Fix for 940715 : Convert XML Editor to a dockable dialog

(bzr r11065)

1 files changed, 1202 insertions, 0 deletions

diff --git a/src/ui/dialog/xml-tree.cpp b/src/ui/dialog/xml-tree.cpp
new file mode 100644
index 000000000..27064d393
--- /dev/null
+++ b/src/ui/dialog/xml-tree.cpp
@@ -0,0 +1,1202 @@
+/**
+ * @file
+ * XML editor.
+ */
+/* Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   MenTaLguY <mental@rydia.net>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Johan Engelen <goejendaagh@zonnet.nl>
+ *   David Turner
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 1999-2006 Authors
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ *
+ */
+
+#include "widgets/icon.h"
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+#include <gtkmm/stock.h>
+
+#include "desktop.h"
+#include "desktop-handles.h"
+#include "dialogs/dialog-events.h"
+#include "document.h"
+#include "document-undo.h"
+#include "event-context.h"
+#include "helper/window.h"
+#include "inkscape.h"
+#include "interface.h"
+#include "macros.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "preferences.h"
+#include "selection.h"
+#include "shortcuts.h"
+#include "sp-root.h"
+#include "sp-string.h"
+#include "sp-tspan.h"
+#include "ui/icon-names.h"
+#include "verbs.h"
+#include "widgets/icon.h"
+
+#include "xml-tree.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Dialog {
+
+XmlTree::XmlTree (void) :
+    UI::Widget::Panel ("", "/dialogs/xml/", SP_VERB_DIALOG_XML_EDITOR),
+    blocked (0),
+    _message_stack (NULL),
+    _message_context (NULL),
+    current_desktop (NULL),
+    current_document (NULL),
+    selected_attr (0),
+    selected_repr (NULL),
+    tree (NULL),
+    attributes (NULL),
+    content (NULL),
+    attr_name (),
+    attr_value (),
+    status (""),
+    tree_toolbar(),
+    xml_element_new_button ( _("New element node")),
+    xml_text_new_button ( _("New text node")),
+    xml_node_delete_button ( Q_("nodeAsInXMLdialogTooltip|Delete node")),
+    xml_node_duplicate_button ( _("Duplicate node")),
+    unindent_node_button (Gtk::Stock::UNINDENT),
+    indent_node_button (Gtk::Stock::INDENT),
+    raise_node_button (Gtk::Stock::GO_UP),
+    lower_node_button (Gtk::Stock::GO_DOWN),
+    attr_toolbar(),
+    xml_attribute_delete_button (_("Delete attribute")),
+    text_container (),
+    attr_container (),
+    attr_subpaned_container (),
+    set_attr (_("Set")),
+    new_window(NULL)
+{
+
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    if (!desktop) {
+        return;
+    }
+
+    Gtk::Box *contents = _getContents();
+    contents->set_spacing(0);
+    contents->set_size_request(320, 260);
+
+    status.set_alignment( 0.0, 0.5);
+    status.set_size_request(1, -1);
+    status.set_markup("");
+    status_box.pack_start( status, TRUE, TRUE, 0);
+    contents->pack_end(status_box, false, false, 2);
+
+    paned.set_position(256);
+    contents->pack_start(paned, TRUE, TRUE, 0);
+
+    _message_stack = new Inkscape::MessageStack();
+    _message_context = new Inkscape::MessageContext(_message_stack);
+    _message_changed_connection = _message_stack->connectChanged(
+            sigc::bind(sigc::ptr_fun(_set_status_message), GTK_WIDGET(status.gobj())));
+
+    /* tree view */
+    paned.pack1(left_box);
+
+    tree = SP_XMLVIEW_TREE(sp_xmlview_tree_new(NULL, NULL, NULL));
+    gtk_widget_set_tooltip_text( GTK_WIDGET(tree), _("Drag to reorder nodes") );
+
+    tree_toolbar.set_toolbar_style(Gtk::TOOLBAR_ICONS);
+    xml_element_new_button.set_icon_widget(*Gtk::manage(Glib::wrap(
+            sp_icon_new (Inkscape::ICON_SIZE_LARGE_TOOLBAR, INKSCAPE_ICON("xml-element-new")))) );
+    xml_element_new_button.set_tooltip_text(_("New element node"));
+    xml_element_new_button.set_sensitive(false);
+    tree_toolbar.add(xml_element_new_button);
+
+    xml_text_new_button.set_icon_widget(*Gtk::manage(Glib::wrap(
+            sp_icon_new (Inkscape::ICON_SIZE_LARGE_TOOLBAR, INKSCAPE_ICON("xml-text-new")))));
+    xml_text_new_button.set_tooltip_text(_("New text node"));
+    xml_text_new_button.set_sensitive(false);
+    tree_toolbar.add(xml_text_new_button);
+
+    xml_node_duplicate_button.set_icon_widget(*Gtk::manage(Glib::wrap(
+            sp_icon_new (Inkscape::ICON_SIZE_LARGE_TOOLBAR, INKSCAPE_ICON("xml-node-duplicate")))));
+    xml_node_duplicate_button.set_tooltip_text(_("Duplicate node"));
+    xml_node_duplicate_button.set_sensitive(false);
+    tree_toolbar.add(xml_node_duplicate_button);
+
+    tree_toolbar.add(separator);
+
+    xml_node_delete_button.set_icon_widget(*Gtk::manage(Glib::wrap(
+            sp_icon_new (Inkscape::ICON_SIZE_LARGE_TOOLBAR, INKSCAPE_ICON("xml-node-delete")))));
+    xml_node_delete_button.set_tooltip_text(Q_("nodeAsInXMLdialogTooltip|Delete node"));
