ProxyPopupDateDropDownEditCell.java

/*
 * Copyright 2014 Red Hat, Inc. and/or its affiliates.
 *
 * 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.kie.workbench.common.widgets.decoratedgrid.client.widget.cells;

import java.util.Date;

import com.google.gwt.i18n.client.DateTimeFormat;
import org.kie.workbench.common.widgets.client.datamodel.AsyncPackageDataModelOracle;
import org.kie.workbench.common.widgets.decoratedgrid.client.widget.CellTableDropDownDataValueMapProvider;

/**
 * A Popup drop-down Editor proxy that delegates operation to different implementations depending on whether
 * the cell should represent a list of values or single value. The need arose from incomplete dependent enumeration
 * definitions; e.g. Fact.field1=['A', 'B'] Fact.field2[field1=A]=['A1', 'A2']; where no dependent enumeration has
 * been defined for Fact.field2[field1=B]. In this scenario a TextBox for field2 should be shown when field1=B
 */
public class ProxyPopupDateDropDownEditCell extends
                                            AbstractProxyPopupDropDownEditCell<Date, Date> {

    private DateTimeFormat format;

    public ProxyPopupDateDropDownEditCell( final String factType,
                                           final String factField,
                                           final AsyncPackageDataModelOracle dmo,
                                           final CellTableDropDownDataValueMapProvider dropDownManager,
                                           final boolean isReadOnly,
                                           final DateTimeFormat format ) {
        super( factType,
               factField,
               dmo,
               dropDownManager,
               isReadOnly );
        this.format = format;
    }

    @Override
    protected ProxyPopupDropDown<Date> getSingleValueEditor() {
        return new AbstractProxyPopupDropDownDatePicker( this ) {
            @Override
            public String convertToString( final Date value ) {
                return ProxyPopupDateDropDownEditCell.this.convertToString( value );
            }

            @Override
            public Date convertFromString( final String value ) {
                return ProxyPopupDateDropDownEditCell.this.convertFromString( value );
            }
        };
    }

    @Override
    protected ProxyPopupDropDown<Date> getMultipleValueEditor() {
        return new AbstractProxyPopupDropDownListBox<Date>( this ) {
            @Override
            public String convertToString( final Date value ) {
                return ProxyPopupDateDropDownEditCell.this.convertToString( value );
            }

            @Override
            public Date convertFromString( final String value ) {
                return ProxyPopupDateDropDownEditCell.this.convertFromString( value );
            }
        };
    }

    private String convertToString( final Date value ) {
        return ( value == null ? null : format.format( value ) );
    }

    private Date convertFromString( final String value ) {
        Date date = null;
        if ( value.length() > 0 ) {
            try {
                date = format.parse( value );
            } catch ( IllegalArgumentException e ) {
                date = new Date();
            }
        }
        return date;
    }

}