Container option (#368)

* Allow container option to fix bugs related to bootstrap modals etc.

* Updated readme to reflect addition of container option

* Name link

* Removed test log

* Remove unwanted whitespace

* Refactored description

dist/clipboard.js

@@ -10,7 +10,7 @@ var DOCUMENT_NODE_TYPE = 9;
 /**
  * A polyfill for Element.matches()
  */
-if (typeof Element !== 'undefined' && !Element.prototype.matches) {
+if (Element && !Element.prototype.matches) {
     var proto = Element.prototype;
 
     proto.matches = proto.matchesSelector ||
@@ -420,6 +420,7 @@ module.exports = E;
                 var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
 
                 this.action = options.action;
+                this.container = options.container;
                 this.emitter = options.emitter;
                 this.target = options.target;
                 this.text = options.text;
@@ -448,7 +449,7 @@ module.exports = E;
                 this.fakeHandlerCallback = function () {
                     return _this.removeFake();
                 };
-                this.fakeHandler = document.body.addEventListener('click', this.fakeHandlerCallback) || true;
+                this.fakeHandler = this.container.addEventListener('click', this.fakeHandlerCallback) || true;
 
                 this.fakeElem = document.createElement('textarea');
                 // Prevent zooming on iOS
@@ -467,7 +468,7 @@ module.exports = E;
                 this.fakeElem.setAttribute('readonly', '');
                 this.fakeElem.value = this.text;
 
-                document.body.appendChild(this.fakeElem);
+                this.container.appendChild(this.fakeElem);
 
                 this.selectedText = (0, _select2.default)(this.fakeElem);
                 this.copyText();
@@ -476,13 +477,13 @@ module.exports = E;
             key: 'removeFake',
             value: function removeFake() {
                 if (this.fakeHandler) {
-                    document.body.removeEventListener('click', this.fakeHandlerCallback);
+                    this.container.removeEventListener('click', this.fakeHandlerCallback);
                     this.fakeHandler = null;
                     this.fakeHandlerCallback = null;
                 }
 
                 if (this.fakeElem) {
-                    document.body.removeChild(this.fakeElem);
+                    this.container.removeChild(this.fakeElem);
                     this.fakeElem = null;
                 }
             }
@@ -601,6 +602,12 @@ 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 && obj !== Symbol.prototype ? "symbol" : typeof obj;
+    };
+
     function _classCallCheck(instance, Constructor) {
         if (!(instance instanceof Constructor)) {
             throw new TypeError("Cannot call a class as a function");
@@ -681,6 +688,7 @@ module.exports = E;
                 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;
+                this.container = _typeof(options.container) === 'object' ? options.container : document.body;
             }
         }, {
             key: 'listenClick',
@@ -704,6 +712,7 @@ module.exports = E;
                     action: this.action(trigger),
                     target: this.target(trigger),
                     text: this.text(trigger),
+                    container: this.container,
                     trigger: trigger,
                     emitter: this
                 });

readme.md

@@ -145,6 +145,15 @@ new Clipboard('.btn', {
 });
 ```
 
+For use in bootstrap modals or with any other library that changes the focus you'll want to set the focused element as the `container` value.
+See [Issue #155 (comment)](https://github.com/zenorocha/clipboard.js/issues/155#issuecomment-273124130)
+
+```js
+new Clipboard('.btn', {
+    container: document.getElementById('#modal')
+});
+```
+
 Also, if you are working with single page apps, you may want to manage the lifecycle of the DOM more precisely. Here's how you clean up the events and objects that we create.
 
 ```js

src/clipboard-action.js

@@ -18,11 +18,12 @@ class ClipboardAction {
      * @param {Object} options
      */
     resolveOptions(options = {}) {
-        this.action  = options.action;
-        this.emitter = options.emitter;
-        this.target  = options.target;
-        this.text    = options.text;
-        this.trigger = options.trigger;
+        this.action    = options.action;
+        this.container = options.container;
+        this.emitter   = options.emitter;
+        this.target    = options.target;
+        this.text      = options.text;
+        this.trigger   = options.trigger;
 
         this.selectedText = '';
     }
@@ -50,7 +51,7 @@ class ClipboardAction {
         this.removeFake();
 
         this.fakeHandlerCallback = () => this.removeFake();
-        this.fakeHandler = document.body.addEventListener('click', this.fakeHandlerCallback) || true;
+        this.fakeHandler = this.container.addEventListener('click', this.fakeHandlerCallback) || true;
 
         this.fakeElem = document.createElement('textarea');
         // Prevent zooming on iOS
@@ -69,7 +70,7 @@ class ClipboardAction {
         this.fakeElem.setAttribute('readonly', '');
         this.fakeElem.value = this.text;
 
