Fix #1740146.

(bzr r3190)

9 files changed, 212 insertions, 121 deletions

diff --git a/src/desktop.cpp b/src/desktop.cpp
index 03373b59e..859e15bd8 100644
--- a/src/desktop.cpp
+++ b/src/desktop.cpp
@@ -1154,7 +1154,7 @@ void SPDesktop::toggleGrid()
     } else {
         //there is no grid present at the moment. add a rectangular grid and make it visible
         Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview);
-        Inkscape::CanvasGrid::writeNewGridToRepr(repr, Inkscape::GRID_RECTANGULAR);
+        Inkscape::CanvasGrid::writeNewGridToRepr(repr, sp_desktop_document(this), Inkscape::GRID_RECTANGULAR);
         grids_visible = true;
         sp_canvas_item_show(SP_CANVAS_ITEM(gridgroup));
     }
diff --git a/src/display/canvas-axonomgrid.cpp b/src/display/canvas-axonomgrid.cpp
index 311c56f44..17fa97281 100644
--- a/src/display/canvas-axonomgrid.cpp
+++ b/src/display/canvas-axonomgrid.cpp
@@ -195,8 +195,8 @@ attach_all (Gtk::Table &table, const Gtk::Widget *arr[], unsigned size, int star
     }
 }
 
-CanvasAxonomGrid::CanvasAxonomGrid (SPNamedView * nv, Inkscape::XML::Node * in_repr)
-    : CanvasGrid(nv, in_repr), table(1, 1)
+CanvasAxonomGrid::CanvasAxonomGrid (SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc)
+    : CanvasGrid(nv, in_repr, in_doc), table(1, 1)
 {
 
     origin[NR::X] = origin[NR::Y] = 0.0;
@@ -223,23 +223,23 @@ CanvasAxonomGrid::CanvasAxonomGrid (SPNamedView * nv, Inkscape::XML::Node * in_r
     table.set_spacings(2);
     vbox.pack_start(table, false, false, 0);
 
-    _rumg.init (_("Grid _units:"), "units", _wr, repr);
+    _rumg.init (_("Grid _units:"), "units", _wr, repr, doc);
     _rsu_ox.init (_("_Origin X:"), _("X coordinate of grid origin"),
-                  "originx", _rumg, _wr, repr);
+                  "originx", _rumg, _wr, repr, doc);
     _rsu_oy.init (_("O_rigin Y:"), _("Y coordinate of grid origin"),
-                  "originy", _rumg, _wr, repr);
+                  "originy", _rumg, _wr, repr, doc);
     _rsu_sy.init (_("Spacing _Y:"), _("Base length of z-axis"),
-                  "spacingy", _rumg, _wr, repr);
+                  "spacingy", _rumg, _wr, repr, doc);
     _rsu_ax.init (_("Angle X:"), _("Angle of x-axis"),
-                  "gridanglex", _rumg, _wr, repr);
+                  "gridanglex", _rumg, _wr, repr, doc);
     _rsu_az.init (_("Angle Z:"), _("Angle of z-axis"),
-                  "gridanglez", _rumg, _wr, repr);
+                  "gridanglez", _rumg, _wr, repr, doc);
     _rcp_gcol.init (_("Grid line _color:"), _("Grid line color"),
-                    _("Color of grid lines"), "color", "opacity", _wr, repr);
+                    _("Color of grid lines"), "color", "opacity", _wr, repr, doc);
     _rcp_gmcol.init (_("Ma_jor grid line color:"), _("Major grid line color"),
                      _("Color of the major (highlighted) grid lines"),
-                     "empcolor", "empopacity", _wr, repr);
-    _rsi.init (_("_Major grid line every:"), _("lines"), "empspacing", _wr, repr);
+                     "empcolor", "empopacity", _wr, repr, doc);
+    _rsi.init (_("_Major grid line every:"), _("lines"), "empspacing", _wr, repr, doc);
 
     const Gtk::Widget* widget_array[] =
     {
diff --git a/src/display/canvas-axonomgrid.h b/src/display/canvas-axonomgrid.h
index 0eaf914de..157982416 100644
--- a/src/display/canvas-axonomgrid.h
+++ b/src/display/canvas-axonomgrid.h
@@ -33,7 +33,7 @@ namespace Inkscape {
 
 class CanvasAxonomGrid : public CanvasGrid {
 public:
-    CanvasAxonomGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr);
+    CanvasAxonomGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc);
     ~CanvasAxonomGrid();
 
     void Update (NR::Matrix const &affine, unsigned int flags);
diff --git a/src/display/canvas-grid.cpp b/src/display/canvas-grid.cpp
index e1cafb1fd..6c97e2605 100644
--- a/src/display/canvas-grid.cpp
+++ b/src/display/canvas-grid.cpp
@@ -150,9 +150,10 @@ grid_canvasitem_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned i
         NULL  /* order_changed */
     };
 
