[QCascader, QButton, QBreadcrumbs] Add more accessibility

src/qComponents/QBreadcrumbs/src/q-breadcrumbs.scss

@@ -22,6 +22,10 @@
     white-space: nowrap;
     text-overflow: ellipsis;
 
+    &:focus {
+      text-decoration: underline;
+    }
+
     &_exact-active:not(:first-child),
     &_last:not(:first-child) {
       font-weight: var(--font-weight-bold);

src/qComponents/QButton/src/q-button.scss

@@ -29,7 +29,12 @@
     margin-left: 16px;
   }
 
+  &:focus {
+    outline: none;
+  }
+
   &:hover {
+    background-color: var(--color-primary);
     background-image: none;
     box-shadow: -1px -1px 4px rgba(var(--color-rgb-white), 0.25),
       1px 1px 4px rgba(var(--color-rgb-blue), 0.4),
@@ -64,6 +69,13 @@
   }
 
   &_theme {
+    &_primary {
+      &:focus {
+        background-color: var(--color-primary-darker);
+        background-image: none;
+      }
+    }
+
     &_secondary {
       color: var(--color-primary-blue);
       background-color: var(--color-tertiary-gray);
@@ -80,6 +92,11 @@
         outline: none;
         box-shadow: var(--box-shadow-pressed);
       }
+
+      &:focus {
+        color: var(--color-tertiary-white);
+        background-color: var(--color-primary-darker);
+      }
     }
 
     &_link {
@@ -92,6 +109,10 @@
       background-image: none;
       box-shadow: none;
 
+      &:focus {
+        text-decoration: underline;
+      }
+
       &:hover {
         color: var(--color-primary-black);
         background-color: transparent;

src/qComponents/QCascader/QCascader.test.js

@@ -1,5 +1,9 @@
 import Component from './src/QCascader';
 
+const module = require('../helpers');
+
+module.randId = jest.fn();
+
 describe('QCascader', () => {
   let instance;
   let options;
@@ -36,6 +40,9 @@ describe('QCascader', () => {
   });
 
   it('should match snapshot', () => {
+    const spy = prefix => `${prefix}000`;
+    module.randId.mockImplementation(spy);
+    instance = mount(Component, options);
     expect(instance.element).toMatchSnapshot();
   });
 

src/qComponents/QCascader/__snapshots__/QCascader.test.js.snap

@@ -5,6 +5,8 @@ Object {
   "areTagsHovered": false,
   "checkedNodes": Array [],
   "checkedValues": Array [],
+  "focus": false,
+  "id": "q-cascader-000",
   "inputInitialHeight": 0,
   "inputValue": null,
   "popper": null,
@@ -23,11 +25,14 @@ exports[`QCascader should match snapshot 1`] = `
     <!---->
      
     <input
+      aria-controls="q-cascader-000"
+      aria-haspopup="true"
       aria-label=""
       autocomplete="off"
       class="q-input__inner"
       placeholder="placeholder"
       readonly="readonly"
+      role="button"
       tabindex=""
       type="text"
     />
@@ -55,13 +60,15 @@ exports[`QCascader should match snapshot 1`] = `
     class="q-cascader-panel"
   >
     <div
+      aria-labelledby="q-cascader-000"
       class="q-cascader-menu"
+      role="menu"
     >
       <div
         class="q-cascader-menu__wrap"
       >
         <div
-          class="q-scrollbar"
+          class="q-scrollbar q-scrollbar_has-horizontal-bar q-scrollbar_has-vertical-bar"
         >
           <div
             class="q-scrollbar__wrap q-cascader-menu__scrollbar q-scrollbar__wrap_hidden-default"
@@ -71,6 +78,9 @@ exports[`QCascader should match snapshot 1`] = `
             >
               <div
                 class="q-cascader-node"
+                id="q-cascader-000-node-0-0"
+                role="menuitem"
+                tabindex="-1"
               >
                 <!---->
                  
@@ -86,6 +96,9 @@ exports[`QCascader should match snapshot 1`] = `
               </div>
               <div
                 class="q-cascader-node"
+                id="q-cascader-000-node-0-1"
+                role="menuitem"
+                tabindex="-1"
               >
                 <!---->
                  
@@ -102,21 +115,19 @@ exports[`QCascader should match snapshot 1`] = `
            
           <div
             class="q-scrollbar__bar q-scrollbar__bar_horizontal"
-            style="display: none;"
           >
             <div
               class="q-scrollbar__thumb"
-              style="transform: translateX(0%); webkit-transform: translateX(0%);"
+              style="width: 0px; transform: translateX(0%); webkit-transform: translateX(0%);"
             />
           </div>
            
