Latest updates from IceHrmPro

web/node_modules/rc-util/es/Dom/focus.js

@@ -0,0 +1,79 @@
+function hidden(node) {
+  return node.style.display === 'none';
+}
+
+function visible(node) {
+  while (node) {
+    if (node === document.body) {
+      break;
+    }
+
+    if (hidden(node)) {
+      return false;
+    }
+
+    node = node.parentNode;
+  }
+
+  return true;
+}
+
+function focusable(node) {
+  var nodeName = node.nodeName.toLowerCase();
+  var tabIndex = parseInt(node.getAttribute('tabindex'), 10);
+  var hasTabIndex = !isNaN(tabIndex) && tabIndex > -1;
+
+  if (visible(node)) {
+    if (['input', 'select', 'textarea', 'button'].indexOf(nodeName) > -1) {
+      return !node.disabled;
+    } else if (nodeName === 'a') {
+      return node.getAttribute('href') || hasTabIndex;
+    }
+
+    return node.isContentEditable || hasTabIndex;
+  }
+}
+
+export function getFocusNodeList(node) {
+  var res = [].slice.call(node.querySelectorAll('*'), 0).filter(function (child) {
+    return focusable(child);
+  });
+
+  if (focusable(node)) {
+    res.unshift(node);
+  }
+
+  return res;
+}
+var lastFocusElement = null;
+export function saveLastFocusNode() {
+  lastFocusElement = document.activeElement;
+}
+export function clearLastFocusNode() {
+  lastFocusElement = null;
+}
+export function backLastFocusNode() {
+  if (lastFocusElement) {
+    try {
+      // 元素可能已经被移动了
+      lastFocusElement.focus();
+      /* eslint-disable no-empty */
+    } catch (e) {} // empty
+
+    /* eslint-enable no-empty */
+
+  }
+}
+export function limitTabRange(node, e) {
+  if (e.keyCode === 9) {
+    var tabNodeList = getFocusNodeList(node);
+    var lastTabNode = tabNodeList[e.shiftKey ? 0 : tabNodeList.length - 1];
+    var leavingTab = lastTabNode === document.activeElement || node === document.activeElement;
+
+    if (leavingTab) {
+      var target = tabNodeList[e.shiftKey ? tabNodeList.length - 1 : 0];
+      target.focus();
+      e.preventDefault();
+    }
+  }
+}