+    xml_node_delete_button.set_sensitive(false);
+    tree_toolbar.add(xml_node_delete_button);
+
+    tree_toolbar.add(separator2);
+
+    unindent_node_button.set_label(_("Unindent node"));
+    unindent_node_button.set_tooltip_text(_("Unindent node"));
+    unindent_node_button.set_sensitive(false);
+    tree_toolbar.add(unindent_node_button);
+
+    indent_node_button.set_label(_("Indent node"));
+    indent_node_button.set_tooltip_text(_("Indent node"));
+    indent_node_button.set_sensitive(false);
+    tree_toolbar.add(indent_node_button);
+
+    raise_node_button.set_label(_("Raise node"));
+    raise_node_button.set_tooltip_text(_("Raise node"));
+    raise_node_button.set_sensitive(false);
+    tree_toolbar.add(raise_node_button);
+
+    lower_node_button.set_label(_("Lower node"));
+    lower_node_button.set_tooltip_text(_("Lower node"));
+    lower_node_button.set_sensitive(false);
+    tree_toolbar.add(lower_node_button);
+
+    left_box.pack_start(tree_toolbar, FALSE, TRUE, 0);
+
+    Gtk::ScrolledWindow *tree_scroller = new Gtk::ScrolledWindow();
+    tree_scroller->set_policy( Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC );
+    tree_scroller->add(*Gtk::manage(Glib::wrap(GTK_WIDGET(tree))));
+
+    left_box.pack_start(*tree_scroller);
+
+    /* node view */
+    paned.pack2(right_box);
+
+    /* attributes */
+    right_box.pack_start( attr_container, TRUE, TRUE, 0 );
+
+    attributes = SP_XMLVIEW_ATTR_LIST(sp_xmlview_attr_list_new(NULL));
+
+    attr_toolbar.set_toolbar_style(Gtk::TOOLBAR_ICONS);
+    xml_attribute_delete_button.set_icon_widget(*Gtk::manage(Glib::wrap(sp_icon_new (Inkscape::ICON_SIZE_LARGE_TOOLBAR, INKSCAPE_ICON("xml-attribute-delete")))));
+    xml_attribute_delete_button.set_tooltip_text(_("Delete attribute"));
+    xml_attribute_delete_button.set_sensitive(false);
+    attr_toolbar.add(xml_attribute_delete_button);
+
+    attr_container.pack_start( attr_toolbar, FALSE, TRUE, 0 );
+    attr_container.pack_start( attr_subpaned_container, TRUE, TRUE, 0 );
+
+    Gtk::ScrolledWindow *attr_scroller = new Gtk::ScrolledWindow();
+    attr_scroller->set_policy( Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC );
+    attr_scroller->set_size_request(0, 60);
+
+    attr_subpaned_container.pack1( *attr_scroller );
+    attr_scroller->add(*Gtk::manage(Glib::wrap(GTK_WIDGET(attributes))));
+
+    attr_vbox.pack_start( attr_hbox, FALSE, TRUE, 0);
+
+    attr_name.set_tooltip_text(_("Attribute name") ); // TRANSLATORS: "Attribute" is a noun here
+    attr_name.set_width_chars (10);
+    attr_hbox.pack_start( attr_name, TRUE, TRUE, 0);
+
+    set_attr.set_sensitive(FALSE);
+    attr_hbox.pack_start(set_attr, FALSE, FALSE, 0);
+
+    Gtk::ScrolledWindow *scroller = new Gtk::ScrolledWindow();
+    scroller->set_policy( Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC );
+    scroller->set_shadow_type(Gtk::SHADOW_IN);
+
+    attr_vbox.pack_start(*scroller, TRUE, TRUE, 0);
+
+    attr_value.set_size_request(0, 60);
+    attr_value.set_wrap_mode(Gtk::WRAP_CHAR);
+    attr_value.set_tooltip_text( _("Attribute value") );// TRANSLATORS: "Attribute" is a noun here
+    attr_value.set_editable(TRUE);
+    scroller->add(attr_value);
+
+    attr_subpaned_container.pack2( attr_vbox, FALSE, TRUE );
+
+    /* text */
+    text_container.set_policy( Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC );
+    right_box.pack_start(text_container, TRUE, TRUE, 0);
+
+    content = SP_XMLVIEW_CONTENT(sp_xmlview_content_new(NULL));
+    text_container.add(*Gtk::manage(Glib::wrap(GTK_WIDGET(content))));
+
+    /* Signal handlers */
+    g_signal_connect( G_OBJECT(tree), "tree_select_row", G_CALLBACK(on_tree_select_row), this );
+    g_signal_connect( G_OBJECT(tree), "tree_unselect_row", G_CALLBACK(on_tree_unselect_row), this);
+    g_signal_connect_after( G_OBJECT(tree), "tree_move", G_CALLBACK(after_tree_move), this);
+
+    g_signal_connect( G_OBJECT(attributes), "select_row", G_CALLBACK(on_attr_select_row), this);
+    g_signal_connect( G_OBJECT(attributes), "unselect_row", G_CALLBACK(on_attr_unselect_row), this);
+    g_signal_connect( G_OBJECT(attributes), "row-value-changed", G_CALLBACK(on_attr_row_changed), this);
+
+    xml_element_new_button.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_new_element_node));
+    xml_text_new_button.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_new_text_node));
+    xml_node_duplicate_button.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_duplicate_node));
+    xml_node_delete_button.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_delete_node));
+    unindent_node_button.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_unindent_node));