-CanvasGrid::CanvasGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr)
+CanvasGrid::CanvasGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument *in_doc)
 {
     repr = in_repr;
+    doc = in_doc;
     if (repr) {
         repr->addListener (&_repr_events, this);
     }
@@ -216,37 +217,41 @@ CanvasGrid::getGridTypeFromName(const char * typestr)
 *  writes an <inkscape:grid> child to repr.
 */
 void
-CanvasGrid::writeNewGridToRepr(Inkscape::XML::Node * repr, GridType gridtype)
+CanvasGrid::writeNewGridToRepr(Inkscape::XML::Node * repr, SPDocument * doc, GridType gridtype)
 {
     if (!repr) return;
     if (gridtype > GRID_MAXTYPENR) return;
 
     // first create the child xml node, then hook it to repr. This order is important, to not set off listeners to repr before the new node is complete.
 
-    SPDocument *current_document = sp_desktop_document(SP_ACTIVE_DESKTOP);
-    Inkscape::XML::Document *xml_doc = sp_document_repr_doc(current_document);
+    Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
     Inkscape::XML::Node *newnode;
     newnode = xml_doc->createElement("inkscape:grid");
     newnode->setAttribute("type", getSVGName(gridtype));
 
     repr->appendChild(newnode);
+//    Inkscape::GC::release(repr);  FIX THIS. THIS SHOULD BE HERE!!!
 
-    sp_document_done(current_document, SP_VERB_DIALOG_NAMEDVIEW, _("Create new grid"));
+    sp_document_done(doc, SP_VERB_DIALOG_NAMEDVIEW, _("Create new grid"));
 }
 
 /*
 * Creates a new CanvasGrid object of type gridtype
 */
 CanvasGrid*
-CanvasGrid::NewGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, GridType gridtype)
+CanvasGrid::NewGrid(SPNamedView * nv, Inkscape::XML::Node * repr, SPDocument * doc, GridType gridtype)
 {
-    if (!in_repr) return NULL;
+    if (!repr) return NULL;
+    if (!doc) {
+        g_error("CanvasGrid::NewGrid - doc==NULL");
+        return NULL;
+    }
 
     switch (gridtype) {
         case GRID_RECTANGULAR:
-            return (CanvasGrid*) new CanvasXYGrid(nv, in_repr);
+            return (CanvasGrid*) new CanvasXYGrid(nv, repr, doc);
         case GRID_AXONOMETRIC:
-            return (CanvasGrid*) new CanvasAxonomGrid(nv, in_repr);
+            return (CanvasGrid*) new CanvasAxonomGrid(nv, repr, doc);
     }
 
     return NULL;
@@ -342,8 +347,8 @@ attach_all (Gtk::Table &table, const Gtk::Widget *arr[], unsigned size, int star
     }
 }
 
-CanvasXYGrid::CanvasXYGrid (SPNamedView * nv, Inkscape::XML::Node * in_repr)
-    : CanvasGrid(nv, in_repr), table(1, 1)
+CanvasXYGrid::CanvasXYGrid (SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc)
+    : CanvasGrid(nv, in_repr, in_doc), table(1, 1)
 {
     origin[NR::X] = origin[NR::Y] = 0.0;
     color = DEFAULTGRIDCOLOR;
@@ -360,24 +365,24 @@ CanvasXYGrid::CanvasXYGrid (SPNamedView * nv, Inkscape::XML::Node * in_repr)
     table.set_spacings(2);
     vbox.pack_start(table, false, false, 0);
 
