3 files changed, 75 insertions, 50 deletions
diff --git a/uploader/static/js/datatables.js b/uploader/static/js/datatables.js
index 8d54a84..9782a60 100644
--- a/uploader/static/js/datatables.js
+++ b/uploader/static/js/datatables.js
@@ -54,4 +54,62 @@ var dtAddRowClickHandler = (tableId) => {
 var dtAddCommonHandlers = (tableId) => {
     dtAddRowSelectionHandler(tableId);
     dtAddRowClickHandler(tableId);
-}
+};
+
+var addTableLength = (menuList, lengthToAdd, dataLength) => {
+    if(dataLength >= lengthToAdd) {
+        newList = structuredClone(menuList);//menuList.slice(0, menuList.length); // shallow copy
+        newList.push(lengthToAdd);
+        return newList;
+    }
+    return menuList;
+};
+
+var defaultLengthMenu = (data) => {
+    menuList = []
+    var lengths = [10, 25, 50, 100, 1000, data.length];
+    lengths.forEach((len) => {
+        menuList = addTableLength(menuList, len, data.length);
+    });
+    return menuList;
+};
+
+var buildDataTable = (tableId, data = [], columns = [], userSettings = {}) => {
+    var defaultSettings = {
+        responsive: true,
+        /* == Scroller settings == */
+        scroller: true,
+        paging: true, // MUST be true for scroller to work
+        sDom: "iti",
+        scrollY: "100vh",
+        scrollCollapse: true,
+        /* == END: Scroller settings == */
+        lengthMenu: defaultLengthMenu(data),
+        language: {
+            processing: "Processing… Please wait.",
+            loadingRecords: "Loading population — Please wait.",
+            lengthMenu: "Show _MENU_ populations",
+            info: "Showing _START_ to _END_ of _TOTAL_ populations"
+        },
+        data: data,
+        columns: columns,
+        drawCallback: (settings) => {
+            $(this[0]).find("tbody tr").each((idx, row) => {
+                var arow = $(row);
+                var checkboxOrRadio = arow.find(".chk-row-select");
+                if (checkboxOrRadio) {
+                    if (arow.hasClass("selected")) {
+                        checkboxOrRadio.prop("checked", true);
+                    } else {
+                        checkboxOrRadio.prop("checked", false);
+                    }
+                }
+            });
+        }
+    }
+    var theDataTable = $(tableId).DataTable({
+        ...defaultSettings,
+        ...userSettings
+    });
+    return theDataTable;
+};
diff --git a/uploader/static/js/populations.js b/uploader/static/js/populations.js
index 5c1f848..73e298a 100644
--- a/uploader/static/js/populations.js
+++ b/uploader/static/js/populations.js
@@ -1,19 +1,10 @@
-var populationDataTable = (populationdata) => {
-    var lengthMenu = [10, 25, 50, 100, 1000];
-    if(populationdata.length > 1000) {
-        lengthMenu.push(populationdata.length)
-    }
-    $("#tbl-select-population").DataTable({
-        responsive: true,
-        lengthMenu: lengthMenu,
-        language: {
-            processing: "Processing… Please wait.",
-            loadingRecords: "Loading population — Please wait.",
-            lengthMenu: "Show _MENU_ populations",
-            info: "Showing _START_ to _END_ of _TOTAL_ populations"
-        },
-        data: populationdata,
-        columns: [
+$(() => {
+    dtAddCommonHandlers("#tbl-select-population");
+    var populationsDataTable = buildDataTable(
+        "#tbl-select-population",
+        JSON.parse(
+            $("#tbl-select-population").attr("data-populations-list")),
+        [
             {
                 data: (apopulation) => {
                     return `<input type="radio" name="population_id"`
@@ -27,13 +18,5 @@ var populationDataTable = (populationdata) => {
                     return `${apopulation.FullName} (${apopulation.InbredSetName})`;
                 }
             }
-        ]
-    });
-};
-
-
-$(() => {
-    dtAddCommonHandlers("#tbl-select-population");
-    populationDataTable(JSON.parse(
-        $("#tbl-select-population").attr("data-populations-list")));
+        ]);
 });
diff --git a/uploader/static/js/species.js b/uploader/static/js/species.js
index 1f2aa3b..c1374c6 100644
--- a/uploader/static/js/species.js
+++ b/uploader/static/js/species.js
@@ -1,19 +1,10 @@
-var speciesDataTable = (speciesdata) => {
-    var lengthMenu = [10, 25, 50, 100, 1000];
-    if(speciesdata.length > 1000) {
-        lengthMenu.push(speciesdata.length)
-    }
-    $("#tbl-select-species").DataTable({
-        responsive: true,
-        lengthMenu: lengthMenu,
-        language: {
-            processing: "Processing… Please wait.",
-            loadingRecords: "Loading species — Please wait.",
-            lengthMenu: "Show _MENU_ species",
-            info: "Showing _START_ to _END_ of _TOTAL_ species"
-        },
-        data: speciesdata,
-        columns: [
+$(() => {
+    dtAddCommonHandlers("#tbl-select-species");
+    var speciesDataTable = buildDataTable(
+        "#tbl-select-species",
+        JSON.parse(
+            $("#tbl-select-species").attr("data-species-list")),
+        [
             {
                 data: (aspecies) => {
                     return `<input type="radio" name="species_id"`
@@ -26,12 +17,5 @@ var speciesDataTable = (speciesdata) => {
                     return `${aspecies.FullName} (${aspecies.SpeciesName})`;
                 }
             }
-        ]
-    });
-};
-
-$(() => {
-    dtAddCommonHandlers("#tbl-select-species");
-    speciesDataTable(JSON.parse(
-        $("#tbl-select-species").attr("data-species-list")));
+        ]);
 });