+    indent_node_button.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_indent_node));
+    raise_node_button.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_raise_node));
+    lower_node_button.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_lower_node));
+    xml_attribute_delete_button.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_delete_attr));
+    set_attr.signal_clicked().connect(sigc::mem_fun(*this, &XmlTree::cmd_set_attr));
+    attr_name.signal_changed().connect(sigc::mem_fun(*this, &XmlTree::onNameChanged));
+    attr_value.signal_key_press_event().connect(sigc::mem_fun(*this, &XmlTree::sp_xml_tree_key_press), false);
+
+    desktopChangeConn = deskTrack.connectDesktopChanged( sigc::mem_fun(*this, &XmlTree::set_tree_desktop) );
+    deskTrack.connect(GTK_WIDGET(gobj()));
+
+    /* initial show/hide */
+    show_all();
+
+/*
+    // hide() doesn't seem to work in the constructor, so moved this to present()
+    text_container.hide();
+    attr_container.hide();
+*/
+
+    tree_reset_context();
+
+    g_assert(desktop != NULL);
+    set_tree_desktop(desktop);
+
+}
+
+void XmlTree::present()
+{
+    text_container.hide();
+    attr_container.hide();
+
+    set_tree_select(get_dt_select());
+
+    UI::Widget::Panel::present();
+}
+
+XmlTree::~XmlTree (void)
+{
+    set_tree_desktop(NULL);
+
+    _message_changed_connection.disconnect();
+    delete _message_context;
+    _message_context = NULL;
+    Inkscape::GC::release(_message_stack);
+    _message_stack = NULL;
+    _message_changed_connection.~connection();
+
+    //status = "";
+}
+
+void XmlTree::setDesktop(SPDesktop *desktop)
+{
+    Panel::setDesktop(desktop);
+    deskTrack.setBase(desktop);
+}
+
+/**
+ * Sets the XML status bar when the tree is selected.
+ */
+void XmlTree::tree_reset_context()
+{
+    _message_context->set(Inkscape::NORMAL_MESSAGE,
+                          _("<b>Click</b> to select nodes, <b>drag</b> to rearrange."));
+}
+
+
+/**
+ * Sets the XML status bar, depending on which attr is selected.
+ */
+void XmlTree::attr_reset_context(gint attr)
+{
+    if (attr == 0) {
+        _message_context->set(Inkscape::NORMAL_MESSAGE,
+                              _("<b>Click</b> attribute to edit."));
+    }
+    else {
+        const gchar *name = g_quark_to_string(attr);
+        gchar *message = g_strdup_printf(_("Attribute <b>%s</b> selected. Press <b>Ctrl+Enter</b> when done editing to commit changes."), name);
+        _message_context->set(Inkscape::NORMAL_MESSAGE, message);
+        g_free(message);
+    }
+}
+
+bool XmlTree::sp_xml_tree_key_press(GdkEventKey *event)
+{
+    unsigned int shortcut = get_group0_keyval (event) |
+        ( event->state & GDK_SHIFT_MASK ?
+          SP_SHORTCUT_SHIFT_MASK : 0 ) |
+        ( event->state & GDK_CONTROL_MASK ?
+          SP_SHORTCUT_CONTROL_MASK : 0 ) |
+        ( event->state & GDK_MOD1_MASK ?
+          SP_SHORTCUT_ALT_MASK : 0 );
+
+    /* fixme: if you need to add more xml-tree-specific callbacks, you should probably upgrade
+     * the sp_shortcut mechanism to take into account windows. */
+    if (shortcut == (SP_SHORTCUT_CONTROL_MASK | GDK_Return)) {
+        cmd_set_attr();
+        return true;
+    }
+    return false;
+}
+
+void XmlTree::set_tree_desktop(SPDesktop *desktop)
+{
+    if ( desktop == current_desktop ) {
+        return;
+    }
+
+    if (current_desktop) {
+        sel_changed_connection.disconnect();
+        document_replaced_connection.disconnect();
+    }
+    current_desktop = desktop;
+    if (desktop) {
+        sel_changed_connection = sp_desktop_selection(desktop)->connectChanged(sigc::hide(sigc::mem_fun(this, &XmlTree::on_desktop_selection_changed)));
+        document_replaced_connection = desktop->connectDocumentReplaced(sigc::mem_fun(this, &XmlTree::on_document_replaced));
+
+        set_tree_document(sp_desktop_document(desktop));
+    } else {
+        set_tree_document(NULL);
+    }
+
+} // end of set_tree_desktop()
+
+
+void XmlTree::set_tree_document(SPDocument *document)
+{
+    if (document == current_document) {
+        return;
+    }
+
+    if (current_document) {
+        document_uri_set_connection.disconnect();
+    }
+    current_document = document;
+    if (current_document) {
+
+        document_uri_set_connection = current_document->connectURISet(sigc::bind(sigc::ptr_fun(&on_document_uri_set), current_document));
+        on_document_uri_set( current_document->getURI(), current_document );
+        set_tree_repr(current_document->getReprRoot());
+    } else {
+        set_tree_repr(NULL);
+    }
+}
+
+
+
+void XmlTree::set_tree_repr(Inkscape::XML::Node *repr)
+{
+    if (repr == selected_repr) {
+        return;
+    }
+
+    gtk_clist_freeze(GTK_CLIST(tree));
+
+    sp_xmlview_tree_set_repr(tree, repr);
