Freemarker templates with Nifty-gui using Nifty-flow add-on

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Lately Cabo-Trafalgar projects are on fire, I want to make the damn release and take some months of resting, but in the meanwhile I bring my last present to the JME3 community.

Something I didn’t like from the beginning was replacing XML with Java Builders when I needed a dynamic number of elements in the screen. It was annoying for me to learn how to do exactly the same in a different way, including aspect/style of elements. Also, you need to build inside-out all elements you need.

As part of my web-oriented background, and given I had already nifty-flow in place, I dared to fix the problem myself by using Freemarker templates. Here you have an example, it’s really nifty:

<?xml version="1.0" encoding="UTF-8"?>
<nifty xmlns="http://nifty-gui.sourceforge.net/nifty.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
       xsi:schemaLocation="http://nifty-gui.sourceforge.net/nifty.xsd http://nifty-gui.sourceforge.net/nifty.xsd">
    <useStyles filename="nifty-default-styles.xml" />
    <useControls filename="nifty-default-controls.xml" />

    <screen id="${screenUniqueId}" controller="com.navid.trafalgar.mod.common.SelectKeyboardControlsScreenController">
        <layer id="background" childLayout="center">
        </layer>
        <layer id="foreground" childLayout="vertical" style="nifty-panel-no-shadow">
            <panel id="panel_top" height="15%" width="75%" align="center" childLayout="center">  
                <text text="Select the keys..." font="Interface/Fonts/Default.fnt" width="100%" height="100%" />
            </panel>
            <panel id="panel_mid" height="70%" width="75%" align="center" childLayout="horizontal" style="nifty-panel-red">

                <panel id="panel_mid_left" width="100%" align="center" childLayout="horizontal">
                    <#list partitionedKeyboardCommands as partition>
                        <panel id="partition_${partition?counter}" width="50%" align="center" childLayout="vertical">
                            <#list partition as keyboardCommands>
                                <panel id="keyboardCommands_${keyboardCommands}" align="center" childLayout="horizontal">
                                    <control id="${keyboardCommands}" name="listBox" displayItems="4" forceSelection="true" horizontal="off" width="30%" align="left" />
                                    <text text="${keyboardCommands}" font="Interface/Fonts/Default.fnt" align="right" />
                                </panel>
                                <text text="" font="Interface/Fonts/Default.fnt" align="right" />
                            </#list>
                        </panel>
                    </#list>

                </panel>

            </panel>
            <panel id="panel_bottom" height="15%" width="75%" align="center" childLayout="horizontal">  
                <panel id="panel_bottom_right" height="50%" width="25%" valign="center" childLayout="center">  
                    <control name="button" label="Back" id="QuitButton" align="center" valign="center" 
                             visibleToMouse="true" > 
                        <interact onClick="back()"/>
                    </control>
                </panel>
                <panel id="panel_bottom_right3" height="50%" width="25%" valign="center" childLayout="center">  
                    <control name="button" label="Select ship" id="PlayButton" align="center" valign="center" 
                             visibleToMouse="true" > 
                        <interact onClick="next()"/>
                    </control>
                </panel>
            </panel>
        </layer>
    </screen>
</nifty>

Full example and explanations here: Freemarker in nifty-gui

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