New: Add _enableFilters property (fixes #115)

README.md

@@ -26,7 +26,10 @@ With the [Adapt CLI](https://github.com/adaptlearning/adapt-cli) installed, run
 <div float align=right><a href="#top">Back to Top</a></div>
 
 ## Settings
-The attributes listed below are used in *course.json* to configure **Resources**, and are properly formatted as JSON in [*example.json*](https://github.com/adaptlearning/adapt-contrib-resources/blob/master/example.json). Visit the [**Resources** wiki](https://github.com/adaptlearning/adapt-contrib-resources/wiki) for more information about how they appear in the [authoring tool](https://github.com/adaptlearning/adapt_authoring/wiki).
+
+The attributes listed below are used in *course.json* to configure **Resources**, and are properly formatted as JSON in [*example.json*](https://github.com/adaptlearning/adapt-contrib-resources/blob/master/example.json). Some attributes can also be overridden for each content object in *contentObjects.json* (see [*example.json*](https://github.com/adaptlearning/adapt-contrib-resources/blob/master/example.json)).
+
+Visit the [**Resources** wiki](https://github.com/adaptlearning/adapt-contrib-resources/wiki) for more information about how they appear in the [authoring tool](https://github.com/adaptlearning/adapt_authoring/wiki).
 
 **\_resources** (object): The Resources object that contains values for **title**, **description**, **\_filterButtons**, **\_filterAria**, and **\_resourcesItems**.
 
@@ -44,6 +47,8 @@ The attributes listed below are used in *course.json* to configure **Resources**
 
 >**instruction** (string): The instruction text for the resources which displays at the top of the resources drawer.
 
+>**\_enableFilters** (boolean): Turns the filter buttons on and off. Acceptable values are `true` and `false`. Defaults to `true`. Note that the filter buttons will be automatically disabled if all `_resourcesItems` items have the same `_type` value.
+
 >**\_filterButtons** (object):  This attribute group maintains the labels for the four buttons that filter resources by type. It contains values for **all**, **document**, **media**, and **link**.
 
 >>**all** (string): This text appears on the button that returns all **\_resourcesItems**.
@@ -91,4 +96,4 @@ No known limitations.
 **Author / maintainer:** Adapt Core Team with [contributors](https://github.com/adaptlearning/adapt-contrib-resources/graphs/contributors)<br>
 **Accessibility support:** WAI AA<br>
 **RTL support:** Yes<br>
-**Cross-platform coverage:** Chrome, Chrome for Android, Firefox (ESR + latest version), Edge, IE11, Safari 12+13 for macOS/iOS/iPadOS, Opera<br>
+**Cross-platform coverage:** Chrome, Chrome for Android, Firefox (ESR + latest version), Edge, Safari for macOS/iOS/iPadOS, Opera<br>

example.json

@@ -7,6 +7,7 @@
         "displayTitle": "",
         "body": "",
         "instruction": "",
+        "_enableFilters": true,
         "_filterButtons": {
             "all": "All",
             "document": "PDF",

js/ResourcesView.js

@@ -21,7 +21,10 @@ export default class ResourcesView extends Backbone.View {
       ...this,
       model: this.model.toJSON(),
       resources: this.model.get('_resources'),
-      resourceTypes: this.model.get('_resourceTypes')
+      resourceTypes: this.model.get('_resourceTypes'),
+      _showFilters: this.model.get('_showFilters'),
+      _filterColumnCount: this.model.get('_filterColumnCount'),
+      _canDownload: this.model.get('_canDownload')
     };
     ReactDOM.render(<templates.resources {...data} />, this.el);
 

js/adapt-contrib-resources.js

@@ -1,5 +1,6 @@
 import Adapt from 'core/js/adapt';
 import drawer from 'core/js/drawer';
+import device from 'core/js/device';
 import ResourcesView from './ResourcesView';
 
 class Resources extends Backbone.Controller {
@@ -48,15 +49,43 @@ class Resources extends Backbone.Controller {
       model.set('_resources', resources);
 
       this.setupTypes(model, resourcesData);
+      this.setupFilters(model, resources);
+      this.setupCanDownload(model);
 
       drawer.triggerCustomView(new ResourcesView({ model }).$el);
     });
   }
 
   setupTypes(model, resourcesData) {
     const configuredTypes = Object.keys(resourcesData._filterButtons).filter(type => type !== 'all');
-    const allTypes = [ 'all', ...configuredTypes ];
-    model.set('_resourceTypes', allTypes);
+    const typesWithItems = configuredTypes.filter(type => {
+      return resourcesData._resourcesItems.some(_.matcher({ _type: type }));
+    });
+
+    model.set('_resourceTypes', [ 'all', ...typesWithItems ]);
+  }
+
+  setupFilters(model, resources) {
+    const hasMultipleResources = resources.length > 1;
+    const hasMultipleTypes = !resources.every(_.matcher({ _type: resources[0]._type }));
+    const enableFilters = model.get('_enableFilters') ?? true;
+
+    const showFilters = hasMultipleResources && hasMultipleTypes && enableFilters;
+    model.set('_showFilters', showFilters);
+
+    const filterColumnCount = _.uniq(_.pluck(resources, '_type')).length + 1;
+    model.set('_filterColumnCount', filterColumnCount);
+  }
+
+  /**
+    * IE doesn't support the 'download' attribute
+    * https://github.com/adaptlearning/adapt_framework/issues/1559
+    * and iOS just opens links with that attribute in the same window
+    * https://github.com/adaptlearning/adapt_framework/issues/1852
+  */
+  setupCanDownload(model) {
+    const canEnableDownloads = device.browser !== 'internet explorer' && device.OS !== 'ios';
+    model.set('_canDownload', canEnableDownloads);
   }
 
