#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <gtk/gtk.h>

#include <gtkmm/widget.h>

#include <gtkmm/icontheme.h>

#include <glibmm/i18n.h>

#include "desktop.h"

#include "desktop-style.h"

#include "document.h"

#include "document-undo.h"

#include "helper/action.h"

#include "inkscape.h"

#include "layer-fns.h"

#include "layer-manager.h"

#include "preferences.h"

#include "sp-item.h"

#include "sp-object.h"

#include "svg/css-ostringstream.h"

#include "ui/icon-names.h"

#include "ui/widget/imagetoggler.h"

#include "verbs.h"

#include "widgets/icon.h"

#include "xml/repr.h"

#include "sp-root.h"

#include "layers.h"

namespace Inkscape {

namespace UI {

namespace Dialog {

LayersPanel& LayersPanel::getInstance()

{

return *new LayersPanel();

}

enum {

COL_VISIBLE = 1,

COL_LOCKED

};

enum {

BUTTON_NEW = 0,

BUTTON_RENAME,

BUTTON_TOP,

BUTTON_BOTTOM,

BUTTON_UP,

BUTTON_DOWN,

BUTTON_DUPLICATE,

BUTTON_DELETE,

BUTTON_SOLO

};

class LayersPanel::InternalUIBounce

{

public:

int _actionCode;

SPObject* _target;

};

void LayersPanel::_styleButton( Gtk::Button& btn, SPDesktop *desktop, unsigned int code, char const* iconName, char const* fallback )

{

bool set = false;

if ( iconName ) {

GtkWidget *child = sp_icon_new( Inkscape::ICON_SIZE_SMALL_TOOLBAR, iconName );

gtk_widget_show( child );

btn.add( *manage(Glib::wrap(child)) );

set = true;

}

if ( desktop ) {

Verb *verb = Verb::get( code );

if ( verb ) {

SPAction *action = verb->get_action(desktop);

if ( !set && action && action->image ) {

GtkWidget *child = sp_icon_new( Inkscape::ICON_SIZE_SMALL_TOOLBAR, action->image );

gtk_widget_show( child );

btn.add( *manage(Glib::wrap(child)) );

set = true;

}

if ( action && action->tip ) {

btn.set_tooltip_text (action->tip);

}

}

}

if ( !set && fallback ) {

btn.set_label( fallback );

}

}

Gtk::MenuItem& LayersPanel::_addPopupItem( SPDesktop *desktop, unsigned int code, char const* iconName, char const* fallback, int id )

{

GtkWidget* iconWidget = 0;

const char* label = 0;

if ( iconName ) {

iconWidget = sp_icon_new( Inkscape::ICON_SIZE_MENU, iconName );

}

if ( desktop ) {

Verb *verb = Verb::get( code );

if ( verb ) {

SPAction *action = verb->get_action(desktop);

if ( !iconWidget && action && action->image ) {

iconWidget = sp_icon_new( Inkscape::ICON_SIZE_MENU, action->image );

}

if ( action ) {

label = action->name;

}

}

}

if ( !label && fallback ) {

label = fallback;

}

Gtk::Widget* wrapped = 0;

if ( iconWidget ) {

wrapped = manage(Glib::wrap(iconWidget));

wrapped->show();

}

Gtk::Menu::MenuList& menulist = _popupMenu.items();

if ( wrapped ) {

menulist.push_back( Gtk::Menu_Helpers::ImageMenuElem( label, *wrapped, sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), id)) );

} else {

menulist.push_back( Gtk::Menu_Helpers::MenuElem( label, sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), id)) );

}

return menulist.back();

}

void LayersPanel::_fireAction( unsigned int code )

{

if ( _desktop ) {

Verb *verb = Verb::get( code );

if ( verb ) {

SPAction *action = verb->get_action(_desktop);

if ( action ) {

sp_action_perform( action, NULL );

}

}

}

}

void LayersPanel::_takeAction( int val )

{

if ( !_pending ) {

_pending = new InternalUIBounce();

_pending->_actionCode = val;

_pending->_target = _selectedLayer();

Glib::signal_timeout().connect( sigc::mem_fun(*this, &LayersPanel::_executeAction), 0 );

