FE_exam/public/static/ueditorPlus/third-party/clipboard/clipboard.js

/*!
 * clipboard.js v1.5.15
 * https://zenorocha.github.io/clipboard.js
 *
 * Licensed MIT © Zeno Rocha
 */
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Clipboard = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
    /**
     * A polyfill for Element.matches()
     */
    if (Element && !Element.prototype.matches) {
        var proto = Element.prototype;

        proto.matches = proto.matchesSelector ||
            proto.mozMatchesSelector ||
            proto.msMatchesSelector ||
            proto.oMatchesSelector ||
            proto.webkitMatchesSelector;
    }

    /**
     * Finds the closest parent that matches a selector.
     *
     * @param {Element} element
     * @param {String} selector
     * @return {Function}
     */
    function closest (element, selector) {
        while (element && element !== document) {
            if (element.matches(selector)) return element;
            element = element.parentNode;
        }
    }

    module.exports = closest;

},{}],2:[function(require,module,exports){
    var closest = require('./closest');

    /**
     * Delegates event to a selector.
     *
     * @param {Element} element
     * @param {String} selector
     * @param {String} type
     * @param {Function} callback
     * @param {Boolean} useCapture
     * @return {Object}
     */
    function delegate(element, selector, type, callback, useCapture) {
        var listenerFn = listener.apply(this, arguments);

        element.addEventListener(type, listenerFn, useCapture);

        return {
            destroy: function() {
                element.removeEventListener(type, listenerFn, useCapture);
            }
        }
    }

    /**
     * Finds closest match and invokes callback.
     *
     * @param {Element} element
     * @param {String} selector
     * @param {String} type
     * @param {Function} callback
     * @return {Function}
     */
    function listener(element, selector, type, callback) {
        return function(e) {
            e.delegateTarget = closest(e.target, selector);

            if (e.delegateTarget) {
                callback.call(element, e);
            }
        }
    }

    module.exports = delegate;

},{"./closest":1}],3:[function(require,module,exports){
    /**
     * Check if argument is a HTML element.
     *
     * @param {Object} value
     * @return {Boolean}
     */
    exports.node = function(value) {
        return value !== undefined
            && value instanceof HTMLElement
            && value.nodeType === 1;
    };

    /**
     * Check if argument is a list of HTML elements.
     *
     * @param {Object} value
     * @return {Boolean}
     */
    exports.nodeList = function(value) {
        var type = Object.prototype.toString.call(value);

        return value !== undefined
            && (type === '[object NodeList]' || type === '[object HTMLCollection]')
            && ('length' in value)
            && (value.length === 0 || exports.node(value[0]));
    };

    /**
     * Check if argument is a string.
     *
     * @param {Object} value
     * @return {Boolean}
     */
    exports.string = function(value) {
        return typeof value === 'string'
            || value instanceof String;
    };

    /**
     * Check if argument is a function.
     *
     * @param {Object} value
     * @return {Boolean}
     */
    exports.fn = function(value) {
        var type = Object.prototype.toString.call(value);

        return type === '[object Function]';
    };

},{}],4:[function(require,module,exports){
    var is = require('./is');
    var delegate = require('delegate');

    /**
     * Validates all params and calls the right
     * listener function based on its target type.
     *
     * @param {String|HTMLElement|HTMLCollection|NodeList} target
     * @param {String} type
     * @param {Function} callback
     * @return {Object}
     */
    function listen(target, type, callback) {
        if (!target && !type && !callback) {
            throw new Error('Missing required arguments');
        }

        if (!is.string(type)) {
            throw new TypeError('Second argument must be a String');
        }

        if (!is.fn(callback)) {
            throw new TypeError('Third argument must be a Function');
        }

        if (is.node(target)) {
            return listenNode(target, type, callback);
        }
        else if (is.nodeList(target)) {
            return listenNodeList(target, type, callback);
        }
        else if (is.string(target)) {
            return listenSelector(target, type, callback);
        }
        else {
            throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');
        }
    }

    /**
     * Adds an event listener to a HTML element
     * and returns a remove listener function.
     *
     * @param {HTMLElement} node
     * @param {String} type
     * @param {Function} callback
     * @return {Object}
     */
    function listenNode(node, type, callback) {
        node.addEventListener(type, callback);

        return {
            destroy: function() {
                node.removeEventListener(type, callback);
            }
        }
    }

    /**
     * Add an event listener to a list of HTML elements
     * and returns a remove listener function.
     *
     * @param {NodeList|HTMLCollection} nodeList
     * @param {String} type
     * @param {Function} callback
     * @return {Object}
     */
    function listenNodeList(nodeList, type, callback) {
        Array.prototype.forEach.call(nodeList, function(node) {
            node.addEventListener(type, callback);
        });

        return {
            destroy: function() {
                Array.prototype.forEach.call(nodeList, function(node) {
                    node.removeEventListener(type, callback);
                });
            }
        }
    }