-    _rumg.init (_("Grid _units:"), "units", _wr, repr);
+    _rumg.init (_("Grid _units:"), "units", _wr, repr, doc);
     _rsu_ox.init (_("_Origin X:"), _("X coordinate of grid origin"),
-                  "originx", _rumg, _wr, repr);
+                  "originx", _rumg, _wr, repr, doc);
     _rsu_oy.init (_("O_rigin Y:"), _("Y coordinate of grid origin"),
-                  "originy", _rumg, _wr, repr);
+                  "originy", _rumg, _wr, repr, doc);
     _rsu_sx.init (_("Spacing _X:"), _("Distance between vertical grid lines"),
-                  "spacingx", _rumg, _wr, repr);
+                  "spacingx", _rumg, _wr, repr, doc);
     _rsu_sy.init (_("Spacing _Y:"), _("Distance between horizontal grid lines"),
-                  "spacingy", _rumg, _wr, repr);
+                  "spacingy", _rumg, _wr, repr, doc);
     _rcp_gcol.init (_("Grid line _color:"), _("Grid line color"),
-                    _("Color of grid lines"), "color", "opacity", _wr, repr);
+                    _("Color of grid lines"), "color", "opacity", _wr, repr, doc);
     _rcp_gmcol.init (_("Ma_jor grid line color:"), _("Major grid line color"),
                      _("Color of the major (highlighted) grid lines"),
-                     "empcolor", "empopacity", _wr, repr);
-    _rsi.init (_("_Major grid line every:"), _("lines"), "empspacing", _wr, repr);
+                     "empcolor", "empopacity", _wr, repr, doc);
+    _rsi.init (_("_Major grid line every:"), _("lines"), "empspacing", _wr, repr, doc);
     _rcb_dotted.init ( _("_Show dots instead of lines"), 
                        _("If set, displays dots at gridpoints instead of gridlines"),
-                        "dotted", _wr, false, repr);
+                        "dotted", _wr, false, repr, doc);
 
     const Gtk::Widget* widget_array[] =
     {
diff --git a/src/display/canvas-grid.h b/src/display/canvas-grid.h
index 046653df2..f3ffd7137 100644
--- a/src/display/canvas-grid.h
+++ b/src/display/canvas-grid.h
@@ -31,6 +31,7 @@
 
 struct SPDesktop;
 struct SPNamedView;
+class SPDocument;
 
 namespace Inkscape {
 
@@ -66,7 +67,7 @@ GtkType grid_canvasitem_get_type (void);
 
 class CanvasGrid {
 public:
-    CanvasGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr);
+    CanvasGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument *in_doc);
     virtual ~CanvasGrid();
     
     static const char * getName(GridType type);
@@ -74,8 +75,8 @@ public:
     static GridType     getGridTypeFromSVGName(const char * typestr);
     static GridType     getGridTypeFromName(const char * typestr);
     
-    static CanvasGrid* NewGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, GridType gridtype);
-    static void writeNewGridToRepr(Inkscape::XML::Node * repr, GridType gridtype);
+    static CanvasGrid* NewGrid(SPNamedView * nv, Inkscape::XML::Node * repr, SPDocument *doc, GridType gridtype);
+    static void writeNewGridToRepr(Inkscape::XML::Node * repr, SPDocument * doc, GridType gridtype);
 
     GridCanvasItem * createCanvasItem(SPDesktop * desktop);
     
@@ -88,6 +89,7 @@ public:
     virtual Gtk::Widget & getWidget() = 0;
 
     Inkscape::XML::Node * repr;
+    SPDocument *doc;
     
     Inkscape::Snapper* snapper;
 
@@ -109,7 +111,7 @@ private:
 
 class CanvasXYGrid : public CanvasGrid {
 public:
-    CanvasXYGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr);
+    CanvasXYGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc);
     ~CanvasXYGrid();
 
     void Update (NR::Matrix const &affine, unsigned int flags);
diff --git a/src/sp-namedview.cpp b/src/sp-namedview.cpp
index 02783207e..52d2f1189 100644
--- a/src/sp-namedview.cpp
+++ b/src/sp-namedview.cpp
@@ -431,7 +431,12 @@ sp_namedview_add_grid(SPNamedView *nv, Inkscape::XML::Node *repr, SPDesktop *des
     if (!grid) {
         //create grid object
         Inkscape::GridType gridtype = Inkscape::CanvasGrid::getGridTypeFromSVGName(repr->attribute("type"));
-        grid = Inkscape::CanvasGrid::NewGrid(nv, repr, gridtype);
+        SPDocument *doc = NULL;
+        if (desktop)
+            doc = sp_desktop_document(desktop);
+        else
+            doc = sp_desktop_document(static_cast<SPDesktop*>(nv->views->data));
+        grid = Inkscape::CanvasGrid::NewGrid(nv, repr, doc, gridtype);
         nv->grids = g_slist_append(nv->grids, grid);
     }
     
diff --git a/src/ui/dialog/document-properties.cpp b/src/ui/dialog/document-properties.cpp
index 9bf2d761d..0817b06ab 100644
--- a/src/ui/dialog/document-properties.cpp
+++ b/src/ui/dialog/document-properties.cpp
@@ -529,10 +529,12 @@ on_doc_replaced (SPDesktop* dt, SPDocument* doc)
 void
 DocumentProperties::onNewGrid()
 {
-    Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
+    SPDesktop *dt = SP_ACTIVE_DESKTOP;
+    Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(dt));
+    SPDocument *doc = sp_desktop_document(dt);
 
