Release v1.6.1

Thanks to @geraldarthur at #369

.babelrc

@@ -1,4 +1,4 @@
 {
-  "presets": ["es2015-loose"],
+  "presets": ["es2015"],
   "plugins": ["transform-es2015-modules-umd"]
 }

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "clipboard",
-  "version": "1.5.13",
+  "version": "1.6.1",
   "description": "Modern copy to clipboard. No Flash. Just 2kb",
   "license": "MIT",
   "main": "dist/clipboard.js",

dist/clipboard.js

@@ -1,124 +1,43 @@
 /*!
- * clipboard.js v1.5.13
+ * clipboard.js v1.6.1
  * 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){
-/**
- * Module Dependencies
- */
+var DOCUMENT_NODE_TYPE = 9;
 
-try {
-  var matches = require('matches-selector')
-} catch (err) {
-  var matches = require('component-matches-selector')
+/**
+ * A polyfill for Element.matches()
+ */
+if (typeof Element !== 'undefined' && !Element.prototype.matches) {
+    var proto = Element.prototype;
+
+    proto.matches = proto.matchesSelector ||
+                    proto.mozMatchesSelector ||
+                    proto.msMatchesSelector ||
+                    proto.oMatchesSelector ||
+                    proto.webkitMatchesSelector;
 }
 
 /**
- * Export `closest`
- */
-
-module.exports = closest
-
-/**
- * Closest
+ * Finds the closest parent that matches a selector.
  *
- * @param {Element} el
+ * @param {Element} element
  * @param {String} selector
- * @param {Element} scope (optional)
+ * @return {Function}
  */
-
-function closest (el, selector, scope) {
-  scope = scope || document.documentElement;
-
-  // walk up the dom
-  while (el && el !== scope) {
-    if (matches(el, selector)) return el;
-    el = el.parentNode;
-  }
-
-  // check scope for match
-  return matches(el, selector) ? el : null;
+function closest (element, selector) {
+    while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {
+        if (element.matches(selector)) return element;
+        element = element.parentNode;
+    }
 }
 
-},{"component-matches-selector":2,"matches-selector":2}],2:[function(require,module,exports){
-/**
- * Module dependencies.
- */
+module.exports = closest;
 
-try {
-  var query = require('query');
-} catch (err) {
-  var query = require('component-query');
-}
-
-/**
- * Element prototype.
- */
-
-var proto = Element.prototype;
-
-/**
- * Vendor function.
- */
-
-var vendor = proto.matches
-  || proto.webkitMatchesSelector
-  || proto.mozMatchesSelector
-  || proto.msMatchesSelector
-  || proto.oMatchesSelector;
-
-/**
- * Expose `match()`.
- */
-
-module.exports = match;
-
-/**
- * Match `el` to `selector`.
- *
- * @param {Element} el
- * @param {String} selector
- * @return {Boolean}
- * @api public
- */
-
-function match(el, selector) {
-  if (!el || el.nodeType !== 1) return false;
-  if (vendor) return vendor.call(el, selector);
-  var nodes = query.all(selector, el.parentNode);
-  for (var i = 0; i < nodes.length; ++i) {
-    if (nodes[i] == el) return true;
-  }
-  return false;
-}
-
-},{"component-query":3,"query":3}],3:[function(require,module,exports){
-function one(selector, el) {
-  return el.querySelector(selector);
-}
-
-exports = module.exports = function(selector, el){
-  el = el || document;
-  return one(selector, el);
-};
-
-exports.all = function(selector, el){
-  el = el || document;
-  return el.querySelectorAll(selector);
-};
-
-exports.engine = function(obj){
-  if (!obj.one) throw new Error('.one callback required');
-  if (!obj.all) throw new Error('.all callback required');
-  one = obj.one;
-  exports.all = obj.all;
-  return exports;
-};
-
-},{}],4:[function(require,module,exports){
-var closest = require('component-closest');
+},{}],2:[function(require,module,exports){
+var closest = require('./closest');
 
