Integrate ZK with dhtmlxGantt

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Author
Vincent Jian, Engineer, Potix Corporation

Date
October 3, 2014

Version
ZK 7.0.3, dhtmlxGantt v.3.0.0 Standard

Introduction

dhtmlxGantt is an open source JavaScript Gantt chart that helps you visualize a project schedule in a nice-looking chart. It can show the dependencies between tasks as lines and allows you to set up different relationships between tasks (finish-to-start, start-to-start, end-to-end). This smalltalk will introduce how to integrate dhtmlxGantt into ZK web application.

Prerequisites

Since dhtmlxGantt is a javascript library, here I will use the technical described in the following articles to integrated with ZK:

• Integrate 3rd Party Javascript Libraries In ZK
• Integrate 3rd Party Javascript Libraries In ZK Using Clientside Controller

It is suggested to read the above two articles to understand the life cycle of ZK client widget.

Step to integrate dhtmlxGantt

Create ZK Project and Prepare Necessary Libraries

1. Create a ZK project by maven, refer to our installation guide.

2. Download dhtmlxGantt library from its official site, here I download the version 3.0 standard edition (GNU GPL v2 license).

• Extract the zip file and put dhtmlxgantt.js and dhtmlxgantt.css files under the project's "webapp/gantt" folder.

Load the library source and setup basic component

To load the dhtmlxgantt library, we can use script xml processing instruction like <?link?> and <?script?> on the zul page. From dhtmlxgantt online document, a simple div element is enough to initialize Gantt chart. Therefore, we add a div component on the zul page.

<?link rel="stylesheet" type="text/css" href="/gantt/dhtmlxgantt.css"?>
<?script type="text/javascript" src="/gantt/dhtmlxgantt.js"?>
<zk>
    <window title="Dhtml Gantt Integration" border="normal" vflex="1">
        <div id="gantt" />
    </window>
</zk>

• Line 1,2: Load dhtmlxgantt library
• Line 5: Add div component to generate Gantt Chart.

Comments

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