     Glib::ustring typestring = _grids_combo_gridtype.get_active_text();
-    CanvasGrid::writeNewGridToRepr(repr, CanvasGrid::getGridTypeFromName(typestring.c_str()));
+    CanvasGrid::writeNewGridToRepr(repr, doc, CanvasGrid::getGridTypeFromName(typestring.c_str()));
 }
 
 
@@ -564,7 +566,7 @@ DocumentProperties::onRemoveGrid()
         // delete the grid that corresponds with the selected tab
         // when the grid is deleted from SVG, the SPNamedview handler automatically deletes the object, so found_grid becomes an invalid pointer!
         found_grid->repr->parent()->removeChild(found_grid->repr);
-	sp_document_done(sp_desktop_document(dt), SP_VERB_DIALOG_NAMEDVIEW, _("Remove grid"));
+        sp_document_done(sp_desktop_document(dt), SP_VERB_DIALOG_NAMEDVIEW, _("Remove grid"));
     }
 }
 
diff --git a/src/ui/widget/registered-widget.cpp b/src/ui/widget/registered-widget.cpp
index 45ff46dc6..86c76b236 100644
--- a/src/ui/widget/registered-widget.cpp
+++ b/src/ui/widget/registered-widget.cpp
@@ -59,7 +59,7 @@ RegisteredCheckButton::~RegisteredCheckButton()
 }
 
 void
-RegisteredCheckButton::init (const Glib::ustring& label, const Glib::ustring& tip, const Glib::ustring& key, Registry& wr, bool right, Inkscape::XML::Node* repr_in)
+RegisteredCheckButton::init (const Glib::ustring& label, const Glib::ustring& tip, const Glib::ustring& key, Registry& wr, bool right, Inkscape::XML::Node* repr_in, SPDocument *doc_in)
 {
     _button = new Gtk::CheckButton;
     _tt.set_tip (*_button, tip);
@@ -72,6 +72,9 @@ RegisteredCheckButton::init (const Glib::ustring& label, const Glib::ustring& ti
     _toggled_connection = _button->signal_toggled().connect (sigc::mem_fun (*this, &RegisteredCheckButton::on_toggled));
 
     repr = repr_in;
+    doc = doc_in;
+    if (repr && !doc)  // doc cannot be NULL when repr is not NULL
+        g_error("Initialization of registered widget using defined repr but with doc==NULL");
 }
 
 void
@@ -86,27 +89,28 @@ RegisteredCheckButton::on_toggled()
     if (_wr->isUpdating())
         return;
 
-    SPDesktop *dt = SP_ACTIVE_DESKTOP;
-    if (!dt) {
-        return;
+    // Use local repr here. When repr is specified, use that one, but
+    // if repr==NULL, get the repr of namedview of active desktop.
+    Inkscape::XML::Node *local_repr = repr;
+    SPDocument *local_doc = doc;
+    if (!local_repr) {
+        // no repr specified, use active desktop's namedview's repr
+        SPDesktop *dt = SP_ACTIVE_DESKTOP;
+        if (!dt)
+            return;
+        local_repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
+        local_doc = sp_desktop_document(dt);
     }
 
-    SPDocument *doc = sp_desktop_document(dt);
-
-    //always get the obj.repr. of the current view, as the focus
-    //might have changed when multiple documents are open. Never
-    //use the old value of "repr" here 
-    repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
-
     _wr->setUpdating (true);
 
-    bool saved = sp_document_get_undo_sensitive (doc);
-    sp_document_set_undo_sensitive (doc, false);
-    sp_repr_set_boolean(repr, _key.c_str(), _button->get_active());
-    doc->rroot->setAttribute("sodipodi:modified", "true");
-    sp_document_set_undo_sensitive (doc, saved);
-    sp_document_done (doc, SP_VERB_NONE,
-                      /* TODO: annotate */ "registered-widget.cpp:103");
+    bool saved = sp_document_get_undo_sensitive (local_doc);
+    sp_document_set_undo_sensitive (local_doc, false);
+    sp_repr_set_boolean(local_repr, _key.c_str(), _button->get_active());
+    local_doc->rroot->setAttribute("sodipodi:modified", "true");
+    sp_document_set_undo_sensitive (local_doc, saved);
+    sp_document_done (local_doc, SP_VERB_NONE,
+                      /* TODO: annotate */ "registered-widget.cpp: RegisteredCheckButton::on_toggled");
 