}

}

bool LayersPanel::_executeAction()

{

// Make sure selected layer hasn't changed since the action was triggered

if ( _pending

&& (

(_pending->_actionCode == BUTTON_NEW)

|| !( (_desktop && _desktop->currentLayer())

&& (_desktop->currentLayer() != _pending->_target)

)

)

) {

int val = _pending->_actionCode;

switch ( val ) {

case BUTTON_NEW:

{

_fireAction( SP_VERB_LAYER_NEW );

}

break;

case BUTTON_RENAME:

{

_fireAction( SP_VERB_LAYER_RENAME );

}

break;

case BUTTON_TOP:

{

_fireAction( SP_VERB_LAYER_TO_TOP );

}

break;

case BUTTON_BOTTOM:

{

_fireAction( SP_VERB_LAYER_TO_BOTTOM );

}

break;

case BUTTON_UP:

{

_fireAction( SP_VERB_LAYER_RAISE );

}

break;

case BUTTON_DOWN:

{

_fireAction( SP_VERB_LAYER_LOWER );

}

break;

case BUTTON_DUPLICATE:

{

_fireAction( SP_VERB_LAYER_DUPLICATE );

}

break;

case BUTTON_DELETE:

{

_fireAction( SP_VERB_LAYER_DELETE );

}

break;

case BUTTON_SOLO:

{

_fireAction( SP_VERB_LAYER_SOLO );

}

break;

}

delete _pending;

_pending = 0;

}

return false;

}

class LayersPanel::ModelColumns : public Gtk::TreeModel::ColumnRecord

{

public:

ModelColumns()

{

add(_colObject);

add(_colVisible);

add(_colLocked);

add(_colLabel);

}

virtual ~ModelColumns() {}

Gtk::TreeModelColumn<SPObject*> _colObject;

Gtk::TreeModelColumn<Glib::ustring> _colLabel;

Gtk::TreeModelColumn<bool> _colVisible;

Gtk::TreeModelColumn<bool> _colLocked;

};

void LayersPanel::_updateLayer( SPObject *layer ) {

_store->foreach( sigc::bind<SPObject*>(sigc::mem_fun(*this, &LayersPanel::_checkForUpdated), layer) );

}

bool LayersPanel::_checkForUpdated(const Gtk::TreePath &/*path*/, const Gtk::TreeIter& iter, SPObject* layer)

{

bool stopGoing = false;

Gtk::TreeModel::Row row = *iter;

Glib::ustring tmp = row[_model->_colLabel];

if ( layer == row[_model->_colObject] )

{

row[_model->_colLabel] = layer->label() ? layer->label() : layer->getId();

row[_model->_colVisible] = SP_IS_ITEM(layer) ? !SP_ITEM(layer)->isHidden() : false;

row[_model->_colLocked] = SP_IS_ITEM(layer) ? SP_ITEM(layer)->isLocked() : false;

stopGoing = true;

}

return stopGoing;

}

void LayersPanel::_selectLayer( SPObject *layer ) {

if ( !layer || (_desktop && _desktop->doc() && (layer == _desktop->doc()->getRoot())) ) {

if ( _tree.get_selection()->count_selected_rows() != 0 ) {

_tree.get_selection()->unselect_all();

}

} else {

_store->foreach( sigc::bind<SPObject*>(sigc::mem_fun(*this, &LayersPanel::_checkForSelected), layer) );

}

_checkTreeSelection();

}

bool LayersPanel::_checkForSelected(const Gtk::TreePath &path, const Gtk::TreeIter& iter, SPObject* layer)

{

bool stopGoing = false;

Gtk::TreeModel::Row row = *iter;

if ( layer == row[_model->_colObject] )

{

_tree.expand_to_path( path );

Glib::RefPtr<Gtk::TreeSelection> select = _tree.get_selection();

select->select(iter);

stopGoing = true;

}

return stopGoing;

}

void LayersPanel::_layersChanged()

{

if (_desktop) {

SPDocument* document = _desktop->doc();

SPRoot* root = document->getRoot();

if ( root ) {

_selectedConnection.block();

if ( _desktop->layer_manager && _desktop->layer_manager->includes( root ) ) {

SPObject* target = _desktop->currentLayer();