+    if (repr) {
+        set_tree_select(get_dt_select());
+    } else {
+        set_tree_select(NULL);
+    }
+
+    gtk_clist_thaw(GTK_CLIST(tree));
+
+    propagate_tree_select(selected_repr);
+
+}
+
+
+
+void XmlTree::set_tree_select(Inkscape::XML::Node *repr)
+{
+    if (selected_repr) {
+        Inkscape::GC::release(selected_repr);
+    }
+
+    selected_repr = repr;
+    if (repr) {
+        GtkCTreeNode *node;
+
+        Inkscape::GC::anchor(selected_repr);
+
+        node = sp_xmlview_tree_get_repr_node(SP_XMLVIEW_TREE(tree), repr);
+        if (node) {
+            GtkCTreeNode *parent;
+
+            gtk_ctree_select(GTK_CTREE(tree), node);
+
+            parent = GTK_CTREE_ROW(node)->parent;
+            while (parent) {
+                gtk_ctree_expand(GTK_CTREE(tree), parent);
+                parent = GTK_CTREE_ROW(parent)->parent;
+            }
+
+            gtk_ctree_node_moveto(GTK_CTREE(tree), node, 0, 0.66, 0.0);
+        }
+    } else {
+        gtk_clist_unselect_all(GTK_CLIST(tree));
+        on_tree_unselect_row_disable();
+        on_tree_unselect_row_hide();
+    }
+    propagate_tree_select(repr);
+}
+
+
+
+void XmlTree::propagate_tree_select(Inkscape::XML::Node *repr)
+{
+    if (repr && repr->type() == Inkscape::XML::ELEMENT_NODE) {
+        sp_xmlview_attr_list_set_repr(attributes, repr);
+    } else {
+        sp_xmlview_attr_list_set_repr(attributes, NULL);
+    }
+
+    if (repr && ( repr->type() == Inkscape::XML::TEXT_NODE || repr->type() == Inkscape::XML::COMMENT_NODE || repr->type() == Inkscape::XML::PI_NODE ) ) {
+        sp_xmlview_content_set_repr(content, repr);
+    } else {
+        sp_xmlview_content_set_repr(content, NULL);
+    }
+}
+
+
+Inkscape::XML::Node *XmlTree::get_dt_select()
+{
+    if (!current_desktop) {
+        return NULL;
+    }
+    return sp_desktop_selection(current_desktop)->singleRepr();
+}
+
+
+
+void XmlTree::set_dt_select(Inkscape::XML::Node *repr)
+{
+    if (!current_desktop) {
+        return;
+    }
+
+    Inkscape::Selection *selection = sp_desktop_selection(current_desktop);
+
+    SPObject *object;
+    if (repr) {
+        while ( ( repr->type() != Inkscape::XML::ELEMENT_NODE )
+                && repr->parent() )
+        {
+            repr = repr->parent();
+        } // end of while loop
+
+        object = sp_desktop_document(current_desktop)->getObjectByRepr(repr);
+    } else {
+        object = NULL;
+    }
+
+    blocked++;
+    if ( object && in_dt_coordsys(*object)
+         && !(SP_IS_STRING(object) ||
+                SP_IS_ROOT(object)     ) )
+    {
+            /* We cannot set selection to root or string - they are not items and selection is not
+             * equipped to deal with them */
+            selection->set(SP_ITEM(object));
+    }
+    blocked--;
+
+} // end of set_dt_select()
+
+
+void XmlTree::on_tree_select_row(GtkCTree *tree,
+                        GtkCTreeNode *node,
+                        gint column,
+                        gpointer data)
+{
+    XmlTree *self = (XmlTree *)data;
+
+    Inkscape::XML::Node *repr = sp_xmlview_tree_node_get_repr(SP_XMLVIEW_TREE(tree), node);
+    g_assert(repr != NULL);
+
+    if (self->selected_repr) {
+        Inkscape::GC::release(self->selected_repr);
+        self->selected_repr = NULL;
+    }
+    self->selected_repr = repr;
+    Inkscape::GC::anchor(self->selected_repr);
+
+    self->propagate_tree_select(self->selected_repr);
+
+    self->set_dt_select(self->selected_repr);
+
+    self->tree_reset_context();
+
+    self->on_tree_select_row_enable(node);
+}
+
+void XmlTree::on_tree_unselect_row(GtkCTree *tree,
+                          GtkCTreeNode *node,
+                          gint column,
+                          gpointer data)
+{
+    XmlTree *self = (XmlTree *)data;
+
+    if (self->blocked) {
+        return;
+    }
+
+
+    Inkscape::XML::Node *repr = sp_xmlview_tree_node_get_repr(SP_XMLVIEW_TREE(tree), node);
+    self->propagate_tree_select(NULL);
+    self->set_dt_select(NULL);
+
+    if (self->selected_repr && (self->selected_repr == repr)) {
+        Inkscape::GC::release(self->selected_repr);
+        self->selected_repr = NULL;
+        self->selected_attr = 0;
+    }
+
+    self->on_tree_unselect_row_disable();
+    self->on_tree_unselect_row_hide();
+    self->on_attr_unselect_row_clear_text();
+}
+
+
+
+void XmlTree::after_tree_move(GtkCTree */*tree*/,
+                     GtkCTreeNode *node,
+                     GtkCTreeNode *new_parent,
+                     GtkCTreeNode *new_sibling,
+                     gpointer data)
+{
+    XmlTree *self = (XmlTree *)data;
+
+    if (GTK_CTREE_ROW(node)->parent  == new_parent &&
+        GTK_CTREE_ROW(node)->sibling == new_sibling)
