LogSchemaGrid.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.log;

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.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.ActionButtonCell;
import org.kaaproject.avro.ui.gwt.client.widget.grid.cell.ActionButtonCell.ActionListener;
import org.kaaproject.avro.ui.gwt.client.widget.grid.cell.ActionButtonCell.ActionValidator;
import org.kaaproject.avro.ui.gwt.client.widget.grid.event.RowActionEvent;
import org.kaaproject.kaa.common.dto.logs.LogSchemaDto;
import org.kaaproject.kaa.server.admin.client.mvp.view.grid.KaaRowAction;
import org.kaaproject.kaa.server.admin.client.mvp.view.schema.BaseCtlSchemasGrid;
import org.kaaproject.kaa.server.admin.client.util.Utils;

public class LogSchemaGrid extends BaseCtlSchemasGrid<LogSchemaDto> {

  private Column<LogSchemaDto, LogSchemaDto> downloadLibraryColumn;

  @Override
  protected float constructActions(DataGrid<LogSchemaDto> table, float prefWidth) {
    float result = super.constructActions(table, prefWidth);
    if (!embedded
        && (downloadLibraryColumn == null || table.getColumnIndex(downloadLibraryColumn) == -1)) {
      Header<SafeHtml> downloadLibraryHeader = new SafeHtmlHeader(
          SafeHtmlUtils.fromSafeConstant(Utils.constants.downloadRecordLibrary()));

      downloadLibraryColumn = constructDownloadLibraryColumn("");
      table.addColumn(downloadLibraryColumn, downloadLibraryHeader);
      table.setColumnWidth(downloadLibraryColumn, ACTION_COLUMN_WIDTH, Unit.PX);
      result += ACTION_COLUMN_WIDTH;
    }
    if (enableActions) {
      if (deleteColumn == null || table.getColumnIndex(deleteColumn) == -1) {
        Header<SafeHtml> deleteHeader = new SafeHtmlHeader(
            SafeHtmlUtils.fromSafeConstant(
                embedded ? Utils.constants.remove() : Utils.constants.delete()));

        deleteColumn = constructDeleteColumn("");
        table.addColumn(deleteColumn, deleteHeader);
        table.setColumnWidth(deleteColumn, ACTION_COLUMN_WIDTH, Unit.PX);
        result += ACTION_COLUMN_WIDTH;
      }

    }
    return result;
  }

  private Column<LogSchemaDto, LogSchemaDto> constructDownloadLibraryColumn(String text) {
    ActionButtonCell<LogSchemaDto> cell = new ActionButtonCell<>(
        Utils.resources.download_grey(), text, embedded,
        new ActionListener<LogSchemaDto>() {
          @Override
          public void onItemAction(LogSchemaDto value) {
            Integer logSchemaVersion = value.getVersion();
            RowActionEvent<String> rowDownloadLibraryEvent = new RowActionEvent<>(
                String.valueOf(logSchemaVersion), KaaRowAction.DOWNLOAD_LOG_SCHEMA_LIBRARY);
            fireEvent(rowDownloadLibraryEvent);
          }
        }, new ActionValidator<LogSchemaDto>() {
          @Override
          public boolean canPerformAction(LogSchemaDto value) {
            return !embedded;
          }
        });
    Column<LogSchemaDto, LogSchemaDto> column = new Column<LogSchemaDto, LogSchemaDto>(cell) {
      @Override
      public LogSchemaDto getValue(LogSchemaDto item) {
        return item;
      }
    };
    return column;
  }


}