AbstractFormLayoutTemplateGenerator.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.commons.layout;

import java.util.List;

import org.kie.workbench.common.forms.model.FieldDefinition;
import org.kie.workbench.common.forms.model.FormDefinition;
import org.kie.workbench.common.forms.model.FormLayoutComponent;
import org.uberfire.ext.layout.editor.api.editor.LayoutColumn;
import org.uberfire.ext.layout.editor.api.editor.LayoutComponent;
import org.uberfire.ext.layout.editor.api.editor.LayoutRow;
import org.uberfire.ext.layout.editor.api.editor.LayoutTemplate;

public abstract class AbstractFormLayoutTemplateGenerator implements FormLayoutTemplateGenerator {

    @Override
    public void generateLayoutTemplate(FormDefinition formDefinition) {

        formDefinition.setLayoutTemplate(new LayoutTemplate());

        addFieldsToTemplate(formDefinition.getLayoutTemplate(),
                            formDefinition.getFields(),
                            formDefinition.getId());
    }

    @Override
    public void updateLayoutTemplate(FormDefinition form,
                                     List<FieldDefinition> newFields) {

        newFields.forEach(newField -> {
            if (form.getFieldById(newField.getId()) == null) {
                form.getFields().add(newField);
            }
        });

        if (form.getLayoutTemplate() == null || form.getLayoutTemplate().isEmpty()) {
            generateLayoutTemplate(form);
            return;
        }

        addFieldsToTemplate(form.getLayoutTemplate(),
                            newFields,
                            form.getId());
    }

    protected void addFieldsToTemplate(LayoutTemplate template,
                                       List<FieldDefinition> fields,
                                       String formId) {
        fields.forEach(field -> {
            LayoutComponent layoutComponent = new LayoutComponent(getDraggableType());
            layoutComponent.addProperty(FormLayoutComponent.FORM_ID,
                                        formId);
            layoutComponent.addProperty(FormLayoutComponent.FIELD_ID,
                                        field.getId());

            LayoutColumn column = new LayoutColumn("12");
            column.add(layoutComponent);

            LayoutRow row = new LayoutRow();
            row.add(column);

            template.addRow(row);
        });
    }
}