Fast extension sample

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Contents

This sample example show how to fastly extend OpenKM features with JSP, HTML, CSS and JavaScript technologies using OpenKM Java API and how to communicate with JavaScript GWT public functions (Javascript_API).

Description

  • ToolBar
  • Button one goes to main home screen
  • Button two goes to Sample1
  • Button tree goes to Sample2


Project folders and files ( eclipse screenshot )

User guide 533.png

Implementation details

index.jsp

Index.jsp controls iframe height with simple javascript code.

Other important thing is, for example after upload a document ( Sample 2 ) we use request var urlToOpen to indicate which url should be opened

 
String urlToOpen = URLDecoder.decode(WebUtils.getString(request, "urlToOpen"),"UTF-8");
if (urlToOpen.equals("")) {
  urlToOpen = "home.jsp";
}


menu.jsp

Has menu url definitions.

User guide 534.png


home.jsp

Main home screen.

User guide 530.png

Sample1

Is composed by 4 files:

  • action.jsp ( the main controler what has all logic ).
  • distributor.jsp ( the main layer with two columns at 50% ).
  • full_list.jsp ( show full list with no JavaScript special control ).
  • filtered_list.jsp ( show filtered list with no JavaScript special control ).

action.jsp the controler

<%@page import="java.util.Map"%>
<%@page import="java.util.HashMap"%>
<%@page import="java.util.List"%>
<%@page import="java.util.ArrayList"%>
<%@ page import="java.text.SimpleDateFormat" %>
<%@ page import="java.io.IOException" %>
<%@ page import="org.slf4j.Logger" %>
<%@ page import="org.slf4j.LoggerFactory" %>
<%@ page import="com.openkm.bean.Document" %>
<%@ page import="com.openkm.util.WebUtils" %>
<%@ page import="com.openkm.api.OKMDocument" %>
<%@ page extends="com.openkm.extension.servlet.BaseServlet" %>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%!
private static Logger log = LoggerFactory.getLogger("com.openkm.sample");
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException,
		ServletException {
	String action = WebUtils.getString(request, "action");		
	try {
		list(request, response);
	} catch (Exception e) {
		log.error(e.getMessage(), e);
		sendErrorRedirect(request, response, e);
	}
}
 
// Used by fileupload return and filter
public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException,
ServletException {
	String action = WebUtils.getString(request, "action");
	try {
		list(request, response);
	} catch (Exception e) {
		log.error(e.getMessage(), e);
		sendErrorRedirect(request, response, e);
	}
}
 
private void list(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, Exception {
	SimpleDateFormat df = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
	String docPath = (String) request.getAttribute("docPath");
	String nameFilter = WebUtils.getString(request,"nameFilter");
 
	// Pending docs
	List<Map<String,String>> pendingDocMaps = new ArrayList<Map<String,String>>();
	for ( Document doc : OKMDocument.getInstance().getChildren(null, "/okm:root")) {
		Map<String,String> docMap = new HashMap<String,String>();
		docMap.put("name",doc.getPath().substring(doc.getPath().lastIndexOf("/")+1));
		docMap.put("uuid",doc.getUuid());
		docMap.put("path",doc.getPath());
		docMap.put("mimeType",doc.getMimeType());
		docMap.put("lastModified", df.format(doc.getLastModified().getTime()));
		pendingDocMaps.add(docMap);
	}
 
	ServletContext sc = getServletContext();
	sc.setAttribute("docPath",docPath);
	sc.setAttribute("nameFilter",nameFilter);
	sc.setAttribute("pendingDocuments",pendingDocMaps);
	sc.getRequestDispatcher("/sample/sample2/distributor.jsp").forward(request, response);
}%>

ditributor.jsp the main layer

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  <link rel="stylesheet" type="text/css" href="<%=request.getContextPath() %>/sample/css/style.css" />
  <script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.7.1.min.js"></script>
  <script type="text/javascript" src="<%=request.getContextPath() %>/js/vanadium-min.js" ></script>
</head>
<body>
	<table width="100%">
		<tbody>
		<tr>
			<td valign="top" width="50%">
				<jsp:include page="/sample/sample1/full_list.jsp"></jsp:include>
			</td>
			<td valign="top" width="10"></td>
			<td valign="top" width="50%">
				<jsp:include page="/sample/sample1/filtered_list.jsp"></jsp:include>
			</td>
		</tr>
		</tbody>
	</table>
</body>
</html>

full_list.jsp Pay attention at javascript function go, which call parent.parent.jsOpenPathByUuid(uuid). jsOpenPathByUuid is a GWT public functions what can be used to jump to some specific document, folder etc. Here Javascript API there's a complete list of GWT javascript public functions.