_store->clear();

#if DUMP_LAYERS

g_message("root:%p {%s} [%s]", root, root->id, root->label() );

#endif // DUMP_LAYERS

_addLayer( document, root, 0, target, 0 );

}

_selectedConnection.unblock();

}

}

}

void LayersPanel::_addLayer( SPDocument* doc, SPObject* layer, Gtk::TreeModel::Row* parentRow, SPObject* target, int level )

{

if ( _desktop && _desktop->layer_manager && layer && (level < _maxNestDepth) ) {

unsigned int counter = _desktop->layer_manager->childCount(layer);

for ( unsigned int i = 0; i < counter; i++ ) {

SPObject *child = _desktop->layer_manager->nthChildOf(layer, i);

if ( child ) {

#if DUMP_LAYERS

g_message(" %3d layer:%p {%s} [%s]", level, child, child->id, child->label() );

#endif // DUMP_LAYERS

Gtk::TreeModel::iterator iter = parentRow ? _store->prepend(parentRow->children()) : _store->prepend();

Gtk::TreeModel::Row row = *iter;

row[_model->_colObject] = child;

row[_model->_colLabel] = child->label() ? child->label() : child->getId();

row[_model->_colVisible] = SP_IS_ITEM(child) ? !SP_ITEM(child)->isHidden() : false;

row[_model->_colLocked] = SP_IS_ITEM(child) ? SP_ITEM(child)->isLocked() : false;

if ( target && child == target ) {

_tree.expand_to_path( _store->get_path(iter) );

Glib::RefPtr<Gtk::TreeSelection> select = _tree.get_selection();

select->select(iter);

_checkTreeSelection();

}

_addLayer( doc, child, &row, target, level + 1 );

}

}

}

}

SPObject* LayersPanel::_selectedLayer()

{

SPObject* obj = 0;

Gtk::TreeModel::iterator iter = _tree.get_selection()->get_selected();

if ( iter ) {

Gtk::TreeModel::Row row = *iter;

obj = row[_model->_colObject];

}

return obj;

}

void LayersPanel::_pushTreeSelectionToCurrent()

{

// TODO hunt down the possible API abuse in getting NULL

if ( _desktop && _desktop->layer_manager && _desktop->currentRoot() ) {

SPObject* inTree = _selectedLayer();

if ( inTree ) {

SPObject* curr = _desktop->currentLayer();

if ( curr != inTree ) {

_desktop->layer_manager->setCurrentLayer( inTree );

}

} else {

_desktop->layer_manager->setCurrentLayer( _desktop->doc()->getRoot() );

}

}

}

void LayersPanel::_checkTreeSelection()

{

bool sensitive = false;

bool sensitiveNonTop = false;

bool sensitiveNonBottom = false;

if ( _tree.get_selection()->count_selected_rows() > 0 ) {

sensitive = true;

SPObject* inTree = _selectedLayer();

if ( inTree ) {

sensitiveNonTop = (Inkscape::next_layer(inTree->parent, inTree) != 0);

sensitiveNonBottom = (Inkscape::previous_layer(inTree->parent, inTree) != 0);

}

}

for ( std::vector<Gtk::Widget*>::iterator it = _watching.begin(); it != _watching.end(); ++it ) {

(*it)->set_sensitive( sensitive );

}

for ( std::vector<Gtk::Widget*>::iterator it = _watchingNonTop.begin(); it != _watchingNonTop.end(); ++it ) {

(*it)->set_sensitive( sensitiveNonTop );

}

for ( std::vector<Gtk::Widget*>::iterator it = _watchingNonBottom.begin(); it != _watchingNonBottom.end(); ++it ) {

(*it)->set_sensitive( sensitiveNonBottom );

}

}

void LayersPanel::_preToggle( GdkEvent const *event )

{

if ( _toggleEvent ) {

gdk_event_free(_toggleEvent);

_toggleEvent = 0;

}

if ( event && (event->type == GDK_BUTTON_PRESS) ) {

// Make a copy so we can keep it around.

