add table filter to async table js utility

static/js/utils/asyncTable.js

@@ -23,11 +23,10 @@
   var INPUT_DEBOUNCE = 600;
 
   var HEADER_HEIGHT = 80;
-  var RESET_OPTIONS = [ 'scrollTo' ];
-  var TABLE_FILTER_FORM_CLASS = 'table-filter-form';
+  var TABLE_FILTER_FORM_SELECTOR = '.table-filter-form';
+  var TABLE_FILTER_FORM_ID_SELECTOR = '[name="form-identifier"]';
 
   var ASYNC_TABLE_LOADING_CLASS = 'async-table--loading';
-  var ASYNC_TABLE_FILTER_LOADING_CLASS = 'async-table-filter--loading';
 
   var asyncTableUtil = function(element) {
     var asyncTableHeader;
@@ -38,6 +37,13 @@
     var pagesizeForm;
     var scrollTable;
 
+    var tableFilterInputs = {
+      search: [],
+      input: [],
+      change: [],
+      select: [],
+    }
+
     function init() {
       if (!element) {
         throw new Error('Async Table utility cannot be setup without an element!');
@@ -124,12 +130,126 @@
     }
 
     function setupTableFilter() {
-      // // filter
-      // var filterForm = element.querySelector('.' + TABLE_FILTER_FORM_CLASS);
-      // if (filterForm) {
-      //   options.updateTableFrom = updateTableFrom;
-      //   utilInstances.push(window.utils.setup('asyncTableFilter', filterForm, options));
-      // }
+      var filterForm = element.querySelector(TABLE_FILTER_FORM_SELECTOR);
+
+      if (filterForm) {
+        gatherTableFilterInputs();
+        addTableFilterEventListeners();
+      }
+    }
+
+    function gatherTableFilterInputs() {
+      Array.from(element.querySelectorAll('input[type="search"]')).forEach(function(input) {
+        tableFilterInputs.search.push(input);
+      });
+
+      Array.from(element.querySelectorAll('input[type="text"]')).forEach(function(input) {
+        tableFilterInputs.input.push(input);
+      });
+
+      Array.from(element.querySelectorAll('input:not([type="text"]):not([type="search"])')).forEach(function(input) {
+        tableFilterInputs.change.push(input);
+      });
+
+      Array.from(element.querySelectorAll('select')).forEach(function(input) {
+        tableFilterInputs.select.push(input);
+      });
+    }
+
+    function addTableFilterEventListeners() {
+      tableFilterInputs.search.forEach(function(input) {
+        var debouncedInput = debounce(function() {
+          if (input.value.length === 0 || input.value.length > 2) {
+            updateFromTableFilter();
+          }
+        }, INPUT_DEBOUNCE);
+        input.addEventListener('input', debouncedInput);
+      });
+
+      tableFilterInputs.input.forEach(function(input) {
+        var debouncedInput = debounce(function() {
+          if (input.value.length === 0 || input.value.length > 2) {
+            updateFromTableFilter();
+          }
+        }, INPUT_DEBOUNCE);
+        input.addEventListener('input', debouncedInput);
+      });
+
+      tableFilterInputs.change.forEach(function(input) {
+        input.addEventListener('change', function() {
+          updateFromTableFilter();
+        });
+      });
+
+      tableFilterInputs.select.forEach(function(input) {
+        input.addEventListener('change', function() {
+          updateFromTableFilter();
+        });
+      });
+
+      element.addEventListener('submit', function(event) {
+        event.preventDefault();
+        updateFromTableFilter();
+      });
+    }
+
+    function updateFromTableFilter() {
+      var url = serializeTableFilterToURL();
+      var callback = null;
+
+      var focusedSearch = tableFilterInputs.search.reduce(function(acc, input) {
+        return acc || (input.matches(':focus') && input);
+      }, null);
+      // focus search input
+      if (focusedSearch) {
+        var selectionStart = focusedSearch.selectionStart;
+        callback = function(wrapper) {
+          var search = wrapper.querySelector('input[type="search"]');
+          if (search) {
+            search.focus();
+            search.selectionStart = selectionStart;
+          }
+        };
+      }
+      updateTableFrom(url, callback);
+    }
+
+    function serializeTableFilterToURL() {
+      var url = new URL(getLocalStorageParameter('currentTableUrl') || window.location.href);
+
+      var formIdElement = element.querySelector(TABLE_FILTER_FORM_ID_SELECTOR);
+      if (!formIdElement) {
+        // cannot serialize the filter form without an identifier
+        return;
+      }
+
+      url.searchParams.set('form-identifier', formIdElement.value);
+      url.searchParams.set('_hasdata', 'true');
+      url.searchParams.set(asyncTableId + '-page', '0');
+
+      tableFilterInputs.search.forEach(function(input) {
+        url.searchParams.set(input.name, input.value);
+      });
+
+      tableFilterInputs.input.forEach(function(input) {
+        url.searchParams.set(input.name, input.value);
+      });
+
+      tableFilterInputs.change.forEach(function(input) {
+        if (input.checked) {
+          url.searchParams.set(input.name, input.value);
+        }
+      });
+
+      tableFilterInputs.select.forEach(function(select) {
+        var options = Array.from(select.querySelectorAll('option'));
+        var selected = options.find(function(option) { return option.selected });
+        if (selected) {
+          url.searchParams.set(select.name, selected.value);
+        }
+      });
+
+      return url;
     }
 
     function reset() {
@@ -192,7 +312,7 @@
     }
 
     // fetches new sorted element from url with params and replaces contents of current element
-    function updateTableFrom(url) {
+    function updateTableFrom(url, callback) {
       if (!HttpClient) {
         throw new Error('HttpClient not found!');
       }
@@ -218,6 +338,10 @@
         // update table with new
         updateWrapperContents(data);
 
+        if (callback && typeof callback === 'function') {
+          callback(element);
+        }
+
         element.classList.remove(ASYNC_TABLE_LOADING_CLASS);
       }).catch(function(err) {
         console.error(err);