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<script type="text/javascript">
	// Note the parent.parent call because iframe is into other iframe
    function go(uuid) {
        alert('Document UUID:'+uuid);
    	parent.parent.jsOpenPathByUuid(uuid);
    }
</script>
<h1>Full list of /okm:root documents</h1>
<table class="results" style="white-space: nowrap;" cellpadding="3" width="100%">
    <thead>
      <tr>
        <th></th><th>Author</th><th>Document</th><th>Date</th><th></th>
      </tr>
    </thead>
    <tbody>
    	<c:forEach var="document" items="${leftDocsMaps}" varStatus="row">
    	<tr>
    		<td valign="center"><img src="<%=request.getContextPath() %>/mime/${document.mimeType}"/></td>
    		<td>${document.author}</td>
    		<td>${document.name}</td>
    		<td>${document.lastModified}</td>
    		<td align="center">
    		 <a href="javascript:go('${document.uuid}')"><img src="<%=request.getContextPath() %>/sample/img/action/goto_document.gif" alt="Show document" title="Show document"/></a>
    		 </td>
    	</tr>
    	</c:forEach>
    </tbody>
</table>


User guide 531.png

Sample2

Is composed by 4 files:

  • action.jsp ( the main controler what has all logic ).
  • add_form.jsp ( form to upload a new document )
  • distributor.jsp ( the main layer with two columns at 50% with javascript ).
  • full_list.jsp ( show full list with JavaScript special control for table height).
  • pending.jsp ( static content ).


action.jsp the controler

<%@page import="java.util.Map"%>
<%@page import="java.util.HashMap"%>
<%@page import="java.util.List"%>
<%@page import="java.util.ArrayList"%>
<%@ page import="java.text.SimpleDateFormat" %>
<%@ page import="java.io.IOException" %>
<%@ page import="org.slf4j.Logger" %>
<%@ page import="org.slf4j.LoggerFactory" %>
<%@ page import="com.openkm.bean.Document" %>
<%@ page import="com.openkm.util.WebUtils" %>
<%@ page import="com.openkm.api.OKMDocument" %>
<%@ page extends="com.openkm.extension.servlet.BaseServlet" %>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%!
 
private static Logger log = LoggerFactory.getLogger("com.openkm.sample");
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException,
		ServletException {
	String action = WebUtils.getString(request, "action");		
	try {
		list(request, response);
	} catch (Exception e) {
		log.error(e.getMessage(), e);
		sendErrorRedirect(request, response, e);
	}
}
 
// Used by fileupload return and filter
public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException,
ServletException {
	String action = WebUtils.getString(request, "action");
	try {
		list(request, response);
	} catch (Exception e) {
		log.error(e.getMessage(), e);
		sendErrorRedirect(request, response, e);
	}
}
 
private void list(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, Exception {
	SimpleDateFormat df = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
	String docPath = (String) request.getAttribute("docPath");
	String nameFilter = WebUtils.getString(request,"nameFilter");
	// Pending docs
	List<Map<String,String>> pendingDocMaps = new ArrayList<Map<String,String>>();
	for ( Document doc : OKMDocument.getInstance().getChildren(null, "/okm:root")) {
		Map<String,String> docMap = new HashMap<String,String>();
		docMap.put("name",doc.getPath().substring(doc.getPath().lastIndexOf("/")+1));
		docMap.put("uuid",doc.getUuid());
		docMap.put("path",doc.getPath());
		docMap.put("mimeType",doc.getMimeType());
		docMap.put("lastModified", df.format(doc.getLastModified().getTime()));
		pendingDocMaps.add(docMap);
	}
	ServletContext sc = getServletContext();
	sc.setAttribute("docPath",docPath);
	sc.setAttribute("nameFilter",nameFilter);
	sc.setAttribute("pendingDocuments",pendingDocMaps);
	sc.getRequestDispatcher("/sample/sample2/distributor.jsp").forward(request, response);
}%>


ditributor.jsp the main layer Here is used JavaScript to take control of layer height and width.

