feat: add setAriaLabel to Grid (#6878)

Co-authored-by: Serhii Kulykov <iamkulykov@gmail.com>

vaadin-grid-flow-parent/vaadin-grid-flow/src/main/java/com/vaadin/flow/component/grid/Grid.java

@@ -3671,6 +3671,30 @@ private void updateContextMenuTargetItem(String key, String colId) {
         getElement().setProperty("_contextMenuTargetColumnId", colId);
     }
 
+    /**
+     * Set the aria-label of the component to the given text.
+     *
+     * @param ariaLabel
+     *            the aria-label text to set or {@code null} to clear
+     */
+    public void setAriaLabel(String ariaLabel) {
+        if (ariaLabel == null) {
+            getElement().removeProperty("accessibleName");
+        } else {
+            getElement().setProperty("accessibleName", ariaLabel);
+        }
+    }
+
+    /**
+     * Gets the aria-label of the component.
+     *
+     * @return an optional aria-label of the component if no aria-label has been
+     *         set
+     */
+    public Optional<String> getAriaLabel() {
+        return Optional.ofNullable(getElement().getProperty("accessibleName"));
+    }
+
     /**
      * Adds a new context-menu for this grid.
      *

vaadin-grid-flow-parent/vaadin-grid-flow/src/test/java/com/vaadin/flow/component/grid/GridTest.java

@@ -131,6 +131,20 @@ public void setAllRowsVisible_setSmallPageSize_callSetRequestedRangeWithLengthLa
         callSetRequestedRange(grid, 0, 600);
     }
 
+    @Test
+    public void setAriaLabel() {
+        final Grid<String> grid = new Grid<>();
+        grid.setAriaLabel("test");
+        Assert.assertTrue(grid.getAriaLabel().isPresent());
+        Assert.assertEquals("test", grid.getAriaLabel().get());
+        Assert.assertEquals("test",
+                grid.getElement().getProperty("accessibleName"));
+
+        grid.setAriaLabel(null);
+        Assert.assertFalse(grid.getAriaLabel().isPresent());
+        Assert.assertFalse(grid.getElement().hasProperty("accessibleName"));
+    }
+
     private void callSetRequestedRange(Grid<String> grid, int start,
             int length) {
         try {