 }

properties.schema

@@ -105,6 +105,15 @@
                   "help": "The instruction text for the resources which displays at the top of the resources drawer.",
                   "translatable": true
                 },
+                "_enableFilters": {
+                  "type": "boolean",
+                  "required":true,
+                  "default": true,
+                  "title": "Enable filter buttons",
+                  "inputType": "Checkbox",
+                  "validators": [],
+                  "help": "Turns the filter buttons on and off. Note that the filter buttons will be automatically disabled if all resource items have the same Type value."
+                },
                 "_filterButtons": {
                   "type": "object",
                   "title": "Filter Buttons",

schema/course.schema.json

@@ -108,6 +108,12 @@
                 "translatable": true
               }
             },
+            "_enableFilters": {
+              "type": "boolean",
+              "title": "Enable filter buttons",
+              "default": true,
+              "description": "Turns the filter buttons on and off. Note that the filter buttons will be automatically disabled if all resource items have the same Type value."
+            },
             "_filterButtons": {
               "type": "object",
               "title": "Filter buttons",

templates/resources.jsx

@@ -6,22 +6,12 @@ import { classes, templates } from 'core/js/reactHelpers';
 export default function Resources (props) {
   const {
     resources,
-    resourceTypes
+    resourceTypes,
+    _showFilters,
+    _filterColumnCount
   } = props;
 
   const _globals = Adapt.course.get('_globals');
-
-  function resourcesHasMultipleTypes(resources) {
-    if (resources.length < 2) return false;
-
-    const allSameType = resources.every(_.matcher({ _type: resources[0]._type }));
-    return !allSameType;
-  }
-
-  function resourcesGetColumnCount(resources) {
-    return _.uniq(_.pluck(resources, '_type')).length + 1; // add 1 for the 'All' button column
-  }
-
   const [selectedFilter, setSelectedFilter] = useState('all');
   const [selectedId, setSelectedId] = useState('resources__show-all');
   const [focusFlag, setFocusFlag] = useState(false);
@@ -59,13 +49,12 @@ export default function Resources (props) {
     <div className="resources__inner">
 
       <templates.header {...props.model} />
-
-      {resourcesHasMultipleTypes(resources) &&
+      {_showFilters &&
       <div
         className={classes([
           'resources__filter',
-          `has-${resourcesGetColumnCount(resources)}-columns`,
-          (resourcesGetColumnCount(resources) > 4) && 'has-extra-types'
+          `has-${_filterColumnCount}-columns`,
+          (_filterColumnCount > 4) && 'has-extra-types'
         ])}
       >
         <div className="resources__filter-inner" role="tablist">

templates/resourcesFilterButton.jsx

@@ -5,20 +5,13 @@ export default function ResourcesFilterButton (props) {
   const {
     model,
     onClick,
-    resources,
     selected,
     _filter
   } = props;
 
   const buttonText = model._filterButtons[_filter];
   const ariaLabel = model._filterAria[`${_filter}Aria`];
 
-  function resourcesHasType(resources, type) {
-    return resources.some(_.matcher({ _type: type }));
-  }
-
-  if (!resourcesHasType(resources, _filter) && _filter !== 'all') return null;
-
   return (
     <button
       id={`resources__show-${_filter}`}

templates/resourcesItem.jsx

@@ -1,10 +1,10 @@
 import React from 'react';
-import device from 'core/js/device';
 import { classes } from 'core/js/reactHelpers';
 
 export default function ResourcesItem (props) {
   const {
     _forceDownload,
+    _canDownload,
     _isGlobal,
     _link,
     _type,
@@ -16,20 +16,6 @@ export default function ResourcesItem (props) {
     onResourceItemClicked
   } = props;
 
-  /**
-   * IE doesn't support the 'download' attribute
-   * https://github.com/adaptlearning/adapt_framework/issues/1559
-   * and iOS just opens links with that attribute in the same window
-   * https://github.com/adaptlearning/adapt_framework/issues/1852
-   */
-  function resourcesForceDownload(filename, _forceDownload) {
-    if (device.browser === 'internet explorer' || device.OS === 'ios') {
-      return false;
-    }
-
-    return (_forceDownload || filename);
-  }
-
   return (
     <div
       className={classes([
@@ -43,7 +29,7 @@ export default function ResourcesItem (props) {
       <a href={_link} className="resources__item-btn drawer__item-btn"
         data-type={_type}
         data-index={_index}
-        download={resourcesForceDownload(filename, _forceDownload) && filename }
+        download={(_canDownload && _forceDownload) && filename }
         onClick={onResourceItemClicked}
         target="_blank"
         rel="noreferrer"