+    {
+        DocumentUndo::done(self->current_document, SP_VERB_DIALOG_XML_EDITOR,
+                           _("Drag XML subtree"));
+    } else {
+        DocumentUndo::cancel(self->current_document);
+    }
+}
+
+void XmlTree::_set_status_message(Inkscape::MessageType /*type*/, const gchar *message, GtkWidget *widget)
+{
+    if (widget) {
+        gtk_label_set_markup(GTK_LABEL(widget), message ? message : "");
+    }
+}
+
+void XmlTree::on_tree_select_row_enable(GtkCTreeNode *node)
+{
+    if (!node) {
+        return;
+    }
+
+    Inkscape::XML::Node *repr = sp_xmlview_tree_node_get_repr(SP_XMLVIEW_TREE(tree), node);
+    Inkscape::XML::Node *parent=repr->parent();
+
+    //on_tree_select_row_enable_if_mutable
+    xml_node_duplicate_button.set_sensitive(xml_tree_node_mutable(node));
+    xml_node_delete_button.set_sensitive(xml_tree_node_mutable(node));
+
+    //on_tree_select_row_enable_if_element
+    if (repr->type() == Inkscape::XML::ELEMENT_NODE) {
+        xml_element_new_button.set_sensitive(true);
+        xml_text_new_button.set_sensitive(true);
+
+    } else {
+        xml_element_new_button.set_sensitive(false);
+        xml_text_new_button.set_sensitive(false);
+    }
+
+    //on_tree_select_row_enable_if_has_grandparent
+    {
+        GtkCTreeNode *parent = GTK_CTREE_ROW(node)->parent;
+
+        if (parent) {
+            GtkCTreeNode *grandparent = GTK_CTREE_ROW(parent)->parent;
+            if (grandparent) {
+                unindent_node_button.set_sensitive(true);
+            } else {
+                unindent_node_button.set_sensitive(false);
+            }
+        } else {
+            unindent_node_button.set_sensitive(false);
+        }
+    }
+    // on_tree_select_row_enable_if_indentable
+    gboolean indentable = FALSE;
+
+    if (xml_tree_node_mutable(node)) {
+        Inkscape::XML::Node *prev;
+
+        if ( parent && repr != parent->firstChild() ) {
+            g_assert(parent->firstChild());
+
+            // skip to the child just before the current repr
+            for ( prev = parent->firstChild() ;
+                  prev && prev->next() != repr ;
+                  prev = prev->next() ){};
+
+            if (prev && prev->type() == Inkscape::XML::ELEMENT_NODE) {
+                indentable = TRUE;
+            }
+        }
+    }
+
+    indent_node_button.set_sensitive(indentable);
+
+    //on_tree_select_row_enable_if_not_first_child
+    {
+        if ( parent && repr != parent->firstChild() ) {
+            raise_node_button.set_sensitive(true);
+        } else {
+            raise_node_button.set_sensitive(false);
+        }
+    }
+
+    //on_tree_select_row_enable_if_not_last_child
+    {
+        if ( parent && parent->parent() && repr->next() ) {
+            lower_node_button.set_sensitive(true);
+        } else {
+            lower_node_button.set_sensitive(false);
+        }
+    }
+
+    //on_tree_select_row_show_if_element
+    if (repr->type() == Inkscape::XML::ELEMENT_NODE) {
+        attr_container.show();
+    } else {
+        attr_container.hide();
+    }
+
+    //on_tree_select_row_show_if_text
+    if ( repr->type() == Inkscape::XML::TEXT_NODE || repr->type() == Inkscape::XML::COMMENT_NODE || repr->type() == Inkscape::XML::PI_NODE ) {
+        text_container.show();
+    } else {
+        text_container.hide();
+    }
+
+}
+
+
+gboolean XmlTree::xml_tree_node_mutable(GtkCTreeNode *node)
+{
+    // top-level is immutable, obviously
+    if (!GTK_CTREE_ROW(node)->parent) {
+        return false;
+    }
+
+    // if not in base level (where namedview, defs, etc go), we're mutable
+    if (GTK_CTREE_ROW(GTK_CTREE_ROW(node)->parent)->parent) {
+        return true;
+    }
+
+    Inkscape::XML::Node *repr;
+    repr = sp_xmlview_tree_node_get_repr(SP_XMLVIEW_TREE(tree), node);
+    g_assert(repr);
+
+    // don't let "defs" or "namedview" disappear
+    if ( !strcmp(repr->name(),"svg:defs") ||
+         !strcmp(repr->name(),"sodipodi:namedview") ) {
+        return false;
+    }
+
+    // everyone else is okay, I guess.  :)
+    return true;
+}
+
+
+
+void XmlTree::on_tree_unselect_row_disable()
+{
+    xml_text_new_button.set_sensitive(false);
+    xml_element_new_button.set_sensitive(false);
+    xml_node_delete_button.set_sensitive(false);
+    xml_node_duplicate_button.set_sensitive(false);
+    unindent_node_button.set_sensitive(false);
+    indent_node_button.set_sensitive(false);
+    raise_node_button.set_sensitive(false);
+    lower_node_button.set_sensitive(false);
+    xml_attribute_delete_button.set_sensitive(false);
+}
+
+void XmlTree::on_tree_unselect_row_hide()
+{
+    attr_container.hide();
+    text_container.hide();
+}
+
+void XmlTree::on_attr_select_row(GtkCList *list, gint row, gint column,
