fix(conditional styling): conditional visibility for images and alpha-numerics in display layouts (#7824)

* fix: apply `is-style-invisible` className to image and alphanumeric items

* test: generate storagestate file with basic condition set

* refactor: small a11y additions for Toolbars

* test: add suite for display layout conditional styling

* fix: make condition true half of the time

* fix: use a period of 5 so tests are more stable

* test: mark as slow

* test: use inline base64 image text instead of a url

* fix: use vue reactivity system to conditionally show these objects

* test: use tiny base64 image

* fix: condition for v-show

* fix: use both v-if and v-show to toggle visibility

* refactor: convert to ES6 class

* fix: remove focused test

* fix: switch back to a div due to visual artifacts. settle for an aria role instead

- IT'S CALLED COMPROMISE!

e2e/tests/framework/generateLocalStorageData.e2e.spec.js

@@ -286,6 +286,55 @@ test.describe('Generate Visual Test Data @localStorage @generatedata @clock', ()
   });
 });
 
+test.describe('Generate Conditional Styling Data @localStorage @generatedata', () => {
+  test('Generate basic condition set', async ({ page, context }) => {
+    await page.goto('./', { waitUntil: 'domcontentloaded' });
+    // Create a Condition Set
+    const conditionSet = await createDomainObjectWithDefaults(page, {
+      type: 'Condition Set',
+      name: 'Test Condition Set'
+    });
+
+    // Create a Telemetry Object (Sine Wave Generator)
+    const swg = await createExampleTelemetryObject(page, conditionSet.uuid);
+
+    // Edit the Telemetry Object to have a 10hz data rate (Gotta go fast!)
+    await page.goto(swg.url);
+    await page.getByLabel('More actions').click();
+    await page.getByRole('menuitem', { name: 'Edit Properties...' }).click();
+    await page.getByLabel('Period', { exact: true }).fill('5');
+    await page.getByLabel('Save').click();
+
+    // Edit the Condition Set
+    await page.goto(conditionSet.url);
+    await page.getByLabel('Edit Object').click();
+
+    // Add a Condition to the Condition Set
+    await page.getByLabel('Add Condition').click();
+    await page.getByLabel('Condition Name Input').first().fill('Test Condition');
+    await page.getByLabel('Condition Output Type').first().selectOption('String');
+    await page.getByLabel('Condition Output String').first().fill('Test Condition Met');
+
+    // Condition: True if sine value > 0 (half the time)
+    await page.getByLabel('Criterion Telemetry Selection').selectOption(swg.name);
+    await page.getByLabel('Criterion Metadata Selection').selectOption('Sine');
+    await page.getByLabel('Criterion Comparison Selection').selectOption('is greater than');
+    await page.getByLabel('Criterion Input').first().fill('0');
+
+    // Rename default condition
+    await page.getByLabel('Condition Output String').nth(1).fill('Test Condition Unmet');
+    await page.getByLabel('Save').click();
+    await page.getByRole('listitem', { name: 'Save and Finish Editing' }).click();
+
+    // Save localStorage for future test execution
+    await context.storageState({
+      path: fileURLToPath(
+        new URL('../../../e2e/test-data/condition_set_storage.json', import.meta.url)
+      )
+    });
+  });
+});
+
 test.describe('Validate Overlay Plot with Telemetry Object @localStorage @generatedata', () => {
   test.use({
     storageState: fileURLToPath(

e2e/tests/functional/plugins/styling/conditional/displayLayoutConditionalStyling.e2e.spec.js