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  <link rel="stylesheet" type="text/css" href="<%=request.getContextPath() %>/sample/css/style.css" />
  <link rel="stylesheet" type="text/css" href="<%=request.getContextPath() %>/css/jquery.tablescroll.css"/>
  <script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.7.1.min.js"></script>
  <script type="text/javascript" src="<%=request.getContextPath() %>/js/vanadium-min.js" ></script>
  <script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery.tablescroll.js"></script>
</head>
<body>
	<div id="leftPanel" style="float: left;">
		<jsp:include page="/sample/sample2/add_form.jsp"></jsp:include>
		<jsp:include page="/sample/sample2/full_list.jsp"></jsp:include>
	</div>
	<div id="centerPanel" style="float: left; width: 12px;">
		<div id="verticalSeparator" class="verticalSeparator"></div>
	</div>
	<div id="rightPanel" style="float: left;">
        <jsp:include page="/sample/sample2/pending.jsp"></jsp:include>
	</div>
 
	<script type="text/javascript">
		var width =  $(window).width()-12; // Deleting middle panel
		var height = $(window).height();
 
		// Setting height
		$('#verticalSeparator').height(height);
		$('#leftPanel').height(height);
		$('#rightPanel').height(height);
		// Setting width
		$('#leftPanel').width(parseInt(width/2));
		$('#centerPanel').width(12);
		$('#rightPanel').width((width-parseInt((width/2))));
	</script>
</body>
</html>


add_form.jsp

<%@ page import="com.openkm.frontend.client.constants.ui.UIFileUploadConstants" %>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<h2 id="headerTitle_new_register">Upload new file</h2>
<form enctype="multipart/form-data" method="post" action="<%=request.getContextPath() %>/frontend/FileUpload">
	<input type="hidden" name="path" value="/okm:root">
	<input type="hidden" name="action" value="<%=UIFileUploadConstants.ACTION_INSERT%>">
	<input type="hidden" name="message" value="">
	<input type="hidden" name="comment" value="">
	<input type="hidden" name="redirect" value="/sample/sample2/action.jsp">
	<table class="form">
    <tbody>
    	<c:if test="${docPath != null && docPath != ''}">
    	<tr>
    		<td><div class="ok">Document sended</div></td>
    	</tr>
		</c:if>
    	<tr>
    		<td>
    			<div id="file_error" style="display:none; color : red;">File is mandatory.</div>
    			<input type="file" name="file" class=":required;;file_error :only_on_blur">
    		</td>
    	</tr>
    	<tr>
      		<td align="center"><input type="submit" value="Send"></td>
    	</tr>
  	</tbody>
  	</table>
</form>


full_list.jsp Take a look at ends, JavaScript is used to take control of table scroll.

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<script type="text/javascript">
	// Note the parent.parent call because iframe is into other iframe
    function go(uuid) {
        alert('Document UUID:'+uuid);
    	parent.parent.jsOpenPathByUuid(uuid);
    }
</script>
<h2 class="top">Full document list from /okm:root</h2>
<div align="center" style="padding: 0px 20px 0px 5px">
	<div class="tablescroll">
		<table id="docsPendingTable" width="100%" cellspacing="0" style="white-space: nowrap;">
		    <thead>
		      <tr>
		        <td>Id</td><td>Document</td><td>Date</td><td></td>
		      </tr>
		    </thead>
		    <tbody>
		    	<c:set var="first" value="true"></c:set>
		    	<c:forEach var="document" items="${pendingDocuments}" varStatus="row">
		    		<c:choose>
			    	 	<c:when test="${first==true}">
			    	 		<tr class="first">
			    	 	</c:when>
			    	 	<c:otherwise>
			    	 		<tr>
			    	 	</c:otherwise>
			    	</c:choose>
		    			<td valign="center"><img src="<%=request.getContextPath() %>/mime/${document.mimeType}"/></td>
		    			<td>${document.name}</td>
		    			<td>${document.lastModified}</td>
		    			<td align="center"><a href="javascript:go('${document.uuid}')"><img src="<%=request.getContextPath() %>/sample/img/action/goto_document.gif" alt="Show document" title="Show document"/></a></td>
		    		</tr>
		    		<c:set var="first" value="false"></c:set>
		    	</c:forEach>
		    </tbody>
		</table>
	</div>
</div>
 
<script type="text/javascript">
//Calculating table height removing from total other elements height
var pendingTableHeight = $(window).height() - (parseInt($('#docsPendingTable').offset().top) + 35);
/*<![CDATA[*/
jQuery(document).ready(function($)
{
	$('#docsPendingTable').tableScroll({height:pendingTableHeight});
});
/*]]>*/
</script>


User guide 532.png

Installation


Nota clasica.png The screenshots has been done in combination with ExtraTab feature, also can be used TabWorkspaceExtension


Nota clasica.png Remember when you change OpenKM.war file the contents of $TOMCAT_HOME/webapps/OpenKM is changed and you will lost any change you make into.