     _wr->setUpdating (false);
 }
@@ -124,7 +128,7 @@ RegisteredUnitMenu::~RegisteredUnitMenu()
 }
 
 void
-RegisteredUnitMenu::init (const Glib::ustring& label, const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in)
+RegisteredUnitMenu::init (const Glib::ustring& label, const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in, SPDocument *doc_in)
 {
     _label = new Gtk::Label (label, 1.0, 0.5);
     _label->set_use_underline (true);
@@ -136,6 +140,9 @@ RegisteredUnitMenu::init (const Glib::ustring& label, const Glib::ustring& key,
     _changed_connection = _sel->signal_changed().connect (sigc::mem_fun (*this, &RegisteredUnitMenu::on_changed));
 
     repr = repr_in;
+    doc = doc_in;
+    if (repr && !doc)  // doc cannot be NULL when repr is not NULL
+        g_warning("Initialization of registered widget using defined repr but with doc==NULL");
 }
 
 void
@@ -150,25 +157,31 @@ RegisteredUnitMenu::on_changed()
     if (_wr->isUpdating())
         return;
 
-    SPDesktop *dt = SP_ACTIVE_DESKTOP;
-    if (!dt)
-        return;
+    // Use local repr here. When repr is specified, use that one, but
+    // if repr==NULL, get the repr of namedview of active desktop.
+    Inkscape::XML::Node *local_repr = repr;
+    SPDocument *local_doc = doc;
+    if (!local_repr) {
+        // no repr specified, use active desktop's namedview's repr
+        SPDesktop *dt = SP_ACTIVE_DESKTOP;
+        if (!dt)
+            return;
+        local_repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
+        local_doc = sp_desktop_document(dt);
+    }
 
     Inkscape::SVGOStringStream os;
     os << _sel->getUnitAbbr();
 
     _wr->setUpdating (true);
 
-    SPDocument *doc = sp_desktop_document(dt);
-    bool saved = sp_document_get_undo_sensitive (doc);
-    sp_document_set_undo_sensitive (doc, false);
-    if (!repr)
-        repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
-    repr->setAttribute(_key.c_str(), os.str().c_str());
-    doc->rroot->setAttribute("sodipodi:modified", "true");
-    sp_document_set_undo_sensitive (doc, saved);
-    sp_document_done (doc, SP_VERB_NONE,
-                      /* TODO: annotate */ "registered-widget.cpp:162");
+    bool saved = sp_document_get_undo_sensitive (local_doc);
+    sp_document_set_undo_sensitive (local_doc, false);
+    local_repr->setAttribute(_key.c_str(), os.str().c_str());
+    local_doc->rroot->setAttribute("sodipodi:modified", "true");
+    sp_document_set_undo_sensitive (local_doc, saved);
+    sp_document_done (local_doc, SP_VERB_NONE,
+                      /* TODO: annotate */ "registered-widget.cpp: RegisteredUnitMenu::on_changed");
 
     _wr->setUpdating (false);
 }
@@ -186,7 +199,7 @@ RegisteredScalarUnit::~RegisteredScalarUnit()
 }
 
 void
-RegisteredScalarUnit::init (const Glib::ustring& label, const Glib::ustring& tip, const Glib::ustring& key, const RegisteredUnitMenu &rum, Registry& wr, Inkscape::XML::Node* repr_in)
+RegisteredScalarUnit::init (const Glib::ustring& label, const Glib::ustring& tip, const Glib::ustring& key, const RegisteredUnitMenu &rum, Registry& wr, Inkscape::XML::Node* repr_in, SPDocument *doc_in)
 {
     _widget = new ScalarUnit (label, tip, UNIT_TYPE_LINEAR, "", "", rum._sel);
     _widget->initScalar (-1e6, 1e6);
@@ -198,6 +211,9 @@ RegisteredScalarUnit::init (const Glib::ustring& label, const Glib::ustring& tip
     _wr = &wr;
 
     repr = repr_in;
+    doc = doc_in;
+    if (repr && !doc)  // doc cannot be NULL when repr is not NULL
+        g_warning("Initialization of registered widget using defined repr but with doc==NULL");
 }
 
 ScalarUnit*
@@ -219,9 +235,18 @@ RegisteredScalarUnit::on_value_changed()
     if (_wr->isUpdating())
         return;
 
-    SPDesktop *dt = SP_ACTIVE_DESKTOP;
-    if (!dt)
-        return;
+    // Use local repr here. When repr is specified, use that one, but
+    // if repr==NULL, get the repr of namedview of active desktop.
+    Inkscape::XML::Node *local_repr = repr;
+    SPDocument *local_doc = doc;
+    if (!local_repr) {
+        // no repr specified, use active desktop's namedview's repr
+        SPDesktop *dt = SP_ACTIVE_DESKTOP;
+        if (!dt)
+            return;
+        local_repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
+        local_doc = sp_desktop_document(dt);
+    }
 
     Inkscape::SVGOStringStream os;
     os << _widget->getValue("");
@@ -230,16 +255,13 @@ RegisteredScalarUnit::on_value_changed()
 
