root/galaxy-central/display_applications/ucsc/bigbed.xml @ 2

<display id="ucsc_bigbed" version="1.0.0" name="display at UCSC">
    <!-- Load links from file: one line to one link -->
    <dynamic_links from_file="tool-data/shared/ucsc/ucsc_build_sites.txt" skip_startswith="#" id="0" name="0">
        <!-- Define parameters by column from file, allow splitting on builds -->
        <dynamic_param name="site_id" value="0"/>
        <dynamic_param name="ucsc_link" value="1"/>
        <dynamic_param name="builds" value="2" split="True" separator="," />
        <!-- Filter out some of the links based upon matching site_id to a Galaxy application configuration parameter and by dataset dbkey -->
        <filter>${site_id in $APP.config.ucsc_display_sites}</filter>
        <filter>${dataset.dbkey in $builds}</filter>
        <!-- We define url and params as normal, but values defined in dynamic_param are available by specified name -->
        <url>${ucsc_link}db=${qp($bigbed_file.dbkey)}&amp;hgt.customText=${qp($track.url)}</url>
        <param type="data" name="bigbed_file" url="galaxy_${DATASET_HASH}.bigbed" strip_https="True" />
        <param type="template" name="track" viewable="True" strip_https="True">track type=bigBed name="${bigbed_file.name}" bigDataUrl=${bigbed_file.url} db=${bigbed_file.dbkey}</param>
    </dynamic_links>
</display>