org.openlegacy.terminal.mvc.web.ScreenBindUtils.java Source code

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Here is the source code for org.openlegacy.terminal.mvc.web.ScreenBindUtils.java

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/*******************************************************************************
 * Copyright (c) 2014 OpenLegacy Inc.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     OpenLegacy Inc. - initial API and implementation
 *******************************************************************************/
package org.openlegacy.terminal.mvc.web;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.openlegacy.terminal.ScreenEntity;
import org.openlegacy.terminal.ScreenPojoFieldAccessor;
import org.openlegacy.terminal.TerminalSession;
import org.openlegacy.terminal.definitions.ScreenEntityDefinition;
import org.openlegacy.terminal.definitions.ScreenTableDefinition;
import org.openlegacy.terminal.definitions.ScreenTableDefinition.ScreenColumnDefinition;
import org.openlegacy.terminal.services.ScreenEntitiesRegistry;
import org.openlegacy.terminal.support.binders.MultyScreenTableBindUtil;
import org.openlegacy.terminal.utils.SimpleScreenPojoFieldAccessor;
import org.openlegacy.utils.ProxyUtil;
import org.springframework.ui.Model;

import java.text.MessageFormat;
import java.util.List;
import java.util.Map.Entry;
import java.util.Set;

import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;

public class ScreenBindUtils {

    private final static Log logger = LogFactory.getLog(ScreenBindUtils.class);

    @Inject
    private ScreenEntitiesRegistry entitiesRegistry;

    @Inject
    private MultyScreenTableBindUtil multyScreenTableBindUtil;

    /**
     * Collects multiple screens table, and sets it to the view
     * 
     * @param entity
     * @param uiModel
     * @param session
     * @param definition
     */
    public void bindCollectTable(TerminalSession session, Object entity, Model uiModel) {
        Object collectedEntity = multyScreenTableBindUtil.bindCollectTable(session, entity);
        if (collectedEntity != null) {
            String screenEntityName = ProxyUtil.getOriginalClass(entity.getClass()).getSimpleName();
            uiModel.addAttribute(StringUtils.uncapitalize(screenEntityName), collectedEntity);
        }
    }

    /**
     * Bind table input fields from http request to a screen entity
     * 
     * @param request
     * @param entityClass
     * @param screenEntity
     */
    public void bindTables(HttpServletRequest request, Class<?> entityClass, ScreenEntity screenEntity) {
        ScreenEntityDefinition entityDefinition = entitiesRegistry.get(entityClass);
        Set<Entry<String, ScreenTableDefinition>> tableDefinitions = entityDefinition.getTableDefinitions()
                .entrySet();
        ScreenPojoFieldAccessor fieldAccessor = new SimpleScreenPojoFieldAccessor(screenEntity);

        for (Entry<String, ScreenTableDefinition> tableDefinition : tableDefinitions) {
            ScreenTableDefinition tableDefinitionValue = tableDefinition.getValue();
            List<ScreenColumnDefinition> columnDefinitions = tableDefinitionValue.getColumnDefinitions();
            String fieldName = tableDefinition.getKey();
            if (!fieldAccessor.isExists(fieldName)) {
                logger.warn(
                        MessageFormat.format("Unable to find field named:{0} for binding http request", fieldName));
                continue;
            }
            List<?> rows = (List<?>) fieldAccessor.getFieldValue(fieldName);
            int rowNumber = 0;
            for (Object row : rows) {
                ScreenPojoFieldAccessor rowFieldAccessor = new SimpleScreenPojoFieldAccessor(row);
                for (ScreenColumnDefinition columnDefinition : columnDefinitions) {
                    if (columnDefinition.isEditable()) {

                        String value = request.getParameter(
                                MessageFormat.format("{0}_{1}", columnDefinition.getName(), rowNumber));
                        if (value != null) {
                            rowFieldAccessor.setFieldValue(columnDefinition.getName(), value);
                        }
                    }
                }
                String focus = request.getParameter(MessageFormat.format("focus_{0}", rowNumber));
                if (StringUtils.isNotEmpty(focus)) {
                    if (rowFieldAccessor.isExists(focus)) {
                        // TODO integrate row.focus method (need to be tested with live as400 - as400-menus
                        // ChangePrinterOutput/SelectPrinter)
                        int focusPosition = (tableDefinitionValue.getStartRow() - 1 + rowNumber)
                                * entityDefinition.getScreenSize().getColumns()
                                + tableDefinitionValue.getColumnDefinition(focus).getStartColumn();
                        screenEntity.setFocusField(String.valueOf(focusPosition));
                    }
                }
                rowNumber++;
            }
        }
    }
}