_toggleEvent = gdk_event_copy(const_cast<GdkEvent*>(event));

}

}

void LayersPanel::_toggled( Glib::ustring const& str, int targetCol )

{

g_return_if_fail(_desktop != NULL);

Gtk::TreeModel::Children::iterator iter = _tree.get_model()->get_iter(str);

Gtk::TreeModel::Row row = *iter;

Glib::ustring tmp = row[_model->_colLabel];

SPObject* obj = row[_model->_colObject];

SPItem* item = ( obj && SP_IS_ITEM(obj) ) ? SP_ITEM(obj) : 0;

if ( item ) {

switch ( targetCol ) {

case COL_VISIBLE:

{

bool newValue = !row[_model->_colVisible];

row[_model->_colVisible] = newValue;

item->setHidden( !newValue );

item->updateRepr();

DocumentUndo::done( _desktop->doc() , SP_VERB_DIALOG_LAYERS,

newValue? _("Unhide layer") : _("Hide layer"));

}

break;

case COL_LOCKED:

{

bool newValue = !row[_model->_colLocked];

row[_model->_colLocked] = newValue;

item->setLocked( newValue );

item->updateRepr();

DocumentUndo::done( _desktop->doc() , SP_VERB_DIALOG_LAYERS,

newValue? _("Lock layer") : _("Unlock layer"));

}

break;

}

}

}

void LayersPanel::_handleButtonEvent(GdkEventButton* evt)

{

// TODO - fix to a better is-popup function

if ( (evt->type == GDK_BUTTON_PRESS) && (evt->button == 3) ) {

{

Gtk::TreeModel::Path path;

Gtk::TreeViewColumn* col = 0;

int x = static_cast<int>(evt->x);

int y = static_cast<int>(evt->y);

int x2 = 0;

int y2 = 0;

if ( _tree.get_path_at_pos( x, y,

path, col,

x2, y2 ) ) {

_checkTreeSelection();

_popupMenu.popup(evt->button, evt->time);

}

}

}

}

void LayersPanel::_handleRowChange( Gtk::TreeModel::Path const& /*path*/, Gtk::TreeModel::iterator const& iter )

{

Gtk::TreeModel::Row row = *iter;

if ( row && _desktop && _desktop->layer_manager) {

SPObject* obj = row[_model->_colObject];

if ( obj ) {

gchar const* oldLabel = obj->label();

Glib::ustring tmp = row[_model->_colLabel];

if ( oldLabel && oldLabel[0] && !tmp.empty() && (tmp != oldLabel) ) {

_desktop->layer_manager->renameLayer( obj, tmp.c_str(), FALSE );

row[_model->_colLabel] = obj->label();

}

}

}

}

bool LayersPanel::_rowSelectFunction( Glib::RefPtr<Gtk::TreeModel> const & /*model*/, Gtk::TreeModel::Path const & /*path*/, bool currentlySelected )

{

bool val = true;

if ( !currentlySelected && _toggleEvent )

{

GdkEvent* event = gtk_get_current_event();

if ( event ) {

// (keep these checks separate, so we know when to call gdk_event_free()

if ( event->type == GDK_BUTTON_PRESS ) {

GdkEventButton const* target = reinterpret_cast<GdkEventButton const*>(_toggleEvent);

GdkEventButton const* evtb = reinterpret_cast<GdkEventButton const*>(event);

if ( (evtb->window == target->window)

&& (evtb->send_event == target->send_event)

&& (evtb->time == target->time)

&& (evtb->state == target->state)

)

{

// Ooooh! It's a magic one

val = false;

}

}

gdk_event_free(event);

}

}

return val;

}

LayersPanel::LayersPanel() :

UI::Widget::Panel("", "/dialogs/layers", SP_VERB_DIALOG_LAYERS),

deskTrack(),

_maxNestDepth(20),

_desktop(0),

_model(0),

_pending(0),

_toggleEvent(0),

_compositeSettings(SP_VERB_DIALOG_LAYERS, "layers", UI::Widget::SimpleFilterModifier::BLEND),

desktopChangeConn()

{

Inkscape::Preferences *prefs = Inkscape::Preferences::get();

_maxNestDepth = prefs->getIntLimited("/dialogs/layers/maxDepth", 20, 1, 1000);

