next-csrf/example/node_modules/ally.js/amd/fix/pointer-focus-input.js

CSRF mitigation library for Next.js

(/* istanbul ignore next */ function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(['module', 'exports', '../get/focus-target', '../util/decorate-context', '../util/element-matches', '../util/platform'], factory);
  } else if (typeof exports !== "undefined") {
    factory(module, exports, require('../get/focus-target'), require('../util/decorate-context'), require('../util/element-matches'), require('../util/platform'));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod, mod.exports, global.focusTarget, global.decorateContext, global.elementMatches, global.platform);
    global.pointerFocusInput = mod.exports;
  }
})(this, function (module, exports, _focusTarget, _decorateContext, _elementMatches, _platform) {
  'use strict';

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _focusTarget2 = _interopRequireDefault(_focusTarget);

  var _decorateContext2 = _interopRequireDefault(_decorateContext);

  var _elementMatches2 = _interopRequireDefault(_elementMatches);

  var _platform2 = _interopRequireDefault(_platform);

  function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
      default: obj
    };
  }

  /*
    Clicking on form field does not necessarily assign it focus in Safari and Firefox on Mac OS X.
    While not a browser bug, it may be considered undesired behavior.
  
    https://bugs.webkit.org/show_bug.cgi?id=22261
    https://bugs.webkit.org/show_bug.cgi?id=118043
  
    Note: This behavior can be turned off in Firefox by changing the
    option `accessibility.mouse_focuses_formcontrol` in about:config
  */

  var engage = void 0;
  var disengage = void 0;
  // This fix is only relevant to Safari and Firefox on OSX
  var relevantToCurrentBrowser = _platform2.default.is.OSX && (_platform2.default.is.GECKO || _platform2.default.is.WEBKIT);

  if (!relevantToCurrentBrowser) {
    engage = function engage() {};
  } else {
    (function () {
      var handleMouseDownEvent = function handleMouseDownEvent(event) {
        if (event.defaultPrevented || !(0, _elementMatches2.default)(event.target, 'input, button, button *')) {
          // abort if the mousedown event was cancelled,
          // or we're not dealing with an affected form control
          return;
        }

        var target = (0, _focusTarget2.default)({
          context: event.target
        });

        // we need to set focus AFTER the mousedown finished, otherwise WebKit will ignore the call
        (window.setImmediate || window.setTimeout)(function () {
          target.focus();
        });
      };

      var handleMouseUpEvent = function handleMouseUpEvent(event) {
        if (event.defaultPrevented || !(0, _elementMatches2.default)(event.target, 'label, label *')) {
          // abort if the mouseup event was cancelled,
          // or we're not dealing with a <label>
          return;
        }

        var target = (0, _focusTarget2.default)({
          context: event.target
        });

        if (!target) {
          return;
        }

        target.focus();
      };

      engage = function engage(element) {
        element.addEventListener('mousedown', handleMouseDownEvent, false);
        // <label> elements redirect focus upon mouseup, not mousedown
        element.addEventListener('mouseup', handleMouseUpEvent, false);
      };

      disengage = function disengage(element) {
        element.removeEventListener('mousedown', handleMouseDownEvent, false);
        element.removeEventListener('mouseup', handleMouseUpEvent, false);
      };
    })();
  }

  exports.default = (0, _decorateContext2.default)({ engage: engage, disengage: disengage });
  module.exports = exports['default'];
});
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