     _wr->setUpdating (true);
 
-    SPDocument *doc = sp_desktop_document(dt);
-    bool saved = sp_document_get_undo_sensitive (doc);
-    sp_document_set_undo_sensitive (doc, false);
-    if (!repr)
-        repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
-    repr->setAttribute(_key.c_str(), os.str().c_str());
-    doc->rroot->setAttribute("sodipodi:modified", "true");
-    sp_document_set_undo_sensitive (doc, saved);
-    sp_document_done (doc, SP_VERB_NONE,
-                      /* TODO: annotate */ "registered-widget.cpp:230");
+    bool saved = sp_document_get_undo_sensitive (local_doc);
+    sp_document_set_undo_sensitive (local_doc, false);
+    local_repr->setAttribute(_key.c_str(), os.str().c_str());
+    local_doc->rroot->setAttribute("sodipodi:modified", "true");
+    sp_document_set_undo_sensitive (local_doc, saved);
+    sp_document_done (local_doc, SP_VERB_NONE,
+                      /* TODO: annotate */ "registered-widget.cpp: RegisteredScalarUnit::on_value_changed");
 
     _wr->setUpdating (false);
 }
@@ -257,7 +279,7 @@ RegisteredColorPicker::~RegisteredColorPicker()
 }
 
 void
-RegisteredColorPicker::init (const Glib::ustring& label, const Glib::ustring& title, const Glib::ustring& tip, const Glib::ustring& ckey, const Glib::ustring& akey, Registry& wr, Inkscape::XML::Node* repr_in)
+RegisteredColorPicker::init (const Glib::ustring& label, const Glib::ustring& title, const Glib::ustring& tip, const Glib::ustring& ckey, const Glib::ustring& akey, Registry& wr, Inkscape::XML::Node* repr_in, SPDocument *doc_in)
 {
     _label = new Gtk::Label (label, 1.0, 0.5);
     _label->set_use_underline (true);
@@ -269,6 +291,9 @@ RegisteredColorPicker::init (const Glib::ustring& label, const Glib::ustring& ti
     _changed_connection = _cp->connectChanged (sigc::mem_fun (*this, &RegisteredColorPicker::on_changed));
 
     repr = repr_in;
+    doc = doc_in;
+    if (repr && !doc)  // doc cannot be NULL when repr is not NULL
+        g_warning("Initialization of registered widget using defined repr but with doc==NULL");
 }
 
 void
@@ -286,16 +311,35 @@ RegisteredColorPicker::closeWindow()
 void
 RegisteredColorPicker::on_changed (guint32 rgba)
 {
-    if (_wr->isUpdating() || !SP_ACTIVE_DESKTOP)
+    if (_wr->isUpdating())
         return;
 
     _wr->setUpdating (true);
-    if (!repr)
-        repr = SP_OBJECT_REPR (sp_desktop_namedview(SP_ACTIVE_DESKTOP));
+
+    // Use local repr here. When repr is specified, use that one, but
+    // if repr==NULL, get the repr of namedview of active desktop.
+    Inkscape::XML::Node *local_repr = repr;
+    SPDocument *local_doc = doc;
+    if (!local_repr) {
+        // no repr specified, use active desktop's namedview's repr
+        SPDesktop *dt = SP_ACTIVE_DESKTOP;
+        if (!dt)
+            return;
+        local_repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
+        local_doc = sp_desktop_document(dt);
+    }
+
     gchar c[32];
     sp_svg_write_color(c, 32, rgba);
-    repr->setAttribute(_ckey.c_str(), c);
-    sp_repr_set_css_double(repr, _akey.c_str(), (rgba & 0xff) / 255.0);
+    bool saved = sp_document_get_undo_sensitive (local_doc);
+    sp_document_set_undo_sensitive (local_doc, false);
+    local_repr->setAttribute(_ckey.c_str(), c);
+    sp_repr_set_css_double(local_repr, _akey.c_str(), (rgba & 0xff) / 255.0);
+    local_doc->rroot->setAttribute("sodipodi:modified", "true");
+    sp_document_set_undo_sensitive (local_doc, saved);
+    sp_document_done (local_doc, SP_VERB_NONE,
+                      /* TODO: annotate */ "registered-widget.cpp: RegisteredColorPicker::on_changed");
+
     _wr->setUpdating (false);
 }
 
