bc518174
 王天杨
提交两个项目文件
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
"use client";
// packages/react/focus-scope/src/focus-scope.tsx
import * as React from "react";
import { useComposedRefs } from "@radix-ui/react-compose-refs";
import { Primitive } from "@radix-ui/react-primitive";
import { useCallbackRef } from "@radix-ui/react-use-callback-ref";
import { jsx } from "react/jsx-runtime";
var AUTOFOCUS_ON_MOUNT = "focusScope.autoFocusOnMount";
var AUTOFOCUS_ON_UNMOUNT = "focusScope.autoFocusOnUnmount";
var EVENT_OPTIONS = { bubbles: false, cancelable: true };
var FOCUS_SCOPE_NAME = "FocusScope";
var FocusScope = React.forwardRef((props, forwardedRef) => {
const {
loop = false,
trapped = false,
onMountAutoFocus: onMountAutoFocusProp,
onUnmountAutoFocus: onUnmountAutoFocusProp,
...scopeProps
} = props;
const [container, setContainer] = React.useState(null);
const onMountAutoFocus = useCallbackRef(onMountAutoFocusProp);
const onUnmountAutoFocus = useCallbackRef(onUnmountAutoFocusProp);
const lastFocusedElementRef = React.useRef(null);
const composedRefs = useComposedRefs(forwardedRef, (node) => setContainer(node));
const focusScope = React.useRef({
paused: false,
pause() {
this.paused = true;
},
resume() {
this.paused = false;
}
}).current;
React.useEffect(() => {
if (trapped) {
let handleFocusIn2 = function(event) {
if (focusScope.paused || !container) return;
const target = event.target;
if (container.contains(target)) {
lastFocusedElementRef.current = target;
} else {
focus(lastFocusedElementRef.current, { select: true });
}
}, handleFocusOut2 = function(event) {
if (focusScope.paused || !container) return;
const relatedTarget = event.relatedTarget;
if (relatedTarget === null) return;
if (!container.contains(relatedTarget)) {
focus(lastFocusedElementRef.current, { select: true });
}
}, handleMutations2 = function(mutations) {
const focusedElement = document.activeElement;
if (focusedElement !== document.body) return;
for (const mutation of mutations) {
if (mutation.removedNodes.length > 0) focus(container);
}
};
var handleFocusIn = handleFocusIn2, handleFocusOut = handleFocusOut2, handleMutations = handleMutations2;
document.addEventListener("focusin", handleFocusIn2);
document.addEventListener("focusout", handleFocusOut2);
const mutationObserver = new MutationObserver(handleMutations2);
if (container) mutationObserver.observe(container, { childList: true, subtree: true });
return () => {
document.removeEventListener("focusin", handleFocusIn2);
document.removeEventListener("focusout", handleFocusOut2);
mutationObserver.disconnect();
};
}
}, [trapped, container, focusScope.paused]);
React.useEffect(() => {
if (container) {
focusScopesStack.add(focusScope);
const previouslyFocusedElement = document.activeElement;
const hasFocusedCandidate = container.contains(previouslyFocusedElement);
if (!hasFocusedCandidate) {
const mountEvent = new CustomEvent(AUTOFOCUS_ON_MOUNT, EVENT_OPTIONS);
container.addEventListener(AUTOFOCUS_ON_MOUNT, onMountAutoFocus);
container.dispatchEvent(mountEvent);
if (!mountEvent.defaultPrevented) {
focusFirst(removeLinks(getTabbableCandidates(container)), { select: true });
if (document.activeElement === previouslyFocusedElement) {
focus(container);
}
}
}
return () => {
container.removeEventListener(AUTOFOCUS_ON_MOUNT, onMountAutoFocus);
setTimeout(() => {
const unmountEvent = new CustomEvent(AUTOFOCUS_ON_UNMOUNT, EVENT_OPTIONS);
container.addEventListener(AUTOFOCUS_ON_UNMOUNT, onUnmountAutoFocus);
container.dispatchEvent(unmountEvent);
if (!unmountEvent.defaultPrevented) {
focus(previouslyFocusedElement ?? document.body, { select: true });
}