    /**
     * Add an event listener to a selector
     * and returns a remove listener function.
     *
     * @param {String} selector
     * @param {String} type
     * @param {Function} callback
     * @return {Object}
     */
    function listenSelector(selector, type, callback) {
        return delegate(document.body, selector, type, callback);
    }

    module.exports = listen;

},{"./is":3,"delegate":2}],5:[function(require,module,exports){
    function select(element) {
        var selectedText;

        if (element.nodeName === 'SELECT') {
            element.focus();

            selectedText = element.value;
        }
        else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {
            element.focus();
            element.setSelectionRange(0, element.value.length);

            selectedText = element.value;
        }
        else {
            if (element.hasAttribute('contenteditable')) {
                element.focus();
            }

            var selection = window.getSelection();
            var range = document.createRange();

            range.selectNodeContents(element);
            selection.removeAllRanges();
            selection.addRange(range);

            selectedText = selection.toString();
        }

        return selectedText;
    }

    module.exports = select;

},{}],6:[function(require,module,exports){
    function E () {
        // Keep this empty so it's easier to inherit from
        // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)
    }

    E.prototype = {
        on: function (name, callback, ctx) {
            var e = this.e || (this.e = {});

            (e[name] || (e[name] = [])).push({
                fn: callback,
                ctx: ctx
            });

            return this;
        },

        once: function (name, callback, ctx) {
            var self = this;
            function listener () {
                self.off(name, listener);
                callback.apply(ctx, arguments);
            };

            listener._ = callback
            return this.on(name, listener, ctx);
        },

        emit: function (name) {
            var data = [].slice.call(arguments, 1);
            var evtArr = ((this.e || (this.e = {}))[name] || []).slice();
            var i = 0;
            var len = evtArr.length;

            for (i; i < len; i++) {
                evtArr[i].fn.apply(evtArr[i].ctx, data);
            }

            return this;
        },

        off: function (name, callback) {
            var e = this.e || (this.e = {});
            var evts = e[name];
            var liveEvents = [];

            if (evts && callback) {
                for (var i = 0, len = evts.length; i < len; i++) {
                    if (evts[i].fn !== callback && evts[i].fn._ !== callback)
                        liveEvents.push(evts[i]);
                }
            }

            // Remove event from queue to prevent memory leak
            // Suggested by https://github.com/lazd
            // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910

            (liveEvents.length)
                ? e[name] = liveEvents
                : delete e[name];

            return this;
        }
    };

    module.exports = E;

},{}],7:[function(require,module,exports){
    (function (global, factory) {
        if (typeof define === "function" && define.amd) {
            define(['module', 'select'], factory);
        } else if (typeof exports !== "undefined") {
            factory(module, require('select'));
        } else {
            var mod = {
                exports: {}
            };
            factory(mod, global.select);
            global.clipboardAction = mod.exports;
        }
    })(this, function (module, _select) {
        'use strict';

        var _select2 = _interopRequireDefault(_select);

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

        var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
            return typeof obj;
        } : function (obj) {
            return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
        };

        function _classCallCheck(instance, Constructor) {
            if (!(instance instanceof Constructor)) {
                throw new TypeError("Cannot call a class as a function");
            }
        }

        var _createClass = function () {
            function defineProperties(target, props) {
                for (var i = 0; i < props.length; i++) {
                    var descriptor = props[i];
                    descriptor.enumerable = descriptor.enumerable || false;
                    descriptor.configurable = true;
                    if ("value" in descriptor) descriptor.writable = true;
                    Object.defineProperty(target, descriptor.key, descriptor);
                }
            }

            return function (Constructor, protoProps, staticProps) {
                if (protoProps) defineProperties(Constructor.prototype, protoProps);
                if (staticProps) defineProperties(Constructor, staticProps);
                return Constructor;
            };
        }();

        var ClipboardAction = function () {
            /**
             * @param {Object} options
             */
            function ClipboardAction(options) {
                _classCallCheck(this, ClipboardAction);

                this.resolveOptions(options);
                this.initSelection();
            }

            /**
             * Defines base properties passed from constructor.
             * @param {Object} options
             */