ModelColumns *zoop = new ModelColumns();

_model = zoop;

_store = Gtk::TreeStore::create( *zoop );

_tree.set_model( _store );

_tree.set_headers_visible(false);

Inkscape::UI::Widget::ImageToggler *eyeRenderer = manage( new Inkscape::UI::Widget::ImageToggler(

INKSCAPE_ICON("object-visible"), INKSCAPE_ICON("object-hidden")) );

int visibleColNum = _tree.append_column("vis", *eyeRenderer) - 1;

eyeRenderer->signal_pre_toggle().connect( sigc::mem_fun(*this, &LayersPanel::_preToggle) );

eyeRenderer->signal_toggled().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_toggled), (int)COL_VISIBLE) );

eyeRenderer->property_activatable() = true;

Gtk::TreeViewColumn* col = _tree.get_column(visibleColNum);

if ( col ) {

col->add_attribute( eyeRenderer->property_active(), _model->_colVisible );

}

Inkscape::UI::Widget::ImageToggler * renderer = manage( new Inkscape::UI::Widget::ImageToggler(

INKSCAPE_ICON("object-locked"), INKSCAPE_ICON("object-unlocked")) );

int lockedColNum = _tree.append_column("lock", *renderer) - 1;

renderer->signal_pre_toggle().connect( sigc::mem_fun(*this, &LayersPanel::_preToggle) );

renderer->signal_toggled().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_toggled), (int)COL_LOCKED) );

renderer->property_activatable() = true;

col = _tree.get_column(lockedColNum);

if ( col ) {

col->add_attribute( renderer->property_active(), _model->_colLocked );

}

int nameColNum = _tree.append_column_editable("Name", _model->_colLabel) - 1;

_tree.set_expander_column( *_tree.get_column(nameColNum) );

_compositeSettings.setSubject(&_subject);

_selectedConnection = _tree.get_selection()->signal_changed().connect( sigc::mem_fun(*this, &LayersPanel::_pushTreeSelectionToCurrent) );

_tree.get_selection()->set_select_function( sigc::mem_fun(*this, &LayersPanel::_rowSelectFunction) );

_tree.get_model()->signal_row_changed().connect( sigc::mem_fun(*this, &LayersPanel::_handleRowChange) );

_tree.signal_button_press_event().connect_notify( sigc::mem_fun(*this, &LayersPanel::_handleButtonEvent) );

_scroller.add( _tree );

_scroller.set_policy( Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC );

_scroller.set_shadow_type(Gtk::SHADOW_IN);

Gtk:: Requisition sreq = _scroller.size_request();

int minHeight = 70;

if (sreq.height < minHeight) {

// Set a min height to see the layers when used with Ubuntu liboverlay-scrollbar

_scroller.set_size_request(sreq.width, minHeight);

}

_watching.push_back( &_compositeSettings );

_layersPage.pack_start( _scroller, Gtk::PACK_EXPAND_WIDGET );

_layersPage.pack_end(_compositeSettings, Gtk::PACK_SHRINK);

_layersPage.pack_end(_buttonsRow, Gtk::PACK_SHRINK);

_getContents()->pack_start(_layersPage, Gtk::PACK_EXPAND_WIDGET);

SPDesktop* targetDesktop = getDesktop();

_buttonsRow.set_child_min_width( 16 );

Gtk::Button* btn = manage( new Gtk::Button() );

_styleButton( *btn, targetDesktop, SP_VERB_LAYER_NEW, GTK_STOCK_ADD, C_("Layers", "New") );

btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_NEW) );

_buttonsRow.add( *btn );

btn = manage( new Gtk::Button() );

_styleButton( *btn, targetDesktop, SP_VERB_LAYER_TO_TOP, GTK_STOCK_GOTO_TOP, C_("Layers", "Top") );

btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_TOP) );

_watchingNonTop.push_back( btn );

_buttonsRow.add( *btn );

btn = manage( new Gtk::Button() );

_styleButton( *btn, targetDesktop, SP_VERB_LAYER_RAISE, GTK_STOCK_GO_UP, C_("Layers", "Up") );

btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_UP) );

