fix: Render Word cloud block editor in libraries [FC-0076] (#36199)

* fix: Render Word cloud and conditional block editor

- The xmodule-type to render is MetadataOnlyEditingDescriptor
- The xmodule type `MetadataOnlyEditingDescriptor` renders a `<div>` with the block metadata in the `data-metadata` attribute. But is necessary to call `XBlockEditorView.xblockReady()` to run the scripts to build the editor using the metadata.
- To call XBlockEditorView.xblockReady() we need a specific require.config

* fix: Adding save and cancel button

* fix: save with studio_submit of conditional_block and word_cloud_block

* test: Tests for studio_submit of conditional and word cloud

* revert: Delete studio_submit of conditional block. It is not supported

* style: Fix lint

---------

Co-authored-by: Navin Karkera <navin@opencraft.com>

cms/static/js/views/xblock_editor.js

@@ -78,7 +78,7 @@ function($, _, gettext, BaseView, XBlockView, MetadataView, MetadataCollection)
                     el: metadataEditor,
                     collection: new MetadataCollection(models)
                 });
-                if (xblock.setMetadataEditor) {
+                if (xblock && xblock.setMetadataEditor) {
                     xblock.setMetadataEditor(metadataView);
                 }
             }

common/templates/xblock_v2/xblock_iframe.html

@@ -35,23 +35,43 @@
   <script type="text/javascript" src="{{ lms_root_url }}/static/common/js/vendor/require.js"></script>
   <script type="text/javascript" src="{{ lms_root_url }}/static/js/RequireJS-namespace-undefine.js"></script>
   <script>
-    // The minimal RequireJS configuration required for common LMS building XBlock types to work:
+    // The minimal RequireJS configuration required for common LMS and CMS building XBlock types to work:
+    require = require || RequireJS.require;
+    define = define || RequireJS.define;
     (function (require, define) {
-        require.config({
-            baseUrl: "{{ lms_root_url }}/static/",
-            paths: {
-                accessibility: 'js/src/accessibility_tools',
-                draggabilly: 'js/vendor/draggabilly',
-                hls: 'common/js/vendor/hls',
-                moment: 'common/js/vendor/moment-with-locales',
-                HtmlUtils: 'edx-ui-toolkit/js/utils/html-utils',
-            },
-        });
+        if ('{{ view_name | safe }}' === 'studio_view') {
+          // Call `require-config.js` of the CMS
+          var script = document.createElement('script');
+          script.type = 'text/javascript';
+          script.src = "{{ cms_root_url }}/static/studio/cms/js/require-config.js";
+          document.head.appendChild(script);
+
+          require.config({
+              baseUrl: "{{ cms_root_url }}/static/studio",
+              paths: {
+                  accessibility: 'js/src/accessibility_tools',
+                  draggabilly: 'js/vendor/draggabilly',
+                  hls: 'common/js/vendor/hls',
+                  moment: 'common/js/vendor/moment-with-locales',
+              },
+          });
+        } else {
+          require.config({
+              baseUrl: "{{ lms_root_url }}/static/",
+              paths: {
+                  accessibility: 'js/src/accessibility_tools',
+                  draggabilly: 'js/vendor/draggabilly',
+                  hls: 'common/js/vendor/hls',
+                  moment: 'common/js/vendor/moment-with-locales',
+                  HtmlUtils: 'edx-ui-toolkit/js/utils/html-utils',
+              },
+          });
+        }
         define('gettext', [], function() { return window.gettext; });
         define('jquery', [], function() { return window.jQuery; });
         define('jquery-migrate', [], function() { return window.jQuery; });
         define('underscore', [], function() { return window._; });
-    }).call(this, require || RequireJS.require, define || RequireJS.define);
+    }).call(this, require, define);
   </script>
   <!-- edX HTML Utils requires GlobalLoader -->
   <script type="text/javascript" src="{{ lms_root_url }}/static/edx-ui-toolkit/js/utils/global-loader.js"></script>
@@ -269,6 +289,82 @@
                 // const passElement = isStudioView && (window as any).$ ? (window as any).$(element) : element;
                 const blockJS = new InitFunction(runtime, element, data) || {};
                 blockJS.element = element;
+
+                if (['MetadataOnlyEditingDescriptor', 'SequenceDescriptor'].includes(data['xmodule-type'])) {
+                    // The xmodule type `MetadataOnlyEditingDescriptor` and `SequenceDescriptor` renders a `<div>` with
+                    // the block metadata in the `data-metadata` attribute. But is necessary
+                    // to call `XBlockEditorView.xblockReady()` to run the scripts to build the
+                    // editor using the metadata.
+                    require(['{{ cms_root_url }}/static/studio/js/views/xblock_editor.js'], function(XBlockEditorView) {
+                        var editorView = new XBlockEditorView({
+                            el: element,
+                            xblock: blockJS,
+                        });
+                        // To render block using metadata
+                        editorView.xblockReady(blockJS);
+
+                        // Adding cancel and save buttons
+                        var xblockActions = `
+                            <div class="xblock-actions">
+                                <ul>
+                                    <li class="action-item">
+                                        <input id="poll-submit-options" type="submit" class="button action-primary save-button" value="Save" onclick="return false;">
+                                    </li>
+                                    <li class="action-item">
+                                        <a href="#" class="button cancel-button">Cancel</a>
+                                    </li>
+                                </ul>
+                            </div>
+                        `;
+                        element.innerHTML += xblockActions;
+
+                        const views = editorView.getMetadataEditor().views;
+                        Object.values(views).forEach(view => {
+                            const uniqueId = view.uniqueId;
+                            const input = element.querySelector(`#${uniqueId}`);
+                            if (input) {
+                                input.addEventListener("input", function(event) {
+                                    view.model.setValue(event.target.value);
+                                });
+                            }
+                        });
+
+                        // Adding cancel functionality
+                        $('.cancel-button', element).bind('click', function() {
+                            runtime.notify('cancel', {});
+                            event.preventDefault();
+                        });
+
+                        // Adding save functionality
+                        $('.save-button', element).bind('click', function() {
+                            //event.preventDefault();
+                            var error_message_div = $('.xblock-editor-error-message', element);
+                            const modifiedData = editorView.getChangedMetadata();
+
+                            error_message_div.html();
+                            error_message_div.css('display', 'none');
+
+                            var handlerUrl = runtime.handlerUrl(element, 'studio_submit');
+
+                            runtime.notify('save', {state: 'start', message: gettext("Saving")});
+
+                            $.post(handlerUrl, JSON.stringify(modifiedData)).done(function(response) {
+                                if (response.result === 'success') {
+                                    runtime.notify('save', {state: 'end'})
+                                    window.location.reload(false);
+                                } else {
+                                    runtime.notify('error', {
+                                        'title': 'Error saving changes',
+                                        'message': response.message,
+                                    });
+                                    error_message_div.html('Error: '+response.message);
+                                    error_message_div.css('display', 'block');
+                                }
+                            });         
+                        });
+                    });
+                }
+
                 callback(blockJS);
             } else {
                 const blockJS = { element };

