DynamicFormHandlerGenerator.java

/*
 * Copyright 2016 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.forms.dynamic.client.init.impl;

import javax.enterprise.context.Dependent;
import javax.inject.Inject;

import org.jboss.errai.validation.client.dynamic.DynamicValidator;
import org.kie.workbench.common.forms.dynamic.client.helper.MapModelBindingHelper;
import org.kie.workbench.common.forms.dynamic.client.init.FormHandlerGenerator;
import org.kie.workbench.common.forms.dynamic.client.processing.engine.handling.DynamicModelValidator;
import org.kie.workbench.common.forms.dynamic.service.shared.DynamicContext;
import org.kie.workbench.common.forms.dynamic.service.shared.impl.MapModelRenderingContext;
import org.kie.workbench.common.forms.dynamic.service.shared.impl.validation.DynamicModelConstraints;
import org.kie.workbench.common.forms.model.JavaModel;
import org.kie.workbench.common.forms.processing.engine.handling.FormHandler;
import org.kie.workbench.common.forms.processing.engine.handling.FormValidator;
import org.kie.workbench.common.forms.processing.engine.handling.impl.FieldChangeHandlerManagerImpl;
import org.kie.workbench.common.forms.processing.engine.handling.impl.FormHandlerImpl;
import org.kie.workbench.common.forms.processing.engine.handling.impl.FormValidatorImpl;

@Dependent
@DynamicContext
public class DynamicFormHandlerGenerator implements FormHandlerGenerator<MapModelRenderingContext> {

    protected DynamicValidator validator;

    private MapModelBindingHelper helper;

    @Inject
    public DynamicFormHandlerGenerator(DynamicValidator validator,
                                       MapModelBindingHelper helper) {
        this.validator = validator;
        this.helper = helper;
    }

    @Override
    public FormHandler generateFormHandler(MapModelRenderingContext context) {

        DynamicModelValidator dynamicValidator = new DynamicModelValidator(validator);

        if (context.getRootForm().getModel() instanceof JavaModel) {
            DynamicModelConstraints constraints = context.getModelConstraints().get(((JavaModel) context.getRootForm().getModel()).getType());

            if (constraints != null) {
                dynamicValidator.setModelConstraints(constraints);
            }
        }

        FormValidator formValidator = new FormValidatorImpl(dynamicValidator);

        FormHandler handler = new FormHandlerImpl(formValidator,
                                                  new FieldChangeHandlerManagerImpl());

        if (context.getParentContext() == null) {
            helper.initContext(context);
        }

        return handler;
    }
}