ConfigSchemaGrid.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.config;

import com.google.gwt.dom.client.Style;
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.event.RowActionEvent;
import org.kaaproject.kaa.common.dto.ConfigurationSchemaDto;
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 ConfigSchemaGrid extends BaseCtlSchemasGrid<ConfigurationSchemaDto> {

  private Column<ConfigurationSchemaDto, ConfigurationSchemaDto> downloadBaseSchemaColumn;
  private Column<ConfigurationSchemaDto, ConfigurationSchemaDto> downloadOverrideSchemaColumn;

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

      downloadBaseSchemaColumn = constructDownloadBaseSchemaColumnColumn("");
      table.addColumn(downloadBaseSchemaColumn, downloadBaseSchemaHeader);
      table.setColumnWidth(downloadBaseSchemaColumn, ACTION_COLUMN_WIDTH, Style.Unit.PX);
      result += ACTION_COLUMN_WIDTH;
    }

    if (!embedded && (downloadOverrideSchemaColumn == null
        || table.getColumnIndex(downloadOverrideSchemaColumn) == -1)) {
      Header<SafeHtml> downloadOverrideSchemaHeader = new SafeHtmlHeader(
          SafeHtmlUtils.fromSafeConstant(Utils.constants.downloadOverrideSchema()));

      downloadOverrideSchemaColumn = constructDownloadOverrideSchemaColumnColumn("");
      table.addColumn(downloadOverrideSchemaColumn, downloadOverrideSchemaHeader);
      table.setColumnWidth(downloadOverrideSchemaColumn, ACTION_COLUMN_WIDTH, Style.Unit.PX);
      result += ACTION_COLUMN_WIDTH;
    }
    return result;
  }

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

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

}