 /**
  * Delegates event to a selector.
@@ -153,7 +72,7 @@ function delegate(element, selector, type, callback, useCapture) {
  */
 function listener(element, selector, type, callback) {
     return function(e) {
-        e.delegateTarget = closest(e.target, selector, true);
+        e.delegateTarget = closest(e.target, selector);
 
         if (e.delegateTarget) {
             callback.call(element, e);
@@ -163,7 +82,7 @@ function listener(element, selector, type, callback) {
 
 module.exports = delegate;
 
-},{"component-closest":1}],5:[function(require,module,exports){
+},{"./closest":1}],3:[function(require,module,exports){
 /**
  * Check if argument is a HTML element.
  *
@@ -214,7 +133,7 @@ exports.fn = function(value) {
     return type === '[object Function]';
 };
 
-},{}],6:[function(require,module,exports){
+},{}],4:[function(require,module,exports){
 var is = require('./is');
 var delegate = require('delegate');
 
@@ -311,7 +230,7 @@ function listenSelector(selector, type, callback) {
 
 module.exports = listen;
 
-},{"./is":5,"delegate":4}],7:[function(require,module,exports){
+},{"./is":3,"delegate":2}],5:[function(require,module,exports){
 function select(element) {
     var selectedText;
 
@@ -321,9 +240,19 @@ function select(element) {
         selectedText = element.value;
     }
     else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {
-        element.focus();
+        var isReadOnly = element.hasAttribute('readonly');
+
+        if (!isReadOnly) {
+            element.setAttribute('readonly', '');
+        }
+
+        element.select();
         element.setSelectionRange(0, element.value.length);
 
+        if (!isReadOnly) {
+            element.removeAttribute('readonly');
+        }
+
         selectedText = element.value;
     }
     else {
@@ -346,7 +275,7 @@ function select(element) {
 
 module.exports = select;
 
-},{}],8:[function(require,module,exports){
+},{}],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)
@@ -414,7 +343,7 @@ E.prototype = {
 
 module.exports = E;
 
-},{}],9:[function(require,module,exports){
+},{}],7:[function(require,module,exports){
 (function (global, factory) {
     if (typeof define === "function" && define.amd) {
         define(['module', 'select'], factory);
@@ -441,7 +370,7 @@ module.exports = E;
     var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
         return typeof obj;
     } : function (obj) {
-        return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj;
+        return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
     };
 
     function _classCallCheck(instance, Constructor) {
@@ -485,117 +414,125 @@ module.exports = E;
          */
 
 
-        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 = '';
-        };
-
-        ClipboardAction.prototype.initSelection = function initSelection() {
-            if (this.text) {
-                this.selectFake();
-            } else if (this.target) {
-                this.selectTarget();
-            }
-        };
-
-        ClipboardAction.prototype.selectFake = 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();
-        };
-
-        ClipboardAction.prototype.removeFake = 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;
-            }
-        };
-
-        ClipboardAction.prototype.selectTarget = function selectTarget() {
-            this.selectedText = (0, _select2.default)(this.target);
-            this.copyText();
-        };
-
-        ClipboardAction.prototype.copyText = function copyText() {
-            var succeeded = void 0;
-
-            try {
-                succeeded = document.execCommand(this.action);
-            } catch (err) {
-                succeeded = false;
-            }
-
-            this.handleResult(succeeded);
-        };
-
-        ClipboardAction.prototype.handleResult = function handleResult(succeeded) {
-            this.emitter.emit(succeeded ? 'success' : 'error', {
-                action: this.action,
-                text: this.selectedText,
-                trigger: this.trigger,
-                clearSelection: this.clearSelection.bind(this)
-            });
-        };
-
-        ClipboardAction.prototype.clearSelection = function clearSelection() {
-            if (this.target) {
-                this.target.blur();
-            }
-
-            window.getSelection().removeAllRanges();
-        };
-
-        ClipboardAction.prototype.destroy = function destroy() {
-            this.removeFake();
-        };
-
         _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.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 ? 'copy' : arguments[0];
+                var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'copy';
 
                 this._action = action;
 