+                        GdkEventButton *event, gpointer data)
+{
+    XmlTree *self = (XmlTree *)data;
+
+    self->selected_attr = sp_xmlview_attr_list_get_row_key(list, row);
+    self->attr_value.grab_focus ();
+
+    self->attr_reset_context(self->selected_attr);
+
+    self->on_attr_select_row_enable();
+    self->on_attr_select_row_set_name_content(row);
+    self->on_attr_select_row_set_value_content(row);
+}
+
+
+void XmlTree::on_attr_unselect_row(GtkCList */*list*/, gint /*row*/, gint /*column*/,
+                          GdkEventButton */*event*/, gpointer data)
+{
+    XmlTree *self = (XmlTree *)data;
+
+    self->selected_attr = 0;
+    self->attr_reset_context(self->selected_attr);
+
+    self->on_attr_unselect_row_disable();
+    self->on_attr_unselect_row_clear_text();
+}
+
+
+void XmlTree::on_attr_row_changed(GtkCList *list, gint row, gpointer data)
+{
+    gint attr = sp_xmlview_attr_list_get_row_key(list, row);
+
+    XmlTree *self = (XmlTree *)data;
+    if (attr == self->selected_attr) {
+        /* if the attr changed, reselect the row in the list to sync
+           the edit box */
+
+        /*
+        // get current attr values
+        const gchar * name = g_quark_to_string (sp_xmlview_attr_list_get_row_key (list, row));
+        const gchar * value = self->selected_repr->attribute(name);
+
+        g_warning("value: '%s'",value);
+
+        // get the edit box value
+        GtkTextIter start, end;
+        gtk_text_buffer_get_bounds ( gtk_text_view_get_buffer (self->attr_value),
+                                     &start, &end );
+        gchar * text = gtk_text_buffer_get_text ( gtk_text_view_get_buffer (self->attr_value),
+                                       &start, &end, TRUE );
+        g_warning("text: '%s'",text);
+
+        // compare to edit box
+        if (strcmp(text,value)) {
+            // issue warning if they're different
+            _message_stack->flash(Inkscape::WARNING_MESSAGE,
+                                  _("Attribute changed in GUI while editing values!"));
+        }
+        g_free (text);
+
+        */
+        gtk_clist_unselect_row( GTK_CLIST(list), row, 0 );
+        gtk_clist_select_row( GTK_CLIST(list), row, 0 );
+    }
+}
+
+
+void XmlTree::on_attr_select_row_set_name_content(gint row)
+{
+    const gchar *name = g_quark_to_string(sp_xmlview_attr_list_get_row_key(GTK_CLIST(attributes), row));
+    attr_name.set_text(name);
+}
+
+
+void XmlTree::on_attr_select_row_set_value_content(gint row)
+{
+    const gchar *name = g_quark_to_string(sp_xmlview_attr_list_get_row_key(GTK_CLIST(attributes), row));
+    const gchar *value = selected_repr->attribute(name);
+    if (!value) {
+        value = "";
+    }
+    attr_value.get_buffer()->set_text(value);
+}
+
+void XmlTree::on_attr_select_row_enable()
+{
+    xml_attribute_delete_button.set_sensitive(true);
+}
+
+
+
+void XmlTree::on_attr_unselect_row_disable()
+{
+    xml_attribute_delete_button.set_sensitive(false);
+}
+
+
+void XmlTree::on_attr_unselect_row_clear_text()
+{
+    attr_name.set_text("");
+    attr_value.get_buffer()->set_text("", 0);
+}
+
+void XmlTree::onNameChanged()
+{
+    Glib::ustring text = attr_name.get_text();
+    /* TODO: need to do checking a little more rigorous than this */
+    if (!text.empty()) {
+        set_attr.set_sensitive(true);
+    } else {
+        set_attr.set_sensitive(false);
+    }
+}
+
+void XmlTree::onCreateNameChanged()
+{
+    Glib::ustring text = name_entry->get_text();
+    /* TODO: need to do checking a little more rigorous than this */
+    if (!text.empty()) {
+        create_button->set_sensitive(true);
+    } else {
+        create_button->set_sensitive(false);
+    }
+}
+
+void XmlTree::on_desktop_selection_changed()
+{
+    if (!blocked++) {
+        Inkscape::XML::Node *node = get_dt_select();
+        set_tree_select(node);
+        if (!node) {
+            on_attr_unselect_row_clear_text();
+        }
+    }
+    blocked--;
+}
+
+void XmlTree::on_document_replaced(SPDesktop *dt, SPDocument *doc)
+{
+    if (current_desktop)
+        sel_changed_connection.disconnect();
+
+    sel_changed_connection = sp_desktop_selection(dt)->connectChanged(sigc::hide(sigc::mem_fun(this, &XmlTree::on_desktop_selection_changed)));
+    set_tree_document(doc);
+}
+
+void XmlTree::on_document_uri_set(gchar const */*uri*/, SPDocument *document)
+{
+/*
+ * Seems to be no way to set the title on a docked dialog
+    gchar title[500];
+    sp_ui_dialog_title_string(Inkscape::Verb::get(SP_VERB_DIALOG_XML_EDITOR), title);
+    gchar *t = g_strdup_printf("%s: %s", document->getName(), title);
+    //gtk_window_set_title(GTK_WINDOW(dlg), t);
+    g_free(t);
+*/
+}
+
+gboolean XmlTree::quit_on_esc (GtkWidget *w, GdkEventKey *event, GObject */*tbl*/)
