/* 
 * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
 * 
 *  This program 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; version 2 of the License.
 *
 *  This program 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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#include "linux_utilities/plugin_editor_base.h"
#include "grtdb/editor_user_role.h"
#include "grtdb/db_object_helpers.h"
#include "treemodel_wrapper.h"
#include <gtkmm/notebook.h>
#include <gtkmm/image.h>
#include <gtkmm/combobox.h>
#include <gtkmm/builder.h>
#include "text_list_columns_model.h"

//==============================================================================
//
//==============================================================================
class DbMySQLRoleEditor : public PluginEditorBase
{
  bec::RoleEditorBE                 *_be;
  Glib::RefPtr<ListModelWrapper>     _role_tree_model;
  Glib::RefPtr<ListModelWrapper>     _role_objects_model;
  Glib::RefPtr<ListModelWrapper>     _role_privs_model;
  Gtk::Entry                        *_entry;
  Gtk::TreeView                     *_role_tree_tv;
  Gtk::TreeView                     *_role_objects_tv;
  Gtk::TreeView                     *_role_privs_tv;
  Gtk::ComboBox                     *_parent_combo;
  TextListColumnsModel               _parent_combo_model;
  bool                               _refreshing;

  virtual bec::BaseEditor *get_be();

  void objects_tv_cursor_changed();

  void refresh_objects();
  void refresh_privileges();

  void clear_privileges();
  void change_parent();
  
  void set_name(const std::string& nm)
  {
    _be->set_name(nm);
    _signal_title_changed.emit(_be->get_title());
  }
  
 public:
  DbMySQLRoleEditor(grt::Module *m, bec::GRTManager *grtm, const grt::BaseListRef &args);
  ~DbMySQLRoleEditor()
  {
    delete _be;
  }

  virtual void do_refresh_form_data();

  void on_object_drop(const Glib::RefPtr<Gdk::DragContext>& context, int x, int y,
                       const Gtk::SelectionData& selection_data, guint info, guint time);

  virtual bool switch_edited_object(bec::GRTManager *grtm, const grt::BaseListRef &args);
};




DbMySQLRoleEditor::DbMySQLRoleEditor(grt::Module *m, bec::GRTManager *grtm, const grt::BaseListRef &args)
    : PluginEditorBase(m, grtm, args, "modules/data/editor_role.glade")
    , _be(new bec::RoleEditorBE(grtm, db_RoleRef::cast_from(args[0]), get_rdbms_for_db_object(args[0])))
    , _refreshing(false)
{
  xml()->get_widget("mysql_role_editor_notebook", _editor_notebook);

  _be->set_refresh_ui_slot(sigc::mem_fun(this, &DbMySQLRoleEditor::refresh_form_data));

  _editor_notebook->reparent(*this);
  _editor_notebook->show();
  
  {
    Gtk::Image *image;
    xml()->get_widget("image1", image);
    
    image->set(ImageCache::get_instance()->image_from_filename("db.Role.editor.48x48.png", false));
  }

  bind_entry_and_be_setter("name_entry", this, &DbMySQLRoleEditor::set_name);

  xml()->get_widget("parent_combo", _parent_combo);
  setup_combo_for_string_list(_parent_combo);

  xml()->get_widget("roles_tv", _role_tree_tv);
  xml()->get_widget("objects_tv", _role_objects_tv);
  xml()->get_widget("privs_tv", _role_privs_tv);
  
  Gtk::Button *button;
  xml()->get_widget("clear_privs_button", button);
  button->signal_clicked().connect(sigc::mem_fun(this, &DbMySQLRoleEditor::clear_privileges));

  _role_tree_model    = TreeModelWrapper::create(_be->get_role_tree(), _role_tree_tv, "RoleTree");
  _role_objects_model = ListModelWrapper::create(_be->get_object_list(), _role_objects_tv, "RoleObjectsTree");
  _role_privs_model   = ListModelWrapper::create(_be->get_privilege_list(), _role_privs_tv, "RolePrivsTree");

  _role_tree_tv->set_model(_role_tree_model);
  _role_objects_tv->set_model(_role_objects_model);
  _role_privs_tv->set_model(_role_privs_model);

  _role_tree_model->model().append_string_column(bec::RoleTreeBE::Name, _("Role Hierarchy"), RO, NO_ICON);

  _role_privs_model->model().append_check_column(bec::RolePrivilegeListBE::Enabled, "", EDITABLE, TOGGLE_BY_GTKMM);
  _role_privs_model->model().append_string_column(bec::RolePrivilegeListBE::Name, _("Privileges for Selected Object"), RO, NO_ICON);

  _role_objects_model->model().append_string_column(bec::RoleObjectListBE::Name, _("Objects"), RO, WITH_ICON);

  show_all();
  
  refresh_form_data();

  _parent_combo->signal_changed().connect(sigc::mem_fun(this, &DbMySQLRoleEditor::change_parent));
  
  _role_objects_tv->signal_cursor_changed().connect(sigc::mem_fun(this, &DbMySQLRoleEditor::objects_tv_cursor_changed));

  // Setup DnD
  std::vector<Gtk::TargetEntry> targets;
  targets.push_back(Gtk::TargetEntry("x-mysql-wb/db.DatabaseObject", Gtk::TARGET_SAME_APP));
  _role_objects_tv->drag_dest_set(targets, Gtk::DEST_DEFAULT_ALL,Gdk::ACTION_COPY);
  _role_objects_tv->signal_drag_data_received().connect(sigc::mem_fun(this, &DbMySQLRoleEditor::on_object_drop));
}

//------------------------------------------------------------------------------
bool DbMySQLRoleEditor::switch_edited_object(bec::GRTManager *grtm, const grt::BaseListRef &args)
{
  bec::RoleEditorBE *old_be = _be;

