/// <summary> Constructor for a new instance of the Text_Search_ItemViewer class, which allows the full text of an
        /// individual resource to be searched and individual matching pages are displayed with page thumbnails </summary>
        /// <param name="BriefItem"> Digital resource object </param>
        /// <param name="CurrentUser"> Current user, who may or may not be logged on </param>
        /// <param name="CurrentRequest"> Information about the current request </param>
        /// <param name="Tracer"> Trace object keeps a list of each method executed and important milestones in rendering </param>
        public Text_Search_ItemViewer(BriefItemInfo BriefItem, User_Object CurrentUser, Navigation_Object CurrentRequest, Custom_Tracer Tracer)
        {
            Tracer.Add_Trace("Text_Search_ItemViewer.Constructor");

            // Save the arguments for use later
            this.BriefItem      = BriefItem;
            this.CurrentUser    = CurrentUser;
            this.CurrentRequest = CurrentRequest;

            // Set the behavior properties to the empy behaviors ( in the base class )
            Behaviors = EmptyBehaviors;

            if (!String.IsNullOrWhiteSpace(CurrentRequest.Text_Search))
            {
                List <string> terms      = new List <string>();
                List <string> web_fields = new List <string>();

                // Split the terms correctly
                SobekCM_Assistant.Split_Clean_Search_Terms_Fields(CurrentRequest.Text_Search, "ZZ", Search_Type_Enum.Basic, terms, web_fields, null, Search_Precision_Type_Enum.Contains, '|');

                Tracer.Add_Trace("Text_Search_ItemViewer.Constructor", "Performing Solr/Lucene search");

                int page = CurrentRequest.SubPage.HasValue ? Math.Max(CurrentRequest.SubPage.Value, ((ushort)1)) : 1;
                results = Solr_Page_Results.Search(BriefItem.BibID, BriefItem.VID, terms, 20, page, false);

                Tracer.Add_Trace("Text_Search_ItemViewer.Constructor", "Completed Solr/Lucene search in " + results.QueryTime + "ms");
            }
        }
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        /// <summary> This provides an opportunity for the viewer to perform any pre-display work
        /// which is necessary before entering any of the rendering portions </summary>
        /// <param name="Tracer"> Trace object keeps a list of each method executed and important milestones in rendering </param>
        /// <remarks> This method his class pulls any full-text search results for this single item from the Solr/Lucene engine </remarks>
        public override void Perform_PreDisplay_Work(Custom_Tracer Tracer)
        {
            if (CurrentMode.Text_Search.Length > 0)
            {
                List <string> terms      = new List <string>();
                List <string> web_fields = new List <string>();

                // Split the terms correctly
                SobekCM_Assistant.Split_Clean_Search_Terms_Fields(CurrentMode.Text_Search, "ZZ", Search_Type_Enum.Basic, terms, web_fields, null, Search_Precision_Type_Enum.Contains, '|');

                Tracer.Add_Trace("Text_Search_Item_Viewer.Perform_PreDisplay_Work", "Performing Solr/Lucene search");

                results = Solr_Page_Results.Search(CurrentItem.BibID, CurrentItem.VID, terms, 20, CurrentMode.SubPage, false);

                Tracer.Add_Trace("Text_Search_Item_Viewer.Perform_PreDisplay_Work", "Completed Solr/Lucene search in " + results.QueryTime + "ms");
            }
        }