@@ -0,0 +1,114 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2024, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+import { fileURLToPath } from 'url';
+
+import {
+  createDomainObjectWithDefaults,
+  navigateToObjectWithRealTime
+} from '../../../../../appActions.js';
+import { expect, test } from '../../../../../pluginFixtures.js';
+
+const TINY_IMAGE_BASE64 =
+  'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIAQMAAAD+wSzIAAAABlBMVEX///+/v7+jQ3Y5AAAADklEQVQI12P4AIX8EAgALgAD/aNpbtEAAAAASUVORK5CYII';
+
+test.describe('Display Layout Conditional Styling', () => {
+  test.use({
+    storageState: fileURLToPath(
+      new URL('../../../../../test-data/condition_set_storage.json', import.meta.url)
+    )
+  });
+
+  let displayLayout;
+  test.beforeEach(async ({ page }) => {
+    await page.goto('./', { waitUntil: 'domcontentloaded' });
+    displayLayout = await createDomainObjectWithDefaults(page, {
+      type: 'Display Layout',
+      name: 'Test Display Layout'
+    });
+  });
+
+  test('Image Drawing Object can have visibility toggled conditionally', async ({ page }) => {
+    await page.getByLabel('Edit Object').click();
+
+    // Add Image Drawing Object to the layout
+    await page.getByLabel('Add Drawing Object').click();
+    await page.getByLabel('Image').click();
+    await page.getByLabel('Image URL').fill(TINY_IMAGE_BASE64);
+    await page.getByText('Ok').click();
+
+    // Use the "Test Condition Set" for conditional styling on the image
+    await page.getByRole('tab', { name: 'Styles' }).click();
+    await page.getByRole('button', { name: 'Use Conditional Styling...' }).click();
+    await page.getByLabel('Modal Overlay').getByLabel('Expand My Items folder').click();
+    await page.getByLabel('Modal Overlay').getByLabel('Preview Test Condition Set').click();
+    await page.getByText('Ok').click();
+
+    // Set the image to be hidden when the condition is met
+    await page.getByTitle('Visible').first().click();
+    await page.getByLabel('Save Style').first().click();
+    await page.getByLabel('Save', { exact: true }).click();
+    await page.getByRole('listitem', { name: 'Save and Finish Editing' }).click();
+
+    // Switch to real-time mode and verify that the image toggles visibility
+    await navigateToObjectWithRealTime(page, displayLayout.url);
+    await expect(page.getByLabel('Image View')).toBeVisible();
+    await expect(page.getByLabel('Image View')).toBeHidden();
+
+    // Reload the page and verify that the image toggles visibility
+    await page.reload({ waitUntil: 'domcontentloaded' });
+    await expect(page.getByLabel('Image View')).toBeVisible();
+    await expect(page.getByLabel('Image View')).toBeHidden();
+  });
+
+  test('Alphanumeric object can have visibility toggled conditionally', async ({ page }) => {
+    await page.getByLabel('Edit Object').click();
+
+    // Add Alphanumeric Object to the layout
+    await page.getByLabel('Expand My Items folder').click();
+    await page.getByLabel('Expand Test Condition Set').click();
+    await page.getByLabel('Preview VIPER Rover Heading').dragTo(page.getByLabel('Layout Grid'));
+
+    // Use the "Test Condition Set" for conditional styling on the alphanumeric
+    await page.getByRole('tab', { name: 'Styles' }).click();
+    await page.getByRole('button', { name: 'Use Conditional Styling...' }).click();
+    await page.getByLabel('Modal Overlay').getByLabel('Expand My Items folder').click();
+    await page.getByLabel('Modal Overlay').getByLabel('Preview Test Condition Set').click();
+    await page.getByText('Ok').click();
+
+    // Set the alphanumeric to be hidden when the condition is met
+    await page.getByTitle('Visible').first().click();
+    await page.getByLabel('Save Style').first().click();
+    await page.getByLabel('Save', { exact: true }).click();
+    await page.getByRole('listitem', { name: 'Save and Finish Editing' }).click();
+
+    // Switch to real-time mode and verify that the image toggles visibility
+    await navigateToObjectWithRealTime(page, displayLayout.url);
+    await expect(page.getByLabel('Alpha-numeric telemetry', { exact: true })).toBeVisible();
+    await expect(page.getByLabel('Alpha-numeric telemetry', { exact: true })).toBeHidden();
+
+    // Reload the page and verify that the alphanumeric toggles visibility
+    await page.reload({ waitUntil: 'domcontentloaded' });
+    await expect(page.getByLabel('Alpha-numeric telemetry', { exact: true })).toBeVisible();
+    await expect(page.getByLabel('Alpha-numeric telemetry', { exact: true })).toBeHidden();
+  });
+});

src/plugins/condition/components/ConditionCollection.vue

@@ -27,14 +27,16 @@
     aria-label="Condition Set Condition Collection"
   >
     <div class="c-cs__header c-section__header">
-      <span
+      <button
         class="c-disclosure-triangle c-tree__item__view-control is-enabled"
         :class="{ 'c-disclosure-triangle--expanded': expanded }"
-        @click="expanded = !expanded"
-      ></span>
+        :aria-expanded="expanded"
+        aria-controls="conditionContent"
+        @click="toggleExpanded"
+      ></button>
       <div class="c-cs__header-label c-section__label">Conditions</div>
     </div>
-    <div v-if="expanded" class="c-cs__content">
+    <div v-if="expanded" id="conditionContent" class="c-cs__content">
       <div
         v-show="isEditing"
         class="hint"
@@ -54,9 +56,10 @@
         v-show="isEditing"
         id="addCondition"
         class="c-button c-button--major icon-plus labeled"
+        aria-labelledby="addConditionButtonLabel"
         @click="addCondition"
       >
-        <span class="c-cs-button__label">Add Condition</span>
+        <span id="addConditionButtonLabel" class="c-cs-button__label">Add Condition</span>
       </button>
 
