sp-xmlview-attr-list.cpp

/*
 * Specialization of GtkCList for the XML tree view
 *
 * Authors:
 *   MenTaLguY <mental@rydia.net>
 *
 * Copyright (C) 2002 MenTaLguY
 *
 * Released under the GNU GPL; see COPYING for details
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <cstring>
#include <glibmm/i18n.h>

#include "helper/sp-marshal.h"
#include "../xml/node-event-vector.h"
#include "sp-xmlview-attr-list.h"

static void sp_xmlview_attr_list_class_init (SPXMLViewAttrListClass * klass);
static void sp_xmlview_attr_list_init (SPXMLViewAttrList * list);
static void sp_xmlview_attr_list_destroy (GtkObject * object);

static void event_attr_changed (Inkscape::XML::Node * repr, const gchar * name, const gchar * old_value, const gchar * new_value, bool is_interactive, gpointer data);

static GtkCListClass * parent_class = NULL;

static Inkscape::XML::NodeEventVector repr_events = {
      NULL, /* child_added */
      NULL, /* child_removed */
      event_attr_changed,
      NULL, /* content_changed */
      NULL  /* order_changed */
};

GtkWidget *
sp_xmlview_attr_list_new (Inkscape::XML::Node * repr)
{
      SPXMLViewAttrList * list;

      list = (SPXMLViewAttrList*)g_object_new (SP_TYPE_XMLVIEW_ATTR_LIST, "n_columns", 2, NULL);

      gtk_clist_set_column_title (GTK_CLIST (list), 0, _("Attribute"));
      gtk_clist_set_column_title (GTK_CLIST (list), 1, _("Value"));
      gtk_clist_column_titles_show (GTK_CLIST (list));

      gtk_clist_column_titles_passive (GTK_CLIST (list));
      gtk_clist_set_column_auto_resize (GTK_CLIST (list), 0, TRUE);
      gtk_clist_set_column_auto_resize (GTK_CLIST (list), 1, TRUE);
      gtk_clist_set_sort_column (GTK_CLIST (list), 0);
      gtk_clist_set_auto_sort (GTK_CLIST (list), TRUE);

      sp_xmlview_attr_list_set_repr (list, repr);

      return (GtkWidget *) list;
}

void
sp_xmlview_attr_list_set_repr (SPXMLViewAttrList * list, Inkscape::XML::Node * repr)
{
      if ( repr == list->repr ) return;
      gtk_clist_freeze (GTK_CLIST (list));
      if (list->repr) {
            gtk_clist_clear (GTK_CLIST (list));
            sp_repr_remove_listener_by_data (list->repr, list);
            Inkscape::GC::release(list->repr);
      }
      list->repr = repr;
      if (repr) {
            Inkscape::GC::anchor(repr);
            sp_repr_add_listener (repr, &repr_events, list);
            sp_repr_synthesize_events (repr, &repr_events, list);
      }
      gtk_clist_thaw (GTK_CLIST (list));
}

GtkType
sp_xmlview_attr_list_get_type (void)
{
      static GtkType type = 0;

      if (!type) {
            static const GtkTypeInfo info = {
                  "SPXMLViewAttrList",
                  sizeof (SPXMLViewAttrList),
                  sizeof (SPXMLViewAttrListClass),
                  (GtkClassInitFunc) sp_xmlview_attr_list_class_init,
                  (GtkObjectInitFunc) sp_xmlview_attr_list_init,
                  NULL, NULL, NULL
            };
            type = gtk_type_unique (GTK_TYPE_CLIST, &info);
      }

      return type;
}

void
sp_xmlview_attr_list_class_init (SPXMLViewAttrListClass * klass)
{
      GtkObjectClass * object_class;

      object_class = (GtkObjectClass *) klass;
      object_class->destroy = sp_xmlview_attr_list_destroy;

      parent_class = (GtkCListClass*)gtk_type_class (GTK_TYPE_CLIST);

        g_signal_new (  "row-value-changed",
                  G_TYPE_FROM_CLASS(klass),
                  G_SIGNAL_RUN_FIRST,
                  G_STRUCT_OFFSET (SPXMLViewAttrListClass, row_changed),
                  NULL, NULL,
                  sp_marshal_NONE__UINT,
                  G_TYPE_NONE, 1,
                  G_TYPE_UINT);
}

void
sp_xmlview_attr_list_init (SPXMLViewAttrList * list)
{
      list->repr = NULL;
}

void
sp_xmlview_attr_list_destroy (GtkObject * object)
{
      SPXMLViewAttrList * list;

      list = SP_XMLVIEW_ATTR_LIST (object);

      sp_xmlview_attr_list_set_repr (list, NULL);

      GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

void
event_attr_changed (Inkscape::XML::Node * /*repr*/,
                    const gchar * name,
                    const gchar * /*old_value*/,
                    const gchar * new_value,
                    bool /*is_interactive*/,
                    gpointer data)
{
      gint row;
      SPXMLViewAttrList * list;
      gchar new_text[128 + 4];
      gchar *gtktext;

      list = SP_XMLVIEW_ATTR_LIST (data);

      gtk_clist_freeze (GTK_CLIST (list));

      if (new_value) {
            strncpy (new_text, new_value, 128);
            if (strlen (new_value) >= 128) {
                  strcpy (new_text + 128, "...");
            }
            gtktext = new_text;
      } else {
            gtktext = NULL;
      }

      row = gtk_clist_find_row_from_data (GTK_CLIST (list), GINT_TO_POINTER (g_quark_from_string (name)));
      if (row != -1) {
            if (new_value) {
                  gtk_clist_set_text (GTK_CLIST (list), row, 1, gtktext);
            } else {
                  gtk_clist_remove (GTK_CLIST (list), row);
            }
      } else if (new_value != NULL) {
            const gchar * text[2];

            text[0] = name;
            text[1] = gtktext;

            row = gtk_clist_append (GTK_CLIST (list), (gchar **)text);
            gtk_clist_set_row_data (GTK_CLIST (list), row, GINT_TO_POINTER (g_quark_from_string (name)));
      }

      gtk_clist_thaw (GTK_CLIST (list));

      // send a "changed" signal so widget owners will know I've updated
      g_signal_emit_by_name(G_OBJECT (list), "row-value-changed", row );
}