office-ui-fabric-react
Version:
Reusable React components for building experiences for Office 365.
133 lines (131 loc) • 6.14 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var React = require("react");
var Utilities_1 = require("../../Utilities");
var FocusTrapZone = (function (_super) {
tslib_1.__extends(FocusTrapZone, _super);
function FocusTrapZone() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this._isInFocusStack = false;
_this._isInClickStack = false;
return _this;
}
FocusTrapZone.prototype.componentWillMount = function () {
var _a = this.props, _b = _a.isClickableOutsideFocusTrap, isClickableOutsideFocusTrap = _b === void 0 ? false : _b, _c = _a.forceFocusInsideTrap, forceFocusInsideTrap = _c === void 0 ? true : _c;
if (forceFocusInsideTrap) {
this._isInFocusStack = true;
FocusTrapZone._focusStack.push(this);
}
if (!isClickableOutsideFocusTrap) {
this._isInClickStack = true;
FocusTrapZone._clickStack.push(this);
}
};
FocusTrapZone.prototype.componentDidMount = function () {
var _a = this.props, _b = _a.isClickableOutsideFocusTrap, isClickableOutsideFocusTrap = _b === void 0 ? false : _b, _c = _a.forceFocusInsideTrap, forceFocusInsideTrap = _c === void 0 ? true : _c, elementToFocusOnDismiss = _a.elementToFocusOnDismiss;
this._previouslyFocusedElement = elementToFocusOnDismiss ? elementToFocusOnDismiss : document.activeElement;
if (!Utilities_1.elementContains(this.refs.root, this._previouslyFocusedElement)) {
this.focus();
}
if (forceFocusInsideTrap) {
this._events.on(window, 'focus', this._forceFocusInTrap, true);
}
if (!isClickableOutsideFocusTrap) {
this._events.on(window, 'click', this._forceClickInTrap, true);
}
};
FocusTrapZone.prototype.componentWillReceiveProps = function (nextProps) {
var elementToFocusOnDismiss = nextProps.elementToFocusOnDismiss;
if (elementToFocusOnDismiss && this._previouslyFocusedElement !== elementToFocusOnDismiss) {
this._previouslyFocusedElement = elementToFocusOnDismiss;
}
};
FocusTrapZone.prototype.componentWillUnmount = function () {
var _this = this;
var ignoreExternalFocusing = this.props.ignoreExternalFocusing;
this._events.dispose();
if (this._isInFocusStack || this._isInClickStack) {
var filter = function (value) {
return _this !== value;
};
if (this._isInFocusStack) {
FocusTrapZone._focusStack = FocusTrapZone._focusStack.filter(filter);
}
if (this._isInClickStack) {
FocusTrapZone._clickStack = FocusTrapZone._clickStack.filter(filter);
}
}
if (!ignoreExternalFocusing && this._previouslyFocusedElement && typeof this._previouslyFocusedElement.focus === 'function') {
this._previouslyFocusedElement.focus();
}
};
FocusTrapZone.prototype.render = function () {
var _a = this.props, className = _a.className, ariaLabelledBy = _a.ariaLabelledBy;
var divProps = Utilities_1.getNativeProps(this.props, Utilities_1.divProperties);
return (React.createElement("div", tslib_1.__assign({}, divProps, { className: className, ref: 'root', "aria-labelledby": ariaLabelledBy, onKeyDown: this._onKeyboardHandler }), this.props.children));
};
/**
* Need to expose this method in case of popups since focus needs to be set when popup is opened
*/
FocusTrapZone.prototype.focus = function () {
var firstFocusableSelector = this.props.firstFocusableSelector;
var _firstFocusableChild;
var root = this.refs.root;
if (firstFocusableSelector) {
_firstFocusableChild = root.querySelector('.' + firstFocusableSelector);
}
else {
_firstFocusableChild = Utilities_1.getNextElement(root, root.firstChild, true, false, false, true);
}
if (_firstFocusableChild) {
_firstFocusableChild.focus();
}
};
FocusTrapZone.prototype._onKeyboardHandler = function (ev) {
if (ev.which !== 9 /* tab */) {
return;
}
var root = this.refs.root;
var _firstFocusableChild = Utilities_1.getFirstFocusable(root, root.firstChild, true);
var _lastFocusableChild = Utilities_1.getLastFocusable(root, root.lastChild, true);
if (ev.shiftKey && _firstFocusableChild === ev.target) {
_lastFocusableChild.focus();
ev.preventDefault();
ev.stopPropagation();
}
else if (!ev.shiftKey && _lastFocusableChild === ev.target) {
_firstFocusableChild.focus();
ev.preventDefault();
ev.stopPropagation();
}
};
FocusTrapZone.prototype._forceFocusInTrap = function (ev) {
if (FocusTrapZone._focusStack.length && this === FocusTrapZone._focusStack[FocusTrapZone._focusStack.length - 1]) {
var focusedElement = document.activeElement;
if (!Utilities_1.elementContains(this.refs.root, focusedElement)) {
this.focus();
ev.preventDefault();
ev.stopPropagation();
}
}
};
FocusTrapZone.prototype._forceClickInTrap = function (ev) {
if (FocusTrapZone._clickStack.length && this === FocusTrapZone._clickStack[FocusTrapZone._clickStack.length - 1]) {
var clickedElement = ev.target;
if (clickedElement && !Utilities_1.elementContains(this.refs.root, clickedElement)) {
this.focus();
ev.preventDefault();
ev.stopPropagation();
}
}
};
return FocusTrapZone;
}(Utilities_1.BaseComponent));
FocusTrapZone._focusStack = [];
FocusTrapZone._clickStack = [];
tslib_1.__decorate([
Utilities_1.autobind
], FocusTrapZone.prototype, "_onKeyboardHandler", null);
exports.FocusTrapZone = FocusTrapZone;
//# sourceMappingURL=FocusTrapZone.js.map