  _be = new bec::RoleEditorBE(grtm, db_RoleRef::cast_from(args[0]), get_rdbms_for_db_object(args[0]));

  _be->set_refresh_ui_slot(sigc::mem_fun(this, &DbMySQLRoleEditor::refresh_form_data));

  _role_tree_model    = TreeModelWrapper::create(_be->get_role_tree(), _role_tree_tv, "RoleTree");
  _role_objects_model = ListModelWrapper::create(_be->get_object_list(), _role_objects_tv, "RoleObjectsTree");
  _role_privs_model   = ListModelWrapper::create(_be->get_privilege_list(), _role_privs_tv, "RolePrivsTree");

  _role_tree_tv->set_model(_role_tree_model);
  _role_objects_tv->set_model(_role_objects_model);
  _role_privs_tv->set_model(_role_privs_model);

  _role_tree_tv->remove_all_columns();
  _role_objects_tv->remove_all_columns();
  _role_privs_tv->remove_all_columns();

  _role_tree_model->model().append_string_column(bec::RoleTreeBE::Name, _("Role Hierarchy"), RO, NO_ICON);

  _role_privs_model->model().append_check_column(bec::RolePrivilegeListBE::Enabled, "", EDITABLE, TOGGLE_BY_GTKMM);
  _role_privs_model->model().append_string_column(bec::RolePrivilegeListBE::Name, _("Privileges for Selected Object"), RO, NO_ICON);

  _role_objects_model->model().append_string_column(bec::RoleObjectListBE::Name, _("Objects"), RO, WITH_ICON);

  refresh_form_data();

  delete old_be;

  return true;
}

//------------------------------------------------------------------------------
bec::BaseEditor *DbMySQLRoleEditor::get_be()
{
  return _be;
}

//------------------------------------------------------------------------------
void DbMySQLRoleEditor::refresh_objects()
{
  _role_objects_tv->unset_model();
  _role_objects_model->refresh();
  _role_objects_tv->set_model(_role_objects_model);
}

//------------------------------------------------------------------------------
void DbMySQLRoleEditor::refresh_privileges()
{
  _role_privs_tv->unset_model();
  _role_privs_model->refresh();
  _role_privs_tv->set_model(_role_privs_model);
}

//------------------------------------------------------------------------------
void DbMySQLRoleEditor::clear_privileges()
{
  _be->get_privilege_list()->remove_all();
  refresh_privileges();
}

//------------------------------------------------------------------------------
void DbMySQLRoleEditor::change_parent()
{
  if (_refreshing)
    return;
  std::string old_parent= _be->get_parent_role();

  if (_parent_combo->get_active())
  {
    Gtk::TreeRow row= *_parent_combo->get_active();
    _be->set_parent_role(row[_parent_combo_model.item]);
  }
  else
    _be->set_parent_role("");
  if (old_parent != _be->get_parent_role())
    do_refresh_form_data();
}

//------------------------------------------------------------------------------
void DbMySQLRoleEditor::do_refresh_form_data()
{
  Gtk::Entry *entry;

  xml()->get_widget("name_entry", entry);
  entry->set_text(_be->get_name());

  _signal_title_changed.emit(_be->get_title());

  std::vector<std::string> c= _be->get_role_list();  
  _refreshing = true;
  _parent_combo->set_model(model_from_string_list(c, &_parent_combo_model));
  _parent_combo->set_row_span_column(0);
  
  std::vector<std::string>::const_iterator i= std::find(c.begin(), c.end(), _be->get_parent_role());
  if (i != c.end())
    _parent_combo->set_active(i - c.begin());
  else
    _parent_combo->set_active(0);

  _role_tree_tv->unset_model();
  _be->get_role_tree()->refresh();
  _role_tree_model->refresh();
  _role_tree_tv->set_model(_role_tree_model);
  _role_tree_tv->expand_all();

  refresh_objects();
  refresh_privileges();
  _refreshing = false;
}

//------------------------------------------------------------------------------
void DbMySQLRoleEditor::on_object_drop(const Glib::RefPtr<Gdk::DragContext>& context
                                       ,int x, int y
                                       ,const Gtk::SelectionData& selection_data
                                       ,guint info, guint time)
{
  bool dnd_status = false;
  if ( selection_data.get_target() == "x-mysql-wb/db.DatabaseObject" )
  {
    if (selection_data.get_length() > 0)
    {
      std::list<db_DatabaseObjectRef> objects;
      db_CatalogRef catalog(db_CatalogRef::cast_from(_be->get_role()->owner()));

      objects= bec::CatalogHelper::dragdata_to_dbobject_list(catalog, selection_data.get_data_as_string());
        
      for (std::list<db_DatabaseObjectRef>::const_iterator iter= objects.begin();
           iter != objects.end(); ++iter)
        _be->add_object(*iter);
    }

    dnd_status = true;
    do_refresh_form_data();
  }

  context->drag_finish(dnd_status, false, time);
}

//------------------------------------------------------------------------------

void DbMySQLRoleEditor::objects_tv_cursor_changed()
{
  Gtk::TreeModel::iterator  iter       = _role_objects_tv->get_selection()->get_selected();
  bec::NodeId               obj_nodeid = _role_objects_model->node_for_iter(iter);

  if ( obj_nodeid.is_valid() )
  {
    _be->get_object_list()->set_selected_node(obj_nodeid);
    refresh_privileges();
  }
}

//------------------------------------------------------------------------------
extern "C"
{
  GUIPluginBase *createDbMysqlRoleEditor(grt::Module *m, bec::GRTManager *grtm, const grt::BaseListRef &args)
  {
    return Gtk::manage(new DbMySQLRoleEditor(m, grtm, args));
  }
};
