1 files changed, 109 insertions, 0 deletions
diff --git a/devtools/client/accessibility/reducers/audit.js b/devtools/client/accessibility/reducers/audit.js
new file mode 100644
index 0000000000..e65251ba64
--- /dev/null
+++ b/devtools/client/accessibility/reducers/audit.js
@@ -0,0 +1,109 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const {
+  accessibility: { AUDIT_TYPE },
+} = require("resource://devtools/shared/constants.js");
+const {
+  AUDIT,
+  AUDITING,
+  AUDIT_PROGRESS,
+  FILTER_TOGGLE,
+  FILTERS,
+  RESET,
+  SELECT,
+} = require("resource://devtools/client/accessibility/constants.js");
+
+/**
+ * Initial state definition
+ */
+function getInitialState() {
+  return {
+    filters: {
+      [FILTERS.ALL]: false,
+      [FILTERS.CONTRAST]: false,
+      [FILTERS.KEYBOARD]: false,
+      [FILTERS.TEXT_LABEL]: false,
+    },
+    auditing: [],
+    progress: null,
+  };
+}
+
+/**
+ * State with all filters active.
+ */
+function allActiveFilters() {
+  return {
+    [FILTERS.ALL]: true,
+    [FILTERS.CONTRAST]: true,
+    [FILTERS.KEYBOARD]: true,
+    [FILTERS.TEXT_LABEL]: true,
+  };
+}
+
+function audit(state = getInitialState(), action) {
+  switch (action.type) {
+    case FILTER_TOGGLE:
+      const { filter } = action;
+      let { filters } = state;
+      const isToggledToActive = !filters[filter];
+
+      if (filter === FILTERS.NONE) {
+        filters = getInitialState().filters;
+      } else if (filter === FILTERS.ALL) {
+        filters = isToggledToActive
+          ? allActiveFilters()
+          : getInitialState().filters;
+      } else {
+        filters = {
+          ...filters,
+          [filter]: isToggledToActive,
+        };
+
+        const allAuditTypesActive = Object.values(AUDIT_TYPE)
+          .filter(filterKey => filters.hasOwnProperty(filterKey))
+          .every(filterKey => filters[filterKey]);
+        if (isToggledToActive && !filters[FILTERS.ALL] && allAuditTypesActive) {
+          filters[FILTERS.ALL] = true;
+        } else if (!isToggledToActive && filters[FILTERS.ALL]) {
+          filters[FILTERS.ALL] = false;
+        }
+      }
+
+      return {
+        ...state,
+        filters,
+      };
+    case AUDITING:
+      const { auditing } = action;
+
+      return {
+        ...state,
+        auditing,
+      };
+    case AUDIT:
+      return {
+        ...state,
+        auditing: getInitialState().auditing,
+        progress: null,
+      };
+    case AUDIT_PROGRESS:
+      const { progress } = action;
+
+      return {
+        ...state,
+        progress,
+      };
+    case SELECT:
+    case RESET:
+      return getInitialState();
+    default:
+      return state;
+  }
+}
+
+exports.audit = audit;