EventMapGrid.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.view.event;

import com.google.gwt.cell.client.FieldUpdater;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.text.shared.Renderer;
import com.google.gwt.user.cellview.client.Column;
import com.google.gwt.user.cellview.client.DataGrid;
import com.google.gwt.user.cellview.client.Header;
import com.google.gwt.user.cellview.client.SafeHtmlHeader;

import org.kaaproject.avro.ui.gwt.client.widget.grid.cell.ValueSelectionCell;
import org.kaaproject.kaa.common.dto.event.ApplicationEventAction;
import org.kaaproject.kaa.common.dto.event.ApplicationEventMapDto;
import org.kaaproject.kaa.server.admin.client.mvp.view.grid.AbstractKaaGrid;
import org.kaaproject.kaa.server.admin.client.util.Utils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class EventMapGrid extends AbstractKaaGrid<ApplicationEventMapDto, String> {

  public EventMapGrid(boolean editable) {
    super(Unit.PX, editable, true);
  }

  @Override
  protected float constructColumnsImpl(DataGrid<ApplicationEventMapDto> table) {
    float prefWidth = 0;

    prefWidth += constructStringColumn(table,
        Utils.constants.fqn(),
        new StringValueProvider<ApplicationEventMapDto>() {
          @Override
          public String getValue(ApplicationEventMapDto item) {
            return item.getFqn();
          }
        }, 160);


    final Renderer<ApplicationEventAction> actionRenderer = new Renderer<ApplicationEventAction>() {

      @Override
      public String render(ApplicationEventAction action) {
        return Utils.constants.getString(action.name().toLowerCase());
      }

      @Override
      public void render(ApplicationEventAction action,
                         Appendable appendable) throws IOException {
        appendable.append(render(action));
      }
    };

    if (enableActions) {
      List<ApplicationEventAction> actions = new ArrayList<>();
      for (ApplicationEventAction action : ApplicationEventAction.values()) {
        actions.add(action);
      }

      ValueSelectionCell<ApplicationEventAction> actionsCell = new ValueSelectionCell<>(actions,
          actionRenderer);

      Column<ApplicationEventMapDto, ApplicationEventAction> actionColumn =
          new Column<ApplicationEventMapDto, ApplicationEventAction>(actionsCell) {
            @Override
            public ApplicationEventAction getValue(ApplicationEventMapDto object) {
              return object.getAction();
            }
          };

      Header<SafeHtml> actionHeader = new SafeHtmlHeader(
          SafeHtmlUtils.fromSafeConstant(Utils.constants.action()));

      table.addColumn(actionColumn, actionHeader);
      actionColumn.setFieldUpdater(
          new FieldUpdater<ApplicationEventMapDto, ApplicationEventAction>() {
            @Override
            public void update(int index, ApplicationEventMapDto object,
                               ApplicationEventAction value) {
              object.setAction(value);
            }
          });
      table.setColumnWidth(actionColumn, 80, Unit.PX);
      prefWidth += 80;
    } else {
      prefWidth += constructStringColumn(table,
          Utils.constants.action(),
          new StringValueProvider<ApplicationEventMapDto>() {
            @Override
            public String getValue(ApplicationEventMapDto item) {
              return actionRenderer.render(item.getAction());
            }
          }, 80);
    }

    return prefWidth;
  }

  @Override
  protected String getObjectId(ApplicationEventMapDto value) {
    return value.getEventClassId();
  }

}