            _createClass(ClipboardAction, [{
                key: 'resolveOptions',
                value: function resolveOptions() {
                    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

                    this.action = options.action;
                    this.emitter = options.emitter;
                    this.target = options.target;
                    this.text = options.text;
                    this.trigger = options.trigger;

                    this.selectedText = '';
                }
            }, {
                key: 'initSelection',
                value: function initSelection() {
                    if (this.text) {
                        this.selectFake();
                    } else if (this.target) {
                        this.selectTarget();
                    }
                }
            }, {
                key: 'selectFake',
                value: function selectFake() {
                    var _this = this;

                    var isRTL = document.documentElement.getAttribute('dir') == 'rtl';

                    this.removeFake();

                    this.fakeHandlerCallback = function () {
                        return _this.removeFake();
                    };
                    this.fakeHandler = document.body.addEventListener('click', this.fakeHandlerCallback) || true;

                    this.fakeElem = document.createElement('textarea');
                    // Prevent zooming on iOS
                    this.fakeElem.style.fontSize = '12pt';
                    // Reset box model
                    this.fakeElem.style.border = '0';
                    this.fakeElem.style.padding = '0';
                    this.fakeElem.style.margin = '0';
                    // Move element out of screen horizontally
                    this.fakeElem.style.position = 'absolute';
                    this.fakeElem.style[isRTL ? 'right' : 'left'] = '-9999px';
                    // Move element to the same position vertically
                    var yPosition = window.pageYOffset || document.documentElement.scrollTop;
                    this.fakeElem.addEventListener('focus', window.scrollTo(0, yPosition));
                    this.fakeElem.style.top = yPosition + 'px';

                    this.fakeElem.setAttribute('readonly', '');
                    this.fakeElem.value = this.text;

                    document.body.appendChild(this.fakeElem);

                    this.selectedText = (0, _select2.default)(this.fakeElem);
                    this.copyText();
                }
            }, {
                key: 'removeFake',
                value: function removeFake() {
                    if (this.fakeHandler) {
                        document.body.removeEventListener('click', this.fakeHandlerCallback);
                        this.fakeHandler = null;
                        this.fakeHandlerCallback = null;
                    }

                    if (this.fakeElem) {
                        document.body.removeChild(this.fakeElem);
                        this.fakeElem = null;
                    }
                }
            }, {
                key: 'selectTarget',
                value: function selectTarget() {
                    this.selectedText = (0, _select2.default)(this.target);
                    this.copyText();
                }
            }, {
                key: 'copyText',
                value: function copyText() {
                    var succeeded = void 0;

                    try {
                        succeeded = document.execCommand(this.action);
                    } catch (err) {
                        succeeded = false;
                    }

                    this.handleResult(succeeded);
                }
            }, {
                key: 'handleResult',
                value: function handleResult(succeeded) {
                    this.emitter.emit(succeeded ? 'success' : 'error', {
                        action: this.action,
                        text: this.selectedText,
                        trigger: this.trigger,
                        clearSelection: this.clearSelection.bind(this)
                    });
                }
            }, {
                key: 'clearSelection',
                value: function clearSelection() {
                    if (this.target) {
                        this.target.blur();
                    }

                    window.getSelection().removeAllRanges();
                }
            }, {
                key: 'destroy',
                value: function destroy() {
                    this.removeFake();
                }
            }, {
                key: 'action',
                set: function set() {
                    var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'copy';

                    this._action = action;

                    if (this._action !== 'copy' && this._action !== 'cut') {
                        throw new Error('Invalid "action" value, use either "copy" or "cut"');
                    }
                },
                get: function get() {
                    return this._action;
                }
            }, {
                key: 'target',
                set: function set(target) {
                    if (target !== undefined) {
                        if (target && (typeof target === 'undefined' ? 'undefined' : _typeof(target)) === 'object' && target.nodeType === 1) {
                            if (this.action === 'copy' && target.hasAttribute('disabled')) {
                                throw new Error('Invalid "target" attribute. Please use "readonly" instead of "disabled" attribute');
                            }

                            if (this.action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {
                                throw new Error('Invalid "target" attribute. You can\'t cut text from elements with "readonly" or "disabled" attributes');
                            }

                            this._target = target;
                        } else {
                            throw new Error('Invalid "target" value, use a valid Element');
                        }
                    }
                },
                get: function get() {
                    return this._target;
                }
            }]);

            return ClipboardAction;
        }();

        module.exports = ClipboardAction;
    });

