ObjectEditor.java

/*
 * Copyright 2015 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.screens.datamodeller.client.widgets.common.domain;

import javax.enterprise.event.Event;
import javax.enterprise.event.Observes;

import org.kie.workbench.common.screens.datamodeller.client.DataModelerContext;
import org.kie.workbench.common.screens.datamodeller.client.command.DataModelCommandBuilder;
import org.kie.workbench.common.screens.datamodeller.client.handlers.DomainHandlerRegistry;
import org.kie.workbench.common.screens.datamodeller.events.ChangeType;
import org.kie.workbench.common.screens.datamodeller.events.DataModelerEvent;
import org.kie.workbench.common.screens.datamodeller.events.DataObjectChangeEvent;
import org.kie.workbench.common.services.datamodeller.core.DataObject;

public abstract class ObjectEditor extends BaseEditor {

    protected DataObject dataObject;

    public ObjectEditor( DomainHandlerRegistry handlerRegistry,
            Event<DataModelerEvent> dataModelerEvent,
            DataModelCommandBuilder commandBuilder ) {
        super( handlerRegistry, dataModelerEvent, commandBuilder );
    }

    public DataObject getDataObject() {
        return dataObject;
    }

    protected abstract void loadDataObject( DataObject dataObject );

    @Override
    public void onContextChange( DataModelerContext context ) {
        super.onContextChange( context );
        if ( context == null ) {
            dataObject = null;
        } else {
            dataObject = context.getDataObject();
        }
        loadDataObject( dataObject );
    }

    protected void onDataObjectChange( @Observes DataObjectChangeEvent event ) {
        if ( event.isFromContext( context != null ? context.getContextId() : null ) &&
                !getName().equals( event.getSource() ) ) {
            loadDataObject( event.getCurrentDataObject() );
        }
    }

    protected DataObjectChangeEvent createDataObjectChangeEvent( ChangeType changeType ) {
        //check if data model is necessary
        return new DataObjectChangeEvent( changeType, getContext().getContextId(), getName(), getDataObject(), null, null, null );
    }
}