       <div class="c-cs__conditions-h" :class="{ 'is-active-dragging': isDragging }">

src/plugins/displayLayout/components/ImageView.vue

@@ -29,7 +29,7 @@
     @end-move="endMove"
   >
     <template #content>
-      <div class="c-image-view" :style="style"></div>
+      <div v-show="showImage" aria-label="Image View" class="c-image-view" :style="style"></div>
     </template>
   </LayoutFrame>
 </template>
@@ -76,6 +76,9 @@ export default {
   },
   emits: ['move', 'end-move'],
   computed: {
+    showImage() {
+      return this.isEditing || !this.itemStyle?.isStyleInvisible;
+    },
     style() {
       let backgroundImage = 'url(' + this.item.url + ')';
       let border = '1px solid ' + this.item.stroke;

src/plugins/displayLayout/components/TelemetryView.vue

@@ -31,9 +31,10 @@
     <template #content>
       <div
         v-if="domainObject"
+        v-show="showTelemetry"
         ref="telemetryViewWrapper"
         class="c-telemetry-view u-style-receiver"
-        :class="[itemClasses]"
+        :class="classNames"
         :style="styleObject"
         :data-font-size="item.fontSize"
         :data-font="item.font"
@@ -151,7 +152,10 @@ export default {
     };
   },
   computed: {
-    itemClasses() {
+    showTelemetry() {
+      return this.isEditing || !this.itemStyle?.isStyleInvisible;
+    },
+    classNames() {
       let classes = [];
 
       if (this.status) {

src/ui/registries/ToolbarRegistry.js

@@ -25,18 +25,19 @@
  *
  * @interface ToolbarRegistry
  */
-export default function ToolbarRegistry() {
+export default class ToolbarRegistry {
+  constructor() {
     this.providers = {};
-}
+  }
 
-/**
+  /**
    * Gets toolbar controls from providers which can provide a toolbar for this selection.
    *
    * @param {Object} selection the selection object
    * @returns {Object[]} an array of objects defining controls for the toolbar
    * @private for platform-internal use
    */
-ToolbarRegistry.prototype.get = function (selection) {
+  get(selection) {
     const providers = this.getAllProviders().filter(function (provider) {
       return provider.forSelection(selection);
     });
@@ -48,29 +49,29 @@ ToolbarRegistry.prototype.get = function (selection) {
     });
 
     return structure;
-};
+  }
 
-/**
+  /**
    * @private
    */
-ToolbarRegistry.prototype.getAllProviders = function () {
+  getAllProviders() {
     return Object.values(this.providers);
-};
+  }
 
-/**
+  /**
    * @private
    */
-ToolbarRegistry.prototype.getByProviderKey = function (key) {
+  getByProviderKey(key) {
     return this.providers[key];
-};
+  }
 
-/**
+  /**
    * Registers a new type of toolbar.
    *
    * @param {module:openmct.ToolbarRegistry} provider the provider for this toolbar
    * @method addProvider
    */
-ToolbarRegistry.prototype.addProvider = function (provider) {
+  addProvider(provider) {
     const key = provider.key;
 
     if (key === undefined) {
@@ -82,7 +83,8 @@ ToolbarRegistry.prototype.addProvider = function (provider) {
     }
 
     this.providers[key] = provider;
-};
+  }
+}
 
 /**
  * Exposes types of toolbars in Open MCT.

src/ui/toolbar/components/ToolbarButton.vue

@@ -34,9 +34,9 @@
       }"
       @click="onClick"
     >
-      <div v-if="options.label" class="c-icon-button__label">
+      <span v-if="options.label" class="c-icon-button__label">
         {{ options.label }}
-      </div>
+      </span>
     </div>
   </div>
 </template>

src/ui/toolbar/components/ToolbarMenu.vue

@@ -25,11 +25,13 @@
       class="c-icon-button c-icon-button--menu"
       :class="options.icon"
       :title="options.title"
+      :aria-label="options.label"
+      role="button"
       @click="toggle"
     >
-      <div v-if="options.label" class="c-icon-button__label">
+      <span v-if="options.label" class="c-icon-button__label">
         {{ options.label }}
-      </div>
+      </span>
     </div>
     <div v-if="open" class="c-menu" role="menu">
       <ul>