@@ -636,7 +573,7 @@ module.exports = E;
     module.exports = ClipboardAction;
 });
 
-},{"select":7}],10:[function(require,module,exports){
+},{"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);
@@ -670,6 +607,24 @@ module.exports = E;
         }
     }
 
+    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");
@@ -704,7 +659,7 @@ module.exports = E;
         function Clipboard(trigger, options) {
             _classCallCheck(this, Clipboard);
 
-            var _this = _possibleConstructorReturn(this, _Emitter.call(this));
+            var _this = _possibleConstructorReturn(this, (Clipboard.__proto__ || Object.getPrototypeOf(Clipboard)).call(this));
 
             _this.resolveOptions(options);
             _this.listenClick(trigger);
@@ -718,62 +673,85 @@ module.exports = E;
          */
 
 
-        Clipboard.prototype.resolveOptions = function resolveOptions() {
-            var options = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];
+        _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;
-        };
-
-        Clipboard.prototype.listenClick = function listenClick(trigger) {
-            var _this2 = this;
-
-            this.listener = (0, _goodListener2.default)(trigger, 'click', function (e) {
-                return _this2.onClick(e);
-            });
-        };
-
-        Clipboard.prototype.onClick = function onClick(e) {
-            var trigger = e.delegateTarget || e.currentTarget;
-
-            if (this.clipboardAction) {
-                this.clipboardAction = null;
+                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.clipboardAction = new _clipboardAction2.default({
-                action: this.action(trigger),
-                target: this.target(trigger),
-                text: this.text(trigger),
-                trigger: trigger,
-                emitter: this
-            });
-        };
-
-        Clipboard.prototype.defaultAction = function defaultAction(trigger) {
-            return getAttributeValue('action', trigger);
-        };
-
-        Clipboard.prototype.defaultTarget = function defaultTarget(trigger) {
-            var selector = getAttributeValue('target', trigger);
-
-            if (selector) {
-                return document.querySelector(selector);
+                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;
 
-        Clipboard.prototype.defaultText = function defaultText(trigger) {
-            return getAttributeValue('text', trigger);
-        };
+                if (this.clipboardAction) {
+                    this.clipboardAction = null;
+                }
 
-        Clipboard.prototype.destroy = function destroy() {
-            this.listener.destroy();
-
-            if (this.clipboardAction) {
-                this.clipboardAction.destroy();
-                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;
+                }
+            }
+        }], [{
+            key: 'isSupported',
+            value: function isSupported() {
+                var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];
+
+                var actions = typeof action === 'string' ? [action] : action;
+                var support = !!document.queryCommandSupported;
+
+                actions.forEach(function (action) {
+                    support = support && !!document.queryCommandSupported(action);
+                });
+
+                return support;
+            }
+        }]);
 
         return Clipboard;
     }(_tinyEmitter2.default);
@@ -796,5 +774,5 @@ module.exports = E;
     module.exports = Clipboard;
 });
 
-},{"./clipboard-action":9,"good-listener":6,"tiny-emitter":8}]},{},[10])(10)
+},{"./clipboard-action":7,"good-listener":4,"tiny-emitter":6}]},{},[8])(8)
 });