@@ -315,7 +359,7 @@ RegisteredSuffixedInteger::~RegisteredSuffixedInteger()
 }
 
 void
-RegisteredSuffixedInteger::init (const Glib::ustring& label, const Glib::ustring& suffix, const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in)
+RegisteredSuffixedInteger::init (const Glib::ustring& label, const Glib::ustring& suffix, const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in, SPDocument *doc_in)
 {
     _key = key;
     _label = new Gtk::Label (label);
@@ -331,6 +375,9 @@ RegisteredSuffixedInteger::init (const Glib::ustring& label, const Glib::ustring
     _wr = &wr;
 
     repr = repr_in;
+    doc = doc_in;
+    if (repr && !doc)  // doc cannot be NULL when repr is not NULL
+        g_warning("Initialization of registered widget using defined repr but with doc==NULL");
 }
 
 void
@@ -342,21 +389,31 @@ RegisteredSuffixedInteger::setValue (int i)
 void
 RegisteredSuffixedInteger::on_value_changed()
 {
-    if (_wr->isUpdating() || !SP_ACTIVE_DESKTOP)
+    if (_wr->isUpdating())
         return;
 
     _wr->setUpdating (true);
 
-    SPDesktop* dt = SP_ACTIVE_DESKTOP;
-    if (!repr)
-        repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
+    // Use local repr here. When repr is specified, use that one, but
+    // if repr==NULL, get the repr of namedview of active desktop.
+    Inkscape::XML::Node *local_repr = repr;
+    SPDocument *local_doc = doc;
+    if (!local_repr) {
+        // no repr specified, use active desktop's namedview's repr
+        SPDesktop *dt = SP_ACTIVE_DESKTOP;
+        if (!dt)
+            return;
+        local_repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
+        local_doc = sp_desktop_document(dt);
+    }
+
     Inkscape::SVGOStringStream os;
     int value = int(_adj.get_value());
     os << value;
 
-    repr->setAttribute(_key.c_str(), os.str().c_str());
-    sp_document_done(sp_desktop_document(dt), SP_VERB_NONE,
-                     /* TODO: annotate */ "registered-widget.cpp:341");
+    local_repr->setAttribute(_key.c_str(), os.str().c_str());
+    sp_document_done(local_doc, SP_VERB_NONE,
+                     /* TODO: annotate */ "registered-widget.cpp: RegisteredSuffixedInteger::on_value_changed");
 
     _wr->setUpdating (false);
 }
@@ -375,7 +432,7 @@ void
 RegisteredRadioButtonPair::init (const Glib::ustring& label,
 const Glib::ustring& label1, const Glib::ustring& label2,
 const Glib::ustring& tip1, const Glib::ustring& tip2,
-const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in)
+const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in, SPDocument *doc_in)
 {
     _hbox = new Gtk::HBox;
     _hbox->add (*manage (new Gtk::Label (label)));
@@ -392,6 +449,9 @@ const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in)
     _changed_connection = _rb1->signal_toggled().connect (sigc::mem_fun (*this, &RegisteredRadioButtonPair::on_value_changed));
 
     repr = repr_in;
+    doc = doc_in;
+    if (repr && !doc)  // doc cannot be NULL when repr is not NULL
+        g_error("Initialization of registered widget using defined repr but with doc==NULL");
 }
 
 void
@@ -407,23 +467,29 @@ RegisteredRadioButtonPair::on_value_changed()
     if (_wr->isUpdating())
         return;
 
-    SPDesktop *dt = SP_ACTIVE_DESKTOP;
-    if (!dt)
-        return;
+    // Use local repr here. When repr is specified, use that one, but
+    // if repr==NULL, get the repr of namedview of active desktop.
+    Inkscape::XML::Node *local_repr = repr;
+    SPDocument *local_doc = doc;
+    if (!local_repr) {
+        // no repr specified, use active desktop's namedview's repr
+        SPDesktop *dt = SP_ACTIVE_DESKTOP;
+        if (!dt)
+            return;
+        local_repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
+        local_doc = sp_desktop_document(dt);
+    }
 
     _wr->setUpdating (true);
 
     bool second = _rb2->get_active();
-    SPDocument *doc = sp_desktop_document(dt);
-    bool saved = sp_document_get_undo_sensitive (doc);
-    sp_document_set_undo_sensitive (doc, false);
-    if (!repr)
-        repr = SP_OBJECT_REPR (sp_desktop_namedview(dt));
-    repr->setAttribute(_key.c_str(), second ? "true" : "false");
-    doc->rroot->setAttribute("sodipodi:modified", "true");
-    sp_document_set_undo_sensitive (doc, saved);
-    sp_document_done (doc, SP_VERB_NONE,
-                      /* TODO: annotate */ "registered-widget.cpp:405");
+    bool saved = sp_document_get_undo_sensitive (local_doc);
+    sp_document_set_undo_sensitive (local_doc, false);
+    local_repr->setAttribute(_key.c_str(), second ? "true" : "false");
+    local_doc->rroot->setAttribute("sodipodi:modified", "true");
+    sp_document_set_undo_sensitive (local_doc, saved);
+    sp_document_done (local_doc, SP_VERB_NONE,
+                      /* TODO: annotate */ "registered-widget.cpp: RegisteredRadioButtonPair::on_value_changed");
 