_watchingNonTop.push_back( btn );

_buttonsRow.add( *btn );

btn = manage( new Gtk::Button() );

_styleButton( *btn, targetDesktop, SP_VERB_LAYER_LOWER, GTK_STOCK_GO_DOWN, C_("Layers", "Dn") );

btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_DOWN) );

_watchingNonBottom.push_back( btn );

_buttonsRow.add( *btn );

btn = manage( new Gtk::Button() );

_styleButton( *btn, targetDesktop, SP_VERB_LAYER_TO_BOTTOM, GTK_STOCK_GOTO_BOTTOM, C_("Layers", "Bot") );

btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_BOTTOM) );

_watchingNonBottom.push_back( btn );

_buttonsRow.add( *btn );

btn = manage( new Gtk::Button() );

_styleButton( *btn, targetDesktop, SP_VERB_LAYER_DELETE, GTK_STOCK_REMOVE, _("X") );

btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_DELETE) );

_watching.push_back( btn );

_buttonsRow.add( *btn );

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

{

_watching.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_RENAME, 0, "Rename", (int)BUTTON_RENAME ) );

_watching.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_DUPLICATE, 0, "Duplicate", (int)BUTTON_DUPLICATE ) );

_watching.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_NEW, 0, "New", (int)BUTTON_NEW ) );

_watching.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_SOLO, 0, "Solo", (int)BUTTON_SOLO ) );

_popupMenu.items().push_back( Gtk::Menu_Helpers::SeparatorElem() );

_watchingNonTop.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_RAISE, GTK_STOCK_GO_UP, "Up", (int)BUTTON_UP ) );

_watchingNonBottom.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_LOWER, GTK_STOCK_GO_DOWN, "Down", (int)BUTTON_DOWN ) );

_popupMenu.show_all_children();

}

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

for ( std::vector<Gtk::Widget*>::iterator it = _watching.begin(); it != _watching.end(); ++it ) {

(*it)->set_sensitive( false );

}

for ( std::vector<Gtk::Widget*>::iterator it = _watchingNonTop.begin(); it != _watchingNonTop.end(); ++it ) {

(*it)->set_sensitive( false );

}

for ( std::vector<Gtk::Widget*>::iterator it = _watchingNonBottom.begin(); it != _watchingNonBottom.end(); ++it ) {

(*it)->set_sensitive( false );

}

setDesktop( targetDesktop );

show_all_children();

// restorePanelPrefs();

// Connect this up last

desktopChangeConn = deskTrack.connectDesktopChanged( sigc::mem_fun(*this, &LayersPanel::setDesktop) );

deskTrack.connect(GTK_WIDGET(gobj()));

}

LayersPanel::~LayersPanel()

{

setDesktop(NULL);

_compositeSettings.setSubject(NULL);

if ( _model )

{

delete _model;

_model = 0;

}

if (_pending) {

delete _pending;

_pending = 0;

}

if ( _toggleEvent )

{

gdk_event_free( _toggleEvent );

_toggleEvent = 0;

}

desktopChangeConn.disconnect();

deskTrack.disconnect();

}

void LayersPanel::setDesktop( SPDesktop* desktop )

{

Panel::setDesktop(desktop);

if ( desktop != _desktop ) {

_layerChangedConnection.disconnect();

_layerUpdatedConnection.disconnect();

_changedConnection.disconnect();

if ( _desktop ) {

_desktop = 0;

}

_desktop = Panel::getDesktop();

if ( _desktop ) {

//setLabel( _desktop->doc()->name );

LayerManager *mgr = _desktop->layer_manager;

if ( mgr ) {

_layerChangedConnection = mgr->connectCurrentLayerChanged( sigc::mem_fun(*this, &LayersPanel::_selectLayer) );

_layerUpdatedConnection = mgr->connectLayerDetailsChanged( sigc::mem_fun(*this, &LayersPanel::_updateLayer) );

_changedConnection = mgr->connectChanged( sigc::mem_fun(*this, &LayersPanel::_layersChanged) );

}

_layersChanged();

}

}

deskTrack.setBase(desktop);

}

} //namespace Dialogs

} //namespace UI

} //namespace Inkscape