container.removeEventListener(AUTOFOCUS_ON_UNMOUNT, onUnmountAutoFocus);
focusScopesStack.remove(focusScope);
}, 0);
};
}
}, [container, onMountAutoFocus, onUnmountAutoFocus, focusScope]);
const handleKeyDown = React.useCallback(
(event) => {
if (!loop && !trapped) return;
if (focusScope.paused) return;
const isTabKey = event.key === "Tab" && !event.altKey && !event.ctrlKey && !event.metaKey;
const focusedElement = document.activeElement;
if (isTabKey && focusedElement) {
const container2 = event.currentTarget;
const [first, last] = getTabbableEdges(container2);
const hasTabbableElementsInside = first && last;
if (!hasTabbableElementsInside) {
if (focusedElement === container2) event.preventDefault();
} else {
if (!event.shiftKey && focusedElement === last) {
event.preventDefault();
if (loop) focus(first, { select: true });
} else if (event.shiftKey && focusedElement === first) {
event.preventDefault();
if (loop) focus(last, { select: true });
}
}
}
},
[loop, trapped, focusScope.paused]
);
return /* @__PURE__ */ jsx(Primitive.div, { tabIndex: -1, ...scopeProps, ref: composedRefs, onKeyDown: handleKeyDown });
});
FocusScope.displayName = FOCUS_SCOPE_NAME;
function focusFirst(candidates, { select = false } = {}) {
const previouslyFocusedElement = document.activeElement;
for (const candidate of candidates) {
focus(candidate, { select });
if (document.activeElement !== previouslyFocusedElement) return;
}
}
function getTabbableEdges(container) {
const candidates = getTabbableCandidates(container);
const first = findVisible(candidates, container);
const last = findVisible(candidates.reverse(), container);
return [first, last];
}
function getTabbableCandidates(container) {
const nodes = [];
const walker = document.createTreeWalker(container, NodeFilter.SHOW_ELEMENT, {
acceptNode: (node) => {
const isHiddenInput = node.tagName === "INPUT" && node.type === "hidden";
if (node.disabled || node.hidden || isHiddenInput) return NodeFilter.FILTER_SKIP;
return node.tabIndex >= 0 ? NodeFilter.FILTER_ACCEPT : NodeFilter.FILTER_SKIP;
}
});
while (walker.nextNode()) nodes.push(walker.currentNode);
return nodes;
}
function findVisible(elements, container) {
for (const element of elements) {
if (!isHidden(element, { upTo: container })) return element;
}
}
function isHidden(node, { upTo }) {
if (getComputedStyle(node).visibility === "hidden") return true;
while (node) {
if (upTo !== void 0 && node === upTo) return false;
if (getComputedStyle(node).display === "none") return true;
node = node.parentElement;
}
return false;
}
function isSelectableInput(element) {
return element instanceof HTMLInputElement && "select" in element;
}
function focus(element, { select = false } = {}) {
if (element && element.focus) {
const previouslyFocusedElement = document.activeElement;
element.focus({ preventScroll: true });
if (element !== previouslyFocusedElement && isSelectableInput(element) && select)
element.select();
}
}
var focusScopesStack = createFocusScopesStack();
function createFocusScopesStack() {
let stack = [];
return {
add(focusScope) {
const activeFocusScope = stack[0];
if (focusScope !== activeFocusScope) {
activeFocusScope?.pause();
}
stack = arrayRemove(stack, focusScope);
stack.unshift(focusScope);
},
remove(focusScope) {
stack = arrayRemove(stack, focusScope);
stack[0]?.resume();
}
};
}
function arrayRemove(array, item) {
const updatedArray = [...array];
const index = updatedArray.indexOf(item);
if (index !== -1) {
updatedArray.splice(index, 1);
}
return updatedArray;
}
function removeLinks(items) {
return items.filter((item) => item.tagName !== "A");
}
var Root = FocusScope;
export {
FocusScope,
Root
};
//# sourceMappingURL=index.mjs.map
|