     _wr->setUpdating (false);
 }
diff --git a/src/ui/widget/registered-widget.h b/src/ui/widget/registered-widget.h
index 2b92d204d..43588a831 100644
--- a/src/ui/widget/registered-widget.h
+++ b/src/ui/widget/registered-widget.h
@@ -16,6 +16,7 @@
 #include <gtkmm/adjustment.h>
 
 class SPUnit;
+class SPDocument;
 
 namespace Gtk {
     class HScale;
@@ -37,7 +38,7 @@ class RegisteredCheckButton {
 public:
     RegisteredCheckButton();
     ~RegisteredCheckButton();
-    void init (const Glib::ustring& label, const Glib::ustring& tip, const Glib::ustring& key, Registry& wr, bool right=true, Inkscape::XML::Node* repr_in=NULL);
+    void init (const Glib::ustring& label, const Glib::ustring& tip, const Glib::ustring& key, Registry& wr, bool right=true, Inkscape::XML::Node* repr_in=NULL, SPDocument *doc_in=NULL);
     void setActive (bool);
 
     Gtk::ToggleButton *_button;
@@ -49,13 +50,14 @@ protected:
     Glib::ustring      _key;
     void on_toggled();
     Inkscape::XML::Node *repr;
+    SPDocument *doc;
 };
 
 class RegisteredUnitMenu {
 public:
     RegisteredUnitMenu();
     ~RegisteredUnitMenu();
-    void init (const Glib::ustring& label, const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in=NULL);
+    void init (const Glib::ustring& label, const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in=NULL, SPDocument *doc_in=NULL);
     void setUnit (const SPUnit*);
     Gtk::Label   *_label;
     UnitMenu     *_sel;
@@ -66,6 +68,7 @@ protected:
     Registry     *_wr;
     Glib::ustring _key;
     Inkscape::XML::Node *repr;
+    SPDocument *doc;
 };
 
 class RegisteredScalarUnit {
@@ -77,7 +80,8 @@ public:
             const Glib::ustring& key, 
             const RegisteredUnitMenu &rum,
             Registry& wr,
-            Inkscape::XML::Node* repr_in=NULL);
+            Inkscape::XML::Node* repr_in=NULL,
+            SPDocument *doc_in=NULL);
     ScalarUnit* getSU();
     void setValue (double);
 
@@ -89,6 +93,7 @@ protected:
     Glib::ustring    _key;
     void on_value_changed();
     Inkscape::XML::Node *repr;
+    SPDocument *doc;
 };
 
 class RegisteredColorPicker {
@@ -101,7 +106,8 @@ public:
             const Glib::ustring& ckey, 
             const Glib::ustring& akey,
             Registry& wr,
-            Inkscape::XML::Node* repr_in=NULL);
+            Inkscape::XML::Node* repr_in=NULL,
+            SPDocument *doc_in=NULL);
     void setRgba32 (guint32);
     void closeWindow();
 
@@ -114,6 +120,7 @@ protected:
     void on_changed (guint32);
     sigc::connection _changed_connection;
     Inkscape::XML::Node *repr;
+    SPDocument *doc;
 };
 
 class RegisteredSuffixedInteger {
@@ -124,7 +131,8 @@ public:
                const Glib::ustring& label2, 
                const Glib::ustring& key,
                Registry& wr,
-               Inkscape::XML::Node* repr_in=NULL);
+               Inkscape::XML::Node* repr_in=NULL,
+               SPDocument *doc_in=NULL);
     void setValue (int);
     Gtk::Label *_label;
     Gtk::HBox _hbox;
@@ -138,6 +146,7 @@ protected:
     sigc::connection _changed_connection;
     void on_value_changed();
     Inkscape::XML::Node *repr;
+    SPDocument *doc;
 };
 
 class RegisteredRadioButtonPair {
@@ -151,7 +160,8 @@ public:
                const Glib::ustring& tip2, 
                const Glib::ustring& key,
                Registry& wr,
-               Inkscape::XML::Node* repr_in=NULL);
+               Inkscape::XML::Node* repr_in=NULL,
+               SPDocument *doc_in=NULL);
     void setValue (bool second);
     Gtk::HBox *_hbox;
 
@@ -163,6 +173,7 @@ protected:
     sigc::connection _changed_connection;
     void on_value_changed();
     Inkscape::XML::Node *repr;
+    SPDocument *doc;
 };