Update web-platform-tests to revision 5e0db3c717532a88040300e65ce7c8b29004d93c

tests/wpt/web-platform-tests/css/css-pseudo/support/selections.js

@@ -0,0 +1,60 @@
+/**
+ * Replaces the current selection (if any) with a new range, after
+ * it’s configured by the given function.
+ */
+function selectRangeWith(fun) {
+    const selection = getSelection();
+
+    // Deselect any ranges that happen to be selected, to prevent the
+    // Selection#addRange call from ignoring our new range (see
+    // <https://www.chromestatus.com/feature/6680566019653632> for
+    // more details).
+    selection.removeAllRanges();
+
+    // Create and configure a range.
+    const range = document.createRange();
+    fun(range);
+
+    // Select our new range.
+    selection.addRange(range);
+}
+
+/**
+ * Replaces the current selection (if any) with a new range, spanning
+ * the contents of the given node.
+ */
+function selectNodeContents(node) {
+    const previousActive = document.activeElement;
+
+    selectRangeWith(range => range.selectNodeContents(node));
+
+    // If the selection update causes the node or an ancestor to be
+    // focused (Chromium 80+), unfocus it, to avoid any focus-related
+    // styling such as outlines.
+    if (document.activeElement != previousActive) {
+        document.activeElement.blur();
+    }
+}
+
+/**
+ * Tries to convince a UA with lazy spellcheck to check and mark the
+ * contents of the given nodes (form fields or @contenteditables).
+ *
+ * Both focus and selection can be used for this purpose, but only
+ * focus works for @contenteditables.
+ */
+function trySpellcheck(...nodes) {
+    // This is inherently a flaky test risk, but Chromium (as of 87)
+    // seems to cancel spellcheck on a node if it wasn’t the last one
+    // focused for “long enough” (though immediate unfocus is ok).
+    // setInterval(0) is usually not long enough.
+    const interval = setInterval(() => {
+        if (nodes.length > 0) {
+            const node = nodes.shift();
+            node.focus();
+            node.blur();
+        } else {
+            clearInterval(interval);
+        }
+    }, 250);
+}