--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file valuenodereplace.cpp
+** \brief Template File
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "valuenodereplace.h"
+#include <synfigapp/canvasinterface.h>
+
+#include <synfigapp/general.h>
+
+#endif
+
+using namespace std;
+using namespace etl;
+using namespace synfig;
+using namespace synfigapp;
+using namespace Action;
+
+/* === M A C R O S ========================================================= */
+
+ACTION_INIT(Action::ValueNodeReplace);
+ACTION_SET_NAME(Action::ValueNodeReplace,"ValueNodeReplace");
+ACTION_SET_LOCAL_NAME(Action::ValueNodeReplace,N_("Replace ValueNode"));
+ACTION_SET_TASK(Action::ValueNodeReplace,"replace");
+ACTION_SET_CATEGORY(Action::ValueNodeReplace,Action::CATEGORY_VALUENODE|Action::CATEGORY_DRAG);
+ACTION_SET_PRIORITY(Action::ValueNodeReplace,0);
+ACTION_SET_VERSION(Action::ValueNodeReplace,"0.0");
+ACTION_SET_CVS_ID(Action::ValueNodeReplace,"$Id$");
+
+/* === G L O B A L S ======================================================= */
+
+/* === P R O C E D U R E S ================================================= */
+
+void swap_guid(const ValueNode::Handle& a,const ValueNode::Handle& b)
+{
+ synfig::GUID old_a(a->get_guid());
+ a->set_guid(synfig::GUID());
+
+ synfig::GUID old_b(b->get_guid());
+ b->set_guid(synfig::GUID());
+
+ a->set_guid(old_b);
+ b->set_guid(old_a);
+}
+
+/* === M E T H O D S ======================================================= */
+
+Action::ValueNodeReplace::ValueNodeReplace():
+ is_undoable(true)
+{
+}
+
+Action::ParamVocab
+Action::ValueNodeReplace::get_param_vocab()
+{
+ ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
+
+ ret.push_back(ParamDesc("dest",Param::TYPE_VALUENODE)
+ .set_local_name(_("Destination ValueNode"))
+ .set_desc(_("ValueNode to replaced"))
+ );
+
+ ret.push_back(ParamDesc("src",Param::TYPE_VALUENODE)
+ .set_local_name(_("Source ValueNode"))
+ .set_desc(_("ValueNode that will replace the destination"))
+ );
+
+ return ret;
+}
+
+bool
+Action::ValueNodeReplace::is_candidate(const ParamList &x)
+{
+ return candidate_check(get_param_vocab(),x);
+}
+
+bool
+Action::ValueNodeReplace::set_param(const synfig::String& name, const Action::Param ¶m)
+{
+ if(name=="dest" && param.get_type()==Param::TYPE_VALUENODE)
+ {
+ dest_value_node=param.get_value_node();
+
+ return true;
+ }
+
+ if(name=="src" && param.get_type()==Param::TYPE_VALUENODE)
+ {
+ src_value_node=param.get_value_node();
+
+ return true;
+ }
+
+ return Action::CanvasSpecific::set_param(name,param);
+}
+
+bool
+Action::ValueNodeReplace::is_ready()const
+{
+ if(!dest_value_node || !src_value_node)
+ return false;
+ return Action::CanvasSpecific::is_ready();
+}
+
+void
+Action::ValueNodeReplace::perform()
+{
+ set_dirty(true);
+
+ if(dest_value_node == src_value_node)
+ throw Error(_("Attempted to replace valuenode with itself"));
+
+ if(dest_value_node->get_type() != src_value_node->get_type())
+ throw Error(_("You cannot replace ValueNodes with different types!"));
+
+ is_undoable=true;
+
+ if(!src_value_node->is_exported())
+ {
+ src_value_node->set_id(dest_value_node->get_id());
+ src_value_node->set_parent_canvas(dest_value_node->get_parent_canvas());
+
+ ValueNode::RHandle value_node(src_value_node);
+
+ if(!value_node.runique() && value_node.rcount()>1)
+ is_undoable=false; // !!!
+ }
+ else
+ is_undoable=false; // !!!
+
+ if(!is_undoable)
+ synfig::warning("ValueNodeReplace: Circumstances make undoing this action impossible at the current time. :(");
+
+ ValueNode::RHandle value_node(dest_value_node);
+
+ if(value_node.runique() || value_node.rcount()<=1)
+ throw Error(_("Nothing to replace."));
+
+ int replacements;
+
+ replacements=value_node->replace(src_value_node);
+ assert(replacements);
+ if(!replacements)
+ throw Error(_("Action Failure. This is a bug. Please report it."));
+ swap_guid(dest_value_node,src_value_node);
+
+ //src_value_node->parent_set.swap(dest_value_node->parent_set);
+
+ // synfig::info(get_local_name()+_(": ")+strprintf(_("Replaced %d ValueNode instances"),replacements));
+
+ // Signal that a layer has been inserted
+ if(get_canvas_interface())
+ {
+ get_canvas_interface()->signal_value_node_replaced()(dest_value_node,src_value_node);
+ }
+ else synfig::warning("CanvasInterface not set on action");
+
+}
+
+void
+Action::ValueNodeReplace::undo()
+{
+ if(!is_undoable)
+ throw Error(_("This action cannot be undone under these circumstances."));
+
+ set_dirty(true);
+
+ if(dest_value_node == src_value_node)
+ throw Error(_("Attempted to replace valuenode with itself"));
+
+ if(dest_value_node->get_type() != src_value_node->get_type())
+ throw Error(_("You cannot replace ValueNodes with different types!"));
+
+ ValueNode::RHandle value_node(src_value_node);
+
+ if(value_node.runique() || value_node.rcount()<=1)
+ throw Error(_("Nothing to replace."));
+
+ int replacements;
+
+ replacements=value_node->replace(dest_value_node);
+ assert(replacements);
+ if(!replacements)
+ throw Error(_("Action Failure. This is a bug. Please report it."));
+ swap_guid(dest_value_node,src_value_node);
+
+ //src_value_node->parent_set.swap(dest_value_node->parent_set);
+
+ // synfig::info(get_local_name()+_(": (Undo) ")+strprintf(_("Replaced %d ValueNode instances"),replacements));
+
+ src_value_node->set_id(String());
+ src_value_node->set_parent_canvas(0);
+
+ // Signal that a layer has been inserted
+ if(get_canvas_interface())
+ {
+ get_canvas_interface()->signal_value_node_replaced()(src_value_node,dest_value_node);
+ }
+ else synfig::warning("CanvasInterface not set on action");
+
+}
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