xmodule/tests/test_word_cloud.py

@@ -6,6 +6,7 @@ from unittest.mock import Mock
 from django.test import TestCase
 from fs.memoryfs import MemoryFS
 from lxml import etree
+from webob import Request
 from opaque_keys.edx.locator import BlockUsageLocator, CourseLocator
 from webob.multidict import MultiDict
 from xblock.field_data import DictFieldData
@@ -115,3 +116,29 @@ class WordCloudBlockTest(TestCase):
                {'content_type': 'Word Cloud',
                 'content': {'display_name': 'Word Cloud Block',
                             'instructions': 'Enter some random words that comes to your mind'}}
+
+    def test_studio_submit_handler(self):
+        """
+        Test studio_submint handler
+        """
+        TEST_SUBMIT_DATA = {
+            'display_name': "New Word Cloud",
+            'instructions': "This is a Test",
+            'num_inputs': 5,
+            'num_top_words': 10,
+            'display_student_percents': 'False',
+        }
+        module_system = get_test_system()
+        block = WordCloudBlock(module_system, DictFieldData(self.raw_field_data), Mock())
+        body = json.dumps(TEST_SUBMIT_DATA)
+        request = Request.blank('/')
+        request.method = 'POST'
+        request.body = body.encode('utf-8')
+        res = block.handle('studio_submit', request)
+        assert json.loads(res.body.decode('utf8')) == {'result': 'success'}
+
+        assert block.display_name == TEST_SUBMIT_DATA['display_name']
+        assert block.instructions == TEST_SUBMIT_DATA['instructions']
+        assert block.num_inputs == TEST_SUBMIT_DATA['num_inputs']
+        assert block.num_top_words == TEST_SUBMIT_DATA['num_top_words']
+        assert block.display_student_percents == (TEST_SUBMIT_DATA['display_student_percents'] == "True")

xmodule/word_cloud_block.py

@@ -315,6 +315,26 @@ class _BuiltInWordCloudBlock(  # pylint: disable=abstract-method
 
         return xblock_body
 
+    @XBlock.json_handler
+    def studio_submit(self, submissions, suffix=''):  # pylint: disable=unused-argument
+        """
+        Change the settings for this XBlock given by the Studio user
+        """
+        if 'display_name' in submissions:
+            self.display_name = submissions['display_name']
+        if 'instructions' in submissions:
+            self.instructions = submissions['instructions']
+        if 'num_inputs' in submissions:
+            self.num_inputs = submissions['num_inputs']
+        if 'num_top_words' in submissions:
+            self.num_top_words = submissions['num_top_words']
+        if 'display_student_percents' in submissions:
+            self.display_student_percents = submissions['display_student_percents'] == 'True'
+
+        return {
+            'result': 'success',
+        }
+
 
 WordCloudBlock = (
     _ExtractedWordCloudBlock if settings.USE_EXTRACTED_WORD_CLOUD_BLOCK