EndpointProfilesActivity.java

/*
 * Copyright 2014-2016 CyberVision, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.kaaproject.kaa.server.admin.client.mvp.activity;

import com.google.gwt.activity.shared.AbstractActivity;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.EventBus;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.place.shared.Place;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.AcceptsOneWidget;

import org.kaaproject.avro.ui.gwt.client.util.BusyAsyncCallback;
import org.kaaproject.avro.ui.gwt.client.widget.grid.event.RowActionEvent;
import org.kaaproject.avro.ui.gwt.client.widget.grid.event.RowActionEventHandler;
import org.kaaproject.kaa.common.dto.EndpointGroupDto;
import org.kaaproject.kaa.server.admin.client.KaaAdmin;
import org.kaaproject.kaa.server.admin.client.mvp.ClientFactory;
import org.kaaproject.kaa.server.admin.client.mvp.data.EndpointProfileDataProvider;
import org.kaaproject.kaa.server.admin.client.mvp.place.EndpointProfilePlace;
import org.kaaproject.kaa.server.admin.client.mvp.place.EndpointProfilesPlace;
import org.kaaproject.kaa.server.admin.client.mvp.view.BaseListView;
import org.kaaproject.kaa.server.admin.client.mvp.view.EndpointProfilesView;
import org.kaaproject.kaa.server.admin.client.util.Utils;

import java.util.ArrayList;
import java.util.List;

public class EndpointProfilesActivity extends AbstractActivity implements BaseListView.Presenter {

  protected final ClientFactory clientFactory;
  private EndpointProfilesView listView;
  private EndpointProfilesPlace place;
  private String applicationId;
  private EndpointProfileDataProvider dataProvider;
  private EndpointGroupDto groupAll;
  private List<HandlerRegistration> registrations = new ArrayList<>();

  /**
   * Instantiates a new EndpointProfilesActivity.
   */
  public EndpointProfilesActivity(EndpointProfilesPlace place, ClientFactory clientFactory) {
    this.place = place;
    this.clientFactory = clientFactory;
    this.applicationId = place.getApplicationId();
  }

  @Override
  public void start(AcceptsOneWidget containerWidget, EventBus eventBus) {
    listView = clientFactory.getEndpointProfilesView();
    dataProvider = new EndpointProfileDataProvider(listView.getListWidget(),
        listView, this.applicationId);
    listView.setPresenter(this);
    bind();
    containerWidget.setWidget(listView.asWidget());
  }

  private void bind() {

    listView.clearError();

    registrations.add(listView.getResetButton().addClickHandler(new ClickHandler() {
      @Override
      public void onClick(ClickEvent clickEvent) {
        reset();
      }
    }));

    registrations.add(listView.getRowActionsSource().addRowActionHandler(
        new RowActionEventHandler<String>() {
          @Override
          public void onRowAction(RowActionEvent<String> event) {
            String id = event.getClickedId();
            if (event.getAction() == RowActionEvent.CLICK) {
              goTo(new EndpointProfilePlace(applicationId, id));
            } else if (event.getAction() == RowActionEvent.DELETE) {
              deleteEntity(id, new BusyAsyncCallback<Void>() {
                @Override
                public void onFailureImpl(Throwable caught) {
                  Utils.handleException(caught, listView);
                }

                @Override
                public void onSuccessImpl(Void result) {
                  dataProvider.update();
                }
              });
            }
          }
        }));

    registrations.add(listView.getEndpointGroupsInfo().addValueChangeHandler(
        new ValueChangeHandler<EndpointGroupDto>() {
          @Override
          public void onValueChange(ValueChangeEvent<EndpointGroupDto> valueChangeEvent) {
            findByEndpointGroup();
          }
        }));

    registrations.add(listView.getFindEndpointButton().addClickHandler(new ClickHandler() {
      @Override
      public void onClick(ClickEvent clickEvent) {
        findByEndpointKeyHash();
      }
    }));

    final Place previousPlace = place.getPreviousPlace();
    if (previousPlace != null) {
      listView.setBackEnabled(true);
      registrations.add(listView.getBackButton().addClickHandler(new ClickHandler() {
        public void onClick(ClickEvent event) {
          goTo(previousPlace);
        }
      }));
    }
    registrations.add(listView.getEndpointGroupButton().addValueChangeHandler(
        new ValueChangeHandler<Boolean>() {
          @Override
          public void onValueChange(ValueChangeEvent<Boolean> event) {
            findByEndpointGroup();
          }
        }));
    registrations.add(listView.getEndpointKeyHashButton().addValueChangeHandler(
        new ValueChangeHandler<Boolean>() {
          @Override
          public void onValueChange(ValueChangeEvent<Boolean> event) {
            findByEndpointKeyHash();
          }
        }));


    reset();
  }


  private void findByEndpointGroup() {
    listView.getEndpointGroupButton().setValue(true);
    listView.getEndpointKeyHashButton().setValue(false);
    dataProvider.setNewGroup(listView.getEndpointGroupsInfo().getValue().getId());
    dataProvider.update();
  }

  private void findByEndpointKeyHash() {
    listView.getEndpointGroupButton().setValue(false);
    listView.getEndpointKeyHashButton().setValue(true);
    listView.clearError();
    String value = listView.getEndpointKeyHashTextBox().getValue();
    dataProvider.setEndpointKeyHash(value);
    dataProvider.update();
  }

  private void reset() {
    listView.getEndpointKeyHashTextBox().setValue("");
    listView.getEndpointKeyHashButton().setValue(false);
    listView.getEndpointGroupButton().setValue(true);
    listView.getEndpointGroupsInfo().reset();
    getGroupsList();
  }

  private void getGroupsList() {
    KaaAdmin.getDataSource().loadEndpointGroups(applicationId,
        new AsyncCallback<List<EndpointGroupDto>>() {
          @Override
          public void onFailure(Throwable caught) {
            Utils.handleException(caught, listView);
          }

          @Override
          public void onSuccess(List<EndpointGroupDto> result) {
            populateListBoxAndGrid(result);
          }
        });
  }

  private void populateListBoxAndGrid(List<EndpointGroupDto> result) {
    for (EndpointGroupDto endGroup : result) {
      if (endGroup.getWeight() == 0) {
        groupAll = endGroup;
        listView.getEndpointGroupsInfo().setValue(groupAll, true);
      }
    }
    listView.getEndpointGroupsInfo().setAcceptableValues(result);
  }

  @Override
  public void goTo(Place place) {
    clientFactory.getPlaceController().goTo(place);
  }

  @Override
  public void onStop() {
    for (HandlerRegistration registration : registrations) {
      registration.removeHandler();
    }
    registrations.clear();
  }

  private void deleteEntity(String endpointKeyHash, AsyncCallback<Void> callback) {
    KaaAdmin.getDataSource().removeEndpointProfileByKeyHash(endpointKeyHash, callback);
  }

}