any.  Do not use
 *  the machine's print drivers.
 */
void
sp_file_print_direct()
{
    SPDocument *doc = SP_ACTIVE_DOCUMENT;
    if (doc)
        sp_print_document(doc, TRUE);
}


/**
 * Display what the drawing would look like, if
 * printed.
 */
void
sp_file_print_preview(gpointer object, gpointer data)
{

    SPDocument *doc = SP_ACTIVE_DOCUMENT;
    if (doc)
        sp_print_preview_document(doc);

}

void Inkscape::IO::fixupHrefs( SPDocument *doc, const gchar *base, gboolean spns )
{
    //g_message("Inkscape::IO::fixupHrefs( , [%s], )", base );

    if ( 0 ) {
        gchar const* things[] = {
            "data:foo,bar",
            "http://www.google.com/image.png",
            "ftp://ssd.com/doo",
            "/foo/dee/bar.svg",
            "foo.svg",
            "file:/foo/dee/bar.svg",
            "file:///foo/dee/bar.svg",
            "file:foo.svg",
            "/foo/bar\xe1\x84\x92.svg",
            "file:///foo/bar\xe1\x84\x92.svg",
            "file:///foo/bar%e1%84%92.svg",
            "/foo/bar%e1%84%92.svg",
            "bar\xe1\x84\x92.svg",
            "bar%e1%84%92.svg",
            NULL
        };
        g_message("+------");
        for ( int i = 0; things[i]; i++ )
        {
            try
            {
                URI uri(things[i]);
                gboolean isAbs = g_path_is_absolute( things[i] );
                gchar *str = uri.toString();
                g_message( "abs:%d  isRel:%d  scheme:[%s]  path:[%s][%s]   uri[%s] / [%s]", (int)isAbs,
                           (int)uri.isRelative(),
                           uri.getScheme(),
                           uri.getPath(),
                           uri.getOpaque(),
                           things[i],
                           str );
                g_free(str);
            }
            catch ( MalformedURIException err )
            {
                dump_str( things[i], "MalformedURIException" );
                xmlChar *redo = xmlURIEscape((xmlChar const *)things[i]);
                g_message("    gone from [%s] to [%s]", things[i], redo );
                if ( redo == NULL )
                {
                    URI again = URI::fromUtf8( things[i] );
                    gboolean isAbs = g_path_is_absolute( things[i] );
                    gchar *str = again.toString();
                    g_message( "abs:%d  isRel:%d  scheme:[%s]  path:[%s][%s]   uri[%s] / [%s]", (int)isAbs,
                               (int)again.isRelative(),
                               again.getScheme(),
                               again.getPath(),
                               again.getOpaque(),
                               things[i],
                               str );
                    g_free(str);
                    g_message("    ----");
                }
            }
        }
        g_message("+------");
    }

    GSList const *images = sp_document_get_resource_list(doc, "image");
    for (GSList const *l = images; l != NULL; l = l->next) {
        Inkscape::XML::Node *ir = SP_OBJECT_REPR(l->data);

        const gchar *href = ir->attribute("xlink:href");

        // First try to figure out an absolute path to the asset
        //g_message("image href [%s]", href );
        if (spns && !g_path_is_absolute(href)) {
            const gchar *absref = ir->attribute("sodipodi:absref");
            const gchar *base_href = g_build_filename(base, href, NULL);
            //g_message("      absr [%s]", absref );

            if ( absref && Inkscape::IO::file_test(absref, G_FILE_TEST_EXISTS) && !Inkscape::IO::file_test(base_href, G_FILE_TEST_EXISTS))
            {
                // only switch over if the absref is valid while href is not
                href = absref;
                //g_message("     copied absref to href");
            }
        }

        // Once we have an absolute path, convert it relative to the new location
        if (href && g_path_is_absolute(href)) {
            const gchar *relname = sp_relative_path_from_path(href, base);
            //g_message("     setting to [%s]", relname );
            ir->setAttribute("xlink:href", relname);
        }
// TODO next refinement is to make the first choice keeping the relative path as-is if
//      based on the new location it gives us a valid file.
    }
}


/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :