Multiple, simultaneous node editing spuport!!

..but will you be brave enough to try it? :)

tools/editor/multi_node_edit.cpp

@@ -0,0 +1,118 @@
+#include "multi_node_edit.h"
+#include "editor_node.h"
+
+bool MultiNodeEdit::_set(const StringName& p_name, const Variant& p_value){
+
+	Node *es = EditorNode::get_singleton()->get_edited_scene();
+	if (!es)
+		return false;
+
+	UndoRedo *ur=EditorNode::get_singleton()->get_undo_redo();
+
+	ur->create_action("MultiNode Set "+String(p_name));
+	for (const List<NodePath>::Element *E=nodes.front();E;E=E->next()) {
+
+		if (!es->has_node(E->get()))
+			continue;
+
+		Node*n=es->get_node(E->get());
+		if (!n)
+			continue;
+
+		ur->add_do_property(n,p_name,p_value);
+		ur->add_undo_property(n,p_name,n->get(p_name));
+
+	}
+
+	ur->commit_action();
+	return true;
+}
+
+bool MultiNodeEdit::_get(const StringName& p_name,Variant &r_ret) const {
+
+	Node *es = EditorNode::get_singleton()->get_edited_scene();
+	if (!es)
+		return false;
+
+	for (const List<NodePath>::Element *E=nodes.front();E;E=E->next()) {
+
+		if (!es->has_node(E->get()))
+			continue;
+
+		const Node*n=es->get_node(E->get());
+		if (!n)
+			continue;
+
+		bool found;
+		r_ret=n->get(p_name,&found);
+		if (found)
+			return true;
+
+	}
+
+	return false;
+}
+
+void MultiNodeEdit::_get_property_list( List<PropertyInfo> *p_list) const{
+
+	HashMap<String,PLData> usage;
+
+	Node *es = EditorNode::get_singleton()->get_edited_scene();
+	if (!es)
+		return;
+
+	int nc=0;
+
+	List<PLData*> datas;
+
+	for (const List<NodePath>::Element *E=nodes.front();E;E=E->next()) {
+
+		if (!es->has_node(E->get()))
+			continue;
+
+		Node*n=es->get_node(E->get());
+		if (!n)
+			continue;
+
+		List<PropertyInfo> plist;
+		n->get_property_list(&plist,true);
+
+		for(List<PropertyInfo>::Element *F=plist.front();F;F=F->next()) {
+
+			if (!usage.has(F->get().name)) {
+				PLData pld;
+				pld.uses=0;
+				pld.info=F->get();
+				usage[F->get().name]=pld;
+				datas.push_back(usage.getptr(F->get().name));
+			}
+
+			usage[F->get().name].uses++;
+		}
+
+		nc++;
+	}
+
+	for (List<PLData*>::Element *E=datas.front();E;E=E->next()) {
+
+		if (nc==E->get()->uses) {
+			p_list->push_back(E->get()->info);
+		}
+	}
+
+
+}
+
+void MultiNodeEdit::clear_nodes() {
+
+	nodes.clear();
+}
+
+void MultiNodeEdit::add_node(const NodePath& p_node){
+
+	nodes.push_back(p_node);
+}
+
+MultiNodeEdit::MultiNodeEdit()
+{
+}