           <div
             class="q-scrollbar__bar q-scrollbar__bar_vertical"
-            style="display: none;"
           >
             <div
               class="q-scrollbar__thumb"
-              style="transform: translateY(0%); webkit-transform: translateY(0%);"
+              style="height: 0px; transform: translateY(0%); webkit-transform: translateY(0%);"
             />
           </div>
         </div>

src/qComponents/QCascader/src/QCascader.vue

@@ -11,14 +11,17 @@
       :placeholder="calcPlaceholder"
       :disabled="isDisabled"
       :validate-event="false"
+      aria-haspopup="true"
+      role="button"
+      :aria-controls="id"
+      :aria-expanded="popper"
       :class="{
         'q-input_focus': Boolean(popper),
         'q-input_hover': areTagsHovered
       }"
-      @focus="handleFocus"
-      @blur="handleBlur"
       @mouseenter.native="handleMouseEnter"
       @mouseleave.native="showClose = false"
+      @focus="handleInputFocus"
       @click="togglePopper"
     >
       <template slot="suffix">
@@ -103,7 +106,7 @@
 <script>
 import { createPopper } from '@popperjs/core';
 import Emitter from '../../mixins/emitter';
-import { addResizeListener, removeResizeListener } from '../../helpers';
+import { addResizeListener, removeResizeListener, randId } from '../../helpers';
 
 import QCascaderPanel from './QCascaderPanel';
 
@@ -252,7 +255,9 @@ export default {
       inputInitialHeight: 0,
       popper: null,
       showClose: false,
-      areTagsHovered: false
+      areTagsHovered: false,
+      focus: false,
+      id: randId('q-cascader-')
     };
   },
 
@@ -329,13 +334,54 @@ export default {
     this.inputInitialHeight = input?.$el?.offsetHeight ?? DEFAULT_INPUT_HEIGHT;
 
     addResizeListener(this.$el, this.updateStyle);
+    document.addEventListener('keyup', this.handleKeyUp, true);
   },
 
   beforeDestroy() {
     removeResizeListener(this.$el, this.updateStyle);
+    document.removeEventListener('keyup', this.handleKeyUp, true);
   },
 
   methods: {
+    handleKeyUp(e) {
+      if (!this.focus) return;
+      if (e.target.classList.contains('q-input__inner') && e.key === 'Enter') {
+        this.togglePopper();
+      }
+
+      switch (e.key) {
+        case 'Escape': {
+          this.$refs.input.blur();
+          this.hidePopper();
+          break;
+        }
+
+        case 'Backspace': {
+          this.deleteTag();
+          break;
+        }
+
+        case 'Tab': {
+          if (!this.$refs.reference.contains(document.activeElement)) {
+            this.hidePopper();
+            this.focus = false;
+          }
+          break;
+        }
+
+        case 'ArrowRight':
+        case 'ArrowUp':
+        case 'ArrowLeft':
+        case 'ArrowDown': {
+          this.$refs.panel.navigateFocus(e);
+          break;
+        }
+
+        default:
+          break;
+      }
+    },
+
     handleTagsHover() {
       this.areTagsHovered = true;
       this.showClose = true;
@@ -353,9 +399,14 @@ export default {
       }
     },
 
-    deleteTag({ value }) {
+    deleteTag({ value } = {}) {
+      if (!this.checkedValues) return;
       const result = new Set(this.checkedValues);
-      result.delete(value);
+      if (value) {
+        result.delete(value);
+      } else {
+        result.delete(this.checkedValues[this.checkedValues.length - 1]);
+      }
       const payload = Array.from(result);
       this.emit(payload.length ? payload : null);
     },
@@ -417,14 +468,10 @@ export default {
       }
     },
 
-    handleFocus(e) {
+    handleInputFocus(e) {
       this.$emit('focus', e);
+      this.focus = true;
     },
-
-    handleBlur(e) {
-      this.$emit('blur', e);
-    },
-
     updateStyle() {
       const { $el, inputInitialHeight } = this;
       if (!$el) return;

src/qComponents/QCascader/src/QCascaderMenu.vue

@@ -11,12 +11,19 @@
         <div
           v-for="(node, key) in nodes"
           v-else
+          :id="`${cascader.id}-node-${index}-${key}`"
           :key="key"
           :class="getNodeClass(node)"
-          @click="e => handleExpand(e, node)"
+          role="menuitem"
+          tabindex="-1"
+          @click="e => expandMenuItem(e, node)"
+          @keyup.enter="e => handleEnterKeyUp(e, node, index, key)"
+          @keyup.right="e => expandMenuItem(e, node)"
         >
           <q-checkbox
             v-if="cascader.multiple"
+            :ref="`QCheckbox${index}${key}`"
+            input-tab-index="-1"
             :value="getChecked(node)"
             :indeterminate="getIndeterminate(node)"
             @change="isChecked => handleValueChange(node, isChecked)"
@@ -110,6 +117,17 @@ export default {
   },
 
   methods: {
+    handleEnterKeyUp(e, node, index, key) {
+      if (this.cascader.multiple) {
+        const QCheckboxInstance = this.$refs[`QCheckbox${index}${key}`]?.[0];
+        if (QCheckboxInstance) {
+          QCheckboxInstance.nativeClick();
+        }
+        return;
+      }
+
+      this.expandMenuItem(e, node);
+    },
     getIndeterminate(node) {
       if (
         !this.cascader.checkedValues ||
@@ -220,7 +238,8 @@ export default {
       };
     },
 
-    handleExpand(e, value) {
+    expandMenuItem(e, value) {
+      if (e.key === 'ArrowRight' && !value.children) return;
       if (!value.children && !this.cascader.multiple) {
         this.cascader.emit(value.value);
       }