},{"select":5}],8:[function(require,module,exports){
    (function (global, factory) {
        if (typeof define === "function" && define.amd) {
            define(['module', './clipboard-action', 'tiny-emitter', 'good-listener'], factory);
        } else if (typeof exports !== "undefined") {
            factory(module, require('./clipboard-action'), require('tiny-emitter'), require('good-listener'));
        } else {
            var mod = {
                exports: {}
            };
            factory(mod, global.clipboardAction, global.tinyEmitter, global.goodListener);
            global.clipboard = mod.exports;
        }
    })(this, function (module, _clipboardAction, _tinyEmitter, _goodListener) {
        'use strict';

        var _clipboardAction2 = _interopRequireDefault(_clipboardAction);

        var _tinyEmitter2 = _interopRequireDefault(_tinyEmitter);

        var _goodListener2 = _interopRequireDefault(_goodListener);

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

        function _classCallCheck(instance, Constructor) {
            if (!(instance instanceof Constructor)) {
                throw new TypeError("Cannot call a class as a function");
            }
        }

        var _createClass = function () {
            function defineProperties(target, props) {
                for (var i = 0; i < props.length; i++) {
                    var descriptor = props[i];
                    descriptor.enumerable = descriptor.enumerable || false;
                    descriptor.configurable = true;
                    if ("value" in descriptor) descriptor.writable = true;
                    Object.defineProperty(target, descriptor.key, descriptor);
                }
            }

            return function (Constructor, protoProps, staticProps) {
                if (protoProps) defineProperties(Constructor.prototype, protoProps);
                if (staticProps) defineProperties(Constructor, staticProps);
                return Constructor;
            };
        }();

        function _possibleConstructorReturn(self, call) {
            if (!self) {
                throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
            }

            return call && (typeof call === "object" || typeof call === "function") ? call : self;
        }

        function _inherits(subClass, superClass) {
            if (typeof superClass !== "function" && superClass !== null) {
                throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
            }

            subClass.prototype = Object.create(superClass && superClass.prototype, {
                constructor: {
                    value: subClass,
                    enumerable: false,
                    writable: true,
                    configurable: true
                }
            });
            if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
        }

        var Clipboard = function (_Emitter) {
            _inherits(Clipboard, _Emitter);

            /**
             * @param {String|HTMLElement|HTMLCollection|NodeList} trigger
             * @param {Object} options
             */
            function Clipboard(trigger, options) {
                _classCallCheck(this, Clipboard);

                var _this = _possibleConstructorReturn(this, (Clipboard.__proto__ || Object.getPrototypeOf(Clipboard)).call(this));

                _this.resolveOptions(options);
                _this.listenClick(trigger);
                return _this;
            }

            /**
             * Defines if attributes would be resolved using internal setter functions
             * or custom functions that were passed in the constructor.
             * @param {Object} options
             */


            _createClass(Clipboard, [{
                key: 'resolveOptions',
                value: function resolveOptions() {
                    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

                    this.action = typeof options.action === 'function' ? options.action : this.defaultAction;
                    this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;
                    this.text = typeof options.text === 'function' ? options.text : this.defaultText;
                }
            }, {
                key: 'listenClick',
                value: function listenClick(trigger) {
                    var _this2 = this;

                    this.listener = (0, _goodListener2.default)(trigger, 'click', function (e) {
                        return _this2.onClick(e);
                    });
                }
            }, {
                key: 'onClick',
                value: function onClick(e) {
                    var trigger = e.delegateTarget || e.currentTarget;

                    if (this.clipboardAction) {
                        this.clipboardAction = null;
                    }

                    this.clipboardAction = new _clipboardAction2.default({
                        action: this.action(trigger),
                        target: this.target(trigger),
                        text: this.text(trigger),
                        trigger: trigger,
                        emitter: this
                    });
                }
            }, {
                key: 'defaultAction',
                value: function defaultAction(trigger) {
                    return getAttributeValue('action', trigger);
                }
            }, {
                key: 'defaultTarget',
                value: function defaultTarget(trigger) {
                    var selector = getAttributeValue('target', trigger);

                    if (selector) {
                        return document.querySelector(selector);
                    }
                }
            }, {
                key: 'defaultText',
                value: function defaultText(trigger) {
                    return getAttributeValue('text', trigger);
                }
            }, {
                key: 'destroy',
                value: function destroy() {
                    this.listener.destroy();

                    if (this.clipboardAction) {
                        this.clipboardAction.destroy();
                        this.clipboardAction = null;
                    }
                }
            }]);

            return Clipboard;
        }(_tinyEmitter2.default);

        /**
         * Helper function to retrieve attribute value.
         * @param {String} suffix
         * @param {Element} element
         */
        function getAttributeValue(suffix, element) {
            var attribute = 'data-clipboard-' + suffix;

            if (!element.hasAttribute(attribute)) {
                return;
            }

            return element.getAttribute(attribute);
        }

        module.exports = Clipboard;
    });

},{"./clipboard-action":7,"good-listener":4,"tiny-emitter":6}]},{},[8])(8)
});