grantDeleteProcess.js

import("system.neon");
import("Context_lib");
import("ActivityTask_lib");
import("Document_lib");
import("system.vars");
import("system.result");

if (vars.get("$sys.viewmode") == neon.FRAME_VIEWMODE_DATASET)
    result.string(!DocumentUtil.hasDocuments("CONTACT", null, vars.get("$field.CONTACTID"))
        && !TaskUtils.hasTasks(vars.get("$field.CONTACTID"), ContextUtils.getCurrentContextId())
        && !ActivityUtils.hasActivities(vars.get("$field.CONTACTID"), ContextUtils.getCurrentContextId()));