add hw2

node_modules/@react-aria/interactions/dist/useFocusWithin.main.js

@@ -0,0 +1,105 @@
+var $625cf83917e112ad$exports = require("./utils.main.js");
+var $kDAhS$react = require("react");
+var $kDAhS$reactariautils = require("@react-aria/utils");
+
+
+function $parcel$export(e, n, v, s) {
+  Object.defineProperty(e, n, {get: v, set: s, enumerable: true, configurable: true});
+}
+
+$parcel$export(module.exports, "useFocusWithin", () => $d16842bbd0359d1b$export$420e68273165f4ec);
+/*
+ * Copyright 2020 Adobe. All rights reserved.
+ * This file is licensed to you 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 REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */ // Portions of the code in this file are based on code from react.
+// Original licensing for the following can be found in the
+// NOTICE file in the root directory of this source tree.
+// See https://github.com/facebook/react/tree/cc7c1aece46a6b69b41958d731e0fd27c94bfc6c/packages/react-interactions
+
+
+
+function $d16842bbd0359d1b$export$420e68273165f4ec(props) {
+    let { isDisabled: isDisabled, onBlurWithin: onBlurWithin, onFocusWithin: onFocusWithin, onFocusWithinChange: onFocusWithinChange } = props;
+    let state = (0, $kDAhS$react.useRef)({
+        isFocusWithin: false
+    });
+    let { addGlobalListener: addGlobalListener, removeAllGlobalListeners: removeAllGlobalListeners } = (0, $kDAhS$reactariautils.useGlobalListeners)();
+    let onBlur = (0, $kDAhS$react.useCallback)((e)=>{
+        // Ignore events bubbling through portals.
+        if (!e.currentTarget.contains(e.target)) return;
+        // We don't want to trigger onBlurWithin and then immediately onFocusWithin again
+        // when moving focus inside the element. Only trigger if the currentTarget doesn't
+        // include the relatedTarget (where focus is moving).
+        if (state.current.isFocusWithin && !e.currentTarget.contains(e.relatedTarget)) {
+            state.current.isFocusWithin = false;
+            removeAllGlobalListeners();
+            if (onBlurWithin) onBlurWithin(e);
+            if (onFocusWithinChange) onFocusWithinChange(false);
+        }
+    }, [
+        onBlurWithin,
+        onFocusWithinChange,
+        state,
+        removeAllGlobalListeners
+    ]);
+    let onSyntheticFocus = (0, $625cf83917e112ad$exports.useSyntheticBlurEvent)(onBlur);
+    let onFocus = (0, $kDAhS$react.useCallback)((e)=>{
+        // Ignore events bubbling through portals.
+        if (!e.currentTarget.contains(e.target)) return;
+        // Double check that document.activeElement actually matches e.target in case a previously chained
+        // focus handler already moved focus somewhere else.
+        const ownerDocument = (0, $kDAhS$reactariautils.getOwnerDocument)(e.target);
+        const activeElement = (0, $kDAhS$reactariautils.getActiveElement)(ownerDocument);
+        if (!state.current.isFocusWithin && activeElement === (0, $kDAhS$reactariautils.getEventTarget)(e.nativeEvent)) {
+            if (onFocusWithin) onFocusWithin(e);
+            if (onFocusWithinChange) onFocusWithinChange(true);
+            state.current.isFocusWithin = true;
+            onSyntheticFocus(e);
+            // Browsers don't fire blur events when elements are removed from the DOM.
+            // However, if a focus event occurs outside the element we're tracking, we
+            // can manually fire onBlur.
+            let currentTarget = e.currentTarget;
+            addGlobalListener(ownerDocument, 'focus', (e)=>{
+                if (state.current.isFocusWithin && !(0, $kDAhS$reactariautils.nodeContains)(currentTarget, e.target)) {
+                    let nativeEvent = new ownerDocument.defaultView.FocusEvent('blur', {
+                        relatedTarget: e.target
+                    });
+                    (0, $625cf83917e112ad$exports.setEventTarget)(nativeEvent, currentTarget);
+                    let event = (0, $625cf83917e112ad$exports.createSyntheticEvent)(nativeEvent);
+                    onBlur(event);
+                }
+            }, {
+                capture: true
+            });
+        }
+    }, [
+        onFocusWithin,
+        onFocusWithinChange,
+        onSyntheticFocus,
+        addGlobalListener,
+        onBlur
+    ]);
+    if (isDisabled) return {
+        focusWithinProps: {
+            // These cannot be null, that would conflict in mergeProps
+            onFocus: undefined,
+            onBlur: undefined
+        }
+    };
+    return {
+        focusWithinProps: {
+            onFocus: onFocus,
+            onBlur: onBlur
+        }
+    };
+}
+
+
+//# sourceMappingURL=useFocusWithin.main.js.map