distribute transpiled source

dist/transpiled/clipboard-action.js

@@ -0,0 +1,237 @@
+/**
+ * Inner class which performs selection from either `text` or `target`
+ * properties and then executes copy or cut operations.
+ */
+'use strict';
+
+exports.__esModule = true;
+
+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 _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
+
+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
+     */
+
+    ClipboardAction.prototype.resolveOptions = 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 = '';
+    };
+
+    /**
+     * Decides which selection strategy is going to be applied based
+     * on the existence of `text` and `target` properties.
+     */
+
+    ClipboardAction.prototype.initSelection = function initSelection() {
+        if (this.text && this.target) {
+            throw new Error('Multiple attributes declared, use either "target" or "text"');
+        } else if (this.text) {
+            this.selectFake();
+        } else if (this.target) {
+            this.selectTarget();
+        } else {
+            throw new Error('Missing required attributes, use either "target" or "text"');
+        }
+    };
+
+    /**
+     * Creates a fake textarea element, sets its value from `text` property,
+     * and makes a selection on it.
+     */
+
+    ClipboardAction.prototype.selectFake = function selectFake() {
+        var _this = this;
+
+        this.removeFake();
+
+        this.fakeHandler = document.body.addEventListener('click', function () {
+            return _this.removeFake();
+        });
+
+        this.fakeElem = document.createElement('textarea');
+        this.fakeElem.style.position = 'absolute';
+        this.fakeElem.style.left = '-9999px';
+        this.fakeElem.style.top = document.body.scrollTop + 'px';
+        this.fakeElem.setAttribute('readonly', '');
+        this.fakeElem.value = this.text;
+        this.selectedText = this.text;
+
+        document.body.appendChild(this.fakeElem);
+
+        this.fakeElem.select();
+        this.copyText();
+    };
+
+    /**
+     * Only removes the fake element after another click event, that way
+     * an user can hit `Ctrl+C` to copy because selection still exists.
+     */
+
+    ClipboardAction.prototype.removeFake = function removeFake() {
+        if (this.fakeHandler) {
+            document.body.removeEventListener('click');
+            this.fakeHandler = null;
+        }
+
+        if (this.fakeElem) {
+            document.body.removeChild(this.fakeElem);
+            this.fakeElem = null;
+        }
+    };
+
+    /**
+     * Selects the content from element passed on `target` property.
+     */
+
+    ClipboardAction.prototype.selectTarget = function selectTarget() {
+        if (this.target.nodeName === 'INPUT' || this.target.nodeName === 'TEXTAREA') {
+            this.target.select();
+            this.selectedText = this.target.value;
+        } else {
+            var range = document.createRange();
+            var selection = window.getSelection();
+
+            range.selectNodeContents(this.target);
+            selection.addRange(range);
+            this.selectedText = selection.toString();
+        }
+
+        this.copyText();
+    };
+
+    /**
+     * Executes the copy operation based on the current selection.
+     */
+
+    ClipboardAction.prototype.copyText = function copyText() {
+        var succeeded = undefined;
+
+        try {
+            succeeded = document.execCommand(this.action);
+        } catch (err) {
+            succeeded = false;
+        }
+
+        this.handleResult(succeeded);
+    };
+
+    /**
+     * Fires an event based on the copy operation result.
+     * @param {Boolean} succeeded
+     */
+
+    ClipboardAction.prototype.handleResult = function handleResult(succeeded) {
+        if (succeeded) {
+            this.emitter.emit('success', {
+                action: this.action,
+                text: this.selectedText,
+                trigger: this.trigger,
+                clearSelection: this.clearSelection.bind(this)
+            });
+        } else {
+            this.emitter.emit('error', {
+                action: this.action,
+                trigger: this.trigger,
+                clearSelection: this.clearSelection.bind(this)
+            });
+        }
+    };
+
+    /**
+     * Removes current selection and focus from `target` element.
+     */
+
+    ClipboardAction.prototype.clearSelection = function clearSelection() {
+        if (this.target) {
+            this.target.blur();
+        }
+
+        window.getSelection().removeAllRanges();
+    };
+
+    /**
+     * Sets the `action` to be performed which can be either 'copy' or 'cut'.
+     * @param {String} action
+     */
+
+    /**
+     * Destroy lifecycle.
+     */
+
+    ClipboardAction.prototype.destroy = function destroy() {
+        this.removeFake();
+    };
+
+    _createClass(ClipboardAction, [{
+        key: 'action',
+        set: function set() {
+            var action = arguments.length <= 0 || arguments[0] === undefined ? 'copy' : arguments[0];
+
+            this._action = action;
+
+            if (this._action !== 'copy' && this._action !== 'cut') {
+                throw new Error('Invalid "action" value, use either "copy" or "cut"');
+            }
+        },
+
+        /**
+         * Gets the `action` property.
+         * @return {String}
+         */
+        get: function get() {
+            return this._action;
+        }
+
+        /**
+         * Sets the `target` property using an element
+         * that will be have its content copied.
+         * @param {Element} target
+         */
+    }, {
+        key: 'target',
+        set: function set(target) {
+            if (target !== undefined) {
+                if (target && typeof target === 'object' && target.nodeType === 1) {
+                    this._target = target;
+                } else {
+                    throw new Error('Invalid "target" value, use a valid Element');
+                }
+            }
+        },
+
+        /**
+         * Gets the `target` property.
+         * @return {String|HTMLElement}
+         */
+        get: function get() {
+            return this._target;
+        }
+    }]);
+
+    return ClipboardAction;
+})();
+
+exports['default'] = ClipboardAction;
+module.exports = exports['default'];