Source formatting and testing for #24

src/clipboard.js

@@ -34,7 +34,15 @@ class Clipboard extends Emitter {
      * @param {String} selector
      */
     delegateClick(selector) {
-        Delegate.bind(document.body, selector, 'click', (e) => this.onClick(e));
+        this.binding = Delegate.bind(document.body, selector, 'click', (e) => this.onClick(e));
+    }
+
+    /**
+     * Undelegates a click event on body.
+     * @param {String} selector
+     */
+    undelegateClick() {
+        Delegate.unbind(document.body, 'click', this.binding);
     }
 
     /**
@@ -82,6 +90,18 @@ class Clipboard extends Emitter {
     defaultText(trigger) {
         return getAttributeValue('text', trigger);
     }
+
+    /**
+     * Destroy lifecycle.
+     */
+    destroy() {
+        this.undelegateClick();
+
+        if (this.clipboardAction) {
+            this.clipboardAction.destroy();
+            this.clipboardAction = null;
+        }
+    }
 }
 
 

test/clipboard.js

@@ -69,6 +69,27 @@ describe('Clipboard', () => {
         });
     });
 
+    describe('#undelegateClick', function() {
+        before(() => {
+            global.spy = sinon.spy(Delegate, 'unbind');
+        });
+
+        after(() => {
+            global.spy.restore();
+        });
+
+        it('should undelegate a click event', () => {
+            let element = document.body;
+            let event = 'click';
+
+            let clipboard = new Clipboard('.btn');
+            clipboard.undelegateClick();
+
+            assert.ok(global.spy.calledOnce);
+            assert.ok(global.spy.calledWith(element, event));
+        });
+    });
+
     describe('#onClick', () => {
         it('should create a new instance of ClipboardAction', () => {
             let clipboard = new Clipboard('.btn');
@@ -92,4 +113,15 @@ describe('Clipboard', () => {
             }
         });
     });
+
+    describe('#destroy', () => {
+        it('should destroy an existing instance of ClipboardAction', () => {
+            let clipboard = new Clipboard('.btn');
+
+            clipboard.onClick(global.event);
+            clipboard.destroy();
+
+            assert.equal(clipboard.clipboardAction, null);
+        });
+    });
 });