package.js

@@ -3,7 +3,7 @@
 Package.describe({
   name: "zenorocha:clipboard",
   summary: "Modern copy to clipboard. No Flash. Just 2kb.",
-  version: "1.5.13",
+  version: "1.6.1",
   git: "https://github.com/zenorocha/clipboard.js"
 });
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "clipboard",
-  "version": "1.5.13",
+  "version": "1.6.1",
   "description": "Modern copy to clipboard. No Flash. Just 2kb",
   "repository": "zenorocha/clipboard.js",
   "license": "MIT",
@@ -11,8 +11,8 @@
     "cut"
   ],
   "dependencies": {
-    "good-listener": "^1.1.6",
-    "select": "^1.0.6",
+    "good-listener": "^1.2.0",
+    "select": "^1.1.2",
     "tiny-emitter": "^1.0.0"
   },
   "devDependencies": {
@@ -20,19 +20,18 @@
     "babel-core": "^6.5.2",
     "babel-plugin-transform-es2015-modules-umd": "^6.5.0",
     "babel-preset-es2015": "^6.5.0",
-    "babel-preset-es2015-loose": "^7.0.0",
     "babelify": "^7.2.0",
     "bannerify": "Vekat/bannerify#feature-option",
     "browserify": "^13.0.0",
     "chai": "^3.4.1",
-    "install": "^0.4.4",
-    "karma": "^0.13.10",
+    "install": "^0.8.1",
+    "karma": "^1.3.0",
     "karma-browserify": "^5.0.1",
     "karma-chai": "^0.1.0",
-    "karma-mocha": "^0.2.0",
+    "karma-mocha": "^1.2.0",
     "karma-phantomjs-launcher": "^1.0.0",
     "karma-sinon": "^1.0.4",
-    "mocha": "^2.3.3",
+    "mocha": "^3.1.2",
     "phantomjs-prebuilt": "^2.1.4",
     "sinon": "^1.17.2",
     "uglify-js": "^2.4.24",
@@ -44,6 +43,6 @@
     "build-min": "uglifyjs dist/clipboard.js --comments '/!/' -m screw_ie8=true -c screw_ie8=true,unused=false -o dist/clipboard.min.js",
     "build-watch": "watchify src/clipboard.js -s Clipboard -t [babelify] -o dist/clipboard.js -v",
     "test": "karma start --single-run",
-    "prepublish": "babel src --out-dir lib --loose all"
+    "prepublish": "babel src --out-dir lib"
   }
 }

readme.md

@@ -168,6 +168,8 @@ This library relies on both [Selection](https://developer.mozilla.org/en-US/docs
 
 The good news is that clipboard.js gracefully degrades if you need to support older browsers. All you have to do is show a tooltip saying `Copied!` when `success` event is called and `Press Ctrl+C to copy` when `error` event is called because the text is already selected.
 
+You can also check if clipboard.js is supported or not by running `Clipboard.isSupported()`, that way you can hide copy/cut buttons from the UI.
+
 ## License
 
 [MIT License](http://zenorocha.mit-license.org/) © Zeno Rocha

src/clipboard-action.js

@@ -64,7 +64,6 @@ class ClipboardAction {
         this.fakeElem.style[ isRTL ? 'right' : 'left' ] = '-9999px';
         // Move element to the same position vertically
         let yPosition = window.pageYOffset || document.documentElement.scrollTop;
-        this.fakeElem.addEventListener('focus', window.scrollTo(0, yPosition));
         this.fakeElem.style.top = yPosition + 'px';
 
         this.fakeElem.setAttribute('readonly', '');

src/clipboard.js

@@ -77,6 +77,22 @@ class Clipboard extends Emitter {
         }
     }
 
+    /**
+     * Returns the support of the given action, or all actions if no action is
+     * given.
+     * @param {String} [action]
+     */
+    static isSupported(action = ['copy', 'cut']) {
+        const actions = (typeof action === 'string') ? [action] : action;
+        let support = !!document.queryCommandSupported;
+
+        actions.forEach((action) => {
+            support = support && !!document.queryCommandSupported(action);
+        });
+
+        return support;
+    }
+
     /**
      * Default `text` lookup function.
      * @param {Element} trigger

test/clipboard.js

@@ -94,6 +94,17 @@ describe('Clipboard', () => {
         });
     });
 
+    describe('#static isSupported', () => {
+        it('should return the support of the given action', () => {
+            assert.equal(Clipboard.isSupported('copy'), false);
+            assert.equal(Clipboard.isSupported('cut'), false);
+        });
+
+        it('should return the support of the cut and copy actions', () => {
+            assert.equal(Clipboard.isSupported(), false);
+        });
+    });
+
     describe('#destroy', () => {
         it('should destroy an existing instance of ClipboardAction', () => {
             let clipboard = new Clipboard('.btn');