アセットエディターの拡張 extending-asset-editor

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling="https://sling.apache.org/jcr/sling/1.0" xmlns:cq="https://www.day.com/jcr/cq/1.0" xmlns:jcr="https://www.jcp.org/jcr/1.0"
    jcr:primaryType="cq:Component"
    jcr:title="Image Dimension"
    sling:resourceSuperType="foundation/components/parbase"
    allowedParents="[*/parsys]"
    componentGroup="Asset Editor"/>

<%--

  Sample metadata field component

--%><%@ page import="com.day.cq.dam.api.Asset,
                 java.security.AccessControlException" %><%
%><%@include file="/libs/foundation/global.jsp"%><%

    String value = "";
    String name = "dam:sampleMetadata";
    boolean readOnly = false;

    // If the form page is requested for an asset loadResource is the asset.
    Resource loadResource = (Resource) request.getAttribute("cq.form.loadresource");

    if (loadResource != null) {

        // Determine if the loaded asset is read only.
        Session session = slingRequest.getResourceResolver().adaptTo(Session.class);
        try {
            session.checkPermission(loadResource.getPath(), "set_property");
            readOnly = false;
        }
        catch (AccessControlException ace) {
            // checkPermission throws exception if asset is read only
            readOnly = true;
        }
        catch (RepositoryException re) {}

        // Get the value of the metadata.
        Asset asset = loadResource.adaptTo(Asset.class);
        try {
            value = asset.getMetadata(name).toString();
        }
        catch (NullPointerException npe) {
            // no metadata dc:description available
        }
    }
%>
<div class="form_row">
    <div class="form_leftcol">
        <div class="form_leftcollabel">Sample Metadata</div>
    </div>
    <div class="form_rightcol">
        <%
        if (readOnly) {
            %><c:out value="<%= value %>"/><%
        }
        else {
            %><input class="text" type="text" name="./jcr:content/metadata/<%= name %>" value="<c:out value="<%= value %>" />"><%
        }%>
    </div>
</div>