Joget DX 8 Stable Released
The stable release for Joget DX 8 is now available, with a focus on UX and Governance.
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In this tutorial, we will following the guideline of developing a plugin to develop our Gantt Chart Userview Menu plugin. Please also refer to the very first tutorial วิธีการพัฒนา Bean Shell Hash Variable for more details steps.
I want to display collected form data in a gantt chart view. I can choose to use Jasper Reports Userview Menu to achieve it but It does not look nice and lack of interactive control. Then, I found this Jquery Gantt Chart library developed by Tait Brown under MIT license which look nicer and work better than viewing a gantt chart using Jasper Report. I want to use it to display my collected form data.
We can develop a Userview Menu Plugin to use the Jquery Gantt Chart library to display the collected form data.
To develop a Gantt Chart Userview Menu plugin, we can consider to provide the following as input.
By referring to the library demo, we can quickly come out a static HTML page like the picture below. As this is a Joget plugin tutorial, we will not go into the detail on coding the static HTML page. You can refer to static.zip. We will expect our userview page can display our collected data as the static HTML page.
If you are not familiar with FreeMaker syntax, you should have a look on their document before proceed.
We need to always have our Joget Workflow Source Code ready and builded by following this guideline.
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Open the maven project with your favourite IDE. I will be using NetBeans.
Create a "GanttChartMenu" class under "org.joget.tutorial" package. Then, extend the class with org.joget.apps.userview.model.UserviewMenu abstract class. Please refer to Userview Menu Plugin.
As usual, we have to implement all the abstract methods. We will using AppPluginUtil.getMessage method to support i18n and using constant variable MESSAGE_PATH for message resource bundle directory.
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Now, for testing purpose, we can skip to c. Manage the dependency libraries of your plugin, d. Make your plugin internationalization (i18n) ready, e. Register your plugin to Felix Framework and f. Build it and testing then continue the below after testing it. You will get something similar to below in your userview.
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<link href="${request.contextPath}/plugin/org.joget.tutorial.GanttChartMenu/lib/jquery.gantt/css/style.css" rel="stylesheet" type="text/css" /> <script src="${request.contextPath}/plugin/org.joget.tutorial.GanttChartMenu/lib/jquery.gantt/js/jquery.fn.gantt.min.js"></script> <div class="gantt_chart_menu_body"> <#if element.properties.title?? ><h3>${element.properties.title!}</h3></#if> ${element.properties.customHeader!} <div class="gantt"></div> <script> $(function() { "use strict"; $(".gantt").gantt({ source: ${data!}, months: [@@userview.ganttChart.months.label@@], dow: [@@userview.ganttChart.dow.label@@], itemsPerPage: ${element.properties.itemsPerPage!}, navigate: "${element.properties.navigate!}", scale: "${element.properties.scale!}", maxScale: "${element.properties.maxScale!}", minScale: "${element.properties.minScale!}", waitText: "@@userview.ganttChart.waitText@@", onItemClick: function (data) { ${element.properties.onItemClick!} }, onAddClick: function(datetime, rowId) { ${element.properties.onAddClick!} }, onRender: function() { ${element.properties.onRender!} }, useCookie: <#if element.properties.useCookie! == 'true'>true<#else>false</#if>, scrollToToday: <#if element.properties.scrollToToday! == 'true'>true<#else>false</#if> }); }); </script> ${element.properties.customFooter!} </div> |
Our plugin is using some libraries, we have to add all of them to our POM file.
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<!-- Change plugin specific dependencies here --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> </dependency> <dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>20080701</version> </dependency> <dependency> <groupId>displaytag</groupId> <artifactId>displaytag</artifactId> <version>1.2</version> <exclusions> <exclusion> <artifactId>slf4j-api</artifactId> <groupId>org.slf4j</groupId> </exclusion> <exclusion> <artifactId>jcl104-over-slf4j</artifactId> <groupId>org.slf4j</groupId> </exclusion> <exclusion> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> </exclusion> </exclusions> </dependency> <!-- End change plugin specific dependencies here --> |
We are using i18n message key in getLabel and getDescription method. We also used i18n message key in our properties options definition as well. So, we will need to create a message resource bundle properties file for our plugin.
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org.joget.tutorial.GanttChartMenu.pluginLabel=Gantt Chart Menu org.joget.tutorial.GanttChartMenu.pluginDesc=Display data in a Gantt Chart view userview.ganttchart.config=Configure Gantt Chart Menu userview.ganttchart.customId=Custom ID userview.ganttchart.invalidId=Only alpha-numeric and underscore characters allowed userview.ganttchart.label=Label userview.ganttchart.title=Page Title userview.ganttchart.binder=Data Binder userview.ganttchart.mapping=Column to Data Mappings userview.ganttchart.mapping.category=Category (column ID) userview.ganttchart.mapping.task=Task (column ID) userview.ganttchart.mapping.activity=Activity (column ID) userview.ganttchart.mapping.fromDate=Activity From Date (column ID) userview.ganttchart.mapping.toDate=Activity To Date (column ID) userview.ganttchart.mapping.dateFormat=Date format for Activity From/To Date userview.ganttchart.mapping.taskId=Task Id (column ID) userview.ganttchart.mapping.cssClass=Status (column ID, use as CSS class for styling) userview.ganttchart.advanced=Advanced userview.ganttchart.itemsPerPage=Item pre page userview.ganttchart.navigate=Navigator userview.ganttchart.navigate.buttons=Buttons userview.ganttchart.navigate.scroll=Scroll userview.ganttchart.scale=Default Scale userview.ganttchart.scale.hours=Hours userview.ganttchart.scale.days=Days userview.ganttchart.scale.weeks=Weeks userview.ganttchart.scale.months=Months userview.ganttchart.maxScale=Maximum Scale userview.ganttchart.minScale=Minimum Scale userview.ganttchart.useCookie=Use cookie for storing chart states userview.ganttchart.scrollToToday=Auto scroll to today after rendered userview.ganttchart.onItemClick=On Item Clicked Event (Javascript) userview.ganttchart.onAddClick=On Empty Space Clicked Event (Javascript) userview.ganttchart.onRender=On Rendered Event (Javascript) userview.ganttchart.customHeader=Custom Header (HTML) userview.ganttchart.customFooter=Custom Footer (HTML) userview.ganttChart.months.label="January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" userview.ganttChart.dow.label="S", "M", "T", "W", "T", "F", "S" userview.ganttChart.waitText=Loading... |
We will have to register our plugin class in Activator class (Auto generated in the same class package) to tell Felix Framework that this is a plugin.
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public void start(BundleContext context) { registrationList = new ArrayList<ServiceRegistration>(); //Register plugin here registrationList.add(context.registerService(GanttChartMenu.class.getName(), new GanttChartMenu(), null)); } |
Let build our plugin. Once the building process is done, we will found a "gantt_chart_menu-5.0.0.jar" file is created under "gantt_chart_menu/target" directory.
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Populate some data to the form for testing.
The end result.
You can download the source code from gantt_chart_menu.zip.
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