net.jcreate.e3.table.html.HTMLTableHelper.java Source code

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Here is the source code for net.jcreate.e3.table.html.HTMLTableHelper.java

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/*
 * Copyright 2002-2005 the original author or authors.
 *
 * 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.
 */

/**
 *  E3??QQ:21523645 
 */
package net.jcreate.e3.table.html;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import net.jcreate.e3.table.NavRequest;
import net.jcreate.e3.table.PageInfo;
import net.jcreate.e3.table.SortInfo;
import net.jcreate.e3.table.StateInfo;
import net.jcreate.e3.table.WebContext;
import net.jcreate.e3.table.message.MessageSourceFactory;
import net.jcreate.e3.table.support.HttpServletRequestWebContext;
import net.jcreate.e3.table.support.TableConstants;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public abstract class HTMLTableHelper {

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

    private HTMLTableHelper() {

    }

    private static NavRequest getNavRequestFromState(String pTableID, WebContext pWebContext) {
        NavRequest result = new NavRequest();
        SessionStateManager stateManager = new SessionStateManager(pTableID, pWebContext);
        StateInfo stateInfo = stateManager.loadStateInfo();
        if (stateInfo == null) {
            return null;
        }
        SortInfo sortInfo = stateInfo.getSortInfo();
        if (sortInfo != null) {
            result.setSortProperty(sortInfo.getSortProperty());
            result.setSortDir(sortInfo.getSortDir());
        }
        PageInfo pageInfo = stateInfo.getPageInfo();
        if (pageInfo != null) {
            result.setStart(pageInfo.getStart());
            result.setPageSize(pageInfo.getPageSize());
        }
        return result;

    }

    public static NavRequest getNavRequest(String pTableID, WebContext pWebContext, int pPageSize) {

        Boolean enableStateManager = (Boolean) pWebContext
                .getSessionAttribute(TableConstants.ENABLED_STATE_MANAGER_PREFIX + pTableID);
        String start = pWebContext.getParameter(TableConstants.START_PARAM + "_" + pTableID);
        if (start == null) {//???????.
            if (enableStateManager != null) {
                if (enableStateManager.booleanValue() == true) {
                    NavRequest result = getNavRequestFromState(pTableID, pWebContext);
                    if (result != null) {
                        return result;
                    }
                }
            }
        }
        NavRequest result = new NavRequest();
        //?
        if (logger.isDebugEnabled()) {
            Map params = pWebContext.getParameterMap();
            java.util.Iterator paramKeys = params.keySet().iterator();
            while (paramKeys.hasNext()) {
                Object key = paramKeys.next();
                if (key instanceof String == false) {
                    continue;
                }
                Object value = params.get(key);

                if (value instanceof String[] == false) {
                    continue;
                }
                //?
                logger.debug((String) (key) + "=" + ((String[]) value)[0]);
            }
        }
        String pageSize = pWebContext.getParameter(TableConstants.PAGE_SIZE_PARAM + "_" + pTableID);
        String sortColumn = pWebContext.getParameter(TableConstants.SORT_PROPERTY_PARAM + "_" + pTableID);
        String sortName = pWebContext.getParameter(TableConstants.SORT_NAME_PARAM + "_" + pTableID);
        String sortDir = pWebContext.getParameter(TableConstants.SORT_DIR_PARAM + "_" + pTableID);

        if (start == null) {
            result.setStart(0);
            result.setPageSize(pPageSize);
        } else {
            result.setStart(Integer.parseInt(start));
            result.setPageSize(Integer.parseInt(pageSize));
        }

        result.setSortProperty(sortColumn);
        result.setSortDir(sortDir);
        result.setSortName(sortName);
        return result;

    }

    /**
     * TODO: ??? 
     * @param pTableID
     * @param pRequest
     * @return
     */
    public static NavRequest getNavRequest(String pTableID, HttpServletRequest pRequest, int pPageSize) {
        return getNavRequest(pTableID, new HttpServletRequestWebContext(pRequest), pPageSize);
    }

    /**
     * TODO: ??? 
     * @param pTableID
     * @param pRequest
     * @return
     */
    public static NavRequest getNavRequest(String pTableID, HttpServletRequest pRequest) {
        String strPageSize = MessageSourceFactory.getInstance().getMessage(TableConstants.PAGE_SIZE_KEY, null,
                String.valueOf(TableConstants.DEFAULT_PAGE_SIZE), null);
        int pageSize = TableConstants.DEFAULT_PAGE_SIZE;
        try {
            pageSize = Integer.parseInt(strPageSize);
        } catch (Exception ex) {
            logger.warn("?:[" + strPageSize + "]?!:"
                    + TableConstants.DEFAULT_PAGE_SIZE);
        }

        return getNavRequest(pTableID, pRequest, pageSize);
    }

}