[belugin]

Благодаря Ивану, в табаксе есть код, выводящий истоячник для текущего поля. Вот он:

    Object              formControlEditField;
    TreeNode            runTreeNode;

    TreeNode getDataSourceNode()
    {
        int         dataSourceId;
        int         fieldExtId;
        str         dataMethodName;
        TreeNode    fieldNode;
    ;
        dataSourceId    = formControlEditField.dataSource();
        fieldExtId      = formControlEditField.dataField();
        dataMethodName  = formControlEditField.dataMethod();
        if (dataSourceId)
        {
            if (fieldExtId)
            {
                fieldNode = TreeNode::findNode(#TablesPath + #AOTRootPath + tableId2Name(currentForm.form().dataSource(dataSourceId).table()) + "\\Fields");
                if (fieldNode)
                    fieldNode = fieldNode.AOTfindChild(fieldId2Name(currentForm.form().dataSource(dataSourceId).table(), fieldExt2Id(fieldExtId)));
                if (fieldNode)
                    fieldNode.AOTnewWindow();
                return fieldNode;
            }
            else
            {
                if (dataMethodName)
                {
                    fieldNode = TreeNode::findNode(strFmt(#DataSourceMethodPath, #FormsPath + #AOTRootPath + currentForm.name(), currentForm.form().dataSource(dataSourceId).name(), dataMethodName));
                    if (fieldNode)
                        fieldNode.AOTedit();
                    else
                    {
                        fieldNode = TreeNode::findNode(strFmt(#MethodPath, #TablesPath + #AOTRootPath + tableId2Name(currentForm.form().dataSource(dataSourceId).table()), dataMethodName));
                        if (fieldNode)
                            fieldNode.AOTedit();
                    }
                }
            }
        }
        return null;
    }