-        document.body.appendChild(this.fakeElem);
+        this.container.appendChild(this.fakeElem);
 
         this.selectedText = select(this.fakeElem);
         this.copyText();
@@ -81,13 +82,13 @@ class ClipboardAction {
      */
     removeFake() {
         if (this.fakeHandler) {
-            document.body.removeEventListener('click', this.fakeHandlerCallback);
+            this.container.removeEventListener('click', this.fakeHandlerCallback);
             this.fakeHandler = null;
             this.fakeHandlerCallback = null;
         }
 
         if (this.fakeElem) {
-            document.body.removeChild(this.fakeElem);
+            this.container.removeChild(this.fakeElem);
             this.fakeElem = null;
         }
     }

src/clipboard.js

@@ -24,9 +24,10 @@ class Clipboard extends Emitter {
      * @param {Object} options
      */
     resolveOptions(options = {}) {
-        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;
+        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;
+        this.container = (typeof options.container === 'object')   ? options.container : document.body;
     }
 
     /**
@@ -49,11 +50,12 @@ class Clipboard extends Emitter {
         }
 
         this.clipboardAction = new ClipboardAction({
-            action  : this.action(trigger),
-            target  : this.target(trigger),
-            text    : this.text(trigger),
-            trigger,
-            emitter : this
+            action    : this.action(trigger),
+            target    : this.target(trigger),
+            text      : this.text(trigger),
+            container : this.container,
+            trigger   : trigger,
+            emitter   : this
         });
     }
 

test/clipboard-action.js

@@ -22,10 +22,12 @@ describe('ClipboardAction', () => {
         it('should set base properties', () => {
             let clip = new ClipboardAction({
                 emitter: new Emitter(),
+                container: document.body,
                 text: 'foo'
             });
 
             assert.property(clip, 'action');
+            assert.property(clip, 'container');
             assert.property(clip, 'emitter');
             assert.property(clip, 'target');
             assert.property(clip, 'text');
@@ -41,6 +43,7 @@ describe('ClipboardAction', () => {
 
             let clip = new ClipboardAction({
                     emitter: new Emitter(),
+                    container: document.body,
                     text: 'foo'
                 });
 
@@ -82,6 +85,7 @@ describe('ClipboardAction', () => {
         it('should create a fake element and select its value', () => {
             let clip = new ClipboardAction({
                 emitter: new Emitter(),
+                container: document.body,
                 text: 'blah'
             });
 
@@ -93,6 +97,7 @@ describe('ClipboardAction', () => {
         it('should remove a temporary fake element', () => {
             let clip = new ClipboardAction({
                 emitter: new Emitter(),
+                container: document.body,
                 text: 'blah'
             });
 
@@ -106,6 +111,7 @@ describe('ClipboardAction', () => {
         it('should select text from editable element', () => {
             let clip = new ClipboardAction({
                 emitter: new Emitter(),
+                container: document.body,
                 target: document.querySelector('#input')
             });
 
@@ -115,6 +121,7 @@ describe('ClipboardAction', () => {
         it('should select text from non-editable element', () => {
             let clip = new ClipboardAction({
                 emitter: new Emitter(),
+                container: document.body,
                 target: document.querySelector('#paragraph')
             });
 
@@ -166,6 +173,7 @@ describe('ClipboardAction', () => {
         it('should fire a success event with certain properties', done => {
             let clip = new ClipboardAction({
                 emitter: new Emitter(),
+                container: document.body,
                 target: document.querySelector('#input')
             });
 
@@ -184,6 +192,7 @@ describe('ClipboardAction', () => {
         it('should fire a error event with certain properties', done => {
             let clip = new ClipboardAction({
                 emitter: new Emitter(),
+                container: document.body,
                 target: document.querySelector('#input')
             });
 
@@ -203,6 +212,7 @@ describe('ClipboardAction', () => {
         it('should remove focus from target and text selection', () => {
             let clip = new ClipboardAction({
                 emitter: new Emitter(),
+                container: document.body,
                 target: document.querySelector('#input')
             });
 
@@ -220,6 +230,7 @@ describe('ClipboardAction', () => {
         it('should destroy an existing fake element', () => {
             let clip = new ClipboardAction({
                 emitter: new Emitter(),
+                container: document.body,
                 text: 'blah'
             });
 

test/clipboard.js

@@ -52,6 +52,20 @@ describe('Clipboard', () => {
 
             assert.equal(global.fn, clipboard.text);
         });
+
+        it('should set container as an object', () => {
+            let clipboard = new Clipboard('.btn', {
+                container: document.body
+            });
+
+            assert.equal(document.body, clipboard.container);
+        });
+
+        it('should set container as body by default', () => {
+            let clipboard = new Clipboard('.btn');
+
+            assert.equal(document.body, clipboard.container);
+        });
     });
 
     describe('#listenClick', () => {