+{
+    switch (get_group0_keyval (event)) {
+        case GDK_Escape: // defocus
+            gtk_widget_destroy(w);
+            return TRUE;
+    }
+    return FALSE;
+}
+
+void XmlTree::cmd_new_element_node()
+{
+    GtkWidget *cancel, *vbox, *bbox, *sep;
+
+    g_assert(selected_repr != NULL);
+
+    new_window = sp_window_new(NULL, TRUE);
+    gtk_container_set_border_width(GTK_CONTAINER(new_window), 4);
+    gtk_window_set_title(GTK_WINDOW(new_window), _("New element node..."));
+    gtk_window_set_resizable(GTK_WINDOW(new_window), FALSE);
+    gtk_window_set_position(GTK_WINDOW(new_window), GTK_WIN_POS_CENTER);
+    gtk_window_set_transient_for(GTK_WINDOW(new_window), GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(gobj()))));
+    gtk_window_set_modal(GTK_WINDOW(new_window), TRUE);
+    g_signal_connect(G_OBJECT(new_window), "destroy", gtk_main_quit, NULL);
+    g_signal_connect(G_OBJECT(new_window), "key-press-event", G_CALLBACK(quit_on_esc), new_window);
+
+    vbox = gtk_vbox_new(FALSE, 4);
+    gtk_container_add(GTK_CONTAINER(new_window), vbox);
+
+    name_entry = new Gtk::Entry();
+    gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(name_entry->gobj()), FALSE, TRUE, 0);
+
+    sep = gtk_hseparator_new();
+    gtk_box_pack_start(GTK_BOX(vbox), sep, FALSE, TRUE, 0);
+
+    bbox = gtk_hbutton_box_new();
+    gtk_container_set_border_width(GTK_CONTAINER(bbox), 4);
+    gtk_button_box_set_layout(GTK_BUTTON_BOX(bbox), GTK_BUTTONBOX_END);
+    gtk_box_pack_start(GTK_BOX(vbox), bbox, FALSE, TRUE, 0);
+
+    cancel = gtk_button_new_with_label(_("Cancel"));
+    g_signal_connect_swapped( G_OBJECT(cancel), "clicked",
+                                G_CALLBACK(gtk_widget_destroy),
+                                G_OBJECT(new_window) );
+    gtk_container_add(GTK_CONTAINER(bbox), cancel);
+
+    create_button = new Gtk::Button(_("Create"));
+    create_button->set_sensitive(FALSE);
+
+    name_entry->signal_changed().connect(sigc::mem_fun(*this, &XmlTree::onCreateNameChanged));
+
+    g_signal_connect_swapped( G_OBJECT(create_button->gobj()), "clicked",
+                                G_CALLBACK(gtk_widget_destroy),
+                                G_OBJECT(new_window) );
+    create_button->set_can_default( TRUE );
+    create_button->set_receives_default( TRUE );
+    gtk_container_add(GTK_CONTAINER(bbox), GTK_WIDGET(create_button->gobj()));
+
+    gtk_widget_show_all(GTK_WIDGET(new_window));
+    //gtk_window_set_default(GTK_WINDOW(window), GTK_WIDGET(create));
+    name_entry->grab_focus();
+
+    gtk_main();
+
+    gchar *new_name = g_strdup(name_entry->get_text().c_str());
+
+    if (selected_repr != NULL && new_name) {
+        Inkscape::XML::Document *xml_doc = current_document->getReprDoc();
+        Inkscape::XML::Node *new_repr;
+        new_repr = xml_doc->createElement(new_name);
+        Inkscape::GC::release(new_repr);
+        g_free(new_name);
+        selected_repr->appendChild(new_repr);
+        set_tree_select(new_repr);
+        set_dt_select(new_repr);
+
+        DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                           _("Create new element node"));
+    }
+
+} // end of cmd_new_element_node()
+
+
+
+void XmlTree::cmd_new_text_node()
+{
+    g_assert(selected_repr != NULL);
+
+    Inkscape::XML::Document *xml_doc = current_document->getReprDoc();
+    Inkscape::XML::Node *text = xml_doc->createTextNode("");
+    selected_repr->appendChild(text);
+
+    DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                       _("Create new text node"));
+
+    set_tree_select(text);
+    set_dt_select(text);
+
+    gtk_window_set_focus(GTK_WINDOW(new_window), GTK_WIDGET(content));
+
+}
+
+void XmlTree::cmd_duplicate_node()
+{
+    g_assert(selected_repr != NULL);
+
+    Inkscape::XML::Node *parent = selected_repr->parent();
+    Inkscape::XML::Node *dup = selected_repr->duplicate(parent->document());
+    parent->addChild(dup, selected_repr);
+
+    DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                       _("Duplicate node"));
+
+    GtkCTreeNode *node = sp_xmlview_tree_get_repr_node(SP_XMLVIEW_TREE(tree), dup);
+
+    if (node) {
+        gtk_ctree_select(GTK_CTREE(tree), node);
+    }
+}
+
+void XmlTree::cmd_delete_node()
+{
+    g_assert(selected_repr != NULL);
+    sp_repr_unparent(selected_repr);
+
+    DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                       Q_("nodeAsInXMLinHistoryDialog|Delete node"));
+}
+
+
+
+void XmlTree::cmd_delete_attr()
+{
+    g_assert(selected_repr != NULL);
+    g_assert(selected_attr != 0);
+
+    selected_repr->setAttribute(g_quark_to_string(selected_attr), NULL);
+
+    SPObject *updated = current_document->getObjectByRepr(selected_repr);
+    if (updated) {
+        // force immediate update of dependant attributes
+        updated->updateRepr();
+    }
+
+    DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                       _("Delete attribute"));
+}
+
+
+
+void XmlTree::cmd_set_attr()
+{
+    g_assert(selected_repr != NULL);
+
+    gchar *name = g_strdup(attr_name.get_text().c_str());
+    gchar *value = g_strdup(attr_value.get_buffer()->get_text().c_str());
+
+    selected_repr->setAttribute(name, value, false);
+
+    g_free(name);
+    g_free(value);
+
+    SPObject *updated = current_document->getObjectByRepr(selected_repr);
+    if (updated) {
+        // force immediate update of dependant attributes
+        updated->updateRepr();
+    }
+
+    DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                       _("Change attribute"));
+
+    /* TODO: actually, the row won't have been created yet.  why? */
+    gint row = sp_xmlview_attr_list_find_row_from_key(GTK_CLIST(attributes),
+                                                      g_quark_from_string(name));
+    if (row != -1) {
+        gtk_clist_select_row(GTK_CLIST(attributes), row, 0);
+    }
+}
+
+
+void XmlTree::cmd_raise_node()
+{
+    g_assert(selected_repr != NULL);
+
+
+    Inkscape::XML::Node *parent = selected_repr->parent();
+    g_return_if_fail(parent != NULL);
+    g_return_if_fail(parent->firstChild() != selected_repr);
+
+    Inkscape::XML::Node *ref = NULL;
+    Inkscape::XML::Node *before = parent->firstChild();
+    while (before && before->next() != selected_repr) {
+        ref = before;
+        before = before->next();
+    }
+
+    parent->changeOrder(selected_repr, ref);
+
+    DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                       _("Raise node"));
+
+    set_tree_select(selected_repr);
+    set_dt_select(selected_repr);
+}
+
+
+
+void XmlTree::cmd_lower_node()
+{
+    g_assert(selected_repr != NULL);
+
+    g_return_if_fail(selected_repr->next() != NULL);
+    Inkscape::XML::Node *parent = selected_repr->parent();
+
+    parent->changeOrder(selected_repr, selected_repr->next());
+
+    DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                       _("Lower node"));
+
+    set_tree_select(selected_repr);
+    set_dt_select(selected_repr);
+}
+
+void XmlTree::cmd_indent_node()
+{
+    Inkscape::XML::Node *repr = selected_repr;
+    g_assert(repr != NULL);
+
+    Inkscape::XML::Node *parent = repr->parent();
+    g_return_if_fail(parent != NULL);
+    g_return_if_fail(parent->firstChild() != repr);
+
+    Inkscape::XML::Node* prev = parent->firstChild();
+    while (prev && prev->next() != repr) {
+        prev = prev->next();
+    }
+    g_return_if_fail(prev != NULL);
+    g_return_if_fail(prev->type() == Inkscape::XML::ELEMENT_NODE);
+
+    Inkscape::XML::Node* ref = NULL;
+    if (prev->firstChild()) {
+        for( ref = prev->firstChild() ; ref->next() ; ref = ref->next() ){};
+    }
+
+    parent->removeChild(repr);
+    prev->addChild(repr, ref);
+
+    DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                       _("Indent node"));
+    set_tree_select(repr);
+    set_dt_select(repr);
+
+} // end of cmd_indent_node()
+
+
+
+void XmlTree::cmd_unindent_node()
+{
+    Inkscape::XML::Node *repr = selected_repr;
+    g_assert(repr != NULL);
+
+    Inkscape::XML::Node *parent = repr->parent();
+    g_return_if_fail(parent);
+    Inkscape::XML::Node *grandparent = parent->parent();
+    g_return_if_fail(grandparent);
+
+    parent->removeChild(repr);
+    grandparent->addChild(repr, parent);
+
+    DocumentUndo::done(current_document, SP_VERB_DIALOG_XML_EDITOR,
+                       _("Unindent node"));
+    set_tree_select(repr);
+    set_dt_select(repr);
+
+} // end of cmd_unindent_node()
+
+/** Returns true iff \a item is suitable to be included in the selection, in particular
+    whether it has a bounding box in the desktop coordinate system for rendering resize handles.
+
+    Descendents of <defs> nodes (markers etc.) return false, for example.
+*/
+bool XmlTree::in_dt_coordsys(SPObject const &item)
+{
+    /* Definition based on sp_item_i2doc_affine. */
+    SPObject const *child = &item;
+    g_return_val_if_fail(child != NULL, false);
+    for(;;) {
+        if (!SP_IS_ITEM(child)) {
+            return false;
+        }
+        SPObject const * const parent = child->parent;
+        if (parent == NULL) {
+            break;
+        }
+        child = parent;
+    }
+    g_assert(SP_IS_ROOT(child));
+    /* Relevance: Otherwise, I'm not sure whether to return true or false. */
+    return true;
+}
+
+}
+}
+}
+
+/*
+